./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1992510232

<...>
[   12.594908][   T30] audit: type=1400 audit(1737956881.245:63): avc:  denied  { write } for  pid=223 comm="sh" path="pipe:[14583]" dev="pipefs" ino=14583 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   12.599350][   T30] audit: type=1400 audit(1737956881.245:64): avc:  denied  { rlimitinh } for  pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   12.604051][   T30] audit: type=1400 audit(1737956881.245:65): avc:  denied  { siginh } for  pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.0.192' (ED25519) to the list of known hosts.
execve("./syz-executor1992510232", ["./syz-executor1992510232"], 0x7fff6ee93be0 /* 10 vars */) = 0
brk(NULL)                               = 0x55557c315000
brk(0x55557c315d00)                     = 0x55557c315d00
arch_prctl(ARCH_SET_FS, 0x55557c315380) = 0
set_tid_address(0x55557c315650)         = 293
set_robust_list(0x55557c315660, 24)     = 0
rseq(0x55557c315ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1992510232", 4096) = 28
getrandom("\xd2\x97\xc3\x4c\xf2\x18\x71\xcc", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55557c315d00
brk(0x55557c336d00)                     = 0x55557c336d00
brk(0x55557c337000)                     = 0x55557c337000
mprotect(0x7f35a5bab000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
mkdir("./syzkaller.wOQRxv", 0700)       = 0
chmod("./syzkaller.wOQRxv", 0777)       = 0
chdir("./syzkaller.wOQRxv")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c315650) = 294
./strace-static-x86_64: Process 294 attached
[pid   294] set_robust_list(0x55557c315660, 24) = 0
[pid   294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   294] getppid()                   = 0
[pid   294] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   294] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   294] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   294] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   294] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   294] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   294] unshare(CLONE_NEWNS)        = 0
[pid   294] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   294] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   294] unshare(CLONE_NEWCGROUP)    = 0
[pid   294] unshare(CLONE_NEWUTS)       = 0
[pid   294] unshare(CLONE_SYSVSEM)      = 0
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   294] getpid()                    = 1
[pid   294] 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   294] 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   294] unshare(CLONE_NEWNET)       = 0
[pid   294] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   294] write(3, "0 65535", 7)      = 7
[pid   294] close(3)                    = 0
[pid   294] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   294] write(3, "100000", 6)       = 6
[pid   294] close(3)                    = 0
[pid   294] mkdir("./syz-tmp", 0777)    = 0
[pid   294] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   294] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   294] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   294] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   294] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   294] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   294] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   294] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   294] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   294] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   294] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   294] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   294] 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)
[   21.655879][   T30] audit: type=1400 audit(1737956890.315:66): avc:  denied  { execmem } for  pid=293 comm="syz-executor199" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   21.662821][   T30] audit: type=1400 audit(1737956890.325:67): avc:  denied  { mounton } for  pid=294 comm="syz-executor199" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   294] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   294] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   294] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   294] chdir("/")                  = 0
[pid   294] umount2("./pivot", MNT_DETACH) = 0
[pid   294] chroot("./newroot")         = 0
[pid   294] chdir("/")                  = 0
[pid   294] mkdir("/dev/gadgetfs", 0777) = 0
[pid   294] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   294] mkdir("/dev/binderfs", 0777) = 0
[pid   294] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   294] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   294] mkdir("./0", 0777)          = 0
[pid   294] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c315650) = 2
./strace-static-x86_64: Process 295 attached
[pid   295] set_robust_list(0x55557c315660, 24) = 0
[pid   295] chdir("./0")                = 0
[pid   295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   295] setpgid(0, 0)               = 0
[pid   295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   295] write(3, "1000", 4executing program
)         = 4
[pid   295] close(3)                    = 0
[pid   295] symlink("/dev/binderfs", "./binderfs") = 0
[pid   295] write(1, "executing program\n", 18) = 18
[pid   295] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   295] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[   21.688461][   T30] audit: type=1400 audit(1737956890.355:68): avc:  denied  { mounton } for  pid=294 comm="syz-executor199" path="/root/syzkaller.wOQRxv/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   21.713096][   T30] audit: type=1400 audit(1737956890.355:69): avc:  denied  { mount } for  pid=294 comm="syz-executor199" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   21.715158][  T294] request_module fs-gadgetfs succeeded, but still no fs?
[pid   295] mount("./file0", "./file0", "incremental-fs", MS_RDONLY, NULL) = 0
[pid   295] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   295] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   295] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   295] exit_group(0)               = ?
[pid   295] +++ exited with 0 +++
[pid   294] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   294] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   294] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   294] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   294] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   294] getdents64(3, 0x55557c3166f0 /* 6 entries */, 32768) = 176
[pid   294] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   294] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   294] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   294] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   294] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   294] getdents64(4, 0x55557c31e730 /* 2 entries */, 32768) = 48
[pid   294] getdents64(4, 0x55557c31e730 /* 0 entries */, 32768) = 0
[pid   294] close(4)                    = 0
[pid   294] rmdir("./0/.incomplete")    = 0
[pid   294] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   294] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   294] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   294] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   294] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   294] getdents64(4, 0x55557c31e730 /* 2 entries */, 32768) = 48
[pid   294] getdents64(4, 0x55557c31e730 /* 0 entries */, 32768) = 0
[pid   294] close(4)                    = 0
[pid   294] rmdir("./0/.index")         = 0
[   21.735540][   T30] audit: type=1400 audit(1737956890.365:70): avc:  denied  { mounton } for  pid=294 comm="syz-executor199" path="/root/syzkaller.wOQRxv/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
[   21.751043][  T295] incfs: ino conflict with backing FS 8
[   21.767619][   T30] audit: type=1400 audit(1737956890.365:71): avc:  denied  { mount } for  pid=294 comm="syz-executor199" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   21.794297][  T294] ------------[ cut here ]------------
[   21.794728][   T30] audit: type=1400 audit(1737956890.365:72): avc:  denied  { mounton } for  pid=294 comm="syz-executor199" path="/root/syzkaller.wOQRxv/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
[   21.799863][  T294] WARNING: CPU: 0 PID: 294 at fs/inode.c:307 drop_nlink+0xc1/0x110
[   21.826243][   T30] audit: type=1400 audit(1737956890.365:73): avc:  denied  { mounton } for  pid=294 comm="syz-executor199" path="/root/syzkaller.wOQRxv/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14057 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   21.834744][  T294] Modules linked in:
[   21.861718][   T30] audit: type=1400 audit(1737956890.365:74): avc:  denied  { unmount } for  pid=294 comm="syz-executor199" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   21.864848][  T294] CPU: 0 PID: 294 Comm: syz-executor199 Not tainted 5.15.176-syzkaller-00972-g829d9f138569 #0
[   21.884341][   T30] audit: type=1400 audit(1737956890.375:75): avc:  denied  { mounton } for  pid=294 comm="syz-executor199" path="/dev/gadgetfs" dev="devtmpfs" ino=514 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   21.894614][  T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   21.927286][  T294] RIP: 0010:drop_nlink+0xc1/0x110
[   21.932131][  T294] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 97 f4 f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 6f 8d ae ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   21.951638][  T294] RSP: 0018:ffffc900009c7bc8 EFLAGS: 00010293
[   21.957507][  T294] RAX: ffffffff81c1def1 RBX: 0000000000000000 RCX: ffff88810c77bb40
[   21.965287][  T294] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   21.973158][  T294] RBP: ffffc900009c7bf0 R08: ffffffff81c1de74 R09: 0000000000000003
[   21.981045][  T294] R10: fffff52000138f68 R11: dffffc0000000001 R12: dffffc0000000000
[   21.988901][  T294] R13: 1ffff110245f9655 R14: ffff888122fcb260 R15: ffff888122fcb2a8
[   21.996642][  T294] FS:  000055557c315380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   22.005425][  T294] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.011829][  T294] CR2: 0000557fefd9f368 CR3: 000000011db02000 CR4: 00000000003506a0
[   22.019655][  T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.027448][  T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.035243][  T294] Call Trace:
[   22.038385][  T294]  <TASK>
[   22.041143][  T294]  ? show_regs+0x58/0x60
[   22.045219][  T294]  ? __warn+0x160/0x2f0
[   22.049239][  T294]  ? drop_nlink+0xc1/0x110
[   22.053468][  T294]  ? report_bug+0x3d9/0x5b0
[   22.057833][  T294]  ? drop_nlink+0xc1/0x110
[   22.062071][  T294]  ? handle_bug+0x41/0x70
[   22.066232][  T294]  ? exc_invalid_op+0x1b/0x50
[   22.070766][  T294]  ? asm_exc_invalid_op+0x1b/0x20
[   22.075601][  T294]  ? drop_nlink+0x44/0x110
[   22.079892][  T294]  ? drop_nlink+0xc1/0x110
[   22.084107][  T294]  ? drop_nlink+0xc1/0x110
[   22.088381][  T294]  ? drop_nlink+0xc1/0x110
[   22.092611][  T294]  shmem_rmdir+0x59/0x90
[   22.096687][  T294]  vfs_rmdir+0x324/0x470
[   22.100791][  T294]  incfs_kill_sb+0x113/0x230
[   22.105196][  T294]  deactivate_locked_super+0xad/0x110
[   22.110458][  T294]  deactivate_super+0xbe/0xf0
[   22.114916][  T294]  cleanup_mnt+0x45c/0x510
[   22.119196][  T294]  __cleanup_mnt+0x19/0x20
[   22.123419][  T294]  task_work_run+0x129/0x190
[   22.127888][  T294]  ptrace_notify+0x29e/0x350
[   22.132274][  T294]  ? do_notify_parent+0xa30/0xa30
[   22.137170][  T294]  ? user_path_at_empty+0x14e/0x1a0
[   22.142342][  T294]  ? __x64_sys_umount+0x122/0x170
[   22.147233][  T294]  ? path_umount+0xea0/0xea0
[   22.151627][  T294]  syscall_exit_to_user_mode+0xa3/0x160
[   22.157029][  T294]  do_syscall_64+0x47/0xb0
[   22.161260][  T294]  ? clear_bhb_loop+0x35/0x90
[   22.165772][  T294]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   22.171527][  T294] RIP: 0033:0x7f35a5b38a47
[   22.175764][  T294] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
[   22.195262][  T294] RSP: 002b:00007ffda3b9cfd8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   22.203467][  T294] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f35a5b38a47
[   22.211272][  T294] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda3b9d090
[   22.219082][  T294] RBP: 00007ffda3b9d090 R08: 0000000000000000 R09: 0000000000000000
[   22.226900][  T294] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffda3b9e100
[   22.234685][  T294] R13: 000055557c3166c0 R14: 00007ffda3b9e100 R15: 0000000000000001
[   22.242527][  T294]  </TASK>
[   22.245359][  T294] ---[ end trace 0d094fe03b0b0e25 ]---
[   22.250737][  T294] ==================================================================
[   22.258556][  T294] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   22.264626][  T294] Write of size 4 at addr 0000000000000170 by task syz-executor199/294
[   22.272708][  T294] 
[   22.274873][  T294] CPU: 1 PID: 294 Comm: syz-executor199 Tainted: G        W         5.15.176-syzkaller-00972-g829d9f138569 #0
[   22.286418][  T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   22.296309][  T294] Call Trace:
[   22.299435][  T294]  <TASK>
[   22.302210][  T294]  dump_stack_lvl+0x151/0x1c0
[   22.306724][  T294]  ? io_uring_drop_tctx_refs+0x190/0x190
[   22.312188][  T294]  ? _raw_spin_lock+0xa4/0x1b0
[   22.316815][  T294]  ? _raw_spin_trylock_bh+0x190/0x190
[   22.321998][  T294]  kasan_report+0x16f/0x1c0
[   22.326336][  T294]  ? ihold+0x20/0x60
[   22.330067][  T294]  ? ihold+0x20/0x60
[   22.333802][  T294]  kasan_check_range+0x293/0x2a0
[   22.338581][  T294]  __kasan_check_write+0x14/0x20
[   22.343347][  T294]  ihold+0x20/0x60
[   22.346907][  T294]  vfs_rmdir+0x201/0x470
[   22.350986][  T294]  incfs_kill_sb+0x113/0x230
[   22.355411][  T294]  deactivate_locked_super+0xad/0x110
[   22.360619][  T294]  deactivate_super+0xbe/0xf0
[   22.365130][  T294]  cleanup_mnt+0x45c/0x510
[   22.369480][  T294]  __cleanup_mnt+0x19/0x20
[   22.373888][  T294]  task_work_run+0x129/0x190
[   22.378305][  T294]  ptrace_notify+0x29e/0x350
[   22.382729][  T294]  ? do_notify_parent+0xa30/0xa30
[   22.387598][  T294]  ? user_path_at_empty+0x14e/0x1a0
[   22.392626][  T294]  ? __x64_sys_umount+0x122/0x170
[   22.397484][  T294]  ? path_umount+0xea0/0xea0
[   22.401911][  T294]  syscall_exit_to_user_mode+0xa3/0x160
[   22.407291][  T294]  do_syscall_64+0x47/0xb0
[   22.411545][  T294]  ? clear_bhb_loop+0x35/0x90
[   22.416058][  T294]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   22.421784][  T294] RIP: 0033:0x7f35a5b38a47
[   22.426039][  T294] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
[   22.445488][  T294] RSP: 002b:00007ffda3b9cfd8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   22.453725][  T294] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f35a5b38a47
[   22.461535][  T294] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda3b9d090
[   22.469346][  T294] RBP: 00007ffda3b9d090 R08: 0000000000000000 R09: 0000000000000000
[   22.477159][  T294] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffda3b9e100
[   22.484974][  T294] R13: 000055557c3166c0 R14: 00007ffda3b9e100 R15: 0000000000000001
[   22.492874][  T294]  </TASK>
[   22.495734][  T294] ==================================================================
[   22.503631][  T294] Disabling lock debugging due to kernel taint
[   22.509851][  T294] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   22.517461][  T294] #PF: supervisor write access in kernel mode
[   22.523359][  T294] #PF: error_code(0x0002) - not-present page
[   22.529175][  T294] PGD 0 P4D 0 
[   22.532387][  T294] Oops: 0002 [#1] PREEMPT SMP KASAN
[   22.537423][  T294] CPU: 1 PID: 294 Comm: syz-executor199 Tainted: G    B   W         5.15.176-syzkaller-00972-g829d9f138569 #0
[   22.548966][  T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   22.558863][  T294] RIP: 0010:ihold+0x25/0x60
[   22.563195][  T294] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 81 85 ae ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 80 ec f0 ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 04 89 ae
[   22.582642][  T294] RSP: 0018:ffffc900009c7c08 EFLAGS: 00010246
[   22.588539][  T294] RAX: ffff88810c77bb00 RBX: 0000000000000001 RCX: ffff88810c77bb40
[   22.596352][  T294] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   22.604162][  T294] RBP: ffffc900009c7c18 R08: ffffffff8141a99b R09: 0000000000000003
[   22.611975][  T294] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   22.619790][  T294] R13: ffff888120d97cc0 R14: 0000000000000000 R15: 1ffff110241b2f9e
[   22.627595][  T294] FS:  000055557c315380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   22.636360][  T294] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.642788][  T294] CR2: 0000000000000170 CR3: 000000011db02000 CR4: 00000000003506a0
[   22.650600][  T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.658408][  T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.666217][  T294] Call Trace:
[   22.669347][  T294]  <TASK>
[   22.672121][  T294]  ? __die_body+0x62/0xb0
[   22.676287][  T294]  ? __die+0x7e/0x90
[   22.680103][  T294]  ? page_fault_oops+0x7f9/0xa90
[   22.684879][  T294]  ? __kasan_check_write+0x14/0x20
[   22.689827][  T294]  ? kernelmode_fixup_or_oops+0xd0/0xd0
[   22.695206][  T294]  ? __schedule+0xcd4/0x1590
[   22.699646][  T294]  ? exc_page_fault+0x510/0x7f0
[   22.704343][  T294]  ? asm_exc_page_fault+0x27/0x30
[   22.709183][  T294]  ? check_panic_on_warn+0x5b/0xb0
[   22.714127][  T294]  ? ihold+0x25/0x60
[   22.717862][  T294]  ? ihold+0x20/0x60
[   22.721599][  T294]  vfs_rmdir+0x201/0x470
[   22.725673][  T294]  incfs_kill_sb+0x113/0x230
[   22.730100][  T294]  deactivate_locked_super+0xad/0x110
[   22.735302][  T294]  deactivate_super+0xbe/0xf0
[   22.739829][  T294]  cleanup_mnt+0x45c/0x510
[   22.744074][  T294]  __cleanup_mnt+0x19/0x20
[   22.748324][  T294]  task_work_run+0x129/0x190
[   22.752754][  T294]  ptrace_notify+0x29e/0x350
[   22.757179][  T294]  ? do_notify_parent+0xa30/0xa30
[   22.762044][  T294]  ? user_path_at_empty+0x14e/0x1a0
[   22.767071][  T294]  ? __x64_sys_umount+0x122/0x170
[   22.771935][  T294]  ? path_umount+0xea0/0xea0
[   22.776359][  T294]  syscall_exit_to_user_mode+0xa3/0x160
[   22.781739][  T294]  do_syscall_64+0x47/0xb0
[   22.785991][  T294]  ? clear_bhb_loop+0x35/0x90
[   22.790505][  T294]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   22.796233][  T294] RIP: 0033:0x7f35a5b38a47
[   22.800486][  T294] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
[   22.820098][  T294] RSP: 002b:00007ffda3b9cfd8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   22.828347][  T294] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f35a5b38a47
[   22.836158][  T294] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda3b9d090
[   22.843968][  T294] RBP: 00007ffda3b9d090 R08: 0000000000000000 R09: 0000000000000000
[   22.851779][  T294] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffda3b9e100
[   22.859587][  T294] R13: 000055557c3166c0 R14: 00007ffda3b9e100 R15: 0000000000000001
[   22.867405][  T294]  </TASK>
[   22.870263][  T294] Modules linked in:
[   22.874019][  T294] CR2: 0000000000000170
[   22.878005][  T294] ---[ end trace 0d094fe03b0b0e26 ]---
[   22.883284][  T294] RIP: 0010:ihold+0x25/0x60
[   22.887624][  T294] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 81 85 ae ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 80 ec f0 ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 04 89 ae
[   22.907066][  T294] RSP: 0018:ffffc900009c7c08 EFLAGS: 00010246
[   22.912966][  T294] RAX: ffff88810c77bb00 RBX: 0000000000000001 RCX: ffff88810c77bb40
[   22.920775][  T294] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   22.928589][  T294] RBP: ffffc900009c7c18 R08: ffffffff8141a99b R09: 0000000000000003
[   22.936398][  T294] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   22.944215][  T294] R13: ffff888120d97cc0 R14: 0000000000000000 R15: 1ffff110241b2f9e
[   22.952021][  T294] FS:  000055557c315380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   22.960786][  T294] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.967209][  T294] CR2: 0000000000000170 CR3: 000000011db02000 CR4: 00000000003506a0
[   22.975024][  T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.982834][  T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.990653][  T294] Kernel panic - not syncing: Fatal exception
[   22.996703][  T294] Kernel Offset: disabled
[   23.000801][  T294] Rebooting in 86400 seconds..