ci-upstream-net-kasan-gce/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-net-kasan-gce/syz-executor801341865 <...> Warning: Permanently added '10.128.0.27' (ED25519) to the list of known hosts. execve("ci-upstream-net-kasan-gce/syz-executor801341865", ["ci-upstream-net-kasan-gce/syz-executor801341865"], 0x7ffed49e1f90 /* 10 vars */) = 0 brk(NULL) = 0x55555f910000 brk(0x55555f910d80) = 0x55555f910d80 arch_prctl(ARCH_SET_FS, 0x55555f910400) = 0 set_tid_address(0x55555f9106d0) = 5631 set_robust_list(0x55555f9106e0, 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/ci-upstream-net-kasan-gce/syz-executor801341865", 4096) = 53 getrandom("\x3a\x90\x4f\xe8\x4f\xaa\x33\xb2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555f910d80 brk(0x55555f931d80) = 0x55555f931d80 brk(0x55555f932000) = 0x55555f932000 mprotect(0x7f72dba2d000, 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|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5633 attached , child_tidptr=0x55555f9106d0) = 5633 [pid 5633] set_robust_list(0x55555f9106e0, 24) = 0 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5633] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5633] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5634 attached [pid 5631] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5634 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5635 attached [pid 5634] set_robust_list(0x55555f9106e0, 24 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5635] set_robust_list(0x55555f9106e0, 24 [pid 5634] <... set_robust_list resumed>) = 0 [pid 5633] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5635 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5635] <... set_robust_list resumed>) = 0 [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5635] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5635] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5635] <... prctl resumed>) = 0 [pid 5635] setpgid(0, 0) = 0 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5636 attached [pid 5636] set_robust_list(0x55555f9106e0, 24) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5636 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] rt_sigprocmask(SIG_BLOCK, ~[]ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5637 attached [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5635] <... openat resumed>) = 3 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] set_robust_list(0x55555f9106e0, 24 [pid 5635] write(3, "1000", 4 [pid 5634] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5637 [pid 5637] <... set_robust_list resumed>) = 0 [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5635] <... write resumed>) = 4 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5635] close(3 [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5639 attached ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5638 attached [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5635] <... close resumed>) = 0 [pid 5631] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5638 [pid 5637] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5639] set_robust_list(0x55555f9106e0, 24 [pid 5637] <... prctl resumed>) = 0 [pid 5636] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5639 [pid 5639] <... set_robust_list resumed>) = 0 [pid 5637] setpgid(0, 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... setpgid resumed>) = 0 [pid 5637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5639] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... openat resumed>) = 3 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5639] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] set_robust_list(0x55555f9106e0, 24 executing program [pid 5635] write(1, "executing program\n", 18 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... set_robust_list resumed>) = 0 [pid 5635] <... write resumed>) = 18 [pid 5639] <... prctl resumed>) = 0 [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] write(3, "1000", 4 [pid 5635] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5639] setpgid(0, 0 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] <... write resumed>) = 4 [pid 5639] <... setpgid resumed>) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] close(3 [pid 5635] <... socket resumed>) = 3 [pid 5639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5637] <... close resumed>) = 0 [pid 5639] <... openat resumed>) = 3 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5640 attached [pid 5638] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5637] write(1, "executing program\n", 18 executing program [pid 5635] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388459, nlmsg_pid=635427838}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTROUTE|MSG_EOR|MSG_CONFIRM|MSG_NOSIGNAL|MSG_MORE|MSG_ZEROCOPY [pid 5631] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5640 [pid 5640] set_robust_list(0x55555f9106e0, 24 [pid 5639] write(3, "1000", 4 [pid 5638] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5637] <... write resumed>) = 18 [pid 5639] <... write resumed>) = 4 [pid 5637] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5639] close(3 [pid 5637] <... socket resumed>) = 3 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] <... close resumed>) = 0 executing program [pid 5639] write(1, "executing program\n", 18 [pid 5637] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388459, nlmsg_pid=635427838}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTROUTE|MSG_EOR|MSG_CONFIRM|MSG_NOSIGNAL|MSG_MORE|MSG_ZEROCOPY [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] <... set_robust_list resumed>) = 0 [pid 5639] <... write resumed>) = 18 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5641 attached [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5641 [pid 5639] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5641] set_robust_list(0x55555f9106e0, 24 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5639] <... socket resumed>) = 3 [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] <... set_robust_list resumed>) = 0 [pid 5640] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5639] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388459, nlmsg_pid=635427838}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTROUTE|MSG_EOR|MSG_CONFIRM|MSG_NOSIGNAL|MSG_MORE|MSG_ZEROCOPY [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [] [pid 5640] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5641] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5641] setpgid(0, 0) = 0 [pid 5640] 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) = 3 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5642 attached [pid 5642] set_robust_list(0x55555f9106e0, 24) = 0 [pid 5641] write(3, "1000", 4 [pid 5642] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] <... write resumed>) = 4 [pid 5640] <... clone resumed>, child_tidptr=0x55555f9106d0) = 5642 [pid 5642] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] close(3 [pid 5642] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5641] <... close resumed>) = 0 [pid 5642] <... prctl resumed>) = 0 executing program [pid 5641] write(1, "executing program\n", 18) = 18 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5642] setpgid(0, 0 [pid 5641] <... socket resumed>) = 3 [pid 5642] <... setpgid resumed>) = 0 [pid 5642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5641] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388459, nlmsg_pid=635427838}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTROUTE|MSG_EOR|MSG_CONFIRM|MSG_NOSIGNAL|MSG_MORE|MSG_ZEROCOPY [pid 5642] <... openat resumed>) = 3 [pid 5642] write(3, "1000", 4) = 4 [pid 5642] close(3) = 0 [pid 5635] <... sendmsg resumed>) = 20 executing program [pid 5642] write(1, "executing program\n", 18) = 18 [pid 5635] socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP [pid 5642] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5635] <... socket resumed>) = 4 [pid 5642] <... socket resumed>) = 3 [pid 5635] ioctl(4, SIOCSIFFLAGS, {ifr_name="lo", ifr_flags=0} [pid 5642] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388459, nlmsg_pid=635427838}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTROUTE|MSG_EOR|MSG_CONFIRM|MSG_NOSIGNAL|MSG_MORE|MSG_ZEROCOPY [pid 5635] <... ioctl resumed>) = 0 [pid 5635] exit_group(0) = ? [pid 5635] +++ exited with 0 +++ [pid 5633] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5635, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5633] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [pid 5633] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5633] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5646 attached , child_tidptr=0x55555f9106d0) = 5646 [pid 5646] set_robust_list(0x55555f9106e0, 24) = 0 [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5646] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5646] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5646] setpgid(0, 0) = 0 [pid 5646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5646] write(3, "1000", 4) = 4 [pid 5646] close(3) = 0 executing program [pid 5646] write(1, "executing program\n", 18) = 18 [pid 5646] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 5646] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388459, nlmsg_pid=635427838}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_DONTROUTE|MSG_EOR|MSG_CONFIRM|MSG_NOSIGNAL|MSG_MORE|MSG_ZEROCOPY [pid 5636] kill(-5639, SIGKILL [pid 5634] kill(-5637, SIGKILL [pid 5636] <... kill resumed>) = 0 [pid 5636] kill(5639, SIGKILL) = 0 [pid 5634] <... kill resumed>) = 0 [pid 5634] kill(5637, SIGKILL) = 0 [pid 5638] kill(-5641, SIGKILL) = 0 [pid 5638] kill(5641, SIGKILL) = 0 [pid 5640] kill(-5642, SIGKILL) = 0 [pid 5640] kill(5642, SIGKILL) = 0 [pid 5633] kill(-5646, SIGKILL) = 0 [pid 5633] kill(5646, SIGKILL) = 0 [pid 5636] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5636] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5636] getdents64(3, 0x55555f9117a0 /* 2 entries */, 32768) = 48 [pid 5636] getdents64(3 [pid 5640] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5638] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5636] <... getdents64 resumed>, 0x55555f9117a0 /* 0 entries */, 32768) = 0 [pid 5640] <... openat resumed>) = 3 [pid 5636] close(3 [pid 5638] <... openat resumed>) = 3 [pid 5636] <... close resumed>) = 0 [pid 5640] fstat(3 [pid 5638] fstat(3 [pid 5640] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5638] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5640] getdents64(3 [pid 5634] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5640] <... getdents64 resumed>, 0x55555f9117a0 /* 2 entries */, 32768) = 48 [pid 5638] getdents64(3 [pid 5634] <... openat resumed>) = 3 [pid 5640] getdents64(3 [pid 5638] <... getdents64 resumed>, 0x55555f9117a0 /* 2 entries */, 32768) = 48 [pid 5640] <... getdents64 resumed>, 0x55555f9117a0 /* 0 entries */, 32768) = 0 [pid 5638] getdents64(3 [pid 5640] close(3 [pid 5634] fstat(3 [pid 5640] <... close resumed>) = 0 [pid 5634] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5638] <... getdents64 resumed>, 0x55555f9117a0 /* 0 entries */, 32768) = 0 [pid 5634] getdents64(3 [pid 5638] close(3 [pid 5634] <... getdents64 resumed>, 0x55555f9117a0 /* 2 entries */, 32768) = 48 [pid 5638] <... close resumed>) = 0 [pid 5634] getdents64(3, 0x55555f9117a0 /* 0 entries */, 32768) = 0 [pid 5634] close(3) = 0 [pid 5633] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5633] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5633] getdents64(3, 0x55555f9117a0 /* 2 entries */, 32768) = 48 [pid 5633] getdents64(3, 0x55555f9117a0 /* 0 entries */, 32768) = 0 [pid 5633] close(3) = 0 [ 286.473745][ T31] INFO: task syz-executor801:5639 blocked for more than 143 seconds. [ 286.481903][ T31] Not tainted syzkaller #0 [ 286.486909][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.495665][ T31] task:syz-executor801 state:D stack:27480 pid:5639 tgid:5639 ppid:5636 task_flags:0x400140 flags:0x00080002 [ 286.507723][ T31] Call Trace: [ 286.511034][ T31] [ 286.514030][ T31] __schedule+0x17d9/0x56c0 [ 286.518605][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.523617][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.528605][ T31] ? __pfx___schedule+0x10/0x10 [ 286.533538][ T31] ? schedule+0x90/0x2b0 [ 286.537840][ T31] schedule+0x164/0x2b0 [ 286.542009][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.547557][ T31] __mutex_lock+0x7bf/0x1550 [ 286.552189][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.557032][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 286.562976][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.568163][ T31] ? __asan_memset+0x22/0x50 [ 286.572807][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.578472][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 286.584336][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.590083][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.594922][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.599554][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.605790][ T31] ? __nla_parse+0x40/0x60 [ 286.610256][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 286.616668][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 286.623067][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 286.628711][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 286.634893][ T31] ? bpf_lsm_capable+0x9/0x20 [ 286.639618][ T31] ? security_capable+0x7e/0x2c0 [ 286.644657][ T31] genl_rcv_msg+0x614/0x7a0 [ 286.649227][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.654372][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.660582][ T31] netlink_rcv_skb+0x226/0x4a0 [ 286.665422][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.670492][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 286.675858][ T31] ? down_read+0x2be/0x330 [ 286.680330][ T31] genl_rcv+0x28/0x40 [ 286.684386][ T31] netlink_unicast+0x7bb/0x940 [ 286.689196][ T31] netlink_sendmsg+0x813/0xb40 [ 286.694075][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.699396][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.704497][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 286.709509][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.714866][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 286.719929][ T31] ____sys_sendmsg+0x54e/0x850 [ 286.724784][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 286.730105][ T31] ? import_iovec+0x73/0xa0 [ 286.734699][ T31] ___sys_sendmsg+0x2a5/0x360 [ 286.739416][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.744443][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 286.749679][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 286.755002][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 286.759971][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.765250][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 286.770764][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 286.776138][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.782242][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.788415][ T31] do_syscall_64+0x174/0x580 [ 286.793058][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.799208][ T31] ? clear_bhb_loop+0x70/0xc0 [ 286.803980][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.809882][ T31] RIP: 0033:0x7f72db99a639 [ 286.814370][ T31] RSP: 002b:00007ffd0ecda438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 286.822829][ T31] RAX: ffffffffffffffda RBX: 0000200000000680 RCX: 00007f72db99a639 [ 286.830889][ T31] RDX: 000000000400c884 RSI: 0000200000000640 RDI: 0000000000000003 [ 286.838946][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 286.847029][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0ecda5b8 [ 286.855060][ T31] R13: 0000000000000002 R14: 00007ffd0ecda460 R15: 00007ffd0ecda450 [ 286.863074][ T31] [ 286.866160][ T31] INFO: task syz-executor801:5641 blocked for more than 143 seconds. [ 286.874329][ T31] Not tainted syzkaller #0 [ 286.879267][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.887985][ T31] task:syz-executor801 state:D stack:27480 pid:5641 tgid:5641 ppid:5638 task_flags:0x400140 flags:0x00080002 [ 286.899970][ T31] Call Trace: [ 286.903273][ T31] [ 286.906309][ T31] __schedule+0x17d9/0x56c0 [ 286.910859][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.915894][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.920907][ T31] ? __pfx___schedule+0x10/0x10 [ 286.925859][ T31] ? schedule+0x90/0x2b0 [ 286.930138][ T31] schedule+0x164/0x2b0 [ 286.934370][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.939867][ T31] __mutex_lock+0x7bf/0x1550 [ 286.944528][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.949337][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 286.955341][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.960417][ T31] ? __asan_memset+0x22/0x50 [ 286.965074][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.970661][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 286.976456][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.982217][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.987058][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.991697][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.997924][ T31] ? __nla_parse+0x40/0x60 [ 287.002373][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 287.008779][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 287.015217][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 287.020801][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 287.026965][ T31] ? bpf_lsm_capable+0x9/0x20 [ 287.031683][ T31] ? security_capable+0x7e/0x2c0 [ 287.036722][ T31] genl_rcv_msg+0x614/0x7a0 [ 287.041287][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.046408][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.052621][ T31] netlink_rcv_skb+0x226/0x4a0 [ 287.057469][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.062550][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 287.067918][ T31] ? down_read+0x2be/0x330 [ 287.072371][ T31] genl_rcv+0x28/0x40 [ 287.076512][ T31] netlink_unicast+0x7bb/0x940 [ 287.081345][ T31] netlink_sendmsg+0x813/0xb40 [ 287.086191][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.091515][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 287.096603][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 287.101579][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.106932][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 287.112009][ T31] ____sys_sendmsg+0x54e/0x850 [ 287.116948][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 287.122290][ T31] ? import_iovec+0x73/0xa0 [ 287.126878][ T31] ___sys_sendmsg+0x2a5/0x360 [ 287.131602][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.136644][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 287.141879][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 287.147202][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 287.152188][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.157469][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 287.162972][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 287.168378][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.174513][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.180618][ T31] do_syscall_64+0x174/0x580 [ 287.185293][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.191434][ T31] ? clear_bhb_loop+0x70/0xc0 [ 287.196191][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.202123][ T31] RIP: 0033:0x7f72db99a639 [ 287.206595][ T31] RSP: 002b:00007ffd0ecda438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 287.215088][ T31] RAX: ffffffffffffffda RBX: 0000200000000680 RCX: 00007f72db99a639 [ 287.223073][ T31] RDX: 000000000400c884 RSI: 0000200000000640 RDI: 0000000000000003 [ 287.231101][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 287.239131][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0ecda5b8 [ 287.247186][ T31] R13: 0000000000000002 R14: 00007ffd0ecda460 R15: 00007ffd0ecda450 [ 287.255239][ T31] [ 287.258265][ T31] INFO: task syz-executor801:5642 blocked for more than 144 seconds. [ 287.266382][ T31] Not tainted syzkaller #0 [ 287.271357][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.280083][ T31] task:syz-executor801 state:D stack:27472 pid:5642 tgid:5642 ppid:5640 task_flags:0x400140 flags:0x00080002 [ 287.292099][ T31] Call Trace: [ 287.295450][ T31] [ 287.298422][ T31] __schedule+0x17d9/0x56c0 [ 287.302978][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.308031][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.313014][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 287.318332][ T31] ? irqentry_exit+0x218/0x8f0 [ 287.323125][ T31] ? trace_irq_disable+0x3b/0x140 [ 287.328249][ T31] ? __pfx___schedule+0x10/0x10 [ 287.333146][ T31] ? schedule+0x90/0x2b0 [ 287.337481][ T31] schedule+0x164/0x2b0 [ 287.341695][ T31] schedule_preempt_disabled+0x13/0x30 [ 287.347235][ T31] __mutex_lock+0x7bf/0x1550 [ 287.351879][ T31] ? __mutex_lock+0x5d4/0x1550 [ 287.356770][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.362722][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 287.367839][ T31] ? __asan_memset+0x22/0x50 [ 287.372462][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 287.378119][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.383965][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 287.389719][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.394554][ T31] ? trace_kmalloc+0x2a/0xf0 [ 287.399228][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.405466][ T31] ? __nla_parse+0x40/0x60 [ 287.409919][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 287.416312][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 287.422682][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 287.428314][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 287.434501][ T31] ? bpf_lsm_capable+0x9/0x20 [ 287.439214][ T31] ? security_capable+0x7e/0x2c0 [ 287.444231][ T31] genl_rcv_msg+0x614/0x7a0 [ 287.448785][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.453910][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.460116][ T31] netlink_rcv_skb+0x226/0x4a0 [ 287.464969][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.470035][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 287.475398][ T31] ? down_read+0x2be/0x330 [ 287.479855][ T31] genl_rcv+0x28/0x40 [ 287.483912][ T31] netlink_unicast+0x7bb/0x940 [ 287.488713][ T31] netlink_sendmsg+0x813/0xb40 [ 287.493566][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.498884][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 287.503978][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 287.508957][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.514313][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 287.519378][ T31] ____sys_sendmsg+0x54e/0x850 [ 287.524222][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 287.529545][ T31] ? import_iovec+0x73/0xa0 [ 287.534119][ T31] ___sys_sendmsg+0x2a5/0x360 [ 287.538833][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.543868][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 287.549105][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 287.554422][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 287.559392][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.564665][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 287.570160][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 287.575557][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.581665][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.587893][ T31] do_syscall_64+0x174/0x580 [ 287.592566][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.598689][ T31] ? clear_bhb_loop+0x70/0xc0 [ 287.603449][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.609372][ T31] RIP: 0033:0x7f72db99a639 [ 287.613860][ T31] RSP: 002b:00007ffd0ecda438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 287.622310][ T31] RAX: ffffffffffffffda RBX: 0000200000000680 RCX: 00007f72db99a639 [ 287.630345][ T31] RDX: 000000000400c884 RSI: 0000200000000640 RDI: 0000000000000003 [ 287.638393][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 287.646471][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0ecda5b8 [ 287.654527][ T31] R13: 0000000000000002 R14: 00007ffd0ecda460 R15: 00007ffd0ecda450 [ 287.662556][ T31] [ 287.665657][ T31] INFO: task syz-executor801:5646 blocked for more than 144 seconds. [ 287.673783][ T31] Not tainted syzkaller #0 [ 287.678720][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.687472][ T31] task:syz-executor801 state:D stack:27480 pid:5646 tgid:5646 ppid:5633 task_flags:0x400140 flags:0x00080002 [ 287.699487][ T31] Call Trace: [ 287.702776][ T31] [ 287.705789][ T31] __schedule+0x17d9/0x56c0 [ 287.710349][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.715373][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.720380][ T31] ? __pfx___schedule+0x10/0x10 [ 287.725342][ T31] ? schedule+0x90/0x2b0 [ 287.729621][ T31] schedule+0x164/0x2b0 [ 287.733879][ T31] schedule_preempt_disabled+0x13/0x30 [ 287.739379][ T31] __mutex_lock+0x7bf/0x1550 [ 287.744051][ T31] ? __mutex_lock+0x5d4/0x1550 [ 287.748876][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.754841][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 287.759904][ T31] ? __asan_memset+0x22/0x50 [ 287.764563][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 287.770156][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.775961][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 287.781728][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.786583][ T31] ? trace_kmalloc+0x2a/0xf0 [ 287.791214][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.797487][ T31] ? __nla_parse+0x40/0x60 [ 287.801943][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 287.808366][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 287.814805][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 287.820384][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 287.826585][ T31] ? bpf_lsm_capable+0x9/0x20 [ 287.831306][ T31] ? security_capable+0x7e/0x2c0 [ 287.836333][ T31] genl_rcv_msg+0x614/0x7a0 [ 287.840896][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.846033][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.852244][ T31] netlink_rcv_skb+0x226/0x4a0 [ 287.857108][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.862224][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 287.867622][ T31] ? down_read+0x2be/0x330 [ 287.872096][ T31] genl_rcv+0x28/0x40 [ 287.876193][ T31] netlink_unicast+0x7bb/0x940 [ 287.880999][ T31] netlink_sendmsg+0x813/0xb40 [ 287.885848][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.891173][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 287.896288][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 287.901270][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.906643][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 287.911713][ T31] ____sys_sendmsg+0x54e/0x850 [ 287.916577][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 287.921903][ T31] ? import_iovec+0x73/0xa0 [ 287.926487][ T31] ___sys_sendmsg+0x2a5/0x360 [ 287.931200][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.936251][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 287.941511][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 287.946861][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 287.951853][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.957164][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 287.962721][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 287.968114][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.974291][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.980665][ T31] do_syscall_64+0x174/0x580 [ 287.985373][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.991476][ T31] ? clear_bhb_loop+0x70/0xc0 [ 287.996250][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 288.002179][ T31] RIP: 0033:0x7f72db99a639 [ 288.006676][ T31] RSP: 002b:00007ffd0ecda438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 288.015201][ T31] RAX: ffffffffffffffda RBX: 0000200000000680 RCX: 00007f72db99a639 [ 288.023182][ T31] RDX: 000000000400c884 RSI: 0000200000000640 RDI: 0000000000000003 [ 288.031226][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 288.039298][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000001bea5 [ 288.047377][ T31] R13: 00007ffd0ecda44c R14: 00007ffd0ecda460 R15: 00007ffd0ecda450 [ 288.055474][ T31] [ 288.058522][ T31] [ 288.058522][ T31] Showing all locks held in the system: [ 288.066362][ T31] 1 lock held by khungtaskd/31: [ 288.071237][ T31] #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 288.081204][ T31] 1 lock held by klogd/4961: [ 288.085852][ T31] #0: ffff8880b863b360 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 [ 288.095956][ T31] 2 locks held by getty/5358: [ 288.100695][ T31] #0: ffff8880361d60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 288.110549][ T31] #1: ffffc9000322b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 [ 288.120763][ T31] 2 locks held by syz-executor801/5637: [ 288.126384][ T31] #0: ffffffff900987a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.134677][ T31] #1: ffffffff8ee8db80 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.144972][ T31] 2 locks held by syz-executor801/5639: [ 288.150527][ T31] #0: ffffffff900987a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.158805][ T31] #1: ffffffff8ee8db80 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.169065][ T31] 2 locks held by syz-executor801/5641: [ 288.174717][ T31] #0: ffffffff900987a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.182998][ T31] #1: ffffffff8ee8db80 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.193274][ T31] 2 locks held by syz-executor801/5642: [ 288.198887][ T31] #0: ffffffff900987a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.207194][ T31] #1: ffffffff8ee8db80 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.217509][ T31] 2 locks held by syz-executor801/5646: [ 288.223057][ T31] #0: ffffffff900987a8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.231352][ T31] #1: ffffffff8ee8db80 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.241634][ T31] [ 288.244019][ T31] ============================================= [ 288.244019][ T31] [ 288.252467][ T31] NMI backtrace for cpu 1 [ 288.252496][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 288.252517][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.252528][ T31] Call Trace: [ 288.252535][ T31] [ 288.252543][ T31] dump_stack_lvl+0xe8/0x150 [ 288.252573][ T31] nmi_cpu_backtrace+0x274/0x2d0 [ 288.252600][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 288.252632][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x380 [ 288.252661][ T31] sys_info+0x135/0x170 [ 288.252683][ T31] watchdog+0xfd7/0x1030 [ 288.252713][ T31] ? watchdog+0x1c7/0x1030 [ 288.252740][ T31] kthread+0x388/0x470 [ 288.252769][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.252790][ T31] ? __pfx_kthread+0x10/0x10 [ 288.252819][ T31] ret_from_fork+0x514/0xb70 [ 288.252851][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.252879][ T31] ? __switch_to+0xc89/0x1420 [ 288.252906][ T31] ? __pfx_kthread+0x10/0x10 [ 288.252935][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.252982][ T31] [ 288.252990][ T31] Sending NMI from CPU 1 to CPUs 0: [ 288.362613][ C0] NMI backtrace for cpu 0 [ 288.362638][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 288.362657][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.362667][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 288.362698][ C0] Code: 6b 7e 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 73 2e 18 00 fb f4 4c 06 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 288.362712][ C0] RSP: 0018:ffffffff8e807de0 EFLAGS: 00000246 [ 288.362727][ C0] RAX: 00000000000d10c9 RBX: ffffffff819b433c RCX: 0000000080000001 [ 288.362739][ C0] RDX: 0000000000000001 RSI: ffffffff8e22c389 RDI: ffffffff8c4bba80 [ 288.362750][ C0] RBP: ffffffff8e807eb8 R08: ffff8880b86338db R09: 1ffff110170c671b [ 288.362763][ C0] R10: dffffc0000000000 R11: ffffed10170c671c R12: 0000000000000000 [ 288.362775][ C0] R13: 1ffffffff1d11de8 R14: 1ffffffff1d00fc4 R15: dffffc0000000000 [ 288.362787][ C0] FS: 0000000000000000(0000) GS:ffff888124f58000(0000) knlGS:0000000000000000 [ 288.362801][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 288.362812][ C0] CR2: 000055f910aa9660 CR3: 000000000e946000 CR4: 00000000003526f0 [ 288.362828][ C0] Call Trace: [ 288.362837][ C0] [ 288.362843][ C0] default_idle+0x9/0x20 [ 288.362859][ C0] default_idle_call+0x72/0xb0 [ 288.362877][ C0] do_idle+0x1cc/0x540 [ 288.362900][ C0] ? __pfx_do_idle+0x10/0x10 [ 288.362923][ C0] ? do_idle+0x5/0x540 [ 288.362943][ C0] cpu_startup_entry+0x43/0x60 [ 288.362963][ C0] rest_init+0x2de/0x300 [ 288.362982][ C0] start_kernel+0x392/0x3e0 [ 288.363023][ C0] x86_64_start_reservations+0x24/0x30 [ 288.363044][ C0] x86_64_start_kernel+0x137/0x1b0 [ 288.363065][ C0] common_startup_64+0x13e/0x157 [ 288.363091][ C0] [ 288.363626][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 288.363677][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 288.363739][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.363770][ T31] Call Trace: [ 288.363791][ T31] [ 288.363813][ T31] vpanic+0x56c/0xa60 [ 288.363906][ T31] ? __pfx_vpanic+0x10/0x10 [ 288.363979][ T31] ? __down_trylock_console_sem+0x6b/0x110 [ 288.364064][ T31] panic+0xc5/0xd0 [ 288.364136][ T31] ? __pfx_panic+0x10/0x10 [ 288.364220][ T31] ? wq_watchdog_touch+0xf9/0x160 [ 288.364310][ T31] ? nmi_trigger_cpumask_backtrace+0x247/0x380 [ 288.364385][ T31] watchdog+0x1030/0x1030 [ 288.364469][ T31] ? watchdog+0x1c7/0x1030 [ 288.364557][ T31] kthread+0x388/0x470 [ 288.364624][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.364698][ T31] ? __pfx_kthread+0x10/0x10 [ 288.364789][ T31] ret_from_fork+0x514/0xb70 [ 288.364873][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.364945][ T31] ? __switch_to+0xc89/0x1420 [ 288.365016][ T31] ? __pfx_kthread+0x10/0x10 [ 288.365089][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.365214][ T31] [ 288.656538][ T31] Kernel Offset: disabled [ 288.660872][ T31] Rebooting in 86400 seconds..