./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1550016553 <...> Warning: Permanently added '10.128.0.57' (ED25519) to the list of known hosts. execve("./syz-executor1550016553", ["./syz-executor1550016553"], 0x7ffe8e144690 /* 10 vars */) = 0 brk(NULL) = 0x55557ba74000 brk(0x55557ba74d00) = 0x55557ba74d00 arch_prctl(ARCH_SET_FS, 0x55557ba74380) = 0 set_tid_address(0x55557ba74650) = 357 set_robust_list(0x55557ba74660, 24) = 0 rseq(0x55557ba74ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1550016553", 4096) = 28 getrandom("\xab\x1a\xbe\xb5\x86\xa6\x48\x53", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557ba74d00 brk(0x55557ba95d00) = 0x55557ba95d00 brk(0x55557ba96000) = 0x55557ba96000 mprotect(0x7f48dabd6000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 mkdir("./syzkaller.etpehI", 0700) = 0 chmod("./syzkaller.etpehI", 0777) = 0 chdir("./syzkaller.etpehI") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557ba74650) = 359 ./strace-static-x86_64: Process 359 attached [pid 359] set_robust_list(0x55557ba74660, 24) = 0 [pid 359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 359] getppid() = 0 [pid 359] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 359] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 359] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 359] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 359] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 359] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 359] unshare(CLONE_NEWNS) = 0 [pid 359] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 359] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 359] unshare(CLONE_NEWCGROUP) = 0 [pid 359] unshare(CLONE_NEWUTS) = 0 [pid 359] unshare(CLONE_SYSVSEM) = 0 [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [ 24.038116][ T23] audit: type=1400 audit(1739519602.830:66): avc: denied { execmem } for pid=357 comm="syz-executor155" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 359] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 359] getpid() = 1 [pid 359] 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, 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, inheritable=0}) = 0 [pid 359] 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, 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, inheritable=0}) = 0 [pid 359] unshare(CLONE_NEWNET) = 0 [pid 359] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3 [pid 359] write(3, "0 65535", 7) = 7 [pid 359] close(3) = 0 [pid 359] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 359] write(3, "100000", 6) = 6 [pid 359] close(3) = 0 [pid 359] mkdir("./syz-tmp", 0777) = 0 [ 24.067559][ T23] audit: type=1400 audit(1739519602.860:67): avc: denied { mounton } for pid=359 comm="syz-executor155" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [pid 359] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0 [pid 359] mkdir("./syz-tmp/newroot", 0777) = 0 [pid 359] mkdir("./syz-tmp/newroot/dev", 0700) = 0 [pid 359] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0 [pid 359] mkdir("./syz-tmp/newroot/proc", 0700) = 0 [pid 359] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0 [pid 359] mkdir("./syz-tmp/newroot/selinux", 0700) = 0 [pid 359] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory) [pid 359] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0 [pid 359] mkdir("./syz-tmp/newroot/sys", 0700) = 0 [pid 359] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0 [pid 359] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0 [ 24.110481][ T23] audit: type=1400 audit(1739519602.900:68): avc: denied { mounton } for pid=359 comm="syz-executor155" path="/root/syzkaller.etpehI/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.134966][ T23] audit: type=1400 audit(1739519602.900:69): avc: denied { mount } for pid=359 comm="syz-executor155" name="/" dev="tmpfs" ino=12328 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1 [pid 359] 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 359] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0 [pid 359] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0 [pid 359] 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 359] mkdir("./syz-tmp/pivot", 0777) = 0 [pid 359] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0 [pid 359] chdir("/") = 0 [pid 359] umount2("./pivot", MNT_DETACH) = 0 [pid 359] chroot("./newroot") = 0 [pid 359] chdir("/") = 0 [pid 359] mkdir("/dev/gadgetfs", 0777) = 0 [ 24.157813][ T23] audit: type=1400 audit(1739519602.950:70): avc: denied { mounton } for pid=359 comm="syz-executor155" path="/root/syzkaller.etpehI/syz-tmp/newroot/dev" dev="tmpfs" ino=12330 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1 [ 24.183494][ T23] audit: type=1400 audit(1739519602.950:71): avc: denied { mount } for pid=359 comm="syz-executor155" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1 [pid 359] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device) [pid 359] mkdir("/dev/binderfs", 0777) = 0 [pid 359] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0 [pid 359] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 359] mkdir("./0", 0777) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557ba74650) = 2 ./strace-static-x86_64: Process 360 attached [pid 360] set_robust_list(0x55557ba74660, 24) = 0 [pid 360] chdir("./0") = 0 [pid 360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 360] setpgid(0, 0) = 0 [pid 360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 360] write(3, "1000", 4) = 4 [pid 360] close(3) = 0 [pid 360] symlink("/dev/binderfs", "./binderfs") = 0 [pid 360] write(1, "executing program\n", 18executing program ) = 18 [pid 360] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 360] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0 [pid 360] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 360] close(3) = -1 EBADF (Bad file descriptor) [pid 360] close(4) = -1 EBADF (Bad file descriptor) [pid 360] close(5) = -1 EBADF (Bad file descriptor) [pid 360] close(6) = -1 EBADF (Bad file descriptor) [pid 360] close(7) = -1 EBADF (Bad file descriptor) [pid 360] close(8) = -1 EBADF (Bad file descriptor) [pid 360] close(9) = -1 EBADF (Bad file descriptor) [pid 360] close(10) = -1 EBADF (Bad file descriptor) [pid 360] close(11) = -1 EBADF (Bad file descriptor) [pid 360] close(12) = -1 EBADF (Bad file descriptor) [pid 360] close(13) = -1 EBADF (Bad file descriptor) [pid 360] close(14) = -1 EBADF (Bad file descriptor) [pid 360] close(15) = -1 EBADF (Bad file descriptor) [pid 360] close(16) = -1 EBADF (Bad file descriptor) [pid 360] close(17) = -1 EBADF (Bad file descriptor) [pid 360] close(18) = -1 EBADF (Bad file descriptor) [pid 360] close(19) = -1 EBADF (Bad file descriptor) [pid 360] close(20) = -1 EBADF (Bad file descriptor) [pid 360] close(21) = -1 EBADF (Bad file descriptor) [pid 360] close(22) = -1 EBADF (Bad file descriptor) [pid 360] close(23) = -1 EBADF (Bad file descriptor) [pid 360] close(24) = -1 EBADF (Bad file descriptor) [pid 360] close(25) = -1 EBADF (Bad file descriptor) [pid 360] close(26) = -1 EBADF (Bad file descriptor) [pid 360] close(27) = -1 EBADF (Bad file descriptor) [pid 360] close(28) = -1 EBADF (Bad file descriptor) [pid 360] close(29) = -1 EBADF (Bad file descriptor) [pid 360] exit_group(0) = ? [pid 360] +++ exited with 0 +++ [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 24.186569][ T359] request_module fs-gadgetfs succeeded, but still no fs? [ 24.206232][ T23] audit: type=1400 audit(1739519602.950:72): avc: denied { mounton } for pid=359 comm="syz-executor155" path="/root/syzkaller.etpehI/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 [pid 359] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 359] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 359] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 359] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0 [pid 359] getdents64(3, 0x55557ba756f0 /* 6 entries */, 32768) = 176 [pid 359] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 359] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 359] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 359] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 359] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0 [pid 359] getdents64(4, 0x55557ba7d730 /* 2 entries */, 32768) = 48 [pid 359] getdents64(4, 0x55557ba7d730 /* 0 entries */, 32768) = 0 [pid 359] close(4) = 0 [pid 359] rmdir("./0/.incomplete") = 0 [pid 359] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 359] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 359] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 359] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 [pid 359] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0 [pid 359] getdents64(4, 0x55557ba7d730 /* 2 entries */, 32768) = 48 [pid 359] getdents64(4, 0x55557ba7d730 /* 0 entries */, 32768) = 0 [pid 359] close(4) = 0 [pid 359] rmdir("./0/.index") = 0 [ 24.239604][ T23] audit: type=1400 audit(1739519602.950:73): avc: denied { mounton } for pid=359 comm="syz-executor155" path="/root/syzkaller.etpehI/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=12335 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1 [ 24.267240][ T23] audit: type=1400 audit(1739519602.950:74): avc: denied { unmount } for pid=359 comm="syz-executor155" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 24.286780][ T23] audit: type=1400 audit(1739519602.980:75): avc: denied { mounton } for pid=359 comm="syz-executor155" path="/dev/gadgetfs" dev="devtmpfs" ino=12338 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1 [ 24.287103][ T359] ------------[ cut here ]------------ [ 24.315159][ T359] WARNING: CPU: 0 PID: 359 at fs/inode.c:302 drop_nlink+0xbb/0x100 [ 24.323101][ T359] Modules linked in: [ 24.326918][ T359] CPU: 0 PID: 359 Comm: syz-executor155 Not tainted 5.4.289-syzkaller-00011-g39762b7a60e9 #0 [ 24.336988][ T359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 24.346881][ T359] RIP: 0010:drop_nlink+0xbb/0x100 [ 24.351731][ T359] Code: 49 8b 1e 48 8d bb d0 04 00 00 be 08 00 00 00 e8 9b 99 f2 ff f0 48 ff 83 d0 04 00 00 5b 41 5c 41 5e 41 5f 5d c3 e8 e5 db c2 ff <0f> 0b eb 89 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c [ 24.371521][ T359] RSP: 0018:ffff8881ef3c7b68 EFLAGS: 00010293 [ 24.377521][ T359] RAX: ffffffff81a16e8b RBX: 1ffff1103dc92e27 RCX: ffff8881f37dee40 [ 24.385411][ T359] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.393333][ T359] RBP: 0000000000000000 R08: ffffffff81a16e0f R09: 0000000000000003 [ 24.401139][ T359] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881ee497138 [ 24.409242][ T359] R13: dffffc0000000000 R14: ffff8881ee4970f0 R15: dffffc0000000000 [ 24.417052][ T359] FS: 000055557ba74380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 24.425995][ T359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.432413][ T359] CR2: 000055f4c9efb148 CR3: 00000001ef22f000 CR4: 00000000003406b0 [ 24.440232][ T359] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.448383][ T359] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.456281][ T359] Call Trace: [ 24.459451][ T359] ? __warn+0x162/0x250 [ 24.463513][ T359] ? report_bug+0x3a1/0x4e0 [ 24.467856][ T359] ? drop_nlink+0xbb/0x100 [ 24.472104][ T359] ? drop_nlink+0xbb/0x100 [ 24.476364][ T359] ? do_invalid_op+0x6e/0x110 [ 24.481044][ T359] ? invalid_op+0x1e/0x30 [ 24.485208][ T359] ? drop_nlink+0x3f/0x100 [ 24.489463][ T359] ? drop_nlink+0xbb/0x100 [ 24.493715][ T359] ? drop_nlink+0xbb/0x100 [ 24.497967][ T359] ? drop_nlink+0xbb/0x100 [ 24.502337][ T359] shmem_rmdir+0x54/0x80 [ 24.506500][ T359] vfs_rmdir+0x285/0x3c0 [ 24.510583][ T359] incfs_kill_sb+0x105/0x200 [ 24.515300][ T359] deactivate_locked_super+0xa8/0x110 [ 24.520578][ T359] deactivate_super+0x1e2/0x2a0 [ 24.525258][ T359] ? deactivate_locked_super+0x110/0x110 [ 24.530739][ T359] ? fast_dput+0x7a/0x280 [ 24.534899][ T359] cleanup_mnt+0x44e/0x500 [ 24.539144][ T359] task_work_run+0x140/0x170 [ 24.543659][ T359] ptrace_notify+0x29e/0x350 [ 24.548198][ T359] ? do_notify_parent+0xa10/0xa10 [ 24.553035][ T359] ? ksys_umount+0x3a6/0x410 [ 24.557674][ T359] ? namespace_unlock+0x4e0/0x4e0 [ 24.562512][ T359] ? fpu__clear+0x3c0/0x3c0 [ 24.566854][ T359] syscall_slow_exit_work+0x167/0x400 [ 24.572072][ T359] do_syscall_64+0x19d/0x1c0 [ 24.576659][ T359] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 24.582426][ T359] RIP: 0033:0x7f48dab63a87 [ 24.586671][ T359] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 24.606182][ T359] RSP: 002b:00007ffd25240138 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 24.614600][ T359] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f48dab63a87 [ 24.622563][ T359] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd252401f0 [ 24.630345][ T359] RBP: 00007ffd252401f0 R08: 0000000000000000 R09: 0000000000000000 [ 24.638155][ T359] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd25241260 [ 24.645963][ T359] R13: 000055557ba756c0 R14: 00007ffd25241260 R15: 0000000000000001 [ 24.653864][ T359] ---[ end trace 45de4fcfc06f9461 ]--- [ 24.659664][ T359] ================================================================== [ 24.667541][ T359] BUG: KASAN: null-ptr-deref in ihold+0x1b/0x50 [ 24.673847][ T359] Write of size 4 at addr 0000000000000160 by task syz-executor155/359 [ 24.681906][ T359] [ 24.684081][ T359] CPU: 0 PID: 359 Comm: syz-executor155 Tainted: G W 5.4.289-syzkaller-00011-g39762b7a60e9 #0 [ 24.695464][ T359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 24.705513][ T359] Call Trace: [ 24.708648][ T359] dump_stack+0x1d8/0x241 [ 24.712895][ T359] ? panic+0x89d/0x89d [ 24.716800][ T359] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 24.722443][ T359] ? _raw_spin_trylock_bh+0x190/0x190 [ 24.727647][ T359] ? _raw_spin_unlock+0x49/0x60 [ 24.732336][ T359] ? ihold+0x1b/0x50 [ 24.736067][ T359] __kasan_report+0xe9/0x120 [ 24.740519][ T359] ? ihold+0x1b/0x50 [ 24.744262][ T359] kasan_report+0x30/0x60 [ 24.748400][ T359] check_memory_region+0x272/0x280 [ 24.753341][ T359] ihold+0x1b/0x50 [ 24.756901][ T359] vfs_rmdir+0x1e0/0x3c0 [ 24.761145][ T359] incfs_kill_sb+0x105/0x200 [ 24.765561][ T359] deactivate_locked_super+0xa8/0x110 [ 24.770865][ T359] deactivate_super+0x1e2/0x2a0 [ 24.775634][ T359] ? deactivate_locked_super+0x110/0x110 [ 24.781109][ T359] ? fast_dput+0x7a/0x280 [ 24.785274][ T359] cleanup_mnt+0x44e/0x500 [ 24.789517][ T359] task_work_run+0x140/0x170 [ 24.793935][ T359] ptrace_notify+0x29e/0x350 [ 24.798511][ T359] ? do_notify_parent+0xa10/0xa10 [ 24.803409][ T359] ? ksys_umount+0x3a6/0x410 [ 24.808284][ T359] ? namespace_unlock+0x4e0/0x4e0 [ 24.813254][ T359] ? fpu__clear+0x3c0/0x3c0 [ 24.817764][ T359] syscall_slow_exit_work+0x167/0x400 [ 24.822970][ T359] do_syscall_64+0x19d/0x1c0 [ 24.827924][ T359] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 24.833637][ T359] RIP: 0033:0x7f48dab63a87 [ 24.837887][ T359] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 24.857711][ T359] RSP: 002b:00007ffd25240138 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 24.866243][ T359] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f48dab63a87 [ 24.874012][ T359] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd252401f0 [ 24.881824][ T359] RBP: 00007ffd252401f0 R08: 0000000000000000 R09: 0000000000000000 [ 24.890466][ T359] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd25241260 [ 24.898293][ T359] R13: 000055557ba756c0 R14: 00007ffd25241260 R15: 0000000000000001 [ 24.906083][ T359] ================================================================== [ 24.913983][ T359] Disabling lock debugging due to kernel taint [ 24.920347][ T359] BUG: kernel NULL pointer dereference, address: 0000000000000160 [ 24.928052][ T359] #PF: supervisor write access in kernel mode [ 24.933961][ T359] #PF: error_code(0x0002) - not-present page [ 24.939780][ T359] PGD 0 P4D 0 [ 24.942970][ T359] Oops: 0002 [#1] PREEMPT SMP KASAN [ 24.948013][ T359] CPU: 0 PID: 359 Comm: syz-executor155 Tainted: G B W 5.4.289-syzkaller-00011-g39762b7a60e9 #0 [ 24.959567][ T359] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 24.969538][ T359] RIP: 0010:ihold+0x20/0x50 [ 24.973874][ T359] Code: 0f 1f 84 00 00 00 00 00 66 90 55 53 48 89 fb e8 46 d4 c2 ff 48 8d bb 60 01 00 00 be 04 00 00 00 e8 d5 91 f2 ff bd 01 00 00 00 <f0> 0f c1 ab 60 01 00 00 ff c5 bf 02 00 00 00 89 ee e8 0a d7 c2 ff [ 24.993529][ T359] RSP: 0018:ffff8881ef3c7ba0 EFLAGS: 00010246 [ 24.999410][ T359] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881f37dee40 [ 25.007314][ T359] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 25.015135][ T359] RBP: 0000000000000001 R08: ffffffff813ae535 R09: 0000000000000003 [ 25.022930][ T359] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000 [ 25.031100][ T359] R13: dffffc0000000000 R14: ffff8881ee496310 R15: 0000000000000000 [ 25.038914][ T359] FS: 000055557ba74380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 25.047765][ T359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.054538][ T359] CR2: 0000000000000160 CR3: 00000001ef22f000 CR4: 00000000003406b0 [ 25.062467][ T359] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.070432][ T359] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.078292][ T359] Call Trace: [ 25.081372][ T359] ? __die+0xb4/0x100 [ 25.085180][ T359] ? no_context+0xac7/0xd20 [ 25.089713][ T359] ? is_prefetch+0x4b0/0x4b0 [ 25.094121][ T359] ? ihold+0x1b/0x50 [ 25.097941][ T359] ? __do_page_fault+0xa72/0xbb0 [ 25.102800][ T359] ? __bad_area_nosemaphore+0xc0/0x470 [ 25.108112][ T359] ? page_fault+0x2f/0x40 [ 25.112357][ T359] ? check_panic_on_warn+0x55/0xa0 [ 25.117302][ T359] ? ihold+0x20/0x50 [ 25.121114][ T359] vfs_rmdir+0x1e0/0x3c0 [ 25.125199][ T359] incfs_kill_sb+0x105/0x200 [ 25.129620][ T359] deactivate_locked_super+0xa8/0x110 [ 25.134830][ T359] deactivate_super+0x1e2/0x2a0 [ 25.139508][ T359] ? deactivate_locked_super+0x110/0x110 [ 25.145076][ T359] ? fast_dput+0x7a/0x280 [ 25.149255][ T359] cleanup_mnt+0x44e/0x500 [ 25.153490][ T359] task_work_run+0x140/0x170 [ 25.158099][ T359] ptrace_notify+0x29e/0x350 [ 25.162526][ T359] ? do_notify_parent+0xa10/0xa10 [ 25.167495][ T359] ? ksys_umount+0x3a6/0x410 [ 25.171905][ T359] ? namespace_unlock+0x4e0/0x4e0 [ 25.176765][ T359] ? fpu__clear+0x3c0/0x3c0 [ 25.181106][ T359] syscall_slow_exit_work+0x167/0x400 [ 25.186325][ T359] do_syscall_64+0x19d/0x1c0 [ 25.190825][ T359] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 25.196564][ T359] RIP: 0033:0x7f48dab63a87 [ 25.201072][ T359] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 25.220594][ T359] RSP: 002b:00007ffd25240138 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.228852][ T359] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f48dab63a87 [ 25.236655][ T359] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd252401f0 [ 25.244466][ T359] RBP: 00007ffd252401f0 R08: 0000000000000000 R09: 0000000000000000 [ 25.252537][ T359] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd25241260 [ 25.260351][ T359] R13: 000055557ba756c0 R14: 00007ffd25241260 R15: 0000000000000001 [ 25.268588][ T359] Modules linked in: [ 25.272307][ T359] CR2: 0000000000000160 [ 25.276303][ T359] ---[ end trace 45de4fcfc06f9462 ]--- [ 25.281695][ T359] RIP: 0010:ihold+0x20/0x50 [ 25.286201][ T359] Code: 0f 1f 84 00 00 00 00 00 66 90 55 53 48 89 fb e8 46 d4 c2 ff 48 8d bb 60 01 00 00 be 04 00 00 00 e8 d5 91 f2 ff bd 01 00 00 00 <f0> 0f c1 ab 60 01 00 00 ff c5 bf 02 00 00 00 89 ee e8 0a d7 c2 ff [ 25.305727][ T359] RSP: 0018:ffff8881ef3c7ba0 EFLAGS: 00010246 [ 25.311749][ T359] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881f37dee40 [ 25.319796][ T359] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 25.327774][ T359] RBP: 0000000000000001 R08: ffffffff813ae535 R09: 0000000000000003 [ 25.335670][ T359] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000 [ 25.343569][ T359] R13: dffffc0000000000 R14: ffff8881ee496310 R15: 0000000000000000 [ 25.351484][ T359] FS: 000055557ba74380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 25.360293][ T359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.366870][ T359] CR2: 0000000000000160 CR3: 00000001ef22f000 CR4: 00000000003406b0 [ 25.374685][ T359] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.382499][ T359] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.390483][ T359] Kernel panic - not syncing: Fatal exception [ 25.396733][ T359] Kernel Offset: disabled [ 25.400947][ T359] Rebooting in 86400 seconds..