ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor272193767

<...>


syzkaller
syzkaller login: [   22.326992][   T28] kauditd_printk_skb: 31 callbacks suppressed
[   22.327005][   T28] audit: type=1400 audit(1785821384.923:59): avc:  denied  { transition } for  pid=266 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
[   22.331732][   T28] audit: type=1400 audit(1785821384.923:60): avc:  denied  { noatsecure } for  pid=266 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.335939][   T28] audit: type=1400 audit(1785821384.943:61): avc:  denied  { write } for  pid=266 comm="sh" path="pipe:[13764]" dev="pipefs" ino=13764 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   22.339664][   T28] audit: type=1400 audit(1785821384.943:62): avc:  denied  { rlimitinh } for  pid=266 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.342802][   T28] audit: type=1400 audit(1785821384.943:63): avc:  denied  { siginh } for  pid=266 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.0.225' (ED25519) to the list of known hosts.
execve("ci2-android-6-1/syz-executor272193767", ["ci2-android-6-1/syz-executor272193767"], 0x7ffdfadb9230 /* 10 vars */) = 0
brk(NULL)                               = 0x55558a1aa000
brk(0x55558a1aad40)                     = 0x55558a1aad40
arch_prctl(ARCH_SET_FS, 0x55558a1aa3c0) = 0
set_tid_address(0x55558a1aa690)         = 304
set_robust_list(0x55558a1aa6a0, 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-executor272193767", 4096) = 43
getrandom("\x4a\xa8\xd9\xd9\x0b\x32\x76\x3f", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558a1aad40
brk(0x55558a1cbd40)                     = 0x55558a1cbd40
brk(0x55558a1cc000)                     = 0x55558a1cc000
mprotect(0x7f78b651f000, 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("\xf7\x70\x7a\x37\x97\x25\xd8\xc1", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.F0cj82", 0700)       = 0
chmod("./syzkaller.F0cj82", 0777)       = 0
chdir("./syzkaller.F0cj82")             = 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=0x55558a1aa690) = 305
ci2-android-6-1/strace-static-x86_64: Process 305 attached
[pid   304] rt_sigprocmask(SIG_SETMASK, [] <unfinished ...>
[pid   305] set_robust_list(0x55558a1aa6a0, 24) = 0
[pid   305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   305] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   304] <... rt_sigprocmask resumed>, NULL, 8) = 0
[pid   305] <... prctl resumed>)        = 0
[pid   305] getppid()                   = 0
[pid   305] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   305] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   305] unshare(CLONE_NEWNS)        = 0
[pid   305] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   305] unshare(CLONE_NEWCGROUP)    = 0
[pid   305] unshare(CLONE_NEWUTS)       = 0
[pid   305] unshare(CLONE_SYSVSEM)      = 0
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   305] getpid()                    = 1
[pid   305] 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   305] 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   305] unshare(CLONE_NEWNET)       = 0
[pid   305] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   305] write(3, "0 65535", 7)      = 7
[pid   305] close(3)                    = 0
[pid   305] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   305] write(3, "100000", 6)       = 6
[pid   305] close(3)                    = 0
[pid   305] mkdir("./syz-tmp", 0777)    = 0
[   33.032415][   T28] audit: type=1400 audit(1785821395.633:64): avc:  denied  { execmem } for  pid=304 comm="syz-executor272" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   33.055013][   T28] audit: type=1400 audit(1785821395.653:65): avc:  denied  { mounton } for  pid=305 comm="syz-executor272" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   305] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   305] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   305] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   305] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   305] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   305] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   305] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] 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   305] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   305] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   305] 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   305] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   305] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   305] chdir("/")                  = 0
[pid   305] umount2("./pivot", MNT_DETACH) = 0
[pid   305] chroot("./newroot")         = 0
[pid   305] chdir("/")                  = 0
[pid   305] mkdir("/dev/gadgetfs", 0777) = 0
[   33.086815][   T28] audit: type=1400 audit(1785821395.683:66): avc:  denied  { mounton } for  pid=305 comm="syz-executor272" path="/root/syzkaller.F0cj82/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   33.111345][   T28] audit: type=1400 audit(1785821395.683:67): avc:  denied  { mount } for  pid=305 comm="syz-executor272" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   305] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   305] mkdir("/dev/binderfs", 0777) = 0
[pid   305] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   305] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   305] mkdir("./0", 0777)          = 0
[pid   305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558a1aa690) = 2
[pid   305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-6-1/strace-static-x86_64: Process 306 attached
[pid   306] set_robust_list(0x55558a1aa6a0, 24) = 0
[pid   306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   306] chdir("./0")                = 0
[pid   306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   306] setpgid(0, 0)               = 0
[pid   306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   306] write(3, "1000", 4)         = 4
[pid   306] close(3)                    = 0
[pid   306] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid   306] write(1, "executing program\n", 18) = 18
[pid   306] mkdir("./bus", 0436)        = 0
[   33.118736][  T305] request_module fs-gadgetfs succeeded, but still no fs?
[   33.133473][   T28] audit: type=1400 audit(1785821395.693:68): avc:  denied  { mounton } for  pid=305 comm="syz-executor272" path="/root/syzkaller.F0cj82/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
[   33.165801][   T28] audit: type=1400 audit(1785821395.693:69): avc:  denied  { mount } for  pid=305 comm="syz-executor272" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[pid   306] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_STRICTATIME, NULL) = 0
[pid   306] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   306] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   306] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   306] exit_group(0)               = ?
[pid   306] +++ exited with 0 +++
[pid   305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
[pid   305] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   305] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   305] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   305] getdents64(3, 0x55558a1ab750 /* 6 entries */, 32768) = 168
[pid   305] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   305] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   305] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   305] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   305] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   305] getdents64(4, 0x55558a1b3790 /* 2 entries */, 32768) = 48
[pid   305] getdents64(4, 0x55558a1b3790 /* 0 entries */, 32768) = 0
[pid   305] close(4)                    = 0
[pid   305] rmdir("./0/.incomplete")    = 0
[pid   305] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   305] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   305] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   305] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   305] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   305] getdents64(4, 0x55558a1b3790 /* 2 entries */, 32768) = 48
[pid   305] getdents64(4, 0x55558a1b3790 /* 0 entries */, 32768) = 0
[pid   305] close(4)                    = 0
[pid   305] rmdir("./0/.index")         = 0
[   33.174820][  T306] incfs: ino conflict with backing FS 9
[   33.188271][   T28] audit: type=1400 audit(1785821395.693:70): avc:  denied  { mounton } for  pid=305 comm="syz-executor272" path="/root/syzkaller.F0cj82/syz-tmp/newroot/selinux" dev="tmpfs" ino=5 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1
[   33.219681][   T28] audit: type=1400 audit(1785821395.693:71): avc:  denied  { mounton } for  pid=305 comm="syz-executor272" path="/root/syzkaller.F0cj82/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
[   33.246484][   T28] audit: type=1400 audit(1785821395.693:72): avc:  denied  { mounton } for  pid=305 comm="syz-executor272" path="/root/syzkaller.F0cj82/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=15187 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   33.247345][  T305] ------------[ cut here ]------------
[   33.274069][   T28] audit: type=1400 audit(1785821395.703:73): avc:  denied  { unmount } for  pid=305 comm="syz-executor272" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   33.279560][  T305] WARNING: CPU: 0 PID: 305 at fs/inode.c:335 drop_nlink+0xc5/0x110
[   33.307282][  T305] Modules linked in:
[   33.311273][  T305] CPU: 0 PID: 305 Comm: syz-executor272 Not tainted syzkaller #0
[   33.319068][  T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   33.329186][  T305] RIP: 0010:drop_nlink+0xc5/0x110
[   33.334248][  T305] 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
[   33.353948][  T305] RSP: 0018:ffffc90000e27b60 EFLAGS: 00010293
[   33.360088][  T305] RAX: ffffffff81c63ee5 RBX: ffff888110000810 RCX: ffff88810fc4bcc0
[   33.368077][  T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   33.376124][  T305] RBP: ffffc90000e27b88 R08: 0000000000000003 R09: 0000000000000004
[   33.384147][  T305] R10: dffffc0000000000 R11: fffff520001c4f5c R12: dffffc0000000000
[   33.392179][  T305] R13: 1ffff1102200010b R14: ffff888110000858 R15: 0000000000000000
[   33.400190][  T305] FS:  000055558a1aa3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   33.409182][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.415790][  T305] CR2: 000055558a1bb798 CR3: 0000000122d41000 CR4: 00000000003506b0
[   33.423855][  T305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.431903][  T305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.439984][  T305] Call Trace:
[   33.443289][  T305]  <TASK>
[   33.446223][  T305]  shmem_rmdir+0x5b/0x90
[   33.450541][  T305]  vfs_rmdir+0x381/0x4f0
[   33.454815][  T305]  incfs_kill_sb+0xfe/0x210
[   33.459362][  T305]  deactivate_locked_super+0xb5/0x120
[   33.464765][  T305]  deactivate_super+0xaf/0xe0
[   33.469494][  T305]  cleanup_mnt+0x45e/0x4e0
[   33.473931][  T305]  __cleanup_mnt+0x19/0x20
[   33.478349][  T305]  task_work_run+0x1e1/0x250
[   33.482994][  T305]  ? __cfi_task_work_run+0x10/0x10
[   33.488120][  T305]  ? path_umount+0x345/0xf60
[   33.492758][  T305]  ? __kasan_slab_free+0x11/0x20
[   33.497724][  T305]  ptrace_notify+0x23f/0x270
[   33.502370][  T305]  ? __cfi_path_umount+0x10/0x10
[   33.507339][  T305]  ? __cfi_ptrace_notify+0x10/0x10
[   33.512507][  T305]  ? user_path_at_empty+0x162/0x1c0
[   33.517729][  T305]  ? __x64_sys_umount+0x12d/0x170
[   33.522803][  T305]  ? __cfi___x64_sys_umount+0x10/0x10
[   33.528202][  T305]  ? fpregs_restore_userregs+0x128/0x260
[   33.533919][  T305]  syscall_exit_work+0x84/0x140
[   33.538843][  T305]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   33.545018][  T305]  syscall_exit_to_user_mode+0xd/0x30
[   33.550442][  T305]  do_syscall_64+0x58/0xa0
[   33.554905][  T305]  ? clear_bhb_loop+0x30/0x80
[   33.559622][  T305]  ? clear_bhb_loop+0x30/0x80
[   33.564314][  T305]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   33.570270][  T305] RIP: 0033:0x7f78b648c527
[   33.574723][  T305] 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
[   33.594401][  T305] RSP: 002b:00007ffd4b19dfc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   33.602905][  T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f78b648c527
[   33.610935][  T305] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4b19e080
[   33.618976][  T305] RBP: 00007ffd4b19e080 R08: 00007ffd4b19f080 R09: 00000000ffffffff
[   33.626966][  T305] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4b19f0f0
[   33.634989][  T305] R13: 000055558a1ab720 R14: 00007ffd4b19f0f0 R15: 0000000000000001
[   33.643033][  T305]  </TASK>
[   33.646088][  T305] ---[ end trace 0000000000000000 ]---
[   33.651704][  T305] ==================================================================
[   33.659782][  T305] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   33.666026][  T305] Write of size 4 at addr 0000000000000170 by task syz-executor272/305
[   33.674258][  T305] 
[   33.676583][  T305] CPU: 0 PID: 305 Comm: syz-executor272 Tainted: G        W          syzkaller #0
[   33.685798][  T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   33.695847][  T305] Call Trace:
[   33.699128][  T305]  <TASK>
[   33.702059][  T305]  __dump_stack+0x21/0x24
[   33.706411][  T305]  dump_stack_lvl+0x110/0x170
[   33.711264][  T305]  ? __cfi_dump_stack_lvl+0x8/0x8
[   33.716288][  T305]  ? __cfi_call_rcu+0x10/0x10
[   33.720984][  T305]  ? ihold+0x20/0x60
[   33.724880][  T305]  ? ihold+0x20/0x60
[   33.728777][  T305]  print_report+0x3d/0x60
[   33.733103][  T305]  kasan_report+0x122/0x150
[   33.737610][  T305]  ? ihold+0x20/0x60
[   33.741508][  T305]  kasan_check_range+0x249/0x2a0
[   33.746452][  T305]  __kasan_check_write+0x14/0x20
[   33.751436][  T305]  ihold+0x20/0x60
[   33.755180][  T305]  vfs_rmdir+0x24c/0x4f0
[   33.759444][  T305]  incfs_kill_sb+0xfe/0x210
[   33.763959][  T305]  deactivate_locked_super+0xb5/0x120
[   33.769331][  T305]  deactivate_super+0xaf/0xe0
[   33.774007][  T305]  cleanup_mnt+0x45e/0x4e0
[   33.778420][  T305]  __cleanup_mnt+0x19/0x20
[   33.782829][  T305]  task_work_run+0x1e1/0x250
[   33.787412][  T305]  ? __cfi_task_work_run+0x10/0x10
[   33.792519][  T305]  ? path_umount+0x345/0xf60
[   33.797142][  T305]  ? __kasan_slab_free+0x11/0x20
[   33.802088][  T305]  ptrace_notify+0x23f/0x270
[   33.806704][  T305]  ? __cfi_path_umount+0x10/0x10
[   33.811644][  T305]  ? __cfi_ptrace_notify+0x10/0x10
[   33.816759][  T305]  ? user_path_at_empty+0x162/0x1c0
[   33.821957][  T305]  ? __x64_sys_umount+0x12d/0x170
[   33.826984][  T305]  ? __cfi___x64_sys_umount+0x10/0x10
[   33.832362][  T305]  ? fpregs_restore_userregs+0x128/0x260
[   33.837989][  T305]  syscall_exit_work+0x84/0x140
[   33.843007][  T305]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   33.849281][  T305]  syscall_exit_to_user_mode+0xd/0x30
[   33.854780][  T305]  do_syscall_64+0x58/0xa0
[   33.859240][  T305]  ? clear_bhb_loop+0x30/0x80
[   33.863920][  T305]  ? clear_bhb_loop+0x30/0x80
[   33.868603][  T305]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   33.874520][  T305] RIP: 0033:0x7f78b648c527
[   33.879040][  T305] 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
[   33.898659][  T305] RSP: 002b:00007ffd4b19dfc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   33.907100][  T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f78b648c527
[   33.915082][  T305] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4b19e080
[   33.923175][  T305] RBP: 00007ffd4b19e080 R08: 00007ffd4b19f080 R09: 00000000ffffffff
[   33.931166][  T305] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4b19f0f0
[   33.939173][  T305] R13: 000055558a1ab720 R14: 00007ffd4b19f0f0 R15: 0000000000000001
[   33.947164][  T305]  </TASK>
[   33.950200][  T305] ==================================================================
[   33.958367][  T305] Disabling lock debugging due to kernel taint
[   33.964722][  T305] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   33.972543][  T305] #PF: supervisor write access in kernel mode
[   33.978615][  T305] #PF: error_code(0x0002) - not-present page
[   33.984603][  T305] PGD 0 P4D 0 
[   33.987990][  T305] Oops: 0002 [#1] PREEMPT SMP KASAN
[   33.993195][  T305] CPU: 0 PID: 305 Comm: syz-executor272 Tainted: G    B   W          syzkaller #0
[   34.002407][  T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   34.012473][  T305] RIP: 0010:ihold+0x26/0x60
[   34.017009][  T305] 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
[   34.036622][  T305] RSP: 0018:ffffc90000e27ba0 EFLAGS: 00010246
[   34.042719][  T305] RAX: ffff88810fc4bc00 RBX: 0000000000000000 RCX: ffff88810fc4bcc0
[   34.050696][  T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   34.058672][  T305] RBP: ffffc90000e27bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[   34.066651][  T305] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88811000081c
[   34.074717][  T305] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   34.082701][  T305] FS:  000055558a1aa3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   34.091640][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.098230][  T305] CR2: 0000000000000170 CR3: 0000000122d41000 CR4: 00000000003506b0
[   34.106217][  T305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.114199][  T305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.122187][  T305] Call Trace:
[   34.125492][  T305]  <TASK>
[   34.128443][  T305]  vfs_rmdir+0x24c/0x4f0
[   34.132707][  T305]  incfs_kill_sb+0xfe/0x210
[   34.137225][  T305]  deactivate_locked_super+0xb5/0x120
[   34.142617][  T305]  deactivate_super+0xaf/0xe0
[   34.147308][  T305]  cleanup_mnt+0x45e/0x4e0
[   34.151737][  T305]  __cleanup_mnt+0x19/0x20
[   34.156161][  T305]  task_work_run+0x1e1/0x250
[   34.160768][  T305]  ? __cfi_task_work_run+0x10/0x10
[   34.165896][  T305]  ? path_umount+0x345/0xf60
[   34.170501][  T305]  ? __kasan_slab_free+0x11/0x20
[   34.175485][  T305]  ptrace_notify+0x23f/0x270
[   34.180191][  T305]  ? __cfi_path_umount+0x10/0x10
[   34.185152][  T305]  ? __cfi_ptrace_notify+0x10/0x10
[   34.190281][  T305]  ? user_path_at_empty+0x162/0x1c0
[   34.195516][  T305]  ? __x64_sys_umount+0x12d/0x170
[   34.200570][  T305]  ? __cfi___x64_sys_umount+0x10/0x10
[   34.205957][  T305]  ? fpregs_restore_userregs+0x128/0x260
[   34.211605][  T305]  syscall_exit_work+0x84/0x140
[   34.216477][  T305]  syscall_exit_to_user_mode_prepare+0x1c/0x20
[   34.222651][  T305]  syscall_exit_to_user_mode+0xd/0x30
[   34.228032][  T305]  do_syscall_64+0x58/0xa0
[   34.232488][  T305]  ? clear_bhb_loop+0x30/0x80
[   34.237180][  T305]  ? clear_bhb_loop+0x30/0x80
[   34.241870][  T305]  entry_SYSCALL_64_after_hwframe+0x68/0xd2
[   34.247795][  T305] RIP: 0033:0x7f78b648c527
[   34.252224][  T305] 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
[   34.271840][  T305] RSP: 002b:00007ffd4b19dfc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   34.280268][  T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f78b648c527
[   34.288254][  T305] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4b19e080
[   34.296235][  T305] RBP: 00007ffd4b19e080 R08: 00007ffd4b19f080 R09: 00000000ffffffff
[   34.304218][  T305] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4b19f0f0
[   34.312198][  T305] R13: 000055558a1ab720 R14: 00007ffd4b19f0f0 R15: 0000000000000001
[   34.320179][  T305]  </TASK>
[   34.323216][  T305] Modules linked in:
[   34.327131][  T305] CR2: 0000000000000170
[   34.331322][  T305] ---[ end trace 0000000000000000 ]---
[   34.336795][  T305] RIP: 0010:ihold+0x26/0x60
[   34.341312][  T305] 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
[   34.360936][  T305] RSP: 0018:ffffc90000e27ba0 EFLAGS: 00010246
[   34.367015][  T305] RAX: ffff88810fc4bc00 RBX: 0000000000000000 RCX: ffff88810fc4bcc0
[   34.375011][  T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   34.383025][  T305] RBP: ffffc90000e27bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc
[   34.391099][  T305] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88811000081c
[   34.399097][  T305] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000
[   34.407088][  T305] FS:  000055558a1aa3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
[   34.416118][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.422708][  T305] CR2: 0000000000000170 CR3: 0000000122d41000 CR4: 00000000003506b0
[   34.430689][  T305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.438675][  T305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.446658][  T305] Kernel panic - not syncing: Fatal exception
[   34.453297][  T305] Kernel Offset: disabled
[   34.457663][  T305] Rebooting in 86400 seconds..