./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor276984874

<...>
Warning: Permanently added '10.128.1.209' (ED25519) to the list of known hosts.
execve("./syz-executor276984874", ["./syz-executor276984874"], 0x7ffc3bb05710 /* 10 vars */) = 0
brk(NULL)                               = 0x555556bec000
brk(0x555556becd00)                     = 0x555556becd00
arch_prctl(ARCH_SET_FS, 0x555556bec380) = 0
set_tid_address(0x555556bec650)         = 288
set_robust_list(0x555556bec660, 24)     = 0
rseq(0x555556becca0, 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-executor276984874", 4096) = 27
getrandom("\x9a\x2f\xa2\x8b\xac\x8a\x8c\xbb", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555556becd00
brk(0x555556c0dd00)                     = 0x555556c0dd00
brk(0x555556c0e000)                     = 0x555556c0e000
mprotect(0x7f2d36683000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
mkdir("./syzkaller.zoWTcv", 0700)       = 0
chmod("./syzkaller.zoWTcv", 0777)       = 0
chdir("./syzkaller.zoWTcv")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556bec650) = 289
./strace-static-x86_64: Process 289 attached
[pid   289] set_robust_list(0x555556bec660, 24) = 0
[pid   289] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   289] setsid()                    = 1
[pid   289] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   289] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   289] unshare(CLONE_NEWNS)        = 0
[pid   289] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   289] unshare(CLONE_NEWCGROUP)    = 0
[pid   289] unshare(CLONE_NEWUTS)       = 0
[pid   289] unshare(CLONE_SYSVSEM)      = 0
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   289] getpid()                    = 1
[pid   289] 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   289] 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   289] unshare(CLONE_NEWNET)       = 0
[pid   289] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   289] write(3, "0 65535", 7)      = 7
[pid   289] close(3)                    = 0
[pid   289] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   289] write(3, "100000", 6)       = 6
[pid   289] close(3)                    = 0
[pid   289] mkdir("./syz-tmp", 0777)    = 0
[pid   289] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   289] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   289] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   289] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   289] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   289] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   289] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   289] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   289] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   289] chdir("/")                  = 0
[   22.634274][   T24] audit: type=1400 audit(1721000494.029:66): avc:  denied  { execmem } for  pid=288 comm="syz-executor276" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.653541][   T24] audit: type=1400 audit(1721000494.049:67): avc:  denied  { mounton } for  pid=289 comm="syz-executor276" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1
[pid   289] umount2("./pivot", MNT_DETACH) = 0
[pid   289] chroot("./newroot")         = 0
[pid   289] chdir("/")                  = 0
[pid   289] mkdir("/dev/binderfs", 0777) = 0
[pid   289] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   289] mkdir("./0", 0777)          = 0
[pid   289] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556bec650) = 2
./strace-static-x86_64: Process 290 attached
[pid   290] set_robust_list(0x555556bec660, 24) = 0
[pid   290] chdir("./0")                = 0
[pid   290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   290] setpgid(0, 0)               = 0
[pid   290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   290] write(3, "1000", 4)         = 4
[pid   290] close(3)                    = 0
[pid   290] symlink("/dev/binderfs", "./binderfs") = 0
[pid   290] write(1, "executing program\n", 18executing program
) = 18
[pid   290] mkdir("./file0", 000)       = 0
[pid   290] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   290] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0
[pid   290] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   290] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(27)                   = -1 EBADF (Bad file descriptor)
[   22.677554][   T24] audit: type=1400 audit(1721000494.049:68): avc:  denied  { mount } for  pid=289 comm="syz-executor276" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1
[   22.699767][   T24] audit: type=1400 audit(1721000494.049:69): avc:  denied  { mounton } for  pid=289 comm="syz-executor276" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[   22.709921][  T290] incfs: ino conflict with backing FS 8
[pid   290] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   290] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   290] exit_group(0)               = ?
[pid   290] +++ exited with 0 +++
[pid   289] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
[pid   289] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   289] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   289] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   289] getdents64(3, 0x555556bed6f0 /* 6 entries */, 32768) = 176
[pid   289] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   289] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   289] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   289] getdents64(4, 0x555556bf5730 /* 2 entries */, 32768) = 48
[pid   289] getdents64(4, 0x555556bf5730 /* 0 entries */, 32768) = 0
[pid   289] close(4)                    = 0
[pid   289] rmdir("./0/.incomplete")    = 0
[pid   289] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   289] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   289] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   289] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   289] getdents64(4, 0x555556bf5730 /* 2 entries */, 32768) = 48
[pid   289] getdents64(4, 0x555556bf5730 /* 0 entries */, 32768) = 0
[pid   289] close(4)                    = 0
[pid   289] rmdir("./0/.index")         = 0
[   22.721091][   T24] audit: type=1400 audit(1721000494.069:70): avc:  denied  { mounton } for  pid=289 comm="syz-executor276" path="/root/syzkaller.zoWTcv/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   22.750483][   T24] audit: type=1400 audit(1721000494.069:71): avc:  denied  { mount } for  pid=289 comm="syz-executor276" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   22.750614][  T289] ------------[ cut here ]------------
[   22.772349][   T24] audit: type=1400 audit(1721000494.079:72): avc:  denied  { mounton } for  pid=289 comm="syz-executor276" path="/root/syzkaller.zoWTcv/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
[   22.777880][  T289] WARNING: CPU: 0 PID: 289 at fs/inode.c:304 drop_nlink+0xc1/0x110
[   22.802713][   T24] audit: type=1400 audit(1721000494.079:73): avc:  denied  { mount } for  pid=289 comm="syz-executor276" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   22.802727][   T24] audit: type=1400 audit(1721000494.079:74): avc:  denied  { unmount } for  pid=289 comm="syz-executor276" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   22.802740][   T24] audit: type=1400 audit(1721000494.109:75): avc:  denied  { mounton } for  pid=289 comm="syz-executor276" path="/dev/binderfs" dev="devtmpfs" ino=357 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   22.874256][  T289] Modules linked in:
[   22.877969][  T289] CPU: 1 PID: 289 Comm: syz-executor276 Not tainted 5.10.218-syzkaller-00638-g3feee789f446 #0
[   22.888017][  T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   22.897948][  T289] RIP: 0010:drop_nlink+0xc1/0x110
[   22.902756][  T289] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 77 ce f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 af 38 b3 ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   22.922352][  T289] RSP: 0018:ffffc90000b27be8 EFLAGS: 00010293
[   22.928261][  T289] RAX: ffffffff81b771d1 RBX: 0000000000000000 RCX: ffff88811ebb3b40
[   22.936047][  T289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   22.943842][  T289] RBP: ffffc90000b27c10 R08: ffffffff81b77154 R09: 0000000000000003
[   22.951679][  T289] R10: fffff52000164f6c R11: dffffc0000000001 R12: dffffc0000000000
[   22.959483][  T289] R13: 1ffff11023dc6e6d R14: ffff88811ee37320 R15: ffff88811ee37368
[   22.967375][  T289] FS:  0000555556bec380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   22.976069][  T289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.982470][  T289] CR2: 000000000149a248 CR3: 000000011e8dc000 CR4: 00000000003506a0
[   22.990308][  T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.998125][  T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.005932][  T289] Call Trace:
[   23.009036][  T289]  ? show_regs+0x58/0x60
[   23.013107][  T289]  ? __warn+0x160/0x2f0
[   23.017139][  T289]  ? drop_nlink+0xc1/0x110
[   23.021354][  T289]  ? report_bug+0x3d9/0x5b0
[   23.025718][  T289]  ? drop_nlink+0xc1/0x110
[   23.029947][  T289]  ? handle_bug+0x41/0x70
[   23.034109][  T289]  ? exc_invalid_op+0x1b/0x50
[   23.038650][  T289]  ? asm_exc_invalid_op+0x12/0x20
[   23.043514][  T289]  ? drop_nlink+0x44/0x110
[   23.047765][  T289]  ? drop_nlink+0xc1/0x110
[   23.051990][  T289]  ? drop_nlink+0xc1/0x110
[   23.056265][  T289]  ? drop_nlink+0xc1/0x110
[   23.060499][  T289]  shmem_rmdir+0x59/0x90
[   23.064574][  T289]  vfs_rmdir+0x2b7/0x3f0
[   23.068681][  T289]  incfs_kill_sb+0x108/0x220
[   23.073081][  T289]  deactivate_locked_super+0xad/0x110
[   23.078319][  T289]  deactivate_super+0xbe/0xf0
[   23.082810][  T289]  cleanup_mnt+0x45c/0x510
[   23.087083][  T289]  __cleanup_mnt+0x19/0x20
[   23.091349][  T289]  task_work_run+0x129/0x190
[   23.095758][  T289]  ptrace_notify+0x29e/0x350
[   23.100255][  T289]  ? do_notify_parent+0xa10/0xa10
[   23.105112][  T289]  ? user_path_at_empty+0x40/0x50
[   23.110007][  T289]  ? __x64_sys_umount+0x122/0x170
[   23.114838][  T289]  ? path_umount+0xea0/0xea0
[   23.119298][  T289]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.124642][  T289]  do_syscall_64+0x40/0x70
[   23.128930][  T289]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.134632][  T289] RIP: 0033:0x7f2d366109a7
[   23.138918][  T289] 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
[   23.158341][  T289] RSP: 002b:00007ffd4a00b458 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.166581][  T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2d366109a7
[   23.174376][  T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4a00b510
[   23.182214][  T289] RBP: 00007ffd4a00b510 R08: 0000000000000000 R09: 0000000000000000
[   23.190280][  T289] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd4a00c580
[   23.198099][  T289] R13: 0000555556bed6c0 R14: 00007ffd4a00c580 R15: 0000000000000001
[   23.205880][  T289] ---[ end trace 5b469c65ea99ec47 ]---
[   23.211186][  T289] ==================================================================
[   23.219058][  T289] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   23.225127][  T289] Write of size 4 at addr 0000000000000170 by task syz-executor276/289
[   23.233193][  T289] 
[   23.235370][  T289] CPU: 1 PID: 289 Comm: syz-executor276 Tainted: G        W         5.10.218-syzkaller-00638-g3feee789f446 #0
[   23.246824][  T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   23.256715][  T289] Call Trace:
[   23.259850][  T289]  dump_stack_lvl+0x1e2/0x24b
[   23.264363][  T289]  ? panic+0x812/0x812
[   23.268263][  T289]  ? bfq_pos_tree_add_move+0x43b/0x43b
[   23.273560][  T289]  ? _raw_spin_lock+0xa4/0x1b0
[   23.278158][  T289]  ? _raw_spin_trylock_bh+0x190/0x190
[   23.283369][  T289]  kasan_report+0x167/0x1c0
[   23.287707][  T289]  ? ihold+0x20/0x60
[   23.291438][  T289]  ? ihold+0x20/0x60
[   23.295170][  T289]  kasan_check_range+0x293/0x2a0
[   23.299946][  T289]  __kasan_check_write+0x14/0x20
[   23.304719][  T289]  ihold+0x20/0x60
[   23.308278][  T289]  vfs_rmdir+0x200/0x3f0
[   23.312357][  T289]  incfs_kill_sb+0x108/0x220
[   23.316786][  T289]  deactivate_locked_super+0xad/0x110
[   23.321992][  T289]  deactivate_super+0xbe/0xf0
[   23.326508][  T289]  cleanup_mnt+0x45c/0x510
[   23.330758][  T289]  __cleanup_mnt+0x19/0x20
[   23.335011][  T289]  task_work_run+0x129/0x190
[   23.339438][  T289]  ptrace_notify+0x29e/0x350
[   23.343864][  T289]  ? do_notify_parent+0xa10/0xa10
[   23.348724][  T289]  ? user_path_at_empty+0x40/0x50
[   23.353584][  T289]  ? __x64_sys_umount+0x122/0x170
[   23.358444][  T289]  ? path_umount+0xea0/0xea0
[   23.362873][  T289]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.368252][  T289]  do_syscall_64+0x40/0x70
[   23.372505][  T289]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.378232][  T289] RIP: 0033:0x7f2d366109a7
[   23.382489][  T289] 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
[   23.401928][  T289] RSP: 002b:00007ffd4a00b458 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.410170][  T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2d366109a7
[   23.418069][  T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4a00b510
[   23.425880][  T289] RBP: 00007ffd4a00b510 R08: 0000000000000000 R09: 0000000000000000
[   23.433692][  T289] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd4a00c580
[   23.441503][  T289] R13: 0000555556bed6c0 R14: 00007ffd4a00c580 R15: 0000000000000001
[   23.449314][  T289] ==================================================================
[   23.457211][  T289] Disabling lock debugging due to kernel taint
[   23.463292][  T289] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   23.470845][  T289] #PF: supervisor write access in kernel mode
[   23.476741][  T289] #PF: error_code(0x0002) - not-present page
[   23.482557][  T289] PGD 0 P4D 0 
[   23.485769][  T289] Oops: 0002 [#1] PREEMPT SMP KASAN
[   23.490897][  T289] CPU: 1 PID: 289 Comm: syz-executor276 Tainted: G    B   W         5.10.218-syzkaller-00638-g3feee789f446 #0
[   23.502346][  T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   23.512250][  T289] RIP: 0010:ihold+0x25/0x60
[   23.516589][  T289] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 c1 30 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 60 c6 f0 ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 44 34 b3
[   23.536026][  T289] RSP: 0018:ffffc90000b27c28 EFLAGS: 00010246
[   23.541926][  T289] RAX: ffff88811ebb3b00 RBX: 0000000000000001 RCX: ffff88811ebb3b40
[   23.549738][  T289] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   23.557551][  T289] RBP: ffffc90000b27c38 R08: ffffffff813e2c3b R09: 0000000000000003
[   23.565362][  T289] R10: fffffbfff0e10648 R11: dffffc0000000001 R12: dffffc0000000000
[   23.573262][  T289] R13: ffff88811c91e220 R14: 0000000000000000 R15: 0000000000000000
[   23.581072][  T289] FS:  0000555556bec380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   23.589839][  T289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.596260][  T289] CR2: 0000000000000170 CR3: 000000011e8dc000 CR4: 00000000003506a0
[   23.604072][  T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.611884][  T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.619690][  T289] Call Trace:
[   23.622830][  T289]  ? __die_body+0x62/0xb0
[   23.626989][  T289]  ? __die+0x7e/0x90
[   23.630720][  T289]  ? no_context+0xbc8/0xf20
[   23.635057][  T289]  ? sched_clock+0x3a/0x40
[   23.639311][  T289]  ? is_prefetch+0x5c0/0x5c0
[   23.643741][  T289]  ? __irq_exit_rcu+0x40/0x150
[   23.648353][  T289]  ? irq_exit_rcu+0x9/0x10
[   23.652593][  T289]  ? sysvec_apic_timer_interrupt+0xcb/0xe0
[   23.658235][  T289]  ? __bad_area_nosemaphore+0xcd/0x440
[   23.663528][  T289]  ? bad_area_nosemaphore+0x2d/0x40
[   23.668561][  T289]  ? exc_page_fault+0x3ea/0x5b0
[   23.673260][  T289]  ? asm_exc_page_fault+0x1e/0x30
[   23.678109][  T289]  ? check_panic_on_warn+0x5b/0xb0
[   23.683163][  T289]  ? ihold+0x25/0x60
[   23.686881][  T289]  ? ihold+0x20/0x60
[   23.690613][  T289]  vfs_rmdir+0x200/0x3f0
[   23.694692][  T289]  incfs_kill_sb+0x108/0x220
[   23.699122][  T289]  deactivate_locked_super+0xad/0x110
[   23.704327][  T289]  deactivate_super+0xbe/0xf0
[   23.708843][  T289]  cleanup_mnt+0x45c/0x510
[   23.713093][  T289]  __cleanup_mnt+0x19/0x20
[   23.717348][  T289]  task_work_run+0x129/0x190
[   23.721772][  T289]  ptrace_notify+0x29e/0x350
[   23.726199][  T289]  ? do_notify_parent+0xa10/0xa10
[   23.731058][  T289]  ? user_path_at_empty+0x40/0x50
[   23.735922][  T289]  ? __x64_sys_umount+0x122/0x170
[   23.740779][  T289]  ? path_umount+0xea0/0xea0
[   23.745208][  T289]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.750587][  T289]  do_syscall_64+0x40/0x70
[   23.754843][  T289]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.760568][  T289] RIP: 0033:0x7f2d366109a7
[   23.764823][  T289] 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
[   23.784262][  T289] RSP: 002b:00007ffd4a00b458 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.792507][  T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2d366109a7
[   23.800317][  T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4a00b510
[   23.808130][  T289] RBP: 00007ffd4a00b510 R08: 0000000000000000 R09: 0000000000000000
[   23.815940][  T289] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd4a00c580
[   23.823753][  T289] R13: 0000555556bed6c0 R14: 00007ffd4a00c580 R15: 0000000000000001
[   23.831563][  T289] Modules linked in:
[   23.835306][  T289] CR2: 0000000000000170
[   23.839299][  T289] ---[ end trace 5b469c65ea99ec48 ]---
[   23.844589][  T289] RIP: 0010:ihold+0x25/0x60
[   23.848924][  T289] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 c1 30 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 60 c6 f0 ff bb 01 00 00 00 <f0> 41 0f c1 9e 70 01 00 00 ff c3 bf 02 00 00 00 89 de e8 44 34 b3
[   23.868365][  T289] RSP: 0018:ffffc90000b27c28 EFLAGS: 00010246
[   23.874267][  T289] RAX: ffff88811ebb3b00 RBX: 0000000000000001 RCX: ffff88811ebb3b40
[   23.882080][  T289] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   23.889890][  T289] RBP: ffffc90000b27c38 R08: ffffffff813e2c3b R09: 0000000000000003
[   23.897701][  T289] R10: fffffbfff0e10648 R11: dffffc0000000001 R12: dffffc0000000000
[   23.905513][  T289] R13: ffff88811c91e220 R14: 0000000000000000 R15: 0000000000000000
[   23.913326][  T289] FS:  0000555556bec380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   23.922093][  T289] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.928513][  T289] CR2: 0000000000000170 CR3: 000000011e8dc000 CR4: 00000000003506a0
[   23.936327][  T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.944138][  T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.951950][  T289] Kernel panic - not syncing: Fatal exception
[   23.957912][  T289] Kernel Offset: disabled
[   23.962019][  T289] Rebooting in 86400 seconds..