./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2732962654

<...>
Warning: Permanently added '10.128.1.88' (ED25519) to the list of known hosts.
execve("./syz-executor2732962654", ["./syz-executor2732962654"], 0x7ffdd10e26e0 /* 10 vars */) = 0
brk(NULL)                               = 0x555592dba000
brk(0x555592dbad00)                     = 0x555592dbad00
arch_prctl(ARCH_SET_FS, 0x555592dba380) = 0
set_tid_address(0x555592dba650)         = 294
set_robust_list(0x555592dba660, 24)     = 0
rseq(0x555592dbaca0, 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-executor2732962654", 4096) = 28
getrandom("\x62\x6d\x42\x19\x24\x93\x1b\x34", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555592dbad00
brk(0x555592ddbd00)                     = 0x555592ddbd00
brk(0x555592ddc000)                     = 0x555592ddc000
mprotect(0x7f80507e4000, 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.ujtrrk", 0700)       = 0
chmod("./syzkaller.ujtrrk", 0777)       = 0
chdir("./syzkaller.ujtrrk")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555592dba650) = 295
./strace-static-x86_64: Process 295 attached
[pid   295] set_robust_list(0x555592dba660, 24) = 0
[pid   295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   295] setsid()                    = 1
[pid   295] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   295] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   295] unshare(CLONE_NEWNS)        = 0
[pid   295] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   295] unshare(CLONE_NEWCGROUP)    = 0
[pid   295] unshare(CLONE_NEWUTS)       = 0
[pid   295] unshare(CLONE_SYSVSEM)      = 0
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   295] getpid()                    = 1
[pid   295] 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   295] 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   295] unshare(CLONE_NEWNET)       = 0
[pid   295] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   295] write(3, "0 65535", 7)      = 7
[pid   295] close(3)                    = 0
[pid   295] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   295] write(3, "100000", 6)       = 6
[pid   295] close(3)                    = 0
[pid   295] mkdir("./syz-tmp", 0777)    = 0
[   32.565801][   T24] audit: type=1400 audit(1729443185.770:66): avc:  denied  { execmem } for  pid=294 comm="syz-executor273" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   32.586596][   T24] audit: type=1400 audit(1729443185.770:67): avc:  denied  { mounton } for  pid=295 comm="syz-executor273" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   295] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   295] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   295] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   295] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   295] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   295] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   295] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] 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   295] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   295] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   295] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   295] chdir("/")                  = 0
[pid   295] umount2("./pivot", MNT_DETACH) = 0
[pid   295] chroot("./newroot")         = 0
[pid   295] chdir("/")                  = 0
[   32.630095][   T24] audit: type=1400 audit(1729443185.840:68): avc:  denied  { mounton } for  pid=295 comm="syz-executor273" path="/root/syzkaller.ujtrrk/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   32.654410][   T24] audit: type=1400 audit(1729443185.840:69): avc:  denied  { mount } for  pid=295 comm="syz-executor273" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[pid   295] mkdir("/dev/binderfs", 0777) = 0
[pid   295] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   295] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   295] mkdir("./0", 0777)          = 0
[pid   295] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555592dba650) = 2
./strace-static-x86_64: Process 296 attached
[pid   296] set_robust_list(0x555592dba660, 24) = 0
[pid   296] chdir("./0")                = 0
[pid   296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   296] setpgid(0, 0)               = 0
[pid   296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   296] write(3, "1000", 4)         = 4
[pid   296] close(3)                    = 0
[pid   296] symlink("/dev/binderfs", "./binderfs") = 0
[pid   296] write(1, "executing program\n", 18executing program
) = 18
[pid   296] mkdirat(AT_FDCWD, "./file0", 000) = 0
[pid   296] mount(".", "./file0", NULL, MS_RDONLY|MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   296] mount("./file0", "./file0", "incremental-fs", MS_RDONLY, NULL) = 0
[pid   296] close(3)                    = -1 EBADF (Bad file descriptor)
[   32.676515][   T24] audit: type=1400 audit(1729443185.850:70): avc:  denied  { mounton } for  pid=295 comm="syz-executor273" path="/root/syzkaller.ujtrrk/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
[   32.701731][   T24] audit: type=1400 audit(1729443185.850:71): avc:  denied  { mount } for  pid=295 comm="syz-executor273" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   32.706970][  T296] incfs: ino conflict with backing FS 8
[pid   296] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   296] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   296] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   296] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   296] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   296] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   296] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   296] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   296] exit_group(0)               = ?
[pid   296] +++ exited with 0 +++
[pid   295] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid   295] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   295] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   295] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   295] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   295] getdents64(3, 0x555592dbb6f0 /* 6 entries */, 32768) = 176
[pid   295] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   295] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   295] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   295] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   295] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   295] getdents64(4, 0x555592dc3730 /* 2 entries */, 32768) = 48
[pid   295] getdents64(4, 0x555592dc3730 /* 0 entries */, 32768) = 0
[pid   295] close(4)                    = 0
[pid   295] rmdir("./0/.incomplete")    = 0
[pid   295] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   295] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   295] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   295] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   295] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   295] getdents64(4, 0x555592dc3730 /* 2 entries */, 32768) = 48
[pid   295] getdents64(4, 0x555592dc3730 /* 0 entries */, 32768) = 0
[pid   295] close(4)                    = 0
[pid   295] rmdir("./0/.index")         = 0
[   32.723993][   T24] audit: type=1400 audit(1729443185.860:72): avc:  denied  { mounton } for  pid=295 comm="syz-executor273" path="/root/syzkaller.ujtrrk/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
[   32.755628][   T24] audit: type=1400 audit(1729443185.860:73): avc:  denied  { mounton } for  pid=295 comm="syz-executor273" path="/root/syzkaller.ujtrrk/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=13738 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   32.783101][   T24] audit: type=1400 audit(1729443185.870:74): avc:  denied  { unmount } for  pid=295 comm="syz-executor273" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   32.783886][  T295] ------------[ cut here ]------------
[   32.802659][   T24] audit: type=1400 audit(1729443185.880:75): avc:  denied  { mounton } for  pid=295 comm="syz-executor273" path="/dev/binderfs" dev="devtmpfs" ino=357 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   32.831184][  T295] WARNING: CPU: 1 PID: 295 at fs/inode.c:304 drop_nlink+0xc1/0x110
[   32.838957][  T295] Modules linked in:
[   32.842654][  T295] CPU: 1 PID: 295 Comm: syz-executor273 Not tainted 5.10.226-syzkaller-00709-ge5e5644ea27f #0
[   32.852881][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   32.862795][  T295] RIP: 0010:drop_nlink+0xc1/0x110
[   32.867587][  T295] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 a7 cc f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 af 30 b3 ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   32.887161][  T295] RSP: 0018:ffffc90000b27be8 EFLAGS: 00010293
[   32.893192][  T295] RAX: ffffffff81b77c41 RBX: 0000000000000000 RCX: ffff8881075e3b40
[   32.901010][  T295] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   32.908777][  T295] RBP: ffffc90000b27c10 R08: ffffffff81b77bc4 R09: 0000000000000003
[   32.916573][  T295] R10: fffff52000164f6c R11: dffffc0000000001 R12: dffffc0000000000
[   32.924433][  T295] R13: 1ffff110241fe971 R14: ffff888120ff4b40 R15: ffff888120ff4b88
[   32.932349][  T295] FS:  0000555592dba380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   32.941122][  T295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.947510][  T295] CR2: 000055722daa02e8 CR3: 000000011ca93000 CR4: 00000000003506a0
[   32.955358][  T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.963154][  T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.970964][  T295] Call Trace:
[   32.974076][  T295]  ? show_regs+0x58/0x60
[   32.978195][  T295]  ? __warn+0x160/0x2f0
[   32.982187][  T295]  ? drop_nlink+0xc1/0x110
[   32.986402][  T295]  ? report_bug+0x3d9/0x5b0
[   32.990817][  T295]  ? drop_nlink+0xc1/0x110
[   32.995105][  T295]  ? handle_bug+0x41/0x70
[   32.999324][  T295]  ? exc_invalid_op+0x1b/0x50
[   33.003783][  T295]  ? asm_exc_invalid_op+0x12/0x20
[   33.008802][  T295]  ? drop_nlink+0x44/0x110
[   33.012987][  T295]  ? drop_nlink+0xc1/0x110
[   33.017272][  T295]  ? drop_nlink+0xc1/0x110
[   33.021542][  T295]  ? drop_nlink+0xc1/0x110
[   33.025747][  T295]  shmem_rmdir+0x59/0x90
[   33.029868][  T295]  vfs_rmdir+0x2b7/0x3f0
[   33.033903][  T295]  incfs_kill_sb+0x108/0x220
[   33.038383][  T295]  deactivate_locked_super+0xad/0x110
[   33.043542][  T295]  deactivate_super+0xbe/0xf0
[   33.048053][  T295]  cleanup_mnt+0x45c/0x510
[   33.052377][  T295]  __cleanup_mnt+0x19/0x20
[   33.057216][  T295]  task_work_run+0x129/0x190
[   33.061688][  T295]  ptrace_notify+0x29e/0x350
[   33.066070][  T295]  ? do_notify_parent+0xa10/0xa10
[   33.070965][  T295]  ? user_path_at_empty+0x40/0x50
[   33.075788][  T295]  ? __x64_sys_umount+0x122/0x170
[   33.080695][  T295]  ? path_umount+0xea0/0xea0
[   33.085088][  T295]  syscall_exit_to_user_mode+0xf5/0x1a0
[   33.090493][  T295]  do_syscall_64+0x40/0x70
[   33.094711][  T295]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   33.100462][  T295] RIP: 0033:0x7f8050771a27
[   33.104686][  T295] 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
[   33.124172][  T295] RSP: 002b:00007ffc65619a28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   33.132498][  T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8050771a27
[   33.140332][  T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc65619ae0
[   33.148304][  T295] RBP: 00007ffc65619ae0 R08: 0000000000000000 R09: 0000000000000000
[   33.156527][  T295] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc6561ab50
[   33.164443][  T295] R13: 0000555592dbb6c0 R14: 00007ffc6561ab50 R15: 0000000000000001
[   33.172228][  T295] ---[ end trace 008039d030762630 ]---
[   33.177589][  T295] ==================================================================
[   33.185415][  T295] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   33.191481][  T295] Write of size 4 at addr 0000000000000170 by task syz-executor273/295
[   33.199541][  T295] 
[   33.201732][  T295] CPU: 1 PID: 295 Comm: syz-executor273 Tainted: G        W         5.10.226-syzkaller-00709-ge5e5644ea27f #0
[   33.213176][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   33.223063][  T295] Call Trace:
[   33.226209][  T295]  dump_stack_lvl+0x1e2/0x24b
[   33.230719][  T295]  ? panic+0x812/0x812
[   33.234630][  T295]  ? bfq_pos_tree_add_move+0x43b/0x43b
[   33.239921][  T295]  ? _raw_spin_lock+0xa4/0x1b0
[   33.244526][  T295]  ? _raw_spin_trylock_bh+0x190/0x190
[   33.249744][  T295]  kasan_report+0x167/0x1c0
[   33.254073][  T295]  ? ihold+0x20/0x60
[   33.257802][  T295]  ? ihold+0x20/0x60
[   33.261538][  T295]  kasan_check_range+0x293/0x2a0
[   33.266309][  T295]  __kasan_check_write+0x14/0x20
[   33.271080][  T295]  ihold+0x20/0x60
[   33.274646][  T295]  vfs_rmdir+0x200/0x3f0
[   33.278722][  T295]  incfs_kill_sb+0x108/0x220
[   33.283157][  T295]  deactivate_locked_super+0xad/0x110
[   33.288356][  T295]  deactivate_super+0xbe/0xf0
[   33.292879][  T295]  cleanup_mnt+0x45c/0x510
[   33.297215][  T295]  __cleanup_mnt+0x19/0x20
[   33.301465][  T295]  task_work_run+0x129/0x190
[   33.305893][  T295]  ptrace_notify+0x29e/0x350
[   33.310404][  T295]  ? do_notify_parent+0xa10/0xa10
[   33.315270][  T295]  ? user_path_at_empty+0x40/0x50
[   33.320125][  T295]  ? __x64_sys_umount+0x122/0x170
[   33.324991][  T295]  ? path_umount+0xea0/0xea0
[   33.329424][  T295]  syscall_exit_to_user_mode+0xf5/0x1a0
[   33.334792][  T295]  do_syscall_64+0x40/0x70
[   33.339059][  T295]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   33.344768][  T295] RIP: 0033:0x7f8050771a27
[   33.349025][  T295] 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
[   33.368554][  T295] RSP: 002b:00007ffc65619a28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   33.376796][  T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8050771a27
[   33.384607][  T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc65619ae0
[   33.392419][  T295] RBP: 00007ffc65619ae0 R08: 0000000000000000 R09: 0000000000000000
[   33.400235][  T295] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc6561ab50
[   33.408045][  T295] R13: 0000555592dbb6c0 R14: 00007ffc6561ab50 R15: 0000000000000001
[   33.415856][  T295] ==================================================================
[   33.423744][  T295] Disabling lock debugging due to kernel taint
[   33.430027][  T295] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   33.437699][  T295] #PF: supervisor write access in kernel mode
[   33.443595][  T295] #PF: error_code(0x0002) - not-present page
[   33.449408][  T295] PGD 0 P4D 0 
[   33.452640][  T295] Oops: 0002 [#1] PREEMPT SMP KASAN
[   33.457682][  T295] CPU: 1 PID: 295 Comm: syz-executor273 Tainted: G    B   W         5.10.226-syzkaller-00709-ge5e5644ea27f #0
[   33.469120][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   33.479122][  T295] RIP: 0010:ihold+0x25/0x60
[   33.483457][  T295] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 c1 28 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 90 c4 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 2c b3
[   33.502890][  T295] RSP: 0018:ffffc90000b27c28 EFLAGS: 00010246
[   33.508800][  T295] RAX: ffff8881075e3b00 RBX: 0000000000000001 RCX: ffff8881075e3b40
[   33.516603][  T295] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   33.524421][  T295] RBP: ffffc90000b27c38 R08: ffffffff813e2a7b R09: 0000000000000003
[   33.532230][  T295] R10: fffffbfff0e10c48 R11: dffffc0000000001 R12: dffffc0000000000
[   33.540039][  T295] R13: ffff88811d2cb000 R14: 0000000000000000 R15: 0000000000000000
[   33.547860][  T295] FS:  0000555592dba380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   33.556631][  T295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.563045][  T295] CR2: 0000000000000170 CR3: 000000011ca93000 CR4: 00000000003506a0
[   33.570856][  T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.578671][  T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.586465][  T295] Call Trace:
[   33.589617][  T295]  ? __die_body+0x62/0xb0
[   33.593776][  T295]  ? __die+0x7e/0x90
[   33.597510][  T295]  ? no_context+0x9f9/0xd20
[   33.601864][  T295]  ? is_prefetch+0x5c0/0x5c0
[   33.606275][  T295]  ? preempt_schedule+0xd9/0xe0
[   33.610968][  T295]  ? __kasan_check_read+0x11/0x20
[   33.615832][  T295]  ? preempt_schedule_common+0xbe/0xf0
[   33.621117][  T295]  ? preempt_schedule+0xd9/0xe0
[   33.625808][  T295]  ? schedule_preempt_disabled+0x20/0x20
[   33.631283][  T295]  ? sysvec_apic_timer_interrupt+0xcb/0xe0
[   33.636919][  T295]  ? __bad_area_nosemaphore+0xc4/0x430
[   33.642222][  T295]  ? bad_area_nosemaphore+0x2d/0x40
[   33.647251][  T295]  ? exc_page_fault+0x3df/0x5b0
[   33.651943][  T295]  ? asm_exc_page_fault+0x1e/0x30
[   33.656799][  T295]  ? check_panic_on_warn+0x5b/0xb0
[   33.661749][  T295]  ? ihold+0x25/0x60
[   33.665473][  T295]  ? ihold+0x20/0x60
[   33.669212][  T295]  vfs_rmdir+0x200/0x3f0
[   33.673298][  T295]  incfs_kill_sb+0x108/0x220
[   33.677719][  T295]  deactivate_locked_super+0xad/0x110
[   33.682929][  T295]  deactivate_super+0xbe/0xf0
[   33.687438][  T295]  cleanup_mnt+0x45c/0x510
[   33.691696][  T295]  __cleanup_mnt+0x19/0x20
[   33.695943][  T295]  task_work_run+0x129/0x190
[   33.700383][  T295]  ptrace_notify+0x29e/0x350
[   33.704804][  T295]  ? do_notify_parent+0xa10/0xa10
[   33.709665][  T295]  ? user_path_at_empty+0x40/0x50
[   33.714518][  T295]  ? __x64_sys_umount+0x122/0x170
[   33.719380][  T295]  ? path_umount+0xea0/0xea0
[   33.723815][  T295]  syscall_exit_to_user_mode+0xf5/0x1a0
[   33.729197][  T295]  do_syscall_64+0x40/0x70
[   33.733446][  T295]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   33.739159][  T295] RIP: 0033:0x7f8050771a27
[   33.743506][  T295] 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
[   33.762942][  T295] RSP: 002b:00007ffc65619a28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   33.771189][  T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8050771a27
[   33.779000][  T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc65619ae0
[   33.786820][  T295] RBP: 00007ffc65619ae0 R08: 0000000000000000 R09: 0000000000000000
[   33.794637][  T295] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc6561ab50
[   33.802434][  T295] R13: 0000555592dbb6c0 R14: 00007ffc6561ab50 R15: 0000000000000001
[   33.810244][  T295] Modules linked in:
[   33.813991][  T295] CR2: 0000000000000170
[   33.817986][  T295] ---[ end trace 008039d030762631 ]---
[   33.823291][  T295] RIP: 0010:ihold+0x25/0x60
[   33.827617][  T295] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 c1 28 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 90 c4 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 2c b3
[   33.847053][  T295] RSP: 0018:ffffc90000b27c28 EFLAGS: 00010246
[   33.852955][  T295] RAX: ffff8881075e3b00 RBX: 0000000000000001 RCX: ffff8881075e3b40
[   33.860762][  T295] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   33.868580][  T295] RBP: ffffc90000b27c38 R08: ffffffff813e2a7b R09: 0000000000000003
[   33.876391][  T295] R10: fffffbfff0e10c48 R11: dffffc0000000001 R12: dffffc0000000000
[   33.884286][  T295] R13: ffff88811d2cb000 R14: 0000000000000000 R15: 0000000000000000
[   33.892110][  T295] FS:  0000555592dba380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   33.900871][  T295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.907292][  T295] CR2: 0000000000000170 CR3: 000000011ca93000 CR4: 00000000003506a0
[   33.915369][  T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.923175][  T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.930980][  T295] Kernel panic - not syncing: Fatal exception
[   33.937692][  T295] Kernel Offset: disabled
[   33.941846][  T295] Rebooting in 86400 seconds..