./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor694417553

<...>
Warning: Permanently added '10.128.0.175' (ED25519) to the list of known hosts.
execve("./syz-executor694417553", ["./syz-executor694417553"], 0x7fff60671d80 /* 10 vars */) = 0
brk(NULL)                               = 0x555579595000
brk(0x555579595d00)                     = 0x555579595d00
arch_prctl(ARCH_SET_FS, 0x555579595380) = 0
set_tid_address(0x555579595650)         = 294
set_robust_list(0x555579595660, 24)     = 0
rseq(0x555579595ca0, 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-executor694417553", 4096) = 27
getrandom("\x1d\xe5\xdb\xe4\xce\xfd\x8d\xb8", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555579595d00
brk(0x5555795b6d00)                     = 0x5555795b6d00
brk(0x5555795b7000)                     = 0x5555795b7000
mprotect(0x7f75b4976000, 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.UOp2nj", 0700)       = 0
chmod("./syzkaller.UOp2nj", 0777)       = 0
chdir("./syzkaller.UOp2nj")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555579595650) = 295
./strace-static-x86_64: Process 295 attached
[pid   295] set_robust_list(0x555579595660, 24) = 0
[pid   295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   295] getppid()                   = 0
[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
[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
[   23.178164][   T30] audit: type=1400 audit(1736375701.688:66): avc:  denied  { execmem } for  pid=294 comm="syz-executor694" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   23.198937][   T30] audit: type=1400 audit(1736375701.688:67): avc:  denied  { mounton } for  pid=295 comm="syz-executor694" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   295] umount2("./pivot", MNT_DETACH) = 0
[pid   295] chroot("./newroot")         = 0
[pid   295] chdir("/")                  = 0
[pid   295] mkdir("/dev/gadgetfs", 0777) = 0
[pid   295] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[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=0x555579595650) = 2
./strace-static-x86_64: Process 296 attached
[pid   296] set_robust_list(0x555579595660, 24) = 0
[pid   296] chdir("./0")                = 0
[   23.221019][   T30] audit: type=1400 audit(1736375701.718:68): avc:  denied  { mounton } for  pid=295 comm="syz-executor694" path="/root/syzkaller.UOp2nj/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   23.245646][   T30] audit: type=1400 audit(1736375701.718:69): avc:  denied  { mount } for  pid=295 comm="syz-executor694" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   23.247892][  T295] request_module fs-gadgetfs succeeded, but still no fs?
[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
executing program
[pid   296] symlink("/dev/binderfs", "./binderfs") = 0
[pid   296] write(1, "executing program\n", 18) = 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)
[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=3} ---
[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, 0x5555795966f0 /* 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, 0x55557959e730 /* 2 entries */, 32768) = 48
[pid   295] getdents64(4, 0x55557959e730 /* 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, 0x55557959e730 /* 2 entries */, 32768) = 48
[pid   295] getdents64(4, 0x55557959e730 /* 0 entries */, 32768) = 0
[pid   295] close(4)                    = 0
[pid   295] rmdir("./0/.index")         = 0
[   23.268554][   T30] audit: type=1400 audit(1736375701.718:70): avc:  denied  { mounton } for  pid=295 comm="syz-executor694" path="/root/syzkaller.UOp2nj/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
[   23.284508][  T296] incfs: ino conflict with backing FS 8
[   23.301187][   T30] audit: type=1400 audit(1736375701.738:71): avc:  denied  { mount } for  pid=295 comm="syz-executor694" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   23.328276][  T295] ------------[ cut here ]------------
[   23.328584][   T30] audit: type=1400 audit(1736375701.738:72): avc:  denied  { mounton } for  pid=295 comm="syz-executor694" path="/root/syzkaller.UOp2nj/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
[   23.333884][  T295] WARNING: CPU: 0 PID: 295 at fs/inode.c:307 drop_nlink+0xc1/0x110
[   23.360508][   T30] audit: type=1400 audit(1736375701.738:73): avc:  denied  { mounton } for  pid=295 comm="syz-executor694" path="/root/syzkaller.UOp2nj/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14079 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   23.368319][  T295] Modules linked in:
[   23.396247][   T30] audit: type=1400 audit(1736375701.738:74): avc:  denied  { unmount } for  pid=295 comm="syz-executor694" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   23.400016][  T295] CPU: 0 PID: 295 Comm: syz-executor694 Not tainted 5.15.175-syzkaller-00803-g19092c8155b4 #0
[   23.419589][   T30] audit: type=1400 audit(1736375701.768:75): avc:  denied  { mounton } for  pid=295 comm="syz-executor694" path="/dev/gadgetfs" dev="devtmpfs" ino=514 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   23.429862][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   23.462782][  T295] RIP: 0010:drop_nlink+0xc1/0x110
[   23.467750][  T295] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 97 f4 f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 0f 99 ae ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   23.487281][  T295] RSP: 0018:ffffc90000a27bc8 EFLAGS: 00010293
[   23.493144][  T295] RAX: ffffffff81c1d351 RBX: 0000000000000000 RCX: ffff888123c7bb40
[   23.501076][  T295] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   23.508889][  T295] RBP: ffffc90000a27bf0 R08: ffffffff81c1d2d4 R09: 0000000000000003
[   23.516709][  T295] R10: fffff52000144f68 R11: dffffc0000000001 R12: dffffc0000000000
[   23.524499][  T295] R13: 1ffff11024c17bee R14: ffff8881260bdf28 R15: ffff8881260bdf70
[   23.532411][  T295] FS:  0000555579595380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   23.541286][  T295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.547690][  T295] CR2: 000055a556dfa338 CR3: 0000000126061000 CR4: 00000000003506b0
[   23.555511][  T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.563300][  T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.571100][  T295] Call Trace:
[   23.574272][  T295]  <TASK>
[   23.577090][  T295]  ? show_regs+0x58/0x60
[   23.581166][  T295]  ? __warn+0x160/0x2f0
[   23.585196][  T295]  ? drop_nlink+0xc1/0x110
[   23.589425][  T295]  ? report_bug+0x3d9/0x5b0
[   23.593933][  T295]  ? drop_nlink+0xc1/0x110
[   23.598223][  T295]  ? handle_bug+0x41/0x70
[   23.602383][  T295]  ? exc_invalid_op+0x1b/0x50
[   23.606938][  T295]  ? asm_exc_invalid_op+0x1b/0x20
[   23.611773][  T295]  ? drop_nlink+0x44/0x110
[   23.616219][  T295]  ? drop_nlink+0xc1/0x110
[   23.620788][  T295]  ? drop_nlink+0xc1/0x110
[   23.625088][  T295]  ? drop_nlink+0xc1/0x110
[   23.629288][  T295]  shmem_rmdir+0x59/0x90
[   23.633420][  T295]  vfs_rmdir+0x324/0x470
[   23.637449][  T295]  incfs_kill_sb+0x113/0x230
[   23.641880][  T295]  deactivate_locked_super+0xad/0x110
[   23.647125][  T295]  deactivate_super+0xbe/0xf0
[   23.651619][  T295]  cleanup_mnt+0x45c/0x510
[   23.655890][  T295]  __cleanup_mnt+0x19/0x20
[   23.660129][  T295]  task_work_run+0x129/0x190
[   23.664555][  T295]  ptrace_notify+0x29e/0x350
[   23.668952][  T295]  ? do_notify_parent+0xa30/0xa30
[   23.673863][  T295]  ? user_path_at_empty+0x14e/0x1a0
[   23.678870][  T295]  ? __x64_sys_umount+0x122/0x170
[   23.683861][  T295]  ? path_umount+0xea0/0xea0
[   23.688345][  T295]  syscall_exit_to_user_mode+0xa3/0x160
[   23.693836][  T295]  do_syscall_64+0x47/0xb0
[   23.698058][  T295]  ? clear_bhb_loop+0x35/0x90
[   23.702567][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   23.708329][  T295] RIP: 0033:0x7f75b4903a47
[   23.712550][  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
[   23.732262][  T295] RSP: 002b:00007fff59e1a298 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.740465][  T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f75b4903a47
[   23.748280][  T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff59e1a350
[   23.756096][  T295] RBP: 00007fff59e1a350 R08: 0000000000000000 R09: 0000000000000000
[   23.763917][  T295] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff59e1b3c0
[   23.771690][  T295] R13: 00005555795966c0 R14: 00007fff59e1b3c0 R15: 0000000000000001
[   23.779561][  T295]  </TASK>
[   23.782363][  T295] ---[ end trace e15da8f82a8d3793 ]---
[   23.787847][  T295] ==================================================================
[   23.795771][  T295] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   23.801842][  T295] Write of size 4 at addr 0000000000000170 by task syz-executor694/295
[   23.809917][  T295] 
[   23.812086][  T295] CPU: 0 PID: 295 Comm: syz-executor694 Tainted: G        W         5.15.175-syzkaller-00803-g19092c8155b4 #0
[   23.823782][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   23.833645][  T295] Call Trace:
[   23.836770][  T295]  <TASK>
[   23.839546][  T295]  dump_stack_lvl+0x151/0x1c0
[   23.844093][  T295]  ? io_uring_drop_tctx_refs+0x190/0x190
[   23.849523][  T295]  ? _raw_spin_lock+0xa4/0x1b0
[   23.854126][  T295]  ? _raw_spin_trylock_bh+0x190/0x190
[   23.859445][  T295]  kasan_report+0x16f/0x1c0
[   23.863786][  T295]  ? ihold+0x20/0x60
[   23.867515][  T295]  ? ihold+0x20/0x60
[   23.871248][  T295]  kasan_check_range+0x293/0x2a0
[   23.876128][  T295]  __kasan_check_write+0x14/0x20
[   23.881077][  T295]  ihold+0x20/0x60
[   23.884730][  T295]  vfs_rmdir+0x201/0x470
[   23.888801][  T295]  incfs_kill_sb+0x113/0x230
[   23.893229][  T295]  deactivate_locked_super+0xad/0x110
[   23.898458][  T295]  deactivate_super+0xbe/0xf0
[   23.903067][  T295]  cleanup_mnt+0x45c/0x510
[   23.907631][  T295]  __cleanup_mnt+0x19/0x20
[   23.911963][  T295]  task_work_run+0x129/0x190
[   23.916391][  T295]  ptrace_notify+0x29e/0x350
[   23.920824][  T295]  ? do_notify_parent+0xa30/0xa30
[   23.925695][  T295]  ? user_path_at_empty+0x14e/0x1a0
[   23.930715][  T295]  ? __x64_sys_umount+0x122/0x170
[   23.935572][  T295]  ? path_umount+0xea0/0xea0
[   23.939998][  T295]  syscall_exit_to_user_mode+0xa3/0x160
[   23.945384][  T295]  do_syscall_64+0x47/0xb0
[   23.949631][  T295]  ? clear_bhb_loop+0x35/0x90
[   23.954150][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   23.959999][  T295] RIP: 0033:0x7f75b4903a47
[   23.964252][  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
[   23.983663][  T295] RSP: 002b:00007fff59e1a298 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   23.992124][  T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f75b4903a47
[   24.000011][  T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff59e1a350
[   24.007827][  T295] RBP: 00007fff59e1a350 R08: 0000000000000000 R09: 0000000000000000
[   24.015640][  T295] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff59e1b3c0
[   24.023545][  T295] R13: 00005555795966c0 R14: 00007fff59e1b3c0 R15: 0000000000000001
[   24.031381][  T295]  </TASK>
[   24.034295][  T295] ==================================================================
[   24.042585][  T295] Disabling lock debugging due to kernel taint
[   24.048693][  T295] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   24.056330][  T295] #PF: supervisor write access in kernel mode
[   24.062299][  T295] #PF: error_code(0x0002) - not-present page
[   24.068202][  T295] PGD 0 P4D 0 
[   24.071521][  T295] Oops: 0002 [#1] PREEMPT SMP KASAN
[   24.076732][  T295] CPU: 0 PID: 295 Comm: syz-executor694 Tainted: G    B   W         5.15.175-syzkaller-00803-g19092c8155b4 #0
[   24.088189][  T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   24.098187][  T295] RIP: 0010:ihold+0x25/0x60
[   24.102533][  T295] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 21 91 ae ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 80 ec 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 a4 94 ae
[   24.122328][  T295] RSP: 0018:ffffc90000a27c08 EFLAGS: 00010246
[   24.128310][  T295] RAX: ffff888123c7bb00 RBX: 0000000000000001 RCX: ffff888123c7bb40
[   24.136211][  T295] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   24.144020][  T295] RBP: ffffc90000a27c18 R08: ffffffff8141a99b R09: 0000000000000003
[   24.151831][  T295] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   24.159644][  T295] R13: ffff8881215c0330 R14: 0000000000000000 R15: 1ffff110242b806c
[   24.167577][  T295] FS:  0000555579595380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   24.176503][  T295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.182926][  T295] CR2: 0000000000000170 CR3: 0000000126061000 CR4: 00000000003506b0
[   24.190746][  T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.198561][  T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.206363][  T295] Call Trace:
[   24.209512][  T295]  <TASK>
[   24.212273][  T295]  ? __die_body+0x62/0xb0
[   24.216427][  T295]  ? __die+0x7e/0x90
[   24.220194][  T295]  ? page_fault_oops+0x7f9/0xa90
[   24.224937][  T295]  ? __kasan_check_write+0x14/0x20
[   24.229884][  T295]  ? kernelmode_fixup_or_oops+0xd0/0xd0
[   24.235265][  T295]  ? __schedule+0xcd4/0x1590
[   24.239808][  T295]  ? exc_page_fault+0x510/0x7f0
[   24.244495][  T295]  ? asm_exc_page_fault+0x27/0x30
[   24.249353][  T295]  ? check_panic_on_warn+0x5b/0xb0
[   24.254321][  T295]  ? ihold+0x25/0x60
[   24.258127][  T295]  ? ihold+0x20/0x60
[   24.261934][  T295]  vfs_rmdir+0x201/0x470
[   24.266105][  T295]  incfs_kill_sb+0x113/0x230
[   24.270530][  T295]  deactivate_locked_super+0xad/0x110
[   24.275737][  T295]  deactivate_super+0xbe/0xf0
[   24.280256][  T295]  cleanup_mnt+0x45c/0x510
[   24.284502][  T295]  __cleanup_mnt+0x19/0x20
[   24.288760][  T295]  task_work_run+0x129/0x190
[   24.293197][  T295]  ptrace_notify+0x29e/0x350
[   24.297701][  T295]  ? do_notify_parent+0xa30/0xa30
[   24.302556][  T295]  ? user_path_at_empty+0x14e/0x1a0
[   24.307587][  T295]  ? __x64_sys_umount+0x122/0x170
[   24.312453][  T295]  ? path_umount+0xea0/0xea0
[   24.316962][  T295]  syscall_exit_to_user_mode+0xa3/0x160
[   24.322515][  T295]  do_syscall_64+0x47/0xb0
[   24.326768][  T295]  ? clear_bhb_loop+0x35/0x90
[   24.331284][  T295]  entry_SYSCALL_64_after_hwframe+0x66/0xd0
[   24.337018][  T295] RIP: 0033:0x7f75b4903a47
[   24.341264][  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
[   24.360705][  T295] RSP: 002b:00007fff59e1a298 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   24.368948][  T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f75b4903a47
[   24.376761][  T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff59e1a350
[   24.384582][  T295] RBP: 00007fff59e1a350 R08: 0000000000000000 R09: 0000000000000000
[   24.392384][  T295] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff59e1b3c0
[   24.400197][  T295] R13: 00005555795966c0 R14: 00007fff59e1b3c0 R15: 0000000000000001
[   24.408097][  T295]  </TASK>
[   24.410955][  T295] Modules linked in:
[   24.414706][  T295] CR2: 0000000000000170
[   24.418692][  T295] ---[ end trace e15da8f82a8d3794 ]---
[   24.423977][  T295] RIP: 0010:ihold+0x25/0x60
[   24.428324][  T295] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 21 91 ae ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 80 ec 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 a4 94 ae
[   24.447758][  T295] RSP: 0018:ffffc90000a27c08 EFLAGS: 00010246
[   24.453785][  T295] RAX: ffff888123c7bb00 RBX: 0000000000000001 RCX: ffff888123c7bb40
[   24.461594][  T295] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   24.469381][  T295] RBP: ffffc90000a27c18 R08: ffffffff8141a99b R09: 0000000000000003
[   24.477348][  T295] R10: fffffbfff0e9a84c R11: dffffc0000000001 R12: dffffc0000000000
[   24.485096][  T295] R13: ffff8881215c0330 R14: 0000000000000000 R15: 1ffff110242b806c
[   24.492905][  T295] FS:  0000555579595380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
[   24.501667][  T295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.508523][  T295] CR2: 0000000000000170 CR3: 0000000126061000 CR4: 00000000003506b0
[   24.516341][  T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.524281][  T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.532116][  T295] Kernel panic - not syncing: Fatal exception
[   24.538243][  T295] Kernel Offset: disabled
[   24.542379][  T295] Rebooting in 86400 seconds..