./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1583637057

<...>
Warning: Permanently added '10.128.0.239' (ED25519) to the list of known hosts.
execve("./syz-executor1583637057", ["./syz-executor1583637057"], 0x7ffe64348f90 /* 10 vars */) = 0
brk(NULL)                               = 0x555588509000
brk(0x555588509d00)                     = 0x555588509d00
arch_prctl(ARCH_SET_FS, 0x555588509380) = 0
set_tid_address(0x555588509650)         = 289
set_robust_list(0x555588509660, 24)     = 0
rseq(0x555588509ca0, 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-executor1583637057", 4096) = 28
getrandom("\x10\xcf\xf2\xf9\xe7\xca\x1e\xbb", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555588509d00
brk(0x55558852ad00)                     = 0x55558852ad00
brk(0x55558852b000)                     = 0x55558852b000
mprotect(0x7f57b18ca000, 16384, PROT_READ) = 0
mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000
mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000
mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000
mkdir("./syzkaller.VgI3EV", 0700)       = 0
chmod("./syzkaller.VgI3EV", 0777)       = 0
chdir("./syzkaller.VgI3EV")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555588509650) = 290
./strace-static-x86_64: Process 290 attached
[pid   290] set_robust_list(0x555588509660, 24) = 0
[pid   290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   290] getppid()                   = 0
[pid   290] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   290] unshare(CLONE_NEWNS)        = 0
[pid   290] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   290] unshare(CLONE_NEWCGROUP)    = 0
[pid   290] unshare(CLONE_NEWUTS)       = 0
[pid   290] unshare(CLONE_SYSVSEM)      = 0
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] getpid()                    = 1
[pid   290] 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   290] 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   290] unshare(CLONE_NEWNET)       = 0
[pid   290] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   290] write(3, "0 65535", 7)      = 7
[pid   290] close(3)                    = 0
[pid   290] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   290] write(3, "100000", 6)       = 6
[pid   290] close(3)                    = 0
[pid   290] mkdir("./syz-tmp", 0777)    = 0
[pid   290] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   290] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   290] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   290] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   290] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   290] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   290] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] 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   290] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   290] 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   290] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   290] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   290] chdir("/")                  = 0
[   22.432600][   T24] audit: type=1400 audit(1739187800.559:66): avc:  denied  { execmem } for  pid=289 comm="syz-executor158" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.442995][   T24] audit: type=1400 audit(1739187800.569:67): avc:  denied  { mounton } for  pid=290 comm="syz-executor158" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   290] umount2("./pivot", MNT_DETACH) = 0
[pid   290] chroot("./newroot")         = 0
[pid   290] chdir("/")                  = 0
[pid   290] mkdir("/dev/gadgetfs", 0777) = 0
[pid   290] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   290] mkdir("/dev/binderfs", 0777) = 0
[pid   290] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   290] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   290] mkdir("./0", 0777)          = 0
[pid   290] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555588509650) = 2
./strace-static-x86_64: Process 291 attached
[pid   291] set_robust_list(0x555588509660, 24) = 0
[pid   291] chdir("./0")                = 0
[pid   291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   291] setpgid(0, 0)               = 0
[pid   291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   291] write(3, "1000", 4)         = 4
[pid   291] close(3)                    = 0
[pid   291] symlink("/dev/binderfs", "./binderfs") = 0
[pid   291] write(1, "executing program\n", 18executing program
) = 18
[pid   291] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   291] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[   22.463766][   T24] audit: type=1400 audit(1739187800.589:68): avc:  denied  { mounton } for  pid=290 comm="syz-executor158" path="/root/syzkaller.VgI3EV/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   22.487998][   T24] audit: type=1400 audit(1739187800.589:69): avc:  denied  { mount } for  pid=290 comm="syz-executor158" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   22.490368][  T290] request_module fs-gadgetfs succeeded, but still no fs?
[pid   291] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0
[pid   291] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   291] exit_group(0)               = ?
[pid   291] +++ exited with 0 +++
[pid   290] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid   290] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   290] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   290] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   290] getdents64(3, 0x55558850a6f0 /* 6 entries */, 32768) = 176
[pid   290] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   290] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   290] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   290] getdents64(4, 0x555588512730 /* 2 entries */, 32768) = 48
[pid   290] getdents64(4, 0x555588512730 /* 0 entries */, 32768) = 0
[pid   290] close(4)                    = 0
[pid   290] rmdir("./0/.incomplete")    = 0
[pid   290] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   290] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   290] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   290] getdents64(4, 0x555588512730 /* 2 entries */, 32768) = 48
[pid   290] getdents64(4, 0x555588512730 /* 0 entries */, 32768) = 0
[pid   290] close(4)                    = 0
[pid   290] rmdir("./0/.index")         = 0
[   22.509819][   T24] audit: type=1400 audit(1739187800.599:70): avc:  denied  { mounton } for  pid=290 comm="syz-executor158" path="/root/syzkaller.VgI3EV/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
[   22.526551][  T291] incfs: ino conflict with backing FS 9
[   22.541747][   T24] audit: type=1400 audit(1739187800.599:71): avc:  denied  { mount } for  pid=290 comm="syz-executor158" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   22.568807][   T24] audit: type=1400 audit(1739187800.599:72): avc:  denied  { mounton } for  pid=290 comm="syz-executor158" path="/root/syzkaller.VgI3EV/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
[   22.568940][  T290] ------------[ cut here ]------------
[   22.595279][   T24] audit: type=1400 audit(1739187800.599:73): avc:  denied  { mounton } for  pid=290 comm="syz-executor158" path="/root/syzkaller.VgI3EV/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=13774 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   22.600821][  T290] WARNING: CPU: 0 PID: 290 at fs/inode.c:304 drop_nlink+0xc1/0x110
[   22.628339][   T24] audit: type=1400 audit(1739187800.599:74): avc:  denied  { unmount } for  pid=290 comm="syz-executor158" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   22.636044][  T290] Modules linked in:
[   22.655512][   T24] audit: type=1400 audit(1739187800.619:75): avc:  denied  { mounton } for  pid=290 comm="syz-executor158" path="/dev/gadgetfs" dev="devtmpfs" ino=509 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   22.659194][  T290] CPU: 0 PID: 290 Comm: syz-executor158 Not tainted 5.10.234-syzkaller-00148-g6686f2996d23 #0
[   22.691854][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   22.701767][  T290] RIP: 0010:drop_nlink+0xc1/0x110
[   22.706596][  T290] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 67 cb f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 0f 2a b3 ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   22.726045][  T290] RSP: 0018:ffffc90000b27be8 EFLAGS: 00010293
[   22.731924][  T290] RAX: ffffffff81b79551 RBX: 0000000000000000 RCX: ffff88810ba73b40
[   22.739764][  T290] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   22.747563][  T290] RBP: ffffc90000b27c10 R08: ffffffff81b794d4 R09: 0000000000000003
[   22.755356][  T290] R10: fffff52000164f6c R11: dffffc0000000001 R12: dffffc0000000000
[   22.763191][  T290] R13: 1ffff11021a5e511 R14: ffff88810d2f2840 R15: ffff88810d2f2888
[   22.770994][  T290] FS:  0000555588509380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   22.779771][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.786197][  T290] CR2: 00005594955647f8 CR3: 000000010ca48000 CR4: 00000000003506b0
[   22.793983][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.801812][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.809629][  T290] Call Trace:
[   22.812733][  T290]  ? show_regs+0x58/0x60
[   22.816832][  T290]  ? __warn+0x160/0x2f0
[   22.820811][  T290]  ? drop_nlink+0xc1/0x110
[   22.825053][  T290]  ? report_bug+0x3d9/0x5b0
[   22.829474][  T290]  ? drop_nlink+0xc1/0x110
[   22.833649][  T290]  ? handle_bug+0x41/0x70
[   22.837840][  T290]  ? exc_invalid_op+0x1b/0x50
[   22.842325][  T290]  ? asm_exc_invalid_op+0x12/0x20
[   22.847217][  T290]  ? drop_nlink+0x44/0x110
[   22.851444][  T290]  ? drop_nlink+0xc1/0x110
[   22.855688][  T290]  ? drop_nlink+0xc1/0x110
[   22.859967][  T290]  ? drop_nlink+0xc1/0x110
[   22.864198][  T290]  shmem_rmdir+0x59/0x90
[   22.868303][  T290]  vfs_rmdir+0x2b7/0x3f0
[   22.872366][  T290]  incfs_kill_sb+0x108/0x220
[   22.876808][  T290]  deactivate_locked_super+0xad/0x110
[   22.881991][  T290]  deactivate_super+0xbe/0xf0
[   22.886527][  T290]  cleanup_mnt+0x45c/0x510
[   22.890758][  T290]  __cleanup_mnt+0x19/0x20
[   22.895025][  T290]  task_work_run+0x129/0x190
[   22.899469][  T290]  ptrace_notify+0x29e/0x350
[   22.903862][  T290]  ? do_notify_parent+0xa10/0xa10
[   22.908771][  T290]  ? user_path_at_empty+0x40/0x50
[   22.913583][  T290]  ? __x64_sys_umount+0x122/0x170
[   22.918473][  T290]  ? path_umount+0xea0/0xea0
[   22.922872][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   22.928280][  T290]  do_syscall_64+0x40/0x70
[   22.932504][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   22.938256][  T290] RIP: 0033:0x7f57b1857a87
[   22.942483][  T290] 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
[   22.961956][  T290] RSP: 002b:00007ffe848a35d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   22.970182][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f57b1857a87
[   22.977998][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe848a3690
[   22.985805][  T290] RBP: 00007ffe848a3690 R08: 0000000000000000 R09: 0000000000000000
[   22.993608][  T290] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe848a4700
[   23.001461][  T290] R13: 000055558850a6c0 R14: 00007ffe848a4700 R15: 0000000000000001
[   23.009244][  T290] ---[ end trace ec73ed3e023739cb ]---
[   23.014549][  T290] ==================================================================
[   23.022423][  T290] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   23.028496][  T290] Write of size 4 at addr 0000000000000170 by task syz-executor158/290
[   23.036559][  T290] 
[   23.038737][  T290] CPU: 0 PID: 290 Comm: syz-executor158 Tainted: G        W         5.10.234-syzkaller-00148-g6686f2996d23 #0
[   23.050186][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   23.060080][  T290] Call Trace:
[   23.063213][  T290]  dump_stack_lvl+0x1e2/0x24b
[   23.067720][  T290]  ? panic+0x812/0x812
[   23.071626][  T290]  ? bfq_pos_tree_add_move+0x43b/0x43b
[   23.076922][  T290]  ? _raw_spin_lock+0xa4/0x1b0
[   23.081523][  T290]  ? _raw_spin_trylock_bh+0x190/0x190
[   23.086733][  T290]  kasan_report+0x167/0x1c0
[   23.091068][  T290]  ? ihold+0x20/0x60
[   23.094815][  T290]  ? ihold+0x20/0x60
[   23.098536][  T290]  kasan_check_range+0x293/0x2a0
[   23.103312][  T290]  __kasan_check_write+0x14/0x20
[   23.108086][  T290]  ihold+0x20/0x60
[   23.111639][  T290]  vfs_rmdir+0x200/0x3f0
[   23.115720][  T290]  incfs_kill_sb+0x108/0x220
[   23.120147][  T290]  deactivate_locked_super+0xad/0x110
[   23.125352][  T290]  deactivate_super+0xbe/0xf0
[   23.129885][  T290]  cleanup_mnt+0x45c/0x510
[   23.134122][  T290]  __cleanup_mnt+0x19/0x20
[   23.138371][  T290]  task_work_run+0x129/0x190
[   23.142802][  T290]  ptrace_notify+0x29e/0x350
[   23.147223][  T290]  ? do_notify_parent+0xa10/0xa10
[   23.152085][  T290]  ? user_path_at_empty+0x40/0x50
[   23.156942][  T290]  ? __x64_sys_umount+0x122/0x170
[   23.161801][  T290]  ? path_umount+0xea0/0xea0
[   23.166230][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.171611][  T290]  do_syscall_64+0x40/0x70
[   23.175864][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.181593][  T290] RIP: 0033:0x7f57b1857a87
[   23.185845][  T290] 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
[   23.205286][  T290] RSP: 002b:00007ffe848a35d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   23.213878][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f57b1857a87
[   23.221687][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe848a3690
[   23.229498][  T290] RBP: 00007ffe848a3690 R08: 0000000000000000 R09: 0000000000000000
[   23.237309][  T290] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe848a4700
[   23.245121][  T290] R13: 000055558850a6c0 R14: 00007ffe848a4700 R15: 0000000000000001
[   23.252932][  T290] ==================================================================
[   23.260828][  T290] Disabling lock debugging due to kernel taint
[   23.266933][  T290] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   23.274466][  T290] #PF: supervisor write access in kernel mode
[   23.280362][  T290] #PF: error_code(0x0002) - not-present page
[   23.286175][  T290] PGD 0 P4D 0 
[   23.289393][  T290] Oops: 0002 [#1] PREEMPT SMP KASAN
[   23.294424][  T290] CPU: 0 PID: 290 Comm: syz-executor158 Tainted: G    B   W         5.10.234-syzkaller-00148-g6686f2996d23 #0
[   23.305876][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   23.315787][  T290] RIP: 0010:ihold+0x25/0x60
[   23.320112][  T290] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 21 22 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 50 c3 f0 ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 a4 25 b3
[   23.339566][  T290] RSP: 0018:ffffc90000b27c28 EFLAGS: 00010246
[   23.345455][  T290] RAX: ffff88810ba73b00 RBX: 0000000000000001 RCX: ffff88810ba73b40
[   23.353263][  T290] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   23.361079][  T290] RBP: ffffc90000b27c38 R08: ffffffff813e2b8b R09: 0000000000000003
[   23.368889][  T290] R10: fffffbfff0e11248 R11: dffffc0000000001 R12: dffffc0000000000
[   23.376711][  T290] R13: ffff88811c392220 R14: 0000000000000000 R15: 0000000000000000
[   23.384524][  T290] FS:  0000555588509380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   23.393279][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.399703][  T290] CR2: 0000000000000170 CR3: 000000010ca48000 CR4: 00000000003506b0
[   23.407515][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.415322][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.423131][  T290] Call Trace:
[   23.426274][  T290]  ? __die_body+0x62/0xb0
[   23.430442][  T290]  ? __die+0x7e/0x90
[   23.434163][  T290]  ? no_context+0x9f9/0xd20
[   23.438501][  T290]  ? sched_clock+0x3a/0x40
[   23.442751][  T290]  ? is_prefetch+0x5c0/0x5c0
[   23.447181][  T290]  ? __irq_exit_rcu+0x40/0x150
[   23.451779][  T290]  ? irq_exit_rcu+0x9/0x10
[   23.456035][  T290]  ? sysvec_apic_timer_interrupt+0xcb/0xe0
[   23.461688][  T290]  ? __bad_area_nosemaphore+0xc4/0x430
[   23.466972][  T290]  ? bad_area_nosemaphore+0x2d/0x40
[   23.472005][  T290]  ? exc_page_fault+0x3df/0x5b0
[   23.476689][  T290]  ? asm_exc_page_fault+0x1e/0x30
[   23.481564][  T290]  ? check_panic_on_warn+0x5b/0xb0
[   23.486498][  T290]  ? ihold+0x25/0x60
[   23.490230][  T290]  ? ihold+0x20/0x60
[   23.493960][  T290]  vfs_rmdir+0x200/0x3f0
[   23.498039][  T290]  incfs_kill_sb+0x108/0x220
[   23.502467][  T290]  deactivate_locked_super+0xad/0x110
[   23.507673][  T290]  deactivate_super+0xbe/0xf0
[   23.512188][  T290]  cleanup_mnt+0x45c/0x510
[   23.516440][  T290]  __cleanup_mnt+0x19/0x20
[   23.520691][  T290]  task_work_run+0x129/0x190
[   23.525116][  T290]  ptrace_notify+0x29e/0x350
[   23.529542][  T290]  ? do_notify_parent+0xa10/0xa10
[   23.534403][  T290]  ? user_path_at_empty+0x40/0x50
[   23.539263][  T290]  ? __x64_sys_umount+0x122/0x170
[   23.544122][  T290]  ? path_umount+0xea0/0xea0
[   23.548552][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.553931][  T290]  do_syscall_64+0x40/0x70
[   23.558185][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.563911][  T290] RIP: 0033:0x7f57b1857a87
[   23.568165][  T290] 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
[   23.587605][  T290] RSP: 002b:00007ffe848a35d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   23.595849][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f57b1857a87
[   23.603660][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe848a3690
[   23.611471][  T290] RBP: 00007ffe848a3690 R08: 0000000000000000 R09: 0000000000000000
[   23.619281][  T290] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe848a4700
[   23.627092][  T290] R13: 000055558850a6c0 R14: 00007ffe848a4700 R15: 0000000000000001
[   23.634903][  T290] Modules linked in:
[   23.638652][  T290] CR2: 0000000000000170
[   23.642639][  T290] ---[ end trace ec73ed3e023739cc ]---
[   23.647935][  T290] RIP: 0010:ihold+0x25/0x60
[   23.652265][  T290] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 21 22 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 50 c3 f0 ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 a4 25 b3
[   23.671704][  T290] RSP: 0018:ffffc90000b27c28 EFLAGS: 00010246
[   23.677606][  T290] RAX: ffff88810ba73b00 RBX: 0000000000000001 RCX: ffff88810ba73b40
[   23.685418][  T290] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   23.693242][  T290] RBP: ffffc90000b27c38 R08: ffffffff813e2b8b R09: 0000000000000003
[   23.701043][  T290] R10: fffffbfff0e11248 R11: dffffc0000000001 R12: dffffc0000000000
[   23.708854][  T290] R13: ffff88811c392220 R14: 0000000000000000 R15: 0000000000000000
[   23.716843][  T290] FS:  0000555588509380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   23.725612][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.732025][  T290] CR2: 0000000000000170 CR3: 000000010ca48000 CR4: 00000000003506b0
[   23.739840][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.747648][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.755458][  T290] Kernel panic - not syncing: Fatal exception
[   23.761545][  T290] Kernel Offset: disabled
[   23.765667][  T290] Rebooting in 86400 seconds..