./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4249956753

<...>
Warning: Permanently added '10.128.1.151' (ED25519) to the list of known hosts.
execve("./syz-executor4249956753", ["./syz-executor4249956753"], 0x7ffddf2a3c40 /* 10 vars */) = 0
brk(NULL)                               = 0x55556d69c000
brk(0x55556d69ce00)                     = 0x55556d69ce00
arch_prctl(ARCH_SET_FS, 0x55556d69c480) = 0
set_tid_address(0x55556d69c750)         = 295
set_robust_list(0x55556d69c760, 24)     = 0
rseq(0x55556d69cda0, 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-executor4249956753", 4096) = 28
getrandom("\x1c\x92\x5f\xa5\xe4\x7d\x1d\xf4", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55556d69ce00
brk(0x55556d6bde00)                     = 0x55556d6bde00
brk(0x55556d6be000)                     = 0x55556d6be000
mprotect(0x7f559ec17000, 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
rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x7f559eb6dda0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f559eb75b90}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f559eb6dda0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f559eb75b90}, NULL, 8) = 0
mkdir("./syzkaller.YS3Y2Q", 0700)       = 0
chmod("./syzkaller.YS3Y2Q", 0777)       = 0
chdir("./syzkaller.YS3Y2Q")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556d69c750) = 296
./strace-static-x86_64: Process 296 attached
[pid   296] set_robust_list(0x55556d69c760, 24) = 0
[pid   296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   296] getppid()                   = 0
[pid   296] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   296] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   296] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   296] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   296] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   296] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   296] unshare(CLONE_NEWNS)        = 0
[pid   296] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   296] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   296] unshare(CLONE_NEWCGROUP)    = 0
[pid   296] unshare(CLONE_NEWUTS)       = 0
[pid   296] unshare(CLONE_SYSVSEM)      = 0
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   296] getpid()                    = 1
[pid   296] 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   296] 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   296] unshare(CLONE_NEWNET)       = 0
[pid   296] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   296] write(3, "0 65535", 7)      = 7
[pid   296] close(3)                    = 0
[pid   296] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   296] write(3, "100000", 6)       = 6
[pid   296] close(3)                    = 0
[pid   296] mkdir("./syz-tmp", 0777)    = 0
[pid   296] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   296] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   296] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   296] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   296] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   296] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   296] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   296] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   296] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   296] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   296] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   296] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   296] 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   296] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   296] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   296] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   296] chdir("/")                  = 0
[   24.969280][   T30] audit: type=1400 audit(1735556183.620:66): avc:  denied  { execmem } for  pid=295 comm="syz-executor424" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   24.991589][   T30] audit: type=1400 audit(1735556183.650:67): avc:  denied  { mounton } for  pid=296 comm="syz-executor424" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   296] umount2("./pivot", MNT_DETACH) = 0
[pid   296] chroot("./newroot")         = 0
[pid   296] chdir("/")                  = 0
[pid   296] mkdir("/dev/gadgetfs", 0777) = 0
[pid   296] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   296] mkdir("/dev/binderfs", 0777) = 0
[pid   296] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   296] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[   25.014012][   T30] audit: type=1400 audit(1735556183.670:68): avc:  denied  { mounton } for  pid=296 comm="syz-executor424" path="/root/syzkaller.YS3Y2Q/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   25.038322][   T30] audit: type=1400 audit(1735556183.670:69): avc:  denied  { mount } for  pid=296 comm="syz-executor424" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   25.041852][  T296] request_module fs-gadgetfs succeeded, but still no fs?
[pid   296] mkdir("./0", 0777)          = 0
[pid   296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid   296] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid   296] close(3)                    = 0
[pid   296] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556d69c750) = 2
./strace-static-x86_64: Process 298 attached
[pid   298] set_robust_list(0x55556d69c760, 24) = 0
[pid   298] chdir("./0")                = 0
[pid   298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   298] setpgid(0, 0)               = 0
[pid   298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "1000", 4)         = 4
[pid   298] close(3)                    = 0
[pid   298] symlink("/dev/binderfs", "./binderfs") = 0
[pid   298] write(1, "executing program\n", 18executing program
) = 18
[pid   298] mkdir("./file0", 0777)      = 0
[pid   298] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid   298] mount(NULL, NULL, NULL, 0, NULL) = -1 EFAULT (Bad address)
[pid   298] chdir(NULL)                 = -1 EFAULT (Bad address)
[pid   298] mkdir(NULL, 000)            = -1 EFAULT (Bad address)
[pid   298] mount("./file0", "./file0", "incremental-fs", MS_NOEXEC|MS_NOATIME|MS_STRICTATIME, NULL) = 0
[pid   298] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[   25.060540][   T30] audit: type=1400 audit(1735556183.670:70): avc:  denied  { mounton } for  pid=296 comm="syz-executor424" path="/root/syzkaller.YS3Y2Q/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
[   25.084894][  T298] =======================================================
[   25.084894][  T298] WARNING: The mand mount option has been deprecated and
[   25.084894][  T298]          and is ignored by this kernel. Remove the mand
[pid   298] mount("./file0/file0", "./file0/file0", NULL, MS_NOSUID|MS_NOEXEC|MS_SYNCHRONOUS|MS_MANDLOCK|MS_BIND|MS_POSIXACL|MS_I_VERSION, NULL) = 0
[pid   298] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   298] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   298] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   298] exit_group(0)               = ?
[pid   298] +++ exited with 0 +++
[pid   296] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[pid   296] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   296] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   296] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=80, ...}, AT_EMPTY_PATH) = 0
[pid   296] getdents64(3, 0x55556d69d7f0 /* 4 entries */, 32768) = 112
[pid   296] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy)
[pid   296] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=80, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   296] umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy)
[pid   296] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   296] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=80, ...}, AT_EMPTY_PATH) = 0
[pid   296] getdents64(4, 0x55556d6a5830 /* 4 entries */, 32768) = 112
[   25.084894][  T298]          option from the mount to silence this warning.
[   25.084894][  T298] =======================================================
[   25.092742][   T30] audit: type=1400 audit(1735556183.670:71): avc:  denied  { mount } for  pid=296 comm="syz-executor424" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[pid   296] umount2("./0/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = 0
[pid   296] umount2("./0/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] newfstatat(AT_FDCWD, "./0/file0/file0", {st_mode=S_IFDIR|0700, st_size=80, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   296] umount2("./0/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] openat(AT_FDCWD, "./0/file0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 5
[pid   296] newfstatat(5, "", {st_mode=S_IFDIR|0700, st_size=80, ...}, AT_EMPTY_PATH) = 0
[pid   296] getdents64(5, 0x55556d6ad870 /* 4 entries */, 32768) = 112
[pid   296] umount2("./0/file0/file0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] newfstatat(AT_FDCWD, "./0/file0/file0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   296] umount2("./0/file0/file0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] openat(AT_FDCWD, "./0/file0/file0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 6
[pid   296] newfstatat(6, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   296] getdents64(6, 0x55556d6b58b0 /* 2 entries */, 32768) = 48
[pid   296] getdents64(6, 0x55556d6b58b0 /* 0 entries */, 32768) = 0
[pid   296] close(6)                    = 0
[pid   296] rmdir("./0/file0/file0/.incomplete") = 0
[pid   296] umount2("./0/file0/file0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] newfstatat(AT_FDCWD, "./0/file0/file0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   296] umount2("./0/file0/file0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] openat(AT_FDCWD, "./0/file0/file0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 6
[pid   296] newfstatat(6, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   296] getdents64(6, 0x55556d6b58b0 /* 2 entries */, 32768) = 48
[pid   296] getdents64(6, 0x55556d6b58b0 /* 0 entries */, 32768) = 0
[pid   296] close(6)                    = 0
[pid   296] rmdir("./0/file0/file0/.index") = 0
[pid   296] getdents64(5, 0x55556d6ad870 /* 0 entries */, 32768) = 0
[pid   296] close(5)                    = 0
[pid   296] rmdir("./0/file0/file0")    = -1 EBUSY (Device or resource busy)
[pid   296] umount2("./0/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   296] exit_group(1)               = ?
[   25.149213][   T30] audit: type=1400 audit(1735556183.670:72): avc:  denied  { mounton } for  pid=296 comm="syz-executor424" path="/root/syzkaller.YS3Y2Q/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
[   25.175728][   T30] audit: type=1400 audit(1735556183.670:73): avc:  denied  { mounton } for  pid=296 comm="syz-executor424" path="/root/syzkaller.YS3Y2Q/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=646 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   25.203065][   T30] audit: type=1400 audit(1735556183.670:74): avc:  denied  { unmount } for  pid=296 comm="syz-executor424" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   25.222726][   T30] audit: type=1400 audit(1735556183.690:75): avc:  denied  { mounton } for  pid=296 comm="syz-executor424" path="/dev/gadgetfs" dev="devtmpfs" ino=514 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.223111][  T296] ------------[ cut here ]------------
[   25.251485][  T296] WARNING: CPU: 0 PID: 296 at fs/inode.c:307 drop_nlink+0xc1/0x110
[   25.259377][  T296] Modules linked in:
[   25.263179][  T296] CPU: 1 PID: 296 Comm: syz-executor424 Not tainted 5.15.173-syzkaller-00161-gb4bd207b0380 #0
[   25.273426][  T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   25.283292][  T296] RIP: 0010:drop_nlink+0xc1/0x110
[   25.288209][  T296] 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 4f 9a ae ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   25.307724][  T296] RSP: 0018:ffffc90000987b08 EFLAGS: 00010293
[   25.313583][  T296] RAX: ffffffff81c1cc61 RBX: 0000000000000000 RCX: ffff88811a8713c0
[   25.321428][  T296] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   25.329273][  T296] RBP: ffffc90000987b30 R08: ffffffff81c1cbe4 R09: 0000000000000003
[   25.337099][  T296] R10: fffff52000130f50 R11: dffffc0000000001 R12: dffffc0000000000
[   25.344913][  T296] R13: 1ffff110209ba091 R14: ffff888104dd0440 R15: ffff888104dd0488
[   25.352732][  T296] FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.361472][  T296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.367908][  T296] CR2: 000055bbddf50328 CR3: 000000010d066000 CR4: 00000000003506a0
[   25.375893][  T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.383651][  T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.391515][  T296] Call Trace:
[   25.394689][  T296]  <TASK>
[   25.397411][  T296]  ? show_regs+0x58/0x60
[   25.401488][  T296]  ? __warn+0x160/0x2f0
[   25.405519][  T296]  ? drop_nlink+0xc1/0x110
[   25.409747][  T296]  ? report_bug+0x3d9/0x5b0
[   25.414118][  T296]  ? drop_nlink+0xc1/0x110
[   25.418352][  T296]  ? handle_bug+0x41/0x70
[   25.422523][  T296]  ? exc_invalid_op+0x1b/0x50
[   25.427005][  T296]  ? asm_exc_invalid_op+0x1b/0x20
[   25.431895][  T296]  ? drop_nlink+0x44/0x110
[   25.436122][  T296]  ? drop_nlink+0xc1/0x110
[   25.440373][  T296]  ? drop_nlink+0xc1/0x110
[   25.444690][  T296]  ? drop_nlink+0xc1/0x110
[   25.448878][  T296]  shmem_rmdir+0x59/0x90
[   25.452995][  T296]  vfs_rmdir+0x324/0x470
[   25.457037][  T296]  incfs_kill_sb+0x113/0x230
[   25.461459][  T296]  deactivate_locked_super+0xad/0x110
[   25.466740][  T296]  deactivate_super+0xbe/0xf0
[   25.471183][  T296]  cleanup_mnt+0x45c/0x510
[   25.475496][  T296]  __cleanup_mnt+0x19/0x20
[   25.479712][  T296]  task_work_run+0x129/0x190
[   25.484149][  T296]  do_exit+0xc48/0x2ca0
[   25.488125][  T296]  ? put_task_struct+0x80/0x80
[   25.492765][  T296]  ? _raw_spin_unlock_irq+0x4e/0x70
[   25.497743][  T296]  ? ptrace_notify+0x24c/0x350
[   25.502374][  T296]  ? do_notify_parent+0xa30/0xa30
[   25.507204][  T296]  do_group_exit+0x141/0x310
[   25.511723][  T296]  __x64_sys_exit_group+0x3f/0x40
[   25.516492][  T296]  x64_sys_call+0x610/0x9a0
[   25.520853][  T296]  do_syscall_64+0x3b/0xb0
[   25.525114][  T296]  ? clear_bhb_loop+0x35/0x90
[   25.529594][  T296]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.535381][  T296] RIP: 0033:0x7f559eba0f09
[   25.539761][  T296] Code: Unable to access opcode bytes at RIP 0x7f559eba0edf.
[   25.547083][  T296] RSP: 002b:00007fffa4f2d3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   25.555441][  T296] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f559eba0f09
[   25.563240][  T296] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   25.571025][  T296] RBP: 00007f559ec1d370 R08: ffffffffffffffb8 R09: 0000000000000000
[   25.578874][  T296] R10: 0000000000001000 R11: 0000000000000246 R12: 00007f559ec1d370
[   25.586651][  T296] R13: 0000000000000000 R14: 00007f559ec1ddc0 R15: 00007f559eb6ec90
[   25.594496][  T296]  </TASK>
[   25.597304][  T296] ---[ end trace 89972af0e748e519 ]---
[   25.602690][  T296] ==================================================================
[   25.610493][  T296] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   25.616574][  T296] Write of size 4 at addr 0000000000000170 by task syz-executor424/296
[   25.624644][  T296] 
[   25.626835][  T296] CPU: 1 PID: 296 Comm: syz-executor424 Tainted: G        W         5.15.173-syzkaller-00161-gb4bd207b0380 #0
[   25.638265][  T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   25.648164][  T296] Call Trace:
[   25.651313][  T296]  <TASK>
[   25.654061][  T296]  dump_stack_lvl+0x151/0x1c0
[   25.658578][  T296]  ? io_uring_drop_tctx_refs+0x190/0x190
[   25.664045][  T296]  ? _raw_spin_lock+0xa4/0x1b0
[   25.668644][  T296]  ? _raw_spin_trylock_bh+0x190/0x190
[   25.673853][  T296]  kasan_report+0x16f/0x1c0
[   25.678190][  T296]  ? ihold+0x20/0x60
[   25.681921][  T296]  ? ihold+0x20/0x60
[   25.685654][  T296]  kasan_check_range+0x293/0x2a0
[   25.690429][  T296]  __kasan_check_write+0x14/0x20
[   25.695208][  T296]  ihold+0x20/0x60
[   25.698762][  T296]  vfs_rmdir+0x201/0x470
[   25.702839][  T296]  incfs_kill_sb+0x113/0x230
[   25.707285][  T296]  deactivate_locked_super+0xad/0x110
[   25.712473][  T296]  deactivate_super+0xbe/0xf0
[   25.716988][  T296]  cleanup_mnt+0x45c/0x510
[   25.721238][  T296]  __cleanup_mnt+0x19/0x20
[   25.725491][  T296]  task_work_run+0x129/0x190
[   25.730100][  T296]  do_exit+0xc48/0x2ca0
[   25.734229][  T296]  ? put_task_struct+0x80/0x80
[   25.738827][  T296]  ? _raw_spin_unlock_irq+0x4e/0x70
[   25.743832][  T296]  ? ptrace_notify+0x24c/0x350
[   25.748432][  T296]  ? do_notify_parent+0xa30/0xa30
[   25.753293][  T296]  do_group_exit+0x141/0x310
[   25.757736][  T296]  __x64_sys_exit_group+0x3f/0x40
[   25.762583][  T296]  x64_sys_call+0x610/0x9a0
[   25.766921][  T296]  do_syscall_64+0x3b/0xb0
[   25.771173][  T296]  ? clear_bhb_loop+0x35/0x90
[   25.775686][  T296]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.781421][  T296] RIP: 0033:0x7f559eba0f09
[   25.785671][  T296] Code: Unable to access opcode bytes at RIP 0x7f559eba0edf.
[   25.792869][  T296] RSP: 002b:00007fffa4f2d3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   25.801116][  T296] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f559eba0f09
[   25.808929][  T296] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   25.816740][  T296] RBP: 00007f559ec1d370 R08: ffffffffffffffb8 R09: 0000000000000000
[   25.824549][  T296] R10: 0000000000001000 R11: 0000000000000246 R12: 00007f559ec1d370
[   25.832360][  T296] R13: 0000000000000000 R14: 00007f559ec1ddc0 R15: 00007f559eb6ec90
[   25.840177][  T296]  </TASK>
[   25.843037][  T296] ==================================================================
[   25.850936][  T296] Disabling lock debugging due to kernel taint
[   25.857018][  T296] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   25.864561][  T296] #PF: supervisor write access in kernel mode
[   25.870462][  T296] #PF: error_code(0x0002) - not-present page
[   25.876281][  T296] PGD 0 P4D 0 
[   25.879489][  T296] Oops: 0002 [#1] PREEMPT SMP KASAN
[   25.884522][  T296] CPU: 1 PID: 296 Comm: syz-executor424 Tainted: G    B   W         5.15.173-syzkaller-00161-gb4bd207b0380 #0
[   25.895980][  T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   25.906140][  T296] RIP: 0010:ihold+0x25/0x60
[   25.910487][  T296] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 61 92 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 e4 95 ae
[   25.929917][  T296] RSP: 0018:ffffc90000987b48 EFLAGS: 00010246
[   25.935816][  T296] RAX: ffff88811a871300 RBX: 0000000000000001 RCX: ffff88811a8713c0
[   25.943642][  T296] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   25.951440][  T296] RBP: ffffc90000987b58 R08: ffffffff8141a43b R09: 0000000000000003
[   25.959251][  T296] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   25.967059][  T296] R13: ffff8881201c5aa0 R14: 0000000000000000 R15: 1ffff11024038b5a
[   25.974874][  T296] FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.983637][  T296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.990066][  T296] CR2: 0000000000000170 CR3: 000000010d066000 CR4: 00000000003506a0
[   25.997877][  T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.005683][  T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.013525][  T296] Call Trace:
[   26.016619][  T296]  <TASK>
[   26.019404][  T296]  ? __die_body+0x62/0xb0
[   26.023570][  T296]  ? __die+0x7e/0x90
[   26.027296][  T296]  ? page_fault_oops+0x7f9/0xa90
[   26.032067][  T296]  ? _raw_spin_unlock+0x4d/0x70
[   26.036758][  T296]  ? kernelmode_fixup_or_oops+0xd0/0xd0
[   26.042135][  T296]  ? __schedule+0xcd4/0x1590
[   26.046657][  T296]  ? exc_page_fault+0x510/0x7f0
[   26.051342][  T296]  ? asm_exc_page_fault+0x27/0x30
[   26.056201][  T296]  ? check_panic_on_warn+0x5b/0xb0
[   26.061145][  T296]  ? ihold+0x25/0x60
[   26.064878][  T296]  ? ihold+0x20/0x60
[   26.068609][  T296]  vfs_rmdir+0x201/0x470
[   26.072691][  T296]  incfs_kill_sb+0x113/0x230
[   26.077115][  T296]  deactivate_locked_super+0xad/0x110
[   26.082323][  T296]  deactivate_super+0xbe/0xf0
[   26.086838][  T296]  cleanup_mnt+0x45c/0x510
[   26.091088][  T296]  __cleanup_mnt+0x19/0x20
[   26.095342][  T296]  task_work_run+0x129/0x190
[   26.099769][  T296]  do_exit+0xc48/0x2ca0
[   26.103761][  T296]  ? put_task_struct+0x80/0x80
[   26.108358][  T296]  ? _raw_spin_unlock_irq+0x4e/0x70
[   26.113401][  T296]  ? ptrace_notify+0x24c/0x350
[   26.118000][  T296]  ? do_notify_parent+0xa30/0xa30
[   26.122863][  T296]  do_group_exit+0x141/0x310
[   26.127285][  T296]  __x64_sys_exit_group+0x3f/0x40
[   26.132139][  T296]  x64_sys_call+0x610/0x9a0
[   26.136491][  T296]  do_syscall_64+0x3b/0xb0
[   26.140733][  T296]  ? clear_bhb_loop+0x35/0x90
[   26.145255][  T296]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   26.150976][  T296] RIP: 0033:0x7f559eba0f09
[   26.155225][  T296] Code: Unable to access opcode bytes at RIP 0x7f559eba0edf.
[   26.162430][  T296] RSP: 002b:00007fffa4f2d3d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   26.170788][  T296] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f559eba0f09
[   26.178773][  T296] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
[   26.186583][  T296] RBP: 00007f559ec1d370 R08: ffffffffffffffb8 R09: 0000000000000000
[   26.194396][  T296] R10: 0000000000001000 R11: 0000000000000246 R12: 00007f559ec1d370
[   26.202204][  T296] R13: 0000000000000000 R14: 00007f559ec1ddc0 R15: 00007f559eb6ec90
[   26.210021][  T296]  </TASK>
[   26.212881][  T296] Modules linked in:
[   26.216636][  T296] CR2: 0000000000000170
[   26.220616][  T296] ---[ end trace 89972af0e748e51a ]---
[   26.225900][  T296] RIP: 0010:ihold+0x25/0x60
[   26.230248][  T296] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 61 92 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 e4 95 ae
[   26.249866][  T296] RSP: 0018:ffffc90000987b48 EFLAGS: 00010246
[   26.255761][  T296] RAX: ffff88811a871300 RBX: 0000000000000001 RCX: ffff88811a8713c0
[   26.263580][  T296] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   26.271385][  T296] RBP: ffffc90000987b58 R08: ffffffff8141a43b R09: 0000000000000003
[   26.279199][  T296] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   26.287097][  T296] R13: ffff8881201c5aa0 R14: 0000000000000000 R15: 1ffff11024038b5a
[   26.294993][  T296] FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   26.303761][  T296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.310183][  T296] CR2: 0000000000000170 CR3: 000000010d066000 CR4: 00000000003506a0
[   26.317999][  T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.325803][  T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.333632][  T296] Kernel panic - not syncing: Fatal exception
[   26.339759][  T296] Kernel Offset: disabled
[   26.343887][  T296] Rebooting in 86400 seconds..