./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1906257572

<...>
Warning: Permanently added '10.128.1.184' (ED25519) to the list of known hosts.
execve("./syz-executor1906257572", ["./syz-executor1906257572"], 0x7ffe5df44be0 /* 10 vars */) = 0
brk(NULL)                               = 0x55558b8aa000
brk(0x55558b8aad00)                     = 0x55558b8aad00
arch_prctl(ARCH_SET_FS, 0x55558b8aa380) = 0
set_tid_address(0x55558b8aa650)         = 297
set_robust_list(0x55558b8aa660, 24)     = 0
rseq(0x55558b8aaca0, 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-executor1906257572", 4096) = 28
getrandom("\xf0\xc5\xd6\xea\x55\x67\xb6\x4e", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558b8aad00
brk(0x55558b8cbd00)                     = 0x55558b8cbd00
brk(0x55558b8cc000)                     = 0x55558b8cc000
mprotect(0x7fee1c267000, 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.06jyHV", 0700)       = 0
chmod("./syzkaller.06jyHV", 0777)       = 0
chdir("./syzkaller.06jyHV")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558b8aa650) = 298
./strace-static-x86_64: Process 298 attached
[pid   298] set_robust_list(0x55558b8aa660, 24) = 0
[pid   298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   298] getppid()                   = 0
[pid   298] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   298] unshare(CLONE_NEWNS)        = 0
[pid   298] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   298] unshare(CLONE_NEWCGROUP)    = 0
[pid   298] unshare(CLONE_NEWUTS)       = 0
[pid   298] unshare(CLONE_SYSVSEM)      = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] getpid()                    = 1
[pid   298] 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   298] 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   298] unshare(CLONE_NEWNET)       = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "0 65535", 7)      = 7
[pid   298] close(3)                    = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "100000", 6)       = 6
[pid   298] close(3)                    = 0
[pid   298] mkdir("./syz-tmp", 0777)    = 0
[   25.128316][   T30] audit: type=1400 audit(1737961499.160:66): avc:  denied  { execmem } for  pid=297 comm="syz-executor190" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   25.148447][   T30] audit: type=1400 audit(1737961499.180:67): avc:  denied  { mounton } for  pid=298 comm="syz-executor190" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   298] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   298] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   298] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   298] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   298] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   298] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   298] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] 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   298] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   298] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   298] chdir("/")                  = 0
[pid   298] umount2("./pivot", MNT_DETACH) = 0
[pid   298] chroot("./newroot")         = 0
[pid   298] chdir("/")                  = 0
[pid   298] mkdir("/dev/gadgetfs", 0777) = 0
[pid   298] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   298] mkdir("/dev/binderfs", 0777) = 0
[   25.175760][   T30] audit: type=1400 audit(1737961499.210:68): avc:  denied  { mounton } for  pid=298 comm="syz-executor190" path="/root/syzkaller.06jyHV/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   25.200704][   T30] audit: type=1400 audit(1737961499.210:69): avc:  denied  { mount } for  pid=298 comm="syz-executor190" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   298] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   298] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   298] mkdir("./0", 0777)          = 0
[pid   298] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558b8aa650) = 2
./strace-static-x86_64: Process 300 attached
[pid   300] set_robust_list(0x55558b8aa660, 24) = 0
[pid   300] chdir("./0")                = 0
[pid   300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   300] setpgid(0, 0)               = 0
[pid   300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   300] write(3, "1000", 4)         = 4
[pid   300] close(3)                    = 0
[pid   300] symlink("/dev/binderfs", "./binderfs") = 0
[pid   300] write(1, "executing program\n", 18executing program
) = 18
[pid   300] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   300] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   300] mount("./file0", "./file0", "incremental-fs", MS_RDONLY, NULL) = 0
[pid   300] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(9)                    = -1 EBADF (Bad file descriptor)
[   25.203821][  T298] request_module fs-gadgetfs succeeded, but still no fs?
[   25.222666][   T30] audit: type=1400 audit(1737961499.220:70): avc:  denied  { mounton } for  pid=298 comm="syz-executor190" path="/root/syzkaller.06jyHV/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
[   25.222699][   T30] audit: type=1400 audit(1737961499.220:71): avc:  denied  { mount } for  pid=298 comm="syz-executor190" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[pid   300] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   300] exit_group(0)               = ?
[pid   300] +++ exited with 0 +++
[pid   298] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[pid   298] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   298] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   298] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   298] getdents64(3, 0x55558b8ab6f0 /* 6 entries */, 32768) = 176
[pid   298] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   298] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   298] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   298] getdents64(4, 0x55558b8b3730 /* 2 entries */, 32768) = 48
[pid   298] getdents64(4, 0x55558b8b3730 /* 0 entries */, 32768) = 0
[pid   298] close(4)                    = 0
[pid   298] rmdir("./0/.incomplete")    = 0
[pid   298] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   298] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   298] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   298] getdents64(4, 0x55558b8b3730 /* 2 entries */, 32768) = 48
[pid   298] getdents64(4, 0x55558b8b3730 /* 0 entries */, 32768) = 0
[pid   298] close(4)                    = 0
[pid   298] rmdir("./0/.index")         = 0
[   25.222724][   T30] audit: type=1400 audit(1737961499.220:72): avc:  denied  { mounton } for  pid=298 comm="syz-executor190" path="/root/syzkaller.06jyHV/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
[   25.242007][  T300] incfs: ino conflict with backing FS 8
[   25.255320][   T30] audit: type=1400 audit(1737961499.220:73): avc:  denied  { mounton } for  pid=298 comm="syz-executor190" path="/root/syzkaller.06jyHV/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=492 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   25.336367][  T298] ------------[ cut here ]------------
[   25.341639][  T298] WARNING: CPU: 0 PID: 298 at fs/inode.c:307 drop_nlink+0xc1/0x110
[   25.344576][   T30] audit: type=1400 audit(1737961499.220:74): avc:  denied  { unmount } for  pid=298 comm="syz-executor190" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   25.350026][  T298] Modules linked in:
[   25.368960][   T30] audit: type=1400 audit(1737961499.230:75): avc:  denied  { mounton } for  pid=298 comm="syz-executor190" path="/dev/gadgetfs" dev="devtmpfs" ino=514 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.372629][  T298] 
[   25.397585][  T298] CPU: 0 PID: 298 Comm: syz-executor190 Not tainted 5.15.176-syzkaller-00972-g829d9f138569 #0
[   25.407696][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   25.417582][  T298] RIP: 0010:drop_nlink+0xc1/0x110
[   25.422387][  T298] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 97 f4 f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 6f 8d ae ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   25.441895][  T298] RSP: 0018:ffffc900009b7bc8 EFLAGS: 00010293
[   25.447762][  T298] RAX: ffffffff81c1def1 RBX: 0000000000000000 RCX: ffff88810c332780
[   25.455656][  T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   25.463531][  T298] RBP: ffffc900009b7bf0 R08: ffffffff81c1de74 R09: 0000000000000003
[   25.471393][  T298] R10: fffff52000136f68 R11: dffffc0000000001 R12: dffffc0000000000
[   25.479187][  T298] R13: 1ffff110234d8a02 R14: ffff88811a6c4fc8 R15: ffff88811a6c5010
[   25.487027][  T298] FS:  000055558b8aa380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   25.495871][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.502238][  T298] CR2: 000056219081d338 CR3: 000000010c6bf000 CR4: 00000000003506b0
[   25.510176][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.517974][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.525959][  T298] Call Trace:
[   25.529018][  T298]  <TASK>
[   25.531864][  T298]  ? show_regs+0x58/0x60
[   25.536080][  T298]  ? __warn+0x160/0x2f0
[   25.540022][  T298]  ? drop_nlink+0xc1/0x110
[   25.544272][  T298]  ? report_bug+0x3d9/0x5b0
[   25.548655][  T298]  ? drop_nlink+0xc1/0x110
[   25.552868][  T298]  ? handle_bug+0x41/0x70
[   25.557096][  T298]  ? exc_invalid_op+0x1b/0x50
[   25.561549][  T298]  ? asm_exc_invalid_op+0x1b/0x20
[   25.566467][  T298]  ? drop_nlink+0x44/0x110
[   25.570911][  T298]  ? drop_nlink+0xc1/0x110
[   25.575201][  T298]  ? drop_nlink+0xc1/0x110
[   25.579435][  T298]  ? drop_nlink+0xc1/0x110
[   25.583656][  T298]  shmem_rmdir+0x59/0x90
[   25.587881][  T298]  vfs_rmdir+0x324/0x470
[   25.591926][  T298]  incfs_kill_sb+0x113/0x230
[   25.596379][  T298]  deactivate_locked_super+0xad/0x110
[   25.601675][  T298]  deactivate_super+0xbe/0xf0
[   25.606219][  T298]  cleanup_mnt+0x45c/0x510
[   25.610437][  T298]  __cleanup_mnt+0x19/0x20
[   25.614917][  T298]  task_work_run+0x129/0x190
[   25.619249][  T298]  ptrace_notify+0x29e/0x350
[   25.623714][  T298]  ? do_notify_parent+0xa30/0xa30
[   25.628599][  T298]  ? user_path_at_empty+0x14e/0x1a0
[   25.633577][  T298]  ? __x64_sys_umount+0x122/0x170
[   25.638481][  T298]  ? path_umount+0xea0/0xea0
[   25.642856][  T298]  syscall_exit_to_user_mode+0xa3/0x160
[   25.648275][  T298]  do_syscall_64+0x47/0xb0
[   25.652491][  T298]  ? clear_bhb_loop+0x35/0x90
[   25.657036][  T298]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.662731][  T298] RIP: 0033:0x7fee1c1f4a47
[   25.667082][  T298] 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
[   25.686462][  T298] RSP: 002b:00007fff2cd5ac68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.694929][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fee1c1f4a47
[   25.703068][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2cd5ad20
[   25.711027][  T298] RBP: 00007fff2cd5ad20 R08: 0000000000000000 R09: 0000000000000000
[   25.718790][  T298] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff2cd5bd90
[   25.726634][  T298] R13: 000055558b8ab6c0 R14: 00007fff2cd5bd90 R15: 0000000000000001
[   25.734401][  T298]  </TASK>
[   25.737313][  T298] ---[ end trace d4915c64b7b0a9b5 ]---
[   25.742609][  T298] ==================================================================
[   25.750539][  T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   25.756611][  T298] Write of size 4 at addr 0000000000000170 by task syz-executor190/298
[   25.764681][  T298] 
[   25.766852][  T298] CPU: 0 PID: 298 Comm: syz-executor190 Tainted: G        W         5.15.176-syzkaller-00972-g829d9f138569 #0
[   25.778308][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   25.788205][  T298] Call Trace:
[   25.791329][  T298]  <TASK>
[   25.794108][  T298]  dump_stack_lvl+0x151/0x1c0
[   25.798622][  T298]  ? io_uring_drop_tctx_refs+0x190/0x190
[   25.804094][  T298]  ? _raw_spin_lock+0xa4/0x1b0
[   25.808778][  T298]  ? _raw_spin_trylock_bh+0x190/0x190
[   25.813983][  T298]  kasan_report+0x16f/0x1c0
[   25.818536][  T298]  ? ihold+0x20/0x60
[   25.822262][  T298]  ? ihold+0x20/0x60
[   25.825995][  T298]  kasan_check_range+0x293/0x2a0
[   25.830969][  T298]  __kasan_check_write+0x14/0x20
[   25.835732][  T298]  ihold+0x20/0x60
[   25.839292][  T298]  vfs_rmdir+0x201/0x470
[   25.843376][  T298]  incfs_kill_sb+0x113/0x230
[   25.847802][  T298]  deactivate_locked_super+0xad/0x110
[   25.853035][  T298]  deactivate_super+0xbe/0xf0
[   25.857516][  T298]  cleanup_mnt+0x45c/0x510
[   25.861928][  T298]  __cleanup_mnt+0x19/0x20
[   25.866176][  T298]  task_work_run+0x129/0x190
[   25.870687][  T298]  ptrace_notify+0x29e/0x350
[   25.875109][  T298]  ? do_notify_parent+0xa30/0xa30
[   25.879970][  T298]  ? user_path_at_empty+0x14e/0x1a0
[   25.885008][  T298]  ? __x64_sys_umount+0x122/0x170
[   25.889866][  T298]  ? path_umount+0xea0/0xea0
[   25.894294][  T298]  syscall_exit_to_user_mode+0xa3/0x160
[   25.899675][  T298]  do_syscall_64+0x47/0xb0
[   25.903926][  T298]  ? clear_bhb_loop+0x35/0x90
[   25.908537][  T298]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.914267][  T298] RIP: 0033:0x7fee1c1f4a47
[   25.918522][  T298] 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
[   25.937962][  T298] RSP: 002b:00007fff2cd5ac68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.946205][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fee1c1f4a47
[   25.954208][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2cd5ad20
[   25.962087][  T298] RBP: 00007fff2cd5ad20 R08: 0000000000000000 R09: 0000000000000000
[   25.969900][  T298] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff2cd5bd90
[   25.977710][  T298] R13: 000055558b8ab6c0 R14: 00007fff2cd5bd90 R15: 0000000000000001
[   25.985524][  T298]  </TASK>
[   25.988386][  T298] ==================================================================
[   25.996372][  T298] Disabling lock debugging due to kernel taint
[   26.002490][  T298] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   26.010104][  T298] #PF: supervisor write access in kernel mode
[   26.016100][  T298] #PF: error_code(0x0002) - not-present page
[   26.021908][  T298] PGD 0 P4D 0 
[   26.025132][  T298] Oops: 0002 [#1] PREEMPT SMP KASAN
[   26.030157][  T298] CPU: 0 PID: 298 Comm: syz-executor190 Tainted: G    B   W         5.15.176-syzkaller-00972-g829d9f138569 #0
[   26.041604][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
[   26.051500][  T298] RIP: 0010:ihold+0x25/0x60
[   26.055839][  T298] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 81 85 ae ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 80 ec 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 04 89 ae
[   26.075282][  T298] RSP: 0018:ffffc900009b7c08 EFLAGS: 00010246
[   26.081185][  T298] RAX: ffff88810c332700 RBX: 0000000000000001 RCX: ffff88810c332780
[   26.088995][  T298] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   26.097327][  T298] RBP: ffffc900009b7c18 R08: ffffffff8141a99b R09: 0000000000000003
[   26.105140][  T298] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   26.113102][  T298] R13: ffff888121546880 R14: 0000000000000000 R15: 1ffff110242a8d16
[   26.120988][  T298] FS:  000055558b8aa380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   26.129751][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.136169][  T298] CR2: 0000000000000170 CR3: 000000010c6bf000 CR4: 00000000003506b0
[   26.143993][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.151796][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.159608][  T298] Call Trace:
[   26.162732][  T298]  <TASK>
[   26.165509][  T298]  ? __die_body+0x62/0xb0
[   26.169675][  T298]  ? __die+0x7e/0x90
[   26.173403][  T298]  ? page_fault_oops+0x7f9/0xa90
[   26.178181][  T298]  ? __kasan_check_write+0x14/0x20
[   26.183128][  T298]  ? kernelmode_fixup_or_oops+0xd0/0xd0
[   26.188507][  T298]  ? __schedule+0xcd4/0x1590
[   26.192935][  T298]  ? exc_page_fault+0x510/0x7f0
[   26.197623][  T298]  ? asm_exc_page_fault+0x27/0x30
[   26.202481][  T298]  ? check_panic_on_warn+0x5b/0xb0
[   26.207617][  T298]  ? ihold+0x25/0x60
[   26.211338][  T298]  ? ihold+0x20/0x60
[   26.215066][  T298]  vfs_rmdir+0x201/0x470
[   26.219155][  T298]  incfs_kill_sb+0x113/0x230
[   26.223583][  T298]  deactivate_locked_super+0xad/0x110
[   26.229126][  T298]  deactivate_super+0xbe/0xf0
[   26.233731][  T298]  cleanup_mnt+0x45c/0x510
[   26.237983][  T298]  __cleanup_mnt+0x19/0x20
[   26.242231][  T298]  task_work_run+0x129/0x190
[   26.246660][  T298]  ptrace_notify+0x29e/0x350
[   26.251086][  T298]  ? do_notify_parent+0xa30/0xa30
[   26.255944][  T298]  ? user_path_at_empty+0x14e/0x1a0
[   26.261067][  T298]  ? __x64_sys_umount+0x122/0x170
[   26.265928][  T298]  ? path_umount+0xea0/0xea0
[   26.270355][  T298]  syscall_exit_to_user_mode+0xa3/0x160
[   26.275746][  T298]  do_syscall_64+0x47/0xb0
[   26.280075][  T298]  ? clear_bhb_loop+0x35/0x90
[   26.284588][  T298]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   26.290313][  T298] RIP: 0033:0x7fee1c1f4a47
[   26.294586][  T298] 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
[   26.314096][  T298] RSP: 002b:00007fff2cd5ac68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   26.322427][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fee1c1f4a47
[   26.330239][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2cd5ad20
[   26.338049][  T298] RBP: 00007fff2cd5ad20 R08: 0000000000000000 R09: 0000000000000000
[   26.345874][  T298] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff2cd5bd90
[   26.353676][  T298] R13: 000055558b8ab6c0 R14: 00007fff2cd5bd90 R15: 0000000000000001
[   26.361491][  T298]  </TASK>
[   26.364350][  T298] Modules linked in:
[   26.368099][  T298] CR2: 0000000000000170
[   26.372174][  T298] ---[ end trace d4915c64b7b0a9b6 ]---
[   26.377456][  T298] RIP: 0010:ihold+0x25/0x60
[   26.381898][  T298] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 81 85 ae ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 80 ec 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 04 89 ae
[   26.401349][  T298] RSP: 0018:ffffc900009b7c08 EFLAGS: 00010246
[   26.407230][  T298] RAX: ffff88810c332700 RBX: 0000000000000001 RCX: ffff88810c332780
[   26.415124][  T298] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   26.422936][  T298] RBP: ffffc900009b7c18 R08: ffffffff8141a99b R09: 0000000000000003
[   26.430749][  T298] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   26.438559][  T298] R13: ffff888121546880 R14: 0000000000000000 R15: 1ffff110242a8d16
[   26.446368][  T298] FS:  000055558b8aa380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   26.455224][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.461656][  T298] CR2: 0000000000000170 CR3: 000000010c6bf000 CR4: 00000000003506b0
[   26.469457][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.477269][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.485089][  T298] Kernel panic - not syncing: Fatal exception
[   26.491240][  T298] Kernel Offset: disabled
[   26.495459][  T298] Rebooting in 86400 seconds..