./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor619526470

<...>
Warning: Permanently added '10.128.0.93' (ED25519) to the list of known hosts.
execve("./syz-executor619526470", ["./syz-executor619526470"], 0x7ffe2ba21b90 /* 10 vars */) = 0
brk(NULL)                               = 0x555557c43000
brk(0x555557c43d00)                     = 0x555557c43d00
arch_prctl(ARCH_SET_FS, 0x555557c43380) = 0
set_tid_address(0x555557c43650)         = 288
set_robust_list(0x555557c43660, 24)     = 0
rseq(0x555557c43ca0, 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-executor619526470", 4096) = 27
getrandom("\xca\xff\x67\xf1\x8e\xdb\xcb\x23", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555557c43d00
brk(0x555557c64d00)                     = 0x555557c64d00
brk(0x555557c65000)                     = 0x555557c65000
mprotect(0x7fb4d7aea000, 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.00RTQ8", 0700)       = 0
chmod("./syzkaller.00RTQ8", 0777)       = 0
chdir("./syzkaller.00RTQ8")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557c43650) = 289
./strace-static-x86_64: Process 289 attached
[pid   289] set_robust_list(0x555557c43660, 24) = 0
[pid   289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   289] getppid()                   = 0
[pid   289] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   289] unshare(CLONE_NEWNS)        = 0
[pid   289] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   289] unshare(CLONE_NEWCGROUP)    = 0
[pid   289] unshare(CLONE_NEWUTS)       = 0
[pid   289] unshare(CLONE_SYSVSEM)      = 0
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] getpid()                    = 1
[pid   289] 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   289] 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   289] unshare(CLONE_NEWNET)       = 0
[pid   289] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   289] write(3, "0 65535", 7)      = 7
[pid   289] close(3)                    = 0
[pid   289] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   289] write(3, "100000", 6)       = 6
[pid   289] close(3)                    = 0
[pid   289] mkdir("./syz-tmp", 0777)    = 0
[pid   289] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[   22.999283][   T24] audit: type=1400 audit(1745627660.280:66): avc:  denied  { execmem } for  pid=288 comm="syz-executor619" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   23.024308][   T24] audit: type=1400 audit(1745627660.310:67): avc:  denied  { mounton } for  pid=289 comm="syz-executor619" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   289] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   289] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   289] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   289] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   289] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   289] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   289] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] 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   289] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   289] 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   289] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   289] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   289] chdir("/")                  = 0
[pid   289] umount2("./pivot", MNT_DETACH) = 0
[pid   289] chroot("./newroot")         = 0
[pid   289] chdir("/")                  = 0
[pid   289] mkdir("/dev/gadgetfs", 0777) = 0
[   23.059101][   T24] audit: type=1400 audit(1745627660.340:68): avc:  denied  { mounton } for  pid=289 comm="syz-executor619" path="/root/syzkaller.00RTQ8/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[pid   289] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   289] mkdir("/dev/binderfs", 0777) = 0
[pid   289] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   289] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   289] mkdir("./0", 0777)          = 0
[pid   289] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557c43650) = 2
./strace-static-x86_64: Process 290 attached
[pid   290] set_robust_list(0x555557c43660, 24) = 0
[pid   290] chdir("./0")                = 0
[pid   290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   290] setpgid(0, 0)               = 0
[pid   290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   290] write(3, "1000", 4)         = 4
[pid   290] close(3)                    = 0
[pid   290] symlink("/dev/binderfs", "./binderfs") = 0
[pid   290] write(1, "executing program\n", 18executing program
) = 18
[pid   290] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   290] mount(".", "./file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[   23.088966][   T24] audit: type=1400 audit(1745627660.340:69): avc:  denied  { mount } for  pid=289 comm="syz-executor619" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   23.092760][  T289] request_module fs-gadgetfs succeeded, but still no fs?
[   23.115928][   T24] audit: type=1400 audit(1745627660.350:70): avc:  denied  { mounton } for  pid=289 comm="syz-executor619" path="/root/syzkaller.00RTQ8/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
[pid   290] mount("./file0", "./file0", "incremental-fs", MS_RDONLY, NULL) = 0
[pid   290] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   290] exit_group(0)               = ?
[pid   290] +++ exited with 0 +++
[pid   289] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[pid   289] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   289] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   289] getdents64(3, 0x555557c446f0 /* 6 entries */, 32768) = 176
[pid   289] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   289] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   289] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   289] getdents64(4, 0x555557c4c730 /* 2 entries */, 32768) = 48
[pid   289] getdents64(4, 0x555557c4c730 /* 0 entries */, 32768) = 0
[pid   289] close(4)                    = 0
[pid   289] rmdir("./0/.incomplete")    = 0
[pid   289] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   289] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   289] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   289] getdents64(4, 0x555557c4c730 /* 2 entries */, 32768) = 48
[pid   289] getdents64(4, 0x555557c4c730 /* 0 entries */, 32768) = 0
[pid   289] close(4)                    = 0
[pid   289] rmdir("./0/.index")         = 0
[   23.141168][  T290] incfs: ino conflict with backing FS 9
[   23.156491][   T24] audit: type=1400 audit(1745627660.350:71): avc:  denied  { mount } for  pid=289 comm="syz-executor619" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   23.189840][   T24] audit: type=1400 audit(1745627660.350:72): avc:  denied  { mounton } for  pid=289 comm="syz-executor619" path="/root/syzkaller.00RTQ8/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
[   23.190115][  T289] ------------[ cut here ]------------
[   23.222074][   T24] audit: type=1400 audit(1745627660.350:73): avc:  denied  { mounton } for  pid=289 comm="syz-executor619" path="/root/syzkaller.00RTQ8/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=13966 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   23.228529][  T289] WARNING: CPU: 0 PID: 289 at fs/inode.c:304 drop_nlink+0xc5/0x110
[   23.260026][   T24] audit: type=1400 audit(1745627660.360:74): avc:  denied  { unmount } for  pid=289 comm="syz-executor619" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   23.271971][  T289] Modules linked in:
[   23.293578][   T24] audit: type=1400 audit(1745627660.370:75): avc:  denied  { mounton } for  pid=289 comm="syz-executor619" path="/dev/gadgetfs" dev="devtmpfs" ino=509 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   23.301731][  T289] CPU: 0 PID: 289 Comm: syz-executor619 Not tainted 5.10.236-syzkaller #0
[   23.341971][  T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   23.355412][  T289] RIP: 0010:drop_nlink+0xc5/0x110
[   23.360539][  T289] 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 2b 3b b8 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   23.389582][  T289] RSP: 0018:ffffc90000b77be8 EFLAGS: 00010293
[   23.395798][  T289] RAX: ffffffff81ab5015 RBX: ffff88810d054b40 RCX: ffff88810aefe2c0
[   23.404309][  T289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   23.414808][  T289] RBP: ffffc90000b77c10 R08: 0000000000000004 R09: 0000000000000003
[   23.423223][  T289] R10: fffff5200016ef6c R11: 1ffff9200016ef6c R12: dffffc0000000000
[   23.432650][  T289] R13: 1ffff11021a0a971 R14: ffff88810d054b88 R15: 0000000000000000
[   23.442969][  T289] FS:  0000555557c43380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   23.453939][  T289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.461651][  T289] CR2: 0000000029ceb248 CR3: 0000000100bc6000 CR4: 00000000003506a0
[   23.470078][  T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.478602][  T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.486458][  T289] Call Trace:
[   23.489682][  T289]  shmem_rmdir+0x5b/0x90
[   23.494019][  T289]  vfs_rmdir+0x1b3/0x3e0
[   23.498588][  T289]  incfs_kill_sb+0xfe/0x210
[   23.503276][  T289]  deactivate_locked_super+0xa0/0x100
[   23.508754][  T289]  deactivate_super+0xaf/0xe0
[   23.513442][  T289]  cleanup_mnt+0x446/0x500
[   23.517912][  T289]  __cleanup_mnt+0x19/0x20
[   23.522312][  T289]  task_work_run+0x127/0x190
[   23.530057][  T289]  ptrace_notify+0x212/0x250
[   23.535339][  T289]  ? do_notify_parent+0x7e0/0x7e0
[   23.540407][  T289]  ? user_path_at_empty+0x43/0x50
[   23.545553][  T289]  ? __x64_sys_umount+0x125/0x160
[   23.550851][  T289]  ? path_umount+0xe60/0xe60
[   23.555265][  T289]  syscall_exit_work+0x6e/0x140
[   23.560353][  T289]  syscall_exit_to_user_mode+0x5b/0x90
[   23.566055][  T289]  do_syscall_64+0x3d/0x40
[   23.570617][  T289]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.577475][  T289] RIP: 0033:0x7fb4d7a77a87
[   23.582256][  T289] 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
[   23.605545][  T289] RSP: 002b:00007ffe92d02a98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.618655][  T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb4d7a77a87
[   23.636372][  T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe92d02b50
[   23.650776][  T289] RBP: 00007ffe92d02b50 R08: 0000000000000000 R09: 0000000000000000
[   23.663094][  T289] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffe92d03bc0
[   23.674351][  T289] R13: 0000555557c446c0 R14: 00007ffe92d03bc0 R15: 0000000000000001
[   23.683036][  T289] ---[ end trace 4d5097d24353bf42 ]---
[   23.689237][  T289] ==================================================================
[   23.698843][  T289] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   23.704836][  T289] Write of size 4 at addr 0000000000000170 by task syz-executor619/289
[   23.713122][  T289] 
[   23.715305][  T289] CPU: 1 PID: 289 Comm: syz-executor619 Tainted: G        W         5.10.236-syzkaller #0
[   23.725015][  T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   23.734992][  T289] Call Trace:
[   23.738122][  T289]  __dump_stack+0x21/0x24
[   23.742543][  T289]  dump_stack_lvl+0x169/0x1d8
[   23.747143][  T289]  ? thaw_kernel_threads+0x220/0x220
[   23.752370][  T289]  ? show_regs_print_info+0x18/0x18
[   23.757793][  T289]  ? _raw_spin_lock+0x8e/0xe0
[   23.762291][  T289]  ? _raw_spin_trylock_bh+0x130/0x130
[   23.767723][  T289]  ? ihold+0x20/0x60
[   23.772209][  T289]  kasan_report+0xd8/0x130
[   23.776930][  T289]  ? ihold+0x20/0x60
[   23.780610][  T289]  kasan_check_range+0x280/0x290
[   23.786229][  T289]  __kasan_check_write+0x14/0x20
[   23.791168][  T289]  ihold+0x20/0x60
[   23.795073][  T289]  vfs_rmdir+0x247/0x3e0
[   23.799157][  T289]  incfs_kill_sb+0xfe/0x210
[   23.803731][  T289]  deactivate_locked_super+0xa0/0x100
[   23.809657][  T289]  deactivate_super+0xaf/0xe0
[   23.814188][  T289]  cleanup_mnt+0x446/0x500
[   23.818607][  T289]  __cleanup_mnt+0x19/0x20
[   23.822789][  T289]  task_work_run+0x127/0x190
[   23.827744][  T289]  ptrace_notify+0x212/0x250
[   23.832252][  T289]  ? do_notify_parent+0x7e0/0x7e0
[   23.837412][  T289]  ? user_path_at_empty+0x43/0x50
[   23.842648][  T289]  ? __x64_sys_umount+0x125/0x160
[   23.848209][  T289]  ? path_umount+0xe60/0xe60
[   23.853275][  T289]  syscall_exit_work+0x6e/0x140
[   23.858588][  T289]  syscall_exit_to_user_mode+0x5b/0x90
[   23.864380][  T289]  do_syscall_64+0x3d/0x40
[   23.869226][  T289]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.875083][  T289] RIP: 0033:0x7fb4d7a77a87
[   23.881208][  T289] 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
[   23.902530][  T289] RSP: 002b:00007ffe92d02a98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.911230][  T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb4d7a77a87
[   23.920247][  T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe92d02b50
[   23.929190][  T289] RBP: 00007ffe92d02b50 R08: 0000000000000000 R09: 0000000000000000
[   23.938040][  T289] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffe92d03bc0
[   23.947642][  T289] R13: 0000555557c446c0 R14: 00007ffe92d03bc0 R15: 0000000000000001
[   23.956712][  T289] ==================================================================
[   23.966261][  T289] Disabling lock debugging due to kernel taint
[   23.975907][  T289] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   23.983878][  T289] #PF: supervisor write access in kernel mode
[   23.992222][  T289] #PF: error_code(0x0002) - not-present page
[   23.999624][  T289] PGD 0 P4D 0 
[   24.003495][  T289] Oops: 0002 [#1] PREEMPT SMP KASAN
[   24.009606][  T289] CPU: 1 PID: 289 Comm: syz-executor619 Tainted: G    B   W         5.10.236-syzkaller #0
[   24.021449][  T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
[   24.036702][  T289] RIP: 0010:ihold+0x26/0x60
[   24.041988][  T289] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 41 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 c1
[   24.073603][  T289] RSP: 0018:ffffc90000b77c28 EFLAGS: 00010246
[   24.080005][  T289] RAX: ffff88810aefe200 RBX: 0000000000000000 RCX: 0000000000000286
[   24.091034][  T289] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   24.101125][  T289] RBP: ffffc90000b77c38 R08: 0000000000000004 R09: 0000000000000003
[   24.112905][  T289] R10: fffffbfff0d8e448 R11: 1ffffffff0d8e448 R12: 1ffff1102125364a
[   24.124029][  T289] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.132062][  T289] FS:  0000555557c43380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   24.141588][  T289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.150478][  T289] CR2: 0000000000000170 CR3: 0000000100bc6000 CR4: 00000000003506a0
[   24.158985][  T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.170472][  T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.179454][  T289] Call Trace:
[   24.183157][  T289]  vfs_rmdir+0x247/0x3e0
[   24.188304][  T289]  incfs_kill_sb+0xfe/0x210
[   24.193284][  T289]  deactivate_locked_super+0xa0/0x100
[   24.199390][  T289]  deactivate_super+0xaf/0xe0
[   24.204506][  T289]  cleanup_mnt+0x446/0x500
[   24.210942][  T289]  __cleanup_mnt+0x19/0x20
[   24.217921][  T289]  task_work_run+0x127/0x190
[   24.223489][  T289]  ptrace_notify+0x212/0x250
[   24.229247][  T289]  ? do_notify_parent+0x7e0/0x7e0
[   24.234628][  T289]  ? user_path_at_empty+0x43/0x50
[   24.241068][  T289]  ? __x64_sys_umount+0x125/0x160
[   24.247653][  T289]  ? path_umount+0xe60/0xe60
[   24.258801][  T289]  syscall_exit_work+0x6e/0x140
[   24.264935][  T289]  syscall_exit_to_user_mode+0x5b/0x90
[   24.275008][  T289]  do_syscall_64+0x3d/0x40
[   24.279971][  T289]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   24.287886][  T289] RIP: 0033:0x7fb4d7a77a87
[   24.292758][  T289] 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
[   24.316164][  T289] RSP: 002b:00007ffe92d02a98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   24.327114][  T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fb4d7a77a87
[   24.336369][  T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe92d02b50
[   24.347537][  T289] RBP: 00007ffe92d02b50 R08: 0000000000000000 R09: 0000000000000000
[   24.356282][  T289] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffe92d03bc0
[   24.365881][  T289] R13: 0000555557c446c0 R14: 00007ffe92d03bc0 R15: 0000000000000001
[   24.375247][  T289] Modules linked in:
[   24.379686][  T289] CR2: 0000000000000170
[   24.384285][  T289] ---[ end trace 4d5097d24353bf43 ]---
[   24.390212][  T289] RIP: 0010:ihold+0x26/0x60
[   24.395410][  T289] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 41 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 c1
[   24.420760][  T289] RSP: 0018:ffffc90000b77c28 EFLAGS: 00010246
[   24.427910][  T289] RAX: ffff88810aefe200 RBX: 0000000000000000 RCX: 0000000000000286
[   24.437739][  T289] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   24.447392][  T289] RBP: ffffc90000b77c38 R08: 0000000000000004 R09: 0000000000000003
[   24.456401][  T289] R10: fffffbfff0d8e448 R11: 1ffffffff0d8e448 R12: 1ffff1102125364a
[   24.466370][  T289] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.474945][  T289] FS:  0000555557c43380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   24.484333][  T289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.496696][  T289] CR2: 0000000000000170 CR3: 0000000100bc6000 CR4: 00000000003506a0
[   24.508071][  T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.516585][  T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.525293][  T289] Kernel panic - not syncing: Fatal exception
[   24.533163][  T289] Kernel Offset: disabled
[   24.539420][  T289] Rebooting in 86400 seconds..