./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor395489087

<...>
Warning: Permanently added '10.128.1.186' (ED25519) to the list of known hosts.
execve("./syz-executor395489087", ["./syz-executor395489087"], 0x7ffd9f186dc0 /* 10 vars */) = 0
brk(NULL)                               = 0x55558d8db000
brk(0x55558d8dbd00)                     = 0x55558d8dbd00
arch_prctl(ARCH_SET_FS, 0x55558d8db380) = 0
set_tid_address(0x55558d8db650)         = 272
set_robust_list(0x55558d8db660, 24)     = 0
rseq(0x55558d8dbca0, 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-executor395489087", 4096) = 27
getrandom("\xda\x6f\x23\xa5\x1b\xa2\x88\x51", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558d8dbd00
brk(0x55558d8fcd00)                     = 0x55558d8fcd00
brk(0x55558d8fd000)                     = 0x55558d8fd000
mprotect(0x7f636514e000, 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.ZE3dHb", 0700)       = 0
chmod("./syzkaller.ZE3dHb", 0777)       = 0
chdir("./syzkaller.ZE3dHb")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558d8db650) = 273
./strace-static-x86_64: Process 273 attached
[pid   273] set_robust_list(0x55558d8db660, 24) = 0
[pid   273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   273] getppid()                   = 0
[pid   273] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   273] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   273] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   273] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   273] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   273] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   273] unshare(CLONE_NEWNS)        = 0
[pid   273] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   273] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   273] unshare(CLONE_NEWCGROUP)    = 0
[pid   273] unshare(CLONE_NEWUTS)       = 0
[pid   273] unshare(CLONE_SYSVSEM)      = 0
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   273] getpid()                    = 1
[pid   273] 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   273] 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   273] unshare(CLONE_NEWNET)       = 0
[pid   273] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   273] write(3, "0 65535", 7)      = 7
[pid   273] close(3)                    = 0
[pid   273] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   273] write(3, "100000", 6)       = 6
[pid   273] close(3)                    = 0
[pid   273] mkdir("./syz-tmp", 0777)    = 0
[   21.451925][   T24] audit: type=1400 audit(1746469483.000:80): avc:  denied  { execmem } for  pid=272 comm="syz-executor395" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   21.464039][   T24] audit: type=1400 audit(1746469483.010:81): avc:  denied  { mounton } for  pid=273 comm="syz-executor395" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   273] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   273] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   273] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   273] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   273] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   273] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   273] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   273] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   273] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   273] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   273] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   273] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   273] 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   273] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   273] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   273] 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   273] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   273] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   273] chdir("/")                  = 0
[pid   273] umount2("./pivot", MNT_DETACH) = 0
[pid   273] chroot("./newroot")         = 0
[pid   273] chdir("/")                  = 0
[   21.487945][   T24] audit: type=1400 audit(1746469483.030:82): avc:  denied  { mounton } for  pid=273 comm="syz-executor395" path="/root/syzkaller.ZE3dHb/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   21.512751][   T24] audit: type=1400 audit(1746469483.040:83): avc:  denied  { mount } for  pid=273 comm="syz-executor395" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   273] mkdir("/dev/gadgetfs", 0777) = 0
[pid   273] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   273] mkdir("/dev/binderfs", 0777) = 0
[pid   273] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   273] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   273] mkdir("./0", 0777)          = 0
[pid   273] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558d8db650) = 2
./strace-static-x86_64: Process 274 attached
[pid   274] set_robust_list(0x55558d8db660, 24) = 0
[pid   274] chdir("./0")                = 0
[pid   274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   274] setpgid(0, 0)               = 0
[pid   274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   274] write(3, "1000", 4)         = 4
[pid   274] close(3)                    = 0
[pid   274] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid   274] write(1, "executing program\n", 18) = 18
[pid   274] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   274] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   274] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0
[pid   274] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   274] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   274] close(28)                   = -1 EBADF (Bad file descriptor)
[   21.535461][   T24] audit: type=1400 audit(1746469483.060:84): avc:  denied  { mounton } for  pid=273 comm="syz-executor395" path="/root/syzkaller.ZE3dHb/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
[   21.537512][  T273] request_module fs-gadgetfs succeeded, but still no fs?
[   21.561232][   T24] audit: type=1400 audit(1746469483.060:85): avc:  denied  { mount } for  pid=273 comm="syz-executor395" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   21.577319][  T274] incfs: ino conflict with backing FS 9
[pid   274] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   274] exit_group(0)               = ?
[pid   274] +++ exited with 0 +++
[pid   273] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   273] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   273] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   273] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   273] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   273] getdents64(3, 0x55558d8dc6f0 /* 6 entries */, 32768) = 176
[pid   273] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   273] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   273] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   273] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   273] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   273] getdents64(4, 0x55558d8e4730 /* 2 entries */, 32768) = 48
[pid   273] getdents64(4, 0x55558d8e4730 /* 0 entries */, 32768) = 0
[pid   273] close(4)                    = 0
[pid   273] rmdir("./0/.incomplete")    = 0
[pid   273] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   273] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   273] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   273] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   273] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   273] getdents64(4, 0x55558d8e4730 /* 2 entries */, 32768) = 48
[pid   273] getdents64(4, 0x55558d8e4730 /* 0 entries */, 32768) = 0
[pid   273] close(4)                    = 0
[pid   273] rmdir("./0/.index")         = 0
[   21.590616][   T24] audit: type=1400 audit(1746469483.060:86): avc:  denied  { mounton } for  pid=273 comm="syz-executor395" path="/root/syzkaller.ZE3dHb/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
[   21.622281][  T273] ------------[ cut here ]------------
[   21.628421][   T24] audit: type=1400 audit(1746469483.060:87): avc:  denied  { mounton } for  pid=273 comm="syz-executor395" path="/root/syzkaller.ZE3dHb/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14553 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   21.628472][  T273] WARNING: CPU: 0 PID: 273 at fs/inode.c:304 drop_nlink+0xc5/0x110
[   21.656370][   T24] audit: type=1400 audit(1746469483.060:88): avc:  denied  { unmount } for  pid=273 comm="syz-executor395" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   21.664157][  T273] Modules linked in:
[   21.684098][   T24] audit: type=1400 audit(1746469483.080:89): avc:  denied  { mounton } for  pid=273 comm="syz-executor395" path="/dev/gadgetfs" dev="devtmpfs" ino=517 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   21.687712][  T273] CPU: 0 PID: 273 Comm: syz-executor395 Not tainted 5.10.236-syzkaller-00012-gab07aeb2c93d #0
[   21.721340][  T273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   21.731450][  T273] RIP: 0010:drop_nlink+0xc5/0x110
[   21.736565][  T273] Code: 1b 48 8d bb b8 04 00 00 be 08 00 00 00 e8 a3 23 f2 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 eb 3a b8 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   21.756222][  T273] RSP: 0018:ffffc90000be7be8 EFLAGS: 00010293
[   21.762298][  T273] RAX: ffffffff81ab51c5 RBX: ffff88810ca30b40 RCX: ffff88811c7e13c0
[   21.770318][  T273] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   21.778298][  T273] RBP: ffffc90000be7c10 R08: 0000000000000004 R09: 0000000000000003
[   21.786266][  T273] R10: fffff5200017cf6c R11: 1ffff9200017cf6c R12: dffffc0000000000
[   21.794300][  T273] R13: 1ffff11021946171 R14: ffff88810ca30b88 R15: 0000000000000000
[   21.802401][  T273] FS:  000055558d8db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   21.811343][  T273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.817936][  T273] CR2: 000055ac006e7308 CR3: 000000010a8bb000 CR4: 00000000003506b0
[   21.825938][  T273] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   21.833933][  T273] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   21.841912][  T273] Call Trace:
[   21.845188][  T273]  shmem_rmdir+0x5b/0x90
[   21.849445][  T273]  vfs_rmdir+0x1b3/0x3e0
[   21.853701][  T273]  incfs_kill_sb+0xfe/0x210
[   21.858228][  T273]  deactivate_locked_super+0xa0/0x100
[   21.863594][  T273]  deactivate_super+0xaf/0xe0
[   21.868285][  T273]  cleanup_mnt+0x446/0x500
[   21.872696][  T273]  __cleanup_mnt+0x19/0x20
[   21.877093][  T273]  task_work_run+0x127/0x190
[   21.881804][  T273]  ptrace_notify+0x212/0x250
[   21.886389][  T273]  ? do_notify_parent+0x7e0/0x7e0
[   21.891528][  T273]  ? user_path_at_empty+0x43/0x50
[   21.896546][  T273]  ? __x64_sys_umount+0x125/0x160
[   21.901595][  T273]  ? path_umount+0xe60/0xe60
[   21.906176][  T273]  syscall_exit_work+0x6e/0x140
[   21.911101][  T273]  syscall_exit_to_user_mode+0x5b/0x90
[   21.916552][  T273]  do_syscall_64+0x3d/0x40
[   21.920986][  T273]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   21.927045][  T273] RIP: 0033:0x7f63650dbac7
[   21.931489][  T273] 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
[   21.951196][  T273] RSP: 002b:00007fffaace3b18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   21.959633][  T273] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f63650dbac7
[   21.967689][  T273] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffaace3bd0
[   21.975674][  T273] RBP: 00007fffaace3bd0 R08: 0000000000000000 R09: 0000000000000000
[   21.983653][  T273] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffaace4c40
[   21.991629][  T273] R13: 000055558d8dc6c0 R14: 00007fffaace4c40 R15: 0000000000000001
[   21.999621][  T273] ---[ end trace 0b05de8b45da5ad7 ]---
[   22.005101][  T273] ==================================================================
[   22.013144][  T273] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   22.019375][  T273] Write of size 4 at addr 0000000000000170 by task syz-executor395/273
[   22.027587][  T273] 
[   22.030005][  T273] CPU: 0 PID: 273 Comm: syz-executor395 Tainted: G        W         5.10.236-syzkaller-00012-gab07aeb2c93d #0
[   22.041620][  T273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   22.051662][  T273] Call Trace:
[   22.054945][  T273]  __dump_stack+0x21/0x24
[   22.059255][  T273]  dump_stack_lvl+0x169/0x1d8
[   22.063912][  T273]  ? thaw_kernel_threads+0x220/0x220
[   22.069187][  T273]  ? show_regs_print_info+0x18/0x18
[   22.074385][  T273]  ? _raw_spin_lock+0x8e/0xe0
[   22.079056][  T273]  ? _raw_spin_trylock_bh+0x130/0x130
[   22.084422][  T273]  ? ihold+0x20/0x60
[   22.088299][  T273]  kasan_report+0xd8/0x130
[   22.092695][  T273]  ? ihold+0x20/0x60
[   22.096570][  T273]  kasan_check_range+0x280/0x290
[   22.101495][  T273]  __kasan_check_write+0x14/0x20
[   22.106414][  T273]  ihold+0x20/0x60
[   22.110130][  T273]  vfs_rmdir+0x247/0x3e0
[   22.114362][  T273]  incfs_kill_sb+0xfe/0x210
[   22.118860][  T273]  deactivate_locked_super+0xa0/0x100
[   22.124208][  T273]  deactivate_super+0xaf/0xe0
[   22.128865][  T273]  cleanup_mnt+0x446/0x500
[   22.133347][  T273]  __cleanup_mnt+0x19/0x20
[   22.137741][  T273]  task_work_run+0x127/0x190
[   22.142323][  T273]  ptrace_notify+0x212/0x250
[   22.146890][  T273]  ? do_notify_parent+0x7e0/0x7e0
[   22.151916][  T273]  ? user_path_at_empty+0x43/0x50
[   22.156926][  T273]  ? __x64_sys_umount+0x125/0x160
[   22.161940][  T273]  ? path_umount+0xe60/0xe60
[   22.166504][  T273]  syscall_exit_work+0x6e/0x140
[   22.171333][  T273]  syscall_exit_to_user_mode+0x5b/0x90
[   22.176773][  T273]  do_syscall_64+0x3d/0x40
[   22.181181][  T273]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   22.187047][  T273] RIP: 0033:0x7f63650dbac7
[   22.191440][  T273] 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
[   22.211050][  T273] RSP: 002b:00007fffaace3b18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   22.219543][  T273] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f63650dbac7
[   22.227520][  T273] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffaace3bd0
[   22.235758][  T273] RBP: 00007fffaace3bd0 R08: 0000000000000000 R09: 0000000000000000
[   22.243816][  T273] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffaace4c40
[   22.251785][  T273] R13: 000055558d8dc6c0 R14: 00007fffaace4c40 R15: 0000000000000001
[   22.259942][  T273] ==================================================================
[   22.268073][  T273] Disabling lock debugging due to kernel taint
[   22.274407][  T273] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   22.282405][  T273] #PF: supervisor write access in kernel mode
[   22.288468][  T273] #PF: error_code(0x0002) - not-present page
[   22.294431][  T273] PGD 0 P4D 0 
[   22.297800][  T273] Oops: 0002 [#1] PREEMPT SMP KASAN
[   22.303000][  T273] CPU: 0 PID: 273 Comm: syz-executor395 Tainted: G    B   W         5.10.236-syzkaller-00012-gab07aeb2c93d #0
[   22.314657][  T273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   22.324822][  T273] RIP: 0010:ihold+0x26/0x60
[   22.329309][  T273] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 01 33 b8 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 90 1b f2 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 81
[   22.348912][  T273] RSP: 0018:ffffc90000be7c28 EFLAGS: 00010246
[   22.354974][  T273] RAX: ffff88811c7e1300 RBX: 0000000000000000 RCX: 0000000000000286
[   22.362936][  T273] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   22.370911][  T273] RBP: ffffc90000be7c38 R08: 0000000000000004 R09: 0000000000000003
[   22.378918][  T273] R10: fffffbfff0d8e448 R11: 1ffffffff0d8e448 R12: 1ffff11024102be2
[   22.386871][  T273] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   22.394925][  T273] FS:  000055558d8db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   22.403834][  T273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.410419][  T273] CR2: 0000000000000170 CR3: 000000010a8bb000 CR4: 00000000003506b0
[   22.418466][  T273] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.426432][  T273] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.434384][  T273] Call Trace:
[   22.437695][  T273]  vfs_rmdir+0x247/0x3e0
[   22.441923][  T273]  incfs_kill_sb+0xfe/0x210
[   22.446412][  T273]  deactivate_locked_super+0xa0/0x100
[   22.451775][  T273]  deactivate_super+0xaf/0xe0
[   22.456438][  T273]  cleanup_mnt+0x446/0x500
[   22.460838][  T273]  __cleanup_mnt+0x19/0x20
[   22.465240][  T273]  task_work_run+0x127/0x190
[   22.469814][  T273]  ptrace_notify+0x212/0x250
[   22.474388][  T273]  ? do_notify_parent+0x7e0/0x7e0
[   22.479394][  T273]  ? user_path_at_empty+0x43/0x50
[   22.484428][  T273]  ? __x64_sys_umount+0x125/0x160
[   22.489447][  T273]  ? path_umount+0xe60/0xe60
[   22.494413][  T273]  syscall_exit_work+0x6e/0x140
[   22.499251][  T273]  syscall_exit_to_user_mode+0x5b/0x90
[   22.504694][  T273]  do_syscall_64+0x3d/0x40
[   22.509094][  T273]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   22.514968][  T273] RIP: 0033:0x7f63650dbac7
[   22.519368][  T273] 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
[   22.539006][  T273] RSP: 002b:00007fffaace3b18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   22.547404][  T273] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f63650dbac7
[   22.555363][  T273] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffaace3bd0
[   22.563333][  T273] RBP: 00007fffaace3bd0 R08: 0000000000000000 R09: 0000000000000000
[   22.571286][  T273] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffaace4c40
[   22.579253][  T273] R13: 000055558d8dc6c0 R14: 00007fffaace4c40 R15: 0000000000000001
[   22.587227][  T273] Modules linked in:
[   22.591216][  T273] CR2: 0000000000000170
[   22.595364][  T273] ---[ end trace 0b05de8b45da5ad8 ]---
[   22.600821][  T273] RIP: 0010:ihold+0x26/0x60
[   22.605307][  T273] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 01 33 b8 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 90 1b f2 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 81
[   22.624898][  T273] RSP: 0018:ffffc90000be7c28 EFLAGS: 00010246
[   22.630951][  T273] RAX: ffff88811c7e1300 RBX: 0000000000000000 RCX: 0000000000000286
[   22.638905][  T273] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   22.646861][  T273] RBP: ffffc90000be7c38 R08: 0000000000000004 R09: 0000000000000003
[   22.654822][  T273] R10: fffffbfff0d8e448 R11: 1ffffffff0d8e448 R12: 1ffff11024102be2
[   22.662777][  T273] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   22.670736][  T273] FS:  000055558d8db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   22.679651][  T273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.686218][  T273] CR2: 0000000000000170 CR3: 000000010a8bb000 CR4: 00000000003506b0
[   22.694179][  T273] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.702133][  T273] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.710086][  T273] Kernel panic - not syncing: Fatal exception
[   22.716357][  T273] Kernel Offset: disabled
[   22.720671][  T273] Rebooting in 86400 seconds..