./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2269476719

<...>
Warning: Permanently added '10.128.0.204' (ED25519) to the list of known hosts.
execve("./syz-executor2269476719", ["./syz-executor2269476719"], 0x7ffd566f7640 /* 10 vars */) = 0
brk(NULL)                               = 0x5555825af000
brk(0x5555825afd00)                     = 0x5555825afd00
arch_prctl(ARCH_SET_FS, 0x5555825af380) = 0
set_tid_address(0x5555825af650)         = 369
set_robust_list(0x5555825af660, 24)     = 0
rseq(0x5555825afca0, 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-executor2269476719", 4096) = 28
getrandom("\x0b\xd0\x9e\x06\x79\xef\xc1\xa3", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x5555825afd00
brk(0x5555825d0d00)                     = 0x5555825d0d00
brk(0x5555825d1000)                     = 0x5555825d1000
mprotect(0x7fad42499000, 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.5vy9hd", 0700)       = 0
chmod("./syzkaller.5vy9hd", 0777)       = 0
chdir("./syzkaller.5vy9hd")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555825af650) = 370
./strace-static-x86_64: Process 370 attached
[pid   370] set_robust_list(0x5555825af660, 24) = 0
[pid   370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   370] getppid()                   = 0
[pid   370] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   370] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   370] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   370] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   370] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   370] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   370] unshare(CLONE_NEWNS)        = 0
[pid   370] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[   36.657983][   T23] audit: type=1400 audit(1737876728.690:66): avc:  denied  { execmem } for  pid=369 comm="syz-executor226" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[pid   370] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   370] unshare(CLONE_NEWCGROUP)    = 0
[pid   370] unshare(CLONE_NEWUTS)       = 0
[pid   370] unshare(CLONE_SYSVSEM)      = 0
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   370] getpid()                    = 1
[pid   370] 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   370] 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   370] unshare(CLONE_NEWNET)       = 0
[pid   370] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   370] write(3, "0 65535", 7)      = 7
[pid   370] close(3)                    = 0
[pid   370] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   370] write(3, "100000", 6)       = 6
[pid   370] close(3)                    = 0
[pid   370] mkdir("./syz-tmp", 0777)    = 0
[pid   370] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   370] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   370] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   370] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   370] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[   36.709168][   T23] audit: type=1400 audit(1737876728.740:67): avc:  denied  { mounton } for  pid=370 comm="syz-executor226" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   370] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   370] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   370] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   370] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   370] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   370] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   370] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   370] 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   370] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   370] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   370] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   370] chdir("/")                  = 0
[pid   370] umount2("./pivot", MNT_DETACH) = 0
[pid   370] chroot("./newroot")         = 0
[pid   370] chdir("/")                  = 0
[pid   370] mkdir("/dev/gadgetfs", 0777) = 0
[pid   370] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   370] mkdir("/dev/binderfs", 0777) = 0
[pid   370] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   370] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   370] mkdir("./0", 0777)          = 0
[pid   370] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555825af650) = 2
./strace-static-x86_64: Process 372 attached
[pid   372] set_robust_list(0x5555825af660, 24) = 0
[pid   372] chdir("./0")                = 0
[pid   372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   372] setpgid(0, 0)               = 0
[pid   372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   372] write(3, "1000", 4)         = 4
[pid   372] close(3)                    = 0
executing program
[pid   372] symlink("/dev/binderfs", "./binderfs") = 0
[pid   372] write(1, "executing program\n", 18) = 18
[pid   372] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   372] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[   36.744413][   T23] audit: type=1400 audit(1737876728.770:68): avc:  denied  { mounton } for  pid=370 comm="syz-executor226" path="/root/syzkaller.5vy9hd/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   36.769355][   T23] audit: type=1400 audit(1737876728.770:69): avc:  denied  { mount } for  pid=370 comm="syz-executor226" name="/" dev="tmpfs" ino=12332 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   36.771848][  T370] request_module fs-gadgetfs succeeded, but still no fs?
[pid   372] mount("./file0", "./file0", "incremental-fs", MS_RDONLY, NULL) = 0
[pid   372] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   372] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   372] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   372] exit_group(0)               = ?
[pid   372] +++ exited with 0 +++
[pid   370] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   370] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   370] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   370] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   370] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   370] getdents64(3, 0x5555825b06f0 /* 6 entries */, 32768) = 176
[pid   370] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   370] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   370] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   370] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   370] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   370] getdents64(4, 0x5555825b8730 /* 2 entries */, 32768) = 48
[pid   370] getdents64(4, 0x5555825b8730 /* 0 entries */, 32768) = 0
[pid   370] close(4)                    = 0
[pid   370] rmdir("./0/.incomplete")    = 0
[pid   370] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   370] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   370] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   370] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   370] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   370] getdents64(4, 0x5555825b8730 /* 2 entries */, 32768) = 48
[pid   370] getdents64(4, 0x5555825b8730 /* 0 entries */, 32768) = 0
[pid   370] close(4)                    = 0
[pid   370] rmdir("./0/.index")         = 0
[   36.792261][   T23] audit: type=1400 audit(1737876728.790:70): avc:  denied  { mounton } for  pid=370 comm="syz-executor226" path="/root/syzkaller.5vy9hd/syz-tmp/newroot/dev" dev="tmpfs" ino=12334 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   36.825249][   T23] audit: type=1400 audit(1737876728.790:71): avc:  denied  { mount } for  pid=370 comm="syz-executor226" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   36.847159][   T23] audit: type=1400 audit(1737876728.790:72): avc:  denied  { mounton } for  pid=370 comm="syz-executor226" path="/root/syzkaller.5vy9hd/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
[   36.847839][  T370] ------------[ cut here ]------------
[   36.873776][   T23] audit: type=1400 audit(1737876728.790:73): avc:  denied  { mounton } for  pid=370 comm="syz-executor226" path="/root/syzkaller.5vy9hd/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=12339 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   36.879005][  T370] WARNING: CPU: 0 PID: 370 at fs/inode.c:302 drop_nlink+0xbb/0x100
[   36.879015][  T370] Modules linked in:
[   36.906506][   T23] audit: type=1400 audit(1737876728.790:74): avc:  denied  { unmount } for  pid=370 comm="syz-executor226" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   36.914255][  T370] CPU: 0 PID: 370 Comm: syz-executor226 Not tainted 5.4.289-syzkaller-00025-g49530c73f82d #0
[   36.914261][  T370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   36.914299][  T370] RIP: 0010:drop_nlink+0xbb/0x100
[   36.914316][  T370] Code: 49 8b 1e 48 8d bb d0 04 00 00 be 08 00 00 00 e8 9b 99 f2 ff f0 48 ff 83 d0 04 00 00 5b 41 5c 41 5e 41 5f 5d c3 e8 e5 db c2 ff <0f> 0b eb 89 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   36.981683][  T370] RSP: 0018:ffff8881dd457b68 EFLAGS: 00010293
[   36.987589][  T370] RAX: ffffffff81a16e8b RBX: 1ffff1103bdebbfc RCX: ffff8881f31cee40
[   36.995400][  T370] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   37.003208][  T370] RBP: 0000000000000000 R08: ffffffff81a16e0f R09: 0000000000000003
[   37.011017][  T370] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881def5dfe0
[   37.019955][  T370] R13: dffffc0000000000 R14: ffff8881def5df98 R15: dffffc0000000000
[   37.027771][  T370] FS:  00005555825af380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   37.036530][  T370] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.042956][  T370] CR2: 000056031addd198 CR3: 00000001f4ee5000 CR4: 00000000003406b0
[   37.050769][  T370] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.058577][  T370] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.066385][  T370] Call Trace:
[   37.069523][  T370]  ? __warn+0x162/0x250
[   37.073511][  T370]  ? report_bug+0x3a1/0x4e0
[   37.077846][  T370]  ? drop_nlink+0xbb/0x100
[   37.082104][  T370]  ? drop_nlink+0xbb/0x100
[   37.086360][  T370]  ? do_invalid_op+0x6e/0x110
[   37.090873][  T370]  ? invalid_op+0x1e/0x30
[   37.095032][  T370]  ? drop_nlink+0x3f/0x100
[   37.099379][  T370]  ? drop_nlink+0xbb/0x100
[   37.103635][  T370]  ? drop_nlink+0xbb/0x100
[   37.107890][  T370]  ? drop_nlink+0xbb/0x100
[   37.112141][  T370]  shmem_rmdir+0x54/0x80
[   37.116218][  T370]  vfs_rmdir+0x285/0x3c0
[   37.120302][  T370]  incfs_kill_sb+0x105/0x200
[   37.124726][  T370]  deactivate_locked_super+0xa8/0x110
[   37.129933][  T370]  deactivate_super+0x1e2/0x2a0
[   37.134621][  T370]  ? deactivate_locked_super+0x110/0x110
[   37.140088][  T370]  ? fast_dput+0x7a/0x280
[   37.144253][  T370]  cleanup_mnt+0x44e/0x500
[   37.148505][  T370]  task_work_run+0x140/0x170
[   37.152933][  T370]  ptrace_notify+0x29e/0x350
[   37.157362][  T370]  ? do_notify_parent+0xa10/0xa10
[   37.162218][  T370]  ? ksys_umount+0x3a6/0x410
[   37.166644][  T370]  ? namespace_unlock+0x4e0/0x4e0
[   37.171512][  T370]  ? fpu__clear+0x3c0/0x3c0
[   37.175846][  T370]  syscall_slow_exit_work+0x167/0x400
[   37.181056][  T370]  do_syscall_64+0x19d/0x1c0
[   37.185479][  T370]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[   37.191413][  T370] RIP: 0033:0x7fad42426a47
[   37.195643][  T370] 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
[   37.215077][  T370] RSP: 002b:00007ffd46495f08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   37.223328][  T370] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad42426a47
[   37.231128][  T370] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd46495fc0
[   37.238941][  T370] RBP: 00007ffd46495fc0 R08: 0000000000000000 R09: 0000000000000000
[   37.246752][  T370] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd46497030
[   37.254562][  T370] R13: 00005555825b06c0 R14: 00007ffd46497030 R15: 0000000000000001
[   37.262379][  T370] ---[ end trace 006a4ddc453fd27d ]---
[   37.267739][   T23] audit: type=1400 audit(1737876728.800:75): avc:  denied  { mounton } for  pid=370 comm="syz-executor226" path="/dev/gadgetfs" dev="devtmpfs" ino=12341 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   37.272836][  T370] ==================================================================
[   37.298549][  T370] BUG: KASAN: null-ptr-deref in ihold+0x1b/0x50
[   37.304582][  T370] Write of size 4 at addr 0000000000000160 by task syz-executor226/370
[   37.312649][  T370] 
[   37.314837][  T370] CPU: 0 PID: 370 Comm: syz-executor226 Tainted: G        W         5.4.289-syzkaller-00025-g49530c73f82d #0
[   37.326191][  T370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   37.336085][  T370] Call Trace:
[   37.339217][  T370]  dump_stack+0x1d8/0x241
[   37.343378][  T370]  ? panic+0x89d/0x89d
[   37.347289][  T370]  ? nf_ct_l4proto_log_invalid+0x258/0x258
[   37.352931][  T370]  ? _raw_spin_trylock_bh+0x190/0x190
[   37.358136][  T370]  ? _raw_spin_unlock+0x49/0x60
[   37.362820][  T370]  ? ihold+0x1b/0x50
[   37.366551][  T370]  __kasan_report+0xe9/0x120
[   37.370979][  T370]  ? ihold+0x1b/0x50
[   37.374712][  T370]  kasan_report+0x30/0x60
[   37.378877][  T370]  check_memory_region+0x272/0x280
[   37.383824][  T370]  ihold+0x1b/0x50
[   37.387385][  T370]  vfs_rmdir+0x1e0/0x3c0
[   37.391462][  T370]  incfs_kill_sb+0x105/0x200
[   37.395888][  T370]  deactivate_locked_super+0xa8/0x110
[   37.401100][  T370]  deactivate_super+0x1e2/0x2a0
[   37.405783][  T370]  ? deactivate_locked_super+0x110/0x110
[   37.411249][  T370]  ? fast_dput+0x7a/0x280
[   37.415417][  T370]  cleanup_mnt+0x44e/0x500
[   37.419671][  T370]  task_work_run+0x140/0x170
[   37.424098][  T370]  ptrace_notify+0x29e/0x350
[   37.428626][  T370]  ? do_notify_parent+0xa10/0xa10
[   37.433468][  T370]  ? ksys_umount+0x3a6/0x410
[   37.437895][  T370]  ? namespace_unlock+0x4e0/0x4e0
[   37.442756][  T370]  ? fpu__clear+0x3c0/0x3c0
[   37.447099][  T370]  syscall_slow_exit_work+0x167/0x400
[   37.452306][  T370]  do_syscall_64+0x19d/0x1c0
[   37.456729][  T370]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[   37.462461][  T370] RIP: 0033:0x7fad42426a47
[   37.466710][  T370] 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
[   37.486149][  T370] RSP: 002b:00007ffd46495f08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   37.494425][  T370] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad42426a47
[   37.502208][  T370] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd46495fc0
[   37.510021][  T370] RBP: 00007ffd46495fc0 R08: 0000000000000000 R09: 0000000000000000
[   37.517835][  T370] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd46497030
[   37.525640][  T370] R13: 00005555825b06c0 R14: 00007ffd46497030 R15: 0000000000000001
[   37.533587][  T370] ==================================================================
[   37.541562][  T370] Disabling lock debugging due to kernel taint
[   37.549493][  T370] BUG: kernel NULL pointer dereference, address: 0000000000000160
[   37.557098][  T370] #PF: supervisor write access in kernel mode
[   37.562994][  T370] #PF: error_code(0x0002) - not-present page
[   37.568816][  T370] PGD 0 P4D 0 
[   37.572026][  T370] Oops: 0002 [#1] PREEMPT SMP KASAN
[   37.577066][  T370] CPU: 0 PID: 370 Comm: syz-executor226 Tainted: G    B   W         5.4.289-syzkaller-00025-g49530c73f82d #0
[   37.588431][  T370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   37.598335][  T370] RIP: 0010:ihold+0x20/0x50
[   37.602662][  T370] Code: 0f 1f 84 00 00 00 00 00 66 90 55 53 48 89 fb e8 46 d4 c2 ff 48 8d bb 60 01 00 00 be 04 00 00 00 e8 d5 91 f2 ff bd 01 00 00 00 <f0> 0f c1 ab 60 01 00 00 ff c5 bf 02 00 00 00 89 ee e8 0a d7 c2 ff
[   37.622104][  T370] RSP: 0018:ffff8881dd457ba0 EFLAGS: 00010246
[   37.628003][  T370] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881f31cee40
[   37.635815][  T370] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   37.643625][  T370] RBP: 0000000000000001 R08: ffffffff813ae535 R09: 0000000000000003
[   37.651441][  T370] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000
[   37.659249][  T370] R13: dffffc0000000000 R14: ffff8881def5ea00 R15: 0000000000000000
[   37.667073][  T370] FS:  00005555825af380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   37.675830][  T370] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.682250][  T370] CR2: 0000000000000160 CR3: 00000001f4ee5000 CR4: 00000000003406b0
[   37.690064][  T370] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.697873][  T370] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.705680][  T370] Call Trace:
[   37.708820][  T370]  ? __die+0xb4/0x100
[   37.712990][  T370]  ? no_context+0xac7/0xd20
[   37.717338][  T370]  ? is_prefetch+0x4b0/0x4b0
[   37.721743][  T370]  ? ihold+0x1b/0x50
[   37.725490][  T370]  ? __do_page_fault+0xa72/0xbb0
[   37.730261][  T370]  ? __bad_area_nosemaphore+0xc0/0x470
[   37.735554][  T370]  ? page_fault+0x2f/0x40
[   37.739711][  T370]  ? check_panic_on_warn+0x55/0xa0
[   37.744658][  T370]  ? ihold+0x20/0x50
[   37.748390][  T370]  vfs_rmdir+0x1e0/0x3c0
[   37.752469][  T370]  incfs_kill_sb+0x105/0x200
[   37.756894][  T370]  deactivate_locked_super+0xa8/0x110
[   37.762103][  T370]  deactivate_super+0x1e2/0x2a0
[   37.766792][  T370]  ? deactivate_locked_super+0x110/0x110
[   37.772255][  T370]  ? fast_dput+0x7a/0x280
[   37.776422][  T370]  cleanup_mnt+0x44e/0x500
[   37.780676][  T370]  task_work_run+0x140/0x170
[   37.785100][  T370]  ptrace_notify+0x29e/0x350
[   37.789567][  T370]  ? do_notify_parent+0xa10/0xa10
[   37.794394][  T370]  ? ksys_umount+0x3a6/0x410
[   37.798823][  T370]  ? namespace_unlock+0x4e0/0x4e0
[   37.803674][  T370]  ? fpu__clear+0x3c0/0x3c0
[   37.808017][  T370]  syscall_slow_exit_work+0x167/0x400
[   37.813229][  T370]  do_syscall_64+0x19d/0x1c0
[   37.817652][  T370]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1
[   37.823372][  T370] RIP: 0033:0x7fad42426a47
[   37.827628][  T370] 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
[   37.847064][  T370] RSP: 002b:00007ffd46495f08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   37.855310][  T370] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fad42426a47
[   37.863119][  T370] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd46495fc0
[   37.870943][  T370] RBP: 00007ffd46495fc0 R08: 0000000000000000 R09: 0000000000000000
[   37.878749][  T370] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd46497030
[   37.886567][  T370] R13: 00005555825b06c0 R14: 00007ffd46497030 R15: 0000000000000001
[   37.894370][  T370] Modules linked in:
[   37.898113][  T370] CR2: 0000000000000160
[   37.902250][  T370] ---[ end trace 006a4ddc453fd27e ]---
[   37.907528][  T370] RIP: 0010:ihold+0x20/0x50
[   37.911868][  T370] Code: 0f 1f 84 00 00 00 00 00 66 90 55 53 48 89 fb e8 46 d4 c2 ff 48 8d bb 60 01 00 00 be 04 00 00 00 e8 d5 91 f2 ff bd 01 00 00 00 <f0> 0f c1 ab 60 01 00 00 ff c5 bf 02 00 00 00 89 ee e8 0a d7 c2 ff
[   37.931303][  T370] RSP: 0018:ffff8881dd457ba0 EFLAGS: 00010246
[   37.937199][  T370] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881f31cee40
[   37.945013][  T370] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   37.952823][  T370] RBP: 0000000000000001 R08: ffffffff813ae535 R09: 0000000000000003
[   37.960633][  T370] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000
[   37.968445][  T370] R13: dffffc0000000000 R14: ffff8881def5ea00 R15: 0000000000000000
[   37.976257][  T370] FS:  00005555825af380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   37.985021][  T370] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.991448][  T370] CR2: 0000000000000160 CR3: 00000001f4ee5000 CR4: 00000000003406b0
[   37.999265][  T370] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   38.007076][  T370] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   38.014878][  T370] Kernel panic - not syncing: Fatal exception
[   38.021041][  T370] Kernel Offset: disabled
[   38.025171][  T370] Rebooting in 86400 seconds..