ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor2092792497

<...>

syzkaller
syzkaller login: [    8.773444][  T109] udevd (109) used greatest stack depth: 22888 bytes left
[   15.208530][   T30] audit: type=1400 audit(1786002645.884:59): avc:  denied  { transition } for  pid=223 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
[   15.216391][   T30] audit: type=1400 audit(1786002645.884:60): avc:  denied  { noatsecure } for  pid=223 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   15.224399][   T30] audit: type=1400 audit(1786002645.904:61): avc:  denied  { write } for  pid=223 comm="sh" path="pipe:[14295]" dev="pipefs" ino=14295 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   15.240055][   T30] audit: type=1400 audit(1786002645.904:62): avc:  denied  { rlimitinh } for  pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   15.260112][   T30] audit: type=1400 audit(1786002645.904:63): 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
[   16.977090][  T230] sshd-session (230) used greatest stack depth: 22824 bytes left
Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hosts.
execve("ci2-android-5-15/syz-executor2092792497", ["ci2-android-5-15/syz-executor2092792497"], 0x7ffc8374c0d0 /* 10 vars */) = 0
brk(NULL)                               = 0x55558522b000
brk(0x55558522bd40)                     = 0x55558522bd40
arch_prctl(ARCH_SET_FS, 0x55558522b3c0) = 0
set_tid_address(0x55558522b690)         = 303
set_robust_list(0x55558522b6a0, 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-executor2092792497", 4096) = 45
getrandom("\x16\x8d\x08\xcf\xb8\x87\xf3\xbd", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558522bd40
brk(0x55558524cd40)                     = 0x55558524cd40
brk(0x55558524d000)                     = 0x55558524d000
mprotect(0x7f6454ddc000, 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("\x5a\x49\x8f\xc2\x5b\x4c\x24\x7d", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.uPW5u7", 0700)       = 0
chmod("./syzkaller.uPW5u7", 0777)       = 0
chdir("./syzkaller.uPW5u7")             = 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=0x55558522b690) = 304
ci2-android-5-15/strace-static-x86_64: Process 304 attached
[pid   304] set_robust_list(0x55558522b6a0, 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, [] <unfinished ...>
[pid   304] <... unshare resumed>)      = 0
[pid   304] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL <unfinished ...>
[pid   303] <... rt_sigprocmask resumed>, NULL, 8) = 0
[pid   304] <... mount resumed>)        = 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
[   25.053840][   T30] audit: type=1400 audit(1786002655.734:64): avc:  denied  { execmem } for  pid=303 comm="syz-executor209" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   25.080447][   T30] audit: type=1400 audit(1786002655.764:65): avc:  denied  { mounton } for  pid=304 comm="syz-executor209" 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
[pid   304] mkdir("/dev/gadgetfs", 0777) = 0
[   25.119122][   T30] audit: type=1400 audit(1786002655.794:66): avc:  denied  { mounton } for  pid=304 comm="syz-executor209" path="/root/syzkaller.uPW5u7/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   25.144521][   T30] audit: type=1400 audit(1786002655.794:67): avc:  denied  { mount } for  pid=304 comm="syz-executor209" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[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] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558522b690) = 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(0x55558522b6a0, 24) = 0
[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] futex(0x7f6454de2b2c, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   305] rt_sigaction(SIGRT_1, {sa_handler=0x7f6454d44010, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f6454d35fc0}, NULL, 8) = 0
[pid   305] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid   305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f6454cf0000
[pid   305] mprotect(0x7f6454cf1000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f6454d10990, parent_tid=0x7f6454d10990, exit_signal=0, stack=0x7f6454cf0000, stack_size=0x20300, tls=0x7f6454d106c0} => {parent_tid=[3]}, 88) = 3
[pid   305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   305] futex(0x7f6454de2b28, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   305] futex(0x7f6454de2b2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}ci2-android-5-15/strace-static-x86_64: Process 306 attached
 <unfinished ...>
[pid   306] set_robust_list(0x7f6454d109a0, 24) = 0
[pid   306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   306] mkdir("./bus", 000)         = 0
[pid   306] futex(0x7f6454de2b2c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   305] <... futex resumed>)        = 0
[pid   305] futex(0x7f6454de2b28, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid   305] futex(0x7f6454de2b2c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   306] <... futex resumed>)        = 1
[   25.167164][   T30] audit: type=1400 audit(1786002655.834:68): avc:  denied  { mounton } for  pid=304 comm="syz-executor209" path="/root/syzkaller.uPW5u7/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
[   25.170275][  T304] request_module fs-gadgetfs succeeded, but still no fs?
[pid   306] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_I_VERSION|MS_STRICTATIME, NULL) = 0
[pid   306] futex(0x7f6454de2b2c, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   305] <... futex resumed>)        = 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   306] <... futex resumed>)        = ?
[pid   306] +++ exited with 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=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, 0x55558522c750 /* 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, 0x555585234790 /* 2 entries */, 32768) = 48
[pid   304] getdents64(4, 0x555585234790 /* 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, 0x555585234790 /* 2 entries */, 32768) = 48
[pid   304] getdents64(4, 0x555585234790 /* 0 entries */, 32768) = 0
[pid   304] close(4)                    = 0
[pid   304] rmdir("./0/.index")         = 0
[   25.192911][   T30] audit: type=1400 audit(1786002655.834:69): avc:  denied  { mount } for  pid=304 comm="syz-executor209" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   25.218820][  T306] incfs: ino conflict with backing FS 9
[   25.222073][   T30] audit: type=1400 audit(1786002655.834:70): avc:  denied  { mounton } for  pid=304 comm="syz-executor209" path="/root/syzkaller.uPW5u7/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
[   25.254592][   T30] audit: type=1400 audit(1786002655.834:71): avc:  denied  { mounton } for  pid=304 comm="syz-executor209" path="/root/syzkaller.uPW5u7/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14459 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   25.254818][  T304] ------------[ cut here ]------------
[   25.282659][   T30] audit: type=1400 audit(1786002655.834:72): avc:  denied  { unmount } for  pid=304 comm="syz-executor209" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   25.282691][   T30] audit: type=1400 audit(1786002655.854:73): avc:  denied  { mounton } for  pid=304 comm="syz-executor209" path="/dev/gadgetfs" dev="devtmpfs" ino=556 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.332345][  T304] WARNING: CPU: 0 PID: 304 at fs/inode.c:335 drop_nlink+0xc5/0x110
[   25.340260][  T304] Modules linked in:
[   25.344372][  T304] CPU: 0 PID: 304 Comm: syz-executor209 Not tainted syzkaller #0
[   25.352647][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   25.362851][  T304] RIP: 0010:drop_nlink+0xc5/0x110
[   25.367990][  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
[   25.387725][  T304] RSP: 0018:ffffc900009b7bd0 EFLAGS: 00010293
[   25.393841][  T304] RAX: ffffffff81b71ca5 RBX: ffff888125e56e88 RCX: ffff88811eb1e2c0
[   25.401985][  T304] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   25.410213][  T304] RBP: ffffc900009b7bf8 R08: 0000000000000003 R09: 0000000000000004
[   25.418362][  T304] R10: dffffc0000000000 R11: fffff52000136f68 R12: dffffc0000000000
[   25.426409][  T304] R13: 1ffff11024bcadda R14: ffff888125e56ed0 R15: 0000000000000000
[   25.434425][  T304] FS:  000055558522b3c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   25.443623][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.450361][  T304] CR2: 000055558523c798 CR3: 0000000125da2000 CR4: 00000000003506b0
[   25.458594][  T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.466610][  T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.474796][  T304] Call Trace:
[   25.478364][  T304]  <TASK>
[   25.481477][  T304]  shmem_rmdir+0x5b/0x90
[   25.485862][  T304]  vfs_rmdir+0x1ae/0x450
[   25.490244][  T304]  incfs_kill_sb+0xfe/0x210
[   25.494811][  T304]  deactivate_locked_super+0xa0/0x100
[   25.500337][  T304]  deactivate_super+0xaf/0xe0
[   25.505315][  T304]  cleanup_mnt+0x44f/0x500
[   25.509935][  T304]  __cleanup_mnt+0x19/0x20
[   25.514658][  T304]  task_work_run+0x127/0x190
[   25.519575][  T304]  ptrace_notify+0x230/0x270
[   25.524451][  T304]  ? do_notify_parent+0x830/0x830
[   25.529488][  T304]  ? user_path_at_empty+0x162/0x1c0
[   25.534830][  T304]  ? __x64_sys_umount+0x12d/0x170
[   25.540121][  T304]  ? path_umount+0xfa0/0xfa0
[   25.544837][  T304]  syscall_exit_work+0x87/0x160
[   25.549907][  T304]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   25.556317][  T304]  syscall_exit_to_user_mode+0xd/0x30
[   25.561765][  T304]  do_syscall_64+0x58/0xa0
[   25.566223][  T304]  ? clear_bhb_loop+0x50/0xa0
[   25.570912][  T304]  ? clear_bhb_loop+0x50/0xa0
[   25.575691][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.581595][  T304] RIP: 0033:0x7f6454d31107
[   25.586054][  T304] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 a8 09 0b 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 d0 ff ff ff f7 d8 64 89 02 b8
[   25.605785][  T304] RSP: 002b:00007ffe6e6f6dc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.614388][  T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6454d31107
[   25.623018][  T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe6e6f6e80
[   25.630991][  T304] RBP: 00007ffe6e6f6e80 R08: 00007ffe6e6f7e80 R09: 00000000ffffffff
[   25.639111][  T304] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe6e6f7f40
[   25.647742][  T304] R13: 000055558522c720 R14: 000000000000625f R15: 00007ffe6e6f7f40
[   25.656235][  T304]  </TASK>
[   25.659300][  T304] ---[ end trace e82f59997a8c2661 ]---
[   25.665064][  T304] ==================================================================
[   25.673432][  T304] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   25.679757][  T304] Write of size 4 at addr 0000000000000170 by task syz-executor209/304
[   25.688091][  T304] 
[   25.690412][  T304] CPU: 0 PID: 304 Comm: syz-executor209 Tainted: G        W         syzkaller #0
[   25.699650][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   25.709814][  T304] Call Trace:
[   25.713214][  T304]  <TASK>
[   25.716185][  T304]  __dump_stack+0x21/0x30
[   25.720687][  T304]  dump_stack_lvl+0x110/0x170
[   25.725368][  T304]  ? show_regs_print_info+0x20/0x20
[   25.730740][  T304]  ? _raw_spin_lock+0x94/0xf0
[   25.735549][  T304]  ? _raw_spin_trylock_bh+0x150/0x150
[   25.741136][  T304]  ? ihold+0x20/0x60
[   25.745036][  T304]  kasan_report+0xcc/0x150
[   25.749446][  T304]  ? ihold+0x20/0x60
[   25.753333][  T304]  kasan_check_range+0x249/0x2a0
[   25.758359][  T304]  __kasan_check_write+0x14/0x20
[   25.763456][  T304]  ihold+0x20/0x60
[   25.767161][  T304]  vfs_rmdir+0x23d/0x450
[   25.771388][  T304]  incfs_kill_sb+0xfe/0x210
[   25.775966][  T304]  deactivate_locked_super+0xa0/0x100
[   25.781356][  T304]  deactivate_super+0xaf/0xe0
[   25.786071][  T304]  cleanup_mnt+0x44f/0x500
[   25.790483][  T304]  __cleanup_mnt+0x19/0x20
[   25.794892][  T304]  task_work_run+0x127/0x190
[   25.799481][  T304]  ptrace_notify+0x230/0x270
[   25.804146][  T304]  ? do_notify_parent+0x830/0x830
[   25.809952][  T304]  ? user_path_at_empty+0x162/0x1c0
[   25.816055][  T304]  ? __x64_sys_umount+0x12d/0x170
[   25.821181][  T304]  ? path_umount+0xfa0/0xfa0
[   25.826060][  T304]  syscall_exit_work+0x87/0x160
[   25.831026][  T304]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   25.837567][  T304]  syscall_exit_to_user_mode+0xd/0x30
[   25.843083][  T304]  do_syscall_64+0x58/0xa0
[   25.848162][  T304]  ? clear_bhb_loop+0x50/0xa0
[   25.852963][  T304]  ? clear_bhb_loop+0x50/0xa0
[   25.857858][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   25.863776][  T304] RIP: 0033:0x7f6454d31107
[   25.868284][  T304] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 a8 09 0b 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 d0 ff ff ff f7 d8 64 89 02 b8
[   25.888942][  T304] RSP: 002b:00007ffe6e6f6dc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.897353][  T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6454d31107
[   25.905333][  T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe6e6f6e80
[   25.913385][  T304] RBP: 00007ffe6e6f6e80 R08: 00007ffe6e6f7e80 R09: 00000000ffffffff
[   25.921816][  T304] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe6e6f7f40
[   25.929986][  T304] R13: 000055558522c720 R14: 000000000000625f R15: 00007ffe6e6f7f40
[   25.938846][  T304]  </TASK>
[   25.941883][  T304] ==================================================================
[   25.950036][  T304] Disabling lock debugging due to kernel taint
[   25.956436][  T304] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   25.964345][  T304] #PF: supervisor write access in kernel mode
[   25.970514][  T304] #PF: error_code(0x0002) - not-present page
[   25.976924][  T304] PGD 0 P4D 0 
[   25.980836][  T304] Oops: 0002 [#1] PREEMPT SMP KASAN
[   25.986045][  T304] CPU: 0 PID: 304 Comm: syz-executor209 Tainted: G    B   W         syzkaller #0
[   25.995438][  T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   26.006078][  T304] RIP: 0010:ihold+0x26/0x60
[   26.010707][  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
[   26.030595][  T304] RSP: 0018:ffffc900009b7c10 EFLAGS: 00010246
[   26.037021][  T304] RAX: ffff88811eb1e200 RBX: 0000000000000000 RCX: ffff88811eb1e2c0
[   26.045009][  T304] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   26.053080][  T304] RBP: ffffc900009b7c20 R08: 0000000000000003 R09: 0000000000000004
[   26.062710][  T304] R10: dffffc0000000000 R11: fffffbfff0e18e4c R12: 1ffff11024143dc0
[   26.070793][  T304] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   26.078869][  T304] FS:  000055558522b3c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   26.088627][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.095821][  T304] CR2: 0000000000000170 CR3: 0000000125da2000 CR4: 00000000003506b0
[   26.104495][  T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.112837][  T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.121077][  T304] Call Trace:
[   26.124465][  T304]  <TASK>
[   26.127395][  T304]  vfs_rmdir+0x23d/0x450
[   26.131875][  T304]  incfs_kill_sb+0xfe/0x210
[   26.137464][  T304]  deactivate_locked_super+0xa0/0x100
[   26.143323][  T304]  deactivate_super+0xaf/0xe0
[   26.148111][  T304]  cleanup_mnt+0x44f/0x500
[   26.152581][  T304]  __cleanup_mnt+0x19/0x20
[   26.157217][  T304]  task_work_run+0x127/0x190
[   26.161905][  T304]  ptrace_notify+0x230/0x270
[   26.166509][  T304]  ? do_notify_parent+0x830/0x830
[   26.171715][  T304]  ? user_path_at_empty+0x162/0x1c0
[   26.176923][  T304]  ? __x64_sys_umount+0x12d/0x170
[   26.181962][  T304]  ? path_umount+0xfa0/0xfa0
[   26.187006][  T304]  syscall_exit_work+0x87/0x160
[   26.192140][  T304]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   26.198616][  T304]  syscall_exit_to_user_mode+0xd/0x30
[   26.204194][  T304]  do_syscall_64+0x58/0xa0
[   26.208940][  T304]  ? clear_bhb_loop+0x50/0xa0
[   26.214090][  T304]  ? clear_bhb_loop+0x50/0xa0
[   26.219186][  T304]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   26.225283][  T304] RIP: 0033:0x7f6454d31107
[   26.229833][  T304] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 a8 09 0b 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 d0 ff ff ff f7 d8 64 89 02 b8
[   26.250509][  T304] RSP: 002b:00007ffe6e6f6dc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   26.259277][  T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6454d31107
[   26.267270][  T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe6e6f6e80
[   26.275438][  T304] RBP: 00007ffe6e6f6e80 R08: 00007ffe6e6f7e80 R09: 00000000ffffffff
[   26.283856][  T304] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe6e6f7f40
[   26.292042][  T304] R13: 000055558522c720 R14: 000000000000625f R15: 00007ffe6e6f7f40
[   26.300038][  T304]  </TASK>
[   26.303073][  T304] Modules linked in:
[   26.307137][  T304] CR2: 0000000000000170
[   26.311294][  T304] ---[ end trace e82f59997a8c2662 ]---
[   26.316944][  T304] RIP: 0010:ihold+0x26/0x60
[   26.321469][  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
[   26.341522][  T304] RSP: 0018:ffffc900009b7c10 EFLAGS: 00010246
[   26.347603][  T304] RAX: ffff88811eb1e200 RBX: 0000000000000000 RCX: ffff88811eb1e2c0
[   26.355752][  T304] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   26.363818][  T304] RBP: ffffc900009b7c20 R08: 0000000000000003 R09: 0000000000000004
[   26.371810][  T304] R10: dffffc0000000000 R11: fffffbfff0e18e4c R12: 1ffff11024143dc0
[   26.379783][  T304] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   26.388430][  T304] FS:  000055558522b3c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   26.397376][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.404194][  T304] CR2: 0000000000000170 CR3: 0000000125da2000 CR4: 00000000003506b0
[   26.412186][  T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.420329][  T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.428479][  T304] Kernel panic - not syncing: Fatal exception
[   26.434768][  T304] Kernel Offset: disabled
[   26.439379][  T304] Rebooting in 86400 seconds..