ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor2033937921

<...>
rocess permissive=1
[   11.546528][   T24] audit: type=1400 audit(1792758571.649:63): avc:  denied  { siginh } for  pid=218 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.0.43' (ED25519) to the list of known hosts.
execve("ci2-android-5-10/syz-executor2033937921", ["ci2-android-5-10/syz-executor2033937921"], 0x7fff64884200 /* 10 vars */) = 0
brk(NULL)                               = 0x55555723d000
brk(0x55555723dd40)                     = 0x55555723dd40
arch_prctl(ARCH_SET_FS, 0x55555723d3c0) = 0
set_tid_address(0x55555723d690)         = 298
set_robust_list(0x55555723d6a0, 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-5-10/syz-executor2033937921", 4096) = 45
getrandom("\x43\x05\xcd\x96\x85\xf5\xbc\xda", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55555723dd40
brk(0x55555725ed40)                     = 0x55555725ed40
brk(0x55555725f000)                     = 0x55555725f000
mprotect(0x7f828891e000, 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
getrandom("\xbe\x39\x28\x0f\x29\x18\xd4\xf7", 8, GRND_NONBLOCK) = 8
getrandom("\xf5\x6f\xf4\x02\x7a\xc9\xfc\x54", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.FT65v2", 0700)       = 0
chmod("./syzkaller.FT65v2", 0777)       = 0
chdir("./syzkaller.FT65v2")             = 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=0x55555723d690) = 299
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-10/strace-static-x86_64: Process 299 attached
[pid   299] set_robust_list(0x55555723d6a0, 24) = 0
[pid   299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   299] getppid()                   = 0
[pid   299] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   299] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   299] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   299] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   299] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   299] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   299] unshare(CLONE_NEWNS)        = 0
[pid   299] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   299] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   299] unshare(CLONE_NEWCGROUP)    = 0
[pid   299] unshare(CLONE_NEWUTS)       = 0
[pid   299] unshare(CLONE_SYSVSEM)      = 0
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   299] getpid()                    = 1
[pid   299] 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   299] 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   299] unshare(CLONE_NEWNET)       = 0
[pid   299] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   299] write(3, "0 65535", 7)      = 7
[pid   299] close(3)                    = 0
[pid   299] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   299] write(3, "100000", 6)       = 6
[pid   299] close(3)                    = 0
[pid   299] mkdir("./syz-tmp", 0777)    = 0
[pid   299] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   299] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   299] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   299] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   299] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   299] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   299] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   299] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   299] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   299] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   299] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   299] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   299] 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   299] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   299] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   299] 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   299] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   299] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   299] chdir("/")                  = 0
[pid   299] umount2("./pivot", MNT_DETACH) = 0
[pid   299] chroot("./newroot")         = 0
[pid   299] chdir("/")                  = 0
[pid   299] mkdir("/dev/gadgetfs", 0777) = 0
[   20.505778][   T24] audit: type=1400 audit(1792758580.619:64): avc:  denied  { execmem } for  pid=298 comm="syz-executor203" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   20.525222][   T24] audit: type=1400 audit(1792758580.619:65): avc:  denied  { mounton } for  pid=299 comm="syz-executor203" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[   20.547318][   T24] audit: type=1400 audit(1792758580.649:66): avc:  denied  { mounton } for  pid=299 comm="syz-executor203" path="/root/syzkaller.FT65v2/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   20.549597][  T299] request_module fs-gadgetfs succeeded, but still no fs?
[   20.571873][   T24] audit: type=1400 audit(1792758580.649:67): avc:  denied  { mount } for  pid=299 comm="syz-executor203" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   20.571887][   T24] audit: type=1400 audit(1792758580.649:68): avc:  denied  { mounton } for  pid=299 comm="syz-executor203" path="/root/syzkaller.FT65v2/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
[   20.571899][   T24] audit: type=1400 audit(1792758580.649:69): avc:  denied  { mount } for  pid=299 comm="syz-executor203" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   20.571911][   T24] audit: type=1400 audit(1792758580.649:70): avc:  denied  { mounton } for  pid=299 comm="syz-executor203" path="/root/syzkaller.FT65v2/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
[   20.571924][   T24] audit: type=1400 audit(1792758580.649:71): avc:  denied  { mounton } for  pid=299 comm="syz-executor203" path="/root/syzkaller.FT65v2/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14666 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[pid   299] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   299] mkdir("/dev/binderfs", 0777) = 0
[pid   299] mount("binder", "/dev/binderfs", "binder", 0, "stats=global") = 0
[pid   299] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   299] mkdir("./0", 0777)          = 0
[pid   299] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   299] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555723d690) = 2
ci2-android-5-10/strace-static-x86_64: Process 300 attached
[pid   299] rt_sigprocmask(SIG_SETMASK, [] <unfinished ...>
[pid   300] set_robust_list(0x55555723d6a0, 24) = 0
[pid   300] rt_sigprocmask(SIG_SETMASK, [] <unfinished ...>
[pid   299] <... rt_sigprocmask resumed>, NULL, 8) = 0
[pid   300] <... rt_sigprocmask resumed>, NULL, 8) = 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
executing program
[pid   300] symlink("/dev/binderfs", "./binderfs") = 0
[pid   300] write(1, "executing program\n", 18) = 18
[pid   300] mkdir("./bus", 000)         = 0
[   20.571935][   T24] audit: type=1400 audit(1792758580.649:72): avc:  denied  { unmount } for  pid=299 comm="syz-executor203" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   20.571948][   T24] audit: type=1400 audit(1792758580.669:73): avc:  denied  { mounton } for  pid=299 comm="syz-executor203" path="/dev/gadgetfs" dev="devtmpfs" ino=517 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[pid   300] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_SILENT, 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)
[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   299] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   299] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0
[pid   299] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   299] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   299] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   299] getdents64(3, 0x55555723e750 /* 6 entries */, 32768) = 168
[pid   299] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   299] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   299] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   299] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   299] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   299] getdents64(4, 0x555557246790 /* 2 entries */, 32768) = 48
[pid   299] getdents64(4, 0x555557246790 /* 0 entries */, 32768) = 0
[pid   299] close(4)                    = 0
[pid   299] rmdir("./0/.incomplete")    = 0
[pid   299] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   299] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   299] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   299] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   299] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   299] getdents64(4, 0x555557246790 /* 2 entries */, 32768) = 48
[pid   299] getdents64(4, 0x555557246790 /* 0 entries */, 32768) = 0
[pid   299] close(4)                    = 0
[pid   299] rmdir("./0/.index")         = 0
[   20.752653][  T300] incfs: ino conflict with backing FS 9
[   20.772702][  T299] ------------[ cut here ]------------
[   20.778203][  T299] WARNING: CPU: 1 PID: 299 at fs/inode.c:304 drop_nlink+0xc5/0x110
[   20.786647][  T299] Modules linked in:
[   20.790560][  T299] CPU: 1 PID: 299 Comm: syz-executor203 Not tainted syzkaller #0
[   20.798247][  T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
[   20.808344][  T299] RIP: 0010:drop_nlink+0xc5/0x110
[   20.813426][  T299] Code: 1b 48 8d bb b8 04 00 00 be 08 00 00 00 e8 33 f6 f1 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3b 66 b7 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   20.833041][  T299] RSP: 0018:ffffc90000b37c10 EFLAGS: 00010293
[   20.839121][  T299] RAX: ffffffff81ad5085 RBX: ffff88811ac8e100 RCX: ffff8881055b9400
[   20.847128][  T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   20.855144][  T299] RBP: ffffc90000b37c38 R08: 0000000000000003 R09: 0000000000000004
[   20.863140][  T299] R10: dffffc0000000000 R11: fffff52000166f70 R12: dffffc0000000000
[   20.871115][  T299] R13: 1ffff11023591c29 R14: ffff88811ac8e148 R15: 0000000000000000
[   20.879063][  T299] FS:  000055555723d3c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   20.887996][  T299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.894576][  T299] CR2: 000055555724e798 CR3: 000000011f6d4000 CR4: 00000000003506a0
[   20.902548][  T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   20.910698][  T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   20.918649][  T299] Call Trace:
[   20.921974][  T299]  shmem_rmdir+0x5b/0x90
[   20.926205][  T299]  vfs_rmdir+0x1ab/0x3c0
[   20.930448][  T299]  incfs_kill_sb+0xf7/0x200
[   20.934934][  T299]  deactivate_locked_super+0xa0/0x100
[   20.940316][  T299]  deactivate_super+0xaf/0xe0
[   20.944979][  T299]  cleanup_mnt+0x44f/0x500
[   20.949364][  T299]  __cleanup_mnt+0x19/0x20
[   20.953793][  T299]  task_work_run+0x127/0x190
[   20.958367][  T299]  ptrace_notify+0x230/0x270
[   20.962973][  T299]  ? do_notify_parent+0x810/0x810
[   20.967987][  T299]  ? user_path_at_empty+0x43/0x50
[   20.973038][  T299]  ? __x64_sys_umount+0x12d/0x170
[   20.978049][  T299]  ? path_umount+0xfa0/0xfa0
[   20.982649][  T299]  syscall_exit_work+0x6e/0x140
[   20.987491][  T299]  syscall_exit_to_user_mode+0x2f/0x40
[   20.992959][  T299]  do_syscall_64+0x3d/0x40
[   20.997361][  T299]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   21.004123][  T299] RIP: 0033:0x7f828888b527
[   21.008520][  T299] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 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
[   21.028134][  T299] RSP: 002b:00007ffeffc60328 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   21.036553][  T299] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f828888b527
[   21.044533][  T299] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeffc603e0
[   21.052501][  T299] RBP: 00007ffeffc603e0 R08: 00007ffeffc613e0 R09: 00000000ffffffff
[   21.060478][  T299] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffeffc61450
[   21.068432][  T299] R13: 000055555723e720 R14: 00007ffeffc61450 R15: 0000000000000001
[   21.076413][  T299] ---[ end trace dbd00b0df7351029 ]---
[   21.081936][  T299] ==================================================================
[   21.089997][  T299] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   21.096218][  T299] Write of size 4 at addr 0000000000000170 by task syz-executor203/299
[   21.104434][  T299] 
[   21.106757][  T299] CPU: 1 PID: 299 Comm: syz-executor203 Tainted: G        W         syzkaller #0
[   21.115854][  T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
[   21.125883][  T299] Call Trace:
[   21.129153][  T299]  __dump_stack+0x21/0x24
[   21.133456][  T299]  dump_stack_lvl+0x1a7/0x208
[   21.138113][  T299]  ? thaw_kernel_threads+0x220/0x220
[   21.143372][  T299]  ? show_regs_print_info+0x18/0x18
[   21.148543][  T299]  ? ihold+0x20/0x60
[   21.152432][  T299]  kasan_report+0xbd/0x140
[   21.156821][  T299]  ? ihold+0x20/0x60
[   21.160688][  T299]  kasan_check_range+0x249/0x2a0
[   21.165599][  T299]  __kasan_check_write+0x14/0x20
[   21.170524][  T299]  ihold+0x20/0x60
[   21.174220][  T299]  vfs_rmdir+0x2d5/0x3c0
[   21.178439][  T299]  incfs_kill_sb+0xf7/0x200
[   21.182917][  T299]  deactivate_locked_super+0xa0/0x100
[   21.188288][  T299]  deactivate_super+0xaf/0xe0
[   21.193087][  T299]  cleanup_mnt+0x44f/0x500
[   21.197502][  T299]  __cleanup_mnt+0x19/0x20
[   21.201908][  T299]  task_work_run+0x127/0x190
[   21.206488][  T299]  ptrace_notify+0x230/0x270
[   21.211051][  T299]  ? do_notify_parent+0x810/0x810
[   21.216072][  T299]  ? user_path_at_empty+0x43/0x50
[   21.221078][  T299]  ? __x64_sys_umount+0x12d/0x170
[   21.226091][  T299]  ? path_umount+0xfa0/0xfa0
[   21.230659][  T299]  syscall_exit_work+0x6e/0x140
[   21.235490][  T299]  syscall_exit_to_user_mode+0x2f/0x40
[   21.240977][  T299]  do_syscall_64+0x3d/0x40
[   21.245390][  T299]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   21.251259][  T299] RIP: 0033:0x7f828888b527
[   21.255656][  T299] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 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
[   21.275236][  T299] RSP: 002b:00007ffeffc60328 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   21.283633][  T299] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f828888b527
[   21.291606][  T299] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeffc603e0
[   21.299558][  T299] RBP: 00007ffeffc603e0 R08: 00007ffeffc613e0 R09: 00000000ffffffff
[   21.307504][  T299] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffeffc61450
[   21.315453][  T299] R13: 000055555723e720 R14: 00007ffeffc61450 R15: 0000000000000001
[   21.323401][  T299] ==================================================================
[   21.331465][  T299] Disabling lock debugging due to kernel taint
[   21.337708][  T299] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   21.345619][  T299] #PF: supervisor write access in kernel mode
[   21.351667][  T299] #PF: error_code(0x0002) - not-present page
[   21.358161][  T299] PGD 0 P4D 0 
[   21.361520][  T299] Oops: 0002 [#1] PREEMPT SMP KASAN
[   21.366699][  T299] CPU: 1 PID: 299 Comm: syz-executor203 Tainted: G    B   W         syzkaller #0
[   21.375780][  T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
[   21.385820][  T299] RIP: 0010:ihold+0x26/0x60
[   21.390299][  T299] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 51 5e b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 20 ee f1 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
[   21.409880][  T299] RSP: 0018:ffffc90000b37c50 EFLAGS: 00010246
[   21.415922][  T299] RAX: ffff8881055b9400 RBX: 0000000000000000 RCX: ffff8881055b9400
[   21.423871][  T299] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   21.431817][  T299] RBP: ffffc90000b37c60 R08: 0000000000000003 R09: 0000000000000004
[   21.439768][  T299] R10: dffffc0000000000 R11: fffffbfff0dcfa48 R12: dffffc0000000000
[   21.447716][  T299] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   21.455838][  T299] FS:  000055555723d3c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   21.464743][  T299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.471304][  T299] CR2: 0000000000000170 CR3: 000000011f6d4000 CR4: 00000000003506a0
[   21.479251][  T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   21.487221][  T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   21.495166][  T299] Call Trace:
[   21.498444][  T299]  vfs_rmdir+0x2d5/0x3c0
[   21.502662][  T299]  incfs_kill_sb+0xf7/0x200
[   21.507146][  T299]  deactivate_locked_super+0xa0/0x100
[   21.512491][  T299]  deactivate_super+0xaf/0xe0
[   21.517147][  T299]  cleanup_mnt+0x44f/0x500
[   21.521537][  T299]  __cleanup_mnt+0x19/0x20
[   21.525926][  T299]  task_work_run+0x127/0x190
[   21.530493][  T299]  ptrace_notify+0x230/0x270
[   21.535059][  T299]  ? do_notify_parent+0x810/0x810
[   21.540057][  T299]  ? user_path_at_empty+0x43/0x50
[   21.545068][  T299]  ? __x64_sys_umount+0x12d/0x170
[   21.550065][  T299]  ? path_umount+0xfa0/0xfa0
[   21.554633][  T299]  syscall_exit_work+0x6e/0x140
[   21.559464][  T299]  syscall_exit_to_user_mode+0x2f/0x40
[   21.564898][  T299]  do_syscall_64+0x3d/0x40
[   21.569290][  T299]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   21.575158][  T299] RIP: 0033:0x7f828888b527
[   21.579560][  T299] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 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
[   21.599154][  T299] RSP: 002b:00007ffeffc60328 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   21.607548][  T299] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f828888b527
[   21.615612][  T299] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeffc603e0
[   21.623562][  T299] RBP: 00007ffeffc603e0 R08: 00007ffeffc613e0 R09: 00000000ffffffff
[   21.631509][  T299] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffeffc61450
[   21.639460][  T299] R13: 000055555723e720 R14: 00007ffeffc61450 R15: 0000000000000001
[   21.647411][  T299] Modules linked in:
[   21.651304][  T299] CR2: 0000000000000170
[   21.655442][  T299] ---[ end trace dbd00b0df735102a ]---
[   21.660889][  T299] RIP: 0010:ihold+0x26/0x60
[   21.665365][  T299] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 51 5e b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 20 ee f1 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
[   21.684948][  T299] RSP: 0018:ffffc90000b37c50 EFLAGS: 00010246
[   21.690991][  T299] RAX: ffff8881055b9400 RBX: 0000000000000000 RCX: ffff8881055b9400
[   21.698958][  T299] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   21.706906][  T299] RBP: ffffc90000b37c60 R08: 0000000000000003 R09: 0000000000000004
[   21.714854][  T299] R10: dffffc0000000000 R11: fffffbfff0dcfa48 R12: dffffc0000000000
[   21.722802][  T299] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   21.730751][  T299] FS:  000055555723d3c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   21.739669][  T299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.746225][  T299] CR2: 0000000000000170 CR3: 000000011f6d4000 CR4: 00000000003506a0
[   21.754174][  T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   21.762119][  T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   21.770074][  T299] Kernel panic - not syncing: Fatal exception
[   21.776331][  T299] Kernel Offset: disabled
[   21.780637][  T299] Rebooting in 86400 seconds..