ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor676869042

<...>


syzkaller
syzkaller login: [   22.060675][   T24] kauditd_printk_skb: 31 callbacks suppressed
[   22.060689][   T24] audit: type=1400 audit(1788905504.300:59): avc:  denied  { transition } for  pid=259 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.073185][   T24] audit: type=1400 audit(1788905504.300:60): avc:  denied  { noatsecure } for  pid=259 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.083537][   T24] audit: type=1400 audit(1788905504.310:61): avc:  denied  { write } for  pid=259 comm="sh" path="pipe:[14387]" dev="pipefs" ino=14387 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   22.105857][   T24] audit: type=1400 audit(1788905504.310:62): avc:  denied  { rlimitinh } for  pid=259 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.125540][   T24] audit: type=1400 audit(1788905504.310:63): avc:  denied  { siginh } for  pid=259 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.0.76' (ED25519) to the list of known hosts.
execve("ci2-android-5-10/syz-executor676869042", ["ci2-android-5-10/syz-executor676869042"], 0x7ffc8f8d0f80 /* 10 vars */) = 0
brk(NULL)                               = 0x555586eb0000
brk(0x555586eb0d40)                     = 0x555586eb0d40
arch_prctl(ARCH_SET_FS, 0x555586eb03c0) = 0
set_tid_address(0x555586eb0690)         = 297
set_robust_list(0x555586eb06a0, 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}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-5-10/syz-executor676869042", 4096) = 44
getrandom("\x24\xd6\x22\x80\x64\x34\xc2\x8b", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555586eb0d40
brk(0x555586ed1d40)                     = 0x555586ed1d40
brk(0x555586ed2000)                     = 0x555586ed2000
mprotect(0x7f0935d69000, 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
getrandom("\xd3\x85\x60\x07\xd5\x0e\xfe\x8a", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.PPtcu6", 0700)       = 0
chmod("./syzkaller.PPtcu6", 0777)       = 0
chdir("./syzkaller.PPtcu6")             = 0
unshare(CLONE_NEWPID)                   = 0
rt_sigprocmask(SIG_BLOCK, ~[], [], 8)   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555586eb0690) = 298
ci2-android-5-10/strace-static-x86_64: Process 298 attached
[pid   297] rt_sigprocmask(SIG_SETMASK, [] <unfinished ...>
[pid   298] set_robust_list(0x555586eb06a0, 24 <unfinished ...>
[pid   297] <... rt_sigprocmask resumed>, NULL, 8) = 0
[pid   298] <... set_robust_list resumed>) = 0
[pid   298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   298] getppid()                   = 0
[pid   298] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   298] unshare(CLONE_NEWNS)        = 0
[pid   298] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   298] unshare(CLONE_NEWCGROUP)    = 0
[pid   298] unshare(CLONE_NEWUTS)       = 0
[pid   298] unshare(CLONE_SYSVSEM)      = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] getpid()                    = 1
[pid   298] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid   298] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid   298] unshare(CLONE_NEWNET)       = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "0 65535", 7)      = 7
[pid   298] close(3)                    = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "100000", 6)       = 6
[pid   298] close(3)                    = 0
[pid   298] mkdir("./syz-tmp", 0777)    = 0
[   32.304742][   T24] audit: type=1400 audit(1788905514.550:64): avc:  denied  { execmem } for  pid=297 comm="syz-executor676" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   32.327680][   T24] audit: type=1400 audit(1788905514.570:65): avc:  denied  { mounton } for  pid=298 comm="syz-executor676" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   298] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   298] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[   32.362245][   T24] audit: type=1400 audit(1788905514.600:66): avc:  denied  { mounton } for  pid=298 comm="syz-executor676" path="/root/syzkaller.PPtcu6/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   32.387198][   T24] audit: type=1400 audit(1788905514.600:67): avc:  denied  { mount } for  pid=298 comm="syz-executor676" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   298] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   298] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   298] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   298] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   298] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   298] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   298] mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, MS_RDONLY|MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   298] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   298] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   298] chdir("/")                  = 0
[pid   298] umount2("./pivot", MNT_DETACH) = 0
[pid   298] chroot("./newroot")         = 0
[pid   298] chdir("/")                  = 0
[pid   298] mkdir("/dev/gadgetfs", 0777) = 0
[   32.410883][   T24] audit: type=1400 audit(1788905514.650:68): avc:  denied  { mounton } for  pid=298 comm="syz-executor676" path="/root/syzkaller.PPtcu6/syz-tmp/newroot/dev" dev="tmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   32.436623][   T24] audit: type=1400 audit(1788905514.650:69): avc:  denied  { mount } for  pid=298 comm="syz-executor676" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[pid   298] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   298] mkdir("/dev/binderfs", 0777) = 0
[pid   298] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   298] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   298] mkdir("./0", 0777)          = 0
[pid   298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   298] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555586eb0690) = 2
[pid   298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-10/strace-static-x86_64: Process 299 attached
[pid   299] set_robust_list(0x555586eb06a0, 24) = 0
[pid   299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   299] chdir("./0")                = 0
[pid   299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   299] setpgid(0, 0)               = 0
[pid   299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   299] write(3, "1000", 4)         = 4
[pid   299] close(3)                    = 0
[pid   299] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid   299] write(1, "executing program\n", 18) = 18
[pid   299] mkdir("./bus", 000)         = 0
[   32.445149][  T298] request_module fs-gadgetfs succeeded, but still no fs?
[   32.459077][   T24] audit: type=1400 audit(1788905514.650:70): avc:  denied  { mounton } for  pid=298 comm="syz-executor676" path="/root/syzkaller.PPtcu6/syz-tmp/newroot/sys/kernel/debug" dev="debugfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:debugfs_t tclass=dir permissive=1
[pid   299] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_I_VERSION|MS_STRICTATIME, NULL) = 0
[pid   299] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   299] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   299] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   299] exit_group(0)               = ?
[pid   299] +++ exited with 0 +++
[pid   298] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
[pid   298] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   298] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   298] getdents64(3, 0x555586eb1750 /* 6 entries */, 32768) = 168
[pid   298] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   298] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   298] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   298] getdents64(4, 0x555586eb9790 /* 2 entries */, 32768) = 48
[pid   298] getdents64(4, 0x555586eb9790 /* 0 entries */, 32768) = 0
[pid   298] close(4)                    = 0
[pid   298] rmdir("./0/.incomplete")    = 0
[pid   298] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   298] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   298] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   298] getdents64(4, 0x555586eb9790 /* 2 entries */, 32768) = 48
[pid   298] getdents64(4, 0x555586eb9790 /* 0 entries */, 32768) = 0
[pid   298] close(4)                    = 0
[pid   298] rmdir("./0/.index")         = 0
[   32.492626][   T24] audit: type=1400 audit(1788905514.650:71): avc:  denied  { mounton } for  pid=298 comm="syz-executor676" path="/root/syzkaller.PPtcu6/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14554 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   32.502174][  T299] incfs: ino conflict with backing FS 9
[   32.521006][   T24] audit: type=1400 audit(1788905514.650:72): avc:  denied  { unmount } for  pid=298 comm="syz-executor676" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   32.546137][   T24] audit: type=1400 audit(1788905514.680:73): avc:  denied  { mounton } for  pid=298 comm="syz-executor676" path="/dev/gadgetfs" dev="devtmpfs" ino=517 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   32.569414][  T298] ------------[ cut here ]------------
[   32.574962][  T298] WARNING: CPU: 0 PID: 298 at fs/inode.c:304 drop_nlink+0xc5/0x110
[   32.582856][  T298] Modules linked in:
[   32.587216][  T298] CPU: 0 PID: 298 Comm: syz-executor676 Not tainted syzkaller #0
[   32.594976][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   32.605264][  T298] RIP: 0010:drop_nlink+0xc5/0x110
[   32.610723][  T298] Code: 1b 48 8d bb b8 04 00 00 be 08 00 00 00 e8 53 f7 f1 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 6b 74 b7 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   32.630662][  T298] RSP: 0018:ffffc90000b67c10 EFLAGS: 00010293
[   32.636870][  T298] RAX: ffffffff81ad4045 RBX: ffff88810bafc7a0 RCX: ffff88810bbd2800
[   32.645074][  T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   32.653433][  T298] RBP: ffffc90000b67c38 R08: 0000000000000003 R09: 0000000000000004
[   32.662497][  T298] R10: dffffc0000000000 R11: fffff5200016cf70 R12: dffffc0000000000
[   32.670905][  T298] R13: 1ffff1102175f8fd R14: ffff88810bafc7e8 R15: 0000000000000000
[   32.679617][  T298] FS:  0000555586eb03c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   32.689163][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.695933][  T298] CR2: 000055fe8f52f308 CR3: 000000010abf4000 CR4: 00000000003506b0
[   32.704223][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.712344][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.720494][  T298] Call Trace:
[   32.723827][  T298]  shmem_rmdir+0x5b/0x90
[   32.728310][  T298]  vfs_rmdir+0x1ab/0x3c0
[   32.732673][  T298]  incfs_kill_sb+0xf7/0x200
[   32.737435][  T298]  deactivate_locked_super+0xa0/0x100
[   32.743005][  T298]  deactivate_super+0xaf/0xe0
[   32.747858][  T298]  cleanup_mnt+0x44f/0x500
[   32.752310][  T298]  __cleanup_mnt+0x19/0x20
[   32.756906][  T298]  task_work_run+0x127/0x190
[   32.761749][  T298]  ptrace_notify+0x230/0x270
[   32.766416][  T298]  ? do_notify_parent+0x810/0x810
[   32.771675][  T298]  ? user_path_at_empty+0x43/0x50
[   32.776866][  T298]  ? __x64_sys_umount+0x12d/0x170
[   32.781977][  T298]  ? path_umount+0xfa0/0xfa0
[   32.786726][  T298]  syscall_exit_work+0x6e/0x140
[   32.791773][  T298]  syscall_exit_to_user_mode+0x2f/0x40
[   32.797712][  T298]  do_syscall_64+0x3d/0x40
[   32.802173][  T298]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   32.808150][  T298] RIP: 0033:0x7f0935cd6527
[   32.812588][  T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   32.834010][  T298] RSP: 002b:00007ffd8edd3d48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   32.842978][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0935cd6527
[   32.851512][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd8edd3e00
[   32.860058][  T298] RBP: 00007ffd8edd3e00 R08: 00007ffd8edd4e00 R09: 00000000ffffffff
[   32.868355][  T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd8edd4e70
[   32.876697][  T298] R13: 0000555586eb1720 R14: 00007ffd8edd4e70 R15: 0000000000000001
[   32.885015][  T298] ---[ end trace 34302904c8915d41 ]---
[   32.890731][  T298] ==================================================================
[   32.899467][  T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   32.906547][  T298] Write of size 4 at addr 0000000000000170 by task syz-executor676/298
[   32.915501][  T298] 
[   32.918107][  T298] CPU: 0 PID: 298 Comm: syz-executor676 Tainted: G        W         syzkaller #0
[   32.927399][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   32.937823][  T298] Call Trace:
[   32.941417][  T298]  __dump_stack+0x21/0x24
[   32.946124][  T298]  dump_stack_lvl+0x1a7/0x208
[   32.951480][  T298]  ? thaw_kernel_threads+0x220/0x220
[   32.956790][  T298]  ? show_regs_print_info+0x18/0x18
[   32.962460][  T298]  ? _raw_spin_lock+0x94/0xf0
[   32.967164][  T298]  ? _raw_spin_trylock_bh+0x150/0x150
[   32.972626][  T298]  ? ihold+0x20/0x60
[   32.976523][  T298]  kasan_report+0xbd/0x140
[   32.980946][  T298]  ? ihold+0x20/0x60
[   32.984928][  T298]  kasan_check_range+0x249/0x2a0
[   32.989880][  T298]  __kasan_check_write+0x14/0x20
[   32.994856][  T298]  ihold+0x20/0x60
[   32.998576][  T298]  vfs_rmdir+0x2d5/0x3c0
[   33.002819][  T298]  incfs_kill_sb+0xf7/0x200
[   33.007626][  T298]  deactivate_locked_super+0xa0/0x100
[   33.013137][  T298]  deactivate_super+0xaf/0xe0
[   33.017833][  T298]  cleanup_mnt+0x44f/0x500
[   33.022449][  T298]  __cleanup_mnt+0x19/0x20
[   33.026893][  T298]  task_work_run+0x127/0x190
[   33.031730][  T298]  ptrace_notify+0x230/0x270
[   33.036463][  T298]  ? do_notify_parent+0x810/0x810
[   33.042125][  T298]  ? user_path_at_empty+0x43/0x50
[   33.047156][  T298]  ? __x64_sys_umount+0x12d/0x170
[   33.052212][  T298]  ? path_umount+0xfa0/0xfa0
[   33.056812][  T298]  syscall_exit_work+0x6e/0x140
[   33.062093][  T298]  syscall_exit_to_user_mode+0x2f/0x40
[   33.067869][  T298]  do_syscall_64+0x3d/0x40
[   33.072396][  T298]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   33.078303][  T298] RIP: 0033:0x7f0935cd6527
[   33.082726][  T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   33.102531][  T298] RSP: 002b:00007ffd8edd3d48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   33.111036][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0935cd6527
[   33.119302][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd8edd3e00
[   33.127629][  T298] RBP: 00007ffd8edd3e00 R08: 00007ffd8edd4e00 R09: 00000000ffffffff
[   33.135605][  T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd8edd4e70
[   33.143613][  T298] R13: 0000555586eb1720 R14: 00007ffd8edd4e70 R15: 0000000000000001
[   33.151882][  T298] ==================================================================
[   33.159975][  T298] Disabling lock debugging due to kernel taint
[   33.166479][  T298] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   33.174328][  T298] #PF: supervisor write access in kernel mode
[   33.180420][  T298] #PF: error_code(0x0002) - not-present page
[   33.186414][  T298] PGD 0 P4D 0 
[   33.189828][  T298] Oops: 0002 [#1] PREEMPT SMP KASAN
[   33.195250][  T298] CPU: 0 PID: 298 Comm: syz-executor676 Tainted: G    B   W         syzkaller #0
[   33.204357][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   33.214451][  T298] RIP: 0010:ihold+0x26/0x60
[   33.219056][  T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 81 6c b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 40 ef f1 ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 70 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 01
[   33.239117][  T298] RSP: 0018:ffffc90000b67c50 EFLAGS: 00010246
[   33.245302][  T298] RAX: ffff88810bbd2800 RBX: 0000000000000000 RCX: ffff88810bbd2800
[   33.253289][  T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   33.261398][  T298] RBP: ffffc90000b67c60 R08: 0000000000000003 R09: 0000000000000004
[   33.269492][  T298] R10: dffffc0000000000 R11: fffffbfff0dcf848 R12: dffffc0000000000
[   33.277471][  T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   33.285719][  T298] FS:  0000555586eb03c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   33.294754][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.301494][  T298] CR2: 0000000000000170 CR3: 000000010abf4000 CR4: 00000000003506b0
[   33.309492][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.317856][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.326032][  T298] Call Trace:
[   33.329453][  T298]  vfs_rmdir+0x2d5/0x3c0
[   33.333742][  T298]  incfs_kill_sb+0xf7/0x200
[   33.338278][  T298]  deactivate_locked_super+0xa0/0x100
[   33.343845][  T298]  deactivate_super+0xaf/0xe0
[   33.348963][  T298]  cleanup_mnt+0x44f/0x500
[   33.353410][  T298]  __cleanup_mnt+0x19/0x20
[   33.358409][  T298]  task_work_run+0x127/0x190
[   33.363211][  T298]  ptrace_notify+0x230/0x270
[   33.367835][  T298]  ? do_notify_parent+0x810/0x810
[   33.372885][  T298]  ? user_path_at_empty+0x43/0x50
[   33.377925][  T298]  ? __x64_sys_umount+0x12d/0x170
[   33.383059][  T298]  ? path_umount+0xfa0/0xfa0
[   33.387682][  T298]  syscall_exit_work+0x6e/0x140
[   33.392731][  T298]  syscall_exit_to_user_mode+0x2f/0x40
[   33.398228][  T298]  do_syscall_64+0x3d/0x40
[   33.402670][  T298]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   33.408582][  T298] RIP: 0033:0x7f0935cd6527
[   33.413014][  T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   33.432727][  T298] RSP: 002b:00007ffd8edd3d48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   33.442029][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0935cd6527
[   33.450016][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd8edd3e00
[   33.458087][  T298] RBP: 00007ffd8edd3e00 R08: 00007ffd8edd4e00 R09: 00000000ffffffff
[   33.466084][  T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd8edd4e70
[   33.474150][  T298] R13: 0000555586eb1720 R14: 00007ffd8edd4e70 R15: 0000000000000001
[   33.482149][  T298] Modules linked in:
[   33.486077][  T298] CR2: 0000000000000170
[   33.490249][  T298] ---[ end trace 34302904c8915d42 ]---
[   33.495736][  T298] RIP: 0010:ihold+0x26/0x60
[   33.500264][  T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 81 6c b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 40 ef f1 ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 70 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 01
[   33.520152][  T298] RSP: 0018:ffffc90000b67c50 EFLAGS: 00010246
[   33.526235][  T298] RAX: ffff88810bbd2800 RBX: 0000000000000000 RCX: ffff88810bbd2800
[   33.534398][  T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   33.542403][  T298] RBP: ffffc90000b67c60 R08: 0000000000000003 R09: 0000000000000004
[   33.550393][  T298] R10: dffffc0000000000 R11: fffffbfff0dcf848 R12: dffffc0000000000
[   33.558472][  T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   33.566802][  T298] FS:  0000555586eb03c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   33.576030][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.582803][  T298] CR2: 0000000000000170 CR3: 000000010abf4000 CR4: 00000000003506b0
[   33.590985][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.598977][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.607239][  T298] Kernel panic - not syncing: Fatal exception
[   33.613885][  T298] Kernel Offset: disabled
[   33.619316][  T298] Rebooting in 86400 seconds..