ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor618578662

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syzkaller
syzkaller login: [   14.005086][   T28] kauditd_printk_skb: 48 callbacks suppressed
[   14.005099][   T28] audit: type=1400 audit(1786153447.826:59): avc:  denied  { transition } for  pid=226 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
[   14.009202][   T28] audit: type=1400 audit(1786153447.826:60): avc:  denied  { noatsecure } for  pid=226 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.011817][   T28] audit: type=1400 audit(1786153447.826:61): avc:  denied  { write } for  pid=226 comm="sh" path="pipe:[14484]" dev="pipefs" ino=14484 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   14.014785][   T28] audit: type=1400 audit(1786153447.826:62): avc:  denied  { rlimitinh } for  pid=226 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.017546][   T28] audit: type=1400 audit(1786153447.826:63): avc:  denied  { siginh } for  pid=226 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.0.111' (ED25519) to the list of known hosts.
execve("ci2-android-6-1/syz-executor618578662", ["ci2-android-6-1/syz-executor618578662"], 0x7ffe6282c890 /* 10 vars */) = 0
brk(NULL)                               = 0x55555f73a000
brk(0x55555f73ad40)                     = 0x55555f73ad40
arch_prctl(ARCH_SET_FS, 0x55555f73a3c0) = 0
set_tid_address(0x55555f73a690)         = 306
set_robust_list(0x55555f73a6a0, 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-executor618578662", 4096) = 43
getrandom("\xff\xfb\x59\xde\xc3\xa1\xc6\x58", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55555f73ad40
brk(0x55555f75bd40)                     = 0x55555f75bd40
brk(0x55555f75c000)                     = 0x55555f75c000
mprotect(0x7f561511b000, 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("\x1c\x0e\xcb\x00\xdc\x4c\x8d\xb5", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.q8bO6B", 0700)       = 0
chmod("./syzkaller.q8bO6B", 0777)       = 0
chdir("./syzkaller.q8bO6B")             = 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=0x55555f73a690) = 307
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-6-1/strace-static-x86_64: Process 307 attached
[pid   307] set_robust_list(0x55555f73a6a0, 24) = 0
[pid   307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   307] getppid()                   = 0
[pid   307] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   307] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   307] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   307] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   307] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   307] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   307] unshare(CLONE_NEWNS)        = 0
[pid   307] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   307] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   307] unshare(CLONE_NEWCGROUP)    = 0
[pid   307] unshare(CLONE_NEWUTS)       = 0
[pid   307] unshare(CLONE_SYSVSEM)      = 0
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   307] getpid()                    = 1
[pid   307] 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   307] 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   307] unshare(CLONE_NEWNET)       = 0
[pid   307] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   307] write(3, "0 65535", 7)      = 7
[pid   307] close(3)                    = 0
[pid   307] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   307] write(3, "100000", 6)       = 6
[pid   307] close(3)                    = 0
[pid   307] mkdir("./syz-tmp", 0777)    = 0
[pid   307] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   307] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   307] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   307] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   307] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   307] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   307] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   307] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   307] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   307] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   307] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   307] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   307] 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   307] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   307] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   307] 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   307] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   307] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   307] chdir("/")                  = 0
[pid   307] umount2("./pivot", MNT_DETACH) = 0
[pid   307] chroot("./newroot")         = 0
[pid   307] chdir("/")                  = 0
[pid   307] mkdir("/dev/gadgetfs", 0777) = 0
[   23.418648][   T28] audit: type=1400 audit(1786153457.246:64): avc:  denied  { execmem } for  pid=306 comm="syz-executor618" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   23.438459][   T28] audit: type=1400 audit(1786153457.246:65): avc:  denied  { mounton } for  pid=307 comm="syz-executor618" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   307] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   307] mkdir("/dev/binderfs", 0777) = 0
[pid   307] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   307] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   307] mkdir("./0", 0777)          = 0
[pid   307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555f73a690) = 2
[pid   307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-6-1/strace-static-x86_64: Process 308 attached
[pid   308] set_robust_list(0x55555f73a6a0, 24) = 0
[pid   308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   308] chdir("./0")                = 0
[pid   308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   308] setpgid(0, 0)               = 0
[pid   308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   308] write(3, "1000", 4)         = 4
[pid   308] close(3)                    = 0
[pid   308] symlink("/dev/binderfs", "./binderfs") = 0
[pid   308] write(1, "executing program\n", 18) = 18
[pid   308] mkdirat(AT_FDCWD, "./bus", 0500) = 0
executing program
[pid   308] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_I_VERSION|MS_STRICTATIME, NULL) = 0
[pid   308] close(3)                    = -1 EBADF (Bad file descriptor)
[   23.460154][   T28] audit: type=1400 audit(1786153457.246:66): avc:  denied  { mounton } for  pid=307 comm="syz-executor618" path="/root/syzkaller.q8bO6B/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   23.461894][  T307] request_module fs-gadgetfs succeeded, but still no fs?
[   23.484774][   T28] audit: type=1400 audit(1786153457.266:67): avc:  denied  { mount } for  pid=307 comm="syz-executor618" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   23.500148][  T308] incfs: ino conflict with backing FS 9
[pid   308] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   308] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   308] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   308] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   308] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   308] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   308] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   308] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   308] exit_group(0)               = ?
[pid   308] +++ exited with 0 +++
[pid   307] --- 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   307] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0
[pid   307] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   307] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   307] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   307] getdents64(3, 0x55555f73b750 /* 6 entries */, 32768) = 168
[pid   307] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   307] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   307] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   307] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   307] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   307] getdents64(4, 0x55555f743790 /* 2 entries */, 32768) = 48
[pid   307] getdents64(4, 0x55555f743790 /* 0 entries */, 32768) = 0
[pid   307] close(4)                    = 0
[pid   307] rmdir("./0/.incomplete")    = 0
[pid   307] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   307] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   307] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   307] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   307] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   307] getdents64(4, 0x55555f743790 /* 2 entries */, 32768) = 48
[pid   307] getdents64(4, 0x55555f743790 /* 0 entries */, 32768) = 0
[pid   307] close(4)                    = 0
[pid   307] rmdir("./0/.index")         = 0
[   23.514330][   T28] audit: type=1400 audit(1786153457.266:68): avc:  denied  { mounton } for  pid=307 comm="syz-executor618" path="/root/syzkaller.q8bO6B/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
[   23.544509][   T28] audit: type=1400 audit(1786153457.266:69): avc:  denied  { mount } for  pid=307 comm="syz-executor618" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   23.566519][   T28] audit: type=1400 audit(1786153457.266:70): avc:  denied  { mounton } for  pid=307 comm="syz-executor618" path="/root/syzkaller.q8bO6B/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
[   23.566584][  T307] ------------[ cut here ]------------
[   23.593374][   T28] audit: type=1400 audit(1786153457.266:71): avc:  denied  { mounton } for  pid=307 comm="syz-executor618" path="/root/syzkaller.q8bO6B/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14672 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   23.598717][  T307] WARNING: CPU: 0 PID: 307 at fs/inode.c:335 drop_nlink+0xc5/0x110
[   23.626187][   T28] audit: type=1400 audit(1786153457.266:72): avc:  denied  { unmount } for  pid=307 comm="syz-executor618" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   23.634094][  T307] Modules linked in:
[   23.653931][   T28] audit: type=1400 audit(1786153457.286:73): avc:  denied  { mounton } for  pid=307 comm="syz-executor618" path="/dev/gadgetfs" dev="devtmpfs" ino=570 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   23.657579][  T307] CPU: 0 PID: 307 Comm: syz-executor618 Not tainted syzkaller #0
[   23.688106][  T307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   23.698156][  T307] RIP: 0010:drop_nlink+0xc5/0x110
[   23.703176][  T307] 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
[   23.722779][  T307] RSP: 0018:ffffc90000e07b60 EFLAGS: 00010293
[   23.728843][  T307] RAX: ffffffff81c63ee5 RBX: ffff888110080bd8 RCX: ffff88811038d100
[   23.736798][  T307] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   23.744762][  T307] RBP: ffffc90000e07b88 R08: 0000000000000003 R09: 0000000000000004
[   23.752731][  T307] R10: dffffc0000000000 R11: fffff520001c0f5c R12: dffffc0000000000
[   23.760696][  T307] R13: 1ffff11022010184 R14: ffff888110080c20 R15: 0000000000000000
[   23.768688][  T307] FS:  000055555f73a3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   23.777630][  T307] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.784205][  T307] CR2: 000055555f74b798 CR3: 0000000123b87000 CR4: 00000000003506b0
[   23.792188][  T307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.800172][  T307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.808151][  T307] Call Trace:
[   23.811408][  T307]  <TASK>
[   23.814313][  T307]  shmem_rmdir+0x5b/0x90
[   23.818551][  T307]  vfs_rmdir+0x381/0x4f0
[   23.822793][  T307]  incfs_kill_sb+0xfe/0x210
[   23.827272][  T307]  deactivate_locked_super+0xb5/0x120
[   23.832637][  T307]  deactivate_super+0xaf/0xe0
[   23.837309][  T307]  cleanup_mnt+0x45e/0x4e0
[   23.841740][  T307]  __cleanup_mnt+0x19/0x20
[   23.846130][  T307]  task_work_run+0x1e1/0x250
[   23.850714][  T307]  ? __cfi_task_work_run+0x10/0x10
[   23.855815][  T307]  ? path_umount+0x345/0xf60
[   23.860397][  T307]  ? __kasan_slab_free+0x11/0x20
[   23.865328][  T307]  ptrace_notify+0x23f/0x270
[   23.869925][  T307]  ? __cfi_path_umount+0x10/0x10
[   23.874857][  T307]  ? __cfi_ptrace_notify+0x10/0x10
[   23.879964][  T307]  ? user_path_at_empty+0x162/0x1c0
[   23.885152][  T307]  ? __x64_sys_umount+0x12d/0x170
[   23.890173][  T307]  ? __cfi___x64_sys_umount+0x10/0x10
[   23.895538][  T307]  ? fpregs_restore_userregs+0x128/0x260
[   23.901171][  T307]  syscall_exit_work+0x84/0x140
[   23.906012][  T307]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   23.912164][  T307]  syscall_exit_to_user_mode+0xd/0x30
[   23.917537][  T307]  do_syscall_64+0x58/0xa0
[   23.921948][  T307]  ? clear_bhb_loop+0x30/0x80
[   23.926599][  T307]  ? clear_bhb_loop+0x30/0x80
[   23.931280][  T307]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   23.937167][  T307] RIP: 0033:0x7f5615088527
[   23.941594][  T307] 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
[   23.961203][  T307] RSP: 002b:00007ffc5bad62d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   23.969607][  T307] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5615088527
[   23.977580][  T307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5bad6390
[   23.985530][  T307] RBP: 00007ffc5bad6390 R08: 00007ffc5bad7390 R09: 00000000ffffffff
[   23.993495][  T307] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc5bad7400
[   24.001473][  T307] R13: 000055555f73b720 R14: 00007ffc5bad7400 R15: 0000000000000001
[   24.009454][  T307]  </TASK>
[   24.012462][  T307] ---[ end trace 0000000000000000 ]---
[   24.018018][  T307] ==================================================================
[   24.026056][  T307] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   24.032273][  T307] Write of size 4 at addr 0000000000000170 by task syz-executor618/307
[   24.040482][  T307] 
[   24.042786][  T307] CPU: 0 PID: 307 Comm: syz-executor618 Tainted: G        W          syzkaller #0
[   24.051951][  T307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   24.061979][  T307] Call Trace:
[   24.065233][  T307]  <TASK>
[   24.068139][  T307]  __dump_stack+0x21/0x24
[   24.072448][  T307]  dump_stack_lvl+0x110/0x170
[   24.077097][  T307]  ? __cfi_dump_stack_lvl+0x8/0x8
[   24.082094][  T307]  ? __cfi_call_rcu+0x10/0x10
[   24.086748][  T307]  ? ihold+0x20/0x60
[   24.090621][  T307]  ? ihold+0x20/0x60
[   24.094491][  T307]  print_report+0x3d/0x60
[   24.098795][  T307]  kasan_report+0x122/0x150
[   24.103272][  T307]  ? ihold+0x20/0x60
[   24.107139][  T307]  kasan_check_range+0x249/0x2a0
[   24.112049][  T307]  __kasan_check_write+0x14/0x20
[   24.116960][  T307]  ihold+0x20/0x60
[   24.120672][  T307]  vfs_rmdir+0x24c/0x4f0
[   24.124890][  T307]  incfs_kill_sb+0xfe/0x210
[   24.129370][  T307]  deactivate_locked_super+0xb5/0x120
[   24.134724][  T307]  deactivate_super+0xaf/0xe0
[   24.139375][  T307]  cleanup_mnt+0x45e/0x4e0
[   24.143764][  T307]  __cleanup_mnt+0x19/0x20
[   24.148152][  T307]  task_work_run+0x1e1/0x250
[   24.152716][  T307]  ? __cfi_task_work_run+0x10/0x10
[   24.157797][  T307]  ? path_umount+0x345/0xf60
[   24.162379][  T307]  ? __kasan_slab_free+0x11/0x20
[   24.167293][  T307]  ptrace_notify+0x23f/0x270
[   24.171860][  T307]  ? __cfi_path_umount+0x10/0x10
[   24.176788][  T307]  ? __cfi_ptrace_notify+0x10/0x10
[   24.181891][  T307]  ? user_path_at_empty+0x162/0x1c0
[   24.187068][  T307]  ? __x64_sys_umount+0x12d/0x170
[   24.192075][  T307]  ? __cfi___x64_sys_umount+0x10/0x10
[   24.197433][  T307]  ? fpregs_restore_userregs+0x128/0x260
[   24.203047][  T307]  syscall_exit_work+0x84/0x140
[   24.207878][  T307]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   24.214030][  T307]  syscall_exit_to_user_mode+0xd/0x30
[   24.219392][  T307]  do_syscall_64+0x58/0xa0
[   24.223793][  T307]  ? clear_bhb_loop+0x30/0x80
[   24.228451][  T307]  ? clear_bhb_loop+0x30/0x80
[   24.233107][  T307]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   24.238980][  T307] RIP: 0033:0x7f5615088527
[   24.243390][  T307] 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
[   24.262971][  T307] RSP: 002b:00007ffc5bad62d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.271361][  T307] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5615088527
[   24.279315][  T307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5bad6390
[   24.287258][  T307] RBP: 00007ffc5bad6390 R08: 00007ffc5bad7390 R09: 00000000ffffffff
[   24.295201][  T307] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc5bad7400
[   24.303147][  T307] R13: 000055555f73b720 R14: 00007ffc5bad7400 R15: 0000000000000001
[   24.311119][  T307]  </TASK>
[   24.314119][  T307] ==================================================================
[   24.322209][  T307] Disabling lock debugging due to kernel taint
[   24.328473][  T307] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   24.336247][  T307] #PF: supervisor write access in kernel mode
[   24.342278][  T307] #PF: error_code(0x0002) - not-present page
[   24.348229][  T307] PGD 0 P4D 0 
[   24.351576][  T307] Oops: 0002 [#1] PREEMPT SMP KASAN
[   24.356759][  T307] CPU: 0 PID: 307 Comm: syz-executor618 Tainted: G    B   W          syzkaller #0
[   24.365921][  T307] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   24.375946][  T307] RIP: 0010:ihold+0x26/0x60
[   24.380431][  T307] 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
[   24.400012][  T307] RSP: 0018:ffffc90000e07ba0 EFLAGS: 00010246
[   24.406057][  T307] RAX: ffff88811038d100 RBX: 0000000000000000 RCX: ffff88811038d100
[   24.414002][  T307] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   24.421945][  T307] RBP: ffffc90000e07bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[   24.429904][  T307] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff888110080be4
[   24.437851][  T307] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.445795][  T307] FS:  000055555f73a3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   24.454695][  T307] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.461250][  T307] CR2: 0000000000000170 CR3: 0000000123b87000 CR4: 00000000003506b0
[   24.469198][  T307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.477142][  T307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.485084][  T307] Call Trace:
[   24.488339][  T307]  <TASK>
[   24.491245][  T307]  vfs_rmdir+0x24c/0x4f0
[   24.495466][  T307]  incfs_kill_sb+0xfe/0x210
[   24.499943][  T307]  deactivate_locked_super+0xb5/0x120
[   24.505290][  T307]  deactivate_super+0xaf/0xe0
[   24.509946][  T307]  cleanup_mnt+0x45e/0x4e0
[   24.514346][  T307]  __cleanup_mnt+0x19/0x20
[   24.518734][  T307]  task_work_run+0x1e1/0x250
[   24.523297][  T307]  ? __cfi_task_work_run+0x10/0x10
[   24.528382][  T307]  ? path_umount+0x345/0xf60
[   24.532949][  T307]  ? __kasan_slab_free+0x11/0x20
[   24.537861][  T307]  ptrace_notify+0x23f/0x270
[   24.542427][  T307]  ? __cfi_path_umount+0x10/0x10
[   24.547341][  T307]  ? __cfi_ptrace_notify+0x10/0x10
[   24.552438][  T307]  ? user_path_at_empty+0x162/0x1c0
[   24.557611][  T307]  ? __x64_sys_umount+0x12d/0x170
[   24.562608][  T307]  ? __cfi___x64_sys_umount+0x10/0x10
[   24.567952][  T307]  ? fpregs_restore_userregs+0x128/0x260
[   24.573559][  T307]  syscall_exit_work+0x84/0x140
[   24.578381][  T307]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   24.584510][  T307]  syscall_exit_to_user_mode+0xd/0x30
[   24.589870][  T307]  do_syscall_64+0x58/0xa0
[   24.594262][  T307]  ? clear_bhb_loop+0x30/0x80
[   24.598910][  T307]  ? clear_bhb_loop+0x30/0x80
[   24.603558][  T307]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   24.609426][  T307] RIP: 0033:0x7f5615088527
[   24.613814][  T307] 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
[   24.633388][  T307] RSP: 002b:00007ffc5bad62d8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.641774][  T307] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5615088527
[   24.649720][  T307] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5bad6390
[   24.657677][  T307] RBP: 00007ffc5bad6390 R08: 00007ffc5bad7390 R09: 00000000ffffffff
[   24.665620][  T307] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc5bad7400
[   24.673563][  T307] R13: 000055555f73b720 R14: 00007ffc5bad7400 R15: 0000000000000001
[   24.681515][  T307]  </TASK>
[   24.684512][  T307] Modules linked in:
[   24.688391][  T307] CR2: 0000000000000170
[   24.692516][  T307] ---[ end trace 0000000000000000 ]---
[   24.697939][  T307] RIP: 0010:ihold+0x26/0x60
[   24.702422][  T307] 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
[   24.721996][  T307] RSP: 0018:ffffc90000e07ba0 EFLAGS: 00010246
[   24.728033][  T307] RAX: ffff88811038d100 RBX: 0000000000000000 RCX: ffff88811038d100
[   24.735977][  T307] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   24.743923][  T307] RBP: ffffc90000e07bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[   24.751866][  T307] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff888110080be4
[   24.759811][  T307] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   24.767756][  T307] FS:  000055555f73a3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   24.776657][  T307] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.783224][  T307] CR2: 0000000000000170 CR3: 0000000123b87000 CR4: 00000000003506b0
[   24.791171][  T307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.799114][  T307] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.807059][  T307] Kernel panic - not syncing: Fatal exception
[   24.813321][  T307] Kernel Offset: disabled
[   24.817624][  T307] Rebooting in 86400 seconds..