./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1049872810

<...>
Warning: Permanently added '10.128.0.21' (ED25519) to the list of known hosts.
execve("./syz-executor1049872810", ["./syz-executor1049872810"], 0x7ffe3c2c64f0 /* 10 vars */) = 0
brk(NULL)                               = 0x55558ad6b000
brk(0x55558ad6bd00)                     = 0x55558ad6bd00
arch_prctl(ARCH_SET_FS, 0x55558ad6b380) = 0
set_tid_address(0x55558ad6b650)         = 289
set_robust_list(0x55558ad6b660, 24)     = 0
rseq(0x55558ad6bca0, 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-executor1049872810", 4096) = 28
getrandom("\x7f\x72\x1e\x28\x50\xe7\xf9\x93", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55558ad6bd00
brk(0x55558ad8cd00)                     = 0x55558ad8cd00
brk(0x55558ad8d000)                     = 0x55558ad8d000
mprotect(0x7f7c93da2000, 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.pnwovH", 0700)       = 0
chmod("./syzkaller.pnwovH", 0777)       = 0
chdir("./syzkaller.pnwovH")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558ad6b650) = 290
./strace-static-x86_64: Process 290 attached
[pid   290] set_robust_list(0x55558ad6b660, 24) = 0
[pid   290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   290] getppid()                   = 0
[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
[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] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   290] 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   290] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", 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
[   22.779662][   T24] audit: type=1400 audit(1732673495.849:66): avc:  denied  { execmem } for  pid=289 comm="syz-executor104" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   22.788171][   T24] audit: type=1400 audit(1732673495.849:67): avc:  denied  { mounton } for  pid=290 comm="syz-executor104" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[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] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   290] mkdir("./0", 0777)          = 0
[pid   290] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558ad6b650) = 2
./strace-static-x86_64: Process 291 attached
[pid   291] set_robust_list(0x55558ad6b660, 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)
[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=2} ---
[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, 0x55558ad6c6f0 /* 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, 0x55558ad74730 /* 2 entries */, 32768) = 48
[pid   290] getdents64(4, 0x55558ad74730 /* 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, 0x55558ad74730 /* 2 entries */, 32768) = 48
[pid   290] getdents64(4, 0x55558ad74730 /* 0 entries */, 32768) = 0
[pid   290] close(4)                    = 0
[pid   290] rmdir("./0/.index")         = 0
[   22.810209][   T24] audit: type=1400 audit(1732673495.879:68): avc:  denied  { mounton } for  pid=290 comm="syz-executor104" path="/root/syzkaller.pnwovH/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   22.835043][   T24] audit: type=1400 audit(1732673495.879:69): avc:  denied  { mount } for  pid=290 comm="syz-executor104" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   22.842312][  T291] incfs: ino conflict with backing FS 8
[   22.857628][   T24] audit: type=1400 audit(1732673495.879:70): avc:  denied  { mounton } for  pid=290 comm="syz-executor104" path="/root/syzkaller.pnwovH/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
[   22.887582][  T290] ------------[ cut here ]------------
[   22.887950][   T24] audit: type=1400 audit(1732673495.879:71): avc:  denied  { mount } for  pid=290 comm="syz-executor104" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   22.893139][  T290] WARNING: CPU: 0 PID: 290 at fs/inode.c:304 drop_nlink+0xc1/0x110
[   22.922402][   T24] audit: type=1400 audit(1732673495.879:72): avc:  denied  { mounton } for  pid=290 comm="syz-executor104" path="/root/syzkaller.pnwovH/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
[   22.922579][  T290] Modules linked in:
[   22.948811][   T24] audit: type=1400 audit(1732673495.879:73): avc:  denied  { mounton } for  pid=290 comm="syz-executor104" path="/root/syzkaller.pnwovH/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14034 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   22.948824][   T24] audit: type=1400 audit(1732673495.879:74): avc:  denied  { unmount } for  pid=290 comm="syz-executor104" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   22.948840][   T24] audit: type=1400 audit(1732673495.899:75): avc:  denied  { mounton } for  pid=290 comm="syz-executor104" path="/dev/binderfs" dev="devtmpfs" ino=509 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   23.021949][  T290] 
[   23.024084][  T290] CPU: 0 PID: 290 Comm: syz-executor104 Not tainted 5.10.226-syzkaller-00184-g139a6bb26d9d #0
[   23.034183][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   23.044085][  T290] RIP: 0010:drop_nlink+0xc1/0x110
[   23.048927][  T290] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 27 cc f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 2f 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
[   23.068371][  T290] RSP: 0018:ffffc90000b07be8 EFLAGS: 00010293
[   23.074243][  T290] RAX: ffffffff81b78c91 RBX: 0000000000000000 RCX: ffff88810d02e2c0
[   23.082085][  T290] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   23.089890][  T290] RBP: ffffc90000b07c10 R08: ffffffff81b78c14 R09: 0000000000000003
[   23.097675][  T290] R10: fffff52000160f6c R11: dffffc0000000001 R12: dffffc0000000000
[   23.105524][  T290] R13: 1ffff11023584511 R14: ffff88811ac22840 R15: ffff88811ac22888
[   23.113314][  T290] FS:  000055558ad6b380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   23.122093][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.128502][  T290] CR2: 0000555a67991338 CR3: 000000010b8c7000 CR4: 00000000003506b0
[   23.136300][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.144135][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.151935][  T290] Call Trace:
[   23.155056][  T290]  ? show_regs+0x58/0x60
[   23.159162][  T290]  ? __warn+0x160/0x2f0
[   23.163127][  T290]  ? drop_nlink+0xc1/0x110
[   23.167378][  T290]  ? report_bug+0x3d9/0x5b0
[   23.171746][  T290]  ? drop_nlink+0xc1/0x110
[   23.175972][  T290]  ? handle_bug+0x41/0x70
[   23.180172][  T290]  ? exc_invalid_op+0x1b/0x50
[   23.184668][  T290]  ? asm_exc_invalid_op+0x12/0x20
[   23.189542][  T290]  ? drop_nlink+0x44/0x110
[   23.193766][  T290]  ? drop_nlink+0xc1/0x110
[   23.198013][  T290]  ? drop_nlink+0xc1/0x110
[   23.202302][  T290]  ? drop_nlink+0xc1/0x110
[   23.206524][  T290]  shmem_rmdir+0x59/0x90
[   23.210629][  T290]  vfs_rmdir+0x2b7/0x3f0
[   23.214692][  T290]  incfs_kill_sb+0x108/0x220
[   23.219172][  T290]  deactivate_locked_super+0xad/0x110
[   23.224440][  T290]  deactivate_super+0xbe/0xf0
[   23.228983][  T290]  cleanup_mnt+0x45c/0x510
[   23.233185][  T290]  __cleanup_mnt+0x19/0x20
[   23.237436][  T290]  task_work_run+0x129/0x190
[   23.241896][  T290]  ptrace_notify+0x29e/0x350
[   23.246291][  T290]  ? do_notify_parent+0xa10/0xa10
[   23.251180][  T290]  ? user_path_at_empty+0x40/0x50
[   23.256015][  T290]  ? __x64_sys_umount+0x122/0x170
[   23.261041][  T290]  ? path_umount+0xea0/0xea0
[   23.265406][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.270980][  T290]  do_syscall_64+0x40/0x70
[   23.275183][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.280959][  T290] RIP: 0033:0x7f7c93d2fa07
[   23.285154][  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
[   23.304641][  T290] RSP: 002b:00007ffdb3348cf8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.312855][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7c93d2fa07
[   23.320671][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb3348db0
[   23.328475][  T290] RBP: 00007ffdb3348db0 R08: 0000000000000000 R09: 0000000000000000
[   23.336267][  T290] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffdb3349e20
[   23.344114][  T290] R13: 000055558ad6c6c0 R14: 00007ffdb3349e20 R15: 0000000000000001
[   23.351909][  T290] ---[ end trace cb4824a7a0dcb4b3 ]---
[   23.357220][  T290] ==================================================================
[   23.365087][  T290] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   23.371160][  T290] Write of size 4 at addr 0000000000000170 by task syz-executor104/290
[   23.379401][  T290] 
[   23.381583][  T290] CPU: 0 PID: 290 Comm: syz-executor104 Tainted: G        W         5.10.226-syzkaller-00184-g139a6bb26d9d #0
[   23.393036][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   23.402939][  T290] Call Trace:
[   23.406064][  T290]  dump_stack_lvl+0x1e2/0x24b
[   23.410569][  T290]  ? panic+0x812/0x812
[   23.414475][  T290]  ? bfq_pos_tree_add_move+0x43b/0x43b
[   23.419769][  T290]  ? _raw_spin_lock+0xa4/0x1b0
[   23.424373][  T290]  ? _raw_spin_trylock_bh+0x190/0x190
[   23.429589][  T290]  kasan_report+0x167/0x1c0
[   23.433932][  T290]  ? ihold+0x20/0x60
[   23.437652][  T290]  ? ihold+0x20/0x60
[   23.441386][  T290]  kasan_check_range+0x293/0x2a0
[   23.446157][  T290]  __kasan_check_write+0x14/0x20
[   23.450935][  T290]  ihold+0x20/0x60
[   23.454492][  T290]  vfs_rmdir+0x200/0x3f0
[   23.458566][  T290]  incfs_kill_sb+0x108/0x220
[   23.462993][  T290]  deactivate_locked_super+0xad/0x110
[   23.468198][  T290]  deactivate_super+0xbe/0xf0
[   23.472716][  T290]  cleanup_mnt+0x45c/0x510
[   23.476970][  T290]  __cleanup_mnt+0x19/0x20
[   23.481217][  T290]  task_work_run+0x129/0x190
[   23.485645][  T290]  ptrace_notify+0x29e/0x350
[   23.490071][  T290]  ? do_notify_parent+0xa10/0xa10
[   23.494930][  T290]  ? user_path_at_empty+0x40/0x50
[   23.499791][  T290]  ? __x64_sys_umount+0x122/0x170
[   23.504652][  T290]  ? path_umount+0xea0/0xea0
[   23.509080][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.514467][  T290]  do_syscall_64+0x40/0x70
[   23.518712][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.524449][  T290] RIP: 0033:0x7f7c93d2fa07
[   23.528704][  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
[   23.548134][  T290] RSP: 002b:00007ffdb3348cf8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.556382][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7c93d2fa07
[   23.564190][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb3348db0
[   23.572001][  T290] RBP: 00007ffdb3348db0 R08: 0000000000000000 R09: 0000000000000000
[   23.579812][  T290] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffdb3349e20
[   23.587624][  T290] R13: 000055558ad6c6c0 R14: 00007ffdb3349e20 R15: 0000000000000001
[   23.595436][  T290] ==================================================================
[   23.603335][  T290] Disabling lock debugging due to kernel taint
[   23.609452][  T290] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   23.617066][  T290] #PF: supervisor write access in kernel mode
[   23.622959][  T290] #PF: error_code(0x0002) - not-present page
[   23.628774][  T290] PGD 0 P4D 0 
[   23.631990][  T290] Oops: 0002 [#1] PREEMPT SMP KASAN
[   23.637025][  T290] CPU: 1 PID: 290 Comm: syz-executor104 Tainted: G    B   W         5.10.226-syzkaller-00184-g139a6bb26d9d #0
[   23.648478][  T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   23.658384][  T290] RIP: 0010:ihold+0x25/0x60
[   23.662715][  T290] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 41 28 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 10 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 c4 2b b3
[   23.682155][  T290] RSP: 0018:ffffc90000b07c28 EFLAGS: 00010246
[   23.688055][  T290] RAX: ffff88810d02e200 RBX: 0000000000000001 RCX: ffff88810d02e2c0
[   23.695870][  T290] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   23.703682][  T290] RBP: ffffc90000b07c38 R08: ffffffff813e2a7b R09: 0000000000000003
[   23.711510][  T290] R10: fffffbfff0e10e48 R11: dffffc0000000001 R12: dffffc0000000000
[   23.719304][  T290] R13: ffff888120c56110 R14: 0000000000000000 R15: 0000000000000000
[   23.727115][  T290] FS:  000055558ad6b380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   23.735881][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.742303][  T290] CR2: 0000000000000170 CR3: 000000010b8c7000 CR4: 00000000003506a0
[   23.750116][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.757928][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.765733][  T290] Call Trace:
[   23.768869][  T290]  ? __die_body+0x62/0xb0
[   23.773031][  T290]  ? __die+0x7e/0x90
[   23.776763][  T290]  ? no_context+0x9f9/0xd20
[   23.781104][  T290]  ? is_prefetch+0x5c0/0x5c0
[   23.785528][  T290]  ? preempt_schedule+0xd9/0xe0
[   23.790216][  T290]  ? __kasan_check_read+0x11/0x20
[   23.795075][  T290]  ? preempt_schedule_common+0xbe/0xf0
[   23.800371][  T290]  ? preempt_schedule+0xd9/0xe0
[   23.805055][  T290]  ? schedule_preempt_disabled+0x20/0x20
[   23.810527][  T290]  ? sysvec_apic_timer_interrupt+0xcb/0xe0
[   23.816189][  T290]  ? __bad_area_nosemaphore+0xc4/0x430
[   23.821464][  T290]  ? bad_area_nosemaphore+0x2d/0x40
[   23.826502][  T290]  ? exc_page_fault+0x3df/0x5b0
[   23.831188][  T290]  ? asm_exc_page_fault+0x1e/0x30
[   23.836048][  T290]  ? check_panic_on_warn+0x5b/0xb0
[   23.840992][  T290]  ? ihold+0x25/0x60
[   23.844721][  T290]  ? ihold+0x20/0x60
[   23.848461][  T290]  vfs_rmdir+0x200/0x3f0
[   23.852536][  T290]  incfs_kill_sb+0x108/0x220
[   23.856960][  T290]  deactivate_locked_super+0xad/0x110
[   23.862169][  T290]  deactivate_super+0xbe/0xf0
[   23.866681][  T290]  cleanup_mnt+0x45c/0x510
[   23.870934][  T290]  __cleanup_mnt+0x19/0x20
[   23.875186][  T290]  task_work_run+0x129/0x190
[   23.879618][  T290]  ptrace_notify+0x29e/0x350
[   23.884037][  T290]  ? do_notify_parent+0xa10/0xa10
[   23.888900][  T290]  ? user_path_at_empty+0x40/0x50
[   23.893760][  T290]  ? __x64_sys_umount+0x122/0x170
[   23.898626][  T290]  ? path_umount+0xea0/0xea0
[   23.903047][  T290]  syscall_exit_to_user_mode+0xf5/0x1a0
[   23.908427][  T290]  do_syscall_64+0x40/0x70
[   23.912682][  T290]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   23.918407][  T290] RIP: 0033:0x7f7c93d2fa07
[   23.922664][  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
[   23.942102][  T290] RSP: 002b:00007ffdb3348cf8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.950347][  T290] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7c93d2fa07
[   23.958157][  T290] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb3348db0
[   23.965969][  T290] RBP: 00007ffdb3348db0 R08: 0000000000000000 R09: 0000000000000000
[   23.973783][  T290] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffdb3349e20
[   23.981615][  T290] R13: 000055558ad6c6c0 R14: 00007ffdb3349e20 R15: 0000000000000001
[   23.989404][  T290] Modules linked in:
[   23.993151][  T290] CR2: 0000000000000170
[   23.997142][  T290] ---[ end trace cb4824a7a0dcb4b4 ]---
[   24.002440][  T290] RIP: 0010:ihold+0x25/0x60
[   24.006765][  T290] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 41 28 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 10 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 c4 2b b3
[   24.026206][  T290] RSP: 0018:ffffc90000b07c28 EFLAGS: 00010246
[   24.032106][  T290] RAX: ffff88810d02e200 RBX: 0000000000000001 RCX: ffff88810d02e2c0
[   24.039916][  T290] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   24.047729][  T290] RBP: ffffc90000b07c38 R08: ffffffff813e2a7b R09: 0000000000000003
[   24.055542][  T290] R10: fffffbfff0e10e48 R11: dffffc0000000001 R12: dffffc0000000000
[   24.063352][  T290] R13: ffff888120c56110 R14: 0000000000000000 R15: 0000000000000000
[   24.071164][  T290] FS:  000055558ad6b380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   24.079929][  T290] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.086353][  T290] CR2: 0000000000000170 CR3: 000000010b8c7000 CR4: 00000000003506a0
[   24.094166][  T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.101974][  T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.109785][  T290] Kernel panic - not syncing: Fatal exception
[   24.115870][  T290] Kernel Offset: disabled
[   24.119988][  T290] Rebooting in 86400 seconds..