ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor3977030437

<...>

syzkaller
syzkaller login: [   14.527884][   T28] kauditd_printk_skb: 48 callbacks suppressed
[   14.527899][   T28] audit: type=1400 audit(1785389625.205:59): avc:  denied  { transition } for  pid=225 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.532291][   T28] audit: type=1400 audit(1785389625.205:60): avc:  denied  { noatsecure } for  pid=225 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.535200][   T28] audit: type=1400 audit(1785389625.205:61): avc:  denied  { write } for  pid=225 comm="sh" path="pipe:[13171]" dev="pipefs" ino=13171 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   14.538501][   T28] audit: type=1400 audit(1785389625.205:62): avc:  denied  { rlimitinh } for  pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.541422][   T28] audit: type=1400 audit(1785389625.205:63): avc:  denied  { siginh } for  pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.546873][  T222] sshd-session (222) used greatest stack depth: 22216 bytes left
Warning: Permanently added '10.128.10.2' (ED25519) to the list of known hosts.
execve("ci2-android-6-1/syz-executor3977030437", ["ci2-android-6-1/syz-executor3977030437"], 0x7ffc602755a0 /* 10 vars */) = 0
brk(NULL)                               = 0x5555741a6000
brk(0x5555741a6d40)                     = 0x5555741a6d40
arch_prctl(ARCH_SET_FS, 0x5555741a63c0) = 0
set_tid_address(0x5555741a6690)         = 305
set_robust_list(0x5555741a66a0, 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-6-1/syz-executor3977030437", 4096) = 44
getrandom("\x61\x8f\xa0\x13\x95\x19\x69\x20", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x5555741a6d40
brk(0x5555741c7d40)                     = 0x5555741c7d40
brk(0x5555741c8000)                     = 0x5555741c8000
mprotect(0x7ff9a63aa000, 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("\xfc\xb4\x7e\xc3\xfc\x36\x9b\x69", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.mSmDGQ", 0700)       = 0
chmod("./syzkaller.mSmDGQ", 0777)       = 0
chdir("./syzkaller.mSmDGQ")             = 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=0x5555741a6690) = 306
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-6-1/strace-static-x86_64: Process 306 attached
[pid   306] set_robust_list(0x5555741a66a0, 24) = 0
[pid   306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   306] getppid()                   = 0
[pid   306] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   306] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   306] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   306] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   306] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   306] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   306] unshare(CLONE_NEWNS)        = 0
[pid   306] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   306] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   306] unshare(CLONE_NEWCGROUP)    = 0
[pid   306] unshare(CLONE_NEWUTS)       = 0
[pid   306] unshare(CLONE_SYSVSEM)      = 0
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   306] getpid()                    = 1
[pid   306] 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   306] 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   306] unshare(CLONE_NEWNET)       = 0
[pid   306] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   306] write(3, "0 65535", 7)      = 7
[pid   306] close(3)                    = 0
[pid   306] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   306] write(3, "100000", 6)       = 6
[pid   306] close(3)                    = 0
[pid   306] mkdir("./syz-tmp", 0777)    = 0
[pid   306] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   306] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   306] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   306] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   306] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   306] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   306] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   306] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   306] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   306] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   306] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   306] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   306] 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   306] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   306] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   306] 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   306] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   306] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   306] chdir("/")                  = 0
[pid   306] umount2("./pivot", MNT_DETACH) = 0
[pid   306] chroot("./newroot")         = 0
[pid   306] chdir("/")                  = 0
[pid   306] mkdir("/dev/gadgetfs", 0777) = 0
[   23.870169][   T28] audit: type=1400 audit(1785389634.545:64): avc:  denied  { execmem } for  pid=305 comm="syz-executor397" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   23.890268][   T28] audit: type=1400 audit(1785389634.555:65): avc:  denied  { mounton } for  pid=306 comm="syz-executor397" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   306] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   306] mkdir("/dev/binderfs", 0777) = 0
[pid   306] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   306] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   306] mkdir("./0", 0777)          = 0
[pid   306] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555741a6690) = 2
[pid   306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-6-1/strace-static-x86_64: Process 307 attached
[pid   307] set_robust_list(0x5555741a66a0, 24) = 0
[pid   307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   307] chdir("./0")                = 0
[pid   307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   307] setpgid(0, 0)               = 0
[pid   307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   307] write(3, "1000", 4)         = 4
[pid   307] close(3)                    = 0
[pid   307] symlink("/dev/binderfs", "./binderfs") = 0
[pid   307] write(1, "executing program\n", 18) = 18
[pid   307] mkdir("./bus", 000)         = 0
executing program
[   23.912147][   T28] audit: type=1400 audit(1785389634.565:66): avc:  denied  { mounton } for  pid=306 comm="syz-executor397" path="/root/syzkaller.mSmDGQ/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   23.913948][  T306] request_module fs-gadgetfs succeeded, but still no fs?
[   23.936851][   T28] audit: type=1400 audit(1785389634.565:67): avc:  denied  { mount } for  pid=306 comm="syz-executor397" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   307] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_STRICTATIME, NULL) = 0
[pid   307] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   307] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   307] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   307] exit_group(0)               = ?
[pid   307] +++ exited with 0 +++
[pid   306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   306] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0
[pid   306] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   306] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   306] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   306] getdents64(3, 0x5555741a7750 /* 6 entries */, 32768) = 168
[pid   306] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   306] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   306] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   306] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   306] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   306] getdents64(4, 0x5555741af790 /* 2 entries */, 32768) = 48
[pid   306] getdents64(4, 0x5555741af790 /* 0 entries */, 32768) = 0
[pid   306] close(4)                    = 0
[pid   306] rmdir("./0/.incomplete")    = 0
[pid   306] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   306] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   306] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   306] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   306] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   306] getdents64(4, 0x5555741af790 /* 2 entries */, 32768) = 48
[pid   306] getdents64(4, 0x5555741af790 /* 0 entries */, 32768) = 0
[pid   306] close(4)                    = 0
[pid   306] rmdir("./0/.index")         = 0
[   23.950921][  T307] incfs: ino conflict with backing FS 9
[   23.966949][   T28] audit: type=1400 audit(1785389634.565:68): avc:  denied  { mounton } for  pid=306 comm="syz-executor397" path="/root/syzkaller.mSmDGQ/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
[   23.996810][  T306] ------------[ cut here ]------------
[   23.997136][   T28] audit: type=1400 audit(1785389634.575:69): avc:  denied  { mount } for  pid=306 comm="syz-executor397" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   24.002397][  T306] WARNING: CPU: 0 PID: 306 at fs/inode.c:335 drop_nlink+0xc5/0x110
[   24.024402][   T28] audit: type=1400 audit(1785389634.575:70): avc:  denied  { mounton } for  pid=306 comm="syz-executor397" path="/root/syzkaller.mSmDGQ/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
[   24.032228][  T306] Modules linked in:
[   24.058974][   T28] audit: type=1400 audit(1785389634.575:71): avc:  denied  { mounton } for  pid=306 comm="syz-executor397" path="/root/syzkaller.mSmDGQ/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14762 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   24.062764][  T306] CPU: 0 PID: 306 Comm: syz-executor397 Not tainted syzkaller #0
[   24.090616][   T28] audit: type=1400 audit(1785389634.575:72): avc:  denied  { unmount } for  pid=306 comm="syz-executor397" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   24.098248][  T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
[   24.098259][  T306] RIP: 0010:drop_nlink+0xc5/0x110
[   24.117972][   T28] audit: type=1400 audit(1785389634.595:73): avc:  denied  { mounton } for  pid=306 comm="syz-executor397" path="/dev/gadgetfs" dev="devtmpfs" ino=570 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   24.128076][  T306] Code: 1b 48 8d bb b8 04 00 00 be 08 00 00 00 e8 c3 b4 f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 5b 27 ab ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   24.128091][  T306] RSP: 0018:ffffc90000e77b60 EFLAGS: 00010293
[   24.181657][  T306] RAX: ffffffff81c63ee5 RBX: ffff888110736650 RCX: ffff88810f41e540
[   24.189619][  T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   24.197600][  T306] RBP: ffffc90000e77b88 R08: 0000000000000003 R09: 0000000000000004
[   24.205758][  T306] R10: dffffc0000000000 R11: fffff520001cef5c R12: dffffc0000000000
[   24.213764][  T306] R13: 1ffff110220e6cd3 R14: ffff888110736698 R15: 0000000000000000
[   24.221829][  T306] FS:  00005555741a63c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   24.230756][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.237367][  T306] CR2: 00005555741b7798 CR3: 0000000121866000 CR4: 00000000003506b0
[   24.245372][  T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.253357][  T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.261348][  T306] Call Trace:
[   24.264665][  T306]  <TASK>
[   24.267594][  T306]  shmem_rmdir+0x5b/0x90
[   24.271852][  T306]  vfs_rmdir+0x381/0x4f0
[   24.276527][  T306]  incfs_kill_sb+0xfe/0x210
[   24.281025][  T306]  deactivate_locked_super+0xb5/0x120
[   24.286445][  T306]  deactivate_super+0xaf/0xe0
[   24.291133][  T306]  cleanup_mnt+0x45e/0x4e0
[   24.295568][  T306]  __cleanup_mnt+0x19/0x20
[   24.300009][  T306]  task_work_run+0x1e1/0x250
[   24.304643][  T306]  ? __cfi_task_work_run+0x10/0x10
[   24.309843][  T306]  ? path_umount+0x345/0xf60
[   24.314483][  T306]  ? __kasan_slab_free+0x11/0x20
[   24.319438][  T306]  ptrace_notify+0x23f/0x270
[   24.324077][  T306]  ? __cfi_path_umount+0x10/0x10
[   24.329023][  T306]  ? __cfi_ptrace_notify+0x10/0x10
[   24.334272][  T306]  ? user_path_at_empty+0x162/0x1c0
[   24.339558][  T306]  ? __x64_sys_umount+0x12d/0x170
[   24.344600][  T306]  ? __cfi___x64_sys_umount+0x10/0x10
[   24.349971][  T306]  ? fpregs_restore_userregs+0x128/0x260
[   24.355616][  T306]  syscall_exit_work+0x84/0x140
[   24.360460][  T306]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   24.366619][  T306]  syscall_exit_to_user_mode+0xd/0x30
[   24.371995][  T306]  do_syscall_64+0x58/0xa0
[   24.376407][  T306]  ? clear_bhb_loop+0x30/0x80
[   24.381058][  T306]  ? clear_bhb_loop+0x30/0x80
[   24.385738][  T306]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   24.391643][  T306] RIP: 0033:0x7ff9a6317527
[   24.396046][  T306] 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
[   24.415672][  T306] RSP: 002b:00007ffc0907ca78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.424096][  T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff9a6317527
[   24.432075][  T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc0907cb30
[   24.440033][  T306] RBP: 00007ffc0907cb30 R08: 00007ffc0907db30 R09: 00000000ffffffff
[   24.448011][  T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc0907dba0
[   24.456123][  T306] R13: 00005555741a7720 R14: 00007ffc0907dba0 R15: 0000000000000001
[   24.464127][  T306]  </TASK>
[   24.467157][  T306] ---[ end trace 0000000000000000 ]---
[   24.472774][  T306] ==================================================================
[   24.480853][  T306] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   24.487081][  T306] Write of size 4 at addr 0000000000000170 by task syz-executor397/306
[   24.495295][  T306] 
[   24.497597][  T306] CPU: 0 PID: 306 Comm: syz-executor397 Tainted: G        W          syzkaller #0
[   24.506939][  T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
[   24.516975][  T306] Call Trace:
[   24.520235][  T306]  <TASK>
[   24.523151][  T306]  __dump_stack+0x21/0x24
[   24.527462][  T306]  dump_stack_lvl+0x110/0x170
[   24.532118][  T306]  ? __cfi_dump_stack_lvl+0x8/0x8
[   24.537141][  T306]  ? __cfi_call_rcu+0x10/0x10
[   24.541858][  T306]  ? ihold+0x20/0x60
[   24.545736][  T306]  ? ihold+0x20/0x60
[   24.549609][  T306]  print_report+0x3d/0x60
[   24.553926][  T306]  kasan_report+0x122/0x150
[   24.558425][  T306]  ? ihold+0x20/0x60
[   24.562308][  T306]  kasan_check_range+0x249/0x2a0
[   24.567271][  T306]  __kasan_check_write+0x14/0x20
[   24.572212][  T306]  ihold+0x20/0x60
[   24.575914][  T306]  vfs_rmdir+0x24c/0x4f0
[   24.580142][  T306]  incfs_kill_sb+0xfe/0x210
[   24.584630][  T306]  deactivate_locked_super+0xb5/0x120
[   24.589985][  T306]  deactivate_super+0xaf/0xe0
[   24.594662][  T306]  cleanup_mnt+0x45e/0x4e0
[   24.599071][  T306]  __cleanup_mnt+0x19/0x20
[   24.603552][  T306]  task_work_run+0x1e1/0x250
[   24.608151][  T306]  ? __cfi_task_work_run+0x10/0x10
[   24.613240][  T306]  ? path_umount+0x345/0xf60
[   24.617809][  T306]  ? __kasan_slab_free+0x11/0x20
[   24.622726][  T306]  ptrace_notify+0x23f/0x270
[   24.627307][  T306]  ? __cfi_path_umount+0x10/0x10
[   24.632256][  T306]  ? __cfi_ptrace_notify+0x10/0x10
[   24.637363][  T306]  ? user_path_at_empty+0x162/0x1c0
[   24.642541][  T306]  ? __x64_sys_umount+0x12d/0x170
[   24.647647][  T306]  ? __cfi___x64_sys_umount+0x10/0x10
[   24.652998][  T306]  ? fpregs_restore_userregs+0x128/0x260
[   24.658607][  T306]  syscall_exit_work+0x84/0x140
[   24.663431][  T306]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   24.669562][  T306]  syscall_exit_to_user_mode+0xd/0x30
[   24.674910][  T306]  do_syscall_64+0x58/0xa0
[   24.679312][  T306]  ? clear_bhb_loop+0x30/0x80
[   24.683978][  T306]  ? clear_bhb_loop+0x30/0x80
[   24.688630][  T306]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   24.694506][  T306] RIP: 0033:0x7ff9a6317527
[   24.698897][  T306] 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
[   24.718479][  T306] RSP: 002b:00007ffc0907ca78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.726868][  T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff9a6317527
[   24.734831][  T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc0907cb30
[   24.742779][  T306] RBP: 00007ffc0907cb30 R08: 00007ffc0907db30 R09: 00000000ffffffff
[   24.750735][  T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc0907dba0
[   24.758711][  T306] R13: 00005555741a7720 R14: 00007ffc0907dba0 R15: 0000000000000001
[   24.766687][  T306]  </TASK>
[   24.769693][  T306] ==================================================================
[   24.777974][  T306] Disabling lock debugging due to kernel taint
[   24.784173][  T306] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   24.791963][  T306] #PF: supervisor write access in kernel mode
[   24.798011][  T306] #PF: error_code(0x0002) - not-present page
[   24.803965][  T306] PGD 0 P4D 0 
[   24.807334][  T306] Oops: 0002 [#1] PREEMPT SMP KASAN
[   24.812511][  T306] CPU: 0 PID: 306 Comm: syz-executor397 Tainted: G    B   W          syzkaller #0
[   24.821693][  T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
[   24.831725][  T306] RIP: 0010:ihold+0x26/0x60
[   24.836233][  T306] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 c1 1e ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 00 ac f0 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 b1
[   24.855914][  T306] RSP: 0018:ffffc90000e77ba0 EFLAGS: 00010246
[   24.861963][  T306] RAX: ffff88810f41e500 RBX: 0000000000000000 RCX: ffff88810f41e540
[   24.869917][  T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   24.877955][  T306] RBP: ffffc90000e77bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[   24.886002][  T306] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88811073665c
[   24.893961][  T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.901925][  T306] FS:  00005555741a63c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   24.910846][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.917410][  T306] CR2: 0000000000000170 CR3: 0000000121866000 CR4: 00000000003506b0
[   24.925367][  T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.933323][  T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.941276][  T306] Call Trace:
[   24.944538][  T306]  <TASK>
[   24.947540][  T306]  vfs_rmdir+0x24c/0x4f0
[   24.951771][  T306]  incfs_kill_sb+0xfe/0x210
[   24.956263][  T306]  deactivate_locked_super+0xb5/0x120
[   24.961622][  T306]  deactivate_super+0xaf/0xe0
[   24.966293][  T306]  cleanup_mnt+0x45e/0x4e0
[   24.970709][  T306]  __cleanup_mnt+0x19/0x20
[   24.975117][  T306]  task_work_run+0x1e1/0x250
[   24.979693][  T306]  ? __cfi_task_work_run+0x10/0x10
[   24.984798][  T306]  ? path_umount+0x345/0xf60
[   24.989380][  T306]  ? __kasan_slab_free+0x11/0x20
[   24.994303][  T306]  ptrace_notify+0x23f/0x270
[   24.998888][  T306]  ? __cfi_path_umount+0x10/0x10
[   25.003808][  T306]  ? __cfi_ptrace_notify+0x10/0x10
[   25.008909][  T306]  ? user_path_at_empty+0x162/0x1c0
[   25.014092][  T306]  ? __x64_sys_umount+0x12d/0x170
[   25.019103][  T306]  ? __cfi___x64_sys_umount+0x10/0x10
[   25.024461][  T306]  ? fpregs_restore_userregs+0x128/0x260
[   25.030077][  T306]  syscall_exit_work+0x84/0x140
[   25.034910][  T306]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   25.041044][  T306]  syscall_exit_to_user_mode+0xd/0x30
[   25.046395][  T306]  do_syscall_64+0x58/0xa0
[   25.050794][  T306]  ? clear_bhb_loop+0x30/0x80
[   25.055450][  T306]  ? clear_bhb_loop+0x30/0x80
[   25.060108][  T306]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   25.066076][  T306] RIP: 0033:0x7ff9a6317527
[   25.070488][  T306] 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
[   25.090073][  T306] RSP: 002b:00007ffc0907ca78 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   25.098554][  T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff9a6317527
[   25.106508][  T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc0907cb30
[   25.114462][  T306] RBP: 00007ffc0907cb30 R08: 00007ffc0907db30 R09: 00000000ffffffff
[   25.122412][  T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc0907dba0
[   25.130361][  T306] R13: 00005555741a7720 R14: 00007ffc0907dba0 R15: 0000000000000001
[   25.138315][  T306]  </TASK>
[   25.141315][  T306] Modules linked in:
[   25.145202][  T306] CR2: 0000000000000170
[   25.149331][  T306] ---[ end trace 0000000000000000 ]---
[   25.154763][  T306] RIP: 0010:ihold+0x26/0x60
[   25.159256][  T306] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 c1 1e ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 00 ac f0 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 b1
[   25.178844][  T306] RSP: 0018:ffffc90000e77ba0 EFLAGS: 00010246
[   25.184893][  T306] RAX: ffff88810f41e500 RBX: 0000000000000000 RCX: ffff88810f41e540
[   25.192850][  T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   25.200802][  T306] RBP: ffffc90000e77bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[   25.208754][  T306] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88811073665c
[   25.216707][  T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   25.224745][  T306] FS:  00005555741a63c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   25.233654][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.240306][  T306] CR2: 0000000000000170 CR3: 0000000121866000 CR4: 00000000003506b0
[   25.248280][  T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.256235][  T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.264205][  T306] Kernel panic - not syncing: Fatal exception
[   25.270540][  T306] Kernel Offset: disabled
[   25.274846][  T306] Rebooting in 86400 seconds..