./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1848054987

<...>
Warning: Permanently added '10.128.1.54' (ED25519) to the list of known hosts.
execve("./syz-executor1848054987", ["./syz-executor1848054987"], 0x7ffe9b6750a0 /* 10 vars */) = 0
brk(NULL)                               = 0x555555aeb000
brk(0x555555aebd00)                     = 0x555555aebd00
arch_prctl(ARCH_SET_FS, 0x555555aeb380) = 0
set_tid_address(0x555555aeb650)         = 289
set_robust_list(0x555555aeb660, 24)     = 0
rseq(0x555555aebca0, 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-executor1848054987", 4096) = 28
getrandom("\xca\xc1\x01\x56\xc2\x48\x51\x7a", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555555aebd00
brk(0x555555b0cd00)                     = 0x555555b0cd00
brk(0x555555b0d000)                     = 0x555555b0d000
mprotect(0x7f040f83a000, 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.34jfzE", 0700)       = 0
chmod("./syzkaller.34jfzE", 0777)       = 0
chdir("./syzkaller.34jfzE")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555aeb650) = 290
./strace-static-x86_64: Process 290 attached
[pid   290] set_robust_list(0x555555aeb660, 24) = 0
[pid   290] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   290] setsid()                    = 1
[pid   290] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   290] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   290] unshare(CLONE_NEWNS)        = 0
[pid   290] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   290] unshare(CLONE_NEWCGROUP)    = 0
[pid   290] unshare(CLONE_NEWUTS)       = 0
[pid   290] unshare(CLONE_SYSVSEM)      = 0
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   290] getpid()                    = 1
[pid   290] 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   290] 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   290] unshare(CLONE_NEWNET)       = 0
[pid   290] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   290] write(3, "0 65535", 7)      = 7
[pid   290] close(3)                    = 0
[pid   290] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   290] write(3, "100000", 6)       = 6
[pid   290] close(3)                    = 0
[pid   290] mkdir("./syz-tmp", 0777)    = 0
[pid   290] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   290] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   290] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   290] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[   24.351183][   T24] audit: type=1400 audit(1721013267.400:66): avc:  denied  { execmem } for  pid=289 comm="syz-executor184" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   24.370599][   T24] audit: type=1400 audit(1721013267.410:67): avc:  denied  { mounton } for  pid=290 comm="syz-executor184" 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   290] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   290] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   290] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   290] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   290] chdir("/")                  = 0
[pid   290] umount2("./pivot", MNT_DETACH) = 0
[pid   290] chroot("./newroot")         = 0
[pid   290] chdir("/")                  = 0
[pid   290] mkdir("/dev/binderfs", 0777) = 0
[pid   290] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   290] mkdir("./0", 0777)          = 0
[pid   290] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555aeb650) = 2
./strace-static-x86_64: Process 291 attached
[pid   291] set_robust_list(0x555555aeb660, 24) = 0
[pid   291] chdir("./0")                = 0
[pid   291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   291] setpgid(0, 0)               = 0
[pid   291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   291] write(3, "1000", 4)         = 4
[pid   291] close(3)                    = 0
[pid   291] symlink("/dev/binderfs", "./binderfs") = 0
[pid   291] write(1, "executing program\n", 18executing program
) = 18
[pid   291] mkdir("./file0", 000)       = 0
[pid   291] mount(".", "./file0/../file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   291] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0
[pid   291] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   291] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(25)                   = -1 EBADF (Bad file descriptor)
[   24.394552][   T24] audit: type=1400 audit(1721013267.410:68): avc:  denied  { mount } for  pid=290 comm="syz-executor184" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1
[   24.416735][   T24] audit: type=1400 audit(1721013267.420:69): avc:  denied  { mounton } for  pid=290 comm="syz-executor184" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[   24.428829][  T291] incfs: ino conflict with backing FS 8
[pid   291] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   291] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   291] exit_group(0)               = ?
[pid   291] +++ exited with 0 +++
[pid   290] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
[pid   290] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   290] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   290] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   290] getdents64(3, 0x555555aec6f0 /* 6 entries */, 32768) = 176
[pid   290] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   290] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   290] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   290] getdents64(4, 0x555555af4730 /* 2 entries */, 32768) = 48
[pid   290] getdents64(4, 0x555555af4730 /* 0 entries */, 32768) = 0
[pid   290] close(4)                    = 0
[pid   290] rmdir("./0/.incomplete")    = 0
[pid   290] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   290] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   290] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   290] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   290] getdents64(4, 0x555555af4730 /* 2 entries */, 32768) = 48
[pid   290] getdents64(4, 0x555555af4730 /* 0 entries */, 32768) = 0
[pid   290] close(4)                    = 0
[pid   290] rmdir("./0/.index")         = 0
[   24.438124][   T24] audit: type=1400 audit(1721013267.440:70): avc:  denied  { mounton } for  pid=290 comm="syz-executor184" path="/root/syzkaller.34jfzE/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   24.467598][   T24] audit: type=1400 audit(1721013267.450:71): avc:  denied  { mount } for  pid=290 comm="syz-executor184" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   24.467848][  T290] ------------[ cut here ]------------
[   24.489528][   T24] audit: type=1400 audit(1721013267.450:72): avc:  denied  { mounton } for  pid=290 comm="syz-executor184" path="/root/syzkaller.34jfzE/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
[   24.495156][  T290] WARNING: CPU: 1 PID: 290 at fs/inode.c:304 drop_nlink+0xc1/0x110
[   24.520009][   T24] audit: type=1400 audit(1721013267.450:73): avc:  denied  { mount } for  pid=290 comm="syz-executor184" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   24.527648][  T290] Modules linked in:
[   24.549587][   T24] audit: type=1400 audit(1721013267.450:74): avc:  denied  { unmount } for  pid=290 comm="syz-executor184" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   24.553200][  T290] CPU: 1 PID: 290 Comm: syz-executor184 Not tainted 5.10.218-syzkaller-00638-g3feee789f446 #0
[   24.572700][   T24] audit: type=1400 audit(1721013267.470:75): avc:  denied  { mounton } for  pid=290 comm="syz-executor184" path="/dev/binderfs" dev="devtmpfs" ino=357 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   24.582831][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   24.615354][  T290] RIP: 0010:drop_nlink+0xc1/0x110
[   24.620147][  T290] 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
[   24.639584][  T290] RSP: 0018:ffffc90000af7be8 EFLAGS: 00010293
[   24.645456][  T290] RAX: ffffffff81b771d1 RBX: 0000000000000000 RCX: ffff88811f0513c0
[   24.653295][  T290] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   24.661136][  T290] RBP: ffffc90000af7c10 R08: ffffffff81b77154 R09: 0000000000000003
[   24.668925][  T290] R10: fffff5200015ef6c R11: dffffc0000000001 R12: dffffc0000000000
[   24.676709][  T290] R13: 1ffff1102307ac29 R14: ffff8881183d6100 R15: ffff8881183d6148
[   24.684584][  T290] FS:  0000555555aeb380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   24.693306][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.699747][  T290] CR2: 0000000001224258 CR3: 000000011ebd9000 CR4: 00000000003506b0
[   24.707521][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.715465][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.723238][  T290] Call Trace:
[   24.726357][  T290]  ? show_regs+0x58/0x60
[   24.730463][  T290]  ? __warn+0x160/0x2f0
[   24.734439][  T290]  ? drop_nlink+0xc1/0x110
[   24.738710][  T290]  ? report_bug+0x3d9/0x5b0
[   24.743018][  T290]  ? drop_nlink+0xc1/0x110
[   24.747267][  T290]  ? handle_bug+0x41/0x70
[   24.751618][  T290]  ? exc_invalid_op+0x1b/0x50
[   24.756101][  T290]  ? asm_exc_invalid_op+0x12/0x20
[   24.761013][  T290]  ? drop_nlink+0x44/0x110
[   24.765215][  T290]  ? drop_nlink+0xc1/0x110
[   24.769498][  T290]  ? drop_nlink+0xc1/0x110
[   24.773720][  T290]  ? drop_nlink+0xc1/0x110
[   24.777969][  T290]  shmem_rmdir+0x59/0x90
[   24.782081][  T290]  vfs_rmdir+0x2b7/0x3f0
[   24.786131][  T290]  incfs_kill_sb+0x108/0x220
[   24.790589][  T290]  deactivate_locked_super+0xad/0x110
[   24.795764][  T290]  deactivate_super+0xbe/0xf0
[   24.800334][  T290]  cleanup_mnt+0x45c/0x510
[   24.804530][  T290]  __cleanup_mnt+0x19/0x20
[   24.808807][  T290]  task_work_run+0x129/0x190
[   24.813373][  T290]  ptrace_notify+0x29e/0x350
[   24.817788][  T290]  ? do_notify_parent+0xa10/0xa10
[   24.822694][  T290]  ? user_path_at_empty+0x40/0x50
[   24.827546][  T290]  ? __x64_sys_umount+0x122/0x170
[   24.832397][  T290]  ? path_umount+0xea0/0xea0
[   24.836979][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   24.842447][  T290]  do_syscall_64+0x40/0x70
[   24.846894][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   24.852644][  T290] RIP: 0033:0x7f040f7c79a7
[   24.856842][  T290] 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
[   24.876385][  T290] RSP: 002b:00007ffd9a124378 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.884561][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f040f7c79a7
[   24.892384][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd9a124430
[   24.900166][  T290] RBP: 00007ffd9a124430 R08: 0000000000000000 R09: 0000000000000000
[   24.908029][  T290] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd9a1254a0
[   24.915819][  T290] R13: 0000555555aec6c0 R14: 00007ffd9a1254a0 R15: 0000000000000001
[   24.923624][  T290] ---[ end trace ddabaa37a44e5c76 ]---
[   24.928952][  T290] ==================================================================
[   24.936904][  T290] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   24.942946][  T290] Write of size 4 at addr 0000000000000170 by task syz-executor184/290
[   24.951006][  T290] 
[   24.953187][  T290] CPU: 0 PID: 290 Comm: syz-executor184 Tainted: G        W         5.10.218-syzkaller-00638-g3feee789f446 #0
[   24.964637][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   24.974527][  T290] Call Trace:
[   24.977660][  T290]  dump_stack_lvl+0x1e2/0x24b
[   24.982171][  T290]  ? panic+0x812/0x812
[   24.986101][  T290]  ? bfq_pos_tree_add_move+0x43b/0x43b
[   24.991370][  T290]  ? _raw_spin_lock+0xa4/0x1b0
[   24.995970][  T290]  ? _raw_spin_trylock_bh+0x190/0x190
[   25.001177][  T290]  kasan_report+0x167/0x1c0
[   25.005515][  T290]  ? ihold+0x20/0x60
[   25.009247][  T290]  ? ihold+0x20/0x60
[   25.013069][  T290]  kasan_check_range+0x293/0x2a0
[   25.017841][  T290]  __kasan_check_write+0x14/0x20
[   25.022788][  T290]  ihold+0x20/0x60
[   25.026348][  T290]  vfs_rmdir+0x200/0x3f0
[   25.030427][  T290]  incfs_kill_sb+0x108/0x220
[   25.034941][  T290]  deactivate_locked_super+0xad/0x110
[   25.040146][  T290]  deactivate_super+0xbe/0xf0
[   25.044748][  T290]  cleanup_mnt+0x45c/0x510
[   25.048999][  T290]  __cleanup_mnt+0x19/0x20
[   25.053270][  T290]  task_work_run+0x129/0x190
[   25.057682][  T290]  ptrace_notify+0x29e/0x350
[   25.062104][  T290]  ? do_notify_parent+0xa10/0xa10
[   25.066966][  T290]  ? user_path_at_empty+0x40/0x50
[   25.071828][  T290]  ? __x64_sys_umount+0x122/0x170
[   25.076685][  T290]  ? path_umount+0xea0/0xea0
[   25.081113][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   25.086583][  T290]  do_syscall_64+0x40/0x70
[   25.090846][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.096575][  T290] RIP: 0033:0x7f040f7c79a7
[   25.100825][  T290] 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
[   25.120348][  T290] RSP: 002b:00007ffd9a124378 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   25.128594][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f040f7c79a7
[   25.136399][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd9a124430
[   25.144211][  T290] RBP: 00007ffd9a124430 R08: 0000000000000000 R09: 0000000000000000
[   25.152022][  T290] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd9a1254a0
[   25.159832][  T290] R13: 0000555555aec6c0 R14: 00007ffd9a1254a0 R15: 0000000000000001
[   25.167733][  T290] ==================================================================
[   25.175624][  T290] Disabling lock debugging due to kernel taint
[   25.181754][  T290] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   25.189347][  T290] #PF: supervisor write access in kernel mode
[   25.195336][  T290] #PF: error_code(0x0002) - not-present page
[   25.201350][  T290] PGD 0 P4D 0 
[   25.204563][  T290] Oops: 0002 [#1] PREEMPT SMP KASAN
[   25.209600][  T290] CPU: 0 PID: 290 Comm: syz-executor184 Tainted: G    B   W         5.10.218-syzkaller-00638-g3feee789f446 #0
[   25.221052][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[   25.231063][  T290] RIP: 0010:ihold+0x25/0x60
[   25.235571][  T290] 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
[   25.255013][  T290] RSP: 0018:ffffc90000af7c28 EFLAGS: 00010246
[   25.260913][  T290] RAX: ffff88811f051300 RBX: 0000000000000001 RCX: ffff88811f0513c0
[   25.268720][  T290] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   25.276531][  T290] RBP: ffffc90000af7c38 R08: ffffffff813e2c3b R09: 0000000000000003
[   25.284345][  T290] R10: fffffbfff0e10648 R11: dffffc0000000001 R12: dffffc0000000000
[   25.292154][  T290] R13: ffff88811cd29220 R14: 0000000000000000 R15: 0000000000000000
[   25.299985][  T290] FS:  0000555555aeb380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   25.308749][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.315155][  T290] CR2: 0000000000000170 CR3: 000000011ebd9000 CR4: 00000000003506b0
[   25.322971][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.330780][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.338588][  T290] Call Trace:
[   25.341725][  T290]  ? __die_body+0x62/0xb0
[   25.345882][  T290]  ? __die+0x7e/0x90
[   25.349614][  T290]  ? no_context+0xbc8/0xf20
[   25.353952][  T290]  ? is_prefetch+0x5c0/0x5c0
[   25.358399][  T290]  ? preempt_schedule+0xd9/0xe0
[   25.363070][  T290]  ? __kasan_check_read+0x11/0x20
[   25.367925][  T290]  ? preempt_schedule_common+0xbe/0xf0
[   25.373225][  T290]  ? preempt_schedule+0xd9/0xe0
[   25.377912][  T290]  ? schedule_preempt_disabled+0x20/0x20
[   25.383379][  T290]  ? sysvec_apic_timer_interrupt+0xcb/0xe0
[   25.389030][  T290]  ? __bad_area_nosemaphore+0xcd/0x440
[   25.394315][  T290]  ? bad_area_nosemaphore+0x2d/0x40
[   25.399347][  T290]  ? exc_page_fault+0x3ea/0x5b0
[   25.404046][  T290]  ? asm_exc_page_fault+0x1e/0x30
[   25.408895][  T290]  ? check_panic_on_warn+0x5b/0xb0
[   25.413847][  T290]  ? ihold+0x25/0x60
[   25.417574][  T290]  ? ihold+0x20/0x60
[   25.421402][  T290]  vfs_rmdir+0x200/0x3f0
[   25.425495][  T290]  incfs_kill_sb+0x108/0x220
[   25.429899][  T290]  deactivate_locked_super+0xad/0x110
[   25.435106][  T290]  deactivate_super+0xbe/0xf0
[   25.439624][  T290]  cleanup_mnt+0x45c/0x510
[   25.443871][  T290]  __cleanup_mnt+0x19/0x20
[   25.448125][  T290]  task_work_run+0x129/0x190
[   25.452550][  T290]  ptrace_notify+0x29e/0x350
[   25.456978][  T290]  ? do_notify_parent+0xa10/0xa10
[   25.461840][  T290]  ? user_path_at_empty+0x40/0x50
[   25.466698][  T290]  ? __x64_sys_umount+0x122/0x170
[   25.471565][  T290]  ? path_umount+0xea0/0xea0
[   25.475986][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   25.481377][  T290]  do_syscall_64+0x40/0x70
[   25.485707][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.491433][  T290] RIP: 0033:0x7f040f7c79a7
[   25.495687][  T290] 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
[   25.515146][  T290] RSP: 002b:00007ffd9a124378 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   25.523377][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f040f7c79a7
[   25.531184][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd9a124430
[   25.538993][  T290] RBP: 00007ffd9a124430 R08: 0000000000000000 R09: 0000000000000000
[   25.546831][  T290] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd9a1254a0
[   25.554619][  T290] R13: 0000555555aec6c0 R14: 00007ffd9a1254a0 R15: 0000000000000001
[   25.562430][  T290] Modules linked in:
[   25.566173][  T290] CR2: 0000000000000170
[   25.570163][  T290] ---[ end trace ddabaa37a44e5c77 ]---
[   25.575457][  T290] RIP: 0010:ihold+0x25/0x60
[   25.579791][  T290] 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
[   25.599229][  T290] RSP: 0018:ffffc90000af7c28 EFLAGS: 00010246
[   25.605132][  T290] RAX: ffff88811f051300 RBX: 0000000000000001 RCX: ffff88811f0513c0
[   25.612941][  T290] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   25.620757][  T290] RBP: ffffc90000af7c38 R08: ffffffff813e2c3b R09: 0000000000000003
[   25.628695][  T290] R10: fffffbfff0e10648 R11: dffffc0000000001 R12: dffffc0000000000
[   25.636623][  T290] R13: ffff88811cd29220 R14: 0000000000000000 R15: 0000000000000000
[   25.644758][  T290] FS:  0000555555aeb380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   25.653695][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.660052][  T290] CR2: 0000000000000170 CR3: 000000011ebd9000 CR4: 00000000003506b0
[   25.667869][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.675670][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.683504][  T290] Kernel panic - not syncing: Fatal exception
[   25.689586][  T290] Kernel Offset: disabled
[   25.693746][  T290] Rebooting in 86400 seconds..