ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor3890135473

<...>
 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   15.127833][   T30] audit: type=1400 audit(1785731628.705:63): avc:  denied  { siginh } for  pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   17.171397][  T231] scp (231) used greatest stack depth: 22824 bytes left
Warning: Permanently added '10.128.1.145' (ED25519) to the list of known hosts.
execve("ci2-android-5-15/syz-executor3890135473", ["ci2-android-5-15/syz-executor3890135473"], 0x7ffdb9a29140 /* 10 vars */) = 0
brk(NULL)                               = 0x555561f50000
brk(0x555561f50e00)                     = 0x555561f50e00
arch_prctl(ARCH_SET_FS, 0x555561f50480) = 0
set_tid_address(0x555561f50750)         = 303
set_robust_list(0x555561f50760, 24)     = 0
rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-5-15/syz-executor3890135473", 4096) = 45
getrandom("\xab\xc3\xf4\x2d\x09\xa5\xa4\xf3", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555561f50e00
brk(0x555561f71e00)                     = 0x555561f71e00
brk(0x555561f72000)                     = 0x555561f72000
mprotect(0x7f9c2e3ce000, 20480, 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
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=0x7f9c2e325eb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f9c2e329550}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f9c2e325eb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f9c2e329550}, NULL, 8) = 0
getrandom("\x7d\x2f\x34\xdd\xce\x76\x95\x5b", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.j6oUGb", 0700)       = 0
chmod("./syzkaller.j6oUGb", 0777)       = 0
chdir("./syzkaller.j6oUGb")             = 0
unshare(CLONE_NEWPID)                   = 0
rt_sigprocmask(SIG_BLOCK, ~[], [], 8)   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555561f50750) = 304
ci2-android-5-15/strace-static-x86_64: Process 304 attached
[pid   304] set_robust_list(0x555561f50760, 24) = 0
[pid   304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   304] getppid()                   = 0
[pid   304] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   304] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   304] unshare(CLONE_NEWNS <unfinished ...>
[pid   303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   304] <... unshare resumed>)      = 0
[pid   304] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   304] unshare(CLONE_NEWCGROUP)    = 0
[pid   304] unshare(CLONE_NEWUTS)       = 0
[pid   304] unshare(CLONE_SYSVSEM)      = 0
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   304] getpid()                    = 1
[pid   304] 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   304] 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   304] unshare(CLONE_NEWNET)       = 0
[pid   304] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   304] write(3, "0 65535", 7)      = 7
[pid   304] close(3)                    = 0
[pid   304] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   304] write(3, "100000", 6)       = 6
[pid   304] close(3)                    = 0
[pid   304] mkdir("./syz-tmp", 0777)    = 0
[   25.393740][   T30] audit: type=1400 audit(1785731639.015:64): avc:  denied  { execmem } for  pid=303 comm="syz-executor389" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   25.419254][   T30] audit: type=1400 audit(1785731639.045:65): avc:  denied  { mounton } for  pid=304 comm="syz-executor389" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   304] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   304] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   304] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   304] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   304] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   304] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   304] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] 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   304] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   304] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   304] 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   304] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   304] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   304] chdir("/")                  = 0
[pid   304] umount2("./pivot", MNT_DETACH) = 0
[pid   304] chroot("./newroot")         = 0
[pid   304] chdir("/")                  = 0
[   25.452507][   T30] audit: type=1400 audit(1785731639.075:66): avc:  denied  { mounton } for  pid=304 comm="syz-executor389" path="/root/syzkaller.j6oUGb/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   25.476944][   T30] audit: type=1400 audit(1785731639.075:67): avc:  denied  { mount } for  pid=304 comm="syz-executor389" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   304] mkdir("/dev/gadgetfs", 0777) = 0
[pid   304] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   304] mkdir("/dev/binderfs", 0777) = 0
[pid   304] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   304] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   304] mkdir("./0", 0777)          = 0
[pid   304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid   304] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid   304] close(3)                    = 0
[pid   304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555561f50750) = 2
[pid   304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-15/strace-static-x86_64: Process 305 attached
[pid   305] set_robust_list(0x555561f50760, 24) = 0
[   25.499561][   T30] audit: type=1400 audit(1785731639.085:68): avc:  denied  { mounton } for  pid=304 comm="syz-executor389" path="/root/syzkaller.j6oUGb/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
[   25.508671][  T304] request_module fs-gadgetfs succeeded, but still no fs?
[pid   305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   305] chdir("./0")                = 0
[pid   305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   305] setpgid(0, 0)               = 0
[pid   305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   305] write(3, "1000", 4)         = 4
[pid   305] close(3)                    = 0
[pid   305] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid   305] write(1, "executing program\n", 18) = 18
[pid   305] mkdir("./bus", 0777)        = 0
[pid   305] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[   25.524926][   T30] audit: type=1400 audit(1785731639.085:69): avc:  denied  { mount } for  pid=304 comm="syz-executor389" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   25.559011][   T30] audit: type=1400 audit(1785731639.095:70): avc:  denied  { mounton } for  pid=304 comm="syz-executor389" path="/root/syzkaller.j6oUGb/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
[   25.564750][  T305] incfs: ino conflict with backing FS 9
[pid   305] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_SILENT|MS_RELATIME|MS_STRICTATIME, NULL) = 0
[pid   305] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   305] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   305] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   305] exit_group(0)               = ?
[pid   305] +++ exited with 0 +++
[pid   304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
[pid   304] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0
[pid   304] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   304] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   304] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   304] getdents64(3, 0x555561f51810 /* 6 entries */, 32768) = 168
[pid   304] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   304] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   304] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   304] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   304] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   304] getdents64(4, 0x555561f59850 /* 2 entries */, 32768) = 48
[pid   304] getdents64(4, 0x555561f59850 /* 0 entries */, 32768) = 0
[pid   304] close(4)                    = 0
[pid   304] rmdir("./0/.incomplete")    = 0
[pid   304] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   304] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   304] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   304] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   304] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   304] getdents64(4, 0x555561f59850 /* 2 entries */, 32768) = 48
[pid   304] getdents64(4, 0x555561f59850 /* 0 entries */, 32768) = 0
[pid   304] close(4)                    = 0
[pid   304] rmdir("./0/.index")         = 0
[   25.586391][   T30] audit: type=1400 audit(1785731639.105:71): avc:  denied  { mounton } for  pid=304 comm="syz-executor389" path="/root/syzkaller.j6oUGb/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14757 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   25.619572][   T30] audit: type=1400 audit(1785731639.115:72): avc:  denied  { unmount } for  pid=304 comm="syz-executor389" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   25.639340][   T30] audit: type=1400 audit(1785731639.135:73): avc:  denied  { mounton } for  pid=304 comm="syz-executor389" path="/dev/gadgetfs" dev="devtmpfs" ino=556 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.662467][  T304] ------------[ cut here ]------------
[   25.668085][  T304] WARNING: CPU: 1 PID: 304 at fs/inode.c:335 drop_nlink+0xc5/0x110
[   25.676084][  T304] Modules linked in:
[   25.680008][  T304] CPU: 1 PID: 304 Comm: syz-executor389 Not tainted syzkaller #0
[   25.688001][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   25.698175][  T304] RIP: 0010:drop_nlink+0xc5/0x110
[   25.703239][  T304] Code: 1b 48 8d bb b8 04 00 00 be 08 00 00 00 e8 c3 0b f2 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3b 9a b2 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   25.722924][  T304] RSP: 0018:ffffc900009f7bd0 EFLAGS: 00010293
[   25.729031][  T304] RAX: ffffffff81b71ca5 RBX: ffff88811d22cbf0 RCX: ffff8881238262c0
[   25.737063][  T304] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   25.745052][  T304] RBP: ffffc900009f7bf8 R08: 0000000000000003 R09: 0000000000000004
[   25.753096][  T304] R10: dffffc0000000000 R11: fffff5200013ef68 R12: dffffc0000000000
[   25.761103][  T304] R13: 1ffff11023a45987 R14: ffff88811d22cc38 R15: 0000000000000000
[   25.769121][  T304] FS:  0000555561f50480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.778125][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.784710][  T304] CR2: 0000564c0cd0be38 CR3: 0000000122e88000 CR4: 00000000003506a0
[   25.792742][  T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.800750][  T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.808784][  T304] Call Trace:
[   25.812104][  T304]  <TASK>
[   25.815034][  T304]  shmem_rmdir+0x5b/0x90
[   25.819341][  T304]  vfs_rmdir+0x1ae/0x450
[   25.823604][  T304]  incfs_kill_sb+0xfe/0x210
[   25.828148][  T304]  deactivate_locked_super+0xa0/0x100
[   25.833541][  T304]  deactivate_super+0xaf/0xe0
[   25.838260][  T304]  cleanup_mnt+0x44f/0x500
[   25.842692][  T304]  __cleanup_mnt+0x19/0x20
[   25.847151][  T304]  task_work_run+0x127/0x190
[   25.851758][  T304]  ptrace_notify+0x230/0x270
[   25.856391][  T304]  ? do_notify_parent+0x830/0x830
[   25.861436][  T304]  ? user_path_at_empty+0x162/0x1c0
[   25.866686][  T304]  ? __x64_sys_umount+0x12d/0x170
[   25.871756][  T304]  ? path_umount+0xfa0/0xfa0
[   25.876389][  T304]  syscall_exit_work+0x87/0x160
[   25.881261][  T304]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   25.887503][  T304]  syscall_exit_to_user_mode+0xd/0x30
[   25.892898][  T304]  do_syscall_64+0x58/0xa0
[   25.897385][  T304]  ? clear_bhb_loop+0x50/0xa0
[   25.902084][  T304]  ? clear_bhb_loop+0x50/0xa0
[   25.906805][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.912730][  T304] RIP: 0033:0x7f9c2e343667
[   25.917208][  T304] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   25.936900][  T304] RSP: 002b:00007ffd0c5b1878 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   25.945322][  T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9c2e343667
[   25.953428][  T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd0c5b1930
[   25.961445][  T304] RBP: 00007ffd0c5b1930 R08: 00007ffd0c5b2930 R09: 00000000ffffffff
[   25.969492][  T304] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd0c5b29a0
[   25.977504][  T304] R13: 0000555561f517e0 R14: 431bde82d7b634db R15: 00007ffd0c5b29c0
[   25.985483][  T304]  </TASK>
[   25.988557][  T304] ---[ end trace dda90960f22538bb ]---
[   25.994075][  T304] ==================================================================
[   26.002139][  T304] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   26.008386][  T304] Write of size 4 at addr 0000000000000170 by task syz-executor389/304
[   26.016632][  T304] 
[   26.018970][  T304] CPU: 1 PID: 304 Comm: syz-executor389 Tainted: G        W         syzkaller #0
[   26.028085][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   26.038132][  T304] Call Trace:
[   26.041404][  T304]  <TASK>
[   26.044333][  T304]  __dump_stack+0x21/0x30
[   26.048674][  T304]  dump_stack_lvl+0x110/0x170
[   26.053365][  T304]  ? show_regs_print_info+0x20/0x20
[   26.058558][  T304]  ? _raw_spin_lock+0x94/0xf0
[   26.063234][  T304]  ? _raw_spin_trylock_bh+0x150/0x150
[   26.068614][  T304]  ? ihold+0x20/0x60
[   26.072508][  T304]  kasan_report+0xcc/0x150
[   26.076924][  T304]  ? ihold+0x20/0x60
[   26.080836][  T304]  kasan_check_range+0x249/0x2a0
[   26.085771][  T304]  __kasan_check_write+0x14/0x20
[   26.090704][  T304]  ihold+0x20/0x60
[   26.094423][  T304]  vfs_rmdir+0x23d/0x450
[   26.098668][  T304]  incfs_kill_sb+0xfe/0x210
[   26.103170][  T304]  deactivate_locked_super+0xa0/0x100
[   26.108542][  T304]  deactivate_super+0xaf/0xe0
[   26.113218][  T304]  cleanup_mnt+0x44f/0x500
[   26.117644][  T304]  __cleanup_mnt+0x19/0x20
[   26.122058][  T304]  task_work_run+0x127/0x190
[   26.126643][  T304]  ptrace_notify+0x230/0x270
[   26.131237][  T304]  ? do_notify_parent+0x830/0x830
[   26.136262][  T304]  ? user_path_at_empty+0x162/0x1c0
[   26.141474][  T304]  ? __x64_sys_umount+0x12d/0x170
[   26.146494][  T304]  ? path_umount+0xfa0/0xfa0
[   26.151085][  T304]  syscall_exit_work+0x87/0x160
[   26.155931][  T304]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   26.162081][  T304]  syscall_exit_to_user_mode+0xd/0x30
[   26.167454][  T304]  do_syscall_64+0x58/0xa0
[   26.171884][  T304]  ? clear_bhb_loop+0x50/0xa0
[   26.176557][  T304]  ? clear_bhb_loop+0x50/0xa0
[   26.181232][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   26.187136][  T304] RIP: 0033:0x7f9c2e343667
[   26.191562][  T304] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   26.211325][  T304] RSP: 002b:00007ffd0c5b1878 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   26.219753][  T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9c2e343667
[   26.227734][  T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd0c5b1930
[   26.235706][  T304] RBP: 00007ffd0c5b1930 R08: 00007ffd0c5b2930 R09: 00000000ffffffff
[   26.243678][  T304] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd0c5b29a0
[   26.251656][  T304] R13: 0000555561f517e0 R14: 431bde82d7b634db R15: 00007ffd0c5b29c0
[   26.259648][  T304]  </TASK>
[   26.262682][  T304] ==================================================================
[   26.270743][  T304] Disabling lock debugging due to kernel taint
[   26.277017][  T304] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   26.284853][  T304] #PF: supervisor write access in kernel mode
[   26.290943][  T304] #PF: error_code(0x0002) - not-present page
[   26.296933][  T304] PGD 0 P4D 0 
[   26.300323][  T304] Oops: 0002 [#1] PREEMPT SMP KASAN
[   26.305538][  T304] CPU: 1 PID: 304 Comm: syz-executor389 Tainted: G    B   W         syzkaller #0
[   26.314657][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   26.324723][  T304] RIP: 0010:ihold+0x26/0x60
[   26.329242][  T304] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 51 92 b2 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 b0 03 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 d1
[   26.348865][  T304] RSP: 0018:ffffc900009f7c10 EFLAGS: 00010246
[   26.354951][  T304] RAX: ffff888123826200 RBX: 0000000000000000 RCX: ffff8881238262c0
[   26.362942][  T304] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   26.370918][  T304] RBP: ffffc900009f7c20 R08: 0000000000000003 R09: 0000000000000004
[   26.378899][  T304] R10: dffffc0000000000 R11: fffffbfff0e18c4c R12: 1ffff110242ca46c
[   26.386887][  T304] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   26.394868][  T304] FS:  0000555561f50480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   26.403903][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.410509][  T304] CR2: 0000000000000170 CR3: 0000000122e88000 CR4: 00000000003506a0
[   26.418492][  T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.426500][  T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.434479][  T304] Call Trace:
[   26.437782][  T304]  <TASK>
[   26.440729][  T304]  vfs_rmdir+0x23d/0x450
[   26.444990][  T304]  incfs_kill_sb+0xfe/0x210
[   26.449507][  T304]  deactivate_locked_super+0xa0/0x100
[   26.454892][  T304]  deactivate_super+0xaf/0xe0
[   26.459598][  T304]  cleanup_mnt+0x44f/0x500
[   26.464030][  T304]  __cleanup_mnt+0x19/0x20
[   26.468460][  T304]  task_work_run+0x127/0x190
[   26.473058][  T304]  ptrace_notify+0x230/0x270
[   26.477661][  T304]  ? do_notify_parent+0x830/0x830
[   26.482695][  T304]  ? user_path_at_empty+0x162/0x1c0
[   26.487905][  T304]  ? __x64_sys_umount+0x12d/0x170
[   26.492941][  T304]  ? path_umount+0xfa0/0xfa0
[   26.497537][  T304]  syscall_exit_work+0x87/0x160
[   26.502402][  T304]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   26.508584][  T304]  syscall_exit_to_user_mode+0xd/0x30
[   26.513990][  T304]  do_syscall_64+0x58/0xa0
[   26.518412][  T304]  ? clear_bhb_loop+0x50/0xa0
[   26.523121][  T304]  ? clear_bhb_loop+0x50/0xa0
[   26.527811][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   26.533742][  T304] RIP: 0033:0x7f9c2e343667
[   26.538188][  T304] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   26.557802][  T304] RSP: 002b:00007ffd0c5b1878 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   26.566226][  T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9c2e343667
[   26.574214][  T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd0c5b1930
[   26.582202][  T304] RBP: 00007ffd0c5b1930 R08: 00007ffd0c5b2930 R09: 00000000ffffffff
[   26.590194][  T304] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd0c5b29a0
[   26.598188][  T304] R13: 0000555561f517e0 R14: 431bde82d7b634db R15: 00007ffd0c5b29c0
[   26.606213][  T304]  </TASK>
[   26.609253][  T304] Modules linked in:
[   26.613168][  T304] CR2: 0000000000000170
[   26.617337][  T304] ---[ end trace dda90960f22538bc ]---
[   26.622794][  T304] RIP: 0010:ihold+0x26/0x60
[   26.627316][  T304] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 51 92 b2 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 b0 03 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 d1
[   26.646932][  T304] RSP: 0018:ffffc900009f7c10 EFLAGS: 00010246
[   26.653032][  T304] RAX: ffff888123826200 RBX: 0000000000000000 RCX: ffff8881238262c0
[   26.661052][  T304] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   26.669051][  T304] RBP: ffffc900009f7c20 R08: 0000000000000003 R09: 0000000000000004
[   26.677056][  T304] R10: dffffc0000000000 R11: fffffbfff0e18c4c R12: 1ffff110242ca46c
[   26.685053][  T304] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   26.693051][  T304] FS:  0000555561f50480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   26.702006][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.708609][  T304] CR2: 0000000000000170 CR3: 0000000122e88000 CR4: 00000000003506a0
[   26.716599][  T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.724582][  T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.732569][  T304] Kernel panic - not syncing: Fatal exception
[   26.738751][  T304] Kernel Offset: disabled
[   26.743108][  T304] Rebooting in 86400 seconds..