./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor838219811

<...>
Warning: Permanently added '10.128.0.234' (ED25519) to the list of known hosts.
execve("./syz-executor838219811", ["./syz-executor838219811"], 0x7ffd6d2b0420 /* 10 vars */) = 0
brk(NULL)                               = 0x55556a507000
brk(0x55556a507d00)                     = 0x55556a507d00
arch_prctl(ARCH_SET_FS, 0x55556a507380) = 0
set_tid_address(0x55556a507650)         = 341
set_robust_list(0x55556a507660, 24)     = 0
rseq(0x55556a507ca0, 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-executor838219811", 4096) = 27
getrandom("\x6d\x32\x22\x39\x5f\x2a\x0e\x69", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55556a507d00
brk(0x55556a528d00)                     = 0x55556a528d00
brk(0x55556a529000)                     = 0x55556a529000
mprotect(0x7fb18fab1000, 16384, 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
mkdir("./syzkaller.AzgM5f", 0700)       = 0
chmod("./syzkaller.AzgM5f", 0777)       = 0
chdir("./syzkaller.AzgM5f")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556a507650) = 342
./strace-static-x86_64: Process 342 attached
[pid   342] set_robust_list(0x55556a507660, 24) = 0
[pid   342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] getppid()                   = 0
[pid   342] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   342] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   342] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   342] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   342] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   342] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   342] unshare(CLONE_NEWNS)        = 0
[pid   342] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   342] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   342] unshare(CLONE_NEWCGROUP)    = 0
[pid   342] unshare(CLONE_NEWUTS)       = 0
[pid   342] unshare(CLONE_SYSVSEM)      = 0
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   342] getpid()                    = 1
[pid   342] 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, 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, inheritable=0}) = 0
[pid   342] 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, 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, inheritable=0}) = 0
[pid   342] unshare(CLONE_NEWNET)       = 0
[pid   342] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   342] write(3, "0 65535", 7)      = 7
[pid   342] close(3)                    = 0
[pid   342] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   342] write(3, "100000", 6)       = 6
[pid   342] close(3)                    = 0
[pid   342] mkdir("./syz-tmp", 0777)    = 0
[   23.611325][   T23] audit: type=1400 audit(1747350310.630:81): avc:  denied  { execmem } for  pid=341 comm="syz-executor838" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   23.639418][   T23] audit: type=1400 audit(1747350310.660:82): avc:  denied  { mounton } for  pid=342 comm="syz-executor838" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   342] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   342] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   342] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   342] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   342] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   342] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   342] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   342] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   342] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   342] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   342] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   342] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   342] 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)
[   23.676840][   T23] audit: type=1400 audit(1747350310.690:83): avc:  denied  { mounton } for  pid=342 comm="syz-executor838" path="/root/syzkaller.AzgM5f/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   23.701488][   T23] audit: type=1400 audit(1747350310.690:84): avc:  denied  { mount } for  pid=342 comm="syz-executor838" name="/" dev="tmpfs" ino=11263 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   342] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   342] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   342] 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   342] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   342] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   342] chdir("/")                  = 0
[pid   342] umount2("./pivot", MNT_DETACH) = 0
[pid   342] chroot("./newroot")         = 0
[pid   342] chdir("/")                  = 0
[pid   342] mkdir("/dev/gadgetfs", 0777) = 0
[   23.724086][   T23] audit: type=1400 audit(1747350310.740:85): avc:  denied  { mounton } for  pid=342 comm="syz-executor838" path="/root/syzkaller.AzgM5f/syz-tmp/newroot/dev" dev="tmpfs" ino=12289 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   23.750092][   T23] audit: type=1400 audit(1747350310.740:86): avc:  denied  { mount } for  pid=342 comm="syz-executor838" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[pid   342] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   342] mkdir("/dev/binderfs", 0777) = 0
[pid   342] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   342] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   342] mkdir("./0", 0777)          = 0
[pid   342] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556a507650) = 2
./strace-static-x86_64: Process 344 attached
[pid   344] set_robust_list(0x55556a507660, 24) = 0
[pid   344] chdir("./0")                = 0
[pid   344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   344] setpgid(0, 0)               = 0
[pid   344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   344] write(3, "1000", 4)         = 4
[pid   344] close(3)                    = 0
[pid   344] symlink("/dev/binderfs", "./binderfs") = 0
[pid   344] write(1, "executing program\n", 18executing program
) = 18
[pid   344] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   344] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   344] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0
[pid   344] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   344] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   344] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   344] exit_group(0)               = ?
[pid   344] +++ exited with 0 +++
[pid   342] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   342] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   342] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   342] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   342] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   342] getdents64(3, 0x55556a5086f0 /* 6 entries */, 32768) = 176
[pid   342] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   342] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   342] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   342] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   342] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   342] getdents64(4, 0x55556a510730 /* 2 entries */, 32768) = 48
[pid   342] getdents64(4, 0x55556a510730 /* 0 entries */, 32768) = 0
[pid   342] close(4)                    = 0
[pid   342] rmdir("./0/.incomplete")    = 0
[pid   342] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   342] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   342] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   342] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   342] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   342] getdents64(4, 0x55556a510730 /* 2 entries */, 32768) = 48
[pid   342] getdents64(4, 0x55556a510730 /* 0 entries */, 32768) = 0
[pid   342] close(4)                    = 0
[pid   342] rmdir("./0/.index")         = 0
[   23.754080][  T342] request_module fs-gadgetfs succeeded, but still no fs?
[   23.772073][   T23] audit: type=1400 audit(1747350310.740:87): avc:  denied  { mounton } for  pid=342 comm="syz-executor838" path="/root/syzkaller.AzgM5f/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
[   23.772094][   T23] audit: type=1400 audit(1747350310.740:88): avc:  denied  { mounton } for  pid=342 comm="syz-executor838" path="/root/syzkaller.AzgM5f/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=12294 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   23.833748][   T23] audit: type=1400 audit(1747350310.740:89): avc:  denied  { unmount } for  pid=342 comm="syz-executor838" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   23.833936][  T342] ------------[ cut here ]------------
[   23.853431][   T23] audit: type=1400 audit(1747350310.770:90): avc:  denied  { mounton } for  pid=342 comm="syz-executor838" path="/dev/gadgetfs" dev="devtmpfs" ino=12297 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   23.858829][  T342] WARNING: CPU: 0 PID: 342 at fs/inode.c:302 drop_nlink+0xc5/0x110
[   23.858839][  T342] Modules linked in:
[   23.893673][  T342] CPU: 0 PID: 342 Comm: syz-executor838 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
[   23.903917][  T342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   23.913976][  T342] RIP: 0010:drop_nlink+0xc5/0x110
[   23.918983][  T342] Code: 1b 48 8d bb d0 04 00 00 be 08 00 00 00 e8 b3 a4 f3 ff f0 48 ff 83 d0 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 4b d0 c5 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   23.938571][  T342] RSP: 0018:ffff8881f2cd7b40 EFLAGS: 00010293
[   23.944642][  T342] RAX: ffffffff8199ae95 RBX: ffff8881ee7e0e40 RCX: ffff8881f31ede80
[   23.952599][  T342] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   23.960557][  T342] RBP: ffff8881f2cd7b68 R08: 0000000000000004 R09: 0000000000000003
[   23.968521][  T342] R10: ffffed103e59af58 R11: 1ffff1103e59af58 R12: dffffc0000000000
[   23.976480][  T342] R13: 1ffff1103dcfc1d1 R14: ffff8881ee7e0e88 R15: 0000000000000000
[   23.984438][  T342] FS:  000055556a507380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   23.993349][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.999938][  T342] CR2: 0000563456832148 CR3: 00000001dd703000 CR4: 00000000003406b0
[   24.008149][  T342] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.016117][  T342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.024087][  T342] Call Trace:
[   24.027367][  T342]  shmem_rmdir+0x5b/0x90
[   24.031599][  T342]  vfs_rmdir+0x1b3/0x3e0
[   24.035826][  T342]  incfs_kill_sb+0xfe/0x210
[   24.040331][  T342]  deactivate_locked_super+0xa0/0x100
[   24.045685][  T342]  deactivate_super+0x14f/0x1d0
[   24.050524][  T342]  ? __kasan_check_write+0x14/0x20
[   24.055629][  T342]  ? deactivate_locked_super+0x100/0x100
[   24.061255][  T342]  ? fast_dput+0x83/0x290
[   24.065595][  T342]  cleanup_mnt+0x446/0x500
[   24.069998][  T342]  __cleanup_mnt+0x19/0x20
[   24.074424][  T342]  task_work_run+0x146/0x170
[   24.079088][  T342]  ptrace_notify+0x212/0x250
[   24.083673][  T342]  ? do_notify_parent+0x7e0/0x7e0
[   24.088685][  T342]  ? ksys_umount+0x266/0x360
[   24.093275][  T342]  ? namespace_unlock+0x3e0/0x3e0
[   24.098285][  T342]  syscall_slow_exit_work+0x17e/0x440
[   24.103642][  T342]  do_syscall_64+0x160/0x170
[   24.108232][  T342]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[   24.114121][  T342] RIP: 0033:0x7fb18fa3eac7
[   24.118526][  T342] 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
[   24.138116][  T342] RSP: 002b:00007ffde760c518 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.146511][  T342] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb18fa3eac7
[   24.154473][  T342] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffde760c5d0
[   24.162439][  T342] RBP: 00007ffde760c5d0 R08: 0000000000000000 R09: 0000000000000000
[   24.170403][  T342] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffde760d640
[   24.178368][  T342] R13: 000055556a5086c0 R14: 00007ffde760d640 R15: 0000000000000001
[   24.186334][  T342] ---[ end trace 4fa5819590db5db3 ]---
[   24.191948][  T342] ==================================================================
[   24.200171][  T342] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   24.206430][  T342] Write of size 4 at addr 0000000000000160 by task syz-executor838/342
[   24.214642][  T342] 
[   24.216962][  T342] CPU: 0 PID: 342 Comm: syz-executor838 Tainted: G        W         5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
[   24.228477][  T342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   24.238517][  T342] Call Trace:
[   24.241796][  T342]  __dump_stack+0x1e/0x20
[   24.246112][  T342]  dump_stack+0x15b/0x1b8
[   24.250430][  T342]  ? thaw_kernel_threads+0x220/0x220
[   24.255702][  T342]  ? show_regs_print_info+0x18/0x18
[   24.260884][  T342]  ? __kasan_check_write+0x14/0x20
[   24.265997][  T342]  ? _raw_spin_lock+0x8e/0xe0
[   24.270660][  T342]  ? ihold+0x20/0x60
[   24.274536][  T342]  ? ihold+0x20/0x60
[   24.278414][  T342]  __kasan_report+0xe4/0x120
[   24.282986][  T342]  ? ihold+0x20/0x60
[   24.286862][  T342]  kasan_report+0x30/0x60
[   24.291174][  T342]  check_memory_region+0x274/0x280
[   24.296266][  T342]  __kasan_check_write+0x14/0x20
[   24.301185][  T342]  ihold+0x20/0x60
[   24.304892][  T342]  vfs_rmdir+0x247/0x3e0
[   24.309227][  T342]  incfs_kill_sb+0xfe/0x210
[   24.313718][  T342]  deactivate_locked_super+0xa0/0x100
[   24.319077][  T342]  deactivate_super+0x14f/0x1d0
[   24.323942][  T342]  ? __kasan_check_write+0x14/0x20
[   24.329069][  T342]  ? deactivate_locked_super+0x100/0x100
[   24.334689][  T342]  ? fast_dput+0x83/0x290
[   24.339003][  T342]  cleanup_mnt+0x446/0x500
[   24.343416][  T342]  __cleanup_mnt+0x19/0x20
[   24.347822][  T342]  task_work_run+0x146/0x170
[   24.352408][  T342]  ptrace_notify+0x212/0x250
[   24.357011][  T342]  ? do_notify_parent+0x7e0/0x7e0
[   24.362024][  T342]  ? ksys_umount+0x266/0x360
[   24.366614][  T342]  ? namespace_unlock+0x3e0/0x3e0
[   24.371627][  T342]  syscall_slow_exit_work+0x17e/0x440
[   24.376988][  T342]  do_syscall_64+0x160/0x170
[   24.381564][  T342]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[   24.387439][  T342] RIP: 0033:0x7fb18fa3eac7
[   24.391848][  T342] 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
[   24.411434][  T342] RSP: 002b:00007ffde760c518 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.419828][  T342] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb18fa3eac7
[   24.427795][  T342] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffde760c5d0
[   24.435761][  T342] RBP: 00007ffde760c5d0 R08: 0000000000000000 R09: 0000000000000000
[   24.443719][  T342] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffde760d640
[   24.451689][  T342] R13: 000055556a5086c0 R14: 00007ffde760d640 R15: 0000000000000001
[   24.459656][  T342] ==================================================================
[   24.467705][  T342] Disabling lock debugging due to kernel taint
[   24.473979][  T342] BUG: kernel NULL pointer dereference, address: 0000000000000160
[   24.481860][  T342] #PF: supervisor write access in kernel mode
[   24.488028][  T342] #PF: error_code(0x0002) - not-present page
[   24.493988][  T342] PGD 0 P4D 0 
[   24.497355][  T342] Oops: 0002 [#1] PREEMPT SMP KASAN
[   24.502533][  T342] CPU: 0 PID: 342 Comm: syz-executor838 Tainted: G    B   W         5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
[   24.514040][  T342] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   24.524203][  T342] RIP: 0010:ihold+0x26/0x60
[   24.528692][  T342] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 61 c8 c5 ff 48 8d bb 60 01 00 00 be 04 00 00 00 e8 a0 9c f3 ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 60 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 81
[   24.548301][  T342] RSP: 0018:ffff8881f2cd7b80 EFLAGS: 00010246
[   24.554350][  T342] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881f31ede80
[   24.562302][  T342] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   24.570252][  T342] RBP: ffff8881f2cd7b90 R08: 0000000000000004 R09: 0000000000000003
[   24.578204][  T342] R10: fffffbfff0ca7a5c R11: 1ffffffff0ca7a5c R12: 1ffff1103e2340b0
[   24.586155][  T342] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.594125][  T342] FS:  000055556a507380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   24.603034][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.609602][  T342] CR2: 0000000000000160 CR3: 00000001dd703000 CR4: 00000000003406b0
[   24.617555][  T342] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.625626][  T342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.633605][  T342] Call Trace:
[   24.636881][  T342]  vfs_rmdir+0x247/0x3e0
[   24.641108][  T342]  incfs_kill_sb+0xfe/0x210
[   24.645596][  T342]  deactivate_locked_super+0xa0/0x100
[   24.650951][  T342]  deactivate_super+0x14f/0x1d0
[   24.655778][  T342]  ? __kasan_check_write+0x14/0x20
[   24.660869][  T342]  ? deactivate_locked_super+0x100/0x100
[   24.666481][  T342]  ? fast_dput+0x83/0x290
[   24.670791][  T342]  cleanup_mnt+0x446/0x500
[   24.675225][  T342]  __cleanup_mnt+0x19/0x20
[   24.679646][  T342]  task_work_run+0x146/0x170
[   24.684220][  T342]  ptrace_notify+0x212/0x250
[   24.688792][  T342]  ? do_notify_parent+0x7e0/0x7e0
[   24.693795][  T342]  ? ksys_umount+0x266/0x360
[   24.698389][  T342]  ? namespace_unlock+0x3e0/0x3e0
[   24.703391][  T342]  syscall_slow_exit_work+0x17e/0x440
[   24.708754][  T342]  do_syscall_64+0x160/0x170
[   24.713327][  T342]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[   24.719215][  T342] RIP: 0033:0x7fb18fa3eac7
[   24.723610][  T342] 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
[   24.743191][  T342] RSP: 002b:00007ffde760c518 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.751592][  T342] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb18fa3eac7
[   24.759548][  T342] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffde760c5d0
[   24.767509][  T342] RBP: 00007ffde760c5d0 R08: 0000000000000000 R09: 0000000000000000
[   24.775475][  T342] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffde760d640
[   24.783435][  T342] R13: 000055556a5086c0 R14: 00007ffde760d640 R15: 0000000000000001
[   24.791393][  T342] Modules linked in:
[   24.795280][  T342] CR2: 0000000000000160
[   24.799421][  T342] ---[ end trace 4fa5819590db5db4 ]---
[   24.804865][  T342] RIP: 0010:ihold+0x26/0x60
[   24.809365][  T342] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 61 c8 c5 ff 48 8d bb 60 01 00 00 be 04 00 00 00 e8 a0 9c f3 ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 60 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 81
[   24.828954][  T342] RSP: 0018:ffff8881f2cd7b80 EFLAGS: 00010246
[   24.835007][  T342] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881f31ede80
[   24.842955][  T342] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   24.850904][  T342] RBP: ffff8881f2cd7b90 R08: 0000000000000004 R09: 0000000000000003
[   24.858856][  T342] R10: fffffbfff0ca7a5c R11: 1ffffffff0ca7a5c R12: 1ffff1103e2340b0
[   24.866804][  T342] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.874754][  T342] FS:  000055556a507380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   24.883676][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.890247][  T342] CR2: 0000000000000160 CR3: 00000001dd703000 CR4: 00000000003406b0
[   24.898313][  T342] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.906264][  T342] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.914390][  T342] Kernel panic - not syncing: Fatal exception
[   24.920535][  T342] Kernel Offset: disabled
[   24.924864][  T342] Rebooting in 86400 seconds..