ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor3352169476 <...> Warning: Permanently added '10.128.1.18' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor3352169476", ["ci2-upstream-fs/syz-executor3352169476"], 0x7ffc9a9f8b60 /* 10 vars */) = 0 brk(NULL) = 0x55555d1b4000 brk(0x55555d1b4d80) = 0x55555d1b4d80 arch_prctl(ARCH_SET_FS, 0x55555d1b4400) = 0 set_tid_address(0x55555d1b46d0) = 5630 set_robust_list(0x55555d1b46e0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-upstream-fs/syz-executor3352169476", 4096) = 44 getrandom("\xe1\x52\x7e\xed\x4d\x1e\xfe\x6b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555d1b4d80 brk(0x55555d1d5d80) = 0x55555d1d5d80 brk(0x55555d1d6000) = 0x55555d1d6000 mprotect(0x7fb96c867000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5631 attached [pid 5631] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5630] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5631 [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "10000000000", 11) = 11 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "20", 2) = 2 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "1", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "0", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "0", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "1", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "100", 3) = 3 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "0", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "0", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "7 4 1 3", 7) = 7 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "1", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "1", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "Y", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "0", 1) = 1 [pid 5630] close(3) = 0 [pid 5630] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5630] write(3, "5631", 4) = 4 [pid 5630] close(3) = 0 [pid 5630] kill(5631, SIGKILL) = 0 [pid 5631] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5631, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 sendto(4, [{nlmsg_len=36, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=864, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=5630}, {cmd=CTRL_CMD_NEWFAMILY, version=2}, [[{nla_len=13, nla_type=CTRL_ATTR_FAMILY_NAME}, "\x6e\x6c\x38\x30\x32\x31\x35\x34\x00"...], [{nla_len=6, nla_type=CTRL_ATTR_FAMILY_ID}, 0x1e], [{nla_len=8, nla_type=CTRL_ATTR_VERSION}, 1], [{nla_len=8, nla_type=CTRL_ATTR_HDRSIZE}, 0], [{nla_len=8, nla_type=CTRL_ATTR_MAXATTR}, 48], [{nla_len=744, nla_type=CTRL_ATTR_OPS}, [[{nla_len=20, nla_type=0x1}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, CTRL_CMD_NEWFAMILY], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_CMD_CAP_DO|GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x2}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, CTRL_CMD_DELOPS], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_CMD_CAP_DO|GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x3}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, CTRL_CMD_NEWMCAST_GRP], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x4}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, CTRL_CMD_DELMCAST_GRP], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x5}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, CTRL_CMD_GETMCAST_GRP], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x6}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0xd /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x7}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0xe /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x8}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0xc /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x9}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x14 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0xa}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, CTRL_CMD_GETPOLICY], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0xb}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0xb /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0xc}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x10 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0xd}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x11 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0xe}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0xf /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0xf}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x12 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x10}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x13 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x11}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x23 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x12}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x24 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x13}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x26 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x14}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x27 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x15}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x28 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x16}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x29 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x17}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x2a /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x18}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x2b /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x19}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x15 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x1a}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x16 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x1b}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x17 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x1c}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x18 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x1d}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x19 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x1e}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x1a /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x1f}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x1b /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x20}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x1c /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x21}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x1d /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x22}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x1e /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x23}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x1f /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DUMP|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x24}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x20 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]], [{nla_len=20, nla_type=0x25}, [[{nla_len=8, nla_type=CTRL_ATTR_OP_ID}, 0x21 /* CTRL_CMD_??? */], [{nla_len=8, nla_type=CTRL_ATTR_OP_FLAGS}, GENL_ADMIN_PERM|GENL_CMD_CAP_DO|GENL_CMD_CAP_HASPOL]]]]], [{nla_len=52, nla_type=CTRL_ATTR_MCAST_GROUPS}, [[{nla_len=24, nla_type=0x1}, [[{nla_len=8, nla_type=CTRL_ATTR_MCAST_GRP_ID}, 0xc], [{nla_len=11, nla_type=CTRL_ATTR_MCAST_GRP_NAME}, "\x63\x6f\x6e\x66\x69\x67\x00"...]]], [{nla_len=24, nla_type=0x2}, [[{nla_len=8, nla_type=CTRL_ATTR_MCAST_GRP_ID}, 0xd], [{nla_len=9, nla_type=CTRL_ATTR_MCAST_GRP_NAME}, "\x73\x63\x61\x6e\x00"...]]]]]]], 4096, 0, NULL, NULL) = 864 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5630}, {error=0, msg={nlmsg_len=36, nlmsg_type=nlctrl, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, {cmd=0xb, version=0}, [[{nla_len=8, nla_type=0x3}, "\x0b\x00\x00\x00"], [{nla_len=6, nla_type=0xa}, "\xa0\xaa"]]], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5630}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x00\x00\x00\x00\x0b\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x0c\x00\x01\x00\x02\x00\xaa\xaa\xaa\xaa\xaa\xaa"], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5630}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 sendto(3, [{nlmsg_len=84, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=0, ifi_flags=0, ifi_change=0}, [[{nla_len=11, nla_type=IFLA_IFNAME}, "lowpan0"...], [{nla_len=8, nla_type=IFLA_NUM_TX_QUEUES}, 2], [{nla_len=8, nla_type=IFLA_NUM_RX_QUEUES}, 2], [{nla_len=16, nla_type=IFLA_LINKINFO}, [{nla_len=10, nla_type=IFLA_INFO_KIND}, "lowpan"...]], [{nla_len=8, nla_type=IFLA_LINK}, 11]]], 84, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 84 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5630}, {error=0, msg={nlmsg_len=84, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, {cmd=0xb, version=0}, [[{nla_len=8, nla_type=0x3}, "\x0c\x00\x00\x00"], [{nla_len=6, nla_type=0xa}, "\xa1\xaa"]]], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5630}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=if_nametoindex("wpan1"), ifi_flags=IFF_UP, ifi_change=0x1}, [{nla_len=12, nla_type=IFLA_ADDRESS}, 02:01:aa:aa:aa:aa:aa]], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5630}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 close(3) = 0 close(4) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5634 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, ~[]ci2-upstream-fs/strace-static-x86_64: Process 5634 attached , [], 8) = 0 [pid 5634] set_robust_list(0x55555d1b46e0, 24 [pid 5630] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5636 attached [pid 5634] getrandom("\xc2\xd0\x1d\x1e\xc6\x29\x76\xc0", 8, GRND_NONBLOCK) = 8 [pid 5636] set_robust_list(0x55555d1b46e0, 24 [pid 5634] mkdir("./syzkaller.aXTG7e", 0700 [pid 5630] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5636 [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... set_robust_list resumed>) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] getrandom("\x1d\xfa\x94\xcb\x58\xfb\x51\xa0", 8, GRND_NONBLOCK) = 8 [pid 5636] mkdir("./syzkaller.TYHAWn", 0700ci2-upstream-fs/strace-static-x86_64: Process 5637 attached [pid 5634] <... mkdir resumed>) = 0 [pid 5637] set_robust_list(0x55555d1b46e0, 24 [pid 5634] chmod("./syzkaller.aXTG7e", 0777) = 0 [pid 5637] <... set_robust_list resumed>) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5630] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5637 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] chdir("./syzkaller.aXTG7e" [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] chmod("./syzkaller.TYHAWn", 0777 [pid 5634] <... chdir resumed>) = 0 [pid 5637] getrandom( [pid 5636] <... chmod resumed>) = 0 [pid 5634] mkdir("./0", 0777 [pid 5636] chdir("./syzkaller.TYHAWn" [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... getrandom resumed>"\xba\x86\x69\xc8\x0b\xcd\x0b\x89", 8, GRND_NONBLOCK) = 8 [pid 5634] <... mkdir resumed>) = 0 [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] mkdir("./syzkaller.OhKe9h", 0700 [pid 5636] <... chdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5630] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... mkdir resumed>) = 0 [pid 5636] mkdir("./0", 0777 [pid 5634] <... openat resumed>) = 3 [pid 5630] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] chmod("./syzkaller.OhKe9h", 0777 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5630] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... mkdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5636] close(3 [pid 5634] <... ioctl resumed>) = -1 ENXIO (No such device or address) ci2-upstream-fs/strace-static-x86_64: Process 5638 attached [pid 5630] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5638 [pid 5637] <... chmod resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5634] close(3 [pid 5638] set_robust_list(0x55555d1b46e0, 24 [pid 5637] chdir("./syzkaller.OhKe9h" [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... close resumed>) = 0 [pid 5637] <... chdir resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] <... set_robust_list resumed>) = 0 [pid 5637] mkdir("./0", 0777 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5630] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5630] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5639 attached [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5639 ci2-upstream-fs/strace-static-x86_64: Process 5641 attached ci2-upstream-fs/strace-static-x86_64: Process 5640 attached [pid 5638] getrandom( [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5639] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... getrandom resumed>"\x50\x70\x93\x5a\x9b\x00\xe3\x7d", 8, GRND_NONBLOCK) = 8 [pid 5637] <... openat resumed>) = 3 [pid 5630] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5640 [pid 5641] set_robust_list(0x55555d1b46e0, 24 [pid 5640] set_robust_list(0x55555d1b46e0, 24 [pid 5639] <... set_robust_list resumed>) = 0 [pid 5638] mkdir("./syzkaller.cl50OZ", 0700 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] <... set_robust_list resumed>) = 0 [pid 5640] <... set_robust_list resumed>) = 0 [pid 5639] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5641 [pid 5639] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5630] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] chdir("./0" [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5639] <... chdir resumed>) = 0 [pid 5637] close(3 [pid 5641] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] getrandom( [pid 5639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5639] setpgid(0, 0 [pid 5641] chdir("./0" [pid 5640] <... getrandom resumed>"\x17\x31\x3b\xa7\x5d\x93\x08\xc8", 8, GRND_NONBLOCK) = 8 [pid 5639] <... setpgid resumed>) = 0 [pid 5641] <... chdir resumed>) = 0 [pid 5639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5641] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] mkdir("./syzkaller.dkyPbk", 0700 [pid 5639] <... openat resumed>) = 3 [pid 5638] <... mkdir resumed>) = 0 [pid 5639] write(3, "1000", 4) = 4 [pid 5639] close(3 [pid 5637] <... close resumed>) = 0 [pid 5641] <... prctl resumed>) = 0 [pid 5639] <... close resumed>) = 0 [pid 5638] chmod("./syzkaller.cl50OZ", 0777 [pid 5641] setpgid(0, 0 [pid 5639] symlink("/dev/binderfs", "./binderfs" [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5641] <... setpgid resumed>) = 0 [pid 5638] <... chmod resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] chdir("./syzkaller.cl50OZ" [pid 5641] <... openat resumed>) = 3 [pid 5641] write(3, "1000", 4 [pid 5638] <... chdir resumed>) = 0 [pid 5641] <... write resumed>) = 4 [pid 5638] mkdir("./0", 0777ci2-upstream-fs/strace-static-x86_64: Process 5642 attached [pid 5641] close(3 [pid 5642] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5641] <... close resumed>) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5642 [pid 5641] symlink("/dev/binderfs", "./binderfs" [pid 5640] chmod("./syzkaller.dkyPbk", 0777 [pid 5642] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5642] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5642] chdir("./0") = 0 [pid 5642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5642] setpgid(0, 0) = 0 [pid 5642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5640] <... chmod resumed>) = 0 [pid 5642] write(3, "1000", 4) = 4 [pid 5640] chdir("./syzkaller.dkyPbk" [pid 5642] close(3) = 0 [pid 5642] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... chdir resumed>) = 0 [pid 5640] mkdir("./0", 0777 [pid 5642] <... symlink resumed>) = 0 [pid 5639] <... symlink resumed>) = 0 [pid 5641] <... symlink resumed>) = 0 [pid 5641] write(1, "executing program\n", 18) = 18 executing program [pid 5642] write(1, "executing program\n", 18 [pid 5641] memfd_create("syzkaller", 0 [pid 5640] <... mkdir resumed>) = 0 executing program executing program [pid 5639] write(1, "executing program\n", 18 [pid 5642] <... write resumed>) = 18 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5639] <... write resumed>) = 18 [pid 5640] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5641] <... memfd_create resumed>) = 3 [pid 5640] close(3 [pid 5641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... close resumed>) = 0 [pid 5641] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5642] memfd_create("syzkaller", 0 [pid 5639] memfd_create("syzkaller", 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5639] <... memfd_create resumed>) = 3 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5642] <... memfd_create resumed>) = 3 [pid 5642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... openat resumed>) = 3 ci2-upstream-fs/strace-static-x86_64: Process 5643 attached [pid 5642] <... mmap resumed>) = 0x7fb9643a6000 [pid 5639] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5643] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5643] <... set_robust_list resumed>) = 0 [pid 5638] close(3 [pid 5643] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5643 [pid 5643] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... close resumed>) = 0 [pid 5643] chdir("./0" [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] <... chdir resumed>) = 0 [pid 5643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5643] setpgid(0, 0) = 0 [pid 5643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5643] <... openat resumed>) = 3 [pid 5643] write(3, "1000", 4) = 4 [pid 5643] close(3) = 0 [pid 5643] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5643] <... symlink resumed>) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5643] write(1, "executing program\n", 18) = 18 executing program [pid 5643] memfd_create("syzkaller", 0) = 3 [pid 5643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0ci2-upstream-fs/strace-static-x86_64: Process 5644 attached ) = 0x7fb9643a6000 [pid 5644] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5644 [pid 5644] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5644] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] chdir("./0" [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] <... chdir resumed>) = 0 [pid 5644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5644] setpgid(0, 0) = 0 [pid 5644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5644] write(3, "1000", 4) = 4 [pid 5644] close(3) = 0 [pid 5644] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5644] write(1, "executing program\n", 18) = 18 executing program [pid 5644] memfd_create("syzkaller", 0) = 3 [pid 5644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5641] <... write resumed>) = 16777216 [pid 5641] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5641] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5641] close(3) = 0 [pid 5641] close(4) = 0 [ 198.624230][ T5641] loop0: detected capacity change from 0 to 32768 [pid 5641] mkdir("./bus", 0777) = 0 [pid 5641] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5639] <... write resumed>) = 16777216 [pid 5639] munmap(0x7fb9643a6000, 138412032 [pid 5643] <... write resumed>) = 16777216 [pid 5643] munmap(0x7fb9643a6000, 138412032 [pid 5639] <... munmap resumed>) = 0 [pid 5643] <... munmap resumed>) = 0 [pid 5639] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5639] ioctl(4, LOOP_SET_FD, 3 [pid 5643] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5639] <... ioctl resumed>) = 0 [pid 5643] <... openat resumed>) = 4 [pid 5643] ioctl(4, LOOP_SET_FD, 3 [pid 5639] close(3) = 0 [pid 5643] <... ioctl resumed>) = 0 [pid 5639] close(4) = 0 [pid 5639] mkdir("./bus", 0777 [pid 5642] <... write resumed>) = 16777216 [pid 5639] <... mkdir resumed>) = 0 [pid 5643] close(3) = 0 [pid 5642] munmap(0x7fb9643a6000, 138412032 [pid 5639] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5643] close(4) = 0 [pid 5643] mkdir("./bus", 0777) = 0 [pid 5642] <... munmap resumed>) = 0 [ 198.809282][ T5639] loop1: detected capacity change from 0 to 32768 [ 198.836470][ T5643] loop4: detected capacity change from 0 to 32768 [pid 5643] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5642] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5642] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5642] close(3) = 0 [pid 5642] close(4) = 0 [pid 5642] mkdir("./bus", 0777) = 0 [ 198.899909][ T5642] loop2: detected capacity change from 0 to 32768 [pid 5642] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5641] <... mount resumed>) = 0 [pid 5641] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5641] chdir("./bus" [pid 5639] <... mount resumed>) = 0 [pid 5641] <... chdir resumed>) = 0 [pid 5639] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5639] <... openat resumed>) = 3 [pid 5639] chdir("./bus" [pid 5641] exit_group(0 [pid 5639] <... chdir resumed>) = 0 [pid 5641] <... exit_group resumed>) = ? [pid 5639] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5641] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5641, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=37 /* 0.37 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5644] <... write resumed>) = 16777216 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5634] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5644] munmap(0x7fb9643a6000, 138412032 [pid 5639] exit_group(0) = ? [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3 [pid 5639] +++ exited with 0 +++ [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5639, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=37 /* 0.37 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... restart_syscall resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./0/binderfs" [pid 5636] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5643] <... mount resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5643] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5644] <... munmap resumed>) = 0 [pid 5634] unlink("./0/binderfs" [pid 5643] chdir("./bus" [pid 5636] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5644] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5643] <... chdir resumed>) = 0 [pid 5643] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5644] <... openat resumed>) = 4 [pid 5643] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5636] <... openat resumed>) = 3 [pid 5644] ioctl(4, LOOP_SET_FD, 3 [pid 5643] exit_group(0 [pid 5636] fstat(3 [pid 5643] <... exit_group resumed>) = ? [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5644] <... ioctl resumed>) = 0 [pid 5636] getdents64(3 [pid 5642] <... mount resumed>) = 0 [pid 5642] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5644] close(3 [pid 5642] chdir("./bus" [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5644] <... close resumed>) = 0 [pid 5644] close(4 [pid 5643] +++ exited with 0 +++ [pid 5642] <... chdir resumed>) = 0 [pid 5636] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5643, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=35 /* 0.35 s */} --- [pid 5642] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... unlink resumed>) = 0 [pid 5644] <... close resumed>) = 0 [pid 5642] exit_group(0 [pid 5640] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5642] <... exit_group resumed>) = ? [pid 5640] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5644] mkdir("./bus", 0777 [pid 5640] <... openat resumed>) = 3 [pid 5636] newfstatat(AT_FDCWD, "./0/binderfs" [pid 5640] fstat(3 [pid 5634] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5644] <... mkdir resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 199.085531][ T5644] loop3: detected capacity change from 0 to 32768 [pid 5636] unlink("./0/binderfs" [pid 5644] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5642] +++ exited with 0 +++ [pid 5640] getdents64(3 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5642, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5636] <... unlink resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./0/binderfs" [pid 5637] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] unlink("./0/binderfs" [pid 5637] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... unlink resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5640] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./0/binderfs") = 0 [pid 5637] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5644] <... mount resumed>) = 0 [pid 5644] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5644] chdir("./bus") = 0 [pid 5644] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5644] exit_group(0) = ? [pid 5644] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5644, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=32 /* 0.32 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./0/binderfs") = 0 [pid 5638] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5637] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5638] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./0/bus" [pid 5634] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] newfstatat(AT_FDCWD, "./0/bus" [pid 5638] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... openat resumed>) = 4 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] newfstatat(AT_FDCWD, "./0/bus" [pid 5640] <... umount2 resumed>) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] fstat(4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./0/bus" [pid 5638] getdents64(4 [pid 5637] getdents64(4 [pid 5636] <... openat resumed>) = 4 [pid 5634] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... openat resumed>) = 4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] getdents64(4 [pid 5637] getdents64(4 [pid 5636] fstat(4 [pid 5634] fstat(4 [pid 5640] <... openat resumed>) = 4 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] fstat(4 [pid 5638] close(4 [pid 5637] close(4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... close resumed>) = 0 [pid 5636] getdents64(4 [pid 5634] getdents64(4 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] rmdir("./0/bus" [pid 5637] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] rmdir("./0/bus" [pid 5636] getdents64(4 [pid 5634] getdents64(4 [pid 5640] close(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... close resumed>) = 0 [pid 5636] close(4 [pid 5634] close(4 [pid 5640] rmdir("./0/bus" [pid 5634] <... close resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./0/bus" [pid 5634] rmdir("./0/bus" [pid 5638] <... rmdir resumed>) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5637] getdents64(3 [pid 5636] getdents64(3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3 [pid 5636] close(3 [pid 5634] getdents64(3 [pid 5640] getdents64(3 [pid 5638] getdents64(3 [pid 5637] <... close resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] rmdir("./0" [pid 5636] rmdir("./0" [pid 5634] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5638] close(3 [pid 5640] close(3 [pid 5638] <... close resumed>) = 0 [pid 5634] rmdir("./0" [pid 5640] <... close resumed>) = 0 [pid 5638] rmdir("./0" [pid 5637] mkdir("./1", 0777 [pid 5636] mkdir("./1", 0777 [pid 5640] rmdir("./0" [pid 5638] <... rmdir resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5638] mkdir("./1", 0777 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] mkdir("./1", 0777 [pid 5638] <... mkdir resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5636] <... openat resumed>) = 3 [pid 5634] <... mkdir resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5640] mkdir("./1", 0777 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... ioctl resumed>) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] <... openat resumed>) = 3 [pid 5637] close(3 [pid 5636] <... ioctl resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5637] <... close resumed>) = 0 [pid 5636] close(3 [pid 5634] <... openat resumed>) = 3 [pid 5638] <... ioctl resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] close(3 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5638] <... close resumed>) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] <... ioctl resumed>) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] close(3ci2-upstream-fs/strace-static-x86_64: Process 5647 attached [pid 5640] <... openat resumed>) = 3 ci2-upstream-fs/strace-static-x86_64: Process 5648 attached [pid 5647] set_robust_list(0x55555d1b46e0, 24 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5647] <... set_robust_list resumed>) = 0 [pid 5648] set_robust_list(0x55555d1b46e0, 24 [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... ioctl resumed>) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5648 [pid 5648] <... set_robust_list resumed>) = 0 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] close(3 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5648] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] chdir("./1" [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5647 [pid 5647] <... chdir resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5648] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5648] chdir("./1" [pid 5647] setpgid(0, 0 [pid 5648] <... chdir resumed>) = 0 [pid 5647] <... setpgid resumed>) = 0 [pid 5648] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5648] <... prctl resumed>) = 0 [pid 5647] <... openat resumed>) = 3 [pid 5648] setpgid(0, 0 [pid 5647] write(3, "1000", 4 [pid 5648] <... setpgid resumed>) = 0 [pid 5647] <... write resumed>) = 4 [pid 5647] close(3) = 0 [pid 5648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5647] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5647] write(1, "executing program\n", 18) = 18 executing program [pid 5648] <... openat resumed>) = 3 [pid 5647] memfd_create("syzkaller", 0) = 3 [pid 5647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5648] write(3, "1000", 4) = 4 [pid 5648] close(3) = 0 [pid 5648] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5648] write(1, "executing program\n", 18) = 18 [pid 5648] memfd_create("syzkaller", 0) = 3 [pid 5648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... close resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5649 attached [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5649] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5649 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5649] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] chdir("./1") = 0 [pid 5649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5649] setpgid(0, 0) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5650 attached [pid 5649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5636] <... close resumed>) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5650 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5650] set_robust_list(0x55555d1b46e0, 24 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5650] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5650] chdir("./1") = 0 [pid 5650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5650] setpgid(0, 0 [pid 5649] <... openat resumed>) = 3 [pid 5650] <... setpgid resumed>) = 0 [pid 5649] write(3, "1000", 4ci2-upstream-fs/strace-static-x86_64: Process 5651 attached ) = 4 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5651 [pid 5651] set_robust_list(0x55555d1b46e0, 24 [pid 5650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5651] <... set_robust_list resumed>) = 0 [pid 5649] close(3 [pid 5651] rt_sigprocmask(SIG_SETMASK, [] [pid 5650] <... openat resumed>) = 3 [pid 5649] <... close resumed>) = 0 [pid 5651] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] symlink("/dev/binderfs", "./binderfs" [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] write(3, "1000", 4 [pid 5651] chdir("./1" [pid 5649] <... symlink resumed>) = 0 [pid 5651] <... chdir resumed>) = 0 [pid 5651] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5650] <... write resumed>) = 4 [pid 5651] <... prctl resumed>) = 0 [pid 5650] close(3 [pid 5649] write(1, "executing program\n", 18 [pid 5651] setpgid(0, 0 [pid 5650] <... close resumed>) = 0 executing program [pid 5649] <... write resumed>) = 18 [pid 5651] <... setpgid resumed>) = 0 [pid 5651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5650] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5649] memfd_create("syzkaller", 0 [pid 5651] <... openat resumed>) = 3 [pid 5650] write(1, "executing program\n", 18 [pid 5649] <... memfd_create resumed>) = 3 [pid 5651] write(3, "1000", 4 [pid 5649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5651] <... write resumed>) = 4 [pid 5650] <... write resumed>) = 18 [pid 5649] <... mmap resumed>) = 0x7fb9643a6000 [pid 5651] close(3 executing program [pid 5650] memfd_create("syzkaller", 0 [pid 5651] <... close resumed>) = 0 [pid 5650] <... memfd_create resumed>) = 3 [pid 5650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5651] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5651] write(1, "executing program\n", 18) = 18 executing program [pid 5651] memfd_create("syzkaller", 0) = 3 [pid 5651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5647] <... write resumed>) = 16777216 [pid 5647] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5647] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5647] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5647] close(3) = 0 [pid 5647] close(4) = 0 [pid 5647] mkdir("./bus", 0777) = 0 [ 200.985288][ T5647] loop2: detected capacity change from 0 to 32768 [pid 5647] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5648] <... write resumed>) = 16777216 [pid 5648] munmap(0x7fb9643a6000, 138412032 [pid 5647] <... mount resumed>) = 0 [pid 5648] <... munmap resumed>) = 0 [pid 5648] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5648] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5647] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5648] close(3 [pid 5647] chdir("./bus" [pid 5648] <... close resumed>) = 0 [pid 5647] <... chdir resumed>) = 0 [pid 5648] close(4) = 0 [pid 5648] mkdir("./bus", 0777 [pid 5647] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5648] <... mkdir resumed>) = 0 [pid 5648] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5647] exit_group(0) = ? [pid 5647] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5647, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 201.106860][ T5648] loop3: detected capacity change from 0 to 32768 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./1/binderfs") = 0 [pid 5637] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5648] <... mount resumed>) = 0 [pid 5648] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5648] chdir("./bus") = 0 [pid 5648] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5648] exit_group(0) = ? [pid 5648] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5648, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 s */} --- [pid 5637] <... umount2 resumed>) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... restart_syscall resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./1/bus" [pid 5638] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... openat resumed>) = 3 [pid 5637] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] fstat(3 [pid 5637] <... openat resumed>) = 4 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3 [pid 5637] fstat(4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4 [pid 5638] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./1/binderfs" [pid 5637] getdents64(4 [pid 5638] <... unlink resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./1/bus" [pid 5638] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... rmdir resumed>) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./1") = 0 [pid 5637] mkdir("./2", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5652 attached [pid 5652] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5652 [pid 5652] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... umount2 resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5652] chdir("./2" [pid 5638] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5652] <... chdir resumed>) = 0 [pid 5652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5652] <... prctl resumed>) = 0 [pid 5652] setpgid(0, 0) = 0 [pid 5652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5652] <... openat resumed>) = 3 [pid 5638] rmdir("./1/bus" [pid 5652] write(3, "1000", 4) = 4 [pid 5652] close(3 [pid 5638] <... rmdir resumed>) = 0 [pid 5652] <... close resumed>) = 0 [pid 5652] symlink("/dev/binderfs", "./binderfs" [pid 5638] getdents64(3 [pid 5652] <... symlink resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5652] write(1, "executing program\n", 18 [pid 5638] <... close resumed>) = 0 executing program [pid 5652] <... write resumed>) = 18 [pid 5638] rmdir("./1" [pid 5652] memfd_create("syzkaller", 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5652] <... memfd_create resumed>) = 3 [pid 5652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5638] mkdir("./2", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5653 attached [pid 5653] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5653 [pid 5653] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5653] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5653] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5653] chdir("./2") = 0 [pid 5653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5653] setpgid(0, 0) = 0 [pid 5651] <... write resumed>) = 16777216 [pid 5653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5651] munmap(0x7fb9643a6000, 138412032 [pid 5653] <... openat resumed>) = 3 [pid 5653] write(3, "1000", 4) = 4 [pid 5653] close(3) = 0 [pid 5653] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5653] write(1, "executing program\n", 18) = 18 executing program [pid 5653] memfd_create("syzkaller", 0 [pid 5651] <... munmap resumed>) = 0 [pid 5651] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5653] <... memfd_create resumed>) = 3 [pid 5653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5651] ioctl(4, LOOP_SET_FD, 3 [pid 5653] <... mmap resumed>) = 0x7fb9643a6000 [pid 5651] <... ioctl resumed>) = 0 [pid 5651] close(3) = 0 [pid 5651] close(4) = 0 [pid 5651] mkdir("./bus", 0777) = 0 [ 201.617594][ T5651] loop1: detected capacity change from 0 to 32768 [pid 5651] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5650] <... write resumed>) = 16777216 [pid 5650] munmap(0x7fb9643a6000, 138412032 [pid 5651] <... mount resumed>) = 0 [pid 5650] <... munmap resumed>) = 0 [pid 5651] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5651] chdir("./bus" [pid 5650] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5651] <... chdir resumed>) = 0 [pid 5650] <... openat resumed>) = 4 [pid 5650] ioctl(4, LOOP_SET_FD, 3 [pid 5651] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5651] exit_group(0) = ? [pid 5650] <... ioctl resumed>) = 0 [pid 5650] close(3) = 0 [pid 5651] +++ exited with 0 +++ [pid 5650] close(4 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5651, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=35 /* 0.35 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5650] <... close resumed>) = 0 [pid 5650] mkdir("./bus", 0777 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5636] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [ 201.769220][ T5650] loop0: detected capacity change from 0 to 32768 [pid 5636] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./1/binderfs") = 0 [pid 5636] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5650] <... mkdir resumed>) = 0 [pid 5650] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5649] <... write resumed>) = 16777216 [pid 5649] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5649] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5649] close(3) = 0 [pid 5649] close(4) = 0 [pid 5649] mkdir("./bus", 0777) = 0 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./1/bus" [pid 5649] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 201.894676][ T5649] loop4: detected capacity change from 0 to 32768 [pid 5636] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5650] <... mount resumed>) = 0 [pid 5636] getdents64(4 [pid 5650] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5650] <... openat resumed>) = 3 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5650] chdir("./bus" [pid 5636] close(4 [pid 5650] <... chdir resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5650] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] rmdir("./1/bus" [pid 5650] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5636] <... rmdir resumed>) = 0 [pid 5650] exit_group(0) = ? [pid 5649] <... mount resumed>) = 0 [pid 5649] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] getdents64(3 [pid 5649] <... openat resumed>) = 3 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5649] chdir("./bus" [pid 5636] close(3 [pid 5649] <... chdir resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5649] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] rmdir("./1" [pid 5649] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5650] +++ exited with 0 +++ [pid 5649] exit_group(0) = ? [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5650, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5634] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5649] +++ exited with 0 +++ [pid 5634] fstat(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5649, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] getdents64(3 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5636] mkdir("./2", 0777) = 0 [pid 5640] umount2("./1", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] <... openat resumed>) = 3 [pid 5634] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] fstat(3 [pid 5636] <... openat resumed>) = 3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] newfstatat(AT_FDCWD, "./1/binderfs" [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3 [pid 5640] umount2("./1/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... close resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./1/binderfs" [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] unlink("./1/binderfs" [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./1/binderfs" [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5654 ci2-upstream-fs/strace-static-x86_64: Process 5654 attached [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5654] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5654] <... set_robust_list resumed>) = 0 [pid 5654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5654] chdir("./2") = 0 [pid 5654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5654] setpgid(0, 0) = 0 [pid 5654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5654] write(3, "1000", 4) = 4 [pid 5654] close(3) = 0 [pid 5654] symlink("/dev/binderfs", "./binderfs" [pid 5653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5654] <... symlink resumed>) = 0 [pid 5654] write(1, "executing program\n", 18 [pid 5634] <... unlink resumed>) = 0 [pid 5654] <... write resumed>) = 18 executing program [pid 5654] memfd_create("syzkaller", 0 [pid 5640] <... unlink resumed>) = 0 [pid 5634] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5654] <... memfd_create resumed>) = 3 [pid 5654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5640] fstat(4 [pid 5634] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(4 [pid 5634] newfstatat(AT_FDCWD, "./1/bus" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] getdents64(4 [pid 5634] umount2("./1/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./1/bus" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./1/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4 [pid 5640] getdents64(3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5640] close(3) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] rmdir("./1") = 0 [pid 5634] rmdir("./1/bus" [pid 5640] mkdir("./2", 0777 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./1" [pid 5640] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] mkdir("./2", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3 [pid 5654] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5652] <... write resumed>) = 16777216 [pid 5652] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5652] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5652] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5652] close(3) = 0 [pid 5652] close(4) = 0 [pid 5652] mkdir("./bus", 0777) = 0 [pid 5652] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5652] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5652] chdir("./bus") = 0 [pid 5652] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5652] exit_group(0) = ? [pid 5652] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5652, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=28 /* 0.28 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./2/binderfs") = 0 [pid 5637] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5655 attached [pid 5634] <... close resumed>) = 0 [pid 5655] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5655 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5655] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5655] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5655] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5655] chdir("./2") = 0 [pid 5655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5655] setpgid(0, 0) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5656 ci2-upstream-fs/strace-static-x86_64: Process 5656 attached [pid 5655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5656] set_robust_list(0x55555d1b46e0, 24 [pid 5655] <... openat resumed>) = 3 [pid 5655] write(3, "1000", 4) = 4 [pid 5655] close(3 [pid 5656] <... set_robust_list resumed>) = 0 [pid 5655] <... close resumed>) = 0 [pid 5656] rt_sigprocmask(SIG_SETMASK, [] [pid 5655] symlink("/dev/binderfs", "./binderfs" [pid 5656] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5656] chdir("./2") = 0 [pid 5656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5656] setpgid(0, 0) = 0 [pid 5655] <... symlink resumed>) = 0 [pid 5653] <... write resumed>) = 16777216 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5655] write(1, "executing program\n", 18 executing program [pid 5653] munmap(0x7fb9643a6000, 138412032 [pid 5656] write(3, "1000", 4 [pid 5655] <... write resumed>) = 18 [pid 5656] <... write resumed>) = 4 [pid 5656] close(3) = 0 [pid 5655] memfd_create("syzkaller", 0 [pid 5656] symlink("/dev/binderfs", "./binderfs" [pid 5655] <... memfd_create resumed>) = 3 [pid 5655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5656] <... symlink resumed>) = 0 [pid 5656] write(1, "executing program\n", 18) = 18 executing program [pid 5656] memfd_create("syzkaller", 0) = 3 [pid 5656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5653] <... munmap resumed>) = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5653] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5653] <... ioctl resumed>) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5653] close(3) = 0 [pid 5653] close(4) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5653] mkdir("./bus", 0777) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5653] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./2/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./2") = 0 [pid 5637] mkdir("./3", 0777 [pid 5653] <... mount resumed>) = 0 [pid 5653] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5653] chdir("./bus") = 0 [pid 5653] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5653] exit_group(0 [pid 5637] <... mkdir resumed>) = 0 [pid 5653] <... exit_group resumed>) = ? [pid 5653] +++ exited with 0 +++ [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5653, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=30 /* 0.30 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5638] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] close(3 [pid 5638] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./2/binderfs") = 0 [pid 5638] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./2/bus") = 0 [pid 5656] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./2") = 0 [pid 5638] mkdir("./3", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216ci2-upstream-fs/strace-static-x86_64: Process 5657 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5657 [pid 5657] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5657] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5657] chdir("./3") = 0 [pid 5657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5657] setpgid(0, 0) = 0 [pid 5657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5657] write(3, "1000", 4) = 4 [pid 5657] close(3) = 0 [pid 5657] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5657] write(1, "executing program\n", 18) = 18 [pid 5657] memfd_create("syzkaller", 0) = 3 [pid 5657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5654] <... write resumed>) = 16777216 [pid 5654] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5654] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5654] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5654] close(3) = 0 [pid 5654] close(4 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5654] <... close resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5654] mkdir("./bus", 0777) = 0 [pid 5654] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, ""ci2-upstream-fs/strace-static-x86_64: Process 5658 attached [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5658 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5658] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5658] <... set_robust_list resumed>) = 0 [pid 5658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5658] chdir("./3") = 0 [pid 5658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5658] setpgid(0, 0) = 0 [ 203.744434][ T5654] set_capacity_and_notify: 2 callbacks suppressed [ 203.744457][ T5654] loop1: detected capacity change from 0 to 32768 [pid 5658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1000", 4) = 4 [pid 5658] close(3) = 0 [pid 5658] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5654] <... mount resumed>) = 0 [pid 5658] write(1, "executing program\n", 18) = 18 [pid 5654] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5654] chdir("./bus") = 0 [pid 5654] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5658] memfd_create("syzkaller", 0 [pid 5654] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5654] exit_group(0 [pid 5658] <... memfd_create resumed>) = 3 [pid 5658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5654] <... exit_group resumed>) = ? executing program [pid 5658] <... mmap resumed>) = 0x7fb9643a6000 [pid 5654] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5654, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./2/binderfs") = 0 [pid 5636] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./2/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./2") = 0 [pid 5636] mkdir("./3", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5659 ci2-upstream-fs/strace-static-x86_64: Process 5659 attached [pid 5659] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5659] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5659] chdir("./3") = 0 [pid 5659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5659] setpgid(0, 0) = 0 [pid 5659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5659] write(3, "1000", 4) = 4 [pid 5659] close(3) = 0 [pid 5659] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5659] write(1, "executing program\n", 18) = 18 [pid 5659] memfd_create("syzkaller", 0) = 3 [pid 5659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5655] <... write resumed>) = 16777216 [pid 5655] munmap(0x7fb9643a6000, 138412032 [pid 5656] <... write resumed>) = 16777216 [pid 5656] munmap(0x7fb9643a6000, 138412032 [pid 5655] <... munmap resumed>) = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5655] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5655] close(3) = 0 [pid 5655] close(4 [pid 5656] <... munmap resumed>) = 0 [pid 5655] <... close resumed>) = 0 [pid 5655] mkdir("./bus", 0777 [pid 5659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5656] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5655] <... mkdir resumed>) = 0 [pid 5656] <... openat resumed>) = 4 [pid 5656] ioctl(4, LOOP_SET_FD, 3 [ 204.506115][ T5655] loop4: detected capacity change from 0 to 32768 [pid 5655] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5656] <... ioctl resumed>) = 0 [pid 5656] close(3) = 0 [pid 5656] close(4) = 0 [pid 5656] mkdir("./bus", 0777) = 0 [pid 5656] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5655] <... mount resumed>) = 0 [ 204.542343][ T5656] loop0: detected capacity change from 0 to 32768 [pid 5655] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5655] chdir("./bus") = 0 [pid 5655] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5655] exit_group(0) = ? [pid 5655] +++ exited with 0 +++ [pid 5656] <... mount resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5655, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=18 /* 0.18 s */} --- [pid 5656] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5656] chdir("./bus") = 0 [pid 5656] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5656] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5656] exit_group(0 [pid 5640] <... openat resumed>) = 3 [pid 5640] fstat(3 [pid 5656] <... exit_group resumed>) = ? [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5656] +++ exited with 0 +++ [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5656, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=30 /* 0.30 s */} --- [pid 5640] unlink("./2/binderfs") = 0 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5657] <... write resumed>) = 16777216 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5657] munmap(0x7fb9643a6000, 138412032 [pid 5640] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./2/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./2/binderfs" [pid 5657] <... munmap resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] unlink("./2/binderfs" [pid 5657] <... openat resumed>) = 4 [pid 5657] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... unlink resumed>) = 0 [pid 5657] <... ioctl resumed>) = 0 [pid 5634] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5657] close(3) = 0 [pid 5657] close(4 [pid 5658] <... write resumed>) = 16777216 [pid 5658] munmap(0x7fb9643a6000, 138412032 [pid 5657] <... close resumed>) = 0 [pid 5657] mkdir("./bus", 0777) = 0 [ 204.737804][ T5657] loop3: detected capacity change from 0 to 32768 [pid 5657] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] <... umount2 resumed>) = 0 [pid 5658] <... munmap resumed>) = 0 [pid 5640] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5658] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5640] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5658] <... openat resumed>) = 4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5658] ioctl(4, LOOP_SET_FD, 3 [pid 5640] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5658] <... ioctl resumed>) = 0 [pid 5658] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4 [pid 5658] <... close resumed>) = 0 [pid 5658] close(4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5658] <... close resumed>) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./2/bus" [pid 5658] mkdir("./bus", 0777 [pid 5640] <... rmdir resumed>) = 0 [pid 5658] <... mkdir resumed>) = 0 [pid 5658] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5634] <... umount2 resumed>) = 0 [ 204.843909][ T5658] loop2: detected capacity change from 0 to 32768 [pid 5640] rmdir("./2" [pid 5634] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5657] <... mount resumed>) = 0 [pid 5634] umount2("./2/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5657] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] openat(AT_FDCWD, "./2/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5657] <... openat resumed>) = 3 [pid 5640] mkdir("./3", 0777 [pid 5657] chdir("./bus" [pid 5640] <... mkdir resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5657] <... chdir resumed>) = 0 [pid 5657] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] fstat(4 [pid 5657] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5658] <... mount resumed>) = 0 [pid 5657] exit_group(0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5658] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5657] <... exit_group resumed>) = ? [pid 5640] <... openat resumed>) = 3 [pid 5634] getdents64(4 [pid 5658] <... openat resumed>) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5658] chdir("./bus" [pid 5640] <... ioctl resumed>) = 0 [pid 5658] <... chdir resumed>) = 0 [pid 5640] close(3 [pid 5634] getdents64(4 [pid 5658] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5640] <... close resumed>) = 0 [pid 5658] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5657] +++ exited with 0 +++ [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5658] exit_group(0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5657, si_uid=0, si_status=0, si_utime=0, si_stime=38 /* 0.38 s */} --- [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5658] <... exit_group resumed>) = ? [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] close(4) = 0 [pid 5634] rmdir("./2/bus" [pid 5638] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5658] +++ exited with 0 +++ [pid 5634] <... rmdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] getdents64(3 [pid 5638] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5658, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=26 /* 0.26 s */} --- ci2-upstream-fs/strace-static-x86_64: Process 5660 attached [pid 5638] <... openat resumed>) = 3 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5660] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5660 [pid 5638] fstat(3 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] close(3 [pid 5660] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5660] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... close resumed>) = 0 [pid 5660] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rmdir("./2" [pid 5660] chdir("./3" [pid 5638] getdents64(3 [pid 5634] <... rmdir resumed>) = 0 [pid 5660] <... chdir resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5660] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] mkdir("./3", 0777 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5660] <... prctl resumed>) = 0 [pid 5638] unlink("./3/binderfs" [pid 5634] <... mkdir resumed>) = 0 [pid 5637] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5660] setpgid(0, 0) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] fstat(3 [pid 5638] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... openat resumed>) = 3 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5660] <... openat resumed>) = 3 [pid 5637] getdents64(3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5660] write(3, "1000", 4) = 4 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] <... ioctl resumed>) = 0 [pid 5637] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] close(3 [pid 5660] close(3 [pid 5634] <... close resumed>) = 0 [pid 5660] <... close resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5660] symlink("/dev/binderfs", "./binderfs" [pid 5637] newfstatat(AT_FDCWD, "./3/binderfs" [pid 5660] <... symlink resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] unlink("./3/binderfs" [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] <... unlink resumed>) = 0 [pid 5660] write(1, "executing program\n", 18 [pid 5637] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5660] <... write resumed>) = 18 executing program [pid 5660] memfd_create("syzkaller", 0ci2-upstream-fs/strace-static-x86_64: Process 5661 attached ) = 3 [pid 5660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5661] set_robust_list(0x55555d1b46e0, 24 [pid 5660] <... mmap resumed>) = 0x7fb9643a6000 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5661 [pid 5661] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5661] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5661] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5661] chdir("./3") = 0 [pid 5661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5661] setpgid(0, 0) = 0 [pid 5661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5661] <... openat resumed>) = 3 [pid 5638] newfstatat(AT_FDCWD, "./3/bus" [pid 5661] write(3, "1000", 4 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5661] <... write resumed>) = 4 [pid 5661] close(3) = 0 [pid 5638] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5661] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5661] <... symlink resumed>) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] fstat(4 [pid 5637] newfstatat(AT_FDCWD, "./3/bus" [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5661] write(1, "executing program\n", 18 [pid 5638] getdents64(4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5661] <... write resumed>) = 18 [pid 5638] close(4 [pid 5637] <... openat resumed>) = 4 [pid 5661] memfd_create("syzkaller", 0 [pid 5638] <... close resumed>) = 0 [pid 5637] fstat(4 [pid 5661] <... memfd_create resumed>) = 3 [pid 5638] rmdir("./3/bus" [pid 5661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5661] <... mmap resumed>) = 0x7fb9643a6000 executing program [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./3/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./3" [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5637] <... rmdir resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./3") = 0 [pid 5637] mkdir("./4", 0777) = 0 [pid 5638] mkdir("./4", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... openat resumed>) = 3 [pid 5638] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5637] <... ioctl resumed>) = 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5637] close(3 [pid 5638] close(3 [pid 5637] <... close resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5663 attached ci2-upstream-fs/strace-static-x86_64: Process 5662 attached [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5662 [pid 5663] set_robust_list(0x55555d1b46e0, 24 [pid 5662] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5663 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5663] <... set_robust_list resumed>) = 0 [pid 5663] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5662] <... set_robust_list resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5662] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5662] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5662] chdir("./4") = 0 [pid 5662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5663] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5662] setpgid(0, 0) = 0 [pid 5662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5662] write(3, "1000", 4) = 4 [pid 5662] close(3 [pid 5663] chdir("./4") = 0 [pid 5662] <... close resumed>) = 0 [pid 5663] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5662] symlink("/dev/binderfs", "./binderfs" [pid 5663] <... prctl resumed>) = 0 [pid 5662] <... symlink resumed>) = 0 [pid 5663] setpgid(0, 0) = 0 [pid 5662] write(1, "executing program\n", 18 [pid 5663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5662] <... write resumed>) = 18 [pid 5663] <... openat resumed>) = 3 [pid 5662] memfd_create("syzkaller", 0 executing program [pid 5663] write(3, "1000", 4) = 4 [pid 5662] <... memfd_create resumed>) = 3 [pid 5662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5663] close(3 [pid 5662] <... mmap resumed>) = 0x7fb9643a6000 [pid 5663] <... close resumed>) = 0 [pid 5663] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5663] write(1, "executing program\n", 18) = 18 [pid 5663] memfd_create("syzkaller", 0) = 3 [pid 5663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5659] <... write resumed>) = 16777216 [pid 5659] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5659] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5659] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5659] close(3) = 0 [pid 5659] close(4) = 0 [pid 5659] mkdir("./bus", 0777) = 0 [ 205.480829][ T5659] loop1: detected capacity change from 0 to 32768 [pid 5659] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5659] <... mount resumed>) = 0 [pid 5659] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5659] chdir("./bus") = 0 [pid 5659] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5659] exit_group(0) = ? [pid 5659] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5659, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=31 /* 0.31 s */} --- [pid 5636] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./3/binderfs") = 0 [pid 5636] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5662] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./3/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./3/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./3" [pid 5663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... rmdir resumed>) = 0 [pid 5636] mkdir("./4", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5664 attached , child_tidptr=0x55555d1b46d0) = 5664 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5664] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5664] <... set_robust_list resumed>) = 0 [pid 5664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5664] chdir("./4") = 0 [pid 5664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5664] setpgid(0, 0) = 0 [pid 5664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5664] write(3, "1000", 4) = 4 [pid 5664] close(3) = 0 [pid 5664] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5664] write(1, "executing program\n", 18) = 18 executing program [pid 5664] memfd_create("syzkaller", 0) = 3 [pid 5664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5660] <... write resumed>) = 16777216 [pid 5660] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5660] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5660] ioctl(4, LOOP_SET_FD, 3 [pid 5661] <... write resumed>) = 16777216 [pid 5661] munmap(0x7fb9643a6000, 138412032 [pid 5660] <... ioctl resumed>) = 0 [pid 5660] close(3) = 0 [pid 5660] close(4) = 0 [pid 5660] mkdir("./bus", 0777 [pid 5663] <... write resumed>) = 16777216 [pid 5660] <... mkdir resumed>) = 0 [pid 5663] munmap(0x7fb9643a6000, 138412032 [pid 5661] <... munmap resumed>) = 0 [pid 5660] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5661] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5661] ioctl(4, LOOP_SET_FD, 3) = 0 [ 206.698367][ T5660] loop4: detected capacity change from 0 to 32768 [pid 5661] close(3) = 0 [pid 5663] <... munmap resumed>) = 0 [pid 5663] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5661] close(4) = 0 [pid 5663] ioctl(4, LOOP_SET_FD, 3 [pid 5661] mkdir("./bus", 0777) = 0 [pid 5663] <... ioctl resumed>) = 0 [pid 5661] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5663] close(3) = 0 [pid 5663] close(4) = 0 [pid 5663] mkdir("./bus", 0777) = 0 [pid 5660] <... mount resumed>) = 0 [pid 5660] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5663] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5660] chdir("./bus") = 0 [ 206.756346][ T5661] loop0: detected capacity change from 0 to 32768 [ 206.788539][ T5663] loop3: detected capacity change from 0 to 32768 [pid 5660] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5660] exit_group(0) = ? [pid 5661] <... mount resumed>) = 0 [pid 5661] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5661] chdir("./bus") = 0 [pid 5661] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5660] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5660, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=37 /* 0.37 s */} --- [pid 5661] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5661] exit_group(0) = ? [pid 5661] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5661, si_uid=0, si_status=0, si_utime=0, si_stime=29 /* 0.29 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5663] <... mount resumed>) = 0 [pid 5634] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5663] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] umount2("./3", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... openat resumed>) = 3 [pid 5663] <... openat resumed>) = 3 [pid 5663] chdir("./bus") = 0 [pid 5663] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5663] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5663] exit_group(0 [pid 5640] fstat(3 [pid 5634] getdents64(3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5663] <... exit_group resumed>) = ? [pid 5640] getdents64(3 [pid 5634] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./3/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./3/binderfs" [pid 5634] newfstatat(AT_FDCWD, "./3/binderfs" [pid 5663] +++ exited with 0 +++ [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./3/binderfs") = 0 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5663, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] unlink("./3/binderfs" [pid 5640] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... unlink resumed>) = 0 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5634] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./4/binderfs") = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./3/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4 [pid 5662] <... write resumed>) = 16777216 [pid 5640] <... close resumed>) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5662] munmap(0x7fb9643a6000, 138412032 [pid 5640] rmdir("./3/bus") = 0 [pid 5640] getdents64(3 [pid 5634] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] close(3) = 0 [pid 5640] rmdir("./3" [pid 5634] newfstatat(AT_FDCWD, "./3/bus" [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./3/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] mkdir("./4", 0777 [pid 5634] openat(AT_FDCWD, "./3/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... mkdir resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] getdents64(4 [pid 5662] <... munmap resumed>) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] getdents64(4 [pid 5662] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5640] <... ioctl resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(3 [pid 5662] <... openat resumed>) = 4 [pid 5634] close(4 [pid 5640] <... close resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5662] ioctl(4, LOOP_SET_FD, 3 [pid 5634] rmdir("./3/bus" [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5662] <... ioctl resumed>) = 0 [pid 5662] close(3ci2-upstream-fs/strace-static-x86_64: Process 5665 attached ) = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5665 [pid 5662] close(4) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5664] <... write resumed>) = 16777216 [pid 5664] munmap(0x7fb9643a6000, 138412032 [pid 5665] set_robust_list(0x55555d1b46e0, 24 [pid 5662] mkdir("./bus", 0777 [pid 5638] <... umount2 resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5665] <... set_robust_list resumed>) = 0 [pid 5665] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] getdents64(3 [pid 5665] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5665] chdir("./4" [pid 5638] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5665] <... chdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] close(3 [pid 5638] newfstatat(AT_FDCWD, "./4/bus" [pid 5662] <... mkdir resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./3" [pid 5665] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5662] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5665] <... prctl resumed>) = 0 [pid 5665] setpgid(0, 0 [pid 5638] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5665] <... setpgid resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5665] <... openat resumed>) = 3 [pid 5638] <... openat resumed>) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5665] write(3, "1000", 4) = 4 [pid 5664] <... munmap resumed>) = 0 [pid 5638] getdents64(4 [pid 5665] close(3) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... rmdir resumed>) = 0 [pid 5665] symlink("/dev/binderfs", "./binderfs" [pid 5634] mkdir("./4", 0777 [ 207.088063][ T5662] loop2: detected capacity change from 0 to 32768 [pid 5664] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5664] ioctl(4, LOOP_SET_FD, 3 [pid 5638] getdents64(4 [pid 5665] <... symlink resumed>) = 0 [pid 5664] <... ioctl resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... mkdir resumed>) = 0 [pid 5664] close(3) = 0 [pid 5665] write(1, "executing program\n", 18 [pid 5638] close(4 [pid 5664] close(4 [pid 5665] <... write resumed>) = 18 [pid 5664] <... close resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5664] mkdir("./bus", 0777) = 0 [pid 5634] <... openat resumed>) = 3 executing program [pid 5665] memfd_create("syzkaller", 0 [pid 5638] rmdir("./4/bus" [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5664] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5665] <... memfd_create resumed>) = 3 [pid 5638] <... rmdir resumed>) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5638] getdents64(3 [pid 5634] close(3 [pid 5665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5665] <... mmap resumed>) = 0x7fb9643a6000 [pid 5662] <... mount resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5662] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] close(3 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5662] <... openat resumed>) = 3 [pid 5638] <... close resumed>) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5664] <... mount resumed>) = 0 [pid 5664] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORYci2-upstream-fs/strace-static-x86_64: Process 5666 attached [pid 5662] chdir("./bus" [pid 5638] rmdir("./4" [pid 5662] <... chdir resumed>) = 0 [pid 5662] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5666 [pid 5664] <... openat resumed>) = 3 [pid 5666] set_robust_list(0x55555d1b46e0, 24 [pid 5662] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5666] <... set_robust_list resumed>) = 0 [pid 5664] chdir("./bus" [pid 5638] <... rmdir resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5666] rt_sigprocmask(SIG_SETMASK, [] [pid 5664] <... chdir resumed>) = 0 [pid 5662] exit_group(0 [pid 5666] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5664] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5662] <... exit_group resumed>) = ? [pid 5666] chdir("./4" [pid 5664] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] mkdir("./5", 0777 [pid 5664] exit_group(0) = ? [pid 5666] <... chdir resumed>) = 0 [pid 5666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5666] setpgid(0, 0 [pid 5664] +++ exited with 0 +++ [pid 5662] +++ exited with 0 +++ [pid 5666] <... setpgid resumed>) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5664, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=33 /* 0.33 s */} --- [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5662, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=33 /* 0.33 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5636] <... restart_syscall resumed>) = 0 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5666] <... openat resumed>) = 3 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5636] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5666] write(3, "1000", 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5666] <... write resumed>) = 4 [pid 5636] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5666] close(3 [pid 5637] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5666] <... close resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... openat resumed>) = 3 [pid 5666] symlink("/dev/binderfs", "./binderfs" [pid 5637] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] fstat(3 [pid 5637] <... openat resumed>) = 3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3 [pid 5638] <... mkdir resumed>) = 0 [pid 5637] getdents64(3 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5666] <... symlink resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5666] write(1, "executing program\n", 18 [pid 5638] <... ioctl resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5666] <... write resumed>) = 18 [pid 5638] close(3 [pid 5637] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW executing program [pid 5666] memfd_create("syzkaller", 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5666] <... memfd_create resumed>) = 3 [pid 5637] newfstatat(AT_FDCWD, "./4/binderfs" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5666] <... mmap resumed>) = 0x7fb9643a6000 [pid 5637] unlink("./4/binderfs" [pid 5636] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... unlink resumed>) = 0 [pid 5636] unlink("./4/binderfs") = 0 [pid 5636] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./4/bus" [pid 5636] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./4/bus" [pid 5637] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... openat resumed>) = 4 [pid 5636] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... openat resumed>) = 4 [pid 5637] getdents64(4 [pid 5636] fstat(4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4 [pid 5636] getdents64(4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] close(4 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... close resumed>) = 0 [pid 5636] close(4) = 0 [pid 5637] rmdir("./4/bus" [pid 5636] rmdir("./4/bus") = 0 [pid 5636] getdents64(3 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] getdents64(3 [pid 5636] close(3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./4" [pid 5637] close(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./4") = 0 [pid 5636] mkdir("./5", 0777) = 0 [pid 5637] mkdir("./5", 0777 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... openat resumed>) = 3 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5667 ci2-upstream-fs/strace-static-x86_64: Process 5667 attached [pid 5636] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5668 attached [pid 5667] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5667] <... set_robust_list resumed>) = 0 [pid 5667] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5668 [pid 5668] set_robust_list(0x55555d1b46e0, 24 [pid 5667] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5668] <... set_robust_list resumed>) = 0 [pid 5667] chdir("./5" [pid 5668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5667] <... chdir resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5668] chdir("./5" [pid 5667] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5668] <... chdir resumed>) = 0 [pid 5667] <... prctl resumed>) = 0 [pid 5668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5667] setpgid(0, 0) = 0 [pid 5668] setpgid(0, 0 [pid 5667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5668] <... setpgid resumed>) = 0 [pid 5667] <... openat resumed>) = 3 [pid 5667] write(3, "1000", 4 [pid 5668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5667] <... write resumed>) = 4 [pid 5668] <... openat resumed>) = 3 [pid 5667] close(3) = 0 [pid 5667] symlink("/dev/binderfs", "./binderfs" [pid 5668] write(3, "1000", 4 [pid 5667] <... symlink resumed>) = 0 [pid 5668] <... write resumed>) = 4 [pid 5668] close(3 executing program [pid 5667] write(1, "executing program\n", 18 [pid 5668] <... close resumed>) = 0 [pid 5667] <... write resumed>) = 18 [pid 5668] symlink("/dev/binderfs", "./binderfs" [pid 5667] memfd_create("syzkaller", 0 [pid 5668] <... symlink resumed>) = 0 [pid 5667] <... memfd_create resumed>) = 3 [pid 5668] write(1, "executing program\n", 18 [pid 5667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5668] <... write resumed>) = 18 executing program [pid 5668] memfd_create("syzkaller", 0) = 3 [pid 5668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5666] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5668] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216ci2-upstream-fs/strace-static-x86_64: Process 5669 attached [pid 5669] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5669 [pid 5669] chdir("./5" [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5669] <... chdir resumed>) = 0 [pid 5669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5669] setpgid(0, 0) = 0 [pid 5669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5669] write(3, "1000", 4) = 4 [pid 5669] close(3) = 0 [pid 5669] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5669] write(1, "executing program\n", 18) = 18 [pid 5669] memfd_create("syzkaller", 0) = 3 [pid 5669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5665] <... write resumed>) = 16777216 [pid 5665] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5665] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5665] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5665] close(3) = 0 [pid 5665] close(4) = 0 [pid 5665] mkdir("./bus", 0777) = 0 [pid 5665] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5665] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5665] chdir("./bus") = 0 [pid 5666] <... write resumed>) = 16777216 [pid 5665] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5666] munmap(0x7fb9643a6000, 138412032 [pid 5665] exit_group(0) = ? [pid 5665] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5665, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=37 /* 0.37 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5666] <... munmap resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5666] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5666] <... openat resumed>) = 4 [pid 5666] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5666] close(3 [pid 5640] <... openat resumed>) = 3 [pid 5666] <... close resumed>) = 0 [pid 5666] close(4) = 0 [pid 5666] mkdir("./bus", 0777) = 0 [pid 5640] fstat(3 [pid 5666] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5667] <... write resumed>) = 16777216 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./4/binderfs") = 0 [pid 5640] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [ 208.784596][ T5666] set_capacity_and_notify: 2 callbacks suppressed [ 208.784617][ T5666] loop0: detected capacity change from 0 to 32768 [pid 5667] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5666] <... mount resumed>) = 0 [pid 5666] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5667] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5666] <... openat resumed>) = 3 [pid 5667] <... openat resumed>) = 4 [pid 5666] chdir("./bus" [pid 5667] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5666] <... chdir resumed>) = 0 [pid 5666] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5667] close(3) = 0 [pid 5666] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5667] close(4) = 0 [pid 5666] exit_group(0 [pid 5668] <... write resumed>) = 16777216 [pid 5667] mkdir("./bus", 0777 [pid 5668] munmap(0x7fb9643a6000, 138412032 [pid 5666] <... exit_group resumed>) = ? [pid 5667] <... mkdir resumed>) = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5667] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5666] +++ exited with 0 +++ [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./4/bus" [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5666, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5668] <... munmap resumed>) = 0 [ 208.903621][ T5667] loop1: detected capacity change from 0 to 32768 [pid 5668] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5640] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5668] <... openat resumed>) = 4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5668] ioctl(4, LOOP_SET_FD, 3 [pid 5640] <... openat resumed>) = 4 [pid 5668] <... ioctl resumed>) = 0 [pid 5640] fstat(4 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5668] close(3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5668] <... close resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5668] close(4) = 0 [pid 5668] mkdir("./bus", 0777) = 0 [pid 5668] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] getdents64(4 [pid 5634] umount2("./4", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] close(4 [pid 5634] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... close resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5640] rmdir("./4/bus" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./4/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./4/binderfs") = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./4") = 0 [ 208.958044][ T5668] loop2: detected capacity change from 0 to 32768 [pid 5640] mkdir("./5", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5668] <... mount resumed>) = 0 [pid 5668] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5667] <... mount resumed>) = 0 [pid 5668] <... openat resumed>) = 3 [pid 5667] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5668] chdir("./bus") = 0 [pid 5668] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5668] exit_group(0 [pid 5667] <... openat resumed>) = 3 [pid 5667] chdir("./bus" [pid 5634] <... umount2 resumed>) = 0 [pid 5668] <... exit_group resumed>) = ? [pid 5667] <... chdir resumed>) = 0 [pid 5668] +++ exited with 0 +++ [pid 5667] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5667] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5667] exit_group(0 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5668, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=26 /* 0.26 s */} --- [pid 5634] newfstatat(AT_FDCWD, "./4/bus" [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5667] <... exit_group resumed>) = ? [pid 5637] <... restart_syscall resumed>) = 0 [pid 5634] umount2("./4/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5667] +++ exited with 0 +++ [pid 5634] openat(AT_FDCWD, "./4/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5667, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=20 /* 0.20 s */} --- [pid 5634] <... openat resumed>) = 4 [pid 5637] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] fstat(4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] getdents64(4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5637] newfstatat(AT_FDCWD, "./5/binderfs" [pid 5634] <... close resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] rmdir("./4/bus" [pid 5637] unlink("./5/binderfs" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... rmdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... unlink resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] fstat(3 [pid 5634] close(3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... close resumed>) = 0 [pid 5636] getdents64(3 [pid 5634] rmdir("./4" [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./5/binderfs") = 0 [pid 5636] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... rmdir resumed>) = 0 [pid 5634] mkdir("./5", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5670 attached [pid 5637] <... umount2 resumed>) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5670 [pid 5670] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5637] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5670] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5670] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5670] chdir("./5" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5670] <... chdir resumed>) = 0 [pid 5637] newfstatat(AT_FDCWD, "./5/bus" [pid 5670] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5670] <... prctl resumed>) = 0 [pid 5670] setpgid(0, 0 [pid 5637] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5670] <... setpgid resumed>) = 0 [pid 5670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./5/bus" [pid 5670] <... openat resumed>) = 3 [pid 5637] <... rmdir resumed>) = 0 [pid 5670] write(3, "1000", 4) = 4 [pid 5636] <... umount2 resumed>) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./5" [pid 5670] close(3 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5670] <... close resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5670] symlink("/dev/binderfs", "./binderfs" [pid 5636] newfstatat(AT_FDCWD, "./5/bus" [pid 5670] <... symlink resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5670] write(1, "executing program\n", 18 [pid 5636] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5670] <... write resumed>) = 18 [pid 5637] mkdir("./6", 0777 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) executing program [pid 5670] memfd_create("syzkaller", 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5670] <... memfd_create resumed>) = 3 [pid 5670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] <... openat resumed>) = 4 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5670] <... mmap resumed>) = 0x7fb9643a6000 [pid 5636] fstat(4 [pid 5637] <... openat resumed>) = 3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4 [pid 5637] <... ioctl resumed>) = 0 [pid 5637] close(3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] close(4 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./5/bus") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5671 attached [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5671 [pid 5636] getdents64(3 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5671] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] close(3) = 0 [pid 5671] <... set_robust_list resumed>) = 0 [pid 5671] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rmdir("./5" [pid 5671] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5671] chdir("./6" [pid 5636] mkdir("./6", 0777 [pid 5671] <... chdir resumed>) = 0 [pid 5671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5671] setpgid(0, 0) = 0 [pid 5671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5671] write(3, "1000", 4) = 4 [pid 5671] close(3 [pid 5636] <... mkdir resumed>) = 0 [pid 5671] <... close resumed>) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5671] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5636] <... openat resumed>) = 3 [pid 5669] <... write resumed>) = 16777216 [pid 5671] write(1, "executing program\n", 18 executing program [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5671] <... write resumed>) = 18 [pid 5669] munmap(0x7fb9643a6000, 138412032 [pid 5636] <... ioctl resumed>) = 0 [pid 5671] memfd_create("syzkaller", 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5671] <... memfd_create resumed>) = 3 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5672 [pid 5669] <... munmap resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5672 attached , NULL, 8) = 0 [pid 5672] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5672] chdir("./6" [pid 5669] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5672] <... chdir resumed>) = 0 [pid 5669] <... openat resumed>) = 4 [pid 5672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5672] setpgid(0, 0 [pid 5669] ioctl(4, LOOP_SET_FD, 3 [pid 5672] <... setpgid resumed>) = 0 [pid 5669] <... ioctl resumed>) = 0 [pid 5672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5669] close(3 [pid 5672] write(3, "1000", 4) = 4 [pid 5669] <... close resumed>) = 0 [pid 5669] close(4 [pid 5672] close(3) = 0 [pid 5672] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5669] <... close resumed>) = 0 [pid 5672] write(1, "executing program\n", 18 executing program [pid 5669] mkdir("./bus", 0777 [pid 5672] <... write resumed>) = 18 [pid 5669] <... mkdir resumed>) = 0 [pid 5672] memfd_create("syzkaller", 0) = 3 [pid 5672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [ 209.408518][ T5669] loop3: detected capacity change from 0 to 32768 [pid 5669] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5669] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5669] chdir("./bus") = 0 [pid 5669] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5669] exit_group(0) = ? [pid 5669] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5669, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=30 /* 0.30 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./5/binderfs") = 0 [pid 5638] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... close resumed>) = 0 [pid 5638] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] <... openat resumed>) = 4 ci2-upstream-fs/strace-static-x86_64: Process 5673 attached [pid 5638] fstat(4 [pid 5673] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5673 [pid 5638] getdents64(4 [pid 5673] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5673] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] getdents64(4 [pid 5673] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5673] chdir("./5" [pid 5638] rmdir("./5/bus" [pid 5670] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5673] <... chdir resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5673] setpgid(0, 0) = 0 [pid 5673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] getdents64(3 [pid 5673] <... openat resumed>) = 3 [pid 5673] write(3, "1000", 4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5673] <... write resumed>) = 4 [pid 5638] close(3 [pid 5673] close(3 [pid 5638] <... close resumed>) = 0 [pid 5673] <... close resumed>) = 0 [pid 5638] rmdir("./5" [pid 5673] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5673] write(1, "executing program\n", 18) = 18 executing program [pid 5673] memfd_create("syzkaller", 0) = 3 [pid 5638] mkdir("./6", 0777 [pid 5673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5638] <... mkdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216ci2-upstream-fs/strace-static-x86_64: Process 5674 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5674 [pid 5674] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5674] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5674] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5674] chdir("./6") = 0 [pid 5674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5674] setpgid(0, 0) = 0 [pid 5674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5674] write(3, "1000", 4) = 4 [pid 5674] close(3) = 0 [pid 5674] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5674] write(1, "executing program\n", 18) = 18 [pid 5674] memfd_create("syzkaller", 0 [pid 5672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5674] <... memfd_create resumed>) = 3 [pid 5674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5670] <... write resumed>) = 16777216 [pid 5670] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5670] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5670] close(3) = 0 [pid 5670] close(4) = 0 [pid 5670] mkdir("./bus", 0777) = 0 [pid 5670] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5670] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5670] chdir("./bus") = 0 [pid 5670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 210.647049][ T5670] loop0: detected capacity change from 0 to 32768 [pid 5670] exit_group(0) = ? [pid 5670] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5670, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=30 /* 0.30 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./5/binderfs") = 0 [pid 5634] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5671] <... write resumed>) = 16777216 [pid 5671] munmap(0x7fb9643a6000, 138412032 [pid 5672] <... write resumed>) = 16777216 [pid 5672] munmap(0x7fb9643a6000, 138412032 [pid 5671] <... munmap resumed>) = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5672] <... munmap resumed>) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5671] <... openat resumed>) = 4 [pid 5671] ioctl(4, LOOP_SET_FD, 3 [pid 5672] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5671] <... ioctl resumed>) = 0 [pid 5634] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5672] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5672] <... ioctl resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5672] close(3 [pid 5671] close(3 [pid 5672] <... close resumed>) = 0 [pid 5671] <... close resumed>) = 0 [pid 5672] close(4 [pid 5671] close(4 [pid 5672] <... close resumed>) = 0 [pid 5671] <... close resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5672] mkdir("./bus", 0777 [pid 5671] mkdir("./bus", 0777 [pid 5634] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5672] <... mkdir resumed>) = 0 [pid 5672] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5671] <... mkdir resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5671] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [ 210.826886][ T5671] loop2: detected capacity change from 0 to 32768 [ 210.838357][ T5672] loop1: detected capacity change from 0 to 32768 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./5/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./5") = 0 [pid 5634] mkdir("./6", 0777 [pid 5672] <... mount resumed>) = 0 [pid 5672] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5672] chdir("./bus" [pid 5671] <... mount resumed>) = 0 [pid 5634] <... mkdir resumed>) = 0 [pid 5671] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5672] <... chdir resumed>) = 0 [pid 5671] chdir("./bus" [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5672] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... openat resumed>) = 3 [pid 5671] <... chdir resumed>) = 0 [pid 5671] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5672] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5671] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5671] exit_group(0 [pid 5634] <... ioctl resumed>) = 0 [pid 5672] exit_group(0 [pid 5671] <... exit_group resumed>) = ? [pid 5634] close(3 [pid 5672] <... exit_group resumed>) = ? [pid 5671] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5671, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=30 /* 0.30 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5672] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5672, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=22 /* 0.22 s */} --- [pid 5637] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3 [pid 5637] <... openat resumed>) = 3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3 [pid 5637] fstat(3 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5636] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] newfstatat(AT_FDCWD, "./6/binderfs" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] newfstatat(AT_FDCWD, "./6/binderfs" [pid 5636] unlink("./6/binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5637] unlink("./6/binderfs" [pid 5636] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... unlink resumed>) = 0 [pid 5637] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5673] <... write resumed>) = 16777216 [pid 5673] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5673] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... umount2 resumed>) = 0 [pid 5673] <... openat resumed>) = 4 [pid 5637] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./6/bus" [pid 5673] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5673] <... ioctl resumed>) = 0 [pid 5637] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5673] close(3 [pid 5637] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... umount2 resumed>) = 0 [pid 5673] <... close resumed>) = 0 [pid 5673] close(4 [pid 5637] <... openat resumed>) = 4 [pid 5673] <... close resumed>) = 0 [pid 5637] fstat(4 [pid 5673] mkdir("./bus", 0777 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5673] <... mkdir resumed>) = 0 [pid 5637] getdents64(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] newfstatat(AT_FDCWD, "./6/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] getdents64(4 [pid 5673] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... close resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] rmdir("./6/bus" [pid 5636] fstat(4 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5637] getdents64(3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(4 [pid 5637] close(3 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./6/bus" [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./6" [pid 5636] <... rmdir resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [ 211.142586][ T5673] loop4: detected capacity change from 0 to 32768 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3 [pid 5637] mkdir("./7", 0777 [pid 5636] <... close resumed>) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] rmdir("./6" [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] <... rmdir resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5636] mkdir("./7", 0777) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5674] <... write resumed>) = 16777216 [pid 5636] close(3ci2-upstream-fs/strace-static-x86_64: Process 5675 attached [pid 5674] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5675 [pid 5636] <... close resumed>) = 0 [pid 5675] set_robust_list(0x55555d1b46e0, 24 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5675] <... set_robust_list resumed>) = 0 [pid 5675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5675] chdir("./7") = 0 [pid 5675] prctl(PR_SET_PDEATHSIG, SIGKILLci2-upstream-fs/strace-static-x86_64: Process 5676 attached ) = 0 [pid 5673] <... mount resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5676 [pid 5676] set_robust_list(0x55555d1b46e0, 24 [pid 5675] setpgid(0, 0 [pid 5673] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5676] <... set_robust_list resumed>) = 0 [pid 5675] <... setpgid resumed>) = 0 [pid 5674] <... munmap resumed>) = 0 [pid 5673] <... openat resumed>) = 3 [pid 5676] rt_sigprocmask(SIG_SETMASK, [] [pid 5675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5676] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5673] chdir("./bus" [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5676] chdir("./7" [pid 5675] <... openat resumed>) = 3 [pid 5673] <... chdir resumed>) = 0 [pid 5674] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5676] <... chdir resumed>) = 0 [pid 5674] <... openat resumed>) = 4 [pid 5675] write(3, "1000", 4 [pid 5673] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5676] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5675] <... write resumed>) = 4 [pid 5674] ioctl(4, LOOP_SET_FD, 3 [pid 5673] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5676] <... prctl resumed>) = 0 [pid 5675] close(3 [pid 5674] <... ioctl resumed>) = 0 [pid 5673] exit_group(0 [pid 5676] setpgid(0, 0) = 0 [pid 5675] <... close resumed>) = 0 [pid 5673] <... exit_group resumed>) = ? [pid 5676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5675] symlink("/dev/binderfs", "./binderfs" [pid 5676] <... openat resumed>) = 3 [pid 5674] close(3 [pid 5673] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5673, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=30 /* 0.30 s */} --- [pid 5674] <... close resumed>) = 0 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5676] write(3, "1000", 4 [pid 5674] close(4 [pid 5676] <... write resumed>) = 4 [pid 5674] <... close resumed>) = 0 [pid 5676] close(3 [pid 5674] mkdir("./bus", 0777 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5676] <... close resumed>) = 0 [pid 5676] symlink("/dev/binderfs", "./binderfs" [pid 5640] umount2("./5", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5675] <... symlink resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5676] <... symlink resumed>) = 0 [pid 5675] write(1, "executing program\n", 18 [pid 5674] <... mkdir resumed>) = 0 [pid 5640] <... openat resumed>) = 3 executing program [pid 5676] write(1, "executing program\n", 18 [pid 5675] <... write resumed>) = 18 [pid 5640] fstat(3 [pid 5676] <... write resumed>) = 18 executing program [pid 5675] memfd_create("syzkaller", 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5676] memfd_create("syzkaller", 0 [pid 5674] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5675] <... memfd_create resumed>) = 3 [pid 5640] getdents64(3 [pid 5675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5676] <... memfd_create resumed>) = 3 [pid 5675] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] umount2("./5/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5676] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 211.301691][ T5674] loop3: detected capacity change from 0 to 32768 [pid 5640] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./5/binderfs") = 0 [pid 5640] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5674] <... mount resumed>) = 0 [pid 5674] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5674] chdir("./bus") = 0 [pid 5674] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5674] exit_group(0) = ? [pid 5674] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5674, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=28 /* 0.28 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./6/binderfs") = 0 [pid 5638] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./5/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./5/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./5/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./5/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./5") = 0 [pid 5640] mkdir("./6", 0777) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5638] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./6/bus" [pid 5640] close(3ci2-upstream-fs/strace-static-x86_64: Process 5677 attached [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5677 [pid 5677] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5677] <... set_robust_list resumed>) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5677] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] fstat(4 [pid 5677] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5677] chdir("./6" [pid 5638] getdents64(4 [pid 5677] <... chdir resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5677] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] getdents64(4 [pid 5677] <... prctl resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5677] setpgid(0, 0 [pid 5638] close(4 [pid 5677] <... setpgid resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./6/bus" [pid 5677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] <... rmdir resumed>) = 0 [pid 5677] <... openat resumed>) = 3 [pid 5638] getdents64(3 [pid 5677] write(3, "1000", 4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5677] <... write resumed>) = 4 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./6" [pid 5677] close(3 [pid 5638] <... rmdir resumed>) = 0 [pid 5677] <... close resumed>) = 0 [pid 5638] mkdir("./7", 0777 [pid 5677] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... mkdir resumed>) = 0 [pid 5677] <... symlink resumed>) = 0 [pid 5677] write(1, "executing program\n", 18) = 18 executing program [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5677] memfd_create("syzkaller", 0 [pid 5638] <... openat resumed>) = 3 [pid 5677] <... memfd_create resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5677] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5678 attached , child_tidptr=0x55555d1b46d0) = 5678 [pid 5678] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5678] <... set_robust_list resumed>) = 0 [pid 5678] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5678] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5678] chdir("./7") = 0 [pid 5678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5678] setpgid(0, 0) = 0 [pid 5678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5678] write(3, "1000", 4) = 4 [pid 5678] close(3) = 0 [pid 5678] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5678] write(1, "executing program\n", 18) = 18 executing program [pid 5678] memfd_create("syzkaller", 0) = 3 [pid 5678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5677] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5679 attached [pid 5679] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5679 [pid 5679] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5679] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5679] chdir("./6" [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5679] <... chdir resumed>) = 0 [pid 5679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5679] setpgid(0, 0) = 0 [pid 5679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5679] write(3, "1000", 4) = 4 [pid 5679] close(3) = 0 [pid 5679] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5679] write(1, "executing program\n", 18) = 18 executing program [pid 5679] memfd_create("syzkaller", 0) = 3 [pid 5679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5675] <... write resumed>) = 16777216 [pid 5675] munmap(0x7fb9643a6000, 138412032 [pid 5676] <... write resumed>) = 16777216 [pid 5676] munmap(0x7fb9643a6000, 138412032 [pid 5675] <... munmap resumed>) = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5675] ioctl(4, LOOP_SET_FD, 3 [pid 5676] <... munmap resumed>) = 0 [pid 5676] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5676] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5676] close(3 [pid 5675] <... ioctl resumed>) = 0 [pid 5676] <... close resumed>) = 0 [pid 5676] close(4) = 0 [pid 5675] close(3 [pid 5676] mkdir("./bus", 0777) = 0 [pid 5675] <... close resumed>) = 0 [pid 5675] close(4) = 0 [pid 5675] mkdir("./bus", 0777 [ 212.869865][ T5676] loop1: detected capacity change from 0 to 32768 [pid 5676] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5675] <... mkdir resumed>) = 0 [pid 5675] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5676] <... mount resumed>) = 0 [pid 5676] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5676] chdir("./bus") = 0 [pid 5676] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5676] exit_group(0) = ? [pid 5676] +++ exited with 0 +++ [pid 5675] <... mount resumed>) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5676, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} --- [pid 5675] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5675] <... openat resumed>) = 3 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5675] chdir("./bus") = 0 [pid 5675] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5675] exit_group(0 [pid 5636] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3 [pid 5675] <... exit_group resumed>) = ? [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5675] +++ exited with 0 +++ [pid 5636] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./7/binderfs" [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5675, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=38 /* 0.38 s */} --- [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] unlink("./7/binderfs" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... unlink resumed>) = 0 [pid 5637] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./7/binderfs" [pid 5677] <... write resumed>) = 16777216 [pid 5637] <... unlink resumed>) = 0 [pid 5677] munmap(0x7fb9643a6000, 138412032 [pid 5637] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./7/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5677] <... munmap resumed>) = 0 [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5636] rmdir("./7" [pid 5677] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... rmdir resumed>) = 0 [pid 5677] <... ioctl resumed>) = 0 [pid 5677] close(3 [pid 5636] mkdir("./8", 0777 [pid 5677] <... close resumed>) = 0 [pid 5677] close(4 [pid 5636] <... mkdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5677] <... close resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5677] mkdir("./bus", 0777 [pid 5637] <... umount2 resumed>) = 0 [pid 5677] <... mkdir resumed>) = 0 [pid 5637] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5677] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, ""ci2-upstream-fs/strace-static-x86_64: Process 5680 attached [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5680 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] newfstatat(AT_FDCWD, "./7/bus" [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5680] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5680] <... set_robust_list resumed>) = 0 [pid 5637] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5680] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5680] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5680] chdir("./8" [pid 5637] <... openat resumed>) = 4 [pid 5680] <... chdir resumed>) = 0 [pid 5637] fstat(4 [pid 5680] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5680] <... prctl resumed>) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5680] setpgid(0, 0 [pid 5637] getdents64(4 [pid 5680] <... setpgid resumed>) = 0 [pid 5680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5680] write(3, "1000", 4 [pid 5637] rmdir("./7/bus" [pid 5680] <... write resumed>) = 4 [pid 5677] <... mount resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5680] close(3 [pid 5637] getdents64(3 [pid 5680] <... close resumed>) = 0 [pid 5677] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5680] symlink("/dev/binderfs", "./binderfs" [pid 5677] <... openat resumed>) = 3 [pid 5637] close(3 [pid 5680] <... symlink resumed>) = 0 [pid 5677] chdir("./bus" [pid 5637] <... close resumed>) = 0 [pid 5677] <... chdir resumed>) = 0 [pid 5637] rmdir("./7" [pid 5680] write(1, "executing program\n", 18 executing program [pid 5677] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5680] <... write resumed>) = 18 [pid 5678] <... write resumed>) = 16777216 [pid 5677] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] <... rmdir resumed>) = 0 [pid 5680] memfd_create("syzkaller", 0 [pid 5677] exit_group(0 [pid 5680] <... memfd_create resumed>) = 3 [pid 5678] munmap(0x7fb9643a6000, 138412032 [pid 5677] <... exit_group resumed>) = ? [pid 5680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5637] mkdir("./8", 0777 [pid 5680] <... mmap resumed>) = 0x7fb9643a6000 [pid 5637] <... mkdir resumed>) = 0 [pid 5677] +++ exited with 0 +++ [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5677, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=31 /* 0.31 s */} --- [pid 5637] <... ioctl resumed>) = 0 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] close(3 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5681 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5681 attached [pid 5681] set_robust_list(0x55555d1b46e0, 24 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] getdents64(3 [pid 5681] <... set_robust_list resumed>) = 0 [pid 5678] <... munmap resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5681] rt_sigprocmask(SIG_SETMASK, [] [pid 5678] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5681] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5678] <... openat resumed>) = 4 [pid 5634] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5681] chdir("./8" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5681] <... chdir resumed>) = 0 [pid 5678] ioctl(4, LOOP_SET_FD, 3 [pid 5634] newfstatat(AT_FDCWD, "./6/binderfs" [pid 5678] <... ioctl resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5681] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] unlink("./6/binderfs" [pid 5681] <... prctl resumed>) = 0 [pid 5678] close(3) = 0 [pid 5681] setpgid(0, 0 [pid 5678] close(4 [pid 5634] <... unlink resumed>) = 0 [pid 5681] <... setpgid resumed>) = 0 [pid 5678] <... close resumed>) = 0 [pid 5634] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5678] mkdir("./bus", 0777) = 0 [pid 5678] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5681] <... openat resumed>) = 3 [pid 5681] write(3, "1000", 4) = 4 [pid 5681] close(3) = 0 [pid 5681] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5681] write(1, "executing program\n", 18) = 18 [pid 5681] memfd_create("syzkaller", 0) = 3 [pid 5681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5678] <... mount resumed>) = 0 [pid 5678] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5678] chdir("./bus") = 0 [pid 5678] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5678] exit_group(0) = ? [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./6/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5678] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5678, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=25 /* 0.25 s */} --- [pid 5634] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5638] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] getdents64(4 [pid 5638] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5634] close(4 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./6/bus" [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] <... rmdir resumed>) = 0 [pid 5638] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] getdents64(3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] newfstatat(AT_FDCWD, "./7/binderfs" [pid 5634] close(3 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... close resumed>) = 0 [pid 5638] unlink("./7/binderfs" [pid 5634] rmdir("./6" [pid 5638] <... unlink resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5638] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] mkdir("./7", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3 [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4 [pid 5679] <... write resumed>) = 16777216 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./7/bus") = 0 [pid 5679] munmap(0x7fb9643a6000, 138412032 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./7") = 0 [pid 5638] mkdir("./8", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5679] <... munmap resumed>) = 0 [pid 5638] close(3) = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5679] <... openat resumed>) = 4 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5679] ioctl(4, LOOP_SET_FD, 3 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5679] <... ioctl resumed>) = 0 [pid 5679] close(3 [pid 5680] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5679] <... close resumed>) = 0 [pid 5679] close(4) = 0 [pid 5679] mkdir("./bus", 0777ci2-upstream-fs/strace-static-x86_64: Process 5682 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5682 [pid 5682] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5682] rt_sigprocmask(SIG_SETMASK, [] [pid 5679] <... mkdir resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5682] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5682] chdir("./8" [pid 5679] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5682] <... chdir resumed>) = 0 [pid 5682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5682] setpgid(0, 0) = 0 [ 213.812643][ T5679] set_capacity_and_notify: 3 callbacks suppressed [ 213.812666][ T5679] loop4: detected capacity change from 0 to 32768 [pid 5682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5682] write(3, "1000", 4) = 4 [pid 5682] close(3) = 0 [pid 5682] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5682] write(1, "executing program\n", 18) = 18 [pid 5682] memfd_create("syzkaller", 0) = 3 [pid 5682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5679] <... mount resumed>) = 0 [pid 5679] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5679] chdir("./bus") = 0 [pid 5679] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5682] <... mmap resumed>) = 0x7fb9643a6000 [pid 5679] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5679] exit_group(0) = ? [pid 5679] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5679, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./6", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./6/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./6/binderfs") = 0 [pid 5640] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5640] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./6/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./6/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./6/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./6/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./6") = 0 [pid 5640] mkdir("./7", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5683 attached , child_tidptr=0x55555d1b46d0) = 5683 [pid 5683] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5683] chdir("./7") = 0 [pid 5683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5683] setpgid(0, 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5683] <... setpgid resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5683] write(3, "1000", 4) = 4 [pid 5683] close(3) = 0 [pid 5683] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5683] write(1, "executing program\n", 18) = 18 executing program [pid 5683] memfd_create("syzkaller", 0) = 3 [pid 5683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216ci2-upstream-fs/strace-static-x86_64: Process 5684 attached [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5684 [pid 5684] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5684] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5684] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5684] chdir("./7") = 0 [pid 5684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5684] setpgid(0, 0) = 0 [pid 5684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5684] write(3, "1000", 4) = 4 [pid 5684] close(3) = 0 [pid 5684] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5684] write(1, "executing program\n", 18) = 18 [pid 5684] memfd_create("syzkaller", 0) = 3 [pid 5684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5684] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5680] <... write resumed>) = 16777216 [pid 5680] munmap(0x7fb9643a6000, 138412032 [pid 5681] <... write resumed>) = 16777216 [pid 5680] <... munmap resumed>) = 0 [pid 5680] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5681] munmap(0x7fb9643a6000, 138412032 [pid 5680] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5680] close(3) = 0 [pid 5680] close(4) = 0 [pid 5680] mkdir("./bus", 0777) = 0 [pid 5680] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5681] <... munmap resumed>) = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [ 215.107411][ T5680] loop1: detected capacity change from 0 to 32768 [pid 5681] ioctl(4, LOOP_SET_FD, 3 [pid 5680] <... mount resumed>) = 0 [pid 5680] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5680] chdir("./bus") = 0 [pid 5680] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5680] exit_group(0) = ? [pid 5681] <... ioctl resumed>) = 0 [pid 5680] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5680, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=33 /* 0.33 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5681] close(3 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5681] <... close resumed>) = 0 [pid 5681] close(4) = 0 [pid 5636] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5681] mkdir("./bus", 0777 [pid 5636] <... openat resumed>) = 3 [pid 5681] <... mkdir resumed>) = 0 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [ 215.183283][ T5681] loop2: detected capacity change from 0 to 32768 [pid 5681] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./8/binderfs") = 0 [pid 5636] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5681] <... mount resumed>) = 0 [pid 5681] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5681] chdir("./bus") = 0 [pid 5681] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5681] exit_group(0) = ? [pid 5681] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5681, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=35 /* 0.35 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./8/binderfs") = 0 [pid 5637] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5682] <... write resumed>) = 16777216 [pid 5636] <... umount2 resumed>) = 0 [pid 5682] munmap(0x7fb9643a6000, 138412032 [pid 5636] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4 [pid 5682] <... munmap resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./8/bus") = 0 [pid 5682] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... umount2 resumed>) = 0 [pid 5636] getdents64(3 [pid 5682] <... openat resumed>) = 4 [pid 5682] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3 [pid 5637] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... close resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] rmdir("./8" [pid 5682] <... ioctl resumed>) = 0 [pid 5637] newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5682] close(3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... rmdir resumed>) = 0 [pid 5682] <... close resumed>) = 0 [pid 5637] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] mkdir("./9", 0777 [pid 5682] close(4 [pid 5637] <... openat resumed>) = 4 [pid 5636] <... mkdir resumed>) = 0 [pid 5682] <... close resumed>) = 0 [pid 5682] mkdir("./bus", 0777 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5637] close(4) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5682] <... mkdir resumed>) = 0 [pid 5637] rmdir("./8/bus" [pid 5636] <... ioctl resumed>) = 0 [pid 5682] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 215.469269][ T5682] loop3: detected capacity change from 0 to 32768 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5685 attached [pid 5682] <... mount resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5682] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5685] set_robust_list(0x55555d1b46e0, 24 [pid 5637] getdents64(3 [pid 5685] <... set_robust_list resumed>) = 0 [pid 5682] <... openat resumed>) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5685 [pid 5685] rt_sigprocmask(SIG_SETMASK, [] [pid 5682] chdir("./bus" [pid 5685] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5682] <... chdir resumed>) = 0 [pid 5637] close(3 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5685] chdir("./9" [pid 5682] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... close resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5682] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] rmdir("./8" [pid 5685] <... chdir resumed>) = 0 [pid 5682] exit_group(0 [pid 5685] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5682] <... exit_group resumed>) = ? [pid 5637] <... rmdir resumed>) = 0 [pid 5685] <... prctl resumed>) = 0 [pid 5685] setpgid(0, 0) = 0 [pid 5682] +++ exited with 0 +++ [pid 5637] mkdir("./9", 0777 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5682, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=31 /* 0.31 s */} --- [pid 5637] <... mkdir resumed>) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5685] <... openat resumed>) = 3 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5638] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5685] write(3, "1000", 4 [pid 5638] getdents64(3 [pid 5685] <... write resumed>) = 4 [pid 5685] close(3 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5685] <... close resumed>) = 0 [pid 5685] symlink("/dev/binderfs", "./binderfs" [pid 5637] <... ioctl resumed>) = 0 [pid 5638] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] close(3 [pid 5638] unlink("./8/binderfs" [pid 5637] <... close resumed>) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5685] <... symlink resumed>) = 0 [pid 5685] write(1, "executing program\n", 18) = 18 executing program [pid 5685] memfd_create("syzkaller", 0ci2-upstream-fs/strace-static-x86_64: Process 5686 attached ) = 3 [pid 5685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5686] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5686] rt_sigprocmask(SIG_SETMASK, [] [pid 5685] <... mmap resumed>) = 0x7fb9643a6000 [pid 5686] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5686] chdir("./9") = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5686 [pid 5686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5686] setpgid(0, 0) = 0 [pid 5686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5686] <... openat resumed>) = 3 [pid 5686] write(3, "1000", 4) = 4 [pid 5686] close(3) = 0 [pid 5686] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5686] write(1, "executing program\n", 18) = 18 executing program [pid 5686] memfd_create("syzkaller", 0) = 3 [pid 5686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5684] <... write resumed>) = 16777216 [pid 5684] munmap(0x7fb9643a6000, 138412032 [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5683] <... write resumed>) = 16777216 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5683] munmap(0x7fb9643a6000, 138412032 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./8/bus" [pid 5684] <... munmap resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5684] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] getdents64(3 [pid 5684] <... openat resumed>) = 4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5684] ioctl(4, LOOP_SET_FD, 3 [pid 5638] close(3) = 0 [pid 5638] rmdir("./8") = 0 [pid 5684] <... ioctl resumed>) = 0 [pid 5638] mkdir("./9", 0777) = 0 [pid 5684] close(3) = 0 [pid 5684] close(4 [pid 5683] <... munmap resumed>) = 0 [pid 5684] <... close resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5683] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5684] mkdir("./bus", 0777 [pid 5683] <... openat resumed>) = 4 [pid 5638] <... openat resumed>) = 3 [pid 5684] <... mkdir resumed>) = 0 [pid 5683] ioctl(4, LOOP_SET_FD, 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5684] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] close(3 [pid 5683] <... ioctl resumed>) = 0 [pid 5683] close(3 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5683] <... close resumed>) = 0 [pid 5683] close(4 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5683] <... close resumed>) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5683] mkdir("./bus", 0777) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5687 attached [pid 5687] set_robust_list(0x55555d1b46e0, 24 [pid 5683] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5687 [pid 5687] <... set_robust_list resumed>) = 0 [ 215.791462][ T5684] loop0: detected capacity change from 0 to 32768 [ 215.820899][ T5683] loop4: detected capacity change from 0 to 32768 [pid 5687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5684] <... mount resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5687] chdir("./9" [pid 5684] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5687] <... chdir resumed>) = 0 [pid 5684] <... openat resumed>) = 3 [pid 5683] <... mount resumed>) = 0 [pid 5687] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5684] chdir("./bus" [pid 5683] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5687] <... prctl resumed>) = 0 [pid 5684] <... chdir resumed>) = 0 [pid 5687] setpgid(0, 0 [pid 5684] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5683] <... openat resumed>) = 3 [pid 5687] <... setpgid resumed>) = 0 [pid 5684] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5683] chdir("./bus" [pid 5687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5684] exit_group(0 [pid 5683] <... chdir resumed>) = 0 [pid 5687] <... openat resumed>) = 3 [pid 5684] <... exit_group resumed>) = ? [pid 5687] write(3, "1000", 4 [pid 5683] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5687] <... write resumed>) = 4 [pid 5684] +++ exited with 0 +++ [pid 5687] close(3 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5684, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=26 /* 0.26 s */} --- [pid 5687] <... close resumed>) = 0 [pid 5687] symlink("/dev/binderfs", "./binderfs" [pid 5683] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5687] <... symlink resumed>) = 0 [pid 5683] exit_group(0 [pid 5687] write(1, "executing program\n", 18 [pid 5683] <... exit_group resumed>) = ? [pid 5687] <... write resumed>) = 18 [pid 5634] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5687] memfd_create("syzkaller", 0) = 3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) executing program [pid 5687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5634] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5687] <... mmap resumed>) = 0x7fb9643a6000 [pid 5683] +++ exited with 0 +++ [pid 5634] <... openat resumed>) = 3 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5683, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=31 /* 0.31 s */} --- [pid 5634] fstat(3 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5634] getdents64(3 [pid 5640] umount2("./7", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./7/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./7/binderfs" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] newfstatat(AT_FDCWD, "./7/binderfs" [pid 5640] unlink("./7/binderfs" [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./7/binderfs" [pid 5640] <... unlink resumed>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5640] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./7/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./7/bus" [pid 5640] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5634] umount2("./7/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] fstat(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] openat(AT_FDCWD, "./7/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] getdents64(4 [pid 5634] <... openat resumed>) = 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] fstat(4 [pid 5640] getdents64(4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... close resumed>) = 0 [pid 5634] getdents64(4 [pid 5640] rmdir("./7/bus") = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./7/bus" [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./7") = 0 [pid 5685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] mkdir("./8", 0777) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] close(3 [pid 5640] <... ioctl resumed>) = 0 [pid 5640] close(3 [pid 5634] <... close resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] rmdir("./7" [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] mkdir("./8", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5688 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5688 attached [pid 5634] close(3 [pid 5688] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... close resumed>) = 0 [pid 5688] <... set_robust_list resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5688] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5688] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5688] chdir("./8") = 0 [pid 5688] prctl(PR_SET_PDEATHSIG, SIGKILLci2-upstream-fs/strace-static-x86_64: Process 5689 attached ) = 0 [pid 5688] setpgid(0, 0 [pid 5689] set_robust_list(0x55555d1b46e0, 24 [pid 5688] <... setpgid resumed>) = 0 [pid 5689] <... set_robust_list resumed>) = 0 [pid 5688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5689 [pid 5689] rt_sigprocmask(SIG_SETMASK, [] [pid 5688] <... openat resumed>) = 3 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5689] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5689] chdir("./8") = 0 [pid 5688] write(3, "1000", 4 [pid 5689] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5688] <... write resumed>) = 4 [pid 5689] <... prctl resumed>) = 0 [pid 5688] close(3 [pid 5689] setpgid(0, 0 [pid 5688] <... close resumed>) = 0 [pid 5689] <... setpgid resumed>) = 0 [pid 5688] symlink("/dev/binderfs", "./binderfs" [pid 5689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5688] <... symlink resumed>) = 0 [pid 5689] <... openat resumed>) = 3 [pid 5688] write(1, "executing program\n", 18) = 18 executing program [pid 5689] write(3, "1000", 4) = 4 [pid 5689] close(3) = 0 [pid 5689] symlink("/dev/binderfs", "./binderfs" [pid 5688] memfd_create("syzkaller", 0) = 3 [pid 5688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5689] <... symlink resumed>) = 0 [pid 5689] write(1, "executing program\n", 18) = 18 executing program [pid 5689] memfd_create("syzkaller", 0) = 3 [pid 5689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5689] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5685] <... write resumed>) = 16777216 [pid 5685] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5685] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5685] close(3) = 0 [pid 5685] close(4) = 0 [pid 5685] mkdir("./bus", 0777) = 0 [ 217.419612][ T5685] loop1: detected capacity change from 0 to 32768 [pid 5685] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5686] <... write resumed>) = 16777216 [pid 5686] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5686] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5686] ioctl(4, LOOP_SET_FD, 3 [pid 5685] <... mount resumed>) = 0 [pid 5686] <... ioctl resumed>) = 0 [pid 5685] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5686] close(3 [pid 5685] <... openat resumed>) = 3 [pid 5686] <... close resumed>) = 0 [pid 5686] close(4 [pid 5685] chdir("./bus" [pid 5686] <... close resumed>) = 0 [pid 5686] mkdir("./bus", 0777 [pid 5685] <... chdir resumed>) = 0 [pid 5685] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5685] exit_group(0) = ? [pid 5685] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5685, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=28 /* 0.28 s */} --- [ 217.538575][ T5686] loop2: detected capacity change from 0 to 32768 [pid 5636] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5686] <... mkdir resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5686] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./9/binderfs") = 0 [pid 5636] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5686] <... mount resumed>) = 0 [pid 5686] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5686] chdir("./bus") = 0 [pid 5686] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5686] exit_group(0) = ? [pid 5686] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5686, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=24 /* 0.24 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5687] <... write resumed>) = 16777216 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5687] munmap(0x7fb9643a6000, 138412032 [pid 5637] unlink("./9/binderfs") = 0 [pid 5637] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./9/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5687] <... munmap resumed>) = 0 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5636] getdents64(4 [pid 5687] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5687] close(3 [pid 5636] rmdir("./9/bus" [pid 5687] <... close resumed>) = 0 [pid 5687] close(4) = 0 [pid 5687] mkdir("./bus", 0777) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5687] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] getdents64(3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] newfstatat(AT_FDCWD, "./9/bus" [pid 5636] close(3 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... close resumed>) = 0 [pid 5637] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] rmdir("./9" [pid 5689] <... write resumed>) = 16777216 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... rmdir resumed>) = 0 [pid 5689] munmap(0x7fb9643a6000, 138412032 [pid 5637] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] mkdir("./10", 0777 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [ 217.757830][ T5687] loop3: detected capacity change from 0 to 32768 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] getdents64(4 [pid 5636] <... openat resumed>) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5637] <... close resumed>) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5637] rmdir("./9/bus" [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5689] <... munmap resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5689] <... openat resumed>) = 4 [pid 5689] ioctl(4, LOOP_SET_FD, 3ci2-upstream-fs/strace-static-x86_64: Process 5690 attached [pid 5687] <... mount resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5690] set_robust_list(0x55555d1b46e0, 24 [pid 5687] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] getdents64(3 [pid 5690] <... set_robust_list resumed>) = 0 [pid 5687] <... openat resumed>) = 3 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5690 [pid 5687] chdir("./bus" [pid 5690] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5687] <... chdir resumed>) = 0 [pid 5690] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5687] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] close(3 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5690] chdir("./10" [pid 5688] <... write resumed>) = 16777216 [pid 5687] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] <... close resumed>) = 0 [pid 5690] <... chdir resumed>) = 0 [pid 5689] <... ioctl resumed>) = 0 [pid 5688] munmap(0x7fb9643a6000, 138412032 [pid 5687] exit_group(0 [pid 5637] rmdir("./9") = 0 [pid 5637] mkdir("./10", 0777 [pid 5690] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5689] close(3 [pid 5687] <... exit_group resumed>) = ? [pid 5689] <... close resumed>) = 0 [pid 5689] close(4 [pid 5690] <... prctl resumed>) = 0 [pid 5690] setpgid(0, 0 [pid 5689] <... close resumed>) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5690] <... setpgid resumed>) = 0 [pid 5689] mkdir("./bus", 0777 [pid 5687] +++ exited with 0 +++ [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5689] <... mkdir resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5687, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=30 /* 0.30 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5689] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5690] <... openat resumed>) = 3 [pid 5638] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5690] write(3, "1000", 4 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5690] <... write resumed>) = 4 [pid 5638] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5690] close(3 [pid 5688] <... munmap resumed>) = 0 [pid 5690] <... close resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5691 attached [pid 5691] set_robust_list(0x55555d1b46e0, 24 [pid 5690] symlink("/dev/binderfs", "./binderfs" [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5691 [pid 5691] <... set_robust_list resumed>) = 0 [pid 5688] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] <... openat resumed>) = 3 [pid 5691] rt_sigprocmask(SIG_SETMASK, [] [pid 5688] <... openat resumed>) = 4 [pid 5638] fstat(3 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5691] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5688] ioctl(4, LOOP_SET_FD, 3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [ 217.875014][ T5689] loop0: detected capacity change from 0 to 32768 [pid 5691] chdir("./10" [pid 5690] <... symlink resumed>) = 0 [pid 5688] <... ioctl resumed>) = 0 [pid 5638] getdents64(3 [pid 5691] <... chdir resumed>) = 0 [pid 5690] write(1, "executing program\n", 18 [pid 5689] <... mount resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 executing program [pid 5691] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5690] <... write resumed>) = 18 [pid 5689] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5691] <... prctl resumed>) = 0 [pid 5690] memfd_create("syzkaller", 0 [pid 5688] close(3 [pid 5638] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5691] setpgid(0, 0 [pid 5689] <... openat resumed>) = 3 [pid 5688] <... close resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5689] chdir("./bus" [pid 5691] <... setpgid resumed>) = 0 [pid 5690] <... memfd_create resumed>) = 3 [pid 5689] <... chdir resumed>) = 0 [pid 5688] close(4 [pid 5638] newfstatat(AT_FDCWD, "./9/binderfs" [pid 5691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5689] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5688] <... close resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5691] <... openat resumed>) = 3 [pid 5690] <... mmap resumed>) = 0x7fb9643a6000 [pid 5689] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5688] mkdir("./bus", 0777 [pid 5638] unlink("./9/binderfs" [pid 5691] write(3, "1000", 4 [pid 5689] exit_group(0 [pid 5688] <... mkdir resumed>) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5691] <... write resumed>) = 4 [pid 5689] <... exit_group resumed>) = ? [pid 5691] close(3) = 0 [pid 5688] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5691] symlink("/dev/binderfs", "./binderfs" [pid 5638] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5691] <... symlink resumed>) = 0 [pid 5691] write(1, "executing program\n", 18 [pid 5689] +++ exited with 0 +++ [pid 5691] <... write resumed>) = 18 executing program [pid 5691] memfd_create("syzkaller", 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5689, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=36 /* 0.36 s */} --- [pid 5691] <... memfd_create resumed>) = 3 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5691] <... mmap resumed>) = 0x7fb9643a6000 [pid 5634] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5688] <... mount resumed>) = 0 [pid 5634] getdents64(3 [pid 5688] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5688] chdir("./bus") = 0 [pid 5634] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5688] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5688] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5688] exit_group(0) = ? [pid 5634] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./8/binderfs" [pid 5688] +++ exited with 0 +++ [pid 5638] <... umount2 resumed>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5688, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5638] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... restart_syscall resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./9/bus" [pid 5640] umount2("./8", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... openat resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] fstat(3 [pid 5638] <... openat resumed>) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3 [pid 5638] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] umount2("./8/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] getdents64(4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4 [pid 5640] newfstatat(AT_FDCWD, "./8/binderfs" [pid 5638] <... close resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] rmdir("./9/bus" [pid 5640] unlink("./8/binderfs" [pid 5638] <... rmdir resumed>) = 0 [pid 5640] <... unlink resumed>) = 0 [pid 5640] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./9") = 0 [pid 5638] mkdir("./10", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5692 attached , child_tidptr=0x55555d1b46d0) = 5692 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5692] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5692] chdir("./10") = 0 [pid 5692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5692] setpgid(0, 0) = 0 [pid 5692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5692] write(3, "1000", 4) = 4 [pid 5692] close(3) = 0 [pid 5692] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5692] write(1, "executing program\n", 18) = 18 executing program [pid 5692] memfd_create("syzkaller", 0) = 3 [pid 5692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./8/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4 [pid 5634] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(4 [pid 5634] newfstatat(AT_FDCWD, "./8/bus" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./8/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] getdents64(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] openat(AT_FDCWD, "./8/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] close(4) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5640] rmdir("./8/bus" [pid 5634] fstat(4 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(3 [pid 5634] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5634] close(4 [pid 5640] rmdir("./8" [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./8/bus") = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] getdents64(3 [pid 5640] mkdir("./9", 0777 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./8" [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5693 attached [pid 5634] <... rmdir resumed>) = 0 [pid 5693] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5693] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5693 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5693] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] mkdir("./9", 0777 [pid 5693] chdir("./9" [pid 5634] <... mkdir resumed>) = 0 [pid 5693] <... chdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5693] setpgid(0, 0) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5634] <... ioctl resumed>) = 0 [pid 5693] write(3, "1000", 4) = 4 [pid 5634] close(3 [pid 5693] close(3 [pid 5634] <... close resumed>) = 0 [pid 5693] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5693] symlink("/dev/binderfs", "./binderfs" [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5694 attached , child_tidptr=0x55555d1b46d0) = 5694 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5694] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5694] <... set_robust_list resumed>) = 0 [pid 5694] rt_sigprocmask(SIG_SETMASK, [] [pid 5693] <... symlink resumed>) = 0 [pid 5694] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5694] chdir("./9" executing program [pid 5693] write(1, "executing program\n", 18 [pid 5694] <... chdir resumed>) = 0 [pid 5693] <... write resumed>) = 18 [pid 5694] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5693] memfd_create("syzkaller", 0 [pid 5694] <... prctl resumed>) = 0 [pid 5693] <... memfd_create resumed>) = 3 [pid 5694] setpgid(0, 0) = 0 [pid 5693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5694] write(3, "1000", 4) = 4 [pid 5694] close(3) = 0 [pid 5694] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5694] write(1, "executing program\n", 18) = 18 [pid 5694] memfd_create("syzkaller", 0) = 3 [pid 5694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5690] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5694] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5691] <... write resumed>) = 16777216 [pid 5691] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5691] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5691] close(3) = 0 [pid 5691] close(4) = 0 [pid 5691] mkdir("./bus", 0777) = 0 [ 219.489014][ T5691] set_capacity_and_notify: 1 callbacks suppressed [ 219.489037][ T5691] loop2: detected capacity change from 0 to 32768 [pid 5691] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5691] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5691] chdir("./bus") = 0 [pid 5691] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5691] exit_group(0) = ? [pid 5691] +++ exited with 0 +++ [pid 5690] <... write resumed>) = 16777216 [pid 5693] <... write resumed>) = 16777216 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5691, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=34 /* 0.34 s */} --- [pid 5690] munmap(0x7fb9643a6000, 138412032 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5693] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5637] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./10/binderfs") = 0 [pid 5690] <... munmap resumed>) = 0 [pid 5637] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5693] <... munmap resumed>) = 0 [pid 5690] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5693] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5690] <... openat resumed>) = 4 [pid 5693] <... openat resumed>) = 4 [pid 5690] ioctl(4, LOOP_SET_FD, 3 [pid 5693] ioctl(4, LOOP_SET_FD, 3 [pid 5690] <... ioctl resumed>) = 0 [pid 5690] close(3) = 0 [pid 5690] close(4 [pid 5693] <... ioctl resumed>) = 0 [pid 5690] <... close resumed>) = 0 [pid 5693] close(3 [pid 5690] mkdir("./bus", 0777 [pid 5693] <... close resumed>) = 0 [pid 5690] <... mkdir resumed>) = 0 [pid 5693] close(4) = 0 [pid 5690] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5693] mkdir("./bus", 0777) = 0 [ 219.681777][ T5690] loop1: detected capacity change from 0 to 32768 [ 219.682768][ T5693] loop4: detected capacity change from 0 to 32768 [pid 5693] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5693] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5637] <... umount2 resumed>) = 0 [pid 5693] chdir("./bus") = 0 [pid 5693] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5637] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5693] exit_group(0 [pid 5690] <... mount resumed>) = 0 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5693] <... exit_group resumed>) = ? [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5690] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] getdents64(4 [pid 5690] <... openat resumed>) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5690] chdir("./bus" [pid 5637] close(4 [pid 5693] +++ exited with 0 +++ [pid 5690] <... chdir resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5690] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5693, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5637] rmdir("./10/bus" [pid 5690] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] <... rmdir resumed>) = 0 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5690] exit_group(0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] close(3 [pid 5690] <... exit_group resumed>) = ? [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... close resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3 [pid 5637] rmdir("./10" [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5694] <... write resumed>) = 16777216 [pid 5690] +++ exited with 0 +++ [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] mkdir("./11", 0777 [pid 5640] newfstatat(AT_FDCWD, "./9/binderfs" [pid 5637] <... mkdir resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5690, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=34 /* 0.34 s */} --- [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5640] unlink("./9/binderfs" [pid 5636] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5694] munmap(0x7fb9643a6000, 138412032 [pid 5640] <... unlink resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./10/binderfs" [pid 5637] close(3) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] unlink("./10/binderfs" [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... unlink resumed>) = 0 [pid 5636] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOWci2-upstream-fs/strace-static-x86_64: Process 5695 attached [pid 5694] <... munmap resumed>) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5695 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5695] set_robust_list(0x55555d1b46e0, 24 [pid 5694] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5695] <... set_robust_list resumed>) = 0 [pid 5695] rt_sigprocmask(SIG_SETMASK, [] [pid 5694] <... ioctl resumed>) = 0 [pid 5695] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5694] close(3) = 0 [pid 5695] chdir("./11" [pid 5694] close(4 [pid 5695] <... chdir resumed>) = 0 [pid 5694] <... close resumed>) = 0 [pid 5695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5694] mkdir("./bus", 0777 [pid 5695] setpgid(0, 0 [pid 5694] <... mkdir resumed>) = 0 [pid 5695] <... setpgid resumed>) = 0 [pid 5695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5694] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5695] <... openat resumed>) = 3 [pid 5695] write(3, "1000", 4) = 4 [pid 5695] close(3) = 0 [pid 5695] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5695] write(1, "executing program\n", 18) = 18 executing program [pid 5695] memfd_create("syzkaller", 0) = 3 [pid 5695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [ 219.895624][ T5694] loop0: detected capacity change from 0 to 32768 [pid 5640] <... umount2 resumed>) = 0 [pid 5692] <... write resumed>) = 16777216 [pid 5640] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5694] <... mount resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./9/bus" [pid 5694] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5694] chdir("./bus" [pid 5692] munmap(0x7fb9643a6000, 138412032 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5694] <... chdir resumed>) = 0 [pid 5640] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5694] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5694] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] getdents64(4 [pid 5636] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5694] exit_group(0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] getdents64(4 [pid 5694] <... exit_group resumed>) = ? [pid 5636] <... openat resumed>) = 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] fstat(4 [pid 5640] close(4 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... close resumed>) = 0 [pid 5636] getdents64(4 [pid 5640] rmdir("./9/bus") = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5694] +++ exited with 0 +++ [pid 5640] getdents64(3 [pid 5636] getdents64(4 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5694, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=27 /* 0.27 s */} --- [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4 [pid 5692] <... munmap resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... close resumed>) = 0 [pid 5692] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] close(3 [pid 5636] rmdir("./10/bus" [pid 5692] <... openat resumed>) = 4 [pid 5634] umount2("./9", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5692] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... rmdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5692] <... ioctl resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5636] getdents64(3 [pid 5640] rmdir("./9" [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] fstat(3 [pid 5636] close(3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... close resumed>) = 0 [pid 5692] close(3 [pid 5634] getdents64(3 [pid 5692] <... close resumed>) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5636] rmdir("./10" [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5692] close(4) = 0 [pid 5692] mkdir("./bus", 0777) = 0 [pid 5640] mkdir("./10", 0777 [pid 5636] <... rmdir resumed>) = 0 [pid 5634] umount2("./9/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... mkdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5692] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] newfstatat(AT_FDCWD, "./9/binderfs" [pid 5636] mkdir("./11", 0777 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] <... mkdir resumed>) = 0 [pid 5634] unlink("./9/binderfs" [pid 5640] <... openat resumed>) = 3 [pid 5634] <... unlink resumed>) = 0 [ 220.024446][ T5692] loop3: detected capacity change from 0 to 32768 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... ioctl resumed>) = 0 [pid 5640] close(3 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5640] <... close resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5697 attached ci2-upstream-fs/strace-static-x86_64: Process 5696 attached [pid 5697] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5697] rt_sigprocmask(SIG_SETMASK, [] [pid 5696] set_robust_list(0x55555d1b46e0, 24 [pid 5697] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5696 [pid 5696] <... set_robust_list resumed>) = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5697 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5696] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5696] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5697] chdir("./10" [pid 5696] chdir("./11" [pid 5697] <... chdir resumed>) = 0 [pid 5697] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5696] <... chdir resumed>) = 0 [pid 5697] <... prctl resumed>) = 0 [pid 5696] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5697] setpgid(0, 0 [pid 5696] <... prctl resumed>) = 0 [pid 5697] <... setpgid resumed>) = 0 [pid 5697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5696] setpgid(0, 0 [pid 5697] <... openat resumed>) = 3 [pid 5696] <... setpgid resumed>) = 0 [pid 5697] write(3, "1000", 4 [pid 5696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5697] <... write resumed>) = 4 [pid 5697] close(3 [pid 5696] <... openat resumed>) = 3 [pid 5634] <... umount2 resumed>) = 0 [pid 5697] <... close resumed>) = 0 [pid 5696] write(3, "1000", 4 [pid 5697] symlink("/dev/binderfs", "./binderfs" [pid 5696] <... write resumed>) = 4 [pid 5634] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5697] <... symlink resumed>) = 0 [pid 5696] close(3) = 0 [pid 5697] write(1, "executing program\n", 18 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5696] symlink("/dev/binderfs", "./binderfs" [pid 5692] <... mount resumed>) = 0 [pid 5697] <... write resumed>) = 18 [pid 5696] <... symlink resumed>) = 0 executing program [pid 5634] newfstatat(AT_FDCWD, "./9/bus" [pid 5697] memfd_create("syzkaller", 0 [pid 5696] write(1, "executing program\n", 18 executing program [pid 5692] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5697] <... memfd_create resumed>) = 3 [pid 5696] <... write resumed>) = 18 [pid 5692] <... openat resumed>) = 3 [pid 5697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5696] memfd_create("syzkaller", 0 [pid 5692] chdir("./bus" [pid 5634] umount2("./9/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5697] <... mmap resumed>) = 0x7fb9643a6000 [pid 5696] <... memfd_create resumed>) = 3 [pid 5692] <... chdir resumed>) = 0 [pid 5692] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5692] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] openat(AT_FDCWD, "./9/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5696] <... mmap resumed>) = 0x7fb9643a6000 [pid 5634] <... openat resumed>) = 4 [pid 5692] exit_group(0) = ? [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5692] +++ exited with 0 +++ [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5692, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=25 /* 0.25 s */} --- [pid 5634] close(4 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... close resumed>) = 0 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5634] rmdir("./9/bus" [pid 5638] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... rmdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... close resumed>) = 0 [pid 5638] getdents64(3 [pid 5634] rmdir("./9" [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] <... rmdir resumed>) = 0 [pid 5638] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] mkdir("./10", 0777 [pid 5638] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./10/binderfs" [pid 5634] <... mkdir resumed>) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5638] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... ioctl resumed>) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5698 attached , child_tidptr=0x55555d1b46d0) = 5698 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5698] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5698] chdir("./10") = 0 [pid 5698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5698] setpgid(0, 0) = 0 [pid 5698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5698] write(3, "1000", 4) = 4 [pid 5698] close(3) = 0 [pid 5698] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5698] write(1, "executing program\n", 18) = 18 [pid 5698] memfd_create("syzkaller", 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./10/bus" [pid 5698] <... memfd_create resumed>) = 3 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] getdents64(4 [pid 5698] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./10/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./10") = 0 [pid 5638] mkdir("./11", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3 [pid 5696] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5698] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5699 ci2-upstream-fs/strace-static-x86_64: Process 5699 attached [pid 5699] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5699] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5699] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5699] chdir("./11") = 0 [pid 5699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5699] setpgid(0, 0) = 0 [pid 5699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5699] write(3, "1000", 4) = 4 [pid 5699] close(3) = 0 [pid 5699] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5699] write(1, "executing program\n", 18) = 18 [pid 5699] memfd_create("syzkaller", 0) = 3 executing program [pid 5699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5698] <... write resumed>) = 16777216 [pid 5698] munmap(0x7fb9643a6000, 138412032 [pid 5699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5698] <... munmap resumed>) = 0 [pid 5695] <... write resumed>) = 16777216 [pid 5698] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5695] munmap(0x7fb9643a6000, 138412032 [pid 5698] <... openat resumed>) = 4 [pid 5698] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5698] close(3) = 0 [pid 5698] close(4) = 0 [pid 5698] mkdir("./bus", 0777 [pid 5695] <... munmap resumed>) = 0 [pid 5698] <... mkdir resumed>) = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5698] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [ 221.524726][ T5698] loop0: detected capacity change from 0 to 32768 [pid 5695] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5695] close(3) = 0 [pid 5695] close(4) = 0 [pid 5695] mkdir("./bus", 0777) = 0 [ 221.573457][ T5695] loop2: detected capacity change from 0 to 32768 [pid 5695] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5696] <... write resumed>) = 16777216 [pid 5698] <... mount resumed>) = 0 [pid 5696] munmap(0x7fb9643a6000, 138412032 [pid 5698] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5698] chdir("./bus") = 0 [pid 5698] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5698] exit_group(0) = ? [pid 5698] +++ exited with 0 +++ [pid 5697] <... write resumed>) = 16777216 [pid 5695] <... mount resumed>) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5698, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=36 /* 0.36 s */} --- [pid 5697] munmap(0x7fb9643a6000, 138412032 [pid 5695] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5695] chdir("./bus") = 0 [pid 5695] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5634] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5695] exit_group(0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5695] <... exit_group resumed>) = ? [pid 5634] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5695] +++ exited with 0 +++ [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./10/binderfs" [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5695, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=36 /* 0.36 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5697] <... munmap resumed>) = 0 [pid 5696] <... munmap resumed>) = 0 [pid 5696] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5696] <... openat resumed>) = 4 [pid 5697] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5696] ioctl(4, LOOP_SET_FD, 3 [pid 5697] <... openat resumed>) = 4 [pid 5696] <... ioctl resumed>) = 0 [pid 5697] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5637] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5697] close(3 [pid 5696] close(3 [pid 5637] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5696] <... close resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5697] <... close resumed>) = 0 [pid 5696] close(4 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5697] close(4 [pid 5696] <... close resumed>) = 0 [pid 5637] getdents64(3 [pid 5697] <... close resumed>) = 0 [pid 5696] mkdir("./bus", 0777 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5697] mkdir("./bus", 0777 [pid 5696] <... mkdir resumed>) = 0 [pid 5697] <... mkdir resumed>) = 0 [pid 5637] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./11/binderfs" [pid 5696] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./11/binderfs" [pid 5697] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... unlink resumed>) = 0 [ 221.771313][ T5696] loop1: detected capacity change from 0 to 32768 [ 221.773318][ T5697] loop4: detected capacity change from 0 to 32768 [pid 5637] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./10/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5697] <... mount resumed>) = 0 [pid 5696] <... mount resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5697] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5696] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5697] <... openat resumed>) = 3 [pid 5696] <... openat resumed>) = 3 [pid 5634] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5697] chdir("./bus" [pid 5696] chdir("./bus" [pid 5634] <... openat resumed>) = 4 [pid 5697] <... chdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5697] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5696] <... chdir resumed>) = 0 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5697] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5696] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5697] exit_group(0 [pid 5696] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] getdents64(4 [pid 5696] exit_group(0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5697] <... exit_group resumed>) = ? [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5696] <... exit_group resumed>) = ? [pid 5637] newfstatat(AT_FDCWD, "./11/bus" [pid 5634] getdents64(4 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] close(4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5696] +++ exited with 0 +++ [pid 5637] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... close resumed>) = 0 [pid 5697] +++ exited with 0 +++ [pid 5637] <... openat resumed>) = 4 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5696, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=22 /* 0.22 s */} --- [pid 5634] rmdir("./10/bus" [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5697, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... rmdir resumed>) = 0 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] <... close resumed>) = 0 [pid 5634] close(3 [pid 5637] rmdir("./11/bus" [pid 5640] umount2("./10", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... close resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] rmdir("./10" [pid 5640] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... rmdir resumed>) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5636] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] mkdir("./11", 0777 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... mkdir resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] fstat(3 [pid 5634] <... openat resumed>) = 3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] umount2("./10/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] getdents64(3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5640] newfstatat(AT_FDCWD, "./10/binderfs" [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... ioctl resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] close(3 [pid 5640] unlink("./10/binderfs" [pid 5636] newfstatat(AT_FDCWD, "./11/binderfs" [pid 5640] <... unlink resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5640] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(3 [pid 5636] unlink("./11/binderfs" [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5637] close(3) = 0 [pid 5636] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] rmdir("./11") = 0 [pid 5637] mkdir("./12", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5700 attached , child_tidptr=0x55555d1b46d0) = 5700 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5700] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5700] chdir("./12") = 0 [pid 5700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5700] setpgid(0, 0) = 0 [pid 5700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5700] write(3, "1000", 4 [pid 5640] <... umount2 resumed>) = 0 [pid 5700] <... write resumed>) = 4 [pid 5636] <... umount2 resumed>) = 0 [pid 5700] close(3 [pid 5640] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5700] <... close resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5700] symlink("/dev/binderfs", "./binderfs" [pid 5640] newfstatat(AT_FDCWD, "./10/bus" [pid 5700] <... symlink resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] newfstatat(AT_FDCWD, "./11/bus" [pid 5640] umount2("./10/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5700] write(1, "executing program\n", 18 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5700] <... write resumed>) = 18 executing program [pid 5640] openat(AT_FDCWD, "./10/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5700] memfd_create("syzkaller", 0 [pid 5640] <... openat resumed>) = 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] fstat(4 [pid 5636] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5700] <... memfd_create resumed>) = 3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... openat resumed>) = 4 [pid 5636] fstat(4 [pid 5700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] getdents64(4 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5700] <... mmap resumed>) = 0x7fb9643a6000 [pid 5636] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4 [pid 5640] getdents64(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./11/bus" [pid 5640] close(4) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5640] rmdir("./10/bus" [pid 5636] getdents64(3 [pid 5640] <... rmdir resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./11") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5636] mkdir("./12", 0777) = 0 [pid 5640] rmdir("./10" [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5701 attached , child_tidptr=0x55555d1b46d0) = 5701 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5701] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5701] chdir("./12") = 0 [pid 5701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5701] setpgid(0, 0) = 0 [pid 5701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5701] write(3, "1000", 4) = 4 [pid 5701] close(3) = 0 [pid 5701] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5701] write(1, "executing program\n", 18) = 18 executing program [pid 5701] memfd_create("syzkaller", 0 [pid 5640] mkdir("./11", 0777 [pid 5701] <... memfd_create resumed>) = 3 [pid 5640] <... mkdir resumed>) = 0 [pid 5701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5702 attached , child_tidptr=0x55555d1b46d0) = 5702 [pid 5702] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5702] <... set_robust_list resumed>) = 0 [pid 5699] <... write resumed>) = 16777216 [pid 5702] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5702] chdir("./11") = 0 [pid 5702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5699] munmap(0x7fb9643a6000, 138412032 [pid 5702] setpgid(0, 0) = 0 [pid 5702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5702] write(3, "1000", 4) = 4 [pid 5702] close(3) = 0 [pid 5702] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5702] write(1, "executing program\n", 18) = 18 [pid 5702] memfd_create("syzkaller", 0) = 3 [pid 5702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5699] <... munmap resumed>) = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5699] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5699] close(3) = 0 [pid 5699] close(4) = 0 [pid 5699] mkdir("./bus", 0777) = 0 [ 222.313552][ T5699] loop3: detected capacity change from 0 to 32768 [pid 5699] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5699] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5699] chdir("./bus") = 0 [pid 5699] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5699] exit_group(0) = ? [pid 5699] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5699, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5638] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./11/binderfs") = 0 [pid 5638] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5700] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./11/bus" [pid 5634] <... close resumed>) = 0 [pid 5701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5703 attached , child_tidptr=0x55555d1b46d0) = 5703 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5703] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5703] <... set_robust_list resumed>) = 0 [pid 5703] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rmdir resumed>) = 0 [pid 5703] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./11" [pid 5703] chdir("./11" [pid 5638] <... rmdir resumed>) = 0 [pid 5703] <... chdir resumed>) = 0 [pid 5638] mkdir("./12", 0777 [pid 5703] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] <... mkdir resumed>) = 0 [pid 5703] <... prctl resumed>) = 0 [pid 5703] setpgid(0, 0) = 0 [pid 5703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5703] <... openat resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5703] write(3, "1000", 4) = 4 [pid 5703] close(3) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5703] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5703] <... symlink resumed>) = 0 [pid 5703] write(1, "executing program\n", 18) = 18 executing program [pid 5703] memfd_create("syzkaller", 0ci2-upstream-fs/strace-static-x86_64: Process 5704 attached ) = 3 [pid 5702] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5704 [pid 5704] set_robust_list(0x55555d1b46e0, 24 [pid 5703] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5704] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5704] chdir("./12") = 0 [pid 5704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5704] setpgid(0, 0) = 0 [pid 5704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5704] write(3, "1000", 4) = 4 [pid 5704] close(3) = 0 [pid 5704] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5704] write(1, "executing program\n", 18) = 18 [pid 5704] memfd_create("syzkaller", 0) = 3 [pid 5704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5704] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5700] <... write resumed>) = 16777216 [pid 5700] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5700] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5700] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5700] close(3) = 0 [pid 5700] close(4) = 0 [pid 5700] mkdir("./bus", 0777) = 0 [pid 5700] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5701] <... write resumed>) = 16777216 [pid 5700] <... mount resumed>) = 0 [pid 5700] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5701] munmap(0x7fb9643a6000, 138412032 [pid 5700] chdir("./bus") = 0 [pid 5700] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5700] exit_group(0) = ? [pid 5700] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5700, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=38 /* 0.38 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5701] <... munmap resumed>) = 0 [pid 5701] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5701] <... openat resumed>) = 4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5701] ioctl(4, LOOP_SET_FD, 3 [pid 5637] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3 [pid 5702] <... write resumed>) = 16777216 [pid 5701] <... ioctl resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5702] munmap(0x7fb9643a6000, 138412032 [pid 5637] getdents64(3 [pid 5701] close(3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5701] <... close resumed>) = 0 [pid 5637] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5701] close(4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5701] <... close resumed>) = 0 [pid 5637] newfstatat(AT_FDCWD, "./12/binderfs" [pid 5701] mkdir("./bus", 0777 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./12/binderfs") = 0 [pid 5637] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5702] <... munmap resumed>) = 0 [pid 5702] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5702] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5702] close(3 [pid 5701] <... mkdir resumed>) = 0 [pid 5702] <... close resumed>) = 0 [pid 5702] close(4) = 0 [pid 5702] mkdir("./bus", 0777) = 0 [pid 5701] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5702] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5702] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5702] chdir("./bus") = 0 [pid 5702] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5702] exit_group(0) = ? [pid 5701] <... mount resumed>) = 0 [pid 5701] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5637] <... umount2 resumed>) = 0 [pid 5701] chdir("./bus" [pid 5702] +++ exited with 0 +++ [pid 5701] <... chdir resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5702, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=26 /* 0.26 s */} --- [pid 5701] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5701] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] <... restart_syscall resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./12/bus" [pid 5701] exit_group(0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5701] <... exit_group resumed>) = ? [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5640] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... openat resumed>) = 3 [pid 5701] +++ exited with 0 +++ [pid 5637] getdents64(4 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5701, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5637] close(4 [pid 5636] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... close resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] rmdir("./12/bus" [pid 5636] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] newfstatat(AT_FDCWD, "./11/binderfs" [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] fstat(3 [pid 5640] unlink("./11/binderfs" [pid 5637] getdents64(3 [pid 5640] <... unlink resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] close(3) = 0 [pid 5636] getdents64(3 [pid 5640] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] rmdir("./12" [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] mkdir("./13", 0777 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... mkdir resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5636] unlink("./12/binderfs" [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] <... unlink resumed>) = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5637] close(3 [pid 5636] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5705 attached , child_tidptr=0x55555d1b46d0) = 5705 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5705] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5705] chdir("./13") = 0 [pid 5705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5705] setpgid(0, 0) = 0 [pid 5705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5705] write(3, "1000", 4) = 4 [pid 5705] close(3) = 0 [pid 5705] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5705] write(1, "executing program\n", 18) = 18 executing program [pid 5705] memfd_create("syzkaller", 0) = 3 [pid 5705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./12/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] fstat(4 [pid 5636] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4 [pid 5636] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] fstat(4 [pid 5640] close(4 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... close resumed>) = 0 [pid 5636] getdents64(4 [pid 5640] rmdir("./11/bus" [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... rmdir resumed>) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./12/bus") = 0 [pid 5640] getdents64(3 [pid 5636] getdents64(3 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3 [pid 5640] close(3) = 0 [pid 5636] <... close resumed>) = 0 [pid 5640] rmdir("./11" [pid 5636] rmdir("./12") = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5640] mkdir("./12", 0777 [pid 5636] mkdir("./13", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5640] <... mkdir resumed>) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] <... openat resumed>) = 3 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] ioctl(3, LOOP_CLR_FDci2-upstream-fs/strace-static-x86_64: Process 5706 attached ) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5706] set_robust_list(0x55555d1b46e0, 24 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5706 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5706] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5706] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5707 attached , NULL, 8) = 0 [pid 5707] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5707 [pid 5707] <... set_robust_list resumed>) = 0 [pid 5707] rt_sigprocmask(SIG_SETMASK, [] [pid 5706] chdir("./13" [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5707] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5706] <... chdir resumed>) = 0 [pid 5706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5707] chdir("./12") = 0 [pid 5706] setpgid(0, 0) = 0 [pid 5707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5707] setpgid(0, 0 [pid 5706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5707] <... setpgid resumed>) = 0 [pid 5707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5706] <... openat resumed>) = 3 [pid 5707] <... openat resumed>) = 3 [pid 5706] write(3, "1000", 4 [pid 5707] write(3, "1000", 4 [pid 5706] <... write resumed>) = 4 [pid 5706] close(3) = 0 [pid 5706] symlink("/dev/binderfs", "./binderfs" [pid 5707] <... write resumed>) = 4 [pid 5706] <... symlink resumed>) = 0 [pid 5707] close(3) = 0 [pid 5707] symlink("/dev/binderfs", "./binderfs" [pid 5706] write(1, "executing program\n", 18 [pid 5707] <... symlink resumed>) = 0 executing program [pid 5706] <... write resumed>) = 18 [pid 5707] write(1, "executing program\n", 18) = 18 executing program [pid 5707] memfd_create("syzkaller", 0 [pid 5706] memfd_create("syzkaller", 0 [pid 5707] <... memfd_create resumed>) = 3 [pid 5706] <... memfd_create resumed>) = 3 [pid 5707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5707] <... mmap resumed>) = 0x7fb9643a6000 [pid 5706] <... mmap resumed>) = 0x7fb9643a6000 [pid 5704] <... write resumed>) = 16777216 [pid 5704] munmap(0x7fb9643a6000, 138412032 [pid 5703] <... write resumed>) = 16777216 [pid 5703] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5704] <... munmap resumed>) = 0 [pid 5703] <... openat resumed>) = 4 [pid 5703] ioctl(4, LOOP_SET_FD, 3 [pid 5704] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5703] <... ioctl resumed>) = 0 [pid 5704] ioctl(4, LOOP_SET_FD, 3 [pid 5703] close(3 [pid 5704] <... ioctl resumed>) = 0 [pid 5703] <... close resumed>) = 0 [pid 5703] close(4) = 0 [pid 5704] close(3 [pid 5703] mkdir("./bus", 0777 [pid 5704] <... close resumed>) = 0 [pid 5704] close(4) = 0 [pid 5704] mkdir("./bus", 0777) = 0 [pid 5704] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5704] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5703] <... mkdir resumed>) = 0 [pid 5704] chdir("./bus") = 0 [pid 5703] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5704] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5704] exit_group(0) = ? [pid 5704] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5704, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=23 /* 0.23 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5703] <... mount resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5703] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... openat resumed>) = 3 [pid 5703] <... openat resumed>) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5703] chdir("./bus" [pid 5638] getdents64(3 [pid 5703] <... chdir resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5703] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5703] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./12/binderfs" [pid 5703] exit_group(0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5703] <... exit_group resumed>) = ? [pid 5638] unlink("./12/binderfs") = 0 [pid 5638] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5703] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5703, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./11", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./11/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./11/binderfs") = 0 [pid 5634] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] <... umount2 resumed>) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5634] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./11/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] umount2("./11/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./11/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] newfstatat(AT_FDCWD, "./12/bus" [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... close resumed>) = 0 [pid 5638] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] rmdir("./11/bus" [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... rmdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] getdents64(3 [pid 5638] fstat(4 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] close(3 [pid 5638] getdents64(4 [pid 5634] <... close resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4 [pid 5634] rmdir("./11" [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./12/bus") = 0 [pid 5634] mkdir("./12", 0777) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] rmdir("./12" [pid 5634] <... openat resumed>) = 3 [pid 5638] <... rmdir resumed>) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] mkdir("./13", 0777 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 ci2-upstream-fs/strace-static-x86_64: Process 5708 attached [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5708 [pid 5708] set_robust_list(0x55555d1b46e0, 24 [pid 5638] close(3 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5708] <... set_robust_list resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5708] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5708] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5708] chdir("./12" [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5708] <... chdir resumed>) = 0 [pid 5708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5708] setpgid(0, 0) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5709 attached [pid 5708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5709] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5708] <... openat resumed>) = 3 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5709 [pid 5709] rt_sigprocmask(SIG_SETMASK, [] [pid 5708] write(3, "1000", 4 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5708] <... write resumed>) = 4 [pid 5709] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5709] chdir("./13" [pid 5708] close(3 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5709] <... chdir resumed>) = 0 [pid 5708] <... close resumed>) = 0 [pid 5706] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5709] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5708] symlink("/dev/binderfs", "./binderfs" [pid 5709] <... prctl resumed>) = 0 [pid 5708] <... symlink resumed>) = 0 [pid 5709] setpgid(0, 0) = 0 [pid 5709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5708] write(1, "executing program\n", 18) = 18 [pid 5709] write(3, "1000", 4 [pid 5708] memfd_create("syzkaller", 0 [pid 5709] <... write resumed>) = 4 executing program [pid 5709] close(3 [pid 5708] <... memfd_create resumed>) = 3 [pid 5709] <... close resumed>) = 0 [pid 5708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5709] symlink("/dev/binderfs", "./binderfs" [pid 5708] <... mmap resumed>) = 0x7fb9643a6000 [pid 5709] <... symlink resumed>) = 0 [pid 5709] write(1, "executing program\n", 18) = 18 executing program [pid 5709] memfd_create("syzkaller", 0) = 3 [pid 5709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5705] <... write resumed>) = 16777216 [pid 5705] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5705] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5705] close(3) = 0 [pid 5705] close(4) = 0 [pid 5705] mkdir("./bus", 0777) = 0 [ 225.573809][ T5705] set_capacity_and_notify: 5 callbacks suppressed [ 225.573832][ T5705] loop2: detected capacity change from 0 to 32768 [pid 5705] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5706] <... write resumed>) = 16777216 [pid 5706] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5705] <... mount resumed>) = 0 [pid 5706] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5705] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5706] <... openat resumed>) = 4 [pid 5705] <... openat resumed>) = 3 [pid 5706] ioctl(4, LOOP_SET_FD, 3 [pid 5705] chdir("./bus") = 0 [pid 5705] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5706] <... ioctl resumed>) = 0 [pid 5705] exit_group(0) = ? [pid 5706] close(3) = 0 [pid 5706] close(4) = 0 [pid 5706] mkdir("./bus", 0777 [pid 5705] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5705, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=32 /* 0.32 s */} --- [pid 5706] <... mkdir resumed>) = 0 [pid 5637] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5706] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [ 225.692326][ T5706] loop1: detected capacity change from 0 to 32768 [pid 5637] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./13/binderfs") = 0 [pid 5637] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5707] <... write resumed>) = 16777216 [pid 5706] <... mount resumed>) = 0 [pid 5707] munmap(0x7fb9643a6000, 138412032 [pid 5708] <... write resumed>) = 16777216 [pid 5706] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5708] munmap(0x7fb9643a6000, 138412032 [pid 5706] chdir("./bus") = 0 [pid 5706] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5706] exit_group(0) = ? [pid 5708] <... munmap resumed>) = 0 [pid 5706] +++ exited with 0 +++ [pid 5708] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5706, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=23 /* 0.23 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5708] <... openat resumed>) = 4 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5708] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5707] <... munmap resumed>) = 0 [pid 5636] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5708] close(3 [pid 5636] fstat(3 [pid 5708] <... close resumed>) = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5708] close(4) = 0 [pid 5707] <... openat resumed>) = 4 [pid 5636] getdents64(3 [pid 5708] mkdir("./bus", 0777 [pid 5707] ioctl(4, LOOP_SET_FD, 3 [pid 5708] <... mkdir resumed>) = 0 [pid 5707] <... ioctl resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5707] close(3) = 0 [pid 5636] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5707] close(4) = 0 [pid 5708] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5707] mkdir("./bus", 0777 [pid 5637] <... umount2 resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./13/binderfs" [pid 5707] <... mkdir resumed>) = 0 [pid 5637] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5707] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] unlink("./13/binderfs" [pid 5637] newfstatat(AT_FDCWD, "./13/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5636] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 225.839560][ T5708] loop0: detected capacity change from 0 to 32768 [ 225.859045][ T5707] loop4: detected capacity change from 0 to 32768 [pid 5637] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4 [pid 5709] <... write resumed>) = 16777216 [pid 5708] <... mount resumed>) = 0 [pid 5707] <... mount resumed>) = 0 [pid 5709] munmap(0x7fb9643a6000, 138412032 [pid 5707] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5707] chdir("./bus" [pid 5708] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5707] <... chdir resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5707] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5708] <... openat resumed>) = 3 [pid 5637] getdents64(4 [pid 5707] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5708] chdir("./bus" [pid 5637] getdents64(4 [pid 5708] <... chdir resumed>) = 0 [pid 5707] exit_group(0 [pid 5708] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5708] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] close(4 [pid 5707] <... exit_group resumed>) = ? [pid 5637] <... close resumed>) = 0 [pid 5708] exit_group(0 [pid 5637] rmdir("./13/bus" [pid 5709] <... munmap resumed>) = 0 [pid 5708] <... exit_group resumed>) = ? [pid 5707] +++ exited with 0 +++ [pid 5709] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5707, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=34 /* 0.34 s */} --- [pid 5709] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5709] close(3 [pid 5708] +++ exited with 0 +++ [pid 5709] <... close resumed>) = 0 [pid 5709] close(4 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5708, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5640] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... restart_syscall resumed>) = 0 [pid 5709] <... close resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... rmdir resumed>) = 0 [pid 5709] mkdir("./bus", 0777 [pid 5640] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] getdents64(3 [pid 5709] <... mkdir resumed>) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5709] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... umount2 resumed>) = 0 [pid 5640] fstat(3 [pid 5637] close(3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... close resumed>) = 0 [pid 5640] getdents64(3 [pid 5637] rmdir("./13" [pid 5634] umount2("./12", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] newfstatat(AT_FDCWD, "./13/bus" [pid 5640] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] mkdir("./14", 0777 [pid 5634] <... openat resumed>) = 3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5709] <... mount resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./12/binderfs" [pid 5634] fstat(3 [pid 5709] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5709] <... openat resumed>) = 3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5709] chdir("./bus" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 225.975197][ T5709] loop3: detected capacity change from 0 to 32768 [pid 5634] getdents64(3 [pid 5709] <... chdir resumed>) = 0 [pid 5640] unlink("./12/binderfs" [pid 5636] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5709] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] <... unlink resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5709] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./12/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5709] exit_group(0 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] <... openat resumed>) = 4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./12/binderfs" [pid 5709] <... exit_group resumed>) = ? [pid 5636] fstat(4 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5709] +++ exited with 0 +++ [pid 5637] <... openat resumed>) = 3 [pid 5636] getdents64(4 [pid 5634] unlink("./12/binderfs" [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... unlink resumed>) = 0 [pid 5636] getdents64(4 [pid 5634] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5709, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=32 /* 0.32 s */} --- [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5636] close(4 [pid 5637] close(3 [pid 5636] <... close resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5636] rmdir("./13/bus" [pid 5638] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] <... rmdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] getdents64(3 [pid 5638] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5636] close(3 [pid 5638] fstat(3 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./13" [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 ci2-upstream-fs/strace-static-x86_64: Process 5710 attached [pid 5638] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5710 [pid 5710] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5710] <... set_robust_list resumed>) = 0 [pid 5638] newfstatat(AT_FDCWD, "./13/binderfs" [pid 5710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5638] unlink("./13/binderfs" [pid 5710] chdir("./14") = 0 [pid 5710] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5636] mkdir("./14", 0777 [pid 5710] <... prctl resumed>) = 0 [pid 5710] setpgid(0, 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5710] <... setpgid resumed>) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5638] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5710] write(3, "1000", 4 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5710] <... write resumed>) = 4 [pid 5710] close(3 [pid 5636] <... openat resumed>) = 3 [pid 5710] <... close resumed>) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5710] symlink("/dev/binderfs", "./binderfs" [pid 5636] <... ioctl resumed>) = 0 [pid 5710] <... symlink resumed>) = 0 [pid 5636] close(3) = 0 [pid 5710] write(1, "executing program\n", 18 [pid 5640] <... umount2 resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5710] <... write resumed>) = 18 executing program [pid 5710] memfd_create("syzkaller", 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5710] <... memfd_create resumed>) = 3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] newfstatat(AT_FDCWD, "./12/bus" [pid 5710] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) ci2-upstream-fs/strace-static-x86_64: Process 5711 attached [pid 5640] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5711 [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] fstat(4 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5711] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(4 [pid 5711] <... set_robust_list resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./12/bus" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5711] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5711] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] getdents64(4 [pid 5634] umount2("./12/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5711] chdir("./14" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./12/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5711] <... chdir resumed>) = 0 [pid 5640] close(4 [pid 5711] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] <... close resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5711] <... prctl resumed>) = 0 [pid 5711] setpgid(0, 0 [pid 5640] rmdir("./12/bus" [pid 5634] fstat(4 [pid 5711] <... setpgid resumed>) = 0 [pid 5711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5711] <... openat resumed>) = 3 [pid 5640] getdents64(3 [pid 5634] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5711] write(3, "1000", 4 [pid 5640] close(3 [pid 5638] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5711] <... write resumed>) = 4 [pid 5640] <... close resumed>) = 0 [pid 5634] getdents64(4 [pid 5640] rmdir("./12" [pid 5711] close(3) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5711] symlink("/dev/binderfs", "./binderfs" [pid 5638] newfstatat(AT_FDCWD, "./13/bus" [pid 5634] close(4 [pid 5711] <... symlink resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... close resumed>) = 0 [pid 5638] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] rmdir("./12/bus" [pid 5640] mkdir("./13", 0777) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5711] write(1, "executing program\n", 18 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... rmdir resumed>) = 0 [pid 5638] <... openat resumed>) = 4 executing program [pid 5711] <... write resumed>) = 18 [pid 5640] <... openat resumed>) = 3 [pid 5638] fstat(4 [pid 5634] getdents64(3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5711] memfd_create("syzkaller", 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5638] getdents64(4 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] <... ioctl resumed>) = 0 [pid 5634] close(3 [pid 5640] close(3 [pid 5711] <... memfd_create resumed>) = 3 [pid 5634] <... close resumed>) = 0 [pid 5711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... close resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] rmdir("./12" [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5711] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] <... rmdir resumed>) = 0 [pid 5638] close(4 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] mkdir("./13", 0777 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] rmdir("./13/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5712 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./13") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5712 attached [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... mkdir resumed>) = 0 [pid 5712] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5712] <... set_robust_list resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5712] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] mkdir("./14", 0777 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5712] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5712] chdir("./13" [pid 5638] <... mkdir resumed>) = 0 [pid 5634] close(3 [pid 5712] <... chdir resumed>) = 0 [pid 5712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5712] setpgid(0, 0) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5712] <... openat resumed>) = 3 [pid 5638] close(3) = 0 [pid 5712] write(3, "1000", 4 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5712] <... write resumed>) = 4 [pid 5712] close(3 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5712] <... close resumed>) = 0 [pid 5712] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5712] write(1, "executing program\n", 18ci2-upstream-fs/strace-static-x86_64: Process 5713 attached ) = 18 [pid 5712] memfd_create("syzkaller", 0 [pid 5713] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5713 [pid 5712] <... memfd_create resumed>) = 3 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5712] <... mmap resumed>) = 0x7fb9643a6000 executing program [pid 5713] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5713] chdir("./14") = 0 [pid 5713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5713] setpgid(0, 0) = 0 [pid 5713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5713] write(3, "1000", 4) = 4 [pid 5713] close(3) = 0 [pid 5713] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5713] write(1, "executing program\n", 18) = 18 executing program [pid 5713] memfd_create("syzkaller", 0) = 3 [pid 5713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5713] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5714 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5714 attached [pid 5714] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5714] chdir("./13") = 0 [pid 5714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5714] setpgid(0, 0) = 0 [pid 5714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5714] write(3, "1000", 4) = 4 [pid 5714] close(3) = 0 [pid 5714] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5714] write(1, "executing program\n", 18) = 18 executing program [pid 5714] memfd_create("syzkaller", 0) = 3 [pid 5714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5714] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5710] <... write resumed>) = 16777216 [pid 5711] <... write resumed>) = 16777216 [pid 5710] munmap(0x7fb9643a6000, 138412032 [pid 5711] munmap(0x7fb9643a6000, 138412032 [pid 5710] <... munmap resumed>) = 0 [pid 5711] <... munmap resumed>) = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5710] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5711] <... openat resumed>) = 4 [pid 5710] <... openat resumed>) = 4 [pid 5711] ioctl(4, LOOP_SET_FD, 3 [pid 5710] ioctl(4, LOOP_SET_FD, 3 [pid 5711] <... ioctl resumed>) = 0 [pid 5710] <... ioctl resumed>) = 0 [pid 5711] close(3) = 0 [pid 5711] close(4) = 0 [pid 5711] mkdir("./bus", 0777 [pid 5710] close(3 [pid 5711] <... mkdir resumed>) = 0 [pid 5710] <... close resumed>) = 0 [pid 5710] close(4 [pid 5711] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5710] <... close resumed>) = 0 [pid 5710] mkdir("./bus", 0777) = 0 [ 227.624467][ T5710] loop2: detected capacity change from 0 to 32768 [ 227.625216][ T5711] loop1: detected capacity change from 0 to 32768 [pid 5710] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5711] <... mount resumed>) = 0 [pid 5711] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5710] <... mount resumed>) = 0 [pid 5710] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5711] <... openat resumed>) = 3 [pid 5710] <... openat resumed>) = 3 [pid 5711] chdir("./bus" [pid 5710] chdir("./bus" [pid 5711] <... chdir resumed>) = 0 [pid 5710] <... chdir resumed>) = 0 [pid 5711] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5710] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5711] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5710] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5710] exit_group(0 [pid 5711] exit_group(0 [pid 5710] <... exit_group resumed>) = ? [pid 5711] <... exit_group resumed>) = ? [pid 5710] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5710, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=23 /* 0.23 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5711] +++ exited with 0 +++ [pid 5637] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5711, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=30 /* 0.30 s */} --- [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5636] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... openat resumed>) = 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] fstat(3 [pid 5637] newfstatat(AT_FDCWD, "./14/binderfs" [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] getdents64(3 [pid 5637] unlink("./14/binderfs" [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... unlink resumed>) = 0 [pid 5636] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./14/binderfs" [pid 5637] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./14/binderfs") = 0 [pid 5636] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5712] <... write resumed>) = 16777216 [pid 5712] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./14/bus" [pid 5712] <... munmap resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = 0 [pid 5712] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4 [pid 5712] <... openat resumed>) = 4 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5712] ioctl(4, LOOP_SET_FD, 3 [pid 5636] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5712] <... ioctl resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] newfstatat(AT_FDCWD, "./14/bus" [pid 5637] getdents64(4 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] close(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5712] close(3) = 0 [pid 5637] <... close resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] rmdir("./14/bus" [pid 5636] <... openat resumed>) = 4 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] fstat(4 [pid 5712] close(4) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5636] getdents64(4 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] close(3 [pid 5636] getdents64(4 [pid 5712] mkdir("./bus", 0777 [pid 5637] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] rmdir("./14" [pid 5713] <... write resumed>) = 16777216 [pid 5712] <... mkdir resumed>) = 0 [pid 5636] close(4 [pid 5713] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./14/bus" [pid 5712] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... rmdir resumed>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] mkdir("./15", 0777 [pid 5636] close(3 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./14") = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] mkdir("./15", 0777 [ 227.884960][ T5712] loop4: detected capacity change from 0 to 32768 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... openat resumed>) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5715 attached ci2-upstream-fs/strace-static-x86_64: Process 5716 attached [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5716 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5715 [pid 5716] set_robust_list(0x55555d1b46e0, 24 [pid 5715] set_robust_list(0x55555d1b46e0, 24 [pid 5713] <... munmap resumed>) = 0 [pid 5712] <... mount resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5716] <... set_robust_list resumed>) = 0 [pid 5715] <... set_robust_list resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5715] rt_sigprocmask(SIG_SETMASK, [] [pid 5713] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5712] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5716] rt_sigprocmask(SIG_SETMASK, [] [pid 5715] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5713] <... openat resumed>) = 4 [pid 5712] <... openat resumed>) = 3 [pid 5716] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5715] chdir("./15" [pid 5716] chdir("./15" [pid 5715] <... chdir resumed>) = 0 [pid 5713] ioctl(4, LOOP_SET_FD, 3 [pid 5712] chdir("./bus" [pid 5714] <... write resumed>) = 16777216 [pid 5713] <... ioctl resumed>) = 0 [pid 5716] <... chdir resumed>) = 0 [pid 5715] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5714] munmap(0x7fb9643a6000, 138412032 [pid 5713] close(3 [pid 5712] <... chdir resumed>) = 0 [pid 5716] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5715] <... prctl resumed>) = 0 [pid 5713] <... close resumed>) = 0 [pid 5712] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5716] <... prctl resumed>) = 0 [pid 5715] setpgid(0, 0 [pid 5713] close(4 [pid 5712] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5716] setpgid(0, 0 [pid 5715] <... setpgid resumed>) = 0 [pid 5713] <... close resumed>) = 0 [pid 5716] <... setpgid resumed>) = 0 [pid 5712] exit_group(0 [pid 5716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5713] mkdir("./bus", 0777 [pid 5712] <... exit_group resumed>) = ? [pid 5716] <... openat resumed>) = 3 [pid 5713] <... mkdir resumed>) = 0 [pid 5716] write(3, "1000", 4 [pid 5715] <... openat resumed>) = 3 [pid 5716] <... write resumed>) = 4 [pid 5716] close(3) = 0 [pid 5713] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5716] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5715] write(3, "1000", 4 [pid 5716] write(1, "executing program\n", 18 [pid 5715] <... write resumed>) = 4 [pid 5712] +++ exited with 0 +++ [pid 5715] close(3) = 0 [pid 5715] symlink("/dev/binderfs", "./binderfs" [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5712, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=37 /* 0.37 s */} --- executing program [pid 5716] <... write resumed>) = 18 [pid 5715] <... symlink resumed>) = 0 [pid 5714] <... munmap resumed>) = 0 [pid 5716] memfd_create("syzkaller", 0 [pid 5715] write(1, "executing program\n", 18 [pid 5714] openat(AT_FDCWD, "/dev/loop0", O_RDWR executing program [pid 5640] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5716] <... memfd_create resumed>) = 3 [pid 5715] <... write resumed>) = 18 [pid 5714] <... openat resumed>) = 4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 228.003725][ T5713] loop3: detected capacity change from 0 to 32768 [pid 5716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5714] ioctl(4, LOOP_SET_FD, 3 [pid 5716] <... mmap resumed>) = 0x7fb9643a6000 [pid 5715] memfd_create("syzkaller", 0 [pid 5714] <... ioctl resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5715] <... memfd_create resumed>) = 3 [pid 5640] <... openat resumed>) = 3 [pid 5715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5714] close(3 [pid 5640] fstat(3 [pid 5715] <... mmap resumed>) = 0x7fb9643a6000 [pid 5714] <... close resumed>) = 0 [pid 5713] <... mount resumed>) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5714] close(4) = 0 [pid 5713] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5714] mkdir("./bus", 0777 [pid 5713] <... openat resumed>) = 3 [pid 5714] <... mkdir resumed>) = 0 [pid 5640] getdents64(3 [pid 5713] chdir("./bus" [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5713] <... chdir resumed>) = 0 [pid 5713] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5713] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5714] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] newfstatat(AT_FDCWD, "./13/binderfs" [pid 5713] exit_group(0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 228.069838][ T5714] loop0: detected capacity change from 0 to 32768 [pid 5640] unlink("./13/binderfs" [pid 5713] <... exit_group resumed>) = ? [pid 5640] <... unlink resumed>) = 0 [pid 5640] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5713] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5713, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5638] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./14/binderfs" [pid 5714] <... mount resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./14/binderfs") = 0 [pid 5714] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5714] <... openat resumed>) = 3 [pid 5714] chdir("./bus") = 0 [pid 5714] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5714] exit_group(0) = ? [pid 5714] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5714, si_uid=0, si_status=0, si_utime=0, si_stime=29 /* 0.29 s */} --- [pid 5634] umount2("./13", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./13/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./13/binderfs") = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5634] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = 0 [pid 5640] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] newfstatat(AT_FDCWD, "./13/bus" [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./14/bus" [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4 [pid 5638] fstat(4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4 [pid 5640] getdents64(4 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5640] close(4) = 0 [pid 5638] rmdir("./14/bus" [pid 5640] rmdir("./13/bus" [pid 5638] <... rmdir resumed>) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5640] getdents64(3 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5640] close(3 [pid 5638] rmdir("./14" [pid 5640] <... close resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5640] rmdir("./13") = 0 [pid 5638] mkdir("./15", 0777 [pid 5640] mkdir("./14", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5634] <... umount2 resumed>) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... ioctl resumed>) = 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] close(3 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] newfstatat(AT_FDCWD, "./13/bus" [pid 5638] close(3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] umount2("./13/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./13/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 ci2-upstream-fs/strace-static-x86_64: Process 5717 attached [pid 5634] fstat(4 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5717 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5717] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5717] <... set_robust_list resumed>) = 0 [pid 5717] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] getdents64(4 [pid 5717] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5717] chdir("./15" [pid 5634] getdents64(4 [pid 5717] <... chdir resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5717] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] close(4 [pid 5717] <... prctl resumed>) = 0 [pid 5717] setpgid(0, 0 [pid 5634] <... close resumed>) = 0 [pid 5717] <... setpgid resumed>) = 0 [pid 5717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] rmdir("./13/bus") = 0 [pid 5717] <... openat resumed>) = 3 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5717] write(3, "1000", 4 [pid 5634] close(3 [pid 5717] <... write resumed>) = 4 [pid 5634] <... close resumed>) = 0 [pid 5717] close(3) = 0 [pid 5634] rmdir("./13" [pid 5717] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5717] write(1, "executing program\n", 18) = 18 executing program [pid 5717] memfd_create("syzkaller", 0) = 3 [pid 5717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] mkdir("./14", 0777) = 0 [pid 5716] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5718 attached [pid 5718] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5718 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5718] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5718] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5718] chdir("./14") = 0 [pid 5718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5718] setpgid(0, 0) = 0 [pid 5718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5718] write(3, "1000", 4) = 4 [pid 5718] close(3) = 0 [pid 5718] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5718] write(1, "executing program\n", 18) = 18 executing program [pid 5718] memfd_create("syzkaller", 0) = 3 [pid 5718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5718] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5719 attached , child_tidptr=0x55555d1b46d0) = 5719 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5719] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5719] <... set_robust_list resumed>) = 0 [pid 5719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5719] chdir("./14") = 0 [pid 5719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5719] setpgid(0, 0) = 0 [pid 5719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5719] write(3, "1000", 4) = 4 [pid 5719] close(3) = 0 [pid 5719] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5719] write(1, "executing program\n", 18) = 18 executing program [pid 5719] memfd_create("syzkaller", 0) = 3 [pid 5719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5715] <... write resumed>) = 16777216 [pid 5715] munmap(0x7fb9643a6000, 138412032 [pid 5716] <... write resumed>) = 16777216 [pid 5716] munmap(0x7fb9643a6000, 138412032 [pid 5719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5716] <... munmap resumed>) = 0 [pid 5715] <... munmap resumed>) = 0 [pid 5716] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5715] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5716] <... openat resumed>) = 4 [pid 5715] <... openat resumed>) = 4 [pid 5716] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5715] ioctl(4, LOOP_SET_FD, 3 [pid 5716] close(3) = 0 [pid 5715] <... ioctl resumed>) = 0 [pid 5716] close(4 [pid 5715] close(3 [pid 5716] <... close resumed>) = 0 [pid 5715] <... close resumed>) = 0 [pid 5715] close(4 [pid 5716] mkdir("./bus", 0777 [pid 5715] <... close resumed>) = 0 [pid 5716] <... mkdir resumed>) = 0 [pid 5715] mkdir("./bus", 0777) = 0 [pid 5716] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5715] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5715] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5715] chdir("./bus") = 0 [pid 5715] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5715] exit_group(0) = ? [pid 5716] <... mount resumed>) = 0 [pid 5715] +++ exited with 0 +++ [pid 5716] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5715, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} --- [pid 5716] <... openat resumed>) = 3 [pid 5716] chdir("./bus" [pid 5636] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5716] <... chdir resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5716] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5716] exit_group(0 [pid 5636] <... openat resumed>) = 3 [pid 5716] <... exit_group resumed>) = ? [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5716] +++ exited with 0 +++ [pid 5636] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5716, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=32 /* 0.32 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... restart_syscall resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./15/binderfs" [pid 5637] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] <... unlink resumed>) = 0 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./15/binderfs") = 0 [pid 5637] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... umount2 resumed>) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5636] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] getdents64(4 [pid 5636] newfstatat(AT_FDCWD, "./15/bus" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] close(4) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] rmdir("./15/bus") = 0 [pid 5636] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] fstat(4 [pid 5637] close(3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... close resumed>) = 0 [pid 5636] getdents64(4 [pid 5717] <... write resumed>) = 16777216 [pid 5637] rmdir("./15" [pid 5717] munmap(0x7fb9643a6000, 138412032 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] getdents64(4 [pid 5637] mkdir("./16", 0777 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5718] <... write resumed>) = 16777216 [pid 5637] <... mkdir resumed>) = 0 [pid 5636] close(4 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5718] munmap(0x7fb9643a6000, 138412032 [pid 5636] <... close resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5636] rmdir("./15/bus" [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] <... rmdir resumed>) = 0 [pid 5717] <... munmap resumed>) = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5717] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] close(3 [pid 5717] <... openat resumed>) = 4 [pid 5637] <... close resumed>) = 0 [pid 5636] getdents64(3 [pid 5718] <... munmap resumed>) = 0 [pid 5717] ioctl(4, LOOP_SET_FD, 3 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5718] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3 [pid 5718] <... openat resumed>) = 4 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... close resumed>) = 0 [pid 5718] ioctl(4, LOOP_SET_FD, 3 [pid 5636] rmdir("./15"ci2-upstream-fs/strace-static-x86_64: Process 5720 attached [pid 5718] <... ioctl resumed>) = 0 [pid 5717] <... ioctl resumed>) = 0 [pid 5720] set_robust_list(0x55555d1b46e0, 24 [pid 5718] close(3 [pid 5717] close(3 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5720 [pid 5717] <... close resumed>) = 0 [pid 5720] <... set_robust_list resumed>) = 0 [pid 5718] <... close resumed>) = 0 [pid 5717] close(4 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5720] rt_sigprocmask(SIG_SETMASK, [] [pid 5718] close(4 [pid 5717] <... close resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5720] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5718] <... close resumed>) = 0 [pid 5717] mkdir("./bus", 0777 [pid 5720] chdir("./16" [pid 5718] mkdir("./bus", 0777 [pid 5717] <... mkdir resumed>) = 0 [pid 5720] <... chdir resumed>) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5720] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5718] <... mkdir resumed>) = 0 [pid 5717] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5720] <... prctl resumed>) = 0 [pid 5720] setpgid(0, 0 [pid 5636] mkdir("./16", 0777 [pid 5720] <... setpgid resumed>) = 0 [pid 5718] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... mkdir resumed>) = 0 [pid 5720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5720] write(3, "1000", 4) = 4 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5720] close(3 [pid 5636] <... openat resumed>) = 3 [pid 5720] <... close resumed>) = 0 [pid 5720] symlink("/dev/binderfs", "./binderfs" [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5720] <... symlink resumed>) = 0 [pid 5636] close(3 executing program [pid 5720] write(1, "executing program\n", 18) = 18 [pid 5717] <... mount resumed>) = 0 [pid 5720] memfd_create("syzkaller", 0 [pid 5717] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5720] <... memfd_create resumed>) = 3 [pid 5718] <... mount resumed>) = 0 [pid 5717] <... openat resumed>) = 3 [pid 5720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5718] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5717] chdir("./bus" [pid 5720] <... mmap resumed>) = 0x7fb9643a6000 [pid 5718] <... openat resumed>) = 3 [pid 5717] <... chdir resumed>) = 0 [pid 5718] chdir("./bus" [pid 5717] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5718] <... chdir resumed>) = 0 [pid 5717] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5718] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5717] exit_group(0 [pid 5718] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5718] exit_group(0 [pid 5717] <... exit_group resumed>) = ? [pid 5718] <... exit_group resumed>) = ? [pid 5717] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5717, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- [pid 5718] +++ exited with 0 +++ [pid 5638] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5718, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5634] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... openat resumed>) = 3 [pid 5638] fstat(3 [pid 5634] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5638] getdents64(3 [pid 5634] fstat(3 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./15/binderfs" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] unlink("./15/binderfs") = 0 [pid 5634] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./14/binderfs") = 0 [pid 5634] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] <... umount2 resumed>) = 0 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4 [pid 5634] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./14/bus" [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] close(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... close resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] rmdir("./15/bus" [pid 5634] <... openat resumed>) = 4 [pid 5638] <... rmdir resumed>) = 0 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5638] getdents64(3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] getdents64(4 [pid 5638] close(3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] close(4 [pid 5638] rmdir("./15" [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./14/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./14") = 0 [pid 5634] mkdir("./15", 0777 [pid 5638] <... rmdir resumed>) = 0 [pid 5638] mkdir("./16", 0777 [pid 5634] <... mkdir resumed>) = 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5634] <... openat resumed>) = 3 [pid 5638] <... ioctl resumed>) = 0 [pid 5638] close(3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5721 ci2-upstream-fs/strace-static-x86_64: Process 5722 attached ci2-upstream-fs/strace-static-x86_64: Process 5721 attached [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5722] set_robust_list(0x55555d1b46e0, 24 [pid 5721] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5722 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5722] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5722] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5722] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5721] <... set_robust_list resumed>) = 0 [pid 5721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5722] chdir("./16" [pid 5721] chdir("./15" [pid 5722] <... chdir resumed>) = 0 [pid 5721] <... chdir resumed>) = 0 [pid 5721] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5722] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5721] <... prctl resumed>) = 0 [pid 5721] setpgid(0, 0 [pid 5722] <... prctl resumed>) = 0 [pid 5722] setpgid(0, 0) = 0 [pid 5721] <... setpgid resumed>) = 0 [pid 5722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5722] <... openat resumed>) = 3 [pid 5721] <... openat resumed>) = 3 [pid 5721] write(3, "1000", 4 [pid 5722] write(3, "1000", 4 [pid 5721] <... write resumed>) = 4 [pid 5721] close(3) = 0 [pid 5721] symlink("/dev/binderfs", "./binderfs" [pid 5722] <... write resumed>) = 4 [pid 5721] <... symlink resumed>) = 0 [pid 5722] close(3 [pid 5721] write(1, "executing program\n", 18 [pid 5722] <... close resumed>) = 0 [pid 5722] symlink("/dev/binderfs", "./binderfs" [pid 5721] <... write resumed>) = 18 executing program [pid 5722] <... symlink resumed>) = 0 [pid 5721] memfd_create("syzkaller", 0) = 3 [pid 5722] write(1, "executing program\n", 18 executing program [pid 5721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5722] <... write resumed>) = 18 [pid 5721] <... mmap resumed>) = 0x7fb9643a6000 [pid 5722] memfd_create("syzkaller", 0) = 3 [pid 5722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5720] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5719] <... write resumed>) = 16777216 [pid 5719] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5719] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5719] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5719] close(3) = 0 [pid 5719] close(4) = 0 [pid 5636] <... close resumed>) = 0 [pid 5719] mkdir("./bus", 0777) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5719] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5723 attached , child_tidptr=0x55555d1b46d0) = 5723 [pid 5723] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5723] <... set_robust_list resumed>) = 0 [pid 5723] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5723] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5723] chdir("./16" [pid 5719] <... mount resumed>) = 0 [pid 5719] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5723] <... chdir resumed>) = 0 [pid 5723] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5719] <... openat resumed>) = 3 [pid 5723] <... prctl resumed>) = 0 [pid 5719] chdir("./bus" [pid 5723] setpgid(0, 0 [pid 5719] <... chdir resumed>) = 0 [pid 5723] <... setpgid resumed>) = 0 [pid 5719] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5719] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5723] <... openat resumed>) = 3 [pid 5719] exit_group(0 [pid 5723] write(3, "1000", 4 [pid 5719] <... exit_group resumed>) = ? [pid 5723] <... write resumed>) = 4 [pid 5719] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5719, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=32 /* 0.32 s */} --- [pid 5723] close(3) = 0 [pid 5640] umount2("./14", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5723] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5723] <... symlink resumed>) = 0 [pid 5721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5723] write(1, "executing program\n", 18 [pid 5640] <... openat resumed>) = 3 [pid 5723] <... write resumed>) = 18 executing program [pid 5640] fstat(3 [pid 5723] memfd_create("syzkaller", 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./14/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5723] <... memfd_create resumed>) = 3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] newfstatat(AT_FDCWD, "./14/binderfs" [pid 5723] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./14/binderfs") = 0 [pid 5640] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5722] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./14/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./14/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./14/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./14/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./14") = 0 [pid 5640] mkdir("./15", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5724 attached [pid 5724] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5724 [pid 5724] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5724] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5724] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5724] chdir("./15") = 0 [pid 5724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5724] setpgid(0, 0) = 0 [pid 5724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5724] write(3, "1000", 4) = 4 [pid 5724] close(3) = 0 [pid 5724] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5724] write(1, "executing program\n", 18) = 18 executing program [pid 5724] memfd_create("syzkaller", 0) = 3 [pid 5724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5724] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5720] <... write resumed>) = 16777216 [pid 5720] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5720] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5720] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5720] close(3) = 0 [pid 5720] close(4) = 0 [pid 5720] mkdir("./bus", 0777) = 0 [ 231.343839][ T5720] set_capacity_and_notify: 5 callbacks suppressed [ 231.343862][ T5720] loop2: detected capacity change from 0 to 32768 [pid 5720] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5720] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5720] chdir("./bus") = 0 [pid 5720] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5720] exit_group(0) = ? [pid 5720] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5720, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./16/binderfs") = 0 [pid 5637] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5722] <... write resumed>) = 16777216 [pid 5637] <... umount2 resumed>) = 0 [pid 5722] munmap(0x7fb9643a6000, 138412032 [pid 5637] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5721] <... write resumed>) = 16777216 [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./16/bus" [pid 5722] <... munmap resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5721] munmap(0x7fb9643a6000, 138412032 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5722] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5637] close(3) = 0 [pid 5722] ioctl(4, LOOP_SET_FD, 3 [pid 5637] rmdir("./16" [pid 5722] <... ioctl resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5722] close(3) = 0 [pid 5637] mkdir("./17", 0777 [pid 5722] close(4 [pid 5637] <... mkdir resumed>) = 0 [pid 5722] <... close resumed>) = 0 [pid 5722] mkdir("./bus", 0777 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5722] <... mkdir resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3 [pid 5721] <... munmap resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5721] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5722] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5721] <... openat resumed>) = 4 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5721] ioctl(4, LOOP_SET_FD, 3) = 0 [ 231.627154][ T5722] loop3: detected capacity change from 0 to 32768 [pid 5721] close(3ci2-upstream-fs/strace-static-x86_64: Process 5725 attached ) = 0 [pid 5725] set_robust_list(0x55555d1b46e0, 24 [pid 5721] close(4 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5725 [pid 5725] <... set_robust_list resumed>) = 0 [pid 5721] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5725] rt_sigprocmask(SIG_SETMASK, [] [pid 5721] mkdir("./bus", 0777 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5721] <... mkdir resumed>) = 0 [pid 5725] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5725] chdir("./17" [pid 5721] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5725] <... chdir resumed>) = 0 [pid 5725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5725] setpgid(0, 0) = 0 [pid 5725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5722] <... mount resumed>) = 0 [pid 5725] write(3, "1000", 4 [pid 5722] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5725] <... write resumed>) = 4 [pid 5722] <... openat resumed>) = 3 [pid 5725] close(3) = 0 [pid 5722] chdir("./bus" [pid 5725] symlink("/dev/binderfs", "./binderfs" [pid 5722] <... chdir resumed>) = 0 [pid 5722] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5725] <... symlink resumed>) = 0 [pid 5722] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5722] exit_group(0) = ? executing program [pid 5725] write(1, "executing program\n", 18) = 18 [pid 5725] memfd_create("syzkaller", 0) = 3 [ 231.677915][ T5721] loop0: detected capacity change from 0 to 32768 [pid 5725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5722] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5722, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=31 /* 0.31 s */} --- [pid 5638] umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5721] <... mount resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5721] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] fstat(3 [pid 5721] <... openat resumed>) = 3 [pid 5721] chdir("./bus") = 0 [pid 5721] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5721] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5721] exit_group(0 [pid 5638] umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5721] <... exit_group resumed>) = ? [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./16/binderfs") = 0 [pid 5638] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5721] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5721, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5723] <... write resumed>) = 16777216 [pid 5634] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5723] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./15/binderfs") = 0 [pid 5634] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5723] <... munmap resumed>) = 0 [pid 5723] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5723] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5723] close(3) = 0 [pid 5723] close(4) = 0 [pid 5723] mkdir("./bus", 0777) = 0 [pid 5723] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 231.856955][ T5723] loop1: detected capacity change from 0 to 32768 [pid 5638] getdents64(4 [pid 5634] <... umount2 resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4 [pid 5723] <... mount resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./16/bus" [pid 5634] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... rmdir resumed>) = 0 [pid 5723] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5723] <... openat resumed>) = 3 [pid 5634] newfstatat(AT_FDCWD, "./15/bus" [pid 5723] chdir("./bus" [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5723] <... chdir resumed>) = 0 [pid 5723] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5723] exit_group(0 [pid 5638] getdents64(3 [pid 5634] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5723] <... exit_group resumed>) = ? [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] close(3) = 0 [pid 5634] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] rmdir("./16" [pid 5634] <... openat resumed>) = 4 [pid 5638] <... rmdir resumed>) = 0 [pid 5634] fstat(4 [pid 5723] +++ exited with 0 +++ [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] mkdir("./17", 0777 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5723, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=40 /* 0.40 s */} --- [pid 5634] getdents64(4 [pid 5638] <... mkdir resumed>) = 0 [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] close(4 [pid 5638] <... openat resumed>) = 3 [pid 5636] umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... close resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] rmdir("./15/bus" [pid 5638] <... ioctl resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3 [pid 5638] close(3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] getdents64(3 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] unlink("./16/binderfs" [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] close(3 [pid 5636] <... unlink resumed>) = 0 [pid 5636] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./15") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5726 attached [pid 5634] mkdir("./16", 0777 [pid 5726] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... mkdir resumed>) = 0 [pid 5726] <... set_robust_list resumed>) = 0 [pid 5726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5726 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5726] chdir("./17" [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... openat resumed>) = 3 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5726] <... chdir resumed>) = 0 [pid 5726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5726] setpgid(0, 0 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5726] <... setpgid resumed>) = 0 [pid 5634] close(3) = 0 [pid 5726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5726] <... openat resumed>) = 3 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5726] write(3, "1000", 4) = 4 [pid 5726] close(3) = 0 [pid 5726] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5726] write(1, "executing program\n", 18ci2-upstream-fs/strace-static-x86_64: Process 5727 attached [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5727 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 executing program [pid 5726] <... write resumed>) = 18 [pid 5727] set_robust_list(0x55555d1b46e0, 24 [pid 5726] memfd_create("syzkaller", 0 [pid 5727] <... set_robust_list resumed>) = 0 [pid 5727] rt_sigprocmask(SIG_SETMASK, [] [pid 5726] <... memfd_create resumed>) = 3 [pid 5726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5727] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5727] chdir("./16") = 0 [pid 5727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5727] setpgid(0, 0) = 0 [pid 5727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5727] write(3, "1000", 4 [pid 5636] <... umount2 resumed>) = 0 [pid 5727] <... write resumed>) = 4 [pid 5727] close(3) = 0 [pid 5636] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5727] symlink("/dev/binderfs", "./binderfs" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5727] <... symlink resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5727] write(1, "executing program\n", 18 [pid 5636] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) executing program [pid 5727] <... write resumed>) = 18 [pid 5636] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5727] memfd_create("syzkaller", 0 [pid 5636] fstat(4 [pid 5727] <... memfd_create resumed>) = 3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./16/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./16") = 0 [pid 5636] mkdir("./17", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5728 attached , child_tidptr=0x55555d1b46d0) = 5728 [pid 5728] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5728] <... set_robust_list resumed>) = 0 [pid 5728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5728] chdir("./17") = 0 [pid 5728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5728] setpgid(0, 0) = 0 [pid 5728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5728] write(3, "1000", 4) = 4 [pid 5728] close(3) = 0 [pid 5728] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5728] write(1, "executing program\n", 18) = 18 executing program [pid 5728] memfd_create("syzkaller", 0) = 3 [pid 5728] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5725] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5724] <... write resumed>) = 16777216 [pid 5724] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5724] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5724] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5724] close(3) = 0 [pid 5724] close(4) = 0 [pid 5724] mkdir("./bus", 0777) = 0 [pid 5724] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [ 232.492648][ T5724] loop4: detected capacity change from 0 to 32768 [pid 5726] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5724] <... mount resumed>) = 0 [pid 5724] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5724] chdir("./bus") = 0 [pid 5724] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5724] exit_group(0) = ? [pid 5724] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5724, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=30 /* 0.30 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./15", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./15/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5727] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] unlink("./15/binderfs") = 0 [pid 5640] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5640] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./15/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./15/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./15/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./15/bus" [pid 5728] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... rmdir resumed>) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./15") = 0 [pid 5640] mkdir("./16", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5729 attached [pid 5729] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5729 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5729] <... set_robust_list resumed>) = 0 [pid 5729] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5729] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5729] chdir("./16") = 0 [pid 5729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5729] setpgid(0, 0) = 0 [pid 5729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5729] write(3, "1000", 4) = 4 [pid 5729] close(3) = 0 [pid 5729] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5729] write(1, "executing program\n", 18) = 18 [pid 5729] memfd_create("syzkaller", 0) = 3 [pid 5729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5725] <... write resumed>) = 16777216 [pid 5725] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5725] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5726] <... write resumed>) = 16777216 [pid 5725] <... openat resumed>) = 4 [pid 5725] ioctl(4, LOOP_SET_FD, 3 [pid 5726] munmap(0x7fb9643a6000, 138412032 [pid 5725] <... ioctl resumed>) = 0 [pid 5725] close(3) = 0 [pid 5725] close(4) = 0 [pid 5725] mkdir("./bus", 0777 [pid 5726] <... munmap resumed>) = 0 [pid 5725] <... mkdir resumed>) = 0 [pid 5726] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5726] ioctl(4, LOOP_SET_FD, 3 [pid 5725] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5726] <... ioctl resumed>) = 0 [pid 5726] close(3) = 0 [ 233.432853][ T5725] loop2: detected capacity change from 0 to 32768 [pid 5726] close(4) = 0 [pid 5726] mkdir("./bus", 0777) = 0 [pid 5726] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5725] <... mount resumed>) = 0 [pid 5725] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [ 233.481560][ T5726] loop3: detected capacity change from 0 to 32768 [pid 5725] chdir("./bus") = 0 [pid 5725] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5726] <... mount resumed>) = 0 [pid 5725] exit_group(0 [pid 5726] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5725] <... exit_group resumed>) = ? [pid 5726] <... openat resumed>) = 3 [pid 5726] chdir("./bus") = 0 [pid 5726] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5725] +++ exited with 0 +++ [pid 5726] exit_group(0 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5725, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5726] <... exit_group resumed>) = ? [pid 5637] umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5726] +++ exited with 0 +++ [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5726, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=35 /* 0.35 s */} --- [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] unlink("./17/binderfs" [pid 5638] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... unlink resumed>) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./17/binderfs") = 0 [pid 5638] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] <... umount2 resumed>) = 0 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(4 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] getdents64(4 [pid 5638] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] close(4 [pid 5727] <... write resumed>) = 16777216 [pid 5638] <... openat resumed>) = 4 [pid 5727] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... close resumed>) = 0 [pid 5638] fstat(4 [pid 5637] rmdir("./17/bus" [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5638] getdents64(4 [pid 5637] getdents64(3 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5638] getdents64(4 [pid 5637] rmdir("./17" [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5638] close(4 [pid 5637] mkdir("./18", 0777 [pid 5638] <... close resumed>) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5638] rmdir("./17/bus") = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5638] getdents64(3 [pid 5637] <... ioctl resumed>) = 0 [pid 5637] close(3) = 0 [pid 5727] <... munmap resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] close(3 [pid 5727] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] <... close resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5727] <... openat resumed>) = 4 [pid 5638] rmdir("./17" [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5727] ioctl(4, LOOP_SET_FD, 3 [pid 5638] <... rmdir resumed>) = 0 [pid 5727] <... ioctl resumed>) = 0 [pid 5638] mkdir("./18", 0777 [pid 5727] close(3) = 0 [pid 5727] close(4) = 0 [pid 5727] mkdir("./bus", 0777) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5730 attached [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5730 [pid 5730] set_robust_list(0x55555d1b46e0, 24 [pid 5727] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5730] <... set_robust_list resumed>) = 0 [pid 5730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5730] chdir("./18" [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5730] <... chdir resumed>) = 0 [pid 5730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5730] setpgid(0, 0) = 0 [pid 5730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5730] write(3, "1000", 4 [pid 5638] <... mkdir resumed>) = 0 [pid 5730] <... write resumed>) = 4 [pid 5730] close(3) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5730] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... openat resumed>) = 3 [ 233.771769][ T5727] loop0: detected capacity change from 0 to 32768 [pid 5730] <... symlink resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5730] write(1, "executing program\n", 18 executing program [pid 5638] close(3) = 0 [pid 5730] <... write resumed>) = 18 [pid 5730] memfd_create("syzkaller", 0 [pid 5729] <... write resumed>) = 16777216 [pid 5729] munmap(0x7fb9643a6000, 138412032 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5730] <... memfd_create resumed>) = 3 [pid 5730] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5730] <... mmap resumed>) = 0x7fb9643a6000 ci2-upstream-fs/strace-static-x86_64: Process 5731 attached [pid 5731] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5731 [pid 5731] <... set_robust_list resumed>) = 0 [pid 5731] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5731] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5731] chdir("./18") = 0 [pid 5729] <... munmap resumed>) = 0 [pid 5731] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5729] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5731] <... prctl resumed>) = 0 [pid 5731] setpgid(0, 0) = 0 [pid 5731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5729] <... openat resumed>) = 4 [pid 5727] <... mount resumed>) = 0 [pid 5731] <... openat resumed>) = 3 [pid 5729] ioctl(4, LOOP_SET_FD, 3 [pid 5727] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5731] write(3, "1000", 4 [pid 5729] <... ioctl resumed>) = 0 [pid 5727] <... openat resumed>) = 3 [pid 5731] <... write resumed>) = 4 [pid 5728] <... write resumed>) = 16777216 [pid 5727] chdir("./bus" [pid 5731] close(3 [pid 5729] close(3 [pid 5731] <... close resumed>) = 0 [pid 5729] <... close resumed>) = 0 [pid 5727] <... chdir resumed>) = 0 [pid 5731] symlink("/dev/binderfs", "./binderfs" [pid 5729] close(4 [pid 5728] munmap(0x7fb9643a6000, 138412032 [pid 5727] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5731] <... symlink resumed>) = 0 [pid 5731] write(1, "executing program\n", 18 [pid 5729] <... close resumed>) = 0 executing program [pid 5731] <... write resumed>) = 18 [pid 5729] mkdir("./bus", 0777 [pid 5727] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5731] memfd_create("syzkaller", 0 [pid 5729] <... mkdir resumed>) = 0 [pid 5727] exit_group(0 [pid 5731] <... memfd_create resumed>) = 3 [pid 5729] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5727] <... exit_group resumed>) = ? [pid 5731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5727] +++ exited with 0 +++ [ 233.909227][ T5729] loop4: detected capacity change from 0 to 32768 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5727, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5728] <... munmap resumed>) = 0 [pid 5728] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] fstat(3 [pid 5728] <... openat resumed>) = 4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5728] ioctl(4, LOOP_SET_FD, 3 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./16/binderfs") = 0 [pid 5634] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5729] <... mount resumed>) = 0 [pid 5728] <... ioctl resumed>) = 0 [pid 5729] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5728] close(3) = 0 [pid 5729] <... openat resumed>) = 3 [pid 5728] close(4 [pid 5729] chdir("./bus" [pid 5728] <... close resumed>) = 0 [pid 5729] <... chdir resumed>) = 0 [pid 5729] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5728] mkdir("./bus", 0777 [pid 5729] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5728] <... mkdir resumed>) = 0 [pid 5728] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5729] exit_group(0) = ? [pid 5729] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5729, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=29 /* 0.29 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 234.004120][ T5728] loop1: detected capacity change from 0 to 32768 [pid 5640] umount2("./16", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... openat resumed>) = 3 [pid 5634] newfstatat(AT_FDCWD, "./16/bus" [pid 5640] fstat(3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(3 [pid 5634] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] <... openat resumed>) = 4 [pid 5640] umount2("./16/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] fstat(4 [pid 5640] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5640] unlink("./16/binderfs" [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... unlink resumed>) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5640] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./16/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./16") = 0 [pid 5634] mkdir("./17", 0777) = 0 [pid 5728] <... mount resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5728] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] <... ioctl resumed>) = 0 [pid 5634] close(3 [pid 5728] <... openat resumed>) = 3 [pid 5728] chdir("./bus" [pid 5634] <... close resumed>) = 0 [pid 5728] <... chdir resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5728] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5728] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5728] exit_group(0) = ? ci2-upstream-fs/strace-static-x86_64: Process 5732 attached [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5732 [pid 5732] set_robust_list(0x55555d1b46e0, 24 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5732] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5732] rt_sigprocmask(SIG_SETMASK, [] [pid 5728] +++ exited with 0 +++ [pid 5732] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5728, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=30 /* 0.30 s */} --- [pid 5732] chdir("./17") = 0 [pid 5732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5732] setpgid(0, 0) = 0 [pid 5732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5732] write(3, "1000", 4) = 4 [pid 5732] close(3) = 0 [pid 5732] symlink("/dev/binderfs", "./binderfs" [pid 5636] umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5732] <... symlink resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY executing program [pid 5732] write(1, "executing program\n", 18) = 18 [pid 5636] <... openat resumed>) = 3 [pid 5732] memfd_create("syzkaller", 0 [pid 5636] fstat(3 [pid 5732] <... memfd_create resumed>) = 3 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] getdents64(3 [pid 5732] <... mmap resumed>) = 0x7fb9643a6000 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./17/binderfs") = 0 [pid 5636] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./16/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./16/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./16/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./16/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./16") = 0 [pid 5730] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] mkdir("./17", 0777 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./17/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5636] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... openat resumed>) = 3 [pid 5636] <... openat resumed>) = 4 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] close(3 [pid 5636] getdents64(4 [pid 5640] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] getdents64(4 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] close(4) = 0 [pid 5636] rmdir("./17/bus") = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5733 ci2-upstream-fs/strace-static-x86_64: Process 5733 attached [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] getdents64(3 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5733] set_robust_list(0x55555d1b46e0, 24 [pid 5636] close(3 [pid 5733] <... set_robust_list resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5733] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rmdir("./17" [pid 5733] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5636] mkdir("./18", 0777 [pid 5733] chdir("./17") = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5733] setpgid(0, 0 [pid 5636] <... openat resumed>) = 3 [pid 5733] <... setpgid resumed>) = 0 [pid 5731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3 [pid 5733] <... openat resumed>) = 3 [pid 5636] <... close resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5733] write(3, "1000", 4 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5733] <... write resumed>) = 4 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5733] close(3) = 0 [pid 5733] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5733] write(1, "executing program\n", 18) = 18 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5734 [pid 5733] memfd_create("syzkaller", 0ci2-upstream-fs/strace-static-x86_64: Process 5734 attached [pid 5734] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5733] <... memfd_create resumed>) = 3 [pid 5734] rt_sigprocmask(SIG_SETMASK, [] [pid 5733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5733] <... mmap resumed>) = 0x7fb9643a6000 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5734] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5734] chdir("./18") = 0 [pid 5734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5734] setpgid(0, 0) = 0 [pid 5734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5734] write(3, "1000", 4) = 4 [pid 5734] close(3) = 0 [pid 5734] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5734] write(1, "executing program\n", 18) = 18 executing program [pid 5734] memfd_create("syzkaller", 0) = 3 [pid 5734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5732] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5733] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5734] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5731] <... write resumed>) = 16777216 [pid 5731] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5731] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5731] ioctl(4, LOOP_SET_FD, 3 [pid 5730] <... write resumed>) = 16777216 [pid 5731] <... ioctl resumed>) = 0 [pid 5730] munmap(0x7fb9643a6000, 138412032 [pid 5731] close(3) = 0 [pid 5731] close(4) = 0 [pid 5731] mkdir("./bus", 0777) = 0 [pid 5731] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5730] <... munmap resumed>) = 0 [pid 5730] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5730] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5730] close(3) = 0 [pid 5730] close(4) = 0 [pid 5730] mkdir("./bus", 0777) = 0 [pid 5730] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5731] <... mount resumed>) = 0 [pid 5731] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5731] chdir("./bus") = 0 [pid 5731] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5731] exit_group(0) = ? [pid 5730] <... mount resumed>) = 0 [pid 5730] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5730] chdir("./bus") = 0 [pid 5731] +++ exited with 0 +++ [pid 5730] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5731, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=35 /* 0.35 s */} --- [pid 5730] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5730] exit_group(0) = ? [pid 5638] umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5730] +++ exited with 0 +++ [pid 5638] umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5730, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] unlink("./18/binderfs" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... unlink resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5638] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./18/binderfs") = 0 [pid 5637] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./18/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./18/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./18") = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5638] mkdir("./19", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... openat resumed>) = 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] newfstatat(AT_FDCWD, "./18/bus" [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5733] <... write resumed>) = 16777216 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5735 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5733] munmap(0x7fb9643a6000, 138412032 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5735 attached [pid 5637] close(4) = 0 [pid 5735] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] rmdir("./18/bus" [pid 5735] <... set_robust_list resumed>) = 0 [pid 5735] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5735] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5735] chdir("./19" [pid 5637] <... rmdir resumed>) = 0 [pid 5735] <... chdir resumed>) = 0 [pid 5637] getdents64(3 [pid 5735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5735] setpgid(0, 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5735] <... setpgid resumed>) = 0 [pid 5637] close(3 [pid 5733] <... munmap resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] rmdir("./18" [pid 5733] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... rmdir resumed>) = 0 [pid 5735] <... openat resumed>) = 3 [pid 5733] <... openat resumed>) = 4 [pid 5733] ioctl(4, LOOP_SET_FD, 3 [pid 5735] write(3, "1000", 4 [pid 5637] mkdir("./19", 0777 [pid 5733] <... ioctl resumed>) = 0 [pid 5735] <... write resumed>) = 4 [pid 5637] <... mkdir resumed>) = 0 [pid 5735] close(3) = 0 [pid 5735] symlink("/dev/binderfs", "./binderfs" [pid 5733] close(3) = 0 [pid 5733] close(4 [pid 5735] <... symlink resumed>) = 0 [pid 5733] <... close resumed>) = 0 [pid 5733] mkdir("./bus", 0777 [pid 5735] write(1, "executing program\n", 18 executing program [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5735] <... write resumed>) = 18 [pid 5637] <... openat resumed>) = 3 [pid 5735] memfd_create("syzkaller", 0 [pid 5732] <... write resumed>) = 16777216 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5733] <... mkdir resumed>) = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5735] <... memfd_create resumed>) = 3 [pid 5732] munmap(0x7fb9643a6000, 138412032 [pid 5637] close(3 [pid 5735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5733] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5736 attached , child_tidptr=0x55555d1b46d0) = 5736 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5736] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5736] <... set_robust_list resumed>) = 0 [pid 5736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5736] chdir("./19") = 0 [pid 5736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5732] <... munmap resumed>) = 0 [pid 5736] setpgid(0, 0) = 0 [pid 5736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5732] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5736] <... openat resumed>) = 3 [pid 5733] <... mount resumed>) = 0 [pid 5732] <... openat resumed>) = 4 [pid 5736] write(3, "1000", 4 [pid 5733] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5736] <... write resumed>) = 4 [pid 5733] <... openat resumed>) = 3 [pid 5736] close(3 [pid 5733] chdir("./bus" [pid 5732] ioctl(4, LOOP_SET_FD, 3 [pid 5736] <... close resumed>) = 0 [pid 5736] symlink("/dev/binderfs", "./binderfs" [pid 5732] <... ioctl resumed>) = 0 [pid 5733] <... chdir resumed>) = 0 [pid 5736] <... symlink resumed>) = 0 [pid 5733] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5732] close(3 [pid 5736] write(1, "executing program\n", 18 [pid 5733] exit_group(0 [pid 5732] <... close resumed>) = 0 executing program [pid 5736] <... write resumed>) = 18 [pid 5733] <... exit_group resumed>) = ? [pid 5732] close(4) = 0 [pid 5736] memfd_create("syzkaller", 0 [pid 5733] +++ exited with 0 +++ [pid 5732] mkdir("./bus", 0777 [pid 5736] <... memfd_create resumed>) = 3 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5733, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=32 /* 0.32 s */} --- [pid 5736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5732] <... mkdir resumed>) = 0 [pid 5640] umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5732] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./17/binderfs") = 0 [pid 5640] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5732] <... mount resumed>) = 0 [pid 5732] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5732] chdir("./bus") = 0 [pid 5732] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5732] exit_group(0) = ? [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5732] +++ exited with 0 +++ [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./17/bus" [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5732, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=33 /* 0.33 s */} --- [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5640] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... restart_syscall resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4 [pid 5634] umount2("./17", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5734] <... write resumed>) = 16777216 [pid 5634] <... openat resumed>) = 3 [pid 5734] munmap(0x7fb9643a6000, 138412032 [pid 5634] fstat(3 [pid 5640] getdents64(4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5634] getdents64(3 [pid 5640] rmdir("./17/bus") = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./17/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] getdents64(3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] newfstatat(AT_FDCWD, "./17/binderfs" [pid 5640] close(3) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] rmdir("./17" [pid 5634] unlink("./17/binderfs" [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5640] mkdir("./18", 0777 [pid 5634] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5734] <... munmap resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5734] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5734] <... openat resumed>) = 4 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5734] ioctl(4, LOOP_SET_FD, 3 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5734] <... ioctl resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5737 attached [pid 5734] close(3 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5737 [pid 5734] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5734] close(4 [pid 5737] set_robust_list(0x55555d1b46e0, 24 [pid 5734] <... close resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5737] <... set_robust_list resumed>) = 0 [pid 5734] mkdir("./bus", 0777 [pid 5737] rt_sigprocmask(SIG_SETMASK, [] [pid 5734] <... mkdir resumed>) = 0 [pid 5737] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5737] chdir("./18") = 0 [pid 5734] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5737] setpgid(0, 0) = 0 [pid 5737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5737] write(3, "1000", 4) = 4 [pid 5737] close(3) = 0 [pid 5737] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5737] write(1, "executing program\n", 18) = 18 executing program [pid 5737] memfd_create("syzkaller", 0) = 3 [pid 5737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5634] <... umount2 resumed>) = 0 [pid 5734] <... mount resumed>) = 0 [pid 5734] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5734] chdir("./bus" [pid 5634] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5734] <... chdir resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./17/bus" [pid 5734] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5734] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] umount2("./17/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./17/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5734] exit_group(0 [pid 5634] <... openat resumed>) = 4 [pid 5734] <... exit_group resumed>) = ? [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4 [pid 5734] +++ exited with 0 +++ [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5734, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=22 /* 0.22 s */} --- [pid 5634] <... close resumed>) = 0 [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] rmdir("./17/bus" [pid 5636] <... restart_syscall resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./17") = 0 [pid 5735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] mkdir("./18", 0777 [pid 5636] fstat(3 [pid 5634] <... mkdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... openat resumed>) = 3 [pid 5636] newfstatat(AT_FDCWD, "./18/binderfs" [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5636] unlink("./18/binderfs" [pid 5634] close(3 [pid 5636] <... unlink resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5738 attached , child_tidptr=0x55555d1b46d0) = 5738 [pid 5738] set_robust_list(0x55555d1b46e0, 24 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5738] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5738] chdir("./18") = 0 [pid 5738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5738] setpgid(0, 0) = 0 [pid 5738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5738] write(3, "1000", 4) = 4 [pid 5738] close(3) = 0 [pid 5738] symlink("/dev/binderfs", "./binderfs" [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./18/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5738] <... symlink resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5738] write(1, "executing program\n", 18 [pid 5636] <... openat resumed>) = 4 [pid 5738] <... write resumed>) = 18 executing program [pid 5636] fstat(4 [pid 5738] memfd_create("syzkaller", 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5738] <... memfd_create resumed>) = 3 [pid 5636] getdents64(4 [pid 5738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5738] <... mmap resumed>) = 0x7fb9643a6000 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./18/bus" [pid 5736] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... rmdir resumed>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./18") = 0 [pid 5636] mkdir("./19", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5739 attached , child_tidptr=0x55555d1b46d0) = 5739 [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5739] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5739] chdir("./19") = 0 [pid 5739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5739] setpgid(0, 0) = 0 [pid 5739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5739] write(3, "1000", 4) = 4 [pid 5739] close(3) = 0 [pid 5739] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5739] write(1, "executing program\n", 18) = 18 executing program [pid 5739] memfd_create("syzkaller", 0) = 3 [pid 5739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5737] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5738] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5739] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5735] <... write resumed>) = 16777216 [pid 5735] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5735] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5735] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5735] close(3) = 0 [pid 5735] close(4) = 0 [pid 5735] mkdir("./bus", 0777) = 0 [pid 5735] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5736] <... write resumed>) = 16777216 [ 237.452499][ T5735] set_capacity_and_notify: 5 callbacks suppressed [ 237.452521][ T5735] loop3: detected capacity change from 0 to 32768 [pid 5736] munmap(0x7fb9643a6000, 138412032 [pid 5735] <... mount resumed>) = 0 [pid 5735] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5735] chdir("./bus") = 0 [pid 5735] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5736] <... munmap resumed>) = 0 [pid 5735] exit_group(0) = ? [pid 5736] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5736] ioctl(4, LOOP_SET_FD, 3 [pid 5735] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5735, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=36 /* 0.36 s */} --- [pid 5736] <... ioctl resumed>) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5736] close(3) = 0 [pid 5736] close(4) = 0 [pid 5736] mkdir("./bus", 0777 [pid 5638] umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5736] <... mkdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5736] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./19/binderfs") = 0 [ 237.562496][ T5736] loop2: detected capacity change from 0 to 32768 [pid 5638] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5739] <... write resumed>) = 16777216 [pid 5739] munmap(0x7fb9643a6000, 138412032 [pid 5736] <... mount resumed>) = 0 [pid 5736] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5736] chdir("./bus") = 0 [pid 5736] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5736] exit_group(0) = ? [pid 5739] <... munmap resumed>) = 0 [pid 5739] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5638] <... umount2 resumed>) = 0 [pid 5739] <... openat resumed>) = 4 [pid 5739] ioctl(4, LOOP_SET_FD, 3 [pid 5736] +++ exited with 0 +++ [pid 5638] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5736, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=23 /* 0.23 s */} --- [pid 5739] <... ioctl resumed>) = 0 [pid 5638] newfstatat(AT_FDCWD, "./19/bus" [pid 5637] umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5739] close(3 [pid 5737] <... write resumed>) = 16777216 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5739] <... close resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... openat resumed>) = 3 [pid 5638] <... openat resumed>) = 4 [pid 5637] fstat(3 [pid 5638] fstat(4 [pid 5737] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5739] close(4 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5739] <... close resumed>) = 0 [pid 5638] getdents64(4 [pid 5637] getdents64(3 [pid 5739] mkdir("./bus", 0777 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5739] <... mkdir resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5739] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] getdents64(4 [pid 5637] umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./19/binderfs" [pid 5638] close(4) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] rmdir("./19/bus" [pid 5637] unlink("./19/binderfs" [pid 5638] <... rmdir resumed>) = 0 [pid 5738] <... write resumed>) = 16777216 [pid 5637] <... unlink resumed>) = 0 [pid 5738] munmap(0x7fb9643a6000, 138412032 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5737] <... munmap resumed>) = 0 [pid 5638] close(3 [pid 5737] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5737] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./19" [pid 5737] close(3 [pid 5638] <... rmdir resumed>) = 0 [ 237.692773][ T5739] loop1: detected capacity change from 0 to 32768 [pid 5737] <... close resumed>) = 0 [pid 5737] close(4) = 0 [pid 5737] mkdir("./bus", 0777) = 0 [pid 5739] <... mount resumed>) = 0 [pid 5638] mkdir("./20", 0777 [pid 5739] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5737] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5739] <... openat resumed>) = 3 [pid 5738] <... munmap resumed>) = 0 [pid 5739] chdir("./bus" [pid 5738] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5739] <... chdir resumed>) = 0 [pid 5739] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5738] <... openat resumed>) = 4 [pid 5739] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5738] ioctl(4, LOOP_SET_FD, 3 [pid 5739] exit_group(0) = ? [pid 5738] <... ioctl resumed>) = 0 [pid 5739] +++ exited with 0 +++ [pid 5738] close(3 [pid 5638] <... mkdir resumed>) = 0 [pid 5738] <... close resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5738] close(4 [pid 5638] <... openat resumed>) = 3 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5739, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=26 /* 0.26 s */} --- [pid 5738] <... close resumed>) = 0 [pid 5738] mkdir("./bus", 0777 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5738] <... mkdir resumed>) = 0 [pid 5738] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] <... ioctl resumed>) = 0 [pid 5638] close(3 [pid 5636] umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORYci2-upstream-fs/strace-static-x86_64: Process 5740 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5740 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... openat resumed>) = 3 [pid 5636] fstat(3 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5740] set_robust_list(0x55555d1b46e0, 24 [pid 5636] umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5740] <... set_robust_list resumed>) = 0 [pid 5740] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5740] chdir("./20" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5740] <... chdir resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 237.752947][ T5737] loop4: detected capacity change from 0 to 32768 [ 237.790321][ T5738] loop0: detected capacity change from 0 to 32768 [pid 5740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5636] unlink("./19/binderfs" [pid 5740] setpgid(0, 0) = 0 [pid 5740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] <... umount2 resumed>) = 0 [pid 5737] <... mount resumed>) = 0 [pid 5740] <... openat resumed>) = 3 [pid 5737] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5740] write(3, "1000", 4) = 4 [pid 5737] chdir("./bus") = 0 [pid 5637] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5740] close(3) = 0 [pid 5737] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... unlink resumed>) = 0 [pid 5737] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] newfstatat(AT_FDCWD, "./19/bus" [pid 5740] symlink("/dev/binderfs", "./binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5740] <... symlink resumed>) = 0 [pid 5636] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5740] write(1, "executing program\n", 18 [pid 5738] <... mount resumed>) = 0 [pid 5737] exit_group(0 [pid 5637] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5740] <... write resumed>) = 18 [pid 5740] memfd_create("syzkaller", 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) executing program [pid 5737] <... exit_group resumed>) = ? [pid 5738] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5738] <... openat resumed>) = 3 [pid 5637] <... openat resumed>) = 4 [pid 5740] <... memfd_create resumed>) = 3 [pid 5738] chdir("./bus" [pid 5637] fstat(4 [pid 5740] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5738] <... chdir resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5740] <... mmap resumed>) = 0x7fb9643a6000 [pid 5637] getdents64(4 [pid 5738] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5738] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5737] +++ exited with 0 +++ [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5737, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=26 /* 0.26 s */} --- [pid 5640] umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./19/bus" [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... rmdir resumed>) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5640] fstat(3 [pid 5738] exit_group(0) = ? [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] close(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... close resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./18/binderfs" [pid 5637] rmdir("./19") = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./18/binderfs" [pid 5738] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5738, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=29 /* 0.29 s */} --- [pid 5640] <... unlink resumed>) = 0 [pid 5637] mkdir("./20", 0777) = 0 [pid 5640] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] umount2("./18", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] close(3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... close resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] <... openat resumed>) = 3 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./18/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5741 attached [pid 5634] unlink("./18/binderfs") = 0 [pid 5741] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5741 [pid 5634] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5741] <... set_robust_list resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5741] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5741] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5741] chdir("./20" [pid 5636] newfstatat(AT_FDCWD, "./19/bus" [pid 5741] <... chdir resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5741] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5636] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5741] <... prctl resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5741] setpgid(0, 0 [pid 5636] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5741] <... setpgid resumed>) = 0 [pid 5636] <... openat resumed>) = 4 [pid 5741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5741] write(3, "1000", 4) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5741] close(3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5741] <... close resumed>) = 0 [pid 5741] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5636] getdents64(4 [pid 5741] write(1, "executing program\n", 18 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5741] <... write resumed>) = 18 executing program [pid 5741] memfd_create("syzkaller", 0 [pid 5636] close(4) = 0 [pid 5741] <... memfd_create resumed>) = 3 [pid 5636] rmdir("./19/bus" [pid 5741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5636] <... rmdir resumed>) = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3 [pid 5640] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... close resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] rmdir("./19" [pid 5640] newfstatat(AT_FDCWD, "./18/bus" [pid 5636] <... rmdir resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] mkdir("./20", 0777 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4 [pid 5636] <... openat resumed>) = 3 [pid 5640] <... close resumed>) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5640] rmdir("./18/bus" [pid 5636] <... ioctl resumed>) = 0 [pid 5634] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... rmdir resumed>) = 0 [pid 5636] close(3) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] newfstatat(AT_FDCWD, "./18/bus" [pid 5640] getdents64(3 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] close(3) = 0 [pid 5634] umount2("./18/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] rmdir("./18"ci2-upstream-fs/strace-static-x86_64: Process 5742 attached [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./18/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... rmdir resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5742 [pid 5634] <... openat resumed>) = 4 [pid 5742] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5742] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] fstat(4 [pid 5742] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] mkdir("./19", 0777 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5742] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5742] chdir("./20" [pid 5634] getdents64(4 [pid 5742] <... chdir resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5742] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] getdents64(4 [pid 5742] <... prctl resumed>) = 0 [pid 5742] setpgid(0, 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5634] close(4 [pid 5742] <... setpgid resumed>) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] <... close resumed>) = 0 [pid 5640] <... ioctl resumed>) = 0 [pid 5640] close(3 [pid 5742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] rmdir("./18/bus" [pid 5742] <... openat resumed>) = 3 [pid 5640] <... close resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5742] write(3, "1000", 4 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5742] <... write resumed>) = 4 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5742] close(3) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] getdents64(3 [pid 5742] symlink("/dev/binderfs", "./binderfs" [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5743 attached [pid 5634] close(3 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5743 [pid 5634] <... close resumed>) = 0 [pid 5743] set_robust_list(0x55555d1b46e0, 24 [pid 5742] <... symlink resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] rmdir("./18" [pid 5743] <... set_robust_list resumed>) = 0 [pid 5742] write(1, "executing program\n", 18 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 5634] <... rmdir resumed>) = 0 [pid 5743] rt_sigprocmask(SIG_SETMASK, [] [pid 5742] <... write resumed>) = 18 [pid 5743] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5742] memfd_create("syzkaller", 0 [pid 5743] chdir("./19") = 0 [pid 5742] <... memfd_create resumed>) = 3 [pid 5634] mkdir("./19", 0777 [pid 5743] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] <... mkdir resumed>) = 0 [pid 5743] <... prctl resumed>) = 0 [pid 5742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5743] setpgid(0, 0 [pid 5742] <... mmap resumed>) = 0x7fb9643a6000 [pid 5743] <... setpgid resumed>) = 0 [pid 5743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5743] <... openat resumed>) = 3 [pid 5634] <... openat resumed>) = 3 [pid 5743] write(3, "1000", 4 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5743] <... write resumed>) = 4 [pid 5743] close(3 [pid 5634] <... ioctl resumed>) = 0 [pid 5743] <... close resumed>) = 0 [pid 5743] symlink("/dev/binderfs", "./binderfs" [pid 5634] close(3 [pid 5743] <... symlink resumed>) = 0 [pid 5743] write(1, "executing program\n", 18 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5743] <... write resumed>) = 18 executing program [pid 5743] memfd_create("syzkaller", 0) = 3 [pid 5743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0ci2-upstream-fs/strace-static-x86_64: Process 5744 attached ) = 0x7fb9643a6000 [pid 5744] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5744 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5744] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5744] chdir("./19") = 0 [pid 5744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5744] setpgid(0, 0) = 0 [pid 5744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5744] write(3, "1000", 4) = 4 [pid 5744] close(3) = 0 [pid 5744] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5744] write(1, "executing program\n", 18) = 18 executing program [pid 5744] memfd_create("syzkaller", 0) = 3 [pid 5744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5740] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5741] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5742] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5743] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5744] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5740] <... write resumed>) = 16777216 [pid 5741] <... write resumed>) = 16777216 [pid 5740] munmap(0x7fb9643a6000, 138412032 [pid 5741] munmap(0x7fb9643a6000, 138412032 [pid 5740] <... munmap resumed>) = 0 [pid 5740] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5740] ioctl(4, LOOP_SET_FD, 3 [pid 5741] <... munmap resumed>) = 0 [pid 5741] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5740] <... ioctl resumed>) = 0 [pid 5741] <... openat resumed>) = 4 [pid 5740] close(3 [pid 5741] ioctl(4, LOOP_SET_FD, 3 [pid 5740] <... close resumed>) = 0 [pid 5741] <... ioctl resumed>) = 0 [pid 5740] close(4) = 0 [pid 5741] close(3 [pid 5740] mkdir("./bus", 0777 [pid 5741] <... close resumed>) = 0 [pid 5741] close(4 [pid 5740] <... mkdir resumed>) = 0 [pid 5741] <... close resumed>) = 0 [pid 5740] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5741] mkdir("./bus", 0777) = 0 [pid 5741] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5740] <... mount resumed>) = 0 [ 239.380372][ T5740] loop3: detected capacity change from 0 to 32768 [ 239.394466][ T5741] loop2: detected capacity change from 0 to 32768 [pid 5741] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5740] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5741] <... openat resumed>) = 3 [pid 5740] chdir("./bus" [pid 5741] chdir("./bus" [pid 5740] <... chdir resumed>) = 0 [pid 5741] <... chdir resumed>) = 0 [pid 5740] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5741] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5740] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5741] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5740] exit_group(0 [pid 5741] exit_group(0 [pid 5740] <... exit_group resumed>) = ? [pid 5741] <... exit_group resumed>) = ? [pid 5742] <... write resumed>) = 16777216 [pid 5741] +++ exited with 0 +++ [pid 5740] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5741, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5742] munmap(0x7fb9643a6000, 138412032 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5740, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=25 /* 0.25 s */} --- [pid 5637] <... restart_syscall resumed>) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] fstat(3 [pid 5638] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5637] getdents64(3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5744] <... write resumed>) = 16777216 [pid 5742] <... munmap resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./20/binderfs" [pid 5744] munmap(0x7fb9643a6000, 138412032 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] newfstatat(AT_FDCWD, "./20/binderfs" [pid 5742] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5638] unlink("./20/binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5742] <... openat resumed>) = 4 [pid 5638] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5742] ioctl(4, LOOP_SET_FD, 3 [pid 5637] unlink("./20/binderfs" [pid 5742] <... ioctl resumed>) = 0 [pid 5637] <... unlink resumed>) = 0 [pid 5637] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5742] close(3) = 0 [pid 5742] close(4) = 0 [pid 5742] mkdir("./bus", 0777) = 0 [pid 5744] <... munmap resumed>) = 0 [pid 5742] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5744] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5744] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5744] close(3) = 0 [pid 5744] close(4) = 0 [ 239.560691][ T5742] loop1: detected capacity change from 0 to 32768 [pid 5744] mkdir("./bus", 0777 [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./20/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5742] <... mount resumed>) = 0 [pid 5637] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5742] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... umount2 resumed>) = 0 [pid 5637] fstat(4 [pid 5742] <... openat resumed>) = 3 [pid 5742] chdir("./bus") = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5742] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] getdents64(4 [pid 5744] <... mkdir resumed>) = 0 [pid 5638] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5742] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5744] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5742] exit_group(0 [ 239.601889][ T5744] loop0: detected capacity change from 0 to 32768 [pid 5638] newfstatat(AT_FDCWD, "./20/bus" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5742] <... exit_group resumed>) = ? [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5742] +++ exited with 0 +++ [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] close(4 [pid 5638] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... close resumed>) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5637] rmdir("./20/bus" [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5742, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=25 /* 0.25 s */} --- [pid 5744] <... mount resumed>) = 0 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4 [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5744] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... restart_syscall resumed>) = 0 [pid 5743] <... write resumed>) = 16777216 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] <... rmdir resumed>) = 0 [pid 5744] <... openat resumed>) = 3 [pid 5638] getdents64(4 [pid 5744] chdir("./bus" [pid 5743] munmap(0x7fb9643a6000, 138412032 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] getdents64(3 [pid 5744] <... chdir resumed>) = 0 [pid 5638] close(4 [pid 5744] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] <... close resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5744] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] rmdir("./20/bus" [pid 5637] close(3 [pid 5636] umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5744] exit_group(0 [pid 5743] <... munmap resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5744] <... exit_group resumed>) = ? [pid 5743] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] getdents64(3 [pid 5637] <... close resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5743] <... openat resumed>) = 4 [pid 5637] rmdir("./20" [pid 5636] <... openat resumed>) = 3 [pid 5743] ioctl(4, LOOP_SET_FD, 3 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5636] fstat(3 [pid 5744] +++ exited with 0 +++ [pid 5743] <... ioctl resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5743] close(3 [pid 5638] rmdir("./20" [pid 5637] mkdir("./21", 0777 [pid 5743] <... close resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5636] getdents64(3 [pid 5638] mkdir("./21", 0777 [pid 5743] close(4 [pid 5638] <... mkdir resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5744, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 s */} --- [pid 5743] <... close resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... mkdir resumed>) = 0 [pid 5636] umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5743] mkdir("./bus", 0777 [pid 5638] <... openat resumed>) = 3 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5743] <... mkdir resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... restart_syscall resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] newfstatat(AT_FDCWD, "./20/binderfs" [pid 5638] <... ioctl resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] close(3) = 0 [pid 5634] umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] unlink("./20/binderfs" [pid 5634] <... openat resumed>) = 3 [pid 5743] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./19/binderfs"ci2-upstream-fs/strace-static-x86_64: Process 5745 attached [pid 5637] <... openat resumed>) = 3 [pid 5636] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5745] set_robust_list(0x55555d1b46e0, 24 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5634] <... unlink resumed>) = 0 [pid 5745] <... set_robust_list resumed>) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5745 [pid 5745] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... ioctl resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] close(3 [pid 5745] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5745] chdir("./21") = 0 [ 239.742098][ T5743] loop4: detected capacity change from 0 to 32768 [pid 5745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5745] setpgid(0, 0) = 0 [pid 5745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5745] write(3, "1000", 4) = 4 [pid 5745] close(3) = 0 [pid 5745] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5745] write(1, "executing program\n", 18) = 18 [pid 5743] <... mount resumed>) = 0 [pid 5745] memfd_create("syzkaller", 0) = 3 [pid 5743] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5743] chdir("./bus" [pid 5745] <... mmap resumed>) = 0x7fb9643a6000 [pid 5743] <... chdir resumed>) = 0 [pid 5743] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5743] exit_group(0) = ? [pid 5743] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5743, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=30 /* 0.30 s */} --- [pid 5640] umount2("./19", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./20/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] fstat(3 [pid 5636] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(3 [pid 5636] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] <... openat resumed>) = 4 [pid 5640] umount2("./19/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] fstat(4 [pid 5640] unlink("./19/binderfs" [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... unlink resumed>) = 0 [pid 5636] getdents64(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] newfstatat(AT_FDCWD, "./19/bus" [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4 [pid 5640] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./20/bus" [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5634] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5636] close(3) = 0 [pid 5636] rmdir("./20" [pid 5634] fstat(4 [pid 5636] <... rmdir resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] mkdir("./21", 0777) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... close resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5634] rmdir("./19/bus" [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5634] <... rmdir resumed>) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] getdents64(3 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./19") = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5746 [pid 5634] mkdir("./20", 0777) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5746 attached [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5746] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5746] <... set_robust_list resumed>) = 0 [pid 5746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5746] chdir("./21" [pid 5634] <... ioctl resumed>) = 0 [pid 5634] close(3 [pid 5746] <... chdir resumed>) = 0 [pid 5746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5746] setpgid(0, 0 [pid 5634] <... close resumed>) = 0 [pid 5746] <... setpgid resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5746] <... openat resumed>) = 3 [pid 5746] write(3, "1000", 4) = 4 [pid 5746] close(3) = 0 [pid 5746] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5746] write(1, "executing program\n", 18) = 18 [pid 5746] memfd_create("syzkaller", 0ci2-upstream-fs/strace-static-x86_64: Process 5747 attached ) = 3 [pid 5640] <... umount2 resumed>) = 0 [pid 5747] set_robust_list(0x55555d1b46e0, 24) = 0 executing program [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5747 [pid 5747] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5747] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5747] chdir("./20" [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5747] <... chdir resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./19/bus" [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5747] setpgid(0, 0 [pid 5746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5747] <... setpgid resumed>) = 0 [pid 5640] umount2("./19/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5746] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./19/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5747] <... openat resumed>) = 3 [pid 5640] <... openat resumed>) = 4 [pid 5640] fstat(4 [pid 5747] write(3, "1000", 4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5747] <... write resumed>) = 4 [pid 5640] getdents64(4 [pid 5747] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5747] <... close resumed>) = 0 [pid 5640] getdents64(4 [pid 5747] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5747] <... symlink resumed>) = 0 [pid 5640] close(4) = 0 [pid 5747] write(1, "executing program\n", 18 [pid 5640] rmdir("./19/bus" [pid 5747] <... write resumed>) = 18 [pid 5640] <... rmdir resumed>) = 0 executing program [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5747] memfd_create("syzkaller", 0 [pid 5640] rmdir("./19" [pid 5747] <... memfd_create resumed>) = 3 [pid 5640] <... rmdir resumed>) = 0 [pid 5747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] mkdir("./20", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5748 attached , child_tidptr=0x55555d1b46d0) = 5748 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5748] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5748] chdir("./20") = 0 [pid 5748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5748] setpgid(0, 0) = 0 [pid 5748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5748] write(3, "1000", 4) = 4 [pid 5748] close(3) = 0 [pid 5748] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5748] write(1, "executing program\n", 18) = 18 [pid 5748] memfd_create("syzkaller", 0) = 3 [pid 5748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5749 ci2-upstream-fs/strace-static-x86_64: Process 5749 attached [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5749] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5749] chdir("./21") = 0 [pid 5749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5749] setpgid(0, 0) = 0 [pid 5749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5749] write(3, "1000", 4) = 4 [pid 5749] close(3) = 0 [pid 5749] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5749] write(1, "executing program\n", 18) = 18 [pid 5749] memfd_create("syzkaller", 0 executing program [pid 5746] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5749] <... memfd_create resumed>) = 3 [pid 5749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5749] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5745] <... write resumed>) = 16777216 [pid 5747] <... write resumed>) = 16777216 [pid 5746] <... write resumed>) = 16777216 [pid 5747] munmap(0x7fb9643a6000, 138412032 [pid 5746] munmap(0x7fb9643a6000, 138412032 [pid 5745] munmap(0x7fb9643a6000, 138412032 [pid 5746] <... munmap resumed>) = 0 [pid 5746] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5746] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5746] close(3) = 0 [pid 5747] <... munmap resumed>) = 0 [pid 5746] close(4 [pid 5747] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5746] <... close resumed>) = 0 [pid 5745] <... munmap resumed>) = 0 [pid 5747] <... openat resumed>) = 4 [pid 5746] mkdir("./bus", 0777 [pid 5745] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5747] ioctl(4, LOOP_SET_FD, 3 [pid 5746] <... mkdir resumed>) = 0 [pid 5745] <... openat resumed>) = 4 [pid 5745] ioctl(4, LOOP_SET_FD, 3 [pid 5746] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5747] <... ioctl resumed>) = 0 [pid 5745] <... ioctl resumed>) = 0 [pid 5747] close(3 [pid 5745] close(3 [pid 5747] <... close resumed>) = 0 [pid 5745] <... close resumed>) = 0 [pid 5747] close(4 [pid 5745] close(4 [pid 5747] <... close resumed>) = 0 [pid 5745] <... close resumed>) = 0 [pid 5747] mkdir("./bus", 0777 [pid 5745] mkdir("./bus", 0777) = 0 [pid 5747] <... mkdir resumed>) = 0 [pid 5746] <... mount resumed>) = 0 [pid 5745] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5746] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5746] chdir("./bus") = 0 [pid 5746] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5747] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5746] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5746] exit_group(0) = ? [pid 5746] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5746, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5747] <... mount resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5747] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5747] <... openat resumed>) = 3 [pid 5745] <... mount resumed>) = 0 [pid 5747] chdir("./bus" [pid 5745] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... openat resumed>) = 3 [pid 5747] <... chdir resumed>) = 0 [pid 5745] <... openat resumed>) = 3 [pid 5636] fstat(3 [pid 5747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5747] exit_group(0 [pid 5745] chdir("./bus" [pid 5747] <... exit_group resumed>) = ? [pid 5745] <... chdir resumed>) = 0 [pid 5636] getdents64(3 [pid 5745] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5747] +++ exited with 0 +++ [pid 5745] exit_group(0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5747, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=25 /* 0.25 s */} --- [pid 5745] <... exit_group resumed>) = ? [pid 5636] umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./21/binderfs" [pid 5634] umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5745] +++ exited with 0 +++ [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] unlink("./21/binderfs") = 0 [pid 5634] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5745, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=30 /* 0.30 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... openat resumed>) = 3 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3 [pid 5748] <... write resumed>) = 16777216 [pid 5748] munmap(0x7fb9643a6000, 138412032 [pid 5638] umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./20/binderfs" [pid 5638] <... openat resumed>) = 3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] fstat(3 [pid 5634] unlink("./20/binderfs") = 0 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./21/binderfs" [pid 5748] <... munmap resumed>) = 0 [pid 5748] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5748] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5748] close(3 [pid 5638] <... unlink resumed>) = 0 [pid 5748] <... close resumed>) = 0 [pid 5638] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5748] close(4) = 0 [pid 5748] mkdir("./bus", 0777) = 0 [pid 5636] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5748] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./21/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4 [pid 5634] <... umount2 resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5634] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5749] <... write resumed>) = 16777216 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4 [pid 5749] munmap(0x7fb9643a6000, 138412032 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] close(4 [pid 5634] newfstatat(AT_FDCWD, "./20/bus" [pid 5636] <... close resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] rmdir("./21/bus" [pid 5634] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4 [pid 5636] <... rmdir resumed>) = 0 [pid 5636] getdents64(3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./20/bus") = 0 [pid 5748] <... mount resumed>) = 0 [pid 5636] rmdir("./21" [pid 5748] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5748] chdir("./bus") = 0 [pid 5634] getdents64(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5748] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] mkdir("./22", 0777 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5748] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] close(3 [pid 5748] exit_group(0 [pid 5634] <... close resumed>) = 0 [pid 5748] <... exit_group resumed>) = ? [pid 5634] rmdir("./20" [pid 5749] <... munmap resumed>) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5749] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] <... umount2 resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5634] <... rmdir resumed>) = 0 [pid 5749] <... openat resumed>) = 4 [pid 5749] ioctl(4, LOOP_SET_FD, 3 [pid 5748] +++ exited with 0 +++ [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5749] <... ioctl resumed>) = 0 [pid 5638] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... ioctl resumed>) = 0 [pid 5634] mkdir("./21", 0777 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5748, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] close(3 [pid 5634] <... mkdir resumed>) = 0 [pid 5749] close(3 [pid 5638] newfstatat(AT_FDCWD, "./21/bus" [pid 5636] <... close resumed>) = 0 [pid 5749] <... close resumed>) = 0 [pid 5749] close(4 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5749] <... close resumed>) = 0 [pid 5638] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5749] mkdir("./bus", 0777 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5749] <... mkdir resumed>) = 0 [pid 5640] umount2("./20", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... openat resumed>) = 3 [pid 5638] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORYci2-upstream-fs/strace-static-x86_64: Process 5750 attached [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... openat resumed>) = 4 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5640] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] fstat(4 [pid 5634] <... ioctl resumed>) = 0 [pid 5750] set_robust_list(0x55555d1b46e0, 24 [pid 5749] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] <... openat resumed>) = 3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5750 [pid 5750] <... set_robust_list resumed>) = 0 [pid 5640] fstat(3 [pid 5638] getdents64(4 [pid 5634] close(3 [pid 5750] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... close resumed>) = 0 [pid 5750] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] getdents64(3 [pid 5638] getdents64(4 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5750] chdir("./22" [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5750] <... chdir resumed>) = 0 [pid 5640] umount2("./20/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5750] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] close(4 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5750] <... prctl resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./20/binderfs" [pid 5638] <... close resumed>) = 0 [pid 5750] setpgid(0, 0) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] rmdir("./21/bus" [pid 5640] unlink("./20/binderfs"ci2-upstream-fs/strace-static-x86_64: Process 5751 attached [pid 5750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... unlink resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5751] set_robust_list(0x55555d1b46e0, 24 [pid 5750] <... openat resumed>) = 3 [pid 5751] <... set_robust_list resumed>) = 0 [pid 5638] getdents64(3 [pid 5751] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5751 [pid 5750] write(3, "1000", 4 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5751] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5750] <... write resumed>) = 4 [pid 5749] <... mount resumed>) = 0 [pid 5638] close(3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5750] close(3 [pid 5749] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5751] chdir("./21" [pid 5750] <... close resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5751] <... chdir resumed>) = 0 [pid 5749] <... openat resumed>) = 3 [pid 5751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5750] symlink("/dev/binderfs", "./binderfs" [pid 5638] rmdir("./21" [pid 5749] chdir("./bus" [pid 5751] setpgid(0, 0 [pid 5749] <... chdir resumed>) = 0 [pid 5751] <... setpgid resumed>) = 0 [pid 5750] <... symlink resumed>) = 0 [pid 5749] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] <... rmdir resumed>) = 0 [pid 5751] <... openat resumed>) = 3 [pid 5749] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5750] write(1, "executing program\n", 18 [pid 5638] mkdir("./22", 0777 [pid 5750] <... write resumed>) = 18 executing program [pid 5751] write(3, "1000", 4 [pid 5750] memfd_create("syzkaller", 0 [pid 5749] exit_group(0 [pid 5638] <... mkdir resumed>) = 0 [pid 5751] <... write resumed>) = 4 [pid 5749] <... exit_group resumed>) = ? [pid 5750] <... memfd_create resumed>) = 3 [pid 5751] close(3 [pid 5750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5751] <... close resumed>) = 0 [pid 5750] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5751] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5638] <... openat resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5749] +++ exited with 0 +++ [pid 5751] write(1, "executing program\n", 18 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5749, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} --- [pid 5638] close(3 [pid 5751] <... write resumed>) = 18 executing program [pid 5751] memfd_create("syzkaller", 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5751] <... memfd_create resumed>) = 3 [pid 5751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5752 attached [pid 5640] <... umount2 resumed>) = 0 [pid 5752] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5752 [pid 5640] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5752] <... set_robust_list resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5752] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] newfstatat(AT_FDCWD, "./20/bus" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5752] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5752] chdir("./22" [pid 5640] umount2("./20/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 3 [pid 5752] <... chdir resumed>) = 0 [pid 5752] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] fstat(3 [pid 5752] <... prctl resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./20/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5752] setpgid(0, 0) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5637] getdents64(3 [pid 5752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5752] <... openat resumed>) = 3 [pid 5640] fstat(4 [pid 5637] umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5752] write(3, "1000", 4 [pid 5640] getdents64(4 [pid 5637] newfstatat(AT_FDCWD, "./21/binderfs" [pid 5752] <... write resumed>) = 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5752] close(3 [pid 5640] getdents64(4 [pid 5637] unlink("./21/binderfs" [pid 5752] <... close resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... unlink resumed>) = 0 [pid 5752] symlink("/dev/binderfs", "./binderfs" [pid 5640] close(4 [pid 5752] <... symlink resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5637] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] rmdir("./20/bus" [pid 5752] write(1, "executing program\n", 18 [pid 5640] <... rmdir resumed>) = 0 [pid 5752] <... write resumed>) = 18 executing program [pid 5752] memfd_create("syzkaller", 0) = 3 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3 [pid 5752] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... close resumed>) = 0 [pid 5752] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] rmdir("./20") = 0 [pid 5640] mkdir("./21", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5753 attached , child_tidptr=0x55555d1b46d0) = 5753 [pid 5637] <... umount2 resumed>) = 0 [pid 5753] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5753] <... set_robust_list resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5753] chdir("./21") = 0 [pid 5637] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5753] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./21/bus" [pid 5753] <... prctl resumed>) = 0 [pid 5753] setpgid(0, 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5753] <... setpgid resumed>) = 0 [pid 5753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5637] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5753] write(3, "1000", 4 [pid 5637] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5753] <... write resumed>) = 4 [pid 5753] close(3 [pid 5637] <... openat resumed>) = 4 [pid 5753] <... close resumed>) = 0 [pid 5753] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5753] write(1, "executing program\n", 18 executing program [pid 5637] getdents64(4 [pid 5753] <... write resumed>) = 18 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4 [pid 5753] memfd_create("syzkaller", 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./21/bus" [pid 5753] <... memfd_create resumed>) = 3 [pid 5637] <... rmdir resumed>) = 0 [pid 5753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./21") = 0 [pid 5637] mkdir("./22", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5754 attached [pid 5754] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5754 [pid 5754] <... set_robust_list resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5754] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5754] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5754] chdir("./22") = 0 [pid 5754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5754] setpgid(0, 0) = 0 [pid 5754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5754] write(3, "1000", 4) = 4 [pid 5754] close(3) = 0 [pid 5754] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5754] write(1, "executing program\n", 18) = 18 executing program [pid 5754] memfd_create("syzkaller", 0) = 3 [pid 5754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5750] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5751] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5752] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5753] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5754] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5751] <... write resumed>) = 16777216 [pid 5751] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5751] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5751] close(3) = 0 [pid 5751] close(4) = 0 [pid 5751] mkdir("./bus", 0777) = 0 [ 243.112742][ T5751] set_capacity_and_notify: 5 callbacks suppressed [ 243.112766][ T5751] loop0: detected capacity change from 0 to 32768 [pid 5751] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5750] <... write resumed>) = 16777216 [pid 5751] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5750] munmap(0x7fb9643a6000, 138412032 [pid 5751] <... openat resumed>) = 3 [pid 5751] chdir("./bus") = 0 [pid 5751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5751] exit_group(0) = ? [pid 5750] <... munmap resumed>) = 0 [pid 5750] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5751] +++ exited with 0 +++ [pid 5750] ioctl(4, LOOP_SET_FD, 3 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5751, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=25 /* 0.25 s */} --- [pid 5750] <... ioctl resumed>) = 0 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5750] close(3) = 0 [pid 5750] close(4 [pid 5634] umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5750] <... close resumed>) = 0 [pid 5750] mkdir("./bus", 0777 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5750] <... mkdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5750] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./21/binderfs") = 0 [ 243.246817][ T5750] loop1: detected capacity change from 0 to 32768 [pid 5634] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5750] <... mount resumed>) = 0 [pid 5750] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5750] chdir("./bus") = 0 [pid 5750] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5750] exit_group(0) = ? [pid 5750] +++ exited with 0 +++ [pid 5752] <... write resumed>) = 16777216 [pid 5752] munmap(0x7fb9643a6000, 138412032 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5750, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=22 /* 0.22 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5752] <... munmap resumed>) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5752] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5636] umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5752] <... openat resumed>) = 4 [pid 5752] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5752] <... ioctl resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... openat resumed>) = 3 [pid 5634] newfstatat(AT_FDCWD, "./21/bus" [pid 5636] fstat(3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5752] close(3) = 0 [pid 5636] getdents64(3 [pid 5634] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5752] close(4 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5752] <... close resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5752] mkdir("./bus", 0777 [pid 5634] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5752] <... mkdir resumed>) = 0 [pid 5636] umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... openat resumed>) = 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] fstat(4 [pid 5752] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] unlink("./22/binderfs" [pid 5634] getdents64(4 [pid 5636] <... unlink resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./21/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5752] <... mount resumed>) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./21" [ 243.384055][ T5752] loop3: detected capacity change from 0 to 32768 [pid 5752] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] mkdir("./22", 0777) = 0 [pid 5752] chdir("./bus" [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5752] <... chdir resumed>) = 0 [pid 5752] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] <... openat resumed>) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5752] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] <... ioctl resumed>) = 0 [pid 5634] close(3 [pid 5752] exit_group(0 [pid 5634] <... close resumed>) = 0 [pid 5752] <... exit_group resumed>) = ? [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5752] +++ exited with 0 +++ ci2-upstream-fs/strace-static-x86_64: Process 5755 attached [pid 5753] <... write resumed>) = 16777216 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5752, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- [pid 5755] set_robust_list(0x55555d1b46e0, 24 [pid 5753] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5755 [pid 5755] <... set_robust_list resumed>) = 0 [pid 5755] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... umount2 resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5755] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5755] chdir("./22" [pid 5636] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5755] <... chdir resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5755] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5636] newfstatat(AT_FDCWD, "./22/bus" [pid 5638] umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5755] <... prctl resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5755] setpgid(0, 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5755] <... setpgid resumed>) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] fstat(3 [pid 5636] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5755] <... openat resumed>) = 3 [pid 5638] getdents64(3 [pid 5636] <... openat resumed>) = 4 [pid 5755] write(3, "1000", 4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5755] <... write resumed>) = 4 [pid 5636] fstat(4 [pid 5638] umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5755] close(3 [pid 5753] <... munmap resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5755] <... close resumed>) = 0 [pid 5755] symlink("/dev/binderfs", "./binderfs" [pid 5636] getdents64(4 [pid 5753] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] newfstatat(AT_FDCWD, "./22/binderfs" [pid 5755] <... symlink resumed>) = 0 [pid 5753] <... openat resumed>) = 4 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] unlink("./22/binderfs" [pid 5755] write(1, "executing program\n", 18 [pid 5638] <... unlink resumed>) = 0 [pid 5636] getdents64(4 [pid 5755] <... write resumed>) = 18 executing program [pid 5753] ioctl(4, LOOP_SET_FD, 3 [pid 5755] memfd_create("syzkaller", 0 [pid 5638] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5755] <... memfd_create resumed>) = 3 [pid 5636] close(4) = 0 [pid 5755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] rmdir("./22/bus" [pid 5755] <... mmap resumed>) = 0x7fb9643a6000 [pid 5754] <... write resumed>) = 16777216 [pid 5636] <... rmdir resumed>) = 0 [pid 5754] munmap(0x7fb9643a6000, 138412032 [pid 5753] <... ioctl resumed>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5753] close(3) = 0 [pid 5636] close(3 [pid 5753] close(4) = 0 [pid 5636] <... close resumed>) = 0 [pid 5753] mkdir("./bus", 0777) = 0 [pid 5636] rmdir("./22" [pid 5753] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... rmdir resumed>) = 0 [pid 5754] <... munmap resumed>) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5636] mkdir("./23", 0777 [pid 5754] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5754] <... openat resumed>) = 4 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... mkdir resumed>) = 0 [pid 5754] ioctl(4, LOOP_SET_FD, 3 [pid 5638] newfstatat(AT_FDCWD, "./22/bus" [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5754] <... ioctl resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5754] close(3 [pid 5638] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5754] <... close resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 243.543287][ T5753] loop4: detected capacity change from 0 to 32768 [pid 5754] close(4 [pid 5638] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5754] <... close resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5754] mkdir("./bus", 0777 [pid 5638] <... openat resumed>) = 4 [pid 5754] <... mkdir resumed>) = 0 [pid 5753] <... mount resumed>) = 0 [pid 5638] fstat(4 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5754] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5753] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5753] <... openat resumed>) = 3 [pid 5638] getdents64(4 [pid 5636] <... ioctl resumed>) = 0 [pid 5753] chdir("./bus" [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] close(3 [ 243.604529][ T5754] loop2: detected capacity change from 0 to 32768 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5754] <... mount resumed>) = 0 [pid 5753] <... chdir resumed>) = 0 [pid 5638] close(4 [pid 5636] <... close resumed>) = 0 [pid 5754] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5753] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] <... close resumed>) = 0 [pid 5754] <... openat resumed>) = 3 [pid 5753] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] rmdir("./22/bus" [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5754] chdir("./bus" [pid 5753] exit_group(0 [pid 5638] <... rmdir resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5754] <... chdir resumed>) = 0 [pid 5638] getdents64(3 [pid 5754] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5753] <... exit_group resumed>) = ? [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5754] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] close(3 [pid 5754] exit_group(0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./22"ci2-upstream-fs/strace-static-x86_64: Process 5756 attached [pid 5754] <... exit_group resumed>) = ? [pid 5753] +++ exited with 0 +++ [pid 5638] <... rmdir resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5753, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=31 /* 0.31 s */} --- [pid 5638] mkdir("./23", 0777 [pid 5756] set_robust_list(0x55555d1b46e0, 24 [pid 5754] +++ exited with 0 +++ [pid 5638] <... mkdir resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5756 [pid 5756] <... set_robust_list resumed>) = 0 [pid 5756] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5754, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5756] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5756] chdir("./23" [pid 5638] <... openat resumed>) = 3 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5756] <... chdir resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5637] <... restart_syscall resumed>) = 0 [pid 5756] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] <... ioctl resumed>) = 0 [pid 5756] <... prctl resumed>) = 0 [pid 5638] close(3 [pid 5756] setpgid(0, 0) = 0 [pid 5640] umount2("./21", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... close resumed>) = 0 [pid 5756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... openat resumed>) = 3 [pid 5756] <... openat resumed>) = 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] fstat(3 [pid 5637] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5756] write(3, "1000", 4ci2-upstream-fs/strace-static-x86_64: Process 5757 attached ) = 4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3 [pid 5756] close(3 [pid 5640] getdents64(3 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5756] <... close resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5757 [pid 5637] getdents64(3 [pid 5757] set_robust_list(0x55555d1b46e0, 24 [pid 5756] symlink("/dev/binderfs", "./binderfs" [pid 5640] umount2("./21/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5757] <... set_robust_list resumed>) = 0 [pid 5756] <... symlink resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5757] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] newfstatat(AT_FDCWD, "./21/binderfs" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5757] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5756] write(1, "executing program\n", 18 executing program [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] newfstatat(AT_FDCWD, "./22/binderfs" [pid 5757] chdir("./23" [pid 5756] <... write resumed>) = 18 [pid 5757] <... chdir resumed>) = 0 [pid 5757] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5756] memfd_create("syzkaller", 0 [pid 5640] unlink("./21/binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5757] <... prctl resumed>) = 0 [pid 5757] setpgid(0, 0 [pid 5756] <... memfd_create resumed>) = 3 [pid 5640] <... unlink resumed>) = 0 [pid 5637] unlink("./22/binderfs") = 0 [pid 5757] <... setpgid resumed>) = 0 [pid 5756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5756] <... mmap resumed>) = 0x7fb9643a6000 [pid 5757] <... openat resumed>) = 3 [pid 5757] write(3, "1000", 4) = 4 [pid 5757] close(3) = 0 [pid 5757] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5757] write(1, "executing program\n", 18) = 18 executing program [pid 5757] memfd_create("syzkaller", 0) = 3 [pid 5757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] <... umount2 resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./21/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./21/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./22/bus" [pid 5640] openat(AT_FDCWD, "./21/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5637] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] fstat(4 [pid 5637] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5640] getdents64(4 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4 [pid 5640] getdents64(4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] getdents64(4 [pid 5640] close(4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... close resumed>) = 0 [pid 5637] close(4 [pid 5640] rmdir("./21/bus" [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./22/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./22") = 0 [pid 5637] mkdir("./23", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5640] <... rmdir resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5640] getdents64(3 [pid 5637] <... ioctl resumed>) = 0 [pid 5637] close(3) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] close(3 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] <... close resumed>) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] rmdir("./21") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5758 attached [pid 5640] mkdir("./22", 0777 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5758 [pid 5640] <... mkdir resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5758] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5758] chdir("./23" [pid 5640] <... openat resumed>) = 3 [pid 5758] <... chdir resumed>) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5640] <... ioctl resumed>) = 0 [pid 5640] close(3 [pid 5758] setpgid(0, 0 [pid 5640] <... close resumed>) = 0 [pid 5758] <... setpgid resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5758] write(3, "1000", 4) = 4 [pid 5758] close(3) = 0 [pid 5758] symlink("/dev/binderfs", "./binderfs") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5759 attached [pid 5758] write(1, "executing program\n", 18) = 18 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5759 executing program [pid 5758] memfd_create("syzkaller", 0 [pid 5759] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5759] <... set_robust_list resumed>) = 0 [pid 5759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5759] chdir("./22" [pid 5758] <... memfd_create resumed>) = 3 [pid 5759] <... chdir resumed>) = 0 [pid 5758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5759] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5758] <... mmap resumed>) = 0x7fb9643a6000 [pid 5759] <... prctl resumed>) = 0 [pid 5759] setpgid(0, 0) = 0 [pid 5759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5759] write(3, "1000", 4) = 4 [pid 5759] close(3) = 0 [pid 5759] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5759] write(1, "executing program\n", 18) = 18 executing program [pid 5759] memfd_create("syzkaller", 0) = 3 [pid 5759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5756] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5758] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5755] <... write resumed>) = 16777216 [pid 5755] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5755] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5755] close(3) = 0 [pid 5755] close(4) = 0 [pid 5755] mkdir("./bus", 0777) = 0 [pid 5755] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5757] <... write resumed>) = 16777216 [pid 5757] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5757] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [ 245.108886][ T5755] loop0: detected capacity change from 0 to 32768 [pid 5757] ioctl(4, LOOP_SET_FD, 3 [pid 5755] <... mount resumed>) = 0 [pid 5757] <... ioctl resumed>) = 0 [pid 5755] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5757] close(3 [pid 5755] <... openat resumed>) = 3 [pid 5757] <... close resumed>) = 0 [pid 5757] close(4 [pid 5755] chdir("./bus" [pid 5757] <... close resumed>) = 0 [pid 5755] <... chdir resumed>) = 0 [pid 5757] mkdir("./bus", 0777 [pid 5755] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5757] <... mkdir resumed>) = 0 [pid 5755] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5757] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5755] exit_group(0 [pid 5756] <... write resumed>) = 16777216 [pid 5756] munmap(0x7fb9643a6000, 138412032 [pid 5755] <... exit_group resumed>) = ? [pid 5755] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5755, si_uid=0, si_status=0, si_utime=0, si_stime=35 /* 0.35 s */} --- [pid 5634] umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5757] <... mount resumed>) = 0 [ 245.176062][ T5757] loop3: detected capacity change from 0 to 32768 [pid 5634] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5757] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5634] <... openat resumed>) = 3 [pid 5757] chdir("./bus") = 0 [pid 5757] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] fstat(3 [pid 5757] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5757] exit_group(0 [pid 5756] <... munmap resumed>) = 0 [pid 5756] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] getdents64(3 [pid 5757] <... exit_group resumed>) = ? [pid 5756] <... openat resumed>) = 4 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5756] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5757] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5757, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=26 /* 0.26 s */} --- [pid 5634] umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5756] close(3 [pid 5634] newfstatat(AT_FDCWD, "./22/binderfs" [pid 5638] umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5756] <... close resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5756] close(4 [pid 5638] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5758] <... write resumed>) = 16777216 [pid 5756] <... close resumed>) = 0 [pid 5634] unlink("./22/binderfs" [pid 5756] mkdir("./bus", 0777 [pid 5638] <... openat resumed>) = 3 [pid 5758] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... unlink resumed>) = 0 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3 [pid 5634] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5758] <... munmap resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5758] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] newfstatat(AT_FDCWD, "./23/binderfs" [pid 5758] <... openat resumed>) = 4 [pid 5758] ioctl(4, LOOP_SET_FD, 3 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 245.261102][ T5756] loop1: detected capacity change from 0 to 32768 [pid 5638] unlink("./23/binderfs" [pid 5758] <... ioctl resumed>) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5758] close(3) = 0 [pid 5638] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5758] close(4) = 0 [pid 5758] mkdir("./bus", 0777) = 0 [pid 5758] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5756] <... mkdir resumed>) = 0 [pid 5756] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5758] <... mount resumed>) = 0 [ 245.326137][ T5758] loop2: detected capacity change from 0 to 32768 [pid 5758] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5758] chdir("./bus") = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5758] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5758] exit_group(0 [pid 5756] <... mount resumed>) = 0 [pid 5758] <... exit_group resumed>) = ? [pid 5756] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5756] <... openat resumed>) = 3 [pid 5756] chdir("./bus" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5756] <... chdir resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./22/bus" [pid 5758] +++ exited with 0 +++ [pid 5756] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5756] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5758, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=26 /* 0.26 s */} --- [pid 5634] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5756] exit_group(0 [pid 5637] umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5756] <... exit_group resumed>) = ? [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... openat resumed>) = 4 [pid 5637] <... openat resumed>) = 3 [pid 5634] fstat(4 [pid 5637] fstat(3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] rmdir("./22/bus" [pid 5756] +++ exited with 0 +++ [pid 5637] getdents64(3 [pid 5634] <... rmdir resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5756, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=35 /* 0.35 s */} --- [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] newfstatat(AT_FDCWD, "./23/binderfs" [pid 5634] getdents64(3 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5637] unlink("./23/binderfs" [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3 [pid 5637] <... unlink resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5637] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] rmdir("./22" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... rmdir resumed>) = 0 [pid 5638] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... openat resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] fstat(3 [pid 5638] newfstatat(AT_FDCWD, "./23/bus" [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5759] <... write resumed>) = 16777216 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] mkdir("./23", 0777 [pid 5636] getdents64(3 [pid 5759] munmap(0x7fb9643a6000, 138412032 [pid 5638] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... mkdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... openat resumed>) = 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] newfstatat(AT_FDCWD, "./23/binderfs" [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5638] getdents64(4 [pid 5636] unlink("./23/binderfs" [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5636] <... unlink resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4 [pid 5634] <... ioctl resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5636] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rmdir("./23/bus" [pid 5634] close(3 [pid 5638] <... rmdir resumed>) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./23") = 0 [pid 5638] mkdir("./24", 0777 [pid 5759] <... munmap resumed>) = 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3 [pid 5759] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5759] ioctl(4, LOOP_SET_FD, 3) = 0 [ 245.519632][ T5759] loop4: detected capacity change from 0 to 32768 [pid 5759] close(3) = 0 [pid 5759] close(4) = 0 [pid 5759] mkdir("./bus", 0777) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5636] <... umount2 resumed>) = 0 [pid 5759] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] newfstatat(AT_FDCWD, "./23/bus" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] newfstatat(AT_FDCWD, "./23/bus" [pid 5637] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... openat resumed>) = 4 [pid 5636] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5637] getdents64(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4 [pid 5637] getdents64(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4 [pid 5637] close(4 [pid 5636] <... close resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5636] rmdir("./23/bus" [pid 5637] rmdir("./23/bus" [pid 5636] <... rmdir resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5637] getdents64(3 [pid 5636] getdents64(3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5637] close(3 [pid 5759] <... mount resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5636] rmdir("./23" [pid 5637] rmdir("./23" [pid 5636] <... rmdir resumed>) = 0 [pid 5759] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] <... rmdir resumed>) = 0 [pid 5759] <... openat resumed>) = 3 [pid 5759] chdir("./bus" [pid 5636] mkdir("./24", 0777 [pid 5759] <... chdir resumed>) = 0 [pid 5759] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] <... mkdir resumed>) = 0 [pid 5759] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] mkdir("./24", 0777 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5759] exit_group(0 [pid 5637] <... mkdir resumed>) = 0 [pid 5759] <... exit_group resumed>) = ? [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] <... openat resumed>) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5637] <... openat resumed>) = 3 [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5759] +++ exited with 0 +++ [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5759, si_uid=0, si_status=0, si_utime=0, si_stime=31 /* 0.31 s */} --- [pid 5637] <... ioctl resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] close(3 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] <... close resumed>) = 0 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5760 attached [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5760 [pid 5760] set_robust_list(0x55555d1b46e0, 24 [pid 5640] umount2("./22", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ci2-upstream-fs/strace-static-x86_64: Process 5761 attached [pid 5760] <... set_robust_list resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5761 [pid 5760] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... openat resumed>) = 3 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5760] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5761] set_robust_list(0x55555d1b46e0, 24 [pid 5760] chdir("./24" [pid 5640] fstat(3 [pid 5761] <... set_robust_list resumed>) = 0 [pid 5761] rt_sigprocmask(SIG_SETMASK, [] [pid 5760] <... chdir resumed>) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5761] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5760] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] getdents64(3 [pid 5761] chdir("./24" [pid 5760] <... prctl resumed>) = 0 [pid 5761] <... chdir resumed>) = 0 [pid 5761] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5760] setpgid(0, 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5761] <... prctl resumed>) = 0 [pid 5761] setpgid(0, 0 [pid 5760] <... setpgid resumed>) = 0 [pid 5640] umount2("./22/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5761] <... setpgid resumed>) = 0 [pid 5760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5760] <... openat resumed>) = 3 [pid 5640] newfstatat(AT_FDCWD, "./22/binderfs" [pid 5761] <... openat resumed>) = 3 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./22/binderfs" [pid 5760] write(3, "1000", 4 [pid 5761] write(3, "1000", 4 [pid 5760] <... write resumed>) = 4 [pid 5640] <... unlink resumed>) = 0 [pid 5761] <... write resumed>) = 4 [pid 5760] close(3 [pid 5640] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5761] close(3 [pid 5760] <... close resumed>) = 0 [pid 5761] <... close resumed>) = 0 [pid 5761] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5760] symlink("/dev/binderfs", "./binderfs" [pid 5761] write(1, "executing program\n", 18 [pid 5760] <... symlink resumed>) = 0 executing program [pid 5761] <... write resumed>) = 18 executing program [pid 5760] write(1, "executing program\n", 18) = 18 [pid 5760] memfd_create("syzkaller", 0 [pid 5761] memfd_create("syzkaller", 0) = 3 [pid 5760] <... memfd_create resumed>) = 3 [pid 5761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5761] <... mmap resumed>) = 0x7fb9643a6000 [pid 5760] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./22/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./22/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./22/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./22/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./22") = 0 [pid 5640] mkdir("./23", 0777) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] <... openat resumed>) = 3 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5762 attached [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5762 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5762] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5763 attached [pid 5762] <... set_robust_list resumed>) = 0 [pid 5762] rt_sigprocmask(SIG_SETMASK, [] [pid 5763] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5763 [pid 5762] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5763] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5763] rt_sigprocmask(SIG_SETMASK, [] [pid 5762] chdir("./23" [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5763] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5762] <... chdir resumed>) = 0 [pid 5763] chdir("./23" [pid 5762] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5763] <... chdir resumed>) = 0 [pid 5762] <... prctl resumed>) = 0 [pid 5762] setpgid(0, 0 [pid 5763] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5762] <... setpgid resumed>) = 0 [pid 5763] <... prctl resumed>) = 0 [pid 5762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5763] setpgid(0, 0) = 0 [pid 5762] <... openat resumed>) = 3 [pid 5763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5762] write(3, "1000", 4) = 4 [pid 5762] close(3) = 0 [pid 5762] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5762] write(1, "executing program\n", 18) = 18 executing program [pid 5762] memfd_create("syzkaller", 0) = 3 [pid 5762] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5763] <... openat resumed>) = 3 [pid 5763] write(3, "1000", 4) = 4 [pid 5763] close(3) = 0 [pid 5763] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5763] write(1, "executing program\n", 18) = 18 executing program [pid 5763] memfd_create("syzkaller", 0) = 3 [pid 5763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5761] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5764 attached [pid 5764] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5764 [pid 5764] <... set_robust_list resumed>) = 0 [pid 5760] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5764] chdir("./24") = 0 [pid 5764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5764] setpgid(0, 0) = 0 [pid 5764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5764] write(3, "1000", 4) = 4 [pid 5764] close(3) = 0 [pid 5764] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5762] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 executing program [pid 5764] write(1, "executing program\n", 18) = 18 [pid 5764] memfd_create("syzkaller", 0) = 3 [pid 5764] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5764] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5762] <... write resumed>) = 16777216 [pid 5762] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5762] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5762] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5762] close(3) = 0 [pid 5762] close(4) = 0 [pid 5762] mkdir("./bus", 0777) = 0 [pid 5762] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5760] <... write resumed>) = 16777216 [pid 5760] munmap(0x7fb9643a6000, 138412032 [pid 5761] <... write resumed>) = 16777216 [pid 5761] munmap(0x7fb9643a6000, 138412032 [pid 5762] <... mount resumed>) = 0 [pid 5760] <... munmap resumed>) = 0 [pid 5762] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5760] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5762] <... openat resumed>) = 3 [pid 5762] chdir("./bus" [pid 5760] <... openat resumed>) = 4 [pid 5762] <... chdir resumed>) = 0 [pid 5760] ioctl(4, LOOP_SET_FD, 3 [pid 5762] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5760] <... ioctl resumed>) = 0 [pid 5762] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5761] <... munmap resumed>) = 0 [pid 5760] close(3 [pid 5762] exit_group(0 [pid 5760] <... close resumed>) = 0 [pid 5760] close(4 [pid 5762] <... exit_group resumed>) = ? [pid 5761] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5760] <... close resumed>) = 0 [pid 5761] ioctl(4, LOOP_SET_FD, 3 [pid 5760] mkdir("./bus", 0777) = 0 [pid 5762] +++ exited with 0 +++ [pid 5760] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5761] <... ioctl resumed>) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5762, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=21 /* 0.21 s */} --- [pid 5761] close(3 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5761] <... close resumed>) = 0 [pid 5761] close(4) = 0 [pid 5761] mkdir("./bus", 0777) = 0 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5761] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./23/binderfs") = 0 [pid 5761] <... mount resumed>) = 0 [pid 5760] <... mount resumed>) = 0 [pid 5634] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5761] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5760] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5761] chdir("./bus" [pid 5760] <... openat resumed>) = 3 [pid 5761] <... chdir resumed>) = 0 [pid 5760] chdir("./bus" [pid 5761] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5760] <... chdir resumed>) = 0 [pid 5761] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5760] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5761] exit_group(0) = ? [pid 5760] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5760] exit_group(0) = ? [pid 5761] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5761, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=22 /* 0.22 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5760] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5760, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=34 /* 0.34 s */} --- [pid 5637] umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] fstat(3 [pid 5636] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5636] <... openat resumed>) = 3 [pid 5636] fstat(3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./24/binderfs" [pid 5636] newfstatat(AT_FDCWD, "./24/binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./24/binderfs") = 0 [pid 5636] unlink("./24/binderfs") = 0 [pid 5637] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./23/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5763] <... write resumed>) = 16777216 [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./23/bus" [pid 5763] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./23") = 0 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] mkdir("./24", 0777 [pid 5637] <... umount2 resumed>) = 0 [pid 5636] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... mkdir resumed>) = 0 [pid 5637] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... openat resumed>) = 4 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] newfstatat(AT_FDCWD, "./24/bus" [pid 5636] fstat(4 [pid 5634] <... openat resumed>) = 3 [pid 5763] <... munmap resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5763] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] getdents64(4 [pid 5763] <... openat resumed>) = 4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... ioctl resumed>) = 0 [pid 5763] ioctl(4, LOOP_SET_FD, 3 [pid 5637] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5763] <... ioctl resumed>) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5636] getdents64(4 [pid 5634] close(3 [pid 5637] fstat(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5763] close(3 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... close resumed>) = 0 [pid 5763] <... close resumed>) = 0 [pid 5763] close(4 [pid 5637] getdents64(4 [pid 5636] close(4 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... close resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] getdents64(4 [pid 5763] <... close resumed>) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] rmdir("./24/bus" [pid 5763] mkdir("./bus", 0777 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... rmdir resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5765 attached [pid 5636] getdents64(3 [pid 5765] set_robust_list(0x55555d1b46e0, 24 [pid 5763] <... mkdir resumed>) = 0 [pid 5637] close(4 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5765 [pid 5765] <... set_robust_list resumed>) = 0 [pid 5763] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5765] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] rmdir("./24/bus" [pid 5636] close(3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5765] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] getdents64(3 [pid 5636] <... close resumed>) = 0 [pid 5765] chdir("./24" [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] rmdir("./24" [pid 5765] <... chdir resumed>) = 0 [pid 5637] close(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5765] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... close resumed>) = 0 [pid 5765] <... prctl resumed>) = 0 [pid 5765] setpgid(0, 0 [pid 5637] rmdir("./24" [pid 5765] <... setpgid resumed>) = 0 [pid 5636] mkdir("./25", 0777 [pid 5765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5765] <... openat resumed>) = 3 [pid 5765] write(3, "1000", 4 [pid 5637] mkdir("./25", 0777 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] <... mkdir resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5765] <... write resumed>) = 4 [pid 5763] <... mount resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5765] close(3 [pid 5763] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] <... openat resumed>) = 3 [pid 5636] close(3 [pid 5765] <... close resumed>) = 0 [pid 5763] <... openat resumed>) = 3 [pid 5636] <... close resumed>) = 0 [pid 5765] symlink("/dev/binderfs", "./binderfs" [pid 5763] chdir("./bus" [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5765] <... symlink resumed>) = 0 [pid 5763] <... chdir resumed>) = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5763] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] close(3 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5765] write(1, "executing program\n", 18 [pid 5763] <... openat resumed>) = -1 EBUSY (Device or resource busy) executing program [pid 5637] <... close resumed>) = 0 [pid 5765] <... write resumed>) = 18 [pid 5763] exit_group(0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5765] memfd_create("syzkaller", 0 [pid 5763] <... exit_group resumed>) = ? [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5766 attached [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5766 ci2-upstream-fs/strace-static-x86_64: Process 5767 attached [pid 5766] set_robust_list(0x55555d1b46e0, 24 [pid 5765] <... memfd_create resumed>) = 3 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5766] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5767] set_robust_list(0x55555d1b46e0, 24 [pid 5766] rt_sigprocmask(SIG_SETMASK, [] [pid 5765] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5767] <... set_robust_list resumed>) = 0 [pid 5766] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5767 [pid 5765] <... mmap resumed>) = 0x7fb9643a6000 [pid 5766] chdir("./25" [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5767] rt_sigprocmask(SIG_SETMASK, [] [pid 5763] +++ exited with 0 +++ [pid 5767] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5766] <... chdir resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5767] chdir("./25" [pid 5766] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5767] <... chdir resumed>) = 0 [pid 5766] <... prctl resumed>) = 0 [pid 5767] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5766] setpgid(0, 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5763, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=41 /* 0.41 s */} --- [pid 5767] <... prctl resumed>) = 0 [pid 5766] <... setpgid resumed>) = 0 [pid 5640] umount2("./23", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5767] setpgid(0, 0 [pid 5766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5767] <... setpgid resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5766] <... openat resumed>) = 3 [pid 5640] <... openat resumed>) = 3 [pid 5767] <... openat resumed>) = 3 [pid 5640] fstat(3 [pid 5767] write(3, "1000", 4 [pid 5766] write(3, "1000", 4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5767] <... write resumed>) = 4 [pid 5766] <... write resumed>) = 4 [pid 5640] getdents64(3 [pid 5767] close(3 [pid 5766] close(3 [pid 5767] <... close resumed>) = 0 [pid 5766] <... close resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5767] symlink("/dev/binderfs", "./binderfs" [pid 5766] symlink("/dev/binderfs", "./binderfs" [pid 5640] umount2("./23/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5766] <... symlink resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5766] write(1, "executing program\n", 18 [pid 5640] newfstatat(AT_FDCWD, "./23/binderfs" [pid 5766] <... write resumed>) = 18 executing program [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5766] memfd_create("syzkaller", 0 [pid 5640] unlink("./23/binderfs" [pid 5767] <... symlink resumed>) = 0 [pid 5766] <... memfd_create resumed>) = 3 [pid 5640] <... unlink resumed>) = 0 [pid 5766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5767] write(1, "executing program\n", 18 [pid 5766] <... mmap resumed>) = 0x7fb9643a6000 [pid 5767] <... write resumed>) = 18 executing program [pid 5767] memfd_create("syzkaller", 0) = 3 [pid 5767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./23/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./23/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5764] <... write resumed>) = 16777216 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5764] munmap(0x7fb9643a6000, 138412032 [pid 5640] openat(AT_FDCWD, "./23/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./23/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5764] <... munmap resumed>) = 0 [pid 5640] close(3) = 0 [pid 5764] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] rmdir("./23" [pid 5764] <... openat resumed>) = 4 [pid 5640] <... rmdir resumed>) = 0 [pid 5764] ioctl(4, LOOP_SET_FD, 3 [pid 5640] mkdir("./24", 0777 [pid 5764] <... ioctl resumed>) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5764] close(3) = 0 [pid 5764] close(4) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5764] mkdir("./bus", 0777) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5764] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5768 attached , child_tidptr=0x55555d1b46d0) = 5768 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5768] set_robust_list(0x55555d1b46e0, 24 [pid 5764] <... mount resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5768] <... set_robust_list resumed>) = 0 [pid 5768] rt_sigprocmask(SIG_SETMASK, [] [pid 5764] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5768] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5764] <... openat resumed>) = 3 [pid 5764] chdir("./bus") = 0 [pid 5764] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5768] chdir("./24") = 0 [pid 5764] exit_group(0 [pid 5768] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5764] <... exit_group resumed>) = ? [pid 5768] <... prctl resumed>) = 0 [pid 5768] setpgid(0, 0) = 0 [pid 5768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5764] +++ exited with 0 +++ [pid 5768] <... openat resumed>) = 3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5764, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=31 /* 0.31 s */} --- [pid 5768] write(3, "1000", 4) = 4 [pid 5768] close(3) = 0 [pid 5768] symlink("/dev/binderfs", "./binderfs" [pid 5638] umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5768] <... symlink resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5768] write(1, "executing program\n", 18 [pid 5638] <... openat resumed>) = 3 executing program [pid 5768] <... write resumed>) = 18 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3 [pid 5768] memfd_create("syzkaller", 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5768] <... memfd_create resumed>) = 3 [pid 5638] umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./24/binderfs" [pid 5768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5768] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] unlink("./24/binderfs") = 0 [pid 5638] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5765] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5766] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./24/bus") = 0 [pid 5767] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./24") = 0 [pid 5638] mkdir("./25", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5769 attached , child_tidptr=0x55555d1b46d0) = 5769 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5769] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5769] <... set_robust_list resumed>) = 0 [pid 5769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5769] chdir("./25") = 0 [pid 5769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5769] setpgid(0, 0) = 0 [pid 5769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5769] write(3, "1000", 4) = 4 [pid 5769] close(3) = 0 [pid 5769] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5769] write(1, "executing program\n", 18) = 18 executing program [pid 5769] memfd_create("syzkaller", 0) = 3 [pid 5769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5768] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5766] <... write resumed>) = 16777216 [pid 5766] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5766] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5766] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5766] close(3) = 0 [pid 5766] close(4) = 0 [pid 5766] mkdir("./bus", 0777) = 0 [ 248.910387][ T5766] set_capacity_and_notify: 5 callbacks suppressed [ 248.910410][ T5766] loop1: detected capacity change from 0 to 32768 [pid 5766] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5766] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5766] chdir("./bus") = 0 [pid 5766] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5766] exit_group(0) = ? [pid 5766] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5766, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5636] umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./25/binderfs") = 0 [pid 5636] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5765] <... write resumed>) = 16777216 [pid 5765] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5765] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5636] <... umount2 resumed>) = 0 [pid 5765] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5636] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5765] close(3) = 0 [pid 5765] close(4) = 0 [pid 5636] newfstatat(AT_FDCWD, "./25/bus" [pid 5765] mkdir("./bus", 0777 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4 [pid 5765] <... mkdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5767] <... write resumed>) = 16777216 [pid 5765] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5767] munmap(0x7fb9643a6000, 138412032 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./25/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [ 249.126995][ T5765] loop0: detected capacity change from 0 to 32768 [pid 5636] close(3) = 0 [pid 5636] rmdir("./25") = 0 [pid 5636] mkdir("./26", 0777 [pid 5767] <... munmap resumed>) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5767] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5767] <... openat resumed>) = 4 [pid 5636] <... openat resumed>) = 3 [pid 5767] ioctl(4, LOOP_SET_FD, 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5767] <... ioctl resumed>) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3 [pid 5767] close(3 [pid 5765] <... mount resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5767] <... close resumed>) = 0 [pid 5767] close(4 [pid 5765] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5765] chdir("./bus" [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5765] <... chdir resumed>) = 0 [pid 5765] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5765] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5765] exit_group(0) = ? ci2-upstream-fs/strace-static-x86_64: Process 5770 attached [pid 5767] <... close resumed>) = 0 [pid 5767] mkdir("./bus", 0777 [pid 5770] set_robust_list(0x55555d1b46e0, 24 [pid 5767] <... mkdir resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5770 [pid 5770] <... set_robust_list resumed>) = 0 [pid 5765] +++ exited with 0 +++ [pid 5770] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5770] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5765, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=22 /* 0.22 s */} --- [pid 5770] chdir("./26" [pid 5767] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5770] <... chdir resumed>) = 0 [pid 5634] umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5770] setpgid(0, 0) = 0 [pid 5634] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [ 249.229143][ T5767] loop2: detected capacity change from 0 to 32768 [pid 5634] fstat(3 [pid 5770] <... openat resumed>) = 3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5770] write(3, "1000", 4 [pid 5634] umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5770] <... write resumed>) = 4 [pid 5770] close(3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5770] <... close resumed>) = 0 [pid 5770] symlink("/dev/binderfs", "./binderfs" [pid 5634] newfstatat(AT_FDCWD, "./24/binderfs" [pid 5770] <... symlink resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./24/binderfs") = 0 [pid 5770] write(1, "executing program\n", 18) = 18 executing program [pid 5634] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5770] memfd_create("syzkaller", 0) = 3 [pid 5770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5767] <... mount resumed>) = 0 [pid 5770] <... mmap resumed>) = 0x7fb9643a6000 [pid 5767] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5767] chdir("./bus") = 0 [pid 5767] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5767] exit_group(0) = ? [pid 5767] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5767, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=32 /* 0.32 s */} --- [pid 5637] umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./25/binderfs") = 0 [pid 5637] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./24/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./24/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./24") = 0 [pid 5634] mkdir("./25", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5768] <... write resumed>) = 16777216 [pid 5634] <... ioctl resumed>) = 0 [pid 5768] munmap(0x7fb9643a6000, 138412032 [pid 5634] close(3) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./25/bus" [pid 5769] <... write resumed>) = 16777216 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5771 attached [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5771 [pid 5637] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5771] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5771] <... set_robust_list resumed>) = 0 [pid 5769] munmap(0x7fb9643a6000, 138412032 [pid 5637] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5771] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... openat resumed>) = 4 [pid 5771] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] fstat(4 [pid 5771] chdir("./25" [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5771] <... chdir resumed>) = 0 [pid 5637] getdents64(4 [pid 5771] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5769] <... munmap resumed>) = 0 [pid 5768] <... munmap resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5771] <... prctl resumed>) = 0 [pid 5637] getdents64(4 [pid 5771] setpgid(0, 0 [pid 5769] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5768] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5771] <... setpgid resumed>) = 0 [pid 5769] <... openat resumed>) = 4 [pid 5768] <... openat resumed>) = 4 [pid 5637] close(4 [pid 5771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5769] ioctl(4, LOOP_SET_FD, 3 [pid 5768] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... close resumed>) = 0 [pid 5771] write(3, "1000", 4 [pid 5769] <... ioctl resumed>) = 0 [pid 5637] rmdir("./25/bus" [pid 5771] <... write resumed>) = 4 [pid 5771] close(3 [pid 5768] <... ioctl resumed>) = 0 [pid 5771] <... close resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5768] close(3) = 0 [pid 5771] symlink("/dev/binderfs", "./binderfs" [pid 5768] close(4 [pid 5771] <... symlink resumed>) = 0 [pid 5769] close(3 [pid 5768] <... close resumed>) = 0 [pid 5637] getdents64(3 [pid 5769] <... close resumed>) = 0 [pid 5768] mkdir("./bus", 0777 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5769] close(4 [pid 5771] write(1, "executing program\n", 18 [pid 5769] <... close resumed>) = 0 [pid 5637] close(3 [pid 5771] <... write resumed>) = 18 [pid 5769] mkdir("./bus", 0777 [pid 5637] <... close resumed>) = 0 executing program [pid 5771] memfd_create("syzkaller", 0 [pid 5637] rmdir("./25" [pid 5769] <... mkdir resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5771] <... memfd_create resumed>) = 3 [pid 5771] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5769] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] mkdir("./26", 0777 [pid 5771] <... mmap resumed>) = 0x7fb9643a6000 [pid 5637] <... mkdir resumed>) = 0 [pid 5768] <... mkdir resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5768] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... openat resumed>) = 3 [ 249.513608][ T5769] loop3: detected capacity change from 0 to 32768 [ 249.515623][ T5768] loop4: detected capacity change from 0 to 32768 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5772 attached , child_tidptr=0x55555d1b46d0) = 5772 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5772] set_robust_list(0x55555d1b46e0, 24 [pid 5769] <... mount resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5772] <... set_robust_list resumed>) = 0 [pid 5769] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5772] rt_sigprocmask(SIG_SETMASK, [] [pid 5769] <... openat resumed>) = 3 [pid 5772] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5769] chdir("./bus" [pid 5772] chdir("./26") = 0 [pid 5769] <... chdir resumed>) = 0 [pid 5772] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5769] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5772] <... prctl resumed>) = 0 [pid 5769] exit_group(0 [pid 5768] <... mount resumed>) = 0 [pid 5772] setpgid(0, 0 [pid 5769] <... exit_group resumed>) = ? [pid 5768] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5772] <... setpgid resumed>) = 0 [pid 5768] <... openat resumed>) = 3 [pid 5772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5768] chdir("./bus" [pid 5772] write(3, "1000", 4 [pid 5769] +++ exited with 0 +++ [pid 5768] <... chdir resumed>) = 0 [pid 5772] <... write resumed>) = 4 [pid 5768] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5772] close(3 [pid 5768] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5772] <... close resumed>) = 0 [pid 5768] exit_group(0 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5769, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=25 /* 0.25 s */} --- [pid 5772] symlink("/dev/binderfs", "./binderfs" [pid 5768] <... exit_group resumed>) = ? [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5772] <... symlink resumed>) = 0 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5772] write(1, "executing program\n", 18) = 18 executing program [pid 5772] memfd_create("syzkaller", 0 [pid 5768] +++ exited with 0 +++ [pid 5638] umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5772] <... memfd_create resumed>) = 3 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5768, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=20 /* 0.20 s */} --- [pid 5638] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5638] <... openat resumed>) = 3 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3 [pid 5640] umount2("./24", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... openat resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] fstat(3 [pid 5638] newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] unlink("./25/binderfs" [pid 5640] getdents64(3 [pid 5638] <... unlink resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./24/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./24/binderfs" [pid 5638] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./24/binderfs") = 0 [pid 5640] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5640] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./25/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] newfstatat(AT_FDCWD, "./24/bus" [pid 5638] <... openat resumed>) = 4 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./24/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] fstat(4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] openat(AT_FDCWD, "./24/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] getdents64(4 [pid 5640] <... openat resumed>) = 4 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./25/bus" [pid 5640] fstat(4 [pid 5638] <... rmdir resumed>) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5638] getdents64(3 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] getdents64(4 [pid 5638] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./25" [pid 5640] close(4) = 0 [pid 5640] rmdir("./24/bus") = 0 [pid 5770] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./24" [pid 5638] <... rmdir resumed>) = 0 [pid 5638] mkdir("./26", 0777 [pid 5640] <... rmdir resumed>) = 0 [pid 5640] mkdir("./25", 0777 [pid 5638] <... mkdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... mkdir resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5773 attached [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5773] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... openat resumed>) = 3 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5773 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5773] <... set_robust_list resumed>) = 0 [pid 5640] <... ioctl resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5773] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] close(3) = 0 [pid 5773] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5773] chdir("./26" [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5773] <... chdir resumed>) = 0 [pid 5773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5773] setpgid(0, 0) = 0 [pid 5773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECci2-upstream-fs/strace-static-x86_64: Process 5774 attached ) = 3 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5774 [pid 5774] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5773] write(3, "1000", 4) = 4 [pid 5774] <... set_robust_list resumed>) = 0 [pid 5774] rt_sigprocmask(SIG_SETMASK, [] [pid 5773] close(3 [pid 5774] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5773] <... close resumed>) = 0 [pid 5773] symlink("/dev/binderfs", "./binderfs" [pid 5774] chdir("./25") = 0 [pid 5773] <... symlink resumed>) = 0 [pid 5773] write(1, "executing program\n", 18) = 18 executing program [pid 5774] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5773] memfd_create("syzkaller", 0 [pid 5774] <... prctl resumed>) = 0 [pid 5774] setpgid(0, 0 [pid 5773] <... memfd_create resumed>) = 3 [pid 5774] <... setpgid resumed>) = 0 [pid 5773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5773] <... mmap resumed>) = 0x7fb9643a6000 [pid 5774] <... openat resumed>) = 3 [pid 5774] write(3, "1000", 4) = 4 [pid 5774] close(3) = 0 [pid 5774] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5774] write(1, "executing program\n", 18) = 18 [pid 5771] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5774] memfd_create("syzkaller", 0) = 3 [pid 5774] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5772] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5774] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5770] <... write resumed>) = 16777216 [pid 5770] munmap(0x7fb9643a6000, 138412032 [pid 5771] <... write resumed>) = 16777216 [pid 5770] <... munmap resumed>) = 0 [pid 5771] munmap(0x7fb9643a6000, 138412032 [pid 5770] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5770] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5770] close(3) = 0 [pid 5770] close(4) = 0 [pid 5770] mkdir("./bus", 0777) = 0 [pid 5770] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5771] <... munmap resumed>) = 0 [pid 5771] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5771] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5771] close(3) = 0 [ 250.980561][ T5770] loop1: detected capacity change from 0 to 32768 [pid 5771] close(4) = 0 [pid 5771] mkdir("./bus", 0777) = 0 [pid 5771] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5770] <... mount resumed>) = 0 [pid 5770] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5770] chdir("./bus") = 0 [pid 5770] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5770] exit_group(0) = ? [pid 5770] +++ exited with 0 +++ [ 251.021605][ T5771] loop0: detected capacity change from 0 to 32768 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5770, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=30 /* 0.30 s */} --- [pid 5771] <... mount resumed>) = 0 [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5771] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... restart_syscall resumed>) = 0 [pid 5771] <... openat resumed>) = 3 [pid 5771] chdir("./bus" [pid 5636] umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5771] <... chdir resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5771] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5771] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5636] <... openat resumed>) = 3 [pid 5771] exit_group(0 [pid 5636] fstat(3 [pid 5771] <... exit_group resumed>) = ? [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5771] +++ exited with 0 +++ [pid 5636] umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5771, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=30 /* 0.30 s */} --- [pid 5636] newfstatat(AT_FDCWD, "./26/binderfs" [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./26/binderfs" [pid 5634] <... restart_syscall resumed>) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5636] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./25/binderfs") = 0 [pid 5634] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5772] <... write resumed>) = 16777216 [pid 5772] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... umount2 resumed>) = 0 [pid 5772] <... munmap resumed>) = 0 [pid 5772] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5772] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5634] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./25/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5772] close(3 [pid 5634] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5772] <... close resumed>) = 0 [pid 5772] close(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5772] <... close resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5772] mkdir("./bus", 0777 [pid 5636] <... umount2 resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5772] <... mkdir resumed>) = 0 [pid 5773] <... write resumed>) = 16777216 [pid 5636] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] fstat(4 [pid 5772] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5773] munmap(0x7fb9643a6000, 138412032 [pid 5636] newfstatat(AT_FDCWD, "./26/bus" [pid 5634] getdents64(4 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [ 251.199576][ T5772] loop2: detected capacity change from 0 to 32768 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./26/bus" [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./25/bus") = 0 [pid 5773] <... munmap resumed>) = 0 [pid 5634] getdents64(3 [pid 5773] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... rmdir resumed>) = 0 [pid 5773] <... openat resumed>) = 4 [pid 5636] getdents64(3 [pid 5634] close(3 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5773] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... close resumed>) = 0 [pid 5773] <... ioctl resumed>) = 0 [pid 5634] rmdir("./25" [pid 5636] close(3) = 0 [pid 5773] close(3 [pid 5772] <... mount resumed>) = 0 [pid 5636] rmdir("./26" [pid 5773] <... close resumed>) = 0 [pid 5772] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5773] close(4 [pid 5772] <... openat resumed>) = 3 [pid 5774] <... write resumed>) = 16777216 [pid 5773] <... close resumed>) = 0 [pid 5772] chdir("./bus" [pid 5636] <... rmdir resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5772] <... chdir resumed>) = 0 [pid 5636] mkdir("./27", 0777 [pid 5634] mkdir("./26", 0777 [pid 5774] munmap(0x7fb9643a6000, 138412032 [pid 5773] mkdir("./bus", 0777 [pid 5636] <... mkdir resumed>) = 0 [pid 5634] <... mkdir resumed>) = 0 [pid 5772] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5773] <... mkdir resumed>) = 0 [pid 5772] exit_group(0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5772] <... exit_group resumed>) = ? [pid 5636] <... openat resumed>) = 3 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5773] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] <... openat resumed>) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5772] +++ exited with 0 +++ [pid 5636] close(3 [pid 5634] close(3 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5772, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5636] <... close resumed>) = 0 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] <... close resumed>) = 0 [pid 5774] <... munmap resumed>) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... restart_syscall resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5775 attached [ 251.296288][ T5773] loop3: detected capacity change from 0 to 32768 [pid 5774] openat(AT_FDCWD, "/dev/loop4", O_RDWRci2-upstream-fs/strace-static-x86_64: Process 5776 attached [pid 5775] set_robust_list(0x55555d1b46e0, 24 [pid 5774] <... openat resumed>) = 4 [pid 5637] umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5775 [pid 5776] set_robust_list(0x55555d1b46e0, 24 [pid 5774] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5776] <... set_robust_list resumed>) = 0 [pid 5775] <... set_robust_list resumed>) = 0 [pid 5774] <... ioctl resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5776 [pid 5776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5775] rt_sigprocmask(SIG_SETMASK, [] [pid 5774] close(3 [pid 5637] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5776] chdir("./26" [pid 5775] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5774] <... close resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5776] <... chdir resumed>) = 0 [pid 5775] chdir("./27" [pid 5774] close(4 [pid 5773] <... mount resumed>) = 0 [pid 5637] fstat(3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5776] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5775] <... chdir resumed>) = 0 [pid 5774] <... close resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5776] <... prctl resumed>) = 0 [pid 5775] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5774] mkdir("./bus", 0777 [pid 5773] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] getdents64(3 [pid 5776] setpgid(0, 0 [pid 5775] <... prctl resumed>) = 0 [pid 5773] <... openat resumed>) = 3 [pid 5776] <... setpgid resumed>) = 0 [pid 5775] setpgid(0, 0 [pid 5774] <... mkdir resumed>) = 0 [pid 5773] chdir("./bus" [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5775] <... setpgid resumed>) = 0 [pid 5774] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5776] <... openat resumed>) = 3 [pid 5775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5773] <... chdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5776] write(3, "1000", 4 [pid 5775] <... openat resumed>) = 3 [pid 5773] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] newfstatat(AT_FDCWD, "./26/binderfs" [ 251.378187][ T5774] loop4: detected capacity change from 0 to 32768 [pid 5776] <... write resumed>) = 4 [pid 5775] write(3, "1000", 4 [pid 5773] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5773] exit_group(0 [pid 5637] unlink("./26/binderfs" [pid 5775] <... write resumed>) = 4 [pid 5773] <... exit_group resumed>) = ? [pid 5637] <... unlink resumed>) = 0 [pid 5776] close(3 [pid 5775] close(3 [pid 5776] <... close resumed>) = 0 [pid 5637] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5776] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5775] <... close resumed>) = 0 [pid 5775] symlink("/dev/binderfs", "./binderfs" [pid 5776] write(1, "executing program\n", 18 executing program [pid 5775] <... symlink resumed>) = 0 [pid 5773] +++ exited with 0 +++ [pid 5776] <... write resumed>) = 18 [pid 5775] write(1, "executing program\n", 18 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5773, si_uid=0, si_status=0, si_utime=0, si_stime=36 /* 0.36 s */} --- [pid 5775] <... write resumed>) = 18 executing program [pid 5776] memfd_create("syzkaller", 0 [pid 5775] memfd_create("syzkaller", 0 [pid 5774] <... mount resumed>) = 0 [pid 5776] <... memfd_create resumed>) = 3 [pid 5774] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5776] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5774] chdir("./bus" [pid 5776] <... mmap resumed>) = 0x7fb9643a6000 [pid 5774] <... chdir resumed>) = 0 [pid 5638] umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5775] <... memfd_create resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5774] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5775] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] <... openat resumed>) = 3 [pid 5638] fstat(3 [pid 5774] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5774] exit_group(0) = ? [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5774] +++ exited with 0 +++ [pid 5637] <... umount2 resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5774, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5638] newfstatat(AT_FDCWD, "./26/binderfs" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./26/bus" [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5638] unlink("./26/binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... unlink resumed>) = 0 [pid 5637] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] umount2("./25", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... openat resumed>) = 4 [pid 5640] <... openat resumed>) = 3 [pid 5637] fstat(4 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3 [pid 5637] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] umount2("./25/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] newfstatat(AT_FDCWD, "./25/binderfs" [pid 5637] close(4 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... close resumed>) = 0 [pid 5640] unlink("./25/binderfs" [pid 5637] rmdir("./26/bus" [pid 5640] <... unlink resumed>) = 0 [pid 5640] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... rmdir resumed>) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./26") = 0 [pid 5637] mkdir("./27", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] <... umount2 resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5777 attached [pid 5638] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./26/bus" [pid 5777] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5777 [pid 5777] <... set_robust_list resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5777] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... umount2 resumed>) = 0 [pid 5638] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./25/bus" [pid 5777] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5777] chdir("./27" [pid 5640] umount2("./25/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... openat resumed>) = 4 [pid 5777] <... chdir resumed>) = 0 [pid 5638] fstat(4 [pid 5777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5777] setpgid(0, 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5777] <... setpgid resumed>) = 0 [pid 5638] getdents64(4 [pid 5640] openat(AT_FDCWD, "./25/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] fstat(4 [pid 5638] getdents64(4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5777] <... openat resumed>) = 3 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] getdents64(4 [pid 5638] close(4 [pid 5777] write(3, "1000", 4) = 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5777] close(3 [pid 5638] <... close resumed>) = 0 [pid 5777] <... close resumed>) = 0 [pid 5640] getdents64(4 [pid 5638] rmdir("./26/bus" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5777] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... rmdir resumed>) = 0 [pid 5777] <... symlink resumed>) = 0 [pid 5640] rmdir("./25/bus" [pid 5777] write(1, "executing program\n", 18 [pid 5640] <... rmdir resumed>) = 0 executing program [pid 5638] getdents64(3 [pid 5777] <... write resumed>) = 18 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5777] memfd_create("syzkaller", 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... close resumed>) = 0 [pid 5777] <... memfd_create resumed>) = 3 [pid 5640] close(3 [pid 5638] rmdir("./26" [pid 5777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... close resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5640] rmdir("./25" [pid 5777] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... rmdir resumed>) = 0 [pid 5638] mkdir("./27", 0777 [pid 5640] mkdir("./26", 0777 [pid 5638] <... mkdir resumed>) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5640] <... openat resumed>) = 3 [pid 5638] <... ioctl resumed>) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5638] close(3 [pid 5640] <... close resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5778 attached ci2-upstream-fs/strace-static-x86_64: Process 5779 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5778 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5779 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5779] set_robust_list(0x55555d1b46e0, 24 [pid 5778] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5778] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5779] <... set_robust_list resumed>) = 0 [pid 5778] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5779] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5778] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5779] chdir("./26" [pid 5778] chdir("./27" [pid 5779] <... chdir resumed>) = 0 [pid 5778] <... chdir resumed>) = 0 [pid 5779] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5778] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5779] <... prctl resumed>) = 0 [pid 5778] <... prctl resumed>) = 0 [pid 5779] setpgid(0, 0 [pid 5778] setpgid(0, 0 [pid 5779] <... setpgid resumed>) = 0 [pid 5778] <... setpgid resumed>) = 0 [pid 5779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5779] write(3, "1000", 4 [pid 5778] <... openat resumed>) = 3 [pid 5779] <... write resumed>) = 4 [pid 5779] close(3) = 0 [pid 5778] write(3, "1000", 4 [pid 5779] symlink("/dev/binderfs", "./binderfs" [pid 5778] <... write resumed>) = 4 [pid 5779] <... symlink resumed>) = 0 [pid 5778] close(3) = 0 [pid 5779] write(1, "executing program\n", 18 [pid 5778] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5779] <... write resumed>) = 18 executing program [pid 5779] memfd_create("syzkaller", 0 executing program [pid 5778] write(1, "executing program\n", 18 [pid 5779] <... memfd_create resumed>) = 3 [pid 5778] <... write resumed>) = 18 [pid 5779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5778] memfd_create("syzkaller", 0 [pid 5779] <... mmap resumed>) = 0x7fb9643a6000 [pid 5778] <... memfd_create resumed>) = 3 [pid 5778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5776] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5777] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5778] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5776] <... write resumed>) = 16777216 [pid 5776] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5776] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5776] close(3) = 0 [pid 5776] close(4) = 0 [pid 5776] mkdir("./bus", 0777) = 0 [pid 5776] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5776] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5776] chdir("./bus") = 0 [pid 5776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5776] exit_group(0) = ? [pid 5776] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5776, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./26/binderfs") = 0 [pid 5634] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5775] <... write resumed>) = 16777216 [pid 5775] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./26/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5775] <... munmap resumed>) = 0 [pid 5634] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5775] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5775] <... openat resumed>) = 4 [pid 5775] ioctl(4, LOOP_SET_FD, 3 [pid 5778] <... write resumed>) = 16777216 [pid 5778] munmap(0x7fb9643a6000, 138412032 [pid 5775] <... ioctl resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5775] close(3 [pid 5634] fstat(4 [pid 5775] <... close resumed>) = 0 [pid 5775] close(4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5775] <... close resumed>) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5775] mkdir("./bus", 0777 [pid 5634] getdents64(4 [pid 5775] <... mkdir resumed>) = 0 [pid 5775] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5778] <... munmap resumed>) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./26/bus" [pid 5778] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] <... rmdir resumed>) = 0 [pid 5778] <... openat resumed>) = 4 [pid 5778] ioctl(4, LOOP_SET_FD, 3 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./26") = 0 [pid 5634] mkdir("./27", 0777 [pid 5778] <... ioctl resumed>) = 0 [pid 5634] <... mkdir resumed>) = 0 [pid 5778] close(3) = 0 [pid 5778] close(4 [pid 5775] <... mount resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5778] <... close resumed>) = 0 [pid 5775] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5778] mkdir("./bus", 0777 [pid 5775] <... openat resumed>) = 3 [pid 5634] <... openat resumed>) = 3 [pid 5775] chdir("./bus" [pid 5777] <... write resumed>) = 16777216 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5777] munmap(0x7fb9643a6000, 138412032 [pid 5775] <... chdir resumed>) = 0 [pid 5775] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] <... ioctl resumed>) = 0 [pid 5775] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] close(3 [pid 5775] exit_group(0 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5778] <... mkdir resumed>) = 0 [pid 5775] <... exit_group resumed>) = ? [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5778] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5775] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5775, si_uid=0, si_status=0, si_utime=0, si_stime=37 /* 0.37 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5777] <... munmap resumed>) = 0 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5777] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5780 [pid 5634] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5780 attached [pid 5777] <... openat resumed>) = 4 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5780] set_robust_list(0x55555d1b46e0, 24 [pid 5777] ioctl(4, LOOP_SET_FD, 3 [pid 5780] <... set_robust_list resumed>) = 0 [pid 5780] rt_sigprocmask(SIG_SETMASK, [] [pid 5777] <... ioctl resumed>) = 0 [pid 5636] umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5780] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5778] <... mount resumed>) = 0 [pid 5780] chdir("./27" [pid 5778] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5777] close(3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5778] <... openat resumed>) = 3 [pid 5780] <... chdir resumed>) = 0 [pid 5779] <... write resumed>) = 16777216 [pid 5778] chdir("./bus" [pid 5777] <... close resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5780] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5779] munmap(0x7fb9643a6000, 138412032 [pid 5778] <... chdir resumed>) = 0 [pid 5777] close(4 [pid 5636] <... openat resumed>) = 3 [pid 5780] <... prctl resumed>) = 0 [pid 5778] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5777] <... close resumed>) = 0 [pid 5780] setpgid(0, 0 [pid 5778] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5777] mkdir("./bus", 0777 [pid 5636] fstat(3 [pid 5780] <... setpgid resumed>) = 0 [pid 5778] exit_group(0 [pid 5777] <... mkdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5778] <... exit_group resumed>) = ? [pid 5777] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5780] <... openat resumed>) = 3 [pid 5636] getdents64(3 [pid 5780] write(3, "1000", 4 [pid 5779] <... munmap resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5780] <... write resumed>) = 4 [pid 5779] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5780] close(3 [pid 5779] <... openat resumed>) = 4 [pid 5778] +++ exited with 0 +++ [pid 5780] <... close resumed>) = 0 [pid 5779] ioctl(4, LOOP_SET_FD, 3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5778, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=33 /* 0.33 s */} --- [pid 5636] umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5780] symlink("/dev/binderfs", "./binderfs" [pid 5779] <... ioctl resumed>) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5780] <... symlink resumed>) = 0 [pid 5780] write(1, "executing program\n", 18 [pid 5638] <... restart_syscall resumed>) = 0 executing program [pid 5636] newfstatat(AT_FDCWD, "./27/binderfs" [pid 5780] <... write resumed>) = 18 [pid 5779] close(3 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5780] memfd_create("syzkaller", 0 [pid 5779] <... close resumed>) = 0 [pid 5779] close(4) = 0 [pid 5638] umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] unlink("./27/binderfs" [pid 5780] <... memfd_create resumed>) = 3 [pid 5777] <... mount resumed>) = 0 [pid 5779] mkdir("./bus", 0777 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5779] <... mkdir resumed>) = 0 [pid 5780] <... mmap resumed>) = 0x7fb9643a6000 [pid 5777] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... openat resumed>) = 3 [pid 5638] fstat(3 [pid 5777] <... openat resumed>) = 3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5777] chdir("./bus") = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5636] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] getdents64(3 [pid 5777] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5779] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5777] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5777] exit_group(0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5777] <... exit_group resumed>) = ? [pid 5638] unlink("./27/binderfs") = 0 [pid 5638] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5777] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5777, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=26 /* 0.26 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5779] <... mount resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5779] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5779] <... openat resumed>) = 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5779] chdir("./bus" [pid 5637] newfstatat(AT_FDCWD, "./27/binderfs" [pid 5779] <... chdir resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./27/binderfs") = 0 [pid 5779] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5779] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5779] exit_group(0) = ? [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5779] +++ exited with 0 +++ [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./27/bus" [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5779, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=37 /* 0.37 s */} --- [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... restart_syscall resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] umount2("./26", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] newfstatat(AT_FDCWD, "./27/bus" [pid 5636] <... openat resumed>) = 4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] fstat(4 [pid 5640] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... openat resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] getdents64(4 [pid 5640] fstat(3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5636] getdents64(4 [pid 5640] getdents64(3 [pid 5638] fstat(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] close(4 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] getdents64(4 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./27/bus" [pid 5640] umount2("./26/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... rmdir resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] newfstatat(AT_FDCWD, "./26/binderfs" [pid 5636] getdents64(3 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] close(4 [pid 5640] unlink("./26/binderfs" [pid 5638] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] rmdir("./27/bus" [pid 5640] <... unlink resumed>) = 0 [pid 5636] close(3 [pid 5640] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./27" [pid 5637] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... rmdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./27/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] mkdir("./28", 0777 [pid 5638] <... rmdir resumed>) = 0 [pid 5637] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... mkdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] getdents64(3 [pid 5637] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5638] close(3 [pid 5637] getdents64(4 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./27" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... ioctl resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5637] getdents64(4 [pid 5636] close(3 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... close resumed>) = 0 [pid 5637] close(4 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... close resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] rmdir("./27/bus" [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] mkdir("./28", 0777) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./27" [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5781 ci2-upstream-fs/strace-static-x86_64: Process 5781 attached [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5781] set_robust_list(0x55555d1b46e0, 24 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5781] <... set_robust_list resumed>) = 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5781] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] close(3 [pid 5637] mkdir("./28", 0777 [pid 5781] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... close resumed>) = 0 [pid 5781] chdir("./28" [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... mkdir resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5781] <... chdir resumed>) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5781] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... openat resumed>) = 3 [pid 5781] <... prctl resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5781] setpgid(0, 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5781] <... setpgid resumed>) = 0 [pid 5637] close(3) = 0 [pid 5781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[]ci2-upstream-fs/strace-static-x86_64: Process 5782 attached [pid 5781] <... openat resumed>) = 3 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5781] write(3, "1000", 4 [pid 5640] <... umount2 resumed>) = 0 [pid 5781] <... write resumed>) = 4 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5782] set_robust_list(0x55555d1b46e0, 24 [pid 5781] close(3 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5782 [pid 5782] <... set_robust_list resumed>) = 0 [pid 5781] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5782] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) ci2-upstream-fs/strace-static-x86_64: Process 5783 attached [pid 5782] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5781] symlink("/dev/binderfs", "./binderfs" [pid 5640] newfstatat(AT_FDCWD, "./26/bus" [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5783] set_robust_list(0x55555d1b46e0, 24 [pid 5782] chdir("./28" [pid 5781] <... symlink resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5783] <... set_robust_list resumed>) = 0 [pid 5640] umount2("./26/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5783 [pid 5783] rt_sigprocmask(SIG_SETMASK, [] [pid 5782] <... chdir resumed>) = 0 [pid 5781] write(1, "executing program\n", 18 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5783] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 5781] <... write resumed>) = 18 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5783] chdir("./28" [pid 5782] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] openat(AT_FDCWD, "./26/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5783] <... chdir resumed>) = 0 [pid 5782] <... prctl resumed>) = 0 [pid 5781] memfd_create("syzkaller", 0 [pid 5640] <... openat resumed>) = 4 [pid 5783] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5782] setpgid(0, 0 [pid 5640] fstat(4 [pid 5782] <... setpgid resumed>) = 0 [pid 5781] <... memfd_create resumed>) = 3 [pid 5783] <... prctl resumed>) = 0 [pid 5782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5783] setpgid(0, 0 [pid 5781] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] getdents64(4 [pid 5783] <... setpgid resumed>) = 0 [pid 5782] <... openat resumed>) = 3 [pid 5783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5783] <... openat resumed>) = 3 [pid 5640] getdents64(4 [pid 5782] write(3, "1000", 4 [pid 5783] write(3, "1000", 4 [pid 5782] <... write resumed>) = 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5782] close(3 [pid 5640] close(4 [pid 5783] <... write resumed>) = 4 [pid 5640] <... close resumed>) = 0 [pid 5783] close(3 [pid 5782] <... close resumed>) = 0 [pid 5640] rmdir("./26/bus" [pid 5783] <... close resumed>) = 0 [pid 5782] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... rmdir resumed>) = 0 [pid 5783] symlink("/dev/binderfs", "./binderfs" [pid 5782] <... symlink resumed>) = 0 [pid 5640] getdents64(3 [pid 5783] <... symlink resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3 executing program [pid 5783] write(1, "executing program\n", 18 [pid 5782] write(1, "executing program\n", 18 [pid 5640] <... close resumed>) = 0 [pid 5783] <... write resumed>) = 18 executing program [pid 5782] <... write resumed>) = 18 [pid 5640] rmdir("./26" [pid 5783] memfd_create("syzkaller", 0 [pid 5782] memfd_create("syzkaller", 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5783] <... memfd_create resumed>) = 3 [pid 5782] <... memfd_create resumed>) = 3 [pid 5783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] mkdir("./27", 0777 [pid 5782] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5784 attached [pid 5784] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5784] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5784 [pid 5784] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5784] chdir("./27" [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5784] <... chdir resumed>) = 0 [pid 5784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5784] setpgid(0, 0) = 0 [pid 5784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5784] write(3, "1000", 4) = 4 [pid 5784] close(3) = 0 [pid 5784] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5784] write(1, "executing program\n", 18) = 18 [pid 5784] memfd_create("syzkaller", 0) = 3 [pid 5784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5780] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5782] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5784] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5780] <... write resumed>) = 16777216 [pid 5780] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5780] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5780] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5780] close(3) = 0 [pid 5780] close(4) = 0 [pid 5780] mkdir("./bus", 0777) = 0 [pid 5780] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5783] <... write resumed>) = 16777216 [ 254.817148][ T5780] set_capacity_and_notify: 5 callbacks suppressed [ 254.817169][ T5780] loop0: detected capacity change from 0 to 32768 [pid 5783] munmap(0x7fb9643a6000, 138412032 [pid 5780] <... mount resumed>) = 0 [pid 5780] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5780] chdir("./bus") = 0 [pid 5780] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5780] exit_group(0) = ? [pid 5783] <... munmap resumed>) = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5780] +++ exited with 0 +++ [pid 5783] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5780, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=34 /* 0.34 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5783] close(3) = 0 [pid 5783] close(4) = 0 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5783] mkdir("./bus", 0777 [pid 5634] umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5783] <... mkdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5783] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] <... openat resumed>) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 254.903553][ T5783] loop2: detected capacity change from 0 to 32768 [pid 5634] newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./27/binderfs") = 0 [pid 5634] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5784] <... write resumed>) = 16777216 [pid 5784] munmap(0x7fb9643a6000, 138412032 [pid 5783] <... mount resumed>) = 0 [pid 5783] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5783] chdir("./bus") = 0 [pid 5783] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5783] exit_group(0) = ? [pid 5781] <... write resumed>) = 16777216 [pid 5784] <... munmap resumed>) = 0 [pid 5783] +++ exited with 0 +++ [pid 5782] <... write resumed>) = 16777216 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5783, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=38 /* 0.38 s */} --- [pid 5782] munmap(0x7fb9643a6000, 138412032 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5784] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5784] ioctl(4, LOOP_SET_FD, 3 [pid 5781] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5784] <... ioctl resumed>) = 0 [pid 5784] close(3) = 0 [pid 5784] close(4) = 0 [pid 5637] umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5784] mkdir("./bus", 0777 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5784] <... mkdir resumed>) = 0 [pid 5784] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] newfstatat(AT_FDCWD, "./27/bus" [pid 5637] umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./28/binderfs") = 0 [pid 5637] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5781] <... munmap resumed>) = 0 [pid 5782] <... munmap resumed>) = 0 [pid 5634] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5781] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5782] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5781] <... openat resumed>) = 4 [pid 5784] <... mount resumed>) = 0 [pid 5782] <... openat resumed>) = 4 [pid 5781] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5784] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5781] <... ioctl resumed>) = 0 [pid 5784] <... openat resumed>) = 3 [ 255.016499][ T5784] loop4: detected capacity change from 0 to 32768 [pid 5782] ioctl(4, LOOP_SET_FD, 3 [pid 5634] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5784] chdir("./bus" [pid 5782] <... ioctl resumed>) = 0 [pid 5781] close(3) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5784] <... chdir resumed>) = 0 [pid 5782] close(3 [pid 5784] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5782] <... close resumed>) = 0 [pid 5781] close(4 [pid 5782] close(4 [pid 5634] fstat(4 [pid 5784] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5782] <... close resumed>) = 0 [pid 5781] <... close resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5784] exit_group(0 [pid 5782] mkdir("./bus", 0777 [pid 5781] mkdir("./bus", 0777 [pid 5784] <... exit_group resumed>) = ? [pid 5782] <... mkdir resumed>) = 0 [pid 5634] getdents64(4 [pid 5781] <... mkdir resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5782] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5784] +++ exited with 0 +++ [pid 5781] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] rmdir("./27/bus" [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5784, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=25 /* 0.25 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 255.075228][ T5781] loop1: detected capacity change from 0 to 32768 [ 255.080165][ T5782] loop3: detected capacity change from 0 to 32768 [pid 5634] <... rmdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] umount2("./27", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] close(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... close resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] rmdir("./27" [pid 5640] <... openat resumed>) = 3 [pid 5637] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... rmdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] fstat(3 [pid 5637] newfstatat(AT_FDCWD, "./28/bus" [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] getdents64(3 [pid 5782] <... mount resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] mkdir("./28", 0777 [pid 5782] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] umount2("./27/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... mkdir resumed>) = 0 [pid 5782] <... openat resumed>) = 3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] newfstatat(AT_FDCWD, "./27/binderfs" [pid 5637] <... openat resumed>) = 4 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5782] chdir("./bus" [pid 5781] <... mount resumed>) = 0 [pid 5637] fstat(4 [pid 5640] unlink("./27/binderfs" [pid 5781] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] <... unlink resumed>) = 0 [pid 5782] <... chdir resumed>) = 0 [pid 5781] <... openat resumed>) = 3 [pid 5640] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5637] getdents64(4 [pid 5782] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5781] chdir("./bus") = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5781] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5634] <... ioctl resumed>) = 0 [pid 5782] exit_group(0 [pid 5637] getdents64(4 [pid 5634] close(3 [pid 5781] exit_group(0) = ? [pid 5782] <... exit_group resumed>) = ? [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./28/bus") = 0 [pid 5781] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5781, si_uid=0, si_status=0, si_utime=0, si_stime=34 /* 0.34 s */} --- [pid 5637] getdents64(3 [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5782] +++ exited with 0 +++ [pid 5637] close(3) = 0 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5782, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=32 /* 0.32 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] <... restart_syscall resumed>) = 0 [pid 5637] rmdir("./28" [pid 5638] <... restart_syscall resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5637] mkdir("./29", 0777 [pid 5638] umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... mkdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... openat resumed>) = 3 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] <... openat resumed>) = 3 [pid 5638] fstat(3 [pid 5637] <... openat resumed>) = 3 [pid 5636] fstat(3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3 [pid 5637] <... ioctl resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] close(3 [pid 5636] getdents64(3 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./28/binderfs" [pid 5636] umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] unlink("./28/binderfs" [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] newfstatat(AT_FDCWD, "./28/binderfs" [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./27/bus" [pid 5638] <... unlink resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./28/binderfs" [pid 5640] umount2("./27/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... unlink resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./27/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORYci2-upstream-fs/strace-static-x86_64: Process 5785 attached ) = 4 [pid 5636] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5785 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] fstat(4 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4 [pid 5785] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... close resumed>) = 0 [pid 5640] rmdir("./27/bus" [pid 5785] <... set_robust_list resumed>) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5785] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] getdents64(3 [pid 5785] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5785] chdir("./29" [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3 [pid 5785] <... chdir resumed>) = 0 [pid 5785] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] <... close resumed>) = 0 [pid 5640] rmdir("./27") = 0 [pid 5785] <... prctl resumed>) = 0 [pid 5785] setpgid(0, 0) = 0 [pid 5640] mkdir("./28", 0777 [pid 5785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] <... mkdir resumed>) = 0 [pid 5785] <... openat resumed>) = 3 [pid 5785] write(3, "1000", 4) = 4 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5785] close(3 [pid 5640] <... openat resumed>) = 3 [pid 5785] <... close resumed>) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5785] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5640] <... ioctl resumed>) = 0 [pid 5640] close(3 [pid 5785] write(1, "executing program\n", 18 [pid 5640] <... close resumed>) = 0 [pid 5785] <... write resumed>) = 18 [pid 5785] memfd_create("syzkaller", 0 executing program [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5785] <... memfd_create resumed>) = 3 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5785] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 ci2-upstream-fs/strace-static-x86_64: Process 5786 attached [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5786 [pid 5638] <... umount2 resumed>) = 0 [pid 5636] <... umount2 resumed>) = 0 [pid 5786] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5786] <... set_robust_list resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] newfstatat(AT_FDCWD, "./28/bus" [pid 5786] chdir("./28" [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5786] <... chdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./28/bus" [pid 5786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5786] setpgid(0, 0) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5636] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] fstat(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5786] <... openat resumed>) = 3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4 [pid 5636] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5786] write(3, "1000", 4 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] <... openat resumed>) = 4 [pid 5786] <... write resumed>) = 4 [pid 5786] close(3 [pid 5638] getdents64(4 [pid 5636] fstat(4 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5786] <... close resumed>) = 0 [pid 5636] getdents64(4 [pid 5786] symlink("/dev/binderfs", "./binderfs" [pid 5638] close(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5786] <... symlink resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5636] getdents64(4 [pid 5786] write(1, "executing program\n", 18 executing program [pid 5638] rmdir("./28/bus" [pid 5786] <... write resumed>) = 18 [pid 5638] <... rmdir resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5786] memfd_create("syzkaller", 0 [pid 5636] close(4 [pid 5786] <... memfd_create resumed>) = 3 [pid 5638] getdents64(3 [pid 5636] <... close resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] rmdir("./28/bus" [pid 5638] close(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5786] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... close resumed>) = 0 [pid 5786] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] rmdir("./28") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./28") = 0 [pid 5638] mkdir("./29", 0777) = 0 [pid 5636] mkdir("./29", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5638] <... openat resumed>) = 3 [pid 5636] <... openat resumed>) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5636] <... ioctl resumed>) = 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5638] close(3 [pid 5636] close(3 [pid 5638] <... close resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5788 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5788 [pid 5788] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5787 attached [pid 5788] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5788] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5787 [pid 5787] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5787] <... set_robust_list resumed>) = 0 [pid 5788] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5787] rt_sigprocmask(SIG_SETMASK, [] [pid 5788] chdir("./29" [pid 5787] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5787] chdir("./29" [pid 5788] <... chdir resumed>) = 0 [pid 5788] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5787] <... chdir resumed>) = 0 [pid 5788] <... prctl resumed>) = 0 [pid 5787] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5788] setpgid(0, 0 [pid 5787] <... prctl resumed>) = 0 [pid 5788] <... setpgid resumed>) = 0 [pid 5787] setpgid(0, 0 [pid 5788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5787] <... setpgid resumed>) = 0 [pid 5787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5788] <... openat resumed>) = 3 [pid 5788] write(3, "1000", 4 [pid 5787] write(3, "1000", 4 [pid 5788] <... write resumed>) = 4 [pid 5787] <... write resumed>) = 4 [pid 5788] close(3) = 0 [pid 5787] close(3 [pid 5788] symlink("/dev/binderfs", "./binderfs" [pid 5787] <... close resumed>) = 0 [pid 5788] <... symlink resumed>) = 0 [pid 5787] symlink("/dev/binderfs", "./binderfs" [pid 5788] write(1, "executing program\n", 18 [pid 5787] <... symlink resumed>) = 0 [pid 5788] <... write resumed>) = 18 executing program [pid 5787] write(1, "executing program\n", 18 [pid 5788] memfd_create("syzkaller", 0 [pid 5787] <... write resumed>) = 18 executing program [pid 5787] memfd_create("syzkaller", 0 [pid 5788] <... memfd_create resumed>) = 3 [pid 5788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5787] <... memfd_create resumed>) = 3 [pid 5787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5785] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5786] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] <... close resumed>) = 0 [pid 5788] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5789 attached , child_tidptr=0x55555d1b46d0) = 5789 [pid 5789] set_robust_list(0x55555d1b46e0, 24 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5789] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5787] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5789] chdir("./28") = 0 [pid 5789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5789] setpgid(0, 0) = 0 [pid 5789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5789] write(3, "1000", 4) = 4 [pid 5789] close(3) = 0 [pid 5789] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5789] write(1, "executing program\n", 18) = 18 [pid 5789] memfd_create("syzkaller", 0) = 3 [pid 5789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [ 255.997653][ T1333] ieee802154 phy0 wpan0: encryption failed: -22 [ 255.997752][ T1333] ieee802154 phy1 wpan1: encryption failed: -22 [pid 5789] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5785] <... write resumed>) = 16777216 [pid 5785] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5785] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5785] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5785] close(3) = 0 [pid 5785] close(4) = 0 [pid 5785] mkdir("./bus", 0777) = 0 [pid 5785] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5785] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [ 256.782402][ T5785] loop2: detected capacity change from 0 to 32768 [pid 5788] <... write resumed>) = 16777216 [pid 5787] <... write resumed>) = 16777216 [pid 5786] <... write resumed>) = 16777216 [pid 5785] chdir("./bus") = 0 [pid 5785] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5787] munmap(0x7fb9643a6000, 138412032 [pid 5788] munmap(0x7fb9643a6000, 138412032 [pid 5785] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5789] <... write resumed>) = 16777216 [pid 5786] munmap(0x7fb9643a6000, 138412032 [pid 5785] exit_group(0 [pid 5789] munmap(0x7fb9643a6000, 138412032 [pid 5785] <... exit_group resumed>) = ? [pid 5787] <... munmap resumed>) = 0 [pid 5787] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5788] <... munmap resumed>) = 0 [pid 5785] +++ exited with 0 +++ [pid 5787] <... openat resumed>) = 4 [pid 5788] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5787] ioctl(4, LOOP_SET_FD, 3 [pid 5788] <... openat resumed>) = 4 [pid 5789] <... munmap resumed>) = 0 [pid 5787] <... ioctl resumed>) = 0 [pid 5788] ioctl(4, LOOP_SET_FD, 3 [pid 5786] <... munmap resumed>) = 0 [pid 5789] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5787] close(3 [pid 5788] <... ioctl resumed>) = 0 [pid 5786] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5785, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=25 /* 0.25 s */} --- [pid 5789] <... openat resumed>) = 4 [pid 5787] <... close resumed>) = 0 [pid 5788] close(3 [pid 5786] <... openat resumed>) = 4 [pid 5637] umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5789] ioctl(4, LOOP_SET_FD, 3 [pid 5787] close(4 [pid 5786] ioctl(4, LOOP_SET_FD, 3 [pid 5637] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5789] <... ioctl resumed>) = 0 [pid 5787] <... close resumed>) = 0 [pid 5788] <... close resumed>) = 0 [pid 5786] <... ioctl resumed>) = 0 [pid 5787] mkdir("./bus", 0777 [pid 5788] close(4 [pid 5637] <... openat resumed>) = 3 [pid 5787] <... mkdir resumed>) = 0 [pid 5788] <... close resumed>) = 0 [pid 5786] close(3 [pid 5789] close(3 [pid 5787] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5788] mkdir("./bus", 0777 [pid 5786] <... close resumed>) = 0 [pid 5637] fstat(3 [pid 5789] <... close resumed>) = 0 [pid 5788] <... mkdir resumed>) = 0 [pid 5786] close(4 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5789] close(4 [pid 5786] <... close resumed>) = 0 [pid 5789] <... close resumed>) = 0 [pid 5786] mkdir("./bus", 0777 [pid 5637] getdents64(3 [pid 5788] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5789] mkdir("./bus", 0777 [pid 5786] <... mkdir resumed>) = 0 [ 256.885064][ T5787] loop1: detected capacity change from 0 to 32768 [ 256.900276][ T5788] loop3: detected capacity change from 0 to 32768 [ 256.914408][ T5789] loop0: detected capacity change from 0 to 32768 [ 256.915426][ T5786] loop4: detected capacity change from 0 to 32768 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5789] <... mkdir resumed>) = 0 [pid 5786] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5789] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./29/binderfs") = 0 [pid 5637] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5787] <... mount resumed>) = 0 [pid 5787] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5786] <... mount resumed>) = 0 [pid 5788] <... mount resumed>) = 0 [pid 5786] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5789] <... mount resumed>) = 0 [pid 5787] <... openat resumed>) = 3 [pid 5788] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5786] <... openat resumed>) = 3 [pid 5789] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5787] chdir("./bus" [pid 5788] <... openat resumed>) = 3 [pid 5786] chdir("./bus" [pid 5789] <... openat resumed>) = 3 [pid 5787] <... chdir resumed>) = 0 [pid 5788] chdir("./bus" [pid 5786] <... chdir resumed>) = 0 [pid 5789] chdir("./bus") = 0 [pid 5786] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5789] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5787] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5788] <... chdir resumed>) = 0 [pid 5786] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5789] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5787] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5789] exit_group(0 [pid 5787] exit_group(0 [pid 5788] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5789] <... exit_group resumed>) = ? [pid 5786] exit_group(0 [pid 5788] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5786] <... exit_group resumed>) = ? [pid 5787] <... exit_group resumed>) = ? [pid 5788] exit_group(0) = ? [pid 5637] <... umount2 resumed>) = 0 [pid 5786] +++ exited with 0 +++ [pid 5789] +++ exited with 0 +++ [pid 5637] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5786, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=37 /* 0.37 s */} --- [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5789, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5787] +++ exited with 0 +++ [pid 5788] +++ exited with 0 +++ [pid 5637] newfstatat(AT_FDCWD, "./29/bus" [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5788, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} --- [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5787, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=33 /* 0.33 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5640] umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... restart_syscall resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] fstat(3 [pid 5638] umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] fstat(4 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(3 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./28", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... openat resumed>) = 3 [pid 5637] getdents64(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] fstat(3 [pid 5634] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] close(4 [pid 5636] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... openat resumed>) = 3 [pid 5640] newfstatat(AT_FDCWD, "./28/binderfs" [pid 5638] getdents64(3 [pid 5637] <... close resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] rmdir("./29/bus" [pid 5636] fstat(3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] unlink("./28/binderfs" [pid 5638] umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3 [pid 5640] <... unlink resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] newfstatat(AT_FDCWD, "./29/binderfs" [pid 5637] getdents64(3 [pid 5636] getdents64(3 [pid 5634] umount2("./28/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] close(3) = 0 [pid 5637] rmdir("./29" [pid 5636] umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./29/binderfs" [pid 5638] unlink("./29/binderfs" [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] newfstatat(AT_FDCWD, "./28/binderfs" [pid 5638] <... unlink resumed>) = 0 [pid 5636] unlink("./29/binderfs" [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] mkdir("./30", 0777) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5634] unlink("./28/binderfs") = 0 [pid 5636] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3 [pid 5638] <... umount2 resumed>) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5638] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./29/bus" [pid 5634] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./28/bus" [pid 5638] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5636] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./29/bus" [pid 5634] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] fstat(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] getdents64(4 [pid 5634] <... openat resumed>) = 4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] newfstatat(AT_FDCWD, "./28/bus" [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] fstat(4 [pid 5638] getdents64(4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] umount2("./28/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] close(4 [pid 5634] getdents64(4 [pid 5638] <... close resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] rmdir("./29/bus" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] getdents64(4 [pid 5640] openat(AT_FDCWD, "./28/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... rmdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5636] <... openat resumed>) = 4 [pid 5640] fstat(4 [pid 5638] getdents64(3 [pid 5636] fstat(4 [pid 5634] close(4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] getdents64(4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] close(3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... close resumed>) = 0 [pid 5640] getdents64(4 [pid 5638] <... close resumed>) = 0 [pid 5634] rmdir("./28/bus" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] rmdir("./29" [pid 5636] getdents64(4 [pid 5634] <... rmdir resumed>) = 0 [pid 5640] close(4) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] rmdir("./28/bus" [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] mkdir("./30", 0777 [pid 5634] close(3 [pid 5640] <... rmdir resumed>) = 0 [pid 5636] close(4 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] close(3 [pid 5636] rmdir("./29/bus" [pid 5640] <... close resumed>) = 0 [pid 5634] rmdir("./28" [pid 5640] rmdir("./28" [pid 5634] <... rmdir resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5636] <... rmdir resumed>) = 0 [pid 5634] mkdir("./29", 0777) = 0 [pid 5636] getdents64(3 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] <... rmdir resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3 [pid 5640] mkdir("./29", 0777 [pid 5638] <... openat resumed>) = 3 [pid 5636] <... close resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5638] <... ioctl resumed>) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5638] close(3 [pid 5634] close(3 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] rmdir("./29" [pid 5634] <... close resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5790 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5790 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5790] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5790] <... set_robust_list resumed>) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5791 [pid 5790] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5791 attached [pid 5790] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5790] chdir("./30" [pid 5640] <... mkdir resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5790] <... chdir resumed>) = 0 [pid 5790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5790] setpgid(0, 0) = 0 [pid 5791] set_robust_list(0x55555d1b46e0, 24 [pid 5790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5791] <... set_robust_list resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5790] <... openat resumed>) = 3 [pid 5791] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... openat resumed>) = 3 [pid 5791] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5791] chdir("./29" [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5791] <... chdir resumed>) = 0 [pid 5790] write(3, "1000", 4 [pid 5640] <... ioctl resumed>) = 0 [pid 5791] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5790] <... write resumed>) = 4 [pid 5640] close(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5791] <... prctl resumed>) = 0 [pid 5790] close(3 [pid 5791] setpgid(0, 0 [pid 5636] mkdir("./30", 0777 [pid 5790] <... close resumed>) = 0 [pid 5790] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5791] <... setpgid resumed>) = 0 [pid 5790] write(1, "executing program\n", 18 [pid 5791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5790] <... write resumed>) = 18 [pid 5636] <... mkdir resumed>) = 0 executing program [pid 5790] memfd_create("syzkaller", 0 [pid 5791] <... openat resumed>) = 3 [pid 5791] write(3, "1000", 4 [pid 5790] <... memfd_create resumed>) = 3 [pid 5791] <... write resumed>) = 4 [pid 5790] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5791] close(3) = 0 [pid 5790] <... mmap resumed>) = 0x7fb9643a6000 [pid 5636] <... openat resumed>) = 3 [pid 5791] symlink("/dev/binderfs", "./binderfs" [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3 [pid 5791] <... symlink resumed>) = 0 [pid 5791] write(1, "executing program\n", 18) = 18 executing program [pid 5791] memfd_create("syzkaller", 0) = 3 [pid 5791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5793 attached , child_tidptr=0x55555d1b46d0) = 5793 [pid 5793] set_robust_list(0x55555d1b46e0, 24 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5793] <... set_robust_list resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5793] chdir("./30") = 0 [pid 5793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5793] setpgid(0, 0) = 0 [pid 5793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5793] write(3, "1000", 4) = 4 [pid 5793] close(3) = 0 [pid 5793] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5793] write(1, "executing program\n", 18) = 18 executing program [pid 5793] memfd_create("syzkaller", 0) = 3 [pid 5793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5790] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5791] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5794 attached [pid 5794] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5794 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5794] <... set_robust_list resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5794] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5794] chdir("./29") = 0 [pid 5794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5794] setpgid(0, 0) = 0 [pid 5794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5794] write(3, "1000", 4) = 4 [pid 5794] close(3) = 0 [pid 5794] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5794] write(1, "executing program\n", 18) = 18 executing program [pid 5794] memfd_create("syzkaller", 0) = 3 [pid 5794] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5636] <... close resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5795 ci2-upstream-fs/strace-static-x86_64: Process 5795 attached [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5795] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5795] <... set_robust_list resumed>) = 0 [pid 5795] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5795] chdir("./30") = 0 [pid 5795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5795] setpgid(0, 0) = 0 [pid 5795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5795] write(3, "1000", 4) = 4 [pid 5795] close(3) = 0 [pid 5795] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5795] write(1, "executing program\n", 18) = 18 executing program [pid 5795] memfd_create("syzkaller", 0) = 3 [pid 5795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5794] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5795] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5790] <... write resumed>) = 16777216 [pid 5790] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5790] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5790] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5790] close(3) = 0 [pid 5790] close(4) = 0 [pid 5790] mkdir("./bus", 0777 [pid 5791] <... write resumed>) = 16777216 [pid 5790] <... mkdir resumed>) = 0 [pid 5793] <... write resumed>) = 16777216 [pid 5791] munmap(0x7fb9643a6000, 138412032 [pid 5790] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5793] munmap(0x7fb9643a6000, 138412032 [pid 5791] <... munmap resumed>) = 0 [pid 5791] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5793] <... munmap resumed>) = 0 [pid 5791] ioctl(4, LOOP_SET_FD, 3 [pid 5793] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5791] <... ioctl resumed>) = 0 [pid 5793] <... openat resumed>) = 4 [pid 5791] close(3 [pid 5790] <... mount resumed>) = 0 [pid 5793] ioctl(4, LOOP_SET_FD, 3 [pid 5791] <... close resumed>) = 0 [pid 5791] close(4 [pid 5790] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5791] <... close resumed>) = 0 [pid 5793] <... ioctl resumed>) = 0 [pid 5791] mkdir("./bus", 0777 [pid 5790] <... openat resumed>) = 3 [pid 5793] close(3 [pid 5791] <... mkdir resumed>) = 0 [pid 5790] chdir("./bus" [pid 5793] <... close resumed>) = 0 [pid 5793] close(4 [pid 5791] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5790] <... chdir resumed>) = 0 [pid 5793] <... close resumed>) = 0 [pid 5790] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5793] mkdir("./bus", 0777 [pid 5790] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5790] exit_group(0) = ? [pid 5793] <... mkdir resumed>) = 0 [pid 5793] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5790] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5790, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=30 /* 0.30 s */} --- [pid 5638] umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./30/binderfs") = 0 [pid 5638] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5791] <... mount resumed>) = 0 [pid 5791] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5791] chdir("./bus") = 0 [pid 5791] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5791] exit_group(0) = ? [pid 5791] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5791, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=36 /* 0.36 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5793] <... mount resumed>) = 0 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5793] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5634] umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5793] chdir("./bus") = 0 [pid 5793] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5793] exit_group(0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5793] <... exit_group resumed>) = ? [pid 5634] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5793] +++ exited with 0 +++ [pid 5634] umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./29/binderfs" [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5793, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5634] unlink("./29/binderfs") = 0 [pid 5634] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] <... umount2 resumed>) = 0 [pid 5637] umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] newfstatat(AT_FDCWD, "./30/binderfs" [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] newfstatat(AT_FDCWD, "./30/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./30/binderfs" [pid 5638] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... unlink resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./30/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./30") = 0 [pid 5638] mkdir("./31", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./30/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] newfstatat(AT_FDCWD, "./29/bus" [pid 5637] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5798 [pid 5637] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOWci2-upstream-fs/strace-static-x86_64: Process 5798 attached [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... openat resumed>) = 4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5798] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] fstat(4 [pid 5798] <... set_robust_list resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5798] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] getdents64(4 [pid 5634] <... openat resumed>) = 4 [pid 5798] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5798] chdir("./31" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] fstat(4 [pid 5798] <... chdir resumed>) = 0 [pid 5637] getdents64(4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5798] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5794] <... write resumed>) = 16777216 [pid 5798] <... prctl resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5798] setpgid(0, 0 [pid 5637] close(4 [pid 5798] <... setpgid resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] rmdir("./30/bus" [pid 5798] <... openat resumed>) = 3 [pid 5794] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4 [pid 5798] write(3, "1000", 4 [pid 5637] getdents64(3 [pid 5798] <... write resumed>) = 4 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5798] close(3 [pid 5637] close(3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5798] <... close resumed>) = 0 [pid 5798] symlink("/dev/binderfs", "./binderfs" [pid 5637] <... close resumed>) = 0 [pid 5634] close(4 [pid 5798] <... symlink resumed>) = 0 [pid 5637] rmdir("./30" [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./29/bus" [pid 5798] write(1, "executing program\n", 18 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5798] <... write resumed>) = 18 executing program [pid 5634] getdents64(3 [pid 5798] memfd_create("syzkaller", 0 [pid 5637] mkdir("./31", 0777 [pid 5798] <... memfd_create resumed>) = 3 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5798] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5634] close(3 [pid 5637] <... mkdir resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5794] <... munmap resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5634] rmdir("./29" [pid 5794] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5794] <... openat resumed>) = 4 [pid 5794] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... ioctl resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5794] <... ioctl resumed>) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] mkdir("./30", 0777 [pid 5794] close(3) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... mkdir resumed>) = 0 [pid 5794] close(4) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5794] mkdir("./bus", 0777ci2-upstream-fs/strace-static-x86_64: Process 5799 attached [pid 5634] <... openat resumed>) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5799 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] close(3 [pid 5799] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5799] <... set_robust_list resumed>) = 0 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5799] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5799] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5799] chdir("./31" [pid 5794] <... mkdir resumed>) = 0 [pid 5799] <... chdir resumed>) = 0 [pid 5799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5794] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, ""ci2-upstream-fs/strace-static-x86_64: Process 5800 attached [pid 5799] setpgid(0, 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5800 [pid 5799] <... setpgid resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5800] set_robust_list(0x55555d1b46e0, 24 [pid 5799] <... openat resumed>) = 3 [pid 5800] <... set_robust_list resumed>) = 0 [pid 5799] write(3, "1000", 4 [pid 5800] rt_sigprocmask(SIG_SETMASK, [] [pid 5799] <... write resumed>) = 4 [pid 5800] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5800] chdir("./30" [pid 5799] close(3) = 0 [pid 5800] <... chdir resumed>) = 0 [pid 5800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5800] setpgid(0, 0 [pid 5799] symlink("/dev/binderfs", "./binderfs" [pid 5800] <... setpgid resumed>) = 0 [pid 5799] <... symlink resumed>) = 0 [pid 5794] <... mount resumed>) = 0 [pid 5800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5799] write(1, "executing program\n", 18 executing program [pid 5794] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5799] <... write resumed>) = 18 [pid 5794] <... openat resumed>) = 3 [pid 5800] write(3, "1000", 4 [pid 5799] memfd_create("syzkaller", 0 [pid 5800] <... write resumed>) = 4 [pid 5800] close(3 [pid 5799] <... memfd_create resumed>) = 3 [pid 5794] chdir("./bus" [pid 5799] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5800] <... close resumed>) = 0 [pid 5800] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5794] <... chdir resumed>) = 0 [pid 5794] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5800] write(1, "executing program\n", 18 [pid 5794] exit_group(0) = ? executing program [pid 5800] <... write resumed>) = 18 [pid 5800] memfd_create("syzkaller", 0 [pid 5794] +++ exited with 0 +++ [pid 5800] <... memfd_create resumed>) = 3 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5794, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} --- [pid 5800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5800] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5640] umount2("./29", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./29/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./29/binderfs") = 0 [pid 5640] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5640] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./29/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./29/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./29/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./29/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./29") = 0 [pid 5640] mkdir("./30", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5801 attached , child_tidptr=0x55555d1b46d0) = 5801 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5801] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5801] <... set_robust_list resumed>) = 0 [pid 5801] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5801] chdir("./30") = 0 [pid 5801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5801] setpgid(0, 0) = 0 [pid 5801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5795] <... write resumed>) = 16777216 [pid 5801] write(3, "1000", 4) = 4 [pid 5801] close(3 [pid 5795] munmap(0x7fb9643a6000, 138412032 [pid 5801] <... close resumed>) = 0 [pid 5801] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5801] write(1, "executing program\n", 18) = 18 executing program [pid 5801] memfd_create("syzkaller", 0) = 3 [pid 5801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5795] <... munmap resumed>) = 0 [pid 5795] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5795] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5795] close(3) = 0 [pid 5795] close(4) = 0 [pid 5795] mkdir("./bus", 0777) = 0 [pid 5795] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5798] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5795] <... mount resumed>) = 0 [pid 5795] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5795] chdir("./bus") = 0 [pid 5795] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5795] exit_group(0) = ? [pid 5795] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5795, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=36 /* 0.36 s */} --- [pid 5636] umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./30/binderfs") = 0 [pid 5636] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5799] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5800] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./30/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./30/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./30") = 0 [pid 5636] mkdir("./31", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5804 attached , child_tidptr=0x55555d1b46d0) = 5804 [pid 5804] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5804] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5804] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5804] chdir("./31") = 0 [pid 5804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5804] setpgid(0, 0) = 0 [pid 5804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "1000", 4) = 4 [pid 5804] close(3) = 0 [pid 5804] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5804] write(1, "executing program\n", 18) = 18 executing program [pid 5804] memfd_create("syzkaller", 0 [pid 5801] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5804] <... memfd_create resumed>) = 3 [pid 5804] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5804] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5799] <... write resumed>) = 16777216 [pid 5799] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5798] <... write resumed>) = 16777216 [pid 5799] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5798] munmap(0x7fb9643a6000, 138412032 [pid 5799] <... openat resumed>) = 4 [pid 5799] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5799] close(3) = 0 [pid 5799] close(4) = 0 [pid 5799] mkdir("./bus", 0777 [pid 5798] <... munmap resumed>) = 0 [pid 5798] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5799] <... mkdir resumed>) = 0 [pid 5798] ioctl(4, LOOP_SET_FD, 3 [pid 5799] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5798] <... ioctl resumed>) = 0 [pid 5798] close(3) = 0 [pid 5798] close(4) = 0 [pid 5798] mkdir("./bus", 0777) = 0 [pid 5798] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5798] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5798] chdir("./bus") = 0 [ 260.634531][ T5799] set_capacity_and_notify: 5 callbacks suppressed [ 260.634551][ T5799] loop2: detected capacity change from 0 to 32768 [ 260.665297][ T5798] loop3: detected capacity change from 0 to 32768 [pid 5798] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5798] exit_group(0) = ? [pid 5798] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5798, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=33 /* 0.33 s */} --- [pid 5799] <... mount resumed>) = 0 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5799] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... restart_syscall resumed>) = 0 [pid 5799] <... openat resumed>) = 3 [pid 5799] chdir("./bus" [pid 5638] umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5799] <... chdir resumed>) = 0 [pid 5801] <... write resumed>) = 16777216 [pid 5799] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5801] munmap(0x7fb9643a6000, 138412032 [pid 5799] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5799] exit_group(0 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5799] <... exit_group resumed>) = ? [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5799] +++ exited with 0 +++ [pid 5638] newfstatat(AT_FDCWD, "./31/binderfs" [pid 5801] <... munmap resumed>) = 0 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5799, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=28 /* 0.28 s */} --- [pid 5801] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5801] <... openat resumed>) = 4 [pid 5801] ioctl(4, LOOP_SET_FD, 3 [pid 5638] unlink("./31/binderfs") = 0 [pid 5801] <... ioctl resumed>) = 0 [pid 5801] close(3 [pid 5638] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5801] <... close resumed>) = 0 [pid 5801] close(4) = 0 [pid 5637] umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5801] mkdir("./bus", 0777) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5801] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5801] <... mount resumed>) = 0 [pid 5637] newfstatat(AT_FDCWD, "./31/binderfs" [pid 5801] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5801] chdir("./bus" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5801] <... chdir resumed>) = 0 [pid 5801] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] unlink("./31/binderfs" [pid 5801] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5800] <... write resumed>) = 16777216 [pid 5637] <... unlink resumed>) = 0 [pid 5801] exit_group(0 [pid 5637] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5801] <... exit_group resumed>) = ? [ 260.815420][ T5801] loop4: detected capacity change from 0 to 32768 [pid 5801] +++ exited with 0 +++ [pid 5800] munmap(0x7fb9643a6000, 138412032 [pid 5638] <... umount2 resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5801, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=18 /* 0.18 s */} --- [pid 5638] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./31/bus" [pid 5800] <... munmap resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5800] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5800] <... openat resumed>) = 4 [pid 5640] <... openat resumed>) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5800] ioctl(4, LOOP_SET_FD, 3 [pid 5638] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5800] <... ioctl resumed>) = 0 [pid 5640] getdents64(3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] <... openat resumed>) = 4 [pid 5640] umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5800] close(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] fstat(4 [pid 5800] <... close resumed>) = 0 [pid 5640] newfstatat(AT_FDCWD, "./30/binderfs" [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5800] close(4 [pid 5638] getdents64(4 [pid 5800] <... close resumed>) = 0 [pid 5800] mkdir("./bus", 0777 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5800] <... mkdir resumed>) = 0 [pid 5640] unlink("./30/binderfs" [pid 5638] getdents64(4 [pid 5800] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] <... unlink resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5640] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rmdir("./31/bus" [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 260.906840][ T5800] loop0: detected capacity change from 0 to 32768 [pid 5638] <... rmdir resumed>) = 0 [pid 5638] getdents64(3 [pid 5637] newfstatat(AT_FDCWD, "./31/bus" [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5800] <... mount resumed>) = 0 [pid 5638] close(3 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./31" [pid 5800] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... rmdir resumed>) = 0 [pid 5637] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] mkdir("./32", 0777 [pid 5800] <... openat resumed>) = 3 [pid 5638] <... mkdir resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5800] chdir("./bus" [pid 5637] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... openat resumed>) = 3 [pid 5800] <... chdir resumed>) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5800] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] <... umount2 resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5637] fstat(4 [pid 5800] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] <... ioctl resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5800] exit_group(0 [pid 5638] close(3 [pid 5637] getdents64(4 [pid 5800] <... exit_group resumed>) = ? [pid 5640] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... close resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] getdents64(4 [pid 5640] newfstatat(AT_FDCWD, "./30/bus" [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] close(4 [pid 5800] +++ exited with 0 +++ ci2-upstream-fs/strace-static-x86_64: Process 5806 attached [pid 5637] <... close resumed>) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5800, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=29 /* 0.29 s */} --- [pid 5806] set_robust_list(0x55555d1b46e0, 24 [pid 5640] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5806 [pid 5637] rmdir("./31/bus" [pid 5806] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] umount2("./30", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5806] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5806] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5806] chdir("./32" [pid 5640] <... openat resumed>) = 4 [pid 5637] getdents64(3 [pid 5806] <... chdir resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5806] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] fstat(4 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] fstat(3 [pid 5806] <... prctl resumed>) = 0 [pid 5806] setpgid(0, 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5806] <... setpgid resumed>) = 0 [pid 5806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(3 [pid 5637] close(3 [pid 5806] <... openat resumed>) = 3 [pid 5640] getdents64(4 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5806] write(3, "1000", 4 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] <... close resumed>) = 0 [pid 5806] <... write resumed>) = 4 [pid 5640] close(4 [pid 5637] rmdir("./31" [pid 5634] umount2("./30/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5806] close(3 [pid 5640] <... close resumed>) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5806] <... close resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5806] symlink("/dev/binderfs", "./binderfs" [pid 5634] newfstatat(AT_FDCWD, "./30/binderfs" [pid 5640] rmdir("./30/bus" [pid 5806] <... symlink resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5637] mkdir("./32", 0777 [pid 5634] unlink("./30/binderfs" [pid 5806] write(1, "executing program\n", 18 [pid 5640] getdents64(3 [pid 5637] <... mkdir resumed>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5806] <... write resumed>) = 18 executing program [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5806] memfd_create("syzkaller", 0 [pid 5640] close(3 [pid 5634] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... close resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5640] rmdir("./30") = 0 [pid 5637] <... ioctl resumed>) = 0 [pid 5806] <... memfd_create resumed>) = 3 [pid 5637] close(3 [pid 5806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] mkdir("./31", 0777 [pid 5806] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5807 attached [pid 5807] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5807 [pid 5807] <... set_robust_list resumed>) = 0 [pid 5807] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5807] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5807] chdir("./31" [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5807] <... chdir resumed>) = 0 [pid 5807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5807] setpgid(0, 0) = 0 [pid 5807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5634] <... umount2 resumed>) = 0 [pid 5807] write(3, "1000", 4 [pid 5634] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5807] <... write resumed>) = 4 [pid 5634] newfstatat(AT_FDCWD, "./30/bus" [pid 5807] close(3) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5807] symlink("/dev/binderfs", "./binderfs" [pid 5634] umount2("./30/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5807] <... symlink resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./30/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5807] write(1, "executing program\n", 18 [pid 5634] <... openat resumed>) = 4 [pid 5807] <... write resumed>) = 18 executing program [pid 5634] fstat(4 [pid 5807] memfd_create("syzkaller", 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5807] <... memfd_create resumed>) = 3 [pid 5634] getdents64(4 [pid 5807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5807] <... mmap resumed>) = 0x7fb9643a6000 [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./30/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./30") = 0 [pid 5634] mkdir("./31", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5808 attached , child_tidptr=0x55555d1b46d0) = 5808 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5808] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5808] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5808] chdir("./31") = 0 [pid 5808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5808] setpgid(0, 0) = 0 [pid 5808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5808] write(3, "1000", 4) = 4 [pid 5808] close(3) = 0 [pid 5808] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5808] write(1, "executing program\n", 18) = 18 [pid 5808] memfd_create("syzkaller", 0 [pid 5804] <... write resumed>) = 16777216 [pid 5808] <... memfd_create resumed>) = 3 [pid 5804] munmap(0x7fb9643a6000, 138412032 [pid 5808] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5804] <... munmap resumed>) = 0 [pid 5804] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5804] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5804] close(3) = 0 [pid 5804] close(4) = 0 [pid 5804] mkdir("./bus", 0777) = 0 [ 261.406267][ T5804] loop1: detected capacity change from 0 to 32768 [pid 5804] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5804] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5804] chdir("./bus") = 0 [pid 5804] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5804] exit_group(0) = ? [pid 5806] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5804] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5804, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./31/binderfs") = 0 [pid 5636] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./31/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./31/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./31") = 0 [pid 5636] mkdir("./32", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5809 attached , child_tidptr=0x55555d1b46d0) = 5809 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5809] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5809] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5809] chdir("./32") = 0 [pid 5809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5809] setpgid(0, 0) = 0 [pid 5809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5809] write(3, "1000", 4) = 4 [pid 5809] close(3) = 0 [pid 5809] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5809] write(1, "executing program\n", 18) = 18 [pid 5809] memfd_create("syzkaller", 0) = 3 [pid 5809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5807] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5808] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5810 attached , child_tidptr=0x55555d1b46d0) = 5810 [pid 5810] set_robust_list(0x55555d1b46e0, 24 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5810] <... set_robust_list resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5810] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5810] chdir("./32") = 0 [pid 5810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5810] setpgid(0, 0) = 0 [pid 5810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5810] write(3, "1000", 4) = 4 [pid 5810] close(3) = 0 [pid 5810] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5810] write(1, "executing program\n", 18) = 18 executing program [pid 5810] memfd_create("syzkaller", 0) = 3 [pid 5810] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5809] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5810] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5806] <... write resumed>) = 16777216 [pid 5806] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5806] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5806] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5806] close(3) = 0 [pid 5806] close(4) = 0 [pid 5806] mkdir("./bus", 0777) = 0 [pid 5806] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5806] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [ 262.481794][ T5806] loop3: detected capacity change from 0 to 32768 [pid 5806] chdir("./bus") = 0 [pid 5806] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5806] exit_group(0) = ? [pid 5806] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5806, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./32/binderfs") = 0 [pid 5638] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./32/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5807] <... write resumed>) = 16777216 [pid 5638] getdents64(4 [pid 5807] munmap(0x7fb9643a6000, 138412032 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./32/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5808] <... write resumed>) = 16777216 [pid 5638] close(3 [pid 5808] munmap(0x7fb9643a6000, 138412032 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./32") = 0 [pid 5807] <... munmap resumed>) = 0 [pid 5638] mkdir("./33", 0777 [pid 5807] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5638] <... mkdir resumed>) = 0 [pid 5808] <... munmap resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5807] ioctl(4, LOOP_SET_FD, 3 [pid 5808] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5807] <... ioctl resumed>) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5807] close(3) = 0 [pid 5807] close(4 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5808] <... openat resumed>) = 4 [pid 5638] <... ioctl resumed>) = 0 [pid 5808] ioctl(4, LOOP_SET_FD, 3 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5811 attached [pid 5808] <... ioctl resumed>) = 0 [pid 5807] <... close resumed>) = 0 [pid 5811] set_robust_list(0x55555d1b46e0, 24 [pid 5808] close(3 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5811 [pid 5811] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5811] rt_sigprocmask(SIG_SETMASK, [] [pid 5808] <... close resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5811] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5808] close(4 [pid 5807] mkdir("./bus", 0777 [pid 5811] chdir("./33" [pid 5808] <... close resumed>) = 0 [pid 5807] <... mkdir resumed>) = 0 [pid 5808] mkdir("./bus", 0777 [pid 5811] <... chdir resumed>) = 0 [pid 5811] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5808] <... mkdir resumed>) = 0 [ 262.730326][ T5807] loop4: detected capacity change from 0 to 32768 [ 262.748665][ T5808] loop0: detected capacity change from 0 to 32768 [pid 5807] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5811] <... prctl resumed>) = 0 [pid 5808] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5811] setpgid(0, 0) = 0 [pid 5807] <... mount resumed>) = 0 [pid 5811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5807] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5811] <... openat resumed>) = 3 [pid 5807] <... openat resumed>) = 3 [pid 5811] write(3, "1000", 4) = 4 [pid 5811] close(3 [pid 5808] <... mount resumed>) = 0 [pid 5807] chdir("./bus") = 0 [pid 5807] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5808] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5807] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5808] chdir("./bus" [pid 5811] <... close resumed>) = 0 [pid 5807] exit_group(0 [pid 5808] <... chdir resumed>) = 0 [pid 5811] symlink("/dev/binderfs", "./binderfs" [pid 5808] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5807] <... exit_group resumed>) = ? [pid 5808] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5807] +++ exited with 0 +++ [pid 5808] exit_group(0) = ? [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5807, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5808] +++ exited with 0 +++ [pid 5811] <... symlink resumed>) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5808, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5640] umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5811] write(1, "executing program\n", 18 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... restart_syscall resumed>) = 0 executing program [pid 5640] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5811] <... write resumed>) = 18 [pid 5640] <... openat resumed>) = 3 [pid 5640] fstat(3 [pid 5811] memfd_create("syzkaller", 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] umount2("./31", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5811] <... memfd_create resumed>) = 3 [pid 5640] getdents64(3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5640] newfstatat(AT_FDCWD, "./31/binderfs" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./31/binderfs" [pid 5634] getdents64(3 [pid 5640] <... unlink resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] umount2("./31/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./31/binderfs") = 0 [pid 5634] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./31/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./31/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5640] close(3) = 0 [pid 5634] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] rmdir("./31" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... rmdir resumed>) = 0 [pid 5640] mkdir("./32", 0777 [pid 5634] newfstatat(AT_FDCWD, "./31/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5634] umount2("./31/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] openat(AT_FDCWD, "./31/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4 [pid 5640] <... openat resumed>) = 3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5634] close(4) = 0 [pid 5634] rmdir("./31/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./31") = 0 [pid 5634] mkdir("./32", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3 [pid 5809] <... write resumed>) = 16777216 [pid 5809] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5809] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5809] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5809] close(3) = 0 [pid 5809] close(4) = 0 [pid 5809] mkdir("./bus", 0777) = 0 [pid 5809] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5809] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5809] chdir("./bus") = 0 [pid 5809] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [ 263.198943][ T5809] loop1: detected capacity change from 0 to 32768 [pid 5809] exit_group(0) = ? [pid 5809] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5809, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5810] <... write resumed>) = 16777216 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5810] munmap(0x7fb9643a6000, 138412032 [pid 5636] umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./32/binderfs") = 0 [pid 5636] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5810] <... munmap resumed>) = 0 [pid 5810] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5810] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5811] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5810] close(3) = 0 [pid 5810] close(4) = 0 [pid 5810] mkdir("./bus", 0777) = 0 [pid 5810] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... umount2 resumed>) = 0 [ 263.322608][ T5810] loop2: detected capacity change from 0 to 32768 [pid 5636] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5810] <... mount resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./32/bus" [pid 5810] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5810] chdir("./bus") = 0 [pid 5636] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5810] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5810] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5636] <... openat resumed>) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5810] exit_group(0 [pid 5636] getdents64(4 [pid 5810] <... exit_group resumed>) = ? [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./32/bus" [pid 5810] +++ exited with 0 +++ [pid 5636] <... rmdir resumed>) = 0 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5810, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5637] umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] rmdir("./32" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] <... rmdir resumed>) = 0 [pid 5637] fstat(3 [pid 5636] mkdir("./33", 0777 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5636] <... mkdir resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] unlink("./32/binderfs" [pid 5636] <... openat resumed>) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5637] <... unlink resumed>) = 0 [pid 5637] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5812 [pid 5636] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5812 attached , NULL, 8) = 0 [pid 5812] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5812] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5812] chdir("./33") = 0 [pid 5812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5812] setpgid(0, 0) = 0 [pid 5812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5812] write(3, "1000", 4) = 4 [pid 5812] close(3) = 0 [pid 5812] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5812] write(1, "executing program\n", 18 [pid 5637] <... umount2 resumed>) = 0 [pid 5812] <... write resumed>) = 18 executing program [pid 5812] memfd_create("syzkaller", 0 [pid 5637] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5812] <... memfd_create resumed>) = 3 [pid 5637] newfstatat(AT_FDCWD, "./32/bus" [pid 5812] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5812] <... mmap resumed>) = 0x7fb9643a6000 [pid 5637] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./32/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./32") = 0 [pid 5637] mkdir("./33", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5813 attached [pid 5813] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5813 [pid 5813] <... set_robust_list resumed>) = 0 [pid 5813] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5813] chdir("./33" [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5813] <... chdir resumed>) = 0 [pid 5813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5813] setpgid(0, 0) = 0 [pid 5813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5813] write(3, "1000", 4) = 4 [pid 5813] close(3) = 0 [pid 5813] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5813] write(1, "executing program\n", 18) = 18 executing program [pid 5813] memfd_create("syzkaller", 0) = 3 [pid 5813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5814 ci2-upstream-fs/strace-static-x86_64: Process 5814 attached [pid 5814] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5814] <... set_robust_list resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5814] chdir("./32") = 0 [pid 5814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5814] setpgid(0, 0) = 0 [pid 5814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... close resumed>) = 0 [pid 5814] <... openat resumed>) = 3 [pid 5814] write(3, "1000", 4 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5814] <... write resumed>) = 4 [pid 5814] close(3 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5814] <... close resumed>) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5814] symlink("/dev/binderfs", "./binderfs") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5815 attached [pid 5815] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5815 [pid 5815] <... set_robust_list resumed>) = 0 [pid 5814] write(1, "executing program\n", 18 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5814] <... write resumed>) = 18 [pid 5815] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 5815] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5814] memfd_create("syzkaller", 0 [pid 5815] chdir("./32" [pid 5814] <... memfd_create resumed>) = 3 [pid 5815] <... chdir resumed>) = 0 [pid 5814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5815] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5814] <... mmap resumed>) = 0x7fb9643a6000 [pid 5815] <... prctl resumed>) = 0 [pid 5815] setpgid(0, 0) = 0 [pid 5815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5815] write(3, "1000", 4) = 4 [pid 5815] close(3) = 0 [pid 5815] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5815] write(1, "executing program\n", 18) = 18 executing program [pid 5815] memfd_create("syzkaller", 0) = 3 [pid 5815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5812] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5813] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5815] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5814] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5811] <... write resumed>) = 16777216 [pid 5811] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5811] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5811] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5811] close(3) = 0 [pid 5811] close(4) = 0 [pid 5811] mkdir("./bus", 0777) = 0 [pid 5811] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5811] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5811] chdir("./bus") = 0 [pid 5811] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5811] exit_group(0) = ? [pid 5811] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5811, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=32 /* 0.32 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./33/binderfs") = 0 [pid 5638] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./33/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./33/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./33") = 0 [pid 5638] mkdir("./34", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5816 attached [pid 5816] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5816 [pid 5816] <... set_robust_list resumed>) = 0 [pid 5816] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5816] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5816] chdir("./34") = 0 [pid 5816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5816] setpgid(0, 0) = 0 [pid 5816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5816] write(3, "1000", 4) = 4 [pid 5816] close(3) = 0 [pid 5816] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5816] write(1, "executing program\n", 18) = 18 [pid 5816] memfd_create("syzkaller", 0) = 3 [pid 5816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5812] <... write resumed>) = 16777216 [pid 5812] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5812] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5812] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5812] close(3) = 0 [pid 5812] close(4) = 0 [pid 5812] mkdir("./bus", 0777) = 0 [pid 5812] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5812] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5812] chdir("./bus") = 0 [pid 5812] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5812] exit_group(0) = ? [pid 5812] +++ exited with 0 +++ [pid 5815] <... write resumed>) = 16777216 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5812, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5815] munmap(0x7fb9643a6000, 138412032 [pid 5636] umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5813] <... write resumed>) = 16777216 [pid 5636] <... openat resumed>) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3 [pid 5815] <... munmap resumed>) = 0 [pid 5813] munmap(0x7fb9643a6000, 138412032 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5815] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5815] <... openat resumed>) = 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5815] ioctl(4, LOOP_SET_FD, 3 [pid 5636] newfstatat(AT_FDCWD, "./33/binderfs" [pid 5815] <... ioctl resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./33/binderfs") = 0 [pid 5815] close(3 [pid 5636] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5815] <... close resumed>) = 0 [pid 5815] close(4) = 0 [pid 5815] mkdir("./bus", 0777) = 0 [pid 5815] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5813] <... munmap resumed>) = 0 [pid 5813] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5813] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5813] close(3) = 0 [pid 5813] close(4) = 0 [pid 5813] mkdir("./bus", 0777) = 0 [pid 5813] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./33/bus" [pid 5815] <... mount resumed>) = 0 [pid 5815] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5815] <... openat resumed>) = 3 [pid 5636] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5815] chdir("./bus" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5815] <... chdir resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5815] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5636] <... openat resumed>) = 4 [pid 5816] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5815] exit_group(0) = ? [pid 5813] <... mount resumed>) = 0 [pid 5636] fstat(4 [pid 5813] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5813] <... openat resumed>) = 3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4 [pid 5815] +++ exited with 0 +++ [pid 5813] chdir("./bus" [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5813] <... chdir resumed>) = 0 [pid 5636] close(4 [pid 5813] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] <... close resumed>) = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5815, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5813] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5814] <... write resumed>) = 16777216 [pid 5813] exit_group(0 [pid 5636] rmdir("./33/bus" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5814] munmap(0x7fb9643a6000, 138412032 [pid 5813] <... exit_group resumed>) = ? [pid 5636] <... rmdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3 [pid 5813] +++ exited with 0 +++ [pid 5636] getdents64(3 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] getdents64(3 [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5813, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=27 /* 0.27 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] close(3 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5634] umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] rmdir("./33" [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... rmdir resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./32/binderfs" [pid 5637] umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] mkdir("./34", 0777 [pid 5634] unlink("./32/binderfs") = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5814] <... munmap resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./33/binderfs" [pid 5814] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5814] <... openat resumed>) = 4 [pid 5637] unlink("./33/binderfs" [pid 5814] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... unlink resumed>) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5637] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5814] <... ioctl resumed>) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5814] close(3) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3 [pid 5814] close(4) = 0 [pid 5636] <... close resumed>) = 0 [pid 5814] mkdir("./bus", 0777 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5817 attached , child_tidptr=0x55555d1b46d0) = 5817 [pid 5817] set_robust_list(0x55555d1b46e0, 24 [pid 5814] <... mkdir resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5817] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5814] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5817] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... umount2 resumed>) = 0 [pid 5817] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5817] chdir("./34") = 0 [pid 5817] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5817] <... prctl resumed>) = 0 [pid 5817] setpgid(0, 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5817] <... setpgid resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./32/bus" [pid 5817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5817] <... openat resumed>) = 3 [pid 5634] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5817] write(3, "1000", 4 [pid 5637] <... umount2 resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5817] <... write resumed>) = 4 [pid 5817] close(3 [pid 5634] <... openat resumed>) = 4 [pid 5817] <... close resumed>) = 0 [pid 5637] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] fstat(4 [pid 5817] symlink("/dev/binderfs", "./binderfs" [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5817] <... symlink resumed>) = 0 [pid 5637] newfstatat(AT_FDCWD, "./33/bus" [pid 5634] getdents64(4 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 executing program [pid 5817] write(1, "executing program\n", 18 [pid 5637] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5817] <... write resumed>) = 18 [pid 5634] getdents64(4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5817] memfd_create("syzkaller", 0 [pid 5814] <... mount resumed>) = 0 [pid 5637] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] close(4 [pid 5814] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] <... openat resumed>) = 4 [pid 5634] <... close resumed>) = 0 [pid 5814] <... openat resumed>) = 3 [pid 5634] rmdir("./32/bus" [pid 5814] chdir("./bus" [pid 5817] <... memfd_create resumed>) = 3 [pid 5634] <... rmdir resumed>) = 0 [pid 5814] <... chdir resumed>) = 0 [pid 5817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5814] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] fstat(4 [pid 5634] getdents64(3 [pid 5814] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5814] exit_group(0 [pid 5817] <... mmap resumed>) = 0x7fb9643a6000 [pid 5814] <... exit_group resumed>) = ? [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] getdents64(4 [pid 5634] close(3 [pid 5814] +++ exited with 0 +++ [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] <... close resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5814, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=24 /* 0.24 s */} --- [pid 5637] getdents64(4 [pid 5634] rmdir("./32" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5634] <... rmdir resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5634] mkdir("./33", 0777 [pid 5637] rmdir("./33/bus" [pid 5640] umount2("./32", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... mkdir resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] <... openat resumed>) = 3 [pid 5634] <... openat resumed>) = 3 [pid 5640] fstat(3 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5640] getdents64(3 [pid 5634] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./32/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(3 [pid 5634] <... close resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] newfstatat(AT_FDCWD, "./32/binderfs" [pid 5637] close(3 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] <... close resumed>) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] rmdir("./33" [pid 5640] unlink("./32/binderfs" [pid 5637] <... rmdir resumed>) = 0 [pid 5637] mkdir("./34", 0777 [pid 5640] <... unlink resumed>) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5640] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 ci2-upstream-fs/strace-static-x86_64: Process 5818 attached [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5818] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... ioctl resumed>) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5818 [pid 5637] close(3 [pid 5818] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... close resumed>) = 0 [pid 5818] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5818] chdir("./33" [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5818] <... chdir resumed>) = 0 [pid 5818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5818] setpgid(0, 0) = 0 [pid 5818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5818] write(3, "1000", 4) = 4 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5819 [pid 5818] close(3) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5819 attached [pid 5818] symlink("/dev/binderfs", "./binderfs" [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5819] set_robust_list(0x55555d1b46e0, 24 [pid 5818] <... symlink resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5819] <... set_robust_list resumed>) = 0 [pid 5819] rt_sigprocmask(SIG_SETMASK, [] executing program [pid 5818] write(1, "executing program\n", 18 [pid 5819] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5818] <... write resumed>) = 18 [pid 5819] chdir("./34" [pid 5818] memfd_create("syzkaller", 0 [pid 5819] <... chdir resumed>) = 0 [pid 5818] <... memfd_create resumed>) = 3 [pid 5819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5819] setpgid(0, 0) = 0 [pid 5818] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5818] <... mmap resumed>) = 0x7fb9643a6000 [pid 5819] <... openat resumed>) = 3 [pid 5819] write(3, "1000", 4) = 4 [pid 5819] close(3) = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5819] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5640] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5819] write(1, "executing program\n", 18 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5819] <... write resumed>) = 18 executing program [pid 5640] newfstatat(AT_FDCWD, "./32/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5819] memfd_create("syzkaller", 0) = 3 [pid 5640] umount2("./32/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./32/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./32/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./32") = 0 [pid 5640] mkdir("./33", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5820 attached [pid 5820] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5820 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5820] <... set_robust_list resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5820] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5820] chdir("./33") = 0 [pid 5820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5820] setpgid(0, 0) = 0 [pid 5820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5820] write(3, "1000", 4) = 4 [pid 5820] close(3) = 0 [pid 5820] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5820] write(1, "executing program\n", 18) = 18 [pid 5820] memfd_create("syzkaller", 0) = 3 [pid 5820] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5819] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5818] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5820] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5816] <... write resumed>) = 16777216 [pid 5816] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5816] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5816] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5816] close(3) = 0 [pid 5816] close(4) = 0 [pid 5816] mkdir("./bus", 0777) = 0 [ 266.230462][ T5816] set_capacity_and_notify: 5 callbacks suppressed [ 266.230484][ T5816] loop3: detected capacity change from 0 to 32768 [pid 5816] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5816] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5816] chdir("./bus") = 0 [pid 5816] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5816] exit_group(0) = ? [pid 5816] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5816, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=33 /* 0.33 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./34/binderfs") = 0 [pid 5638] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./34/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./34") = 0 [pid 5638] mkdir("./35", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5821 attached , child_tidptr=0x55555d1b46d0) = 5821 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5821] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5821] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5821] chdir("./35") = 0 [pid 5821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5821] setpgid(0, 0) = 0 [pid 5821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5821] write(3, "1000", 4) = 4 [pid 5821] close(3) = 0 [pid 5821] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5821] write(1, "executing program\n", 18) = 18 [pid 5821] memfd_create("syzkaller", 0) = 3 [pid 5821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5817] <... write resumed>) = 16777216 [pid 5817] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5817] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5817] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5817] close(3) = 0 [pid 5817] close(4) = 0 [pid 5817] mkdir("./bus", 0777) = 0 [ 266.699992][ T5817] loop1: detected capacity change from 0 to 32768 [pid 5817] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5817] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5817] chdir("./bus") = 0 [pid 5817] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5817] exit_group(0) = ? [pid 5817] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5817, si_uid=0, si_status=0, si_utime=0, si_stime=29 /* 0.29 s */} --- [pid 5636] umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./34/binderfs") = 0 [pid 5636] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./34/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./34") = 0 [pid 5636] mkdir("./35", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5822 attached [pid 5822] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5822 [pid 5819] <... write resumed>) = 16777216 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5822] <... set_robust_list resumed>) = 0 [pid 5822] rt_sigprocmask(SIG_SETMASK, [] [pid 5821] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5822] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5819] munmap(0x7fb9643a6000, 138412032 [pid 5822] chdir("./35") = 0 [pid 5822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5822] setpgid(0, 0) = 0 [pid 5822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5822] write(3, "1000", 4) = 4 [pid 5818] <... write resumed>) = 16777216 [pid 5822] close(3 [pid 5818] munmap(0x7fb9643a6000, 138412032 [pid 5822] <... close resumed>) = 0 [pid 5822] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5822] write(1, "executing program\n", 18) = 18 [pid 5822] memfd_create("syzkaller", 0) = 3 [pid 5819] <... munmap resumed>) = 0 [pid 5822] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5818] <... munmap resumed>) = 0 [pid 5819] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5818] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5819] <... openat resumed>) = 4 [pid 5818] <... openat resumed>) = 4 [pid 5819] ioctl(4, LOOP_SET_FD, 3 [pid 5818] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5819] <... ioctl resumed>) = 0 [pid 5819] close(3 [pid 5818] close(3 [pid 5819] <... close resumed>) = 0 [pid 5818] <... close resumed>) = 0 [pid 5819] close(4 [pid 5818] close(4 [pid 5819] <... close resumed>) = 0 [pid 5818] <... close resumed>) = 0 [pid 5819] mkdir("./bus", 0777 [pid 5818] mkdir("./bus", 0777 [pid 5819] <... mkdir resumed>) = 0 [pid 5818] <... mkdir resumed>) = 0 [pid 5818] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5819] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5820] <... write resumed>) = 16777216 [pid 5820] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5820] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 267.133067][ T5819] loop2: detected capacity change from 0 to 32768 [ 267.134331][ T5818] loop0: detected capacity change from 0 to 32768 [pid 5820] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5820] close(3) = 0 [pid 5820] close(4) = 0 [pid 5820] mkdir("./bus", 0777) = 0 [pid 5820] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5819] <... mount resumed>) = 0 [pid 5818] <... mount resumed>) = 0 [pid 5819] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5818] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5819] <... openat resumed>) = 3 [pid 5818] <... openat resumed>) = 3 [pid 5818] chdir("./bus") = 0 [pid 5819] chdir("./bus" [pid 5818] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5819] <... chdir resumed>) = 0 [pid 5818] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5819] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5818] exit_group(0) = ? [pid 5819] exit_group(0) = ? [pid 5820] <... mount resumed>) = 0 [pid 5818] +++ exited with 0 +++ [pid 5820] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [ 267.226484][ T5820] loop4: detected capacity change from 0 to 32768 [pid 5820] chdir("./bus" [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5818, si_uid=0, si_status=0, si_utime=0, si_stime=42 /* 0.42 s */} --- [pid 5820] <... chdir resumed>) = 0 [pid 5820] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5820] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5820] exit_group(0) = ? [pid 5819] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5819, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=34 /* 0.34 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5820] +++ exited with 0 +++ [pid 5634] <... restart_syscall resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5820, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=25 /* 0.25 s */} --- [pid 5637] <... restart_syscall resumed>) = 0 [pid 5640] umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] umount2("./33", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... openat resumed>) = 3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] fstat(3 [pid 5640] <... openat resumed>) = 3 [pid 5634] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] fstat(3 [pid 5637] getdents64(3 [pid 5634] <... openat resumed>) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] fstat(3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] newfstatat(AT_FDCWD, "./34/binderfs" [pid 5640] umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] unlink("./34/binderfs" [pid 5634] getdents64(3 [pid 5640] newfstatat(AT_FDCWD, "./33/binderfs" [pid 5637] <... unlink resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./33/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./33/binderfs" [pid 5640] unlink("./33/binderfs" [pid 5637] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... unlink resumed>) = 0 [pid 5634] unlink("./33/binderfs" [pid 5640] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... unlink resumed>) = 0 [pid 5634] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5822] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... umount2 resumed>) = 0 [pid 5637] <... umount2 resumed>) = 0 [pid 5640] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./33/bus" [pid 5637] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... umount2 resumed>) = 0 [pid 5640] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... openat resumed>) = 4 [pid 5637] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] newfstatat(AT_FDCWD, "./33/bus" [pid 5640] fstat(4 [pid 5637] <... openat resumed>) = 4 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] fstat(4 [pid 5634] umount2("./33/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] getdents64(4 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4 [pid 5640] getdents64(4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] openat(AT_FDCWD, "./33/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] getdents64(4 [pid 5634] <... openat resumed>) = 4 [pid 5634] fstat(4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5640] close(4 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... close resumed>) = 0 [pid 5637] close(4 [pid 5634] getdents64(4 [pid 5640] rmdir("./33/bus" [pid 5637] <... close resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5637] rmdir("./34/bus" [pid 5634] close(4) = 0 [pid 5634] rmdir("./33/bus") = 0 [pid 5640] getdents64(3 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] getdents64(3 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3 [pid 5637] getdents64(3 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] <... close resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5640] rmdir("./33" [pid 5637] close(3 [pid 5634] rmdir("./33" [pid 5640] <... rmdir resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./34" [pid 5634] <... rmdir resumed>) = 0 [pid 5640] mkdir("./34", 0777 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] mkdir("./34", 0777 [pid 5640] <... mkdir resumed>) = 0 [pid 5637] mkdir("./35", 0777 [pid 5634] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... mkdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] <... openat resumed>) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5634] <... openat resumed>) = 3 [pid 5640] <... ioctl resumed>) = 0 [pid 5640] close(3 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5640] <... close resumed>) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5634] close(3 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... openat resumed>) = 3 [pid 5634] <... close resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] <... ioctl resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5823 attached [pid 5637] close(3 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5823 [pid 5637] <... close resumed>) = 0 [pid 5823] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[]ci2-upstream-fs/strace-static-x86_64: Process 5824 attached , [], 8) = 0 [pid 5823] <... set_robust_list resumed>) = 0 [pid 5824] set_robust_list(0x55555d1b46e0, 24 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5823] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5824 [pid 5824] <... set_robust_list resumed>) = 0 [pid 5823] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5825 attached [pid 5824] rt_sigprocmask(SIG_SETMASK, [] [pid 5823] chdir("./34" [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5825] set_robust_list(0x55555d1b46e0, 24 [pid 5824] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5823] <... chdir resumed>) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5825 [pid 5825] <... set_robust_list resumed>) = 0 [pid 5825] rt_sigprocmask(SIG_SETMASK, [] [pid 5824] chdir("./34" [pid 5823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5825] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5824] <... chdir resumed>) = 0 [pid 5824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5823] <... prctl resumed>) = 0 [pid 5825] chdir("./35" [pid 5824] setpgid(0, 0 [pid 5823] setpgid(0, 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5825] <... chdir resumed>) = 0 [pid 5823] <... setpgid resumed>) = 0 [pid 5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5824] <... setpgid resumed>) = 0 [pid 5825] setpgid(0, 0) = 0 [pid 5825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5825] <... openat resumed>) = 3 [pid 5824] <... openat resumed>) = 3 [pid 5825] write(3, "1000", 4 [pid 5823] <... openat resumed>) = 3 [pid 5825] <... write resumed>) = 4 [pid 5823] write(3, "1000", 4 [pid 5825] close(3 [pid 5823] <... write resumed>) = 4 [pid 5825] <... close resumed>) = 0 [pid 5823] close(3 [pid 5825] symlink("/dev/binderfs", "./binderfs" [pid 5824] write(3, "1000", 4 [pid 5825] <... symlink resumed>) = 0 [pid 5824] <... write resumed>) = 4 [pid 5823] <... close resumed>) = 0 [pid 5824] close(3 [pid 5823] symlink("/dev/binderfs", "./binderfs" [pid 5824] <... close resumed>) = 0 [pid 5825] write(1, "executing program\n", 18 [pid 5824] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5825] <... write resumed>) = 18 executing program [pid 5825] memfd_create("syzkaller", 0 executing program [pid 5824] write(1, "executing program\n", 18 [pid 5825] <... memfd_create resumed>) = 3 [pid 5824] <... write resumed>) = 18 [pid 5823] <... symlink resumed>) = 0 [pid 5825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5824] memfd_create("syzkaller", 0 [pid 5825] <... mmap resumed>) = 0x7fb9643a6000 [pid 5824] <... memfd_create resumed>) = 3 [pid 5823] write(1, "executing program\n", 18 [pid 5824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5823] <... write resumed>) = 18 [pid 5824] <... mmap resumed>) = 0x7fb9643a6000 executing program [pid 5823] memfd_create("syzkaller", 0) = 3 [pid 5823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5825] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5824] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5823] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5821] <... write resumed>) = 16777216 [pid 5821] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5821] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5821] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5821] close(3) = 0 [pid 5821] close(4) = 0 [pid 5821] mkdir("./bus", 0777) = 0 [pid 5821] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 268.226108][ T5821] loop3: detected capacity change from 0 to 32768 [pid 5821] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5821] chdir("./bus") = 0 [pid 5821] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5821] exit_group(0) = ? [pid 5821] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5821, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=38 /* 0.38 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./35/binderfs") = 0 [pid 5638] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./35/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./35") = 0 [pid 5638] mkdir("./36", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5826 attached [pid 5826] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5826 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5826] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5826] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5826] chdir("./36") = 0 [pid 5826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5826] setpgid(0, 0) = 0 [pid 5826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5826] write(3, "1000", 4) = 4 [pid 5826] close(3) = 0 [pid 5826] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5826] write(1, "executing program\n", 18) = 18 [pid 5826] memfd_create("syzkaller", 0) = 3 [pid 5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5822] <... write resumed>) = 16777216 [pid 5826] <... mmap resumed>) = 0x7fb9643a6000 [pid 5822] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5822] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5822] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5822] close(3) = 0 [pid 5822] close(4) = 0 [pid 5822] mkdir("./bus", 0777) = 0 [pid 5822] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 268.613882][ T5822] loop1: detected capacity change from 0 to 32768 [pid 5822] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5822] chdir("./bus") = 0 [pid 5822] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5822] exit_group(0) = ? [pid 5822] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5822, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=36 /* 0.36 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./35/binderfs") = 0 [pid 5636] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./35/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./35") = 0 [pid 5636] mkdir("./36", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5827 attached , child_tidptr=0x55555d1b46d0) = 5827 [pid 5827] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5827] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5827] chdir("./36") = 0 [pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5827] setpgid(0, 0) = 0 [pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5827] write(3, "1000", 4) = 4 [pid 5827] close(3) = 0 [pid 5827] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5827] write(1, "executing program\n", 18) = 18 [pid 5827] memfd_create("syzkaller", 0 [pid 5826] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5827] <... memfd_create resumed>) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5825] <... write resumed>) = 16777216 [pid 5825] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5825] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5825] close(3) = 0 [pid 5825] close(4) = 0 [pid 5825] mkdir("./bus", 0777) = 0 [ 269.038306][ T5825] loop2: detected capacity change from 0 to 32768 [pid 5825] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5825] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5825] chdir("./bus") = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5825] exit_group(0) = ? [pid 5825] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5825, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=23 /* 0.23 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./35/binderfs") = 0 [pid 5637] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./35/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./35" [pid 5824] <... write resumed>) = 16777216 [pid 5824] munmap(0x7fb9643a6000, 138412032 [pid 5823] <... write resumed>) = 16777216 [pid 5823] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... rmdir resumed>) = 0 [pid 5637] mkdir("./36", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5824] <... munmap resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5823] <... munmap resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5824] <... openat resumed>) = 4 [pid 5823] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... ioctl resumed>) = 0 [pid 5637] close(3 [pid 5823] <... openat resumed>) = 4 [pid 5637] <... close resumed>) = 0 [pid 5824] ioctl(4, LOOP_SET_FD, 3 [pid 5823] ioctl(4, LOOP_SET_FD, 3 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5824] <... ioctl resumed>) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5824] close(3 [pid 5823] <... ioctl resumed>) = 0 [pid 5824] <... close resumed>) = 0 [pid 5823] close(3 [pid 5824] close(4 [pid 5823] <... close resumed>) = 0 [pid 5824] <... close resumed>) = 0 [pid 5823] close(4 [pid 5824] mkdir("./bus", 0777ci2-upstream-fs/strace-static-x86_64: Process 5828 attached ) = 0 [pid 5823] <... close resumed>) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5828 [pid 5823] mkdir("./bus", 0777 [pid 5828] set_robust_list(0x55555d1b46e0, 24 [pid 5823] <... mkdir resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5828] <... set_robust_list resumed>) = 0 [pid 5824] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5828] rt_sigprocmask(SIG_SETMASK, [] [pid 5823] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5828] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5828] chdir("./36") = 0 [pid 5828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5828] setpgid(0, 0) = 0 [pid 5828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5828] write(3, "1000", 4) = 4 [pid 5828] close(3) = 0 [pid 5828] symlink("/dev/binderfs", "./binderfs") = 0 [ 269.327491][ T5824] loop0: detected capacity change from 0 to 32768 [ 269.328410][ T5823] loop4: detected capacity change from 0 to 32768 [pid 5828] write(1, "executing program\n", 18) = 18 executing program [pid 5828] memfd_create("syzkaller", 0) = 3 [pid 5828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5824] <... mount resumed>) = 0 [pid 5824] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5824] chdir("./bus") = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5824] exit_group(0) = ? [pid 5823] <... mount resumed>) = 0 [pid 5824] +++ exited with 0 +++ [pid 5823] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5824, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5823] <... openat resumed>) = 3 [pid 5634] <... restart_syscall resumed>) = 0 [pid 5823] chdir("./bus") = 0 [pid 5823] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5823] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5823] exit_group(0 [pid 5634] fstat(3 [pid 5823] <... exit_group resumed>) = ? [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5823] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5823, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=38 /* 0.38 s */} --- [pid 5634] unlink("./34/binderfs") = 0 [pid 5634] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./34", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5827] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./34/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./34/binderfs") = 0 [pid 5640] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./34/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... umount2 resumed>) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./34/bus") = 0 [pid 5640] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] getdents64(3 [pid 5640] newfstatat(AT_FDCWD, "./34/bus" [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./34/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] close(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... close resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./34/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] rmdir("./34" [pid 5640] <... openat resumed>) = 4 [pid 5634] <... rmdir resumed>) = 0 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5634] mkdir("./35", 0777 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./34/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./34") = 0 [pid 5640] mkdir("./35", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5634] <... mkdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5634] <... ioctl resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] close(3 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5829 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5830 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5829 attached ci2-upstream-fs/strace-static-x86_64: Process 5830 attached [pid 5829] set_robust_list(0x55555d1b46e0, 24 [pid 5830] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5830] rt_sigprocmask(SIG_SETMASK, [] [pid 5829] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5830] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5830] chdir("./35" [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5830] <... chdir resumed>) = 0 [pid 5830] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5829] chdir("./35" [pid 5830] <... prctl resumed>) = 0 [pid 5830] setpgid(0, 0 [pid 5829] <... chdir resumed>) = 0 [pid 5830] <... setpgid resumed>) = 0 [pid 5830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5829] setpgid(0, 0 [pid 5830] <... openat resumed>) = 3 [pid 5830] write(3, "1000", 4 [pid 5829] <... setpgid resumed>) = 0 [pid 5830] <... write resumed>) = 4 [pid 5830] close(3) = 0 [pid 5830] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5830] write(1, "executing program\n", 18 [pid 5829] <... openat resumed>) = 3 [pid 5830] <... write resumed>) = 18 executing program [pid 5829] write(3, "1000", 4 [pid 5830] memfd_create("syzkaller", 0 [pid 5829] <... write resumed>) = 4 [pid 5830] <... memfd_create resumed>) = 3 [pid 5829] close(3 [pid 5830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5829] <... close resumed>) = 0 [pid 5829] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5829] write(1, "executing program\n", 18) = 18 [pid 5829] memfd_create("syzkaller", 0) = 3 [pid 5829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5828] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5826] <... write resumed>) = 16777216 [pid 5826] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5826] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5826] close(3) = 0 [pid 5826] close(4 [pid 5830] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5826] <... close resumed>) = 0 [pid 5826] mkdir("./bus", 0777) = 0 [pid 5826] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5829] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5826] <... mount resumed>) = 0 [pid 5826] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5826] chdir("./bus") = 0 [pid 5826] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5826] exit_group(0) = ? [pid 5826] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5826, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./36/binderfs") = 0 [pid 5638] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./36/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./36/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./36") = 0 [pid 5638] mkdir("./37", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5831 attached , child_tidptr=0x55555d1b46d0) = 5831 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5831] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5831] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5831] chdir("./37") = 0 [pid 5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5831] setpgid(0, 0) = 0 [pid 5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5831] write(3, "1000", 4) = 4 [pid 5831] close(3) = 0 [pid 5831] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5831] write(1, "executing program\n", 18) = 18 executing program [pid 5831] memfd_create("syzkaller", 0 [pid 5827] <... write resumed>) = 16777216 [pid 5831] <... memfd_create resumed>) = 3 [pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5827] munmap(0x7fb9643a6000, 138412032 [pid 5831] <... mmap resumed>) = 0x7fb9643a6000 [pid 5827] <... munmap resumed>) = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5827] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5827] close(3) = 0 [pid 5827] close(4) = 0 [pid 5827] mkdir("./bus", 0777) = 0 [pid 5827] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5827] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5827] chdir("./bus") = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5827] exit_group(0) = ? [pid 5827] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./36/binderfs") = 0 [pid 5636] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./36/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./36/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./36") = 0 [pid 5636] mkdir("./37", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5828] <... write resumed>) = 16777216 ci2-upstream-fs/strace-static-x86_64: Process 5832 attached [pid 5828] munmap(0x7fb9643a6000, 138412032 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5832 [pid 5832] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5832] <... set_robust_list resumed>) = 0 [pid 5832] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5832] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5832] chdir("./37") = 0 [pid 5832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5832] setpgid(0, 0) = 0 [pid 5828] <... munmap resumed>) = 0 [pid 5832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5828] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5832] write(3, "1000", 4 [pid 5828] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5832] <... write resumed>) = 4 [pid 5832] close(3 [pid 5828] close(3 [pid 5832] <... close resumed>) = 0 [pid 5828] <... close resumed>) = 0 [pid 5832] symlink("/dev/binderfs", "./binderfs" [pid 5828] close(4 [pid 5832] <... symlink resumed>) = 0 [pid 5828] <... close resumed>) = 0 [pid 5831] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5832] write(1, "executing program\n", 18 executing program [pid 5828] mkdir("./bus", 0777 [pid 5832] <... write resumed>) = 18 [pid 5828] <... mkdir resumed>) = 0 [pid 5832] memfd_create("syzkaller", 0) = 3 [pid 5828] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5828] <... mount resumed>) = 0 [pid 5828] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5828] chdir("./bus") = 0 [pid 5828] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5828] exit_group(0) = ? [pid 5828] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5828, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=39 /* 0.39 s */} --- [pid 5830] <... write resumed>) = 16777216 [pid 5637] umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./36/binderfs") = 0 [pid 5637] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... munmap resumed>) = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5830] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5830] close(3) = 0 [pid 5830] close(4) = 0 [pid 5830] mkdir("./bus", 0777) = 0 [pid 5830] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] <... umount2 resumed>) = 0 [pid 5830] <... mount resumed>) = 0 [pid 5830] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... openat resumed>) = 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5830] chdir("./bus" [pid 5637] newfstatat(AT_FDCWD, "./36/bus" [pid 5830] <... chdir resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5830] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5830] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5830] exit_group(0 [pid 5637] fstat(4 [pid 5830] <... exit_group resumed>) = ? [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5830] +++ exited with 0 +++ [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./36/bus") = 0 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5830, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5637] close(3) = 0 [pid 5634] fstat(3 [pid 5637] rmdir("./36" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] getdents64(3 [pid 5637] mkdir("./37", 0777 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... mkdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./35/binderfs" [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./35/binderfs") = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5634] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... ioctl resumed>) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5833 ci2-upstream-fs/strace-static-x86_64: Process 5833 attached [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5833] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5833] <... set_robust_list resumed>) = 0 [pid 5833] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5833] chdir("./37") = 0 [pid 5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5833] setpgid(0, 0) = 0 [pid 5833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5829] <... write resumed>) = 16777216 [pid 5833] <... openat resumed>) = 3 [pid 5829] munmap(0x7fb9643a6000, 138412032 [pid 5833] write(3, "1000", 4) = 4 [pid 5833] close(3) = 0 [pid 5833] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5833] write(1, "executing program\n", 18) = 18 [pid 5634] <... umount2 resumed>) = 0 [pid 5833] memfd_create("syzkaller", 0 [pid 5634] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5833] <... memfd_create resumed>) = 3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5634] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5833] <... mmap resumed>) = 0x7fb9643a6000 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5829] <... munmap resumed>) = 0 [pid 5829] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5832] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] fstat(4 [pid 5829] <... openat resumed>) = 4 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5829] ioctl(4, LOOP_SET_FD, 3 [pid 5634] getdents64(4 [pid 5829] <... ioctl resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5829] close(3 [pid 5634] getdents64(4 [pid 5829] <... close resumed>) = 0 [pid 5829] close(4) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5829] mkdir("./bus", 0777 [pid 5634] close(4) = 0 [pid 5634] rmdir("./35/bus") = 0 [ 271.381715][ T5829] set_capacity_and_notify: 4 callbacks suppressed [ 271.381737][ T5829] loop4: detected capacity change from 0 to 32768 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./35") = 0 [pid 5634] mkdir("./36", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5829] <... mkdir resumed>) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5829] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5834 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5834 attached [pid 5834] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5834] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5834] chdir("./36") = 0 [pid 5834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5834] setpgid(0, 0) = 0 [pid 5834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5834] write(3, "1000", 4) = 4 [pid 5834] close(3) = 0 [pid 5834] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5834] write(1, "executing program\n", 18) = 18 [pid 5829] <... mount resumed>) = 0 [pid 5834] memfd_create("syzkaller", 0 [pid 5829] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5834] <... memfd_create resumed>) = 3 [pid 5829] <... openat resumed>) = 3 [pid 5829] chdir("./bus") = 0 [pid 5834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5829] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5834] <... mmap resumed>) = 0x7fb9643a6000 [pid 5829] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5829] exit_group(0) = ? [pid 5829] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5829, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=31 /* 0.31 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./35", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./35/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./35/binderfs") = 0 [pid 5640] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5640] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./35/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./35/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./35/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./35/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./35") = 0 [pid 5640] mkdir("./36", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5835 [pid 5640] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5835 attached , NULL, 8) = 0 [pid 5835] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5835] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5835] chdir("./36") = 0 [pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5835] setpgid(0, 0) = 0 [pid 5835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "1000", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5835] write(1, "executing program\n", 18) = 18 [pid 5833] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5835] memfd_create("syzkaller", 0) = 3 [pid 5835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5831] <... write resumed>) = 16777216 [pid 5831] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5831] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5831] close(3) = 0 [pid 5831] close(4) = 0 [pid 5831] mkdir("./bus", 0777) = 0 [pid 5831] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [ 272.003143][ T5831] loop3: detected capacity change from 0 to 32768 [pid 5834] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5831] <... mount resumed>) = 0 [pid 5831] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5831] chdir("./bus") = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5831] exit_group(0) = ? [pid 5831] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5831, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=29 /* 0.29 s */} --- [pid 5638] umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./37/binderfs") = 0 [pid 5638] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5835] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./37/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./37") = 0 [pid 5638] mkdir("./38", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5836 attached [pid 5836] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5836 [pid 5836] <... set_robust_list resumed>) = 0 [pid 5836] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5836] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5836] chdir("./38") = 0 [pid 5836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5836] setpgid(0, 0) = 0 [pid 5836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5836] write(3, "1000", 4) = 4 [pid 5836] close(3) = 0 [pid 5836] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5836] write(1, "executing program\n", 18) = 18 executing program [pid 5836] memfd_create("syzkaller", 0) = 3 [pid 5836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5832] <... write resumed>) = 16777216 [pid 5832] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5832] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5832] close(3) = 0 [pid 5832] close(4) = 0 [pid 5832] mkdir("./bus", 0777) = 0 [ 272.517625][ T5832] loop1: detected capacity change from 0 to 32768 [pid 5832] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5832] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5832] chdir("./bus") = 0 [pid 5832] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5832] exit_group(0) = ? [pid 5832] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5832, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=22 /* 0.22 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./37/binderfs" [pid 5836] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./37/binderfs") = 0 [pid 5636] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5833] <... write resumed>) = 16777216 [pid 5636] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5833] munmap(0x7fb9643a6000, 138412032 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./37/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./37" [pid 5833] <... munmap resumed>) = 0 [pid 5833] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5833] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... rmdir resumed>) = 0 [pid 5833] <... ioctl resumed>) = 0 [pid 5833] close(3 [pid 5636] mkdir("./38", 0777 [pid 5833] <... close resumed>) = 0 [pid 5833] close(4) = 0 [pid 5636] <... mkdir resumed>) = 0 [pid 5833] mkdir("./bus", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5833] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5837 attached , child_tidptr=0x55555d1b46d0) = 5837 [pid 5837] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5837] <... set_robust_list resumed>) = 0 [pid 5837] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [ 272.816452][ T5833] loop2: detected capacity change from 0 to 32768 [pid 5837] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5837] chdir("./38") = 0 [pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5837] setpgid(0, 0) = 0 [pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1000", 4) = 4 [pid 5837] close(3) = 0 [pid 5837] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5837] write(1, "executing program\n", 18) = 18 executing program [pid 5837] memfd_create("syzkaller", 0) = 3 [pid 5833] <... mount resumed>) = 0 [pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5833] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5837] <... mmap resumed>) = 0x7fb9643a6000 [pid 5833] <... openat resumed>) = 3 [pid 5833] chdir("./bus") = 0 [pid 5833] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5833] exit_group(0) = ? [pid 5833] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5833, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=31 /* 0.31 s */} --- [pid 5637] umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./37/binderfs") = 0 [pid 5637] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./37/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./37") = 0 [pid 5637] mkdir("./38", 0777 [pid 5834] <... write resumed>) = 16777216 [pid 5637] <... mkdir resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5834] munmap(0x7fb9643a6000, 138412032 [pid 5637] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5838 attached [pid 5838] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5838 [pid 5838] <... set_robust_list resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5838] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5838] chdir("./38") = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5838] setpgid(0, 0) = 0 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4 [pid 5834] <... munmap resumed>) = 0 [pid 5838] <... write resumed>) = 4 [pid 5838] close(3) = 0 [pid 5838] symlink("/dev/binderfs", "./binderfs" [pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5838] <... symlink resumed>) = 0 [pid 5834] <... openat resumed>) = 4 [pid 5834] ioctl(4, LOOP_SET_FD, 3 [pid 5838] write(1, "executing program\n", 18) = 18 [pid 5838] memfd_create("syzkaller", 0 [pid 5834] <... ioctl resumed>) = 0 executing program [pid 5838] <... memfd_create resumed>) = 3 [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5834] close(3) = 0 [pid 5834] close(4) = 0 [pid 5834] mkdir("./bus", 0777 [pid 5835] <... write resumed>) = 16777216 [pid 5834] <... mkdir resumed>) = 0 [pid 5835] munmap(0x7fb9643a6000, 138412032 [ 273.187203][ T5834] loop0: detected capacity change from 0 to 32768 [pid 5834] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5835] <... munmap resumed>) = 0 [pid 5835] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5835] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5835] close(3) = 0 [pid 5835] close(4) = 0 [pid 5835] mkdir("./bus", 0777) = 0 [pid 5835] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5834] <... mount resumed>) = 0 [pid 5834] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5834] chdir("./bus") = 0 [pid 5834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 273.281309][ T5835] loop4: detected capacity change from 0 to 32768 [pid 5834] exit_group(0) = ? [pid 5834] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5834, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=30 /* 0.30 s */} --- [pid 5835] <... mount resumed>) = 0 [pid 5634] umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5835] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5835] <... openat resumed>) = 3 [pid 5835] chdir("./bus" [pid 5634] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5835] <... chdir resumed>) = 0 [pid 5835] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5634] <... openat resumed>) = 3 [pid 5835] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5835] exit_group(0 [pid 5634] getdents64(3 [pid 5835] <... exit_group resumed>) = ? [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./36/binderfs") = 0 [pid 5835] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5835, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... restart_syscall resumed>) = 0 [pid 5640] umount2("./36", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./36/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./36/binderfs" [pid 5837] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./36/binderfs") = 0 [pid 5640] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5836] <... write resumed>) = 16777216 [pid 5836] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./36/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] <... umount2 resumed>) = 0 [pid 5634] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] fstat(4 [pid 5640] newfstatat(AT_FDCWD, "./36/bus" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5836] <... munmap resumed>) = 0 [pid 5640] umount2("./36/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] getdents64(4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] openat(AT_FDCWD, "./36/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5836] <... openat resumed>) = 4 [pid 5640] <... openat resumed>) = 4 [pid 5634] close(4 [pid 5836] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... close resumed>) = 0 [pid 5640] fstat(4 [pid 5634] rmdir("./36/bus" [pid 5836] <... ioctl resumed>) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4 [pid 5634] <... rmdir resumed>) = 0 [pid 5836] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(3 [pid 5640] getdents64(4 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5836] <... close resumed>) = 0 [pid 5836] close(4) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(3 [pid 5836] mkdir("./bus", 0777) = 0 [pid 5640] close(4 [pid 5634] <... close resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5634] rmdir("./36" [pid 5640] rmdir("./36/bus" [pid 5634] <... rmdir resumed>) = 0 [pid 5836] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5640] <... rmdir resumed>) = 0 [pid 5640] getdents64(3 [pid 5634] mkdir("./37", 0777 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... mkdir resumed>) = 0 [pid 5640] close(3) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] rmdir("./36" [pid 5634] <... openat resumed>) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 273.537895][ T5836] loop3: detected capacity change from 0 to 32768 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] mkdir("./37", 0777) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5839 attached [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5839 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5839] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5839] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5839] chdir("./37" [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5836] <... mount resumed>) = 0 [pid 5839] <... chdir resumed>) = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5836] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5839] <... prctl resumed>) = 0 [pid 5836] <... openat resumed>) = 3 [pid 5640] <... ioctl resumed>) = 0 [pid 5839] setpgid(0, 0 [pid 5836] chdir("./bus" [pid 5640] close(3 [pid 5839] <... setpgid resumed>) = 0 [pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5836] <... chdir resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5836] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5839] <... openat resumed>) = 3 [pid 5836] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5836] exit_group(0 [pid 5839] write(3, "1000", 4 [pid 5836] <... exit_group resumed>) = ? [pid 5839] <... write resumed>) = 4 [pid 5839] close(3) = 0 [pid 5839] symlink("/dev/binderfs", "./binderfs") = 0 ci2-upstream-fs/strace-static-x86_64: Process 5840 attached [pid 5840] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5840 [pid 5840] rt_sigprocmask(SIG_SETMASK, [] [pid 5839] write(1, "executing program\n", 18 [pid 5836] +++ exited with 0 +++ [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5839] <... write resumed>) = 18 executing program [pid 5840] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5839] memfd_create("syzkaller", 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5840] chdir("./37") = 0 [pid 5839] <... memfd_create resumed>) = 3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5836, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=26 /* 0.26 s */} --- [pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5840] <... prctl resumed>) = 0 [pid 5839] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5840] setpgid(0, 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5840] <... setpgid resumed>) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] fstat(3 [pid 5840] <... openat resumed>) = 3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5840] write(3, "1000", 4) = 4 [pid 5638] umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5840] close(3) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5840] symlink("/dev/binderfs", "./binderfs" [pid 5638] newfstatat(AT_FDCWD, "./38/binderfs" [pid 5840] <... symlink resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./38/binderfs" [pid 5840] write(1, "executing program\n", 18 [pid 5638] <... unlink resumed>) = 0 [pid 5840] <... write resumed>) = 18 executing program [pid 5638] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5840] memfd_create("syzkaller", 0) = 3 [pid 5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5838] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./38/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./38") = 0 [pid 5638] mkdir("./39", 0777) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5841 attached , child_tidptr=0x55555d1b46d0) = 5841 [pid 5841] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5841] <... set_robust_list resumed>) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5841] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5841] chdir("./39") = 0 [pid 5841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5841] setpgid(0, 0) = 0 [pid 5841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5841] write(3, "1000", 4) = 4 [pid 5841] close(3) = 0 [pid 5841] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5841] write(1, "executing program\n", 18) = 18 [pid 5841] memfd_create("syzkaller", 0) = 3 [pid 5841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5837] <... write resumed>) = 16777216 [pid 5837] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5837] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5837] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5837] close(3) = 0 [pid 5837] close(4) = 0 [pid 5837] mkdir("./bus", 0777) = 0 [pid 5837] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5837] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5837] chdir("./bus") = 0 [pid 5837] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5837] exit_group(0) = ? [ 274.594363][ T5837] loop1: detected capacity change from 0 to 32768 [pid 5837] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./38/binderfs") = 0 [pid 5636] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./38/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./38") = 0 [pid 5636] mkdir("./39", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5842 attached [pid 5842] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5842 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5842] <... set_robust_list resumed>) = 0 [pid 5842] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5842] chdir("./39") = 0 [pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5842] setpgid(0, 0) = 0 [pid 5842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5842] write(3, "1000", 4) = 4 [pid 5842] close(3) = 0 [pid 5842] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5842] write(1, "executing program\n", 18 [pid 5838] <... write resumed>) = 16777216 [pid 5842] <... write resumed>) = 18 [pid 5842] memfd_create("syzkaller", 0) = 3 executing program [pid 5842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5838] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5838] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5838] close(3) = 0 [pid 5838] close(4) = 0 [pid 5838] mkdir("./bus", 0777) = 0 [pid 5839] <... write resumed>) = 16777216 [pid 5838] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [ 274.956009][ T5838] loop2: detected capacity change from 0 to 32768 [pid 5839] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5839] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5839] close(3) = 0 [pid 5839] close(4) = 0 [pid 5839] mkdir("./bus", 0777 [pid 5838] <... mount resumed>) = 0 [pid 5839] <... mkdir resumed>) = 0 [pid 5838] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5839] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5838] <... openat resumed>) = 3 [pid 5838] chdir("./bus") = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5838] exit_group(0) = ? [pid 5839] <... mount resumed>) = 0 [pid 5839] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5838] +++ exited with 0 +++ [pid 5839] chdir("./bus" [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5838, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=27 /* 0.27 s */} --- [pid 5839] <... chdir resumed>) = 0 [ 275.027433][ T5839] loop0: detected capacity change from 0 to 32768 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] <... restart_syscall resumed>) = 0 [pid 5839] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5839] exit_group(0) = ? [pid 5637] umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5839] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=33 /* 0.33 s */} --- [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3 [pid 5634] umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] getdents64(3 [pid 5634] <... openat resumed>) = 3 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] fstat(3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] newfstatat(AT_FDCWD, "./38/binderfs" [pid 5634] getdents64(3 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] unlink("./38/binderfs" [pid 5634] umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... unlink resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] unlink("./37/binderfs") = 0 [pid 5634] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5842] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... umount2 resumed>) = 0 [pid 5637] newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./37/bus" [pid 5637] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5634] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] getdents64(4 [pid 5634] <... openat resumed>) = 4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5634] fstat(4 [pid 5637] <... close resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] rmdir("./38/bus" [pid 5634] getdents64(4 [pid 5637] <... rmdir resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5637] close(3 [pid 5634] rmdir("./37/bus" [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./38") = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5637] mkdir("./39", 0777) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./37" [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5634] <... rmdir resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] mkdir("./38", 0777 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] <... mkdir resumed>) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ci2-upstream-fs/strace-static-x86_64: Process 5843 attached [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5843] set_robust_list(0x55555d1b46e0, 24 [pid 5634] close(3) = 0 [pid 5843] <... set_robust_list resumed>) = 0 [pid 5843] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5843 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5843] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5843] chdir("./39" [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5843] <... chdir resumed>) = 0 [pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5843] setpgid(0, 0) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5844 attached [pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5844 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5844] set_robust_list(0x55555d1b46e0, 24 [pid 5843] <... openat resumed>) = 3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5844] <... set_robust_list resumed>) = 0 [pid 5844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5843] write(3, "1000", 4 [pid 5844] chdir("./38" [pid 5843] <... write resumed>) = 4 [pid 5844] <... chdir resumed>) = 0 [pid 5844] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5843] close(3 [pid 5844] <... prctl resumed>) = 0 [pid 5843] <... close resumed>) = 0 [pid 5844] setpgid(0, 0 [pid 5843] symlink("/dev/binderfs", "./binderfs" [pid 5844] <... setpgid resumed>) = 0 [pid 5843] <... symlink resumed>) = 0 [pid 5844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5843] write(1, "executing program\n", 18 [pid 5844] <... openat resumed>) = 3 [pid 5843] <... write resumed>) = 18 [pid 5840] <... write resumed>) = 16777216 [pid 5844] write(3, "1000", 4 executing program [pid 5843] memfd_create("syzkaller", 0 [pid 5844] <... write resumed>) = 4 [pid 5844] close(3 [pid 5843] <... memfd_create resumed>) = 3 [pid 5844] <... close resumed>) = 0 [pid 5843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5844] symlink("/dev/binderfs", "./binderfs" [pid 5843] <... mmap resumed>) = 0x7fb9643a6000 [pid 5840] munmap(0x7fb9643a6000, 138412032 [pid 5844] <... symlink resumed>) = 0 executing program [pid 5844] write(1, "executing program\n", 18) = 18 [pid 5844] memfd_create("syzkaller", 0) = 3 [pid 5844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5840] <... munmap resumed>) = 0 [pid 5840] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5840] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5840] close(3) = 0 [pid 5840] close(4) = 0 [pid 5840] mkdir("./bus", 0777) = 0 [pid 5840] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5841] <... write resumed>) = 16777216 [pid 5840] <... mount resumed>) = 0 [pid 5841] munmap(0x7fb9643a6000, 138412032 [pid 5840] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5840] chdir("./bus") = 0 [pid 5840] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5840] exit_group(0) = ? [pid 5840] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5840, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=30 /* 0.30 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./37", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5841] <... munmap resumed>) = 0 [pid 5640] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5841] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5640] fstat(3 [pid 5841] ioctl(4, LOOP_SET_FD, 3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5841] <... ioctl resumed>) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./37/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5841] close(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5841] <... close resumed>) = 0 [pid 5841] close(4) = 0 [pid 5841] mkdir("./bus", 0777 [pid 5640] newfstatat(AT_FDCWD, "./37/binderfs" [pid 5841] <... mkdir resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./37/binderfs" [pid 5841] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5841] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] <... unlink resumed>) = 0 [pid 5841] <... openat resumed>) = 3 [pid 5640] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5841] chdir("./bus") = 0 [pid 5841] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5841] exit_group(0) = ? [pid 5841] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5841, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=38 /* 0.38 s */} --- [pid 5638] umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./39/binderfs") = 0 [pid 5638] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./37/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./37/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./37/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./37/bus" [pid 5638] <... umount2 resumed>) = 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5638] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] close(3 [pid 5638] newfstatat(AT_FDCWD, "./39/bus" [pid 5640] <... close resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] rmdir("./37" [pid 5638] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... rmdir resumed>) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] mkdir("./38", 0777) = 0 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5638] close(4) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3 [pid 5638] rmdir("./39/bus" [pid 5640] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3ci2-upstream-fs/strace-static-x86_64: Process 5845 attached [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5845 [pid 5638] <... close resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] rmdir("./39") = 0 [pid 5845] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5845] <... set_robust_list resumed>) = 0 [pid 5845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5638] mkdir("./40", 0777 [pid 5845] chdir("./38" [pid 5638] <... mkdir resumed>) = 0 [pid 5845] <... chdir resumed>) = 0 [pid 5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5845] setpgid(0, 0) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5638] <... openat resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5845] write(3, "1000", 4 [pid 5638] close(3 [pid 5845] <... write resumed>) = 4 [pid 5638] <... close resumed>) = 0 [pid 5845] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5845] symlink("/dev/binderfs", "./binderfs" [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5845] <... symlink resumed>) = 0 [pid 5845] write(1, "executing program\n", 18) = 18 [pid 5845] memfd_create("syzkaller", 0) = 3 [pid 5843] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216ci2-upstream-fs/strace-static-x86_64: Process 5846 attached [pid 5845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5846 executing program [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5846] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5846] chdir("./40" [pid 5844] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5846] <... chdir resumed>) = 0 [pid 5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5846] setpgid(0, 0) = 0 [pid 5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5846] write(3, "1000", 4) = 4 [pid 5846] close(3) = 0 [pid 5846] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5846] write(1, "executing program\n", 18) = 18 [pid 5846] memfd_create("syzkaller", 0) = 3 [pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5842] <... write resumed>) = 16777216 [pid 5842] munmap(0x7fb9643a6000, 138412032 [pid 5845] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5842] <... munmap resumed>) = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5842] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5842] close(3) = 0 [pid 5842] close(4) = 0 [pid 5842] mkdir("./bus", 0777) = 0 [pid 5842] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5842] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5842] chdir("./bus") = 0 [pid 5842] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5842] exit_group(0) = ? [pid 5842] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5842, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=32 /* 0.32 s */} --- [pid 5636] umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./39/binderfs") = 0 [pid 5636] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5846] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... umount2 resumed>) = 0 [pid 5636] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./39/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./39/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./39") = 0 [pid 5636] mkdir("./40", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5847 attached , child_tidptr=0x55555d1b46d0) = 5847 [pid 5847] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5847] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5847] chdir("./40") = 0 [pid 5847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5847] setpgid(0, 0) = 0 [pid 5847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5847] write(3, "1000", 4) = 4 [pid 5847] close(3) = 0 [pid 5847] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5847] write(1, "executing program\n", 18) = 18 executing program [pid 5847] memfd_create("syzkaller", 0) = 3 [pid 5847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5843] <... write resumed>) = 16777216 [pid 5843] munmap(0x7fb9643a6000, 138412032 [pid 5844] <... write resumed>) = 16777216 [pid 5844] munmap(0x7fb9643a6000, 138412032 [pid 5843] <... munmap resumed>) = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5843] ioctl(4, LOOP_SET_FD, 3 [pid 5847] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5843] <... ioctl resumed>) = 0 [pid 5843] close(3) = 0 [pid 5843] close(4 [pid 5844] <... munmap resumed>) = 0 [pid 5843] <... close resumed>) = 0 [pid 5843] mkdir("./bus", 0777 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5843] <... mkdir resumed>) = 0 [pid 5844] <... openat resumed>) = 4 [pid 5843] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [ 277.037251][ T5843] set_capacity_and_notify: 3 callbacks suppressed [ 277.037273][ T5843] loop2: detected capacity change from 0 to 32768 [pid 5844] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5844] close(3) = 0 [pid 5844] close(4) = 0 [pid 5844] mkdir("./bus", 0777) = 0 [pid 5844] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5843] <... mount resumed>) = 0 [pid 5843] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [ 277.081382][ T5844] loop0: detected capacity change from 0 to 32768 [pid 5843] chdir("./bus") = 0 [pid 5843] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5843] exit_group(0) = ? [pid 5843] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5843, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5637] umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./39/binderfs") = 0 [pid 5637] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5844] <... mount resumed>) = 0 [pid 5844] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5844] chdir("./bus") = 0 [pid 5844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5844] exit_group(0) = ? [pid 5844] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5844, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=30 /* 0.30 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./38/binderfs") = 0 [pid 5634] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5637] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./39/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./39/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./39") = 0 [pid 5637] mkdir("./40", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5634] <... umount2 resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./38/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOWci2-upstream-fs/strace-static-x86_64: Process 5848 attached [pid 5848] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5848] <... set_robust_list resumed>) = 0 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5848 [pid 5848] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... openat resumed>) = 4 [pid 5848] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] fstat(4 [pid 5848] chdir("./40" [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5848] <... chdir resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] getdents64(4 [pid 5848] <... prctl resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5848] setpgid(0, 0 [pid 5634] getdents64(4 [pid 5848] <... setpgid resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] close(4) = 0 [pid 5848] <... openat resumed>) = 3 [pid 5634] rmdir("./38/bus" [pid 5848] write(3, "1000", 4 [pid 5634] <... rmdir resumed>) = 0 [pid 5848] <... write resumed>) = 4 [pid 5848] close(3) = 0 [pid 5848] symlink("/dev/binderfs", "./binderfs" [pid 5634] getdents64(3 [pid 5848] <... symlink resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5848] write(1, "executing program\n", 18 [pid 5634] rmdir("./38" [pid 5848] <... write resumed>) = 18 executing program [pid 5848] memfd_create("syzkaller", 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5848] <... memfd_create resumed>) = 3 [pid 5848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5634] mkdir("./39", 0777 [pid 5846] <... write resumed>) = 16777216 [pid 5848] <... mmap resumed>) = 0x7fb9643a6000 [pid 5846] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... mkdir resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5849 attached , child_tidptr=0x55555d1b46d0) = 5849 [pid 5849] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5846] <... munmap resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5846] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5846] <... openat resumed>) = 4 [pid 5846] ioctl(4, LOOP_SET_FD, 3 [pid 5849] chdir("./39" [pid 5846] <... ioctl resumed>) = 0 [pid 5849] <... chdir resumed>) = 0 [pid 5846] close(3 [pid 5845] <... write resumed>) = 16777216 [pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5846] <... close resumed>) = 0 [pid 5845] munmap(0x7fb9643a6000, 138412032 [pid 5846] close(4) = 0 [pid 5849] <... prctl resumed>) = 0 [pid 5846] mkdir("./bus", 0777 [pid 5849] setpgid(0, 0 [pid 5846] <... mkdir resumed>) = 0 [pid 5849] <... setpgid resumed>) = 0 [pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5849] write(3, "1000", 4 [pid 5846] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5849] <... write resumed>) = 4 [pid 5849] close(3) = 0 [pid 5849] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5849] write(1, "executing program\n", 18) = 18 executing program [pid 5849] memfd_create("syzkaller", 0) = 3 [pid 5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [ 277.486628][ T5846] loop3: detected capacity change from 0 to 32768 [pid 5845] <... munmap resumed>) = 0 [pid 5845] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5845] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5845] close(3) = 0 [pid 5845] close(4) = 0 [pid 5845] mkdir("./bus", 0777 [pid 5846] <... mount resumed>) = 0 [pid 5845] <... mkdir resumed>) = 0 [pid 5846] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5845] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5846] chdir("./bus") = 0 [pid 5846] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5846] exit_group(0) = ? [ 277.569819][ T5845] loop4: detected capacity change from 0 to 32768 [pid 5846] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5846, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=23 /* 0.23 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5845] <... mount resumed>) = 0 [pid 5638] umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./40/binderfs" [pid 5845] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... unlink resumed>) = 0 [pid 5638] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5845] <... openat resumed>) = 3 [pid 5845] chdir("./bus") = 0 [pid 5845] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5845] exit_group(0) = ? [pid 5845] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5845, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=24 /* 0.24 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./38", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./38/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./38/binderfs") = 0 [pid 5640] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5848] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./40/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./40") = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] mkdir("./41", 0777) = 0 [pid 5640] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./38/bus" [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5640] umount2("./38/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... ioctl resumed>) = 0 [pid 5638] close(3 [pid 5640] openat(AT_FDCWD, "./38/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] fstat(4 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4ci2-upstream-fs/strace-static-x86_64: Process 5850 attached , 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./38/bus" [pid 5850] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... rmdir resumed>) = 0 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5850 [pid 5850] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5850] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] getdents64(3 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3 [pid 5850] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... close resumed>) = 0 [pid 5640] rmdir("./38" [pid 5850] chdir("./41" [pid 5640] <... rmdir resumed>) = 0 [pid 5850] <... chdir resumed>) = 0 [pid 5850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5850] setpgid(0, 0 [pid 5640] mkdir("./39", 0777 [pid 5850] <... setpgid resumed>) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5850] write(3, "1000", 4) = 4 [pid 5850] close(3 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5850] <... close resumed>) = 0 [pid 5640] <... ioctl resumed>) = 0 [pid 5850] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5640] close(3) = 0 [pid 5850] write(1, "executing program\n", 18) = 18 executing program [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5850] memfd_create("syzkaller", 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5850] <... memfd_create resumed>) = 3 [pid 5850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 ci2-upstream-fs/strace-static-x86_64: Process 5851 attached [pid 5851] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5851 [pid 5851] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5851] chdir("./39") = 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5851] setpgid(0, 0) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5851] write(3, "1000", 4) = 4 [pid 5851] close(3) = 0 [pid 5851] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5851] write(1, "executing program\n", 18) = 18 [pid 5851] memfd_create("syzkaller", 0) = 3 [pid 5851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5847] <... write resumed>) = 16777216 [pid 5847] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5847] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5847] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5847] close(3) = 0 [pid 5847] close(4) = 0 [pid 5847] mkdir("./bus", 0777) = 0 [pid 5847] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5849] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5847] <... mount resumed>) = 0 [pid 5847] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5847] chdir("./bus") = 0 [ 278.067053][ T5847] loop1: detected capacity change from 0 to 32768 [pid 5847] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5847] exit_group(0) = ? [pid 5847] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5847, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=38 /* 0.38 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./40/binderfs") = 0 [pid 5636] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5850] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./40/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./40") = 0 [pid 5636] mkdir("./41", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5852 attached , child_tidptr=0x55555d1b46d0) = 5852 [pid 5852] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5852] <... set_robust_list resumed>) = 0 [pid 5852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5852] chdir("./41") = 0 [pid 5852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5852] setpgid(0, 0) = 0 [pid 5852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1000", 4) = 4 [pid 5852] close(3) = 0 [pid 5852] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5852] write(1, "executing program\n", 18) = 18 [pid 5852] memfd_create("syzkaller", 0) = 3 [pid 5852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5851] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5848] <... write resumed>) = 16777216 [pid 5848] munmap(0x7fb9643a6000, 138412032 [pid 5852] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5848] <... munmap resumed>) = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5848] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5848] close(3) = 0 [pid 5848] close(4) = 0 [pid 5848] mkdir("./bus", 0777) = 0 [ 278.972019][ T5848] loop2: detected capacity change from 0 to 32768 [pid 5848] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5848] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5848] chdir("./bus") = 0 [pid 5848] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5848] exit_group(0) = ? [pid 5848] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5848, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=35 /* 0.35 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5637] umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./40/binderfs") = 0 [pid 5637] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./40/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./40") = 0 [pid 5637] mkdir("./41", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5853 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5853 attached [pid 5853] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5853] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5853] chdir("./41") = 0 [pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5853] setpgid(0, 0) = 0 [pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5849] <... write resumed>) = 16777216 [pid 5849] munmap(0x7fb9643a6000, 138412032 [pid 5853] <... openat resumed>) = 3 [pid 5853] write(3, "1000", 4) = 4 [pid 5853] close(3) = 0 [pid 5853] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5853] write(1, "executing program\n", 18) = 18 executing program [pid 5853] memfd_create("syzkaller", 0) = 3 [pid 5853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5850] <... write resumed>) = 16777216 [pid 5849] <... munmap resumed>) = 0 [pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5849] ioctl(4, LOOP_SET_FD, 3 [pid 5850] munmap(0x7fb9643a6000, 138412032 [pid 5849] <... ioctl resumed>) = 0 [pid 5849] close(3) = 0 [pid 5849] close(4) = 0 [pid 5849] mkdir("./bus", 0777) = 0 [pid 5849] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5850] <... munmap resumed>) = 0 [pid 5850] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5850] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5850] close(3) = 0 [pid 5850] close(4) = 0 [pid 5850] mkdir("./bus", 0777) = 0 [ 279.343576][ T5849] loop0: detected capacity change from 0 to 32768 [ 279.384961][ T5850] loop3: detected capacity change from 0 to 32768 [pid 5850] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5849] <... mount resumed>) = 0 [pid 5849] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5849] chdir("./bus") = 0 [pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5850] <... mount resumed>) = 0 [pid 5849] exit_group(0 [pid 5850] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5849] <... exit_group resumed>) = ? [pid 5850] <... openat resumed>) = 3 [pid 5850] chdir("./bus") = 0 [pid 5849] +++ exited with 0 +++ [pid 5850] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5849, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5850] exit_group(0 [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5850] <... exit_group resumed>) = ? [pid 5634] <... restart_syscall resumed>) = 0 [pid 5634] umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5850] +++ exited with 0 +++ [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5850, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5634] getdents64(3 [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./39/binderfs" [pid 5638] <... restart_syscall resumed>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5634] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./41/binderfs") = 0 [pid 5638] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5852] <... write resumed>) = 16777216 [pid 5852] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... umount2 resumed>) = 0 [pid 5852] <... munmap resumed>) = 0 [pid 5634] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5852] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5634] newfstatat(AT_FDCWD, "./39/bus" [pid 5852] <... openat resumed>) = 4 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5852] ioctl(4, LOOP_SET_FD, 3 [pid 5634] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5852] <... ioctl resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5852] close(3 [pid 5634] fstat(4 [pid 5852] <... close resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5852] close(4) = 0 [pid 5634] getdents64(4 [pid 5852] mkdir("./bus", 0777 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5852] <... mkdir resumed>) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./39/bus") = 0 [pid 5852] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./39") = 0 [pid 5634] mkdir("./40", 0777) = 0 [ 279.626770][ T5852] loop1: detected capacity change from 0 to 32768 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5638] <... umount2 resumed>) = 0 [pid 5634] <... ioctl resumed>) = 0 [pid 5638] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] close(3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] newfstatat(AT_FDCWD, "./41/bus" [pid 5852] <... mount resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5852] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5852] <... openat resumed>) = 3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5852] chdir("./bus" [pid 5638] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5852] <... chdir resumed>) = 0 [pid 5852] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5638] <... openat resumed>) = 4 ci2-upstream-fs/strace-static-x86_64: Process 5854 attached [pid 5852] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5854] set_robust_list(0x55555d1b46e0, 24 [pid 5852] exit_group(0 [pid 5638] getdents64(4 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5854 [pid 5854] <... set_robust_list resumed>) = 0 [pid 5852] <... exit_group resumed>) = ? [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5854] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5851] <... write resumed>) = 16777216 [pid 5854] chdir("./40" [pid 5851] munmap(0x7fb9643a6000, 138412032 [pid 5638] getdents64(4 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5854] <... chdir resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] close(4 [pid 5854] <... prctl resumed>) = 0 [pid 5852] +++ exited with 0 +++ [pid 5638] <... close resumed>) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5852, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5854] setpgid(0, 0 [pid 5638] rmdir("./41/bus" [pid 5854] <... setpgid resumed>) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] getdents64(3 [pid 5636] umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5854] <... openat resumed>) = 3 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5854] write(3, "1000", 4) = 4 [pid 5636] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] close(3 [pid 5636] <... openat resumed>) = 3 [pid 5854] close(3 [pid 5638] <... close resumed>) = 0 [pid 5854] <... close resumed>) = 0 [pid 5851] <... munmap resumed>) = 0 [pid 5636] fstat(3 [pid 5638] rmdir("./41" [pid 5854] symlink("/dev/binderfs", "./binderfs" [pid 5638] <... rmdir resumed>) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5851] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5854] <... symlink resumed>) = 0 [pid 5851] <... openat resumed>) = 4 [pid 5636] getdents64(3 [pid 5851] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5851] <... ioctl resumed>) = 0 [pid 5636] umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5851] close(3 [pid 5638] mkdir("./42", 0777 [pid 5851] <... close resumed>) = 0 [pid 5851] close(4) = 0 [pid 5851] mkdir("./bus", 0777 [pid 5854] write(1, "executing program\n", 18 [pid 5851] <... mkdir resumed>) = 0 [pid 5638] <... mkdir resumed>) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) executing program [pid 5851] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5854] <... write resumed>) = 18 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5636] newfstatat(AT_FDCWD, "./41/binderfs" [pid 5854] memfd_create("syzkaller", 0 [pid 5638] <... openat resumed>) = 3 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5854] <... memfd_create resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5636] unlink("./41/binderfs" [pid 5854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5854] <... mmap resumed>) = 0x7fb9643a6000 [pid 5638] close(3 [pid 5636] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5855 attached [ 279.793099][ T5851] loop4: detected capacity change from 0 to 32768 [pid 5855] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5855 [pid 5855] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5855] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5855] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5855] chdir("./42") = 0 [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5855] setpgid(0, 0) = 0 [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5855] write(3, "1000", 4 [pid 5851] <... mount resumed>) = 0 [pid 5855] <... write resumed>) = 4 [pid 5855] close(3) = 0 [pid 5851] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5855] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5851] <... openat resumed>) = 3 [pid 5851] chdir("./bus" [pid 5855] write(1, "executing program\n", 18 [pid 5853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... umount2 resumed>) = 0 [pid 5855] <... write resumed>) = 18 [pid 5851] <... chdir resumed>) = 0 executing program [pid 5855] memfd_create("syzkaller", 0 [pid 5851] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5855] <... memfd_create resumed>) = 3 [pid 5636] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5851] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5855] <... mmap resumed>) = 0x7fb9643a6000 [pid 5851] exit_group(0 [pid 5636] newfstatat(AT_FDCWD, "./41/bus" [pid 5851] <... exit_group resumed>) = ? [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5851] +++ exited with 0 +++ [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5851, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5636] getdents64(4 [pid 5640] umount2("./39", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] getdents64(4 [pid 5640] <... openat resumed>) = 3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./41/bus" [pid 5640] getdents64(3 [pid 5636] <... rmdir resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./39/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] getdents64(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] close(3 [pid 5640] unlink("./39/binderfs" [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./41" [pid 5640] <... unlink resumed>) = 0 [pid 5640] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... rmdir resumed>) = 0 [pid 5636] mkdir("./42", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3 [pid 5640] <... umount2 resumed>) = 0 [pid 5640] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./39/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./39/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./39/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./39/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./39") = 0 [pid 5640] mkdir("./40", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5856 attached , child_tidptr=0x55555d1b46d0) = 5856 [pid 5856] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5856] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5856] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5856] chdir("./40" [pid 5854] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5856] <... chdir resumed>) = 0 [pid 5856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5856] setpgid(0, 0) = 0 [pid 5856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5856] write(3, "1000", 4) = 4 [pid 5856] close(3) = 0 [pid 5856] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5856] write(1, "executing program\n", 18) = 18 executing program [pid 5856] memfd_create("syzkaller", 0) = 3 [pid 5856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5855] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5636] <... close resumed>) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5857 ci2-upstream-fs/strace-static-x86_64: Process 5857 attached [pid 5857] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5857] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5857] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5857] chdir("./42") = 0 [pid 5857] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5856] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5857] <... prctl resumed>) = 0 [pid 5857] setpgid(0, 0) = 0 [pid 5857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5857] write(3, "1000", 4) = 4 [pid 5857] close(3) = 0 [pid 5857] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5857] write(1, "executing program\n", 18) = 18 executing program [pid 5857] memfd_create("syzkaller", 0) = 3 [pid 5857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5854] <... write resumed>) = 16777216 [pid 5854] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5854] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5854] close(3) = 0 [pid 5854] close(4) = 0 [pid 5854] mkdir("./bus", 0777) = 0 [pid 5854] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5854] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5854] chdir("./bus" [pid 5853] <... write resumed>) = 16777216 [pid 5853] munmap(0x7fb9643a6000, 138412032 [pid 5854] <... chdir resumed>) = 0 [pid 5854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5854] exit_group(0) = ? [pid 5854] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5854, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=30 /* 0.30 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5853] <... munmap resumed>) = 0 [pid 5634] umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5853] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5634] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5853] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5853] <... ioctl resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3 [pid 5853] close(3) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5853] close(4) = 0 [pid 5634] umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5853] mkdir("./bus", 0777 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5853] <... mkdir resumed>) = 0 [pid 5853] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] unlink("./40/binderfs") = 0 [pid 5634] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5853] <... mount resumed>) = 0 [pid 5853] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5853] chdir("./bus") = 0 [pid 5853] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5857] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5853] exit_group(0 [pid 5634] <... umount2 resumed>) = 0 [pid 5853] <... exit_group resumed>) = ? [pid 5634] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5853] +++ exited with 0 +++ [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5853, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=40 /* 0.40 s */} --- [pid 5634] newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... openat resumed>) = 4 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./41/binderfs" [pid 5634] getdents64(4 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./41/binderfs") = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] close(4) = 0 [pid 5634] rmdir("./40/bus") = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./40") = 0 [pid 5634] mkdir("./41", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5858 attached [pid 5637] <... umount2 resumed>) = 0 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5858 [pid 5858] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5637] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5858] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] newfstatat(AT_FDCWD, "./41/bus" [pid 5858] chdir("./41" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5858] <... chdir resumed>) = 0 [pid 5637] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5858] setpgid(0, 0) = 0 [pid 5637] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5637] <... openat resumed>) = 4 [pid 5858] <... openat resumed>) = 3 [pid 5858] write(3, "1000", 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5858] <... write resumed>) = 4 [pid 5637] getdents64(4 [pid 5858] close(3 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5858] <... close resumed>) = 0 [pid 5858] symlink("/dev/binderfs", "./binderfs" [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5858] <... symlink resumed>) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./41/bus" [pid 5858] write(1, "executing program\n", 18 [pid 5637] <... rmdir resumed>) = 0 [pid 5858] <... write resumed>) = 18 [pid 5858] memfd_create("syzkaller", 0 executing program [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./41") = 0 [pid 5637] mkdir("./42", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5858] <... memfd_create resumed>) = 3 [pid 5858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 ci2-upstream-fs/strace-static-x86_64: Process 5859 attached [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5859 [pid 5859] set_robust_list(0x55555d1b46e0, 24 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5859] <... set_robust_list resumed>) = 0 [pid 5859] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5859] chdir("./42") = 0 [pid 5859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5859] setpgid(0, 0) = 0 [pid 5859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5859] write(3, "1000", 4) = 4 [pid 5859] close(3) = 0 [pid 5859] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5859] write(1, "executing program\n", 18) = 18 executing program [pid 5859] memfd_create("syzkaller", 0) = 3 [pid 5859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5855] <... write resumed>) = 16777216 [pid 5855] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5855] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5855] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5855] close(3) = 0 [pid 5855] close(4) = 0 [pid 5855] mkdir("./bus", 0777) = 0 [pid 5855] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5855] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5855] chdir("./bus") = 0 [pid 5855] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5855] exit_group(0) = ? [pid 5855] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5855, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=24 /* 0.24 s */} --- [pid 5638] umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./42/binderfs") = 0 [pid 5638] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5638] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./42/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./42") = 0 [pid 5638] mkdir("./43", 0777 [pid 5856] <... write resumed>) = 16777216 [pid 5638] <... mkdir resumed>) = 0 [pid 5856] munmap(0x7fb9643a6000, 138412032 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5638] close(3) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5860 attached [pid 5858] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5860] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5860 [pid 5860] <... set_robust_list resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5860] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5860] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5860] chdir("./43") = 0 [pid 5860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5860] setpgid(0, 0 [pid 5856] <... munmap resumed>) = 0 [pid 5860] <... setpgid resumed>) = 0 [pid 5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5856] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5860] write(3, "1000", 4) = 4 [pid 5860] close(3) = 0 [pid 5860] symlink("/dev/binderfs", "./binderfs" [pid 5856] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5856] close(3) = 0 [pid 5856] close(4) = 0 [pid 5860] <... symlink resumed>) = 0 [pid 5856] mkdir("./bus", 0777 [pid 5860] write(1, "executing program\n", 18 [pid 5856] <... mkdir resumed>) = 0 [pid 5860] <... write resumed>) = 18 executing program [pid 5860] memfd_create("syzkaller", 0 [pid 5856] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5860] <... memfd_create resumed>) = 3 [pid 5860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5856] <... mount resumed>) = 0 [pid 5856] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5856] chdir("./bus") = 0 [pid 5856] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5856] exit_group(0) = ? [pid 5856] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5856, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./40", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./40/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./40/binderfs") = 0 [pid 5640] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5640] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./40/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./40/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./40/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5640] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4) = 0 [pid 5640] rmdir("./40/bus") = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3) = 0 [pid 5640] rmdir("./40") = 0 [pid 5640] mkdir("./41", 0777) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5861 attached , child_tidptr=0x55555d1b46d0) = 5861 [pid 5861] set_robust_list(0x55555d1b46e0, 24 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5861] <... set_robust_list resumed>) = 0 [pid 5861] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5861] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5861] chdir("./41") = 0 [pid 5861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5861] setpgid(0, 0) = 0 [pid 5861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5861] write(3, "1000", 4) = 4 [pid 5861] close(3) = 0 [pid 5861] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5861] write(1, "executing program\n", 18) = 18 executing program [pid 5861] memfd_create("syzkaller", 0) = 3 [pid 5861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5857] <... write resumed>) = 16777216 [pid 5857] munmap(0x7fb9643a6000, 138412032 [pid 5860] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5857] <... munmap resumed>) = 0 [pid 5857] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5857] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5857] close(3) = 0 [pid 5857] close(4) = 0 [pid 5857] mkdir("./bus", 0777) = 0 [ 282.302917][ T5857] set_capacity_and_notify: 4 callbacks suppressed [ 282.302940][ T5857] loop1: detected capacity change from 0 to 32768 [pid 5857] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5857] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5857] chdir("./bus") = 0 [pid 5857] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5861] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5857] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5857] exit_group(0) = ? [pid 5857] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5857, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=37 /* 0.37 s */} --- [pid 5636] umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./42/binderfs") = 0 [pid 5636] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./42/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./42") = 0 [pid 5636] mkdir("./43", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d1b46d0) = 5862 ci2-upstream-fs/strace-static-x86_64: Process 5862 attached [pid 5862] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5862] <... set_robust_list resumed>) = 0 [pid 5862] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5862] chdir("./43") = 0 [pid 5862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5862] setpgid(0, 0) = 0 [pid 5862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5862] write(3, "1000", 4) = 4 [pid 5862] close(3) = 0 [pid 5862] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5862] write(1, "executing program\n", 18) = 18 executing program [pid 5862] memfd_create("syzkaller", 0) = 3 [pid 5862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5858] <... write resumed>) = 16777216 [pid 5862] <... mmap resumed>) = 0x7fb9643a6000 [pid 5858] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5858] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5858] close(3) = 0 [pid 5858] close(4) = 0 [pid 5858] mkdir("./bus", 0777) = 0 [ 282.785922][ T5858] loop0: detected capacity change from 0 to 32768 [pid 5858] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5858] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5858] chdir("./bus") = 0 [pid 5858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5858] exit_group(0) = ? [pid 5858] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5858, si_uid=0, si_status=0, si_utime=0, si_stime=32 /* 0.32 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./41/binderfs") = 0 [pid 5634] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5859] <... write resumed>) = 16777216 [pid 5859] munmap(0x7fb9643a6000, 138412032 [pid 5634] <... umount2 resumed>) = 0 [pid 5859] <... munmap resumed>) = 0 [pid 5859] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5634] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5859] <... openat resumed>) = 4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./41/bus" [pid 5859] ioctl(4, LOOP_SET_FD, 3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5859] <... ioctl resumed>) = 0 [pid 5634] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5859] close(3 [pid 5634] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5859] <... close resumed>) = 0 [pid 5859] close(4 [pid 5862] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5859] <... close resumed>) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5859] mkdir("./bus", 0777) = 0 [pid 5634] fstat(4 [pid 5859] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./41/bus") = 0 [ 283.087067][ T5859] loop2: detected capacity change from 0 to 32768 [pid 5634] getdents64(3 [pid 5859] <... mount resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5859] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5634] rmdir("./41" [pid 5859] <... openat resumed>) = 3 [pid 5859] chdir("./bus") = 0 [pid 5859] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5634] <... rmdir resumed>) = 0 [pid 5859] exit_group(0 [pid 5634] mkdir("./42", 0777 [pid 5859] <... exit_group resumed>) = ? [pid 5634] <... mkdir resumed>) = 0 [pid 5859] +++ exited with 0 +++ [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5859, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=27 /* 0.27 s */} --- [pid 5634] <... openat resumed>) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5637] umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... ioctl resumed>) = 0 [pid 5634] close(3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./42/binderfs") = 0 [pid 5637] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./42/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./42/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./42") = 0 [pid 5637] mkdir("./43", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5863 attached , child_tidptr=0x55555d1b46d0) = 5863 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5863] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5863] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5863] chdir("./43") = 0 [pid 5860] <... write resumed>) = 16777216 [pid 5863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5860] munmap(0x7fb9643a6000, 138412032 [pid 5863] <... prctl resumed>) = 0 [pid 5863] setpgid(0, 0) = 0 [pid 5863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5863] write(3, "1000", 4) = 4 [pid 5863] close(3) = 0 [pid 5863] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5863] write(1, "executing program\n", 18) = 18 executing program [pid 5863] memfd_create("syzkaller", 0) = 3 [pid 5863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5860] <... munmap resumed>) = 0 [pid 5863] <... mmap resumed>) = 0x7fb9643a6000 [pid 5860] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5860] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5860] close(3) = 0 [pid 5860] close(4) = 0 [pid 5860] mkdir("./bus", 0777) = 0 [pid 5861] <... write resumed>) = 16777216 [pid 5860] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [ 283.485911][ T5860] loop3: detected capacity change from 0 to 32768 [pid 5861] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5860] <... mount resumed>) = 0 [pid 5861] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5860] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5861] <... openat resumed>) = 4 [pid 5860] <... openat resumed>) = 3 [pid 5861] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5860] chdir("./bus") = 0 [pid 5861] close(3 [pid 5860] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5861] <... close resumed>) = 0 [pid 5860] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5861] close(4 [pid 5860] exit_group(0 [pid 5861] <... close resumed>) = 0 [pid 5860] <... exit_group resumed>) = ? [pid 5861] mkdir("./bus", 0777) = 0 [pid 5860] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5860, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=22 /* 0.22 s */} --- [pid 5861] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5638] umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 283.558564][ T5861] loop4: detected capacity change from 0 to 32768 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./43/binderfs") = 0 [pid 5638] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5861] <... mount resumed>) = 0 [pid 5861] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5861] chdir("./bus") = 0 [pid 5861] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5861] exit_group(0) = ? [pid 5861] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5861, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=33 /* 0.33 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] umount2("./41", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./41/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./41/binderfs") = 0 [pid 5640] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./43/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./43") = 0 [pid 5634] <... close resumed>) = 0 [pid 5863] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5638] mkdir("./44", 0777) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWRci2-upstream-fs/strace-static-x86_64: Process 5864 attached ) = 3 [pid 5864] set_robust_list(0x55555d1b46e0, 24 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5864 [pid 5864] <... set_robust_list resumed>) = 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5864] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] close(3 [pid 5864] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5864] chdir("./42" [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5864] <... chdir resumed>) = 0 [pid 5640] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5864] setpgid(0, 0) = 0 [pid 5864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] newfstatat(AT_FDCWD, "./41/bus" [pid 5864] <... openat resumed>) = 3 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5865 attached [pid 5640] umount2("./41/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5864] write(3, "1000", 4) = 4 [pid 5640] openat(AT_FDCWD, "./41/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5864] close(3 [pid 5640] <... openat resumed>) = 4 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5865 [pid 5865] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5865] <... set_robust_list resumed>) = 0 [pid 5864] <... close resumed>) = 0 [pid 5640] fstat(4 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5865] rt_sigprocmask(SIG_SETMASK, [] [pid 5864] symlink("/dev/binderfs", "./binderfs" [pid 5865] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5864] <... symlink resumed>) = 0 [pid 5640] getdents64(4 [pid 5865] chdir("./44" [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 executing program [pid 5864] write(1, "executing program\n", 18 [pid 5640] getdents64(4 [pid 5865] <... chdir resumed>) = 0 [pid 5864] <... write resumed>) = 18 [pid 5865] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5864] memfd_create("syzkaller", 0 [pid 5865] <... prctl resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5865] setpgid(0, 0 [pid 5640] close(4 [pid 5865] <... setpgid resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] rmdir("./41/bus" [pid 5864] <... memfd_create resumed>) = 3 [pid 5864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... rmdir resumed>) = 0 [pid 5865] <... openat resumed>) = 3 [pid 5865] write(3, "1000", 4) = 4 [pid 5640] getdents64(3 [pid 5865] close(3 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5865] <... close resumed>) = 0 [pid 5640] close(3 [pid 5865] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... close resumed>) = 0 [pid 5865] <... symlink resumed>) = 0 [pid 5640] rmdir("./41") = 0 [pid 5865] write(1, "executing program\n", 18 [pid 5640] mkdir("./42", 0777 [pid 5862] <... write resumed>) = 16777216 executing program [pid 5865] <... write resumed>) = 18 [pid 5862] munmap(0x7fb9643a6000, 138412032 [pid 5865] memfd_create("syzkaller", 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5865] <... memfd_create resumed>) = 3 [pid 5865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... openat resumed>) = 3 [pid 5865] <... mmap resumed>) = 0x7fb9643a6000 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5862] <... munmap resumed>) = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5866 [pid 5862] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5640] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5866 attached , NULL, 8) = 0 [pid 5866] set_robust_list(0x55555d1b46e0, 24 [pid 5862] ioctl(4, LOOP_SET_FD, 3 [pid 5866] <... set_robust_list resumed>) = 0 [pid 5866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5862] <... ioctl resumed>) = 0 [pid 5866] chdir("./42") = 0 [pid 5862] close(3 [pid 5866] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5862] <... close resumed>) = 0 [pid 5866] <... prctl resumed>) = 0 [pid 5866] setpgid(0, 0 [pid 5862] close(4) = 0 [pid 5866] <... setpgid resumed>) = 0 [pid 5862] mkdir("./bus", 0777 [pid 5866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5862] <... mkdir resumed>) = 0 [pid 5866] write(3, "1000", 4 [pid 5862] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5866] <... write resumed>) = 4 [pid 5866] close(3) = 0 [ 283.950770][ T5862] loop1: detected capacity change from 0 to 32768 [pid 5866] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5866] write(1, "executing program\n", 18) = 18 executing program [pid 5866] memfd_create("syzkaller", 0) = 3 [pid 5866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5862] <... mount resumed>) = 0 [pid 5862] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5862] chdir("./bus") = 0 [pid 5862] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5862] exit_group(0) = ? [pid 5862] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5862, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=25 /* 0.25 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./43/binderfs") = 0 [pid 5636] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./43/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./43") = 0 [pid 5636] mkdir("./44", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5867 attached [pid 5867] set_robust_list(0x55555d1b46e0, 24 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5867 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5867] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5867] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5867] chdir("./44") = 0 [pid 5867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5867] setpgid(0, 0) = 0 [pid 5867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5867] write(3, "1000", 4) = 4 [pid 5867] close(3) = 0 [pid 5867] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5867] write(1, "executing program\n", 18) = 18 executing program [pid 5867] memfd_create("syzkaller", 0) = 3 [pid 5867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5864] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5865] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5866] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5863] <... write resumed>) = 16777216 [pid 5863] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5863] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5863] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5863] close(3) = 0 [pid 5863] close(4) = 0 [pid 5863] mkdir("./bus", 0777) = 0 [pid 5863] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 284.857738][ T5863] loop2: detected capacity change from 0 to 32768 [pid 5863] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5863] chdir("./bus") = 0 [pid 5863] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5863] exit_group(0) = ? [pid 5863] +++ exited with 0 +++ [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5863, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=41 /* 0.41 s */} --- [pid 5637] umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./43/binderfs") = 0 [pid 5637] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5637] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./43/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5637] rmdir("./43/bus") = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./43") = 0 [pid 5637] mkdir("./44", 0777) = 0 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3 [pid 5865] <... write resumed>) = 16777216 [pid 5865] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5865] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5864] <... write resumed>) = 16777216 [pid 5865] <... openat resumed>) = 4 [pid 5864] munmap(0x7fb9643a6000, 138412032 [pid 5865] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5865] close(3) = 0 [pid 5865] close(4) = 0 [pid 5865] mkdir("./bus", 0777) = 0 [pid 5865] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5864] <... munmap resumed>) = 0 [pid 5864] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5864] ioctl(4, LOOP_SET_FD, 3) = 0 [ 285.320407][ T5865] loop3: detected capacity change from 0 to 32768 [pid 5866] <... write resumed>) = 16777216 [pid 5864] close(3) = 0 [pid 5866] munmap(0x7fb9643a6000, 138412032 [pid 5864] close(4) = 0 [pid 5865] <... mount resumed>) = 0 [pid 5864] mkdir("./bus", 0777 [pid 5866] <... munmap resumed>) = 0 [pid 5866] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5865] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5864] <... mkdir resumed>) = 0 [pid 5866] <... openat resumed>) = 4 [pid 5865] <... openat resumed>) = 3 [pid 5866] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5865] chdir("./bus") = 0 [pid 5865] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5864] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5865] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5866] close(3) = 0 [pid 5866] close(4) = 0 [pid 5865] exit_group(0 [pid 5866] mkdir("./bus", 0777) = 0 [pid 5865] <... exit_group resumed>) = ? [pid 5866] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5865] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5865, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=22 /* 0.22 s */} --- [pid 5638] umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 285.366313][ T5864] loop0: detected capacity change from 0 to 32768 [ 285.402274][ T5866] loop4: detected capacity change from 0 to 32768 [pid 5638] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5866] <... mount resumed>) = 0 [pid 5864] <... mount resumed>) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5864] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] fstat(3 [pid 5866] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5864] <... openat resumed>) = 3 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5866] <... openat resumed>) = 3 [pid 5638] getdents64(3 [pid 5866] chdir("./bus" [pid 5864] chdir("./bus" [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5866] <... chdir resumed>) = 0 [pid 5864] <... chdir resumed>) = 0 [pid 5866] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5866] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5864] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5866] exit_group(0 [pid 5864] exit_group(0 [pid 5638] newfstatat(AT_FDCWD, "./44/binderfs" [pid 5864] <... exit_group resumed>) = ? [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5866] <... exit_group resumed>) = ? [pid 5638] unlink("./44/binderfs") = 0 [pid 5638] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5866] +++ exited with 0 +++ [pid 5864] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5864, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=32 /* 0.32 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5866, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=28 /* 0.28 s */} --- [pid 5640] umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... restart_syscall resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3 [pid 5634] umount2("./42", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] getdents64(3 [pid 5634] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... openat resumed>) = 3 [pid 5634] fstat(3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] newfstatat(AT_FDCWD, "./42/binderfs" [pid 5634] getdents64(3 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./42/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] unlink("./42/binderfs" [pid 5634] newfstatat(AT_FDCWD, "./42/binderfs" [pid 5640] <... unlink resumed>) = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] unlink("./42/binderfs") = 0 [pid 5634] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] <... umount2 resumed>) = 0 [pid 5638] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(4 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... umount2 resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] newfstatat(AT_FDCWD, "./42/bus" [pid 5638] close(4 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... close resumed>) = 0 [pid 5640] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rmdir("./44/bus") = 0 [pid 5634] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] getdents64(3 [pid 5634] newfstatat(AT_FDCWD, "./42/bus" [pid 5640] <... openat resumed>) = 4 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] fstat(4 [pid 5638] close(3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... close resumed>) = 0 [pid 5634] umount2("./42/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] rmdir("./44" [pid 5640] getdents64(4 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] openat(AT_FDCWD, "./42/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] getdents64(4 [pid 5638] <... rmdir resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... openat resumed>) = 4 [pid 5640] close(4) = 0 [pid 5634] fstat(4 [pid 5638] mkdir("./45", 0777 [pid 5640] rmdir("./42/bus" [pid 5638] <... mkdir resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5634] close(4 [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] close(3 [pid 5638] <... openat resumed>) = 3 [pid 5634] rmdir("./42/bus" [pid 5640] <... close resumed>) = 0 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5640] rmdir("./42" [pid 5638] <... ioctl resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5638] close(3 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] getdents64(3 [pid 5638] <... close resumed>) = 0 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] close(3 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] <... close resumed>) = 0 [pid 5640] mkdir("./43", 0777 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] rmdir("./42" [pid 5640] <... mkdir resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5634] mkdir("./43", 0777ci2-upstream-fs/strace-static-x86_64: Process 5868 attached [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5868 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] <... mkdir resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5868] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... ioctl resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] close(3 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... close resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] <... openat resumed>) = 3 [pid 5868] <... set_robust_list resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] ioctl(3, LOOP_CLR_FD [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... ioctl resumed>) = 0 [pid 5868] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] close(3ci2-upstream-fs/strace-static-x86_64: Process 5869 attached [pid 5868] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... close resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5870 attached [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5870 [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5868] chdir("./45" [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5869 [pid 5870] set_robust_list(0x55555d1b46e0, 24 [pid 5869] set_robust_list(0x55555d1b46e0, 24 [pid 5868] <... chdir resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5870] <... set_robust_list resumed>) = 0 [pid 5869] <... set_robust_list resumed>) = 0 [pid 5868] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5870] rt_sigprocmask(SIG_SETMASK, [] [pid 5869] rt_sigprocmask(SIG_SETMASK, [] [pid 5868] <... prctl resumed>) = 0 [pid 5868] setpgid(0, 0ci2-upstream-fs/strace-static-x86_64: Process 5871 attached [pid 5870] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5869] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5868] <... setpgid resumed>) = 0 [pid 5870] chdir("./43" [pid 5871] set_robust_list(0x55555d1b46e0, 24 [pid 5870] <... chdir resumed>) = 0 [pid 5869] chdir("./44" [pid 5868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5871] <... set_robust_list resumed>) = 0 [pid 5870] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5869] <... chdir resumed>) = 0 [pid 5868] <... openat resumed>) = 3 [pid 5870] <... prctl resumed>) = 0 [pid 5871] rt_sigprocmask(SIG_SETMASK, [] [pid 5870] setpgid(0, 0 [pid 5869] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5871 [pid 5871] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5868] write(3, "1000", 4 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5870] <... setpgid resumed>) = 0 [pid 5869] <... prctl resumed>) = 0 [pid 5871] chdir("./43" [pid 5870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5868] <... write resumed>) = 4 [pid 5871] <... chdir resumed>) = 0 [pid 5870] <... openat resumed>) = 3 [pid 5869] setpgid(0, 0 [pid 5868] close(3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5869] <... setpgid resumed>) = 0 [pid 5871] <... prctl resumed>) = 0 [pid 5869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5868] <... close resumed>) = 0 [pid 5870] write(3, "1000", 4 [pid 5869] <... openat resumed>) = 3 [pid 5870] <... write resumed>) = 4 [pid 5869] write(3, "1000", 4 [pid 5871] setpgid(0, 0 [pid 5868] symlink("/dev/binderfs", "./binderfs" [pid 5871] <... setpgid resumed>) = 0 [pid 5870] close(3 [pid 5869] <... write resumed>) = 4 [pid 5870] <... close resumed>) = 0 [pid 5870] symlink("/dev/binderfs", "./binderfs" [pid 5869] close(3 [pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5868] <... symlink resumed>) = 0 [pid 5870] <... symlink resumed>) = 0 [pid 5869] <... close resumed>) = 0 [pid 5871] <... openat resumed>) = 3 executing program [pid 5868] write(1, "executing program\n", 18 [pid 5870] write(1, "executing program\n", 18 [pid 5869] symlink("/dev/binderfs", "./binderfs" [pid 5868] <... write resumed>) = 18 executing program [pid 5871] write(3, "1000", 4) = 4 [pid 5870] <... write resumed>) = 18 [pid 5869] <... symlink resumed>) = 0 [pid 5868] memfd_create("syzkaller", 0 [pid 5871] close(3 [pid 5870] memfd_create("syzkaller", 0 [pid 5871] <... close resumed>) = 0 [pid 5871] symlink("/dev/binderfs", "./binderfs" [pid 5870] <... memfd_create resumed>) = 3 [pid 5869] write(1, "executing program\n", 18 [pid 5868] <... memfd_create resumed>) = 3 [pid 5871] <... symlink resumed>) = 0 [pid 5869] <... write resumed>) = 18 executing program [pid 5870] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5869] memfd_create("syzkaller", 0 [pid 5871] write(1, "executing program\n", 18 [pid 5870] <... mmap resumed>) = 0x7fb9643a6000 [pid 5868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5867] <... write resumed>) = 16777216 [pid 5871] <... write resumed>) = 18 [pid 5869] <... memfd_create resumed>) = 3 [pid 5868] <... mmap resumed>) = 0x7fb9643a6000 executing program [pid 5867] munmap(0x7fb9643a6000, 138412032 [pid 5871] memfd_create("syzkaller", 0 [pid 5869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5871] <... memfd_create resumed>) = 3 [pid 5871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5867] <... munmap resumed>) = 0 [pid 5867] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5867] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5867] close(3) = 0 [pid 5867] close(4) = 0 [pid 5867] mkdir("./bus", 0777) = 0 [pid 5867] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5867] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5867] chdir("./bus") = 0 [pid 5867] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5867] exit_group(0) = ? [pid 5867] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5867, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5636] umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./44/binderfs") = 0 [pid 5636] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./44/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./44") = 0 [pid 5636] mkdir("./45", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5872 attached , child_tidptr=0x55555d1b46d0) = 5872 [pid 5872] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5872] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5872] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5872] chdir("./45") = 0 [pid 5872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5872] setpgid(0, 0) = 0 [pid 5872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5872] write(3, "1000", 4) = 4 [pid 5872] close(3) = 0 [pid 5872] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5872] write(1, "executing program\n", 18) = 18 executing program [pid 5872] memfd_create("syzkaller", 0) = 3 [pid 5872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5868] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5870] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5869] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5871] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5872] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5869] <... write resumed>) = 16777216 [pid 5869] munmap(0x7fb9643a6000, 138412032 [pid 5868] <... write resumed>) = 16777216 [pid 5868] munmap(0x7fb9643a6000, 138412032 [pid 5869] <... munmap resumed>) = 0 [pid 5869] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 5869] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5869] close(3) = 0 [pid 5869] close(4) = 0 [pid 5869] mkdir("./bus", 0777 [pid 5868] <... munmap resumed>) = 0 [pid 5868] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5871] <... write resumed>) = 16777216 [pid 5869] <... mkdir resumed>) = 0 [pid 5868] <... openat resumed>) = 4 [pid 5870] <... write resumed>) = 16777216 [pid 5868] ioctl(4, LOOP_SET_FD, 3 [pid 5870] munmap(0x7fb9643a6000, 138412032 [pid 5869] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5871] munmap(0x7fb9643a6000, 138412032 [pid 5870] <... munmap resumed>) = 0 [pid 5868] <... ioctl resumed>) = 0 [pid 5870] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5868] close(3 [pid 5870] <... openat resumed>) = 4 [pid 5868] <... close resumed>) = 0 [pid 5868] close(4) = 0 [pid 5870] ioctl(4, LOOP_SET_FD, 3 [pid 5868] mkdir("./bus", 0777 [pid 5870] <... ioctl resumed>) = 0 [pid 5868] <... mkdir resumed>) = 0 [pid 5870] close(3) = 0 [pid 5868] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5871] <... munmap resumed>) = 0 [pid 5870] close(4 [pid 5869] <... mount resumed>) = 0 [pid 5871] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5870] <... close resumed>) = 0 [pid 5869] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5871] <... openat resumed>) = 4 [pid 5870] mkdir("./bus", 0777 [pid 5869] <... openat resumed>) = 3 [pid 5868] <... mount resumed>) = 0 [pid 5871] ioctl(4, LOOP_SET_FD, 3 [pid 5870] <... mkdir resumed>) = 0 [pid 5869] chdir("./bus" [pid 5868] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5870] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5869] <... chdir resumed>) = 0 [pid 5869] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5871] <... ioctl resumed>) = 0 [pid 5869] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5868] <... openat resumed>) = 3 [pid 5871] close(3 [pid 5868] chdir("./bus" [pid 5871] <... close resumed>) = 0 [pid 5871] close(4 [pid 5869] exit_group(0 [pid 5871] <... close resumed>) = 0 [pid 5869] <... exit_group resumed>) = ? [pid 5868] <... chdir resumed>) = 0 [pid 5871] mkdir("./bus", 0777 [pid 5868] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5869] +++ exited with 0 +++ [pid 5868] exit_group(0) = ? [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5869, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=28 /* 0.28 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5870] <... mount resumed>) = 0 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5870] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5870] chdir("./bus" [pid 5637] umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5870] <... chdir resumed>) = 0 [pid 5868] +++ exited with 0 +++ [pid 5870] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5868, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=35 /* 0.35 s */} --- [pid 5870] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] <... openat resumed>) = 3 [pid 5870] exit_group(0) = ? [pid 5637] fstat(3 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5870] +++ exited with 0 +++ [pid 5638] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5871] <... mkdir resumed>) = 0 [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5870, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=37 /* 0.37 s */} --- [pid 5638] <... openat resumed>) = 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5871] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] fstat(3 [pid 5637] newfstatat(AT_FDCWD, "./44/binderfs" [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] getdents64(3 [pid 5640] umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] unlink("./44/binderfs" [pid 5638] umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... unlink resumed>) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5640] fstat(3 [pid 5638] newfstatat(AT_FDCWD, "./45/binderfs" [pid 5637] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] getdents64(3 [pid 5638] unlink("./45/binderfs" [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] <... unlink resumed>) = 0 [pid 5640] umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] unlink("./43/binderfs") = 0 [pid 5871] <... mount resumed>) = 0 [pid 5871] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5640] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5871] chdir("./bus") = 0 [pid 5871] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5871] exit_group(0) = ? [pid 5872] <... write resumed>) = 16777216 [pid 5871] +++ exited with 0 +++ [pid 5872] munmap(0x7fb9643a6000, 138412032 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5871, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=29 /* 0.29 s */} --- [pid 5634] umount2("./43", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./43/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./43/binderfs" [pid 5638] <... umount2 resumed>) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5637] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5872] <... munmap resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5872] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5638] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5872] <... openat resumed>) = 4 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] newfstatat(AT_FDCWD, "./45/bus" [pid 5872] ioctl(4, LOOP_SET_FD, 3 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5872] <... ioctl resumed>) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5872] close(3 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] fstat(4 [pid 5872] <... close resumed>) = 0 [pid 5872] close(4 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5872] <... close resumed>) = 0 [pid 5638] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5872] mkdir("./bus", 0777 [pid 5637] getdents64(4 [pid 5640] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5872] <... mkdir resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... openat resumed>) = 4 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] newfstatat(AT_FDCWD, "./43/bus" [pid 5637] getdents64(4 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... close resumed>) = 0 [pid 5640] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] rmdir("./44/bus") = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] getdents64(4 [pid 5640] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5640] <... openat resumed>) = 4 [pid 5872] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] fstat(4 [pid 5638] close(4 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... close resumed>) = 0 [pid 5638] rmdir("./45/bus" [pid 5637] getdents64(3 [pid 5638] <... rmdir resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] getdents64(4 [pid 5637] close(3) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] rmdir("./44" [pid 5640] getdents64(4 [pid 5637] <... rmdir resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5640] close(4 [pid 5638] getdents64(3 [pid 5640] <... close resumed>) = 0 [pid 5637] mkdir("./45", 0777) = 0 [pid 5640] rmdir("./43/bus") = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3 [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] <... close resumed>) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5638] rmdir("./45" [pid 5640] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] <... rmdir resumed>) = 0 [pid 5634] <... umount2 resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [ 287.429508][ T5872] set_capacity_and_notify: 5 callbacks suppressed [ 287.429531][ T5872] loop1: detected capacity change from 0 to 32768 [pid 5640] close(3 [pid 5634] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... close resumed>) = 0 [pid 5638] mkdir("./46", 0777 [pid 5637] <... ioctl resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./43/bus" [pid 5640] rmdir("./43" [pid 5638] <... mkdir resumed>) = 0 [pid 5637] close(3 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./43/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./43/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5637] <... close resumed>) = 0 [pid 5872] <... mount resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5872] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] getdents64(4 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] <... openat resumed>) = 3 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4) = 0 [pid 5634] rmdir("./43/bus" [pid 5872] <... openat resumed>) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5634] <... rmdir resumed>) = 0 [pid 5638] <... ioctl resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3 [pid 5638] close(3 [pid 5634] <... close resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5873 attached [pid 5638] <... close resumed>) = 0 [pid 5634] rmdir("./43" [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5873 [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] <... rmdir resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5872] chdir("./bus" [pid 5634] mkdir("./44", 0777) = 0 [pid 5872] <... chdir resumed>) = 0 [pid 5873] set_robust_list(0x55555d1b46e0, 24 [pid 5872] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5873] <... set_robust_list resumed>) = 0 [pid 5872] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5873] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3 [pid 5873] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5872] exit_group(0 [pid 5873] chdir("./45" [pid 5872] <... exit_group resumed>) = ? ci2-upstream-fs/strace-static-x86_64: Process 5874 attached [pid 5874] set_robust_list(0x55555d1b46e0, 24 [pid 5873] <... chdir resumed>) = 0 [pid 5874] <... set_robust_list resumed>) = 0 [pid 5874] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5873] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5874 [pid 5873] <... prctl resumed>) = 0 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5873] setpgid(0, 0) = 0 [pid 5874] chdir("./46" [pid 5873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5874] <... chdir resumed>) = 0 [pid 5872] +++ exited with 0 +++ [pid 5640] <... rmdir resumed>) = 0 [pid 5874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5872, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=20 /* 0.20 s */} --- [pid 5874] setpgid(0, 0) = 0 [pid 5874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5873] <... openat resumed>) = 3 [pid 5640] mkdir("./44", 0777 [pid 5874] <... openat resumed>) = 3 [pid 5640] <... mkdir resumed>) = 0 [pid 5636] umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5874] write(3, "1000", 4 [pid 5873] write(3, "1000", 4 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5873] <... write resumed>) = 4 [pid 5874] <... write resumed>) = 4 [pid 5873] close(3 [pid 5874] close(3 [pid 5640] <... openat resumed>) = 3 [pid 5636] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5874] <... close resumed>) = 0 [pid 5873] <... close resumed>) = 0 [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5874] symlink("/dev/binderfs", "./binderfs" [pid 5873] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... ioctl resumed>) = 0 [pid 5636] <... openat resumed>) = 3 [pid 5640] close(3 [pid 5874] <... symlink resumed>) = 0 [pid 5873] <... symlink resumed>) = 0 [pid 5640] <... close resumed>) = 0 [pid 5636] fstat(3 [pid 5874] write(1, "executing program\n", 18 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5874] <... write resumed>) = 18 [pid 5873] write(1, "executing program\n", 18 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] getdents64(3 [pid 5873] <... write resumed>) = 18 [pid 5874] memfd_create("syzkaller", 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5874] <... memfd_create resumed>) = 3 executing program executing program [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5873] memfd_create("syzkaller", 0 [pid 5874] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5874] <... mmap resumed>) = 0x7fb9643a6000 [pid 5873] <... memfd_create resumed>) = 3 [pid 5636] newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] unlink("./45/binderfs" [pid 5873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0ci2-upstream-fs/strace-static-x86_64: Process 5875 attached ) = 0x7fb9643a6000 [pid 5875] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5875 [pid 5875] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5875] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5875] chdir("./44" [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5875] <... chdir resumed>) = 0 [pid 5875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5875] setpgid(0, 0) = 0 [pid 5875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5875] write(3, "1000", 4) = 4 [pid 5875] close(3) = 0 [pid 5875] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5875] write(1, "executing program\n", 18) = 18 executing program [pid 5875] memfd_create("syzkaller", 0) = 3 [pid 5875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5636] <... unlink resumed>) = 0 [pid 5636] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5636] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5636] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] close(4) = 0 [pid 5636] rmdir("./45/bus") = 0 [pid 5636] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] close(3) = 0 [pid 5636] rmdir("./45") = 0 [pid 5636] mkdir("./46", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5876 attached , child_tidptr=0x55555d1b46d0) = 5876 [pid 5876] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5876] <... set_robust_list resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5876] chdir("./46") = 0 [pid 5876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5876] setpgid(0, 0) = 0 [pid 5876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5876] write(3, "1000", 4) = 4 [pid 5876] close(3) = 0 [pid 5876] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5876] write(1, "executing program\n", 18) = 18 executing program [pid 5876] memfd_create("syzkaller", 0) = 3 [pid 5876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5874] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5875] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5873] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] <... close resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5877 attached [pid 5877] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5877 [pid 5877] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5877] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5877] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5877] chdir("./44") = 0 [pid 5877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5877] setpgid(0, 0) = 0 [pid 5877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5877] write(3, "1000", 4) = 4 [pid 5877] close(3) = 0 [pid 5877] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5877] write(1, "executing program\n", 18) = 18 [pid 5877] memfd_create("syzkaller", 0) = 3 [pid 5877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5876] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5877] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5875] <... write resumed>) = 16777216 [pid 5875] munmap(0x7fb9643a6000, 138412032 [pid 5873] <... write resumed>) = 16777216 [pid 5873] munmap(0x7fb9643a6000, 138412032 [pid 5875] <... munmap resumed>) = 0 [pid 5875] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 5875] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5874] <... write resumed>) = 16777216 [pid 5873] <... munmap resumed>) = 0 [pid 5874] munmap(0x7fb9643a6000, 138412032 [pid 5873] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5875] close(3 [pid 5873] <... openat resumed>) = 4 [pid 5875] <... close resumed>) = 0 [pid 5873] ioctl(4, LOOP_SET_FD, 3 [pid 5875] close(4) = 0 [pid 5873] <... ioctl resumed>) = 0 [pid 5875] mkdir("./bus", 0777) = 0 [pid 5873] close(3) = 0 [pid 5875] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5873] close(4) = 0 [pid 5873] mkdir("./bus", 0777 [pid 5874] <... munmap resumed>) = 0 [pid 5873] <... mkdir resumed>) = 0 [pid 5874] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5873] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5874] <... openat resumed>) = 4 [pid 5874] ioctl(4, LOOP_SET_FD, 3) = 0 [ 288.999307][ T5875] loop4: detected capacity change from 0 to 32768 [ 289.019219][ T5873] loop2: detected capacity change from 0 to 32768 [pid 5875] <... mount resumed>) = 0 [pid 5874] close(3 [pid 5875] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5874] <... close resumed>) = 0 [pid 5874] close(4 [pid 5875] <... openat resumed>) = 3 [pid 5875] chdir("./bus" [pid 5874] <... close resumed>) = 0 [pid 5873] <... mount resumed>) = 0 [pid 5875] <... chdir resumed>) = 0 [pid 5874] mkdir("./bus", 0777) = 0 [pid 5873] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5875] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5873] <... openat resumed>) = 3 [pid 5873] chdir("./bus" [pid 5875] exit_group(0 [pid 5873] <... chdir resumed>) = 0 [pid 5875] <... exit_group resumed>) = ? [pid 5873] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5874] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5873] exit_group(0) = ? [pid 5875] +++ exited with 0 +++ [pid 5873] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5875, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=32 /* 0.32 s */} --- [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5873, si_uid=0, si_status=0, si_utime=6 /* 0.06 s */, si_stime=22 /* 0.22 s */} --- [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [ 289.080470][ T5874] loop3: detected capacity change from 0 to 32768 [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5640] <... restart_syscall resumed>) = 0 [pid 5637] umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5876] <... write resumed>) = 16777216 [pid 5874] <... mount resumed>) = 0 [pid 5640] umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5876] munmap(0x7fb9643a6000, 138412032 [pid 5874] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5874] <... openat resumed>) = 3 [pid 5640] <... openat resumed>) = 3 [pid 5637] <... openat resumed>) = 3 [pid 5637] fstat(3 [pid 5640] fstat(3 [pid 5874] chdir("./bus" [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5874] <... chdir resumed>) = 0 [pid 5640] getdents64(3 [pid 5637] getdents64(3 [pid 5874] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5874] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5874] exit_group(0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5874] <... exit_group resumed>) = ? [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5640] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5876] <... munmap resumed>) = 0 [pid 5640] unlink("./44/binderfs" [pid 5637] unlink("./45/binderfs" [pid 5876] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5640] <... unlink resumed>) = 0 [pid 5637] <... unlink resumed>) = 0 [pid 5876] <... openat resumed>) = 4 [pid 5874] +++ exited with 0 +++ [pid 5637] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5876] ioctl(4, LOOP_SET_FD, 3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5874, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=28 /* 0.28 s */} --- [pid 5876] <... ioctl resumed>) = 0 [pid 5876] close(3) = 0 [pid 5876] close(4) = 0 [pid 5876] mkdir("./bus", 0777) = 0 [pid 5876] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./46/binderfs") = 0 [pid 5638] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [ 289.211469][ T5876] loop1: detected capacity change from 0 to 32768 [pid 5876] <... mount resumed>) = 0 [pid 5637] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5876] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5876] <... openat resumed>) = 3 [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] getdents64(4 [pid 5876] chdir("./bus" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4 [pid 5876] <... chdir resumed>) = 0 [pid 5876] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5637] <... close resumed>) = 0 [pid 5637] rmdir("./45/bus" [pid 5876] exit_group(0 [pid 5637] <... rmdir resumed>) = 0 [pid 5876] <... exit_group resumed>) = ? [pid 5640] <... umount2 resumed>) = 0 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./45") = 0 [pid 5637] mkdir("./46", 0777 [pid 5640] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5876] +++ exited with 0 +++ [pid 5640] newfstatat(AT_FDCWD, "./44/bus" [pid 5637] <... mkdir resumed>) = 0 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5876, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5640] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5640] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] <... openat resumed>) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] <... openat resumed>) = 4 [pid 5638] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] close(3 [pid 5640] fstat(4 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... restart_syscall resumed>) = 0 [pid 5638] newfstatat(AT_FDCWD, "./46/bus" [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... close resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] getdents64(4 [pid 5638] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] getdents64(4 [pid 5638] <... openat resumed>) = 4 [pid 5636] <... openat resumed>) = 3 ci2-upstream-fs/strace-static-x86_64: Process 5878 attached [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] fstat(4 [pid 5636] fstat(3 [pid 5640] close(4 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5878] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... close resumed>) = 0 [pid 5638] getdents64(4 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5878 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5878] <... set_robust_list resumed>) = 0 [pid 5640] rmdir("./44/bus" [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] getdents64(3 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5878] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] getdents64(4 [pid 5878] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5636] umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5878] chdir("./46" [pid 5638] close(4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... rmdir resumed>) = 0 [pid 5878] <... chdir resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5636] newfstatat(AT_FDCWD, "./46/binderfs" [pid 5878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5638] rmdir("./46/bus" [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5878] setpgid(0, 0 [pid 5640] getdents64(3 [pid 5638] <... rmdir resumed>) = 0 [pid 5636] unlink("./46/binderfs" [pid 5878] <... setpgid resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] getdents64(3 [pid 5878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] close(3 [pid 5638] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5636] <... unlink resumed>) = 0 [pid 5638] close(3 [pid 5878] <... openat resumed>) = 3 [pid 5640] <... close resumed>) = 0 [pid 5638] <... close resumed>) = 0 [pid 5636] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5638] rmdir("./46") = 0 [pid 5640] rmdir("./44" [pid 5878] write(3, "1000", 4) = 4 [pid 5638] mkdir("./47", 0777 [pid 5878] close(3 [pid 5638] <... mkdir resumed>) = 0 [pid 5878] <... close resumed>) = 0 [pid 5878] symlink("/dev/binderfs", "./binderfs" [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5878] <... symlink resumed>) = 0 [pid 5638] close(3) = 0 [pid 5878] write(1, "executing program\n", 18 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 executing program [pid 5878] <... write resumed>) = 18 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5878] memfd_create("syzkaller", 0 [pid 5640] <... rmdir resumed>) = 0 [pid 5878] <... memfd_create resumed>) = 3 [pid 5640] mkdir("./45", 0777 [pid 5878] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5640] <... mkdir resumed>) = 0 [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWRci2-upstream-fs/strace-static-x86_64: Process 5879 attached [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5879 [pid 5636] <... umount2 resumed>) = 0 [pid 5879] set_robust_list(0x55555d1b46e0, 24 [pid 5638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5879] <... set_robust_list resumed>) = 0 [pid 5879] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5879] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5879] chdir("./47" [pid 5640] <... openat resumed>) = 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] ioctl(3, LOOP_CLR_FD [pid 5636] newfstatat(AT_FDCWD, "./46/bus" [pid 5640] <... ioctl resumed>) = 0 [pid 5879] <... chdir resumed>) = 0 [pid 5640] close(3 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] <... close resumed>) = 0 [pid 5636] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5879] <... prctl resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5879] setpgid(0, 0 [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5879] <... setpgid resumed>) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5636] <... openat resumed>) = 4 [pid 5879] <... openat resumed>) = 3 [pid 5636] fstat(4ci2-upstream-fs/strace-static-x86_64: Process 5880 attached [pid 5879] write(3, "1000", 4 [pid 5880] set_robust_list(0x55555d1b46e0, 24 [pid 5879] <... write resumed>) = 4 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5879] close(3 [pid 5636] getdents64(4 [pid 5880] <... set_robust_list resumed>) = 0 [pid 5879] <... close resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5879] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5640] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5880 [pid 5636] getdents64(4 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5880] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] close(4 [pid 5880] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5879] write(1, "executing program\n", 18 [pid 5636] <... close resumed>) = 0 [pid 5880] chdir("./45" executing program [pid 5636] rmdir("./46/bus" [pid 5880] <... chdir resumed>) = 0 [pid 5879] <... write resumed>) = 18 [pid 5636] <... rmdir resumed>) = 0 [pid 5880] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5879] memfd_create("syzkaller", 0 [pid 5880] <... prctl resumed>) = 0 [pid 5880] setpgid(0, 0 [pid 5879] <... memfd_create resumed>) = 3 [pid 5636] getdents64(3 [pid 5880] <... setpgid resumed>) = 0 [pid 5880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5879] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5880] <... openat resumed>) = 3 [pid 5879] <... mmap resumed>) = 0x7fb9643a6000 [pid 5880] write(3, "1000", 4 [pid 5636] close(3 [pid 5880] <... write resumed>) = 4 [pid 5636] <... close resumed>) = 0 [pid 5880] close(3) = 0 [pid 5636] rmdir("./46" [pid 5880] symlink("/dev/binderfs", "./binderfs" [pid 5636] <... rmdir resumed>) = 0 [pid 5880] <... symlink resumed>) = 0 [pid 5877] <... write resumed>) = 16777216 [pid 5636] mkdir("./47", 0777) = 0 [pid 5880] write(1, "executing program\n", 18 [pid 5877] munmap(0x7fb9643a6000, 138412032 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5880] <... write resumed>) = 18 executing program [pid 5880] memfd_create("syzkaller", 0 [pid 5636] <... openat resumed>) = 3 [pid 5880] <... memfd_create resumed>) = 3 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5880] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5636] <... ioctl resumed>) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5881 attached [pid 5877] <... munmap resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5881 [pid 5881] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5881] <... set_robust_list resumed>) = 0 [pid 5881] rt_sigprocmask(SIG_SETMASK, [] [pid 5877] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5881] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5877] <... openat resumed>) = 4 [pid 5881] chdir("./47" [pid 5877] ioctl(4, LOOP_SET_FD, 3 [pid 5881] <... chdir resumed>) = 0 [pid 5877] <... ioctl resumed>) = 0 [pid 5881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5881] setpgid(0, 0) = 0 [pid 5881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5877] close(3) = 0 [pid 5881] <... openat resumed>) = 3 [pid 5877] close(4 [pid 5881] write(3, "1000", 4 [pid 5877] <... close resumed>) = 0 [pid 5881] <... write resumed>) = 4 [pid 5877] mkdir("./bus", 0777 [pid 5881] close(3 [pid 5877] <... mkdir resumed>) = 0 [pid 5881] <... close resumed>) = 0 [pid 5881] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5877] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" executing program [pid 5881] write(1, "executing program\n", 18) = 18 [ 289.637211][ T5877] loop0: detected capacity change from 0 to 32768 [pid 5881] memfd_create("syzkaller", 0) = 3 [pid 5881] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5877] <... mount resumed>) = 0 [pid 5877] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5877] chdir("./bus") = 0 [pid 5877] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5877] exit_group(0) = ? [pid 5877] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5877, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=28 /* 0.28 s */} --- [pid 5634] umount2("./44", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5634] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./44/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./44/binderfs") = 0 [pid 5634] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = 0 [pid 5634] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./44/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./44/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./44/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] close(4 [pid 5878] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] <... close resumed>) = 0 [pid 5634] rmdir("./44/bus" [pid 5879] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5634] <... rmdir resumed>) = 0 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./44") = 0 [pid 5634] mkdir("./45", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5882 attached [pid 5882] set_robust_list(0x55555d1b46e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5882 [pid 5882] <... set_robust_list resumed>) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5882] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5882] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5882] chdir("./45") = 0 [pid 5882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5882] setpgid(0, 0) = 0 [pid 5882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5882] write(3, "1000", 4) = 4 [pid 5882] close(3) = 0 [pid 5882] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5882] write(1, "executing program\n", 18) = 18 executing program [pid 5882] memfd_create("syzkaller", 0) = 3 [pid 5882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5880] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5881] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5882] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5879] <... write resumed>) = 16777216 [pid 5879] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5879] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5879] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5879] close(3) = 0 [pid 5879] close(4) = 0 [pid 5879] mkdir("./bus", 0777) = 0 [pid 5879] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [ 290.846942][ T5879] loop3: detected capacity change from 0 to 32768 [pid 5879] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5879] chdir("./bus") = 0 [pid 5879] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5879] exit_group(0) = ? [pid 5879] +++ exited with 0 +++ [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5879, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=28 /* 0.28 s */} --- [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5881] <... write resumed>) = 16777216 [pid 5638] <... restart_syscall resumed>) = 0 [pid 5881] munmap(0x7fb9643a6000, 138412032 [pid 5638] umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5638] unlink("./47/binderfs") = 0 [pid 5638] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5881] <... munmap resumed>) = 0 [pid 5881] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 5881] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5881] close(3) = 0 [pid 5881] close(4) = 0 [pid 5881] mkdir("./bus", 0777) = 0 [pid 5881] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "") = 0 [pid 5881] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5878] <... write resumed>) = 16777216 [pid 5881] <... openat resumed>) = 3 [pid 5878] munmap(0x7fb9643a6000, 138412032 [pid 5881] chdir("./bus") = 0 [pid 5881] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = -1 EBUSY (Device or resource busy) [ 291.001521][ T5881] loop1: detected capacity change from 0 to 32768 [pid 5881] exit_group(0) = ? [pid 5881] +++ exited with 0 +++ [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5881, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=35 /* 0.35 s */} --- [pid 5878] <... munmap resumed>) = 0 [pid 5638] <... umount2 resumed>) = 0 [pid 5878] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5636] umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5878] <... openat resumed>) = 4 [pid 5638] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5878] ioctl(4, LOOP_SET_FD, 3 [pid 5638] newfstatat(AT_FDCWD, "./47/bus" [pid 5636] <... openat resumed>) = 3 [pid 5878] <... ioctl resumed>) = 0 [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5638] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] getdents64(3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5638] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5878] close(3 [pid 5636] umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5878] <... close resumed>) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5878] close(4 [pid 5636] newfstatat(AT_FDCWD, "./47/binderfs" [pid 5878] <... close resumed>) = 0 [pid 5638] fstat(4 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5878] mkdir("./bus", 0777 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] unlink("./47/binderfs" [pid 5638] getdents64(4 [pid 5636] <... unlink resumed>) = 0 [pid 5878] <... mkdir resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5878] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5638] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] close(4) = 0 [pid 5638] rmdir("./47/bus") = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./47") = 0 [pid 5638] mkdir("./48", 0777) = 0 [ 291.093903][ T5878] loop2: detected capacity change from 0 to 32768 [pid 5878] <... mount resumed>) = 0 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5878] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5638] ioctl(3, LOOP_CLR_FD) = 0 [pid 5878] chdir("./bus") = 0 [pid 5638] close(3 [pid 5880] <... write resumed>) = 16777216 [pid 5878] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] <... close resumed>) = 0 [pid 5878] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5880] munmap(0x7fb9643a6000, 138412032 [pid 5878] exit_group(0 [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5878] <... exit_group resumed>) = ? [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... umount2 resumed>) = 0 [pid 5878] +++ exited with 0 +++ ci2-upstream-fs/strace-static-x86_64: Process 5883 attached [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5878, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=25 /* 0.25 s */} --- [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5883] set_robust_list(0x55555d1b46e0, 24 [pid 5638] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5883 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5883] <... set_robust_list resumed>) = 0 [pid 5883] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] newfstatat(AT_FDCWD, "./47/bus" [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5883] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5880] <... munmap resumed>) = 0 [pid 5883] chdir("./48" [pid 5880] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... restart_syscall resumed>) = 0 [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5883] <... chdir resumed>) = 0 [pid 5880] <... openat resumed>) = 4 [pid 5636] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5883] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5880] ioctl(4, LOOP_SET_FD, 3 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5883] <... prctl resumed>) = 0 [pid 5883] setpgid(0, 0 [pid 5880] <... ioctl resumed>) = 0 [pid 5636] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... openat resumed>) = 4 [pid 5883] <... setpgid resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] fstat(4 [pid 5880] close(3 [pid 5883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5880] <... close resumed>) = 0 [pid 5637] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5883] <... openat resumed>) = 3 [pid 5880] close(4 [pid 5636] getdents64(4 [pid 5880] <... close resumed>) = 0 [pid 5880] mkdir("./bus", 0777 [pid 5883] write(3, "1000", 4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5883] <... write resumed>) = 4 [pid 5880] <... mkdir resumed>) = 0 [pid 5637] fstat(3 [pid 5883] close(3 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5883] <... close resumed>) = 0 [pid 5880] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] getdents64(3 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5883] symlink("/dev/binderfs", "./binderfs" [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5636] close(4 [pid 5883] <... symlink resumed>) = 0 [pid 5637] umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... close resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] rmdir("./47/bus" [pid 5883] write(1, "executing program\n", 18 [pid 5637] newfstatat(AT_FDCWD, "./46/binderfs" [pid 5636] <... rmdir resumed>) = 0 [ 291.231344][ T5880] loop4: detected capacity change from 0 to 32768 [pid 5883] <... write resumed>) = 18 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 executing program [pid 5883] memfd_create("syzkaller", 0 [pid 5880] <... mount resumed>) = 0 [pid 5637] unlink("./46/binderfs" [pid 5636] getdents64(3 [pid 5883] <... memfd_create resumed>) = 3 [pid 5637] <... unlink resumed>) = 0 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5880] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5637] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] close(3 [pid 5883] <... mmap resumed>) = 0x7fb9643a6000 [pid 5880] <... openat resumed>) = 3 [pid 5636] <... close resumed>) = 0 [pid 5636] rmdir("./47" [pid 5880] chdir("./bus" [pid 5636] <... rmdir resumed>) = 0 [pid 5880] <... chdir resumed>) = 0 [pid 5636] mkdir("./48", 0777) = 0 [pid 5880] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5880] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5880] exit_group(0 [pid 5636] <... openat resumed>) = 3 [pid 5880] <... exit_group resumed>) = ? [pid 5636] ioctl(3, LOOP_CLR_FD) = 0 [pid 5636] close(3) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5880] +++ exited with 0 +++ [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5880, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=33 /* 0.33 s */} --- ci2-upstream-fs/strace-static-x86_64: Process 5884 attached [pid 5636] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5884 [pid 5884] set_robust_list(0x55555d1b46e0, 24 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5884] <... set_robust_list resumed>) = 0 [pid 5884] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5884] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5884] chdir("./48") = 0 [pid 5884] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5882] <... write resumed>) = 16777216 [pid 5640] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5884] <... prctl resumed>) = 0 [pid 5882] munmap(0x7fb9643a6000, 138412032 [pid 5884] setpgid(0, 0 [pid 5640] <... openat resumed>) = 3 [pid 5637] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5884] <... setpgid resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5640] fstat(3 [pid 5637] newfstatat(AT_FDCWD, "./46/bus" [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5884] write(3, "1000", 4) = 4 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5884] close(3 [pid 5640] getdents64(3 [pid 5637] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5884] <... close resumed>) = 0 [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5884] symlink("/dev/binderfs", "./binderfs" [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] openat(AT_FDCWD, "./46/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5884] <... symlink resumed>) = 0 [pid 5640] umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... openat resumed>) = 4 [pid 5637] fstat(4 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5884] write(1, "executing program\n", 18 [pid 5640] newfstatat(AT_FDCWD, "./45/binderfs" [pid 5884] <... write resumed>) = 18 [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] getdents64(4, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5884] memfd_create("syzkaller", 0 executing program [pid 5637] getdents64(4 [pid 5640] unlink("./45/binderfs" [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5884] <... memfd_create resumed>) = 3 [pid 5637] close(4 [pid 5884] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5640] <... unlink resumed>) = 0 [pid 5637] <... close resumed>) = 0 [pid 5884] <... mmap resumed>) = 0x7fb9643a6000 [pid 5637] rmdir("./46/bus" [pid 5640] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... rmdir resumed>) = 0 [pid 5882] <... munmap resumed>) = 0 [pid 5882] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5882] ioctl(4, LOOP_SET_FD, 3 [pid 5637] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5882] <... ioctl resumed>) = 0 [pid 5637] close(3) = 0 [pid 5637] rmdir("./46" [pid 5882] close(3 [pid 5637] <... rmdir resumed>) = 0 [pid 5882] <... close resumed>) = 0 [pid 5882] close(4) = 0 [pid 5882] mkdir("./bus", 0777 [pid 5637] mkdir("./47", 0777 [pid 5882] <... mkdir resumed>) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5882] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5637] ioctl(3, LOOP_CLR_FD) = 0 [pid 5637] close(3) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5885 attached [pid 5885] set_robust_list(0x55555d1b46e0, 24 [pid 5637] <... clone resumed>, child_tidptr=0x55555d1b46d0) = 5885 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5885] <... set_robust_list resumed>) = 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5882] <... mount resumed>) = 0 [pid 5885] chdir("./47" [pid 5640] <... umount2 resumed>) = 0 [pid 5885] <... chdir resumed>) = 0 [pid 5882] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5882] chdir("./bus" [pid 5640] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5882] <... chdir resumed>) = 0 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5885] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5882] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5640] newfstatat(AT_FDCWD, "./45/bus" [pid 5885] <... prctl resumed>) = 0 [pid 5885] setpgid(0, 0 [pid 5882] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5640] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5885] <... setpgid resumed>) = 0 [pid 5882] exit_group(0 [pid 5885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5882] <... exit_group resumed>) = ? [pid 5640] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5885] <... openat resumed>) = 3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5885] write(3, "1000", 4 [pid 5640] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5885] <... write resumed>) = 4 [pid 5882] +++ exited with 0 +++ [pid 5640] <... openat resumed>) = 4 [pid 5885] close(3 [pid 5640] fstat(4 [pid 5885] <... close resumed>) = 0 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5885] symlink("/dev/binderfs", "./binderfs" [pid 5640] getdents64(4 [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5882, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=35 /* 0.35 s */} --- [pid 5885] <... symlink resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] umount2("./45", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5885] write(1, "executing program\n", 18 [pid 5640] getdents64(4 executing program [pid 5634] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5885] <... write resumed>) = 18 [pid 5640] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5634] <... openat resumed>) = 3 [pid 5640] close(4 [pid 5885] memfd_create("syzkaller", 0 [pid 5640] <... close resumed>) = 0 [pid 5634] fstat(3 [pid 5640] rmdir("./45/bus" [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5885] <... memfd_create resumed>) = 3 [pid 5640] <... rmdir resumed>) = 0 [pid 5634] getdents64(3 [pid 5885] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5634] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5640] getdents64(3 [pid 5634] umount2("./45/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5640] close(3 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] <... close resumed>) = 0 [pid 5634] newfstatat(AT_FDCWD, "./45/binderfs" [pid 5640] rmdir("./45") = 0 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] unlink("./45/binderfs" [pid 5640] mkdir("./46", 0777 [pid 5634] <... unlink resumed>) = 0 [pid 5640] <... mkdir resumed>) = 0 [pid 5634] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5640] ioctl(3, LOOP_CLR_FD) = 0 [pid 5640] close(3) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5640] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5886 attached , child_tidptr=0x55555d1b46d0) = 5886 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5886] set_robust_list(0x55555d1b46e0, 24 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5886] <... set_robust_list resumed>) = 0 [pid 5886] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5886] chdir("./46") = 0 [pid 5886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5886] setpgid(0, 0) = 0 [pid 5886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5886] write(3, "1000", 4) = 4 [pid 5886] close(3) = 0 [pid 5886] symlink("/dev/binderfs", "./binderfs" [pid 5634] <... umount2 resumed>) = 0 [pid 5634] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] newfstatat(AT_FDCWD, "./45/bus", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] umount2("./45/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./45/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 5634] fstat(4 [pid 5886] <... symlink resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] getdents64(4 [pid 5886] write(1, "executing program\n", 18 [pid 5634] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5634] getdents64(4, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5886] <... write resumed>) = 18 executing program [pid 5634] close(4 [pid 5886] memfd_create("syzkaller", 0 [pid 5634] <... close resumed>) = 0 [pid 5886] <... memfd_create resumed>) = 3 [pid 5634] rmdir("./45/bus" [pid 5886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5634] <... rmdir resumed>) = 0 [pid 5886] <... mmap resumed>) = 0x7fb9643a6000 [pid 5634] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5634] rmdir("./45") = 0 [pid 5634] mkdir("./46", 0777) = 0 [pid 5634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5634] ioctl(3, LOOP_CLR_FD) = 0 [pid 5634] close(3) = 0 [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5887 attached , child_tidptr=0x55555d1b46d0) = 5887 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5887] set_robust_list(0x55555d1b46e0, 24) = 0 [pid 5887] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5887] chdir("./46") = 0 [pid 5887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5887] setpgid(0, 0) = 0 [pid 5887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5887] write(3, "1000", 4) = 4 [pid 5887] close(3) = 0 [pid 5887] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5887] write(1, "executing program\n", 18 [pid 5883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5887] <... write resumed>) = 18 executing program [pid 5887] memfd_create("syzkaller", 0) = 3 [pid 5887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb9643a6000 [pid 5884] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5885] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5886] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5883] <... write resumed>) = 16777216 [pid 5883] munmap(0x7fb9643a6000, 138412032) = 0 [pid 5883] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5884] <... write resumed>) = 16777216 [pid 5884] munmap(0x7fb9643a6000, 138412032 [pid 5883] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5883] close(3) = 0 [pid 5883] close(4) = 0 [pid 5884] <... munmap resumed>) = 0 [pid 5883] mkdir("./bus", 0777 [pid 5885] <... write resumed>) = 16777216 [pid 5884] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5883] <... mkdir resumed>) = 0 [pid 5885] munmap(0x7fb9643a6000, 138412032 [pid 5884] <... openat resumed>) = 4 [pid 5883] mount("/dev/loop3", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5884] ioctl(4, LOOP_SET_FD, 3) = 0 [ 292.907218][ T5883] set_capacity_and_notify: 1 callbacks suppressed [ 292.907241][ T5883] loop3: detected capacity change from 0 to 32768 [pid 5884] close(3 [pid 5885] <... munmap resumed>) = 0 [pid 5884] <... close resumed>) = 0 [pid 5885] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5884] close(4 [pid 5885] <... openat resumed>) = 4 [pid 5884] <... close resumed>) = 0 [pid 5885] ioctl(4, LOOP_SET_FD, 3 [pid 5884] mkdir("./bus", 0777) = 0 [pid 5886] <... write resumed>) = 16777216 [pid 5886] munmap(0x7fb9643a6000, 138412032 [pid 5884] mount("/dev/loop1", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5885] <... ioctl resumed>) = 0 [ 292.955700][ T5884] loop1: detected capacity change from 0 to 32768 [pid 5885] close(3) = 0 [pid 5885] close(4 [pid 5884] <... mount resumed>) = 0 [pid 5883] <... mount resumed>) = 0 [pid 5885] <... close resumed>) = 0 [pid 5884] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5885] mkdir("./bus", 0777 [pid 5886] <... munmap resumed>) = 0 [pid 5884] <... openat resumed>) = 3 [pid 5883] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5886] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5885] <... mkdir resumed>) = 0 [pid 5884] chdir("./bus" [pid 5883] <... openat resumed>) = 3 [pid 5885] mount("/dev/loop2", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5884] <... chdir resumed>) = 0 [pid 5883] chdir("./bus" [pid 5886] <... openat resumed>) = 4 [pid 5886] ioctl(4, LOOP_SET_FD, 3 [pid 5883] <... chdir resumed>) = 0 [pid 5886] <... ioctl resumed>) = 0 [pid 5884] openat(AT_FDCWD, "/dev/loop1", O_RDWR [ 293.007676][ T5885] loop2: detected capacity change from 0 to 32768 [pid 5883] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5887] <... write resumed>) = 16777216 [pid 5884] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5886] close(3 [pid 5883] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5887] munmap(0x7fb9643a6000, 138412032 [pid 5886] <... close resumed>) = 0 [pid 5884] exit_group(0 [pid 5883] exit_group(0 [pid 5886] close(4 [pid 5883] <... exit_group resumed>) = ? [pid 5886] <... close resumed>) = 0 [pid 5884] <... exit_group resumed>) = ? [pid 5886] mkdir("./bus", 0777) = 0 [pid 5885] <... mount resumed>) = 0 [pid 5884] +++ exited with 0 +++ [pid 5883] +++ exited with 0 +++ [pid 5886] mount("/dev/loop4", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5885] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5636] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5884, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=32 /* 0.32 s */} --- [pid 5885] <... openat resumed>) = 3 [pid 5638] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5883, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=25 /* 0.25 s */} --- [pid 5636] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5887] <... munmap resumed>) = 0 [pid 5885] chdir("./bus" [pid 5887] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5638] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5885] <... chdir resumed>) = 0 [pid 5636] <... restart_syscall resumed>) = 0 [pid 5887] <... openat resumed>) = 4 [pid 5885] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5638] <... restart_syscall resumed>) = 0 [pid 5887] ioctl(4, LOOP_SET_FD, 3 [pid 5885] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5636] umount2("./48", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5638] umount2("./48", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] <... openat resumed>) = 3 [ 293.043969][ T5886] loop4: detected capacity change from 0 to 32768 [pid 5885] exit_group(0 [pid 5638] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5885] <... exit_group resumed>) = ? [pid 5638] <... openat resumed>) = 3 [pid 5636] fstat(3 [pid 5638] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5885] +++ exited with 0 +++ [pid 5638] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5887] <... ioctl resumed>) = 0 [pid 5638] umount2("./48/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5885, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=29 /* 0.29 s */} --- [pid 5636] getdents64(3 [pid 5887] close(3 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5887] <... close resumed>) = 0 [pid 5886] <... mount resumed>) = 0 [pid 5638] newfstatat(AT_FDCWD, "./48/binderfs" [pid 5637] <... restart_syscall resumed>) = 0 [pid 5887] close(4) = 0 [pid 5886] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5638] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./48/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5887] mkdir("./bus", 0777 [pid 5886] <... openat resumed>) = 3 [pid 5638] unlink("./48/binderfs" [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5886] chdir("./bus" [pid 5636] newfstatat(AT_FDCWD, "./48/binderfs" [pid 5886] <... chdir resumed>) = 0 [pid 5637] umount2("./47", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5886] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [ 293.108740][ T5887] loop0: detected capacity change from 0 to 32768 [pid 5636] unlink("./48/binderfs" [pid 5886] <... openat resumed>) = -1 EBUSY (Device or resource busy) [pid 5637] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] fstat(3 [pid 5886] exit_group(0 [pid 5887] <... mkdir resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5887] mount("/dev/loop0", "./bus", "jfs", MS_DIRSYNC|MS_NODIRATIME|MS_REC|MS_SILENT|MS_POSIXACL, "" [pid 5886] <... exit_group resumed>) = ? [pid 5637] getdents64(3 [pid 5636] <... unlink resumed>) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5637] umount2("./47/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./47/binderfs" [pid 5886] +++ exited with 0 +++ [pid 5638] <... unlink resumed>) = 0 [pid 5637] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] unlink("./47/binderfs" [pid 5640] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5886, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=26 /* 0.26 s */} --- [pid 5638] umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] <... unlink resumed>) = 0 [pid 5640] restart_syscall(<... resuming interrupted rt_sigprocmask ...> [pid 5637] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5640] <... restart_syscall resumed>) = 0 [pid 5640] umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5640] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5640] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5640] getdents64(3 [pid 5887] <... mount resumed>) = 0 [pid 5640] <... getdents64 resumed>, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5887] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY [pid 5640] umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5887] <... openat resumed>) = 3 [pid 5640] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5640] newfstatat(AT_FDCWD, "./46/binderfs" [pid 5887] chdir("./bus" [pid 5640] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5887] <... chdir resumed>) = 0 [pid 5640] unlink("./46/binderfs") = 0 [pid 5887] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5640] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5887] exit_group(0) = ? [pid 5887] +++ exited with 0 +++ [pid 5634] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5887, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=24 /* 0.24 s */} --- [pid 5634] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5634] umount2("./46", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = 0 [pid 5634] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5634] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5637] <... umount2 resumed>) = 0 [pid 5634] fstat(3 [pid 5637] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] newfstatat(AT_FDCWD, "./48/bus" [pid 5634] getdents64(3, 0x55555d1b5790 /* 4 entries */, 32768) = 104 [pid 5634] umount2("./46/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5637] newfstatat(AT_FDCWD, "./47/bus" [pid 5636] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5634] newfstatat(AT_FDCWD, "./46/binderfs" [pid 5637] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5636] umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] umount2("./47/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5636] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5636] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5637] openat(AT_FDCWD, "./47/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... openat resumed>) = 4 [pid 5634] <... newfstatat resumed>, {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... openat resumed>) = 4 [pid 5636] fstat(4 [pid 5634] unlink("./46/binderfs" [pid 5636] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5634] <... unlink resumed>) = 0 [pid 5636] getdents64(4 [pid 5634] umount2("./46/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] fstat(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5638] <... umount2 resumed>) = 0 [pid 5637] <... fstat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5636] getdents64(4 [pid 5638] umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] getdents64(4 [pid 5636] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] close(4) = 0 [pid 5638] newfstatat(AT_FDCWD, "./48/bus" [pid 5637] getdents64(4 [pid 5636] rmdir("./48/bus" [pid 5638] <... newfstatat resumed>, {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] close(4) = 0 [pid 5638] umount2("./48/bus", MNT_FORCE|UMOUNT_NOFOLLOW [pid 5637] rmdir("./47/bus") = 0 [pid 5638] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5638] openat(AT_FDCWD, "./48/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... rmdir resumed>) = 0 [pid 5638] <... openat resumed>) = 4 [pid 5636] getdents64(3 [pid 5638] fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5637] getdents64(3 [pid 5636] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] <... getdents64 resumed>, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5638] getdents64(4 [pid 5637] close(3 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 2 entries */, 32768) = 48 [pid 5636] close(3 [pid 5638] getdents64(4 [pid 5637] <... close resumed>) = 0 [pid 5636] <... close resumed>) = 0 [pid 5640] <... umount2 resumed>) = 0 [pid 5638] <... getdents64 resumed>, 0x55555d1bd7d0 /* 0 entries */, 32768) = 0 [pid 5637] rmdir("./47" [pid 5638] close(4) = 0 [pid 5637] <... rmdir resumed>) = 0 [pid 5638] rmdir("./48/bus" [pid 5637] mkdir("./48", 0777 [pid 5638] <... rmdir resumed>) = 0 [pid 5638] getdents64(3, 0x55555d1b5790 /* 0 entries */, 32768) = 0 [pid 5637] <... mkdir resumed>) = 0 [pid 5638] close(3) = 0 [pid 5638] rmdir("./48" [pid 5637] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [ 293.327325][ C0] ================================================================== [ 293.327355][ C0] BUG: KASAN: slab-use-after-free in lbmIODone+0x130e/0x16b0 [ 293.327428][ C0] Read of size 4 at addr ffff88802a93cc08 by task rcuc/0/20 [ 293.327458][ C0] [ 293.327490][ C0] CPU: 0 UID: 0 PID: 20 Comm: rcuc/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 293.327519][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 293.327547][ C0] Call Trace: [pid 5638] <... rmdir resumed>) = 0 [pid 5637] ioctl(3, LOOP_CLR_FD [pid 5638] mkdir("./49", 0777 [pid 5637] <... ioctl resumed>) = 0 [pid 5636] rmdir("./48") = 0 [pid 5636] mkdir("./49", 0777) = 0 [pid 5636] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5637] close(3 [pid 5636] <... openat resumed>) = 3 [pid 5637] <... close resumed>) = 0 [pid 5636] ioctl(3, LOOP_CLR_FD [pid 5638] <... mkdir resumed>) = 0 [pid 5636] <... ioctl resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] close(3 [pid 5638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... close resumed>) = 0 [pid 5638] <... openat resumed>) = 3 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] ioctl(3, LOOP_CLR_FD [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] <... ioctl resumed>) = 0 [ 293.327558][ C0] [ 293.327568][ C0] dump_stack_lvl+0xe8/0x150 [ 293.327609][ C0] print_address_description+0x55/0x1e0 [ 293.327643][ C0] ? lbmIODone+0x130e/0x16b0 [ 293.327679][ C0] print_report+0x58/0x70 [ 293.327709][ C0] kasan_report+0x117/0x150 [ 293.327756][ C0] ? lbmIODone+0x130e/0x16b0 [ 293.327794][ C0] lbmIODone+0x130e/0x16b0 [ 293.327828][ C0] ? blkg_put+0x22/0x240 [ 293.327854][ C0] ? blkg_put+0x22/0x240 [ 293.327878][ C0] ? blkg_put+0x18d/0x240 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [ 293.327904][ C0] ? bio_endio+0x984/0xac0 [ 293.327935][ C0] blk_update_request+0x57b/0xe50 [ 293.327974][ C0] blk_mq_end_request+0x3e/0x70 [ 293.328007][ C0] blk_done_softirq+0x10a/0x160 [ 293.328038][ C0] handle_softirqs+0x1da/0x6d0 [ 293.328076][ C0] __local_bh_enable_ip+0x16f/0x2b0 [ 293.328107][ C0] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 293.328131][ C0] ? rcu_cpu_kthread+0x217/0x1740 [ 293.328164][ C0] ? rcu_cpu_kthread+0x217/0x1740 [ 293.328193][ C0] rcu_cpu_kthread+0xb6c/0x1740 [ 293.328236][ C0] ? __pfx_rcu_cpu_kthread+0x10/0x10 [ 293.328277][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 293.328309][ C0] smpboot_thread_fn+0x565/0xa70 [ 293.328344][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 293.328382][ C0] kthread+0x38b/0x470 [ 293.328407][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 293.328449][ C0] ? __pfx_kthread+0x10/0x10 [ 293.328472][ C0] ret_from_fork+0x514/0xb70 [ 293.328498][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 293.328521][ C0] ? __switch_to+0xc89/0x1420 [ 293.328556][ C0] ? __pfx_kthread+0x10/0x10 [ 293.328579][ C0] ret_from_fork_asm+0x1a/0x30 [ 293.328609][ C0] [ 293.328618][ C0] [ 293.328624][ C0] Allocated by task 5886: [ 293.328636][ C0] kasan_save_track+0x3e/0x80 [ 293.328666][ C0] __kasan_kmalloc+0x93/0xb0 [ 293.328697][ C0] __kmalloc_cache_noprof+0x3d5/0x680 [ 293.328727][ C0] lmLogInit+0x3e5/0x1a20 [ 293.328756][ C0] lmLogOpen+0x4e3/0xf90 [ 293.328784][ C0] jfs_mount_rw+0xf3/0x670 [ 293.328813][ C0] jfs_fill_super+0x769/0xda0 [ 293.328836][ C0] get_tree_bdev_flags+0x430/0x4f0 [ 293.328862][ C0] vfs_get_tree+0x92/0x2a0 [ 293.328887][ C0] do_new_mount+0x319/0xdc0 [ 293.328906][ C0] __se_sys_mount+0x31d/0x420 [ 293.328926][ C0] do_syscall_64+0x166/0x520 [ 293.328959][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 293.328982][ C0] [ 293.328987][ C0] Freed by task 5640: [ 293.328998][ C0] kasan_save_track+0x3e/0x80 [ 293.329027][ C0] kasan_save_free_info+0x40/0x50 [ 293.329049][ C0] __kasan_slab_free+0x5c/0x80 [ 293.329078][ C0] kfree+0x1c5/0x6d0 [ 293.329101][ C0] lmLogShutdown+0x456/0x850 [ 293.329134][ C0] lmLogClose+0x28c/0x530 [ 293.329165][ C0] jfs_umount+0x2da/0x3b0 [ 293.329209][ C0] jfs_put_super+0x8c/0x190 [ 293.329230][ C0] generic_shutdown_super+0x13d/0x2d0 [ 293.329251][ C0] kill_block_super+0x44/0xa0 [ 293.329277][ C0] deactivate_locked_super+0xbc/0x110 [ 293.329298][ C0] cleanup_mnt+0x3d3/0x460 [ 293.329349][ C0] task_work_run+0x1d9/0x270 [ 293.329372][ C0] ptrace_notify+0x27c/0x2b0 [ 293.329399][ C0] ptrace_report_syscall_exit+0x2d/0x50 [ 293.329445][ C0] do_syscall_64+0x4a0/0x520 [ 293.329464][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 293.329486][ C0] [ 293.329492][ C0] The buggy address belongs to the object at ffff88802a93cc00 [ 293.329492][ C0] which belongs to the cache kmalloc-256 of size 256 [ 293.329512][ C0] The buggy address is located 8 bytes inside of [ 293.329512][ C0] freed 256-byte region [ffff88802a93cc00, ffff88802a93cd00) [ 293.329538][ C0] [ 293.329544][ C0] The buggy address belongs to the physical page: [ 293.329570][ C0] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88802a93c200 pfn:0x2a93c [ 293.329596][ C0] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 293.329617][ C0] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 293.329643][ C0] page_type: f5(slab) [ 293.329665][ C0] raw: 0080000000000240 ffff88813ffbdb40 ffffea0000ac4e10 ffffea0000af3e90 [ 293.329687][ C0] raw: ffff88802a93c200 000000000010000a 00000000f5000000 0000000000000000 [ 293.329710][ C0] head: 0080000000000240 ffff88813ffbdb40 ffffea0000ac4e10 ffffea0000af3e90 [ 293.329732][ C0] head: ffff88802a93c200 000000000010000a 00000000f5000000 0000000000000000 [ 293.329753][ C0] head: 0080000000000001 ffffffffffffff81 00000000ffffffff 00000000ffffffff [ 293.329771][ C0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000002 [ 293.329782][ C0] page dumped because: kasan: bad access detected [ 293.329799][ C0] page_owner tracks the page as allocated [ 293.329808][ C0] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd2000(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 16088833338 [ 293.329851][ C0] post_alloc_hook+0x1f9/0x250 [ 293.329881][ C0] get_page_from_freelist+0x2591/0x2600 [ 293.329912][ C0] __alloc_frozen_pages_noprof+0x230/0x5c0 [ 293.329945][ C0] allocate_slab+0x7d/0x620 [ 293.329968][ C0] refill_objects+0x2d8/0x350 [ 293.329990][ C0] __pcs_replace_empty_main+0x339/0x690 [ 293.330012][ C0] __kmalloc_noprof+0x54b/0x790 [ 293.330040][ C0] usb_hcd_submit_urb+0x885/0x1b40 [ 293.330072][ C0] usb_start_wait_urb+0x13f/0x5b0 [ 293.330103][ C0] usb_control_msg+0x234/0x3e0 [ 293.330132][ C0] usb_get_string+0xa2/0x3e0 [ 293.330151][ C0] usb_string_sub+0x76/0x420 [ 293.330181][ C0] usb_string+0x34f/0x790 [ 293.330210][ C0] usb_cache_string+0x7d/0xf0 [ 293.330240][ C0] usb_new_device+0x2d1/0x1680 [ 293.330268][ C0] register_root_hub+0x250/0x5c0 [ 293.330295][ C0] page_owner free stack trace missing [ 293.330303][ C0] [ 293.330308][ C0] Memory state around the buggy address: [ 293.330321][ C0] ffff88802a93cb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 293.330337][ C0] ffff88802a93cb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 293.330354][ C0] >ffff88802a93cc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 293.330366][ C0] ^ [ 293.330378][ C0] ffff88802a93cc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 293.330394][ C0] ffff88802a93cd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 293.330406][ C0] ================================================================== [ 293.330457][ C0] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 294.000369][ C0] CPU: 0 UID: 0 PID: 20 Comm: rcuc/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 294.009698][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 294.019964][ C0] Call Trace: [ 294.023299][ C0] [ 294.026266][ C0] vpanic+0x56d/0xa60 [ 294.030277][ C0] ? __pfx_vpanic+0x10/0x10 [ 294.034896][ C0] ? __pfx___schedule+0x10/0x10 [ 294.039786][ C0] panic+0xc5/0xd0 [ 294.043547][ C0] ? __pfx_panic+0x10/0x10 [ 294.048002][ C0] ? preempt_schedule_common+0x7f/0xd0 [ 294.053597][ C0] ? lbmIODone+0x130e/0x16b0 [ 294.058428][ C0] check_panic_on_warn+0x89/0xb0 [ 294.063395][ C0] ? lbmIODone+0x130e/0x16b0 [ 294.068019][ C0] end_report+0x73/0x170 [ 294.072296][ C0] ? lbmIODone+0x130e/0x16b0 [ 294.077018][ C0] kasan_report+0x128/0x150 [ 294.081563][ C0] ? lbmIODone+0x130e/0x16b0 [ 294.086212][ C0] lbmIODone+0x130e/0x16b0 [ 294.090667][ C0] ? blkg_put+0x22/0x240 [ 294.094937][ C0] ? blkg_put+0x22/0x240 [ 294.099209][ C0] ? blkg_put+0x18d/0x240 [ 294.103576][ C0] ? bio_endio+0x984/0xac0 [ 294.108127][ C0] blk_update_request+0x57b/0xe50 [ 294.113205][ C0] blk_mq_end_request+0x3e/0x70 [ 294.118106][ C0] blk_done_softirq+0x10a/0x160 [ 294.123010][ C0] handle_softirqs+0x1da/0x6d0 [ 294.127844][ C0] __local_bh_enable_ip+0x16f/0x2b0 [ 294.133083][ C0] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 294.139267][ C0] ? rcu_cpu_kthread+0x217/0x1740 [ 294.144324][ C0] ? rcu_cpu_kthread+0x217/0x1740 [ 294.149410][ C0] rcu_cpu_kthread+0xb6c/0x1740 [ 294.154304][ C0] ? __pfx_rcu_cpu_kthread+0x10/0x10 [ 294.159625][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 294.164683][ C0] smpboot_thread_fn+0x565/0xa70 [ 294.169664][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 294.174721][ C0] kthread+0x38b/0x470 [ 294.178820][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 294.184306][ C0] ? __pfx_kthread+0x10/0x10 [ 294.188943][ C0] ret_from_fork+0x514/0xb70 [ 294.193583][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 294.198748][ C0] ? __switch_to+0xc89/0x1420 [ 294.203500][ C0] ? __pfx_kthread+0x10/0x10 [ 294.208134][ C0] ret_from_fork_asm+0x1a/0x30 [ 294.212956][ C0] [ 294.216634][ C0] Kernel Offset: disabled [ 294.221000][ C0] Rebooting in 86400 seconds..