./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor829404664

<...>
Warning: Permanently added '10.128.0.193' (ED25519) to the list of known hosts.
execve("./syz-executor829404664", ["./syz-executor829404664"], 0x7ffd01121e40 /* 10 vars */) = 0
brk(NULL)                               = 0x555588d49000
brk(0x555588d49e00)                     = 0x555588d49e00
arch_prctl(ARCH_SET_FS, 0x555588d49480) = 0
set_tid_address(0x555588d49750)         = 290
set_robust_list(0x555588d49760, 24)     = 0
rseq(0x555588d49da0, 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-executor829404664", 4096) = 27
getrandom("\xf6\x78\x66\x0f\xf1\x61\x41\x23", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555588d49e00
brk(0x555588d6ae00)                     = 0x555588d6ae00
brk(0x555588d6b000)                     = 0x555588d6b000
mprotect(0x7f320c141000, 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
rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x7f320c097da0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f320c09fa30}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f320c097da0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f320c09fa30}, NULL, 8) = 0
mkdir("./syzkaller.fCwRGd", 0700)       = 0
chmod("./syzkaller.fCwRGd", 0777)       = 0
chdir("./syzkaller.fCwRGd")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555588d49750) = 292
./strace-static-x86_64: Process 292 attached
[pid   292] set_robust_list(0x555588d49760, 24) = 0
[pid   292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   292] getppid()                   = 0
[pid   292] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   292] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   292] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   292] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   292] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   292] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   292] unshare(CLONE_NEWNS)        = 0
[pid   292] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   292] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   292] unshare(CLONE_NEWCGROUP)    = 0
[pid   292] unshare(CLONE_NEWUTS)       = 0
[pid   292] unshare(CLONE_SYSVSEM)      = 0
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   292] getpid()                    = 1
[pid   292] 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   292] 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   292] unshare(CLONE_NEWNET)       = 0
[pid   292] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   292] write(3, "0 65535", 7)      = 7
[pid   292] close(3)                    = 0
[pid   292] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   292] write(3, "100000", 6)       = 6
[pid   292] close(3)                    = 0
[pid   292] mkdir("./syz-tmp", 0777)    = 0
[pid   292] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   292] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   292] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   292] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   292] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   292] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   292] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   292] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   292] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   292] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   292] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   292] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   292] 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   292] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   292] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   292] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   292] chdir("/")                  = 0
[pid   292] umount2("./pivot", MNT_DETACH) = 0
[pid   292] chroot("./newroot")         = 0
[pid   292] chdir("/")                  = 0
[   24.762940][   T24] audit: type=1400 audit(1737363720.549:66): avc:  denied  { execmem } for  pid=290 comm="syz-executor829" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   24.782835][   T24] audit: type=1400 audit(1737363720.549:67): avc:  denied  { mounton } for  pid=292 comm="syz-executor829" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   292] mkdir("/dev/gadgetfs", 0777) = 0
[pid   292] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   292] mkdir("/dev/binderfs", 0777) = 0
[pid   292] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   292] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   292] mkdir("./0", 0777)          = 0
[pid   292] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid   292] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid   292] close(3executing program
)                    = 0
[pid   292] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555588d49750) = 2
./strace-static-x86_64: Process 294 attached
[pid   294] set_robust_list(0x555588d49760, 24) = 0
[pid   294] chdir("./0")                = 0
[pid   294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   294] setpgid(0, 0)               = 0
[pid   294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   294] write(3, "1000", 4)         = 4
[pid   294] close(3)                    = 0
[pid   294] symlink("/dev/binderfs", "./binderfs") = 0
[pid   294] write(1, "executing program\n", 18) = 18
[pid   294] mkdir("./file0", 0777)      = 0
[pid   294] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
[pid   294] mount(".", "./file0/../file0", NULL, MS_SYNCHRONOUS|MS_DIRSYNC|MS_BIND|MS_SHARED, NULL) = 0
[pid   294] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0
[pid   294] close(3)                    = -1 EBADF (Bad file descriptor)
[   24.804914][   T24] audit: type=1400 audit(1737363720.569:68): avc:  denied  { mounton } for  pid=292 comm="syz-executor829" path="/root/syzkaller.fCwRGd/syz-tmp" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   24.806221][  T292] request_module fs-gadgetfs succeeded, but still no fs?
[   24.829327][   T24] audit: type=1400 audit(1737363720.569:69): avc:  denied  { mount } for  pid=292 comm="syz-executor829" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   24.848845][  T294] incfs: ino conflict with backing FS 8
[pid   294] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   294] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   294] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   294] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   294] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   294] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   294] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   294] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   294] exit_group(0)               = ?
[pid   294] +++ exited with 0 +++
[pid   292] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2} ---
[pid   292] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid   292] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   292] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   292] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=120, ...}, AT_EMPTY_PATH) = 0
[pid   292] getdents64(3, 0x555588d4a7f0 /* 6 entries */, 32768) = 176
[pid   292] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   292] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   292] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   292] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   292] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   292] getdents64(4, 0x555588d52830 /* 2 entries */, 32768) = 48
[pid   292] getdents64(4, 0x555588d52830 /* 0 entries */, 32768) = 0
[pid   292] close(4)                    = 0
[pid   292] rmdir("./0/.incomplete")    = 0
[pid   292] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   292] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   292] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   292] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   292] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_EMPTY_PATH) = 0
[pid   292] getdents64(4, 0x555588d52830 /* 2 entries */, 32768) = 48
[pid   292] getdents64(4, 0x555588d52830 /* 0 entries */, 32768) = 0
[pid   292] close(4)                    = 0
[pid   292] rmdir("./0/.index")         = 0
[   24.862630][   T24] audit: type=1400 audit(1737363720.569:70): avc:  denied  { mounton } for  pid=292 comm="syz-executor829" path="/root/syzkaller.fCwRGd/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
[   24.888760][  T292] ------------[ cut here ]------------
[   24.889055][   T24] audit: type=1400 audit(1737363720.569:71): avc:  denied  { mount } for  pid=292 comm="syz-executor829" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   24.894175][  T292] WARNING: CPU: 0 PID: 292 at fs/inode.c:304 drop_nlink+0xc1/0x110
[   24.915991][   T24] audit: type=1400 audit(1737363720.569:72): avc:  denied  { mounton } for  pid=292 comm="syz-executor829" path="/root/syzkaller.fCwRGd/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
[   24.923694][  T292] Modules linked in:
[   24.950046][   T24] audit: type=1400 audit(1737363720.569:73): avc:  denied  { mounton } for  pid=292 comm="syz-executor829" path="/root/syzkaller.fCwRGd/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=13044 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   24.981097][   T24] audit: type=1400 audit(1737363720.569:74): avc:  denied  { unmount } for  pid=292 comm="syz-executor829" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   24.981454][  T292] 
[   25.000514][   T24] audit: type=1400 audit(1737363720.589:75): avc:  denied  { mounton } for  pid=292 comm="syz-executor829" path="/dev/gadgetfs" dev="devtmpfs" ino=509 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   25.002871][  T292] CPU: 0 PID: 292 Comm: syz-executor829 Not tainted 5.10.233-syzkaller-00881-gfbe98d68b6b3 #0
[   25.035393][  T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   25.045290][  T292] RIP: 0010:drop_nlink+0xc1/0x110
[   25.050116][  T292] Code: 1e 48 8d bb b8 04 00 00 be 08 00 00 00 e8 77 cb f0 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 8f 2a b3 ff <0f> 0b eb 88 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 4c
[   25.069563][  T292] RSP: 0018:ffffc90000b57be8 EFLAGS: 00010293
[   25.075474][  T292] RAX: ffffffff81b79411 RBX: 0000000000000000 RCX: ffff88810c060000
[   25.083282][  T292] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   25.091099][  T292] RBP: ffffc90000b57c10 R08: ffffffff81b79394 R09: 0000000000000003
[   25.098864][  T292] R10: fffff5200016af6c R11: dffffc0000000001 R12: dffffc0000000000
[   25.106707][  T292] R13: 1ffff1102173fd11 R14: ffff88810b9fe840 R15: ffff88810b9fe888
[   25.114514][  T292] FS:  0000555588d49480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.123284][  T292] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.129677][  T292] CR2: 00005592e42091e0 CR3: 000000011c459000 CR4: 00000000003506a0
[   25.137747][  T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.145522][  T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.153443][  T292] Call Trace:
[   25.156515][  T292]  ? show_regs+0x58/0x60
[   25.160631][  T292]  ? __warn+0x160/0x2f0
[   25.164582][  T292]  ? drop_nlink+0xc1/0x110
[   25.168836][  T292]  ? report_bug+0x3d9/0x5b0
[   25.173221][  T292]  ? drop_nlink+0xc1/0x110
[   25.177428][  T292]  ? handle_bug+0x41/0x70
[   25.181654][  T292]  ? exc_invalid_op+0x1b/0x50
[   25.186106][  T292]  ? asm_exc_invalid_op+0x12/0x20
[   25.191001][  T292]  ? drop_nlink+0x44/0x110
[   25.195219][  T292]  ? drop_nlink+0xc1/0x110
[   25.199472][  T292]  ? drop_nlink+0xc1/0x110
[   25.203891][  T292]  ? drop_nlink+0xc1/0x110
[   25.208081][  T292]  shmem_rmdir+0x59/0x90
[   25.212220][  T292]  vfs_rmdir+0x2b7/0x3f0
[   25.216247][  T292]  incfs_kill_sb+0x108/0x220
[   25.220703][  T292]  deactivate_locked_super+0xad/0x110
[   25.225874][  T292]  deactivate_super+0xbe/0xf0
[   25.230426][  T292]  cleanup_mnt+0x45c/0x510
[   25.234637][  T292]  __cleanup_mnt+0x19/0x20
[   25.238886][  T292]  task_work_run+0x129/0x190
[   25.243347][  T292]  ptrace_notify+0x29e/0x350
[   25.247744][  T292]  ? do_notify_parent+0xa10/0xa10
[   25.252630][  T292]  ? user_path_at_empty+0x40/0x50
[   25.257461][  T292]  ? __x64_sys_umount+0x122/0x170
[   25.262347][  T292]  ? path_umount+0xea0/0xea0
[   25.266752][  T292]  syscall_exit_to_user_mode+0xf5/0x1a0
[   25.272157][  T292]  do_syscall_64+0x40/0x70
[   25.276666][  T292]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.282394][  T292] RIP: 0033:0x7f320c0ce147
[   25.286622][  T292] 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
[   25.306251][  T292] RSP: 002b:00007fff90637298 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.315039][  T292] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f320c0ce147
[   25.323011][  T292] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff90637350
[   25.330954][  T292] RBP: 00007fff90637350 R08: 0000000000000000 R09: 0000000000000000
[   25.338752][  T292] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff906383c0
[   25.346597][  T292] R13: 0000555588d4a7c0 R14: 431bde82d7b634db R15: 00007fff906383e0
[   25.354384][  T292] ---[ end trace 06196aa8308c8188 ]---
[   25.359692][  T292] ==================================================================
[   25.367564][  T292] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   25.373651][  T292] Write of size 4 at addr 0000000000000170 by task syz-executor829/292
[   25.381809][  T292] 
[   25.383991][  T292] CPU: 1 PID: 292 Comm: syz-executor829 Tainted: G        W         5.10.233-syzkaller-00881-gfbe98d68b6b3 #0
[   25.395455][  T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   25.405331][  T292] Call Trace:
[   25.408466][  T292]  dump_stack_lvl+0x1e2/0x24b
[   25.412980][  T292]  ? panic+0x812/0x812
[   25.416878][  T292]  ? bfq_pos_tree_add_move+0x43b/0x43b
[   25.422177][  T292]  ? _raw_spin_lock+0xa4/0x1b0
[   25.426773][  T292]  ? _raw_spin_trylock_bh+0x190/0x190
[   25.431982][  T292]  kasan_report+0x167/0x1c0
[   25.436320][  T292]  ? ihold+0x20/0x60
[   25.440055][  T292]  ? ihold+0x20/0x60
[   25.443790][  T292]  kasan_check_range+0x293/0x2a0
[   25.448558][  T292]  __kasan_check_write+0x14/0x20
[   25.453358][  T292]  ihold+0x20/0x60
[   25.456888][  T292]  vfs_rmdir+0x200/0x3f0
[   25.460968][  T292]  incfs_kill_sb+0x108/0x220
[   25.465397][  T292]  deactivate_locked_super+0xad/0x110
[   25.470604][  T292]  deactivate_super+0xbe/0xf0
[   25.475115][  T292]  cleanup_mnt+0x45c/0x510
[   25.479369][  T292]  __cleanup_mnt+0x19/0x20
[   25.483621][  T292]  task_work_run+0x129/0x190
[   25.488049][  T292]  ptrace_notify+0x29e/0x350
[   25.492474][  T292]  ? do_notify_parent+0xa10/0xa10
[   25.497335][  T292]  ? user_path_at_empty+0x40/0x50
[   25.502196][  T292]  ? __x64_sys_umount+0x122/0x170
[   25.507054][  T292]  ? path_umount+0xea0/0xea0
[   25.511485][  T292]  syscall_exit_to_user_mode+0xf5/0x1a0
[   25.516867][  T292]  do_syscall_64+0x40/0x70
[   25.521116][  T292]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.526943][  T292] RIP: 0033:0x7f320c0ce147
[   25.531186][  T292] 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
[   25.550631][  T292] RSP: 002b:00007fff90637298 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.558869][  T292] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f320c0ce147
[   25.566680][  T292] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff90637350
[   25.574499][  T292] RBP: 00007fff90637350 R08: 0000000000000000 R09: 0000000000000000
[   25.582308][  T292] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff906383c0
[   25.590114][  T292] R13: 0000555588d4a7c0 R14: 431bde82d7b634db R15: 00007fff906383e0
[   25.597926][  T292] ==================================================================
[   25.605822][  T292] Disabling lock debugging due to kernel taint
[   25.611967][  T292] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   25.619569][  T292] #PF: supervisor write access in kernel mode
[   25.625472][  T292] #PF: error_code(0x0002) - not-present page
[   25.631412][  T292] PGD 0 P4D 0 
[   25.634628][  T292] Oops: 0002 [#1] PREEMPT SMP KASAN
[   25.639663][  T292] CPU: 1 PID: 292 Comm: syz-executor829 Tainted: G    B   W         5.10.233-syzkaller-00881-gfbe98d68b6b3 #0
[   25.651109][  T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   25.661018][  T292] RIP: 0010:ihold+0x25/0x60
[   25.665343][  T292] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 a1 22 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 60 c3 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 24 26 b3
[   25.684786][  T292] RSP: 0018:ffffc90000b57c28 EFLAGS: 00010246
[   25.690690][  T292] RAX: ffff88810c060000 RBX: 0000000000000001 RCX: ffff88810c060000
[   25.698508][  T292] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   25.706306][  T292] RBP: ffffc90000b57c38 R08: ffffffff813e2b7b R09: 0000000000000003
[   25.714124][  T292] R10: fffffbfff0e11248 R11: dffffc0000000001 R12: dffffc0000000000
[   25.721932][  T292] R13: ffff888120cf3110 R14: 0000000000000000 R15: 0000000000000000
[   25.729751][  T292] FS:  0000555588d49480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.738510][  T292] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.744929][  T292] CR2: 0000000000000170 CR3: 000000011c459000 CR4: 00000000003506a0
[   25.752744][  T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.760552][  T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.768798][  T292] Call Trace:
[   25.771931][  T292]  ? __die_body+0x62/0xb0
[   25.776090][  T292]  ? __die+0x7e/0x90
[   25.779822][  T292]  ? no_context+0x9f9/0xd20
[   25.784163][  T292]  ? is_prefetch+0x5c0/0x5c0
[   25.788588][  T292]  ? preempt_schedule+0xd9/0xe0
[   25.793276][  T292]  ? __kasan_check_read+0x11/0x20
[   25.798136][  T292]  ? preempt_schedule_common+0xbe/0xf0
[   25.803428][  T292]  ? preempt_schedule+0xd9/0xe0
[   25.808116][  T292]  ? schedule_preempt_disabled+0x20/0x20
[   25.813587][  T292]  ? sysvec_apic_timer_interrupt+0xcb/0xe0
[   25.819227][  T292]  ? __bad_area_nosemaphore+0xc4/0x430
[   25.824523][  T292]  ? bad_area_nosemaphore+0x2d/0x40
[   25.829555][  T292]  ? exc_page_fault+0x3df/0x5b0
[   25.834242][  T292]  ? asm_exc_page_fault+0x1e/0x30
[   25.839101][  T292]  ? check_panic_on_warn+0x5b/0xb0
[   25.844050][  T292]  ? ihold+0x25/0x60
[   25.847784][  T292]  ? ihold+0x20/0x60
[   25.851516][  T292]  vfs_rmdir+0x200/0x3f0
[   25.855592][  T292]  incfs_kill_sb+0x108/0x220
[   25.860021][  T292]  deactivate_locked_super+0xad/0x110
[   25.865227][  T292]  deactivate_super+0xbe/0xf0
[   25.869741][  T292]  cleanup_mnt+0x45c/0x510
[   25.873997][  T292]  __cleanup_mnt+0x19/0x20
[   25.878248][  T292]  task_work_run+0x129/0x190
[   25.882678][  T292]  ptrace_notify+0x29e/0x350
[   25.887103][  T292]  ? do_notify_parent+0xa10/0xa10
[   25.891962][  T292]  ? user_path_at_empty+0x40/0x50
[   25.896906][  T292]  ? __x64_sys_umount+0x122/0x170
[   25.901767][  T292]  ? path_umount+0xea0/0xea0
[   25.906194][  T292]  syscall_exit_to_user_mode+0xf5/0x1a0
[   25.911573][  T292]  do_syscall_64+0x40/0x70
[   25.915827][  T292]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.921555][  T292] RIP: 0033:0x7f320c0ce147
[   25.925808][  T292] 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
[   25.945246][  T292] RSP: 002b:00007fff90637298 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
[   25.953500][  T292] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f320c0ce147
[   25.961304][  T292] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff90637350
[   25.969113][  T292] RBP: 00007fff90637350 R08: 0000000000000000 R09: 0000000000000000
[   25.976924][  T292] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff906383c0
[   25.984754][  T292] R13: 0000555588d4a7c0 R14: 431bde82d7b634db R15: 00007fff906383e0
[   25.992548][  T292] Modules linked in:
[   25.996290][  T292] CR2: 0000000000000170
[   26.000284][  T292] ---[ end trace 06196aa8308c8189 ]---
[   26.005581][  T292] RIP: 0010:ihold+0x25/0x60
[   26.009912][  T292] Code: 00 00 00 00 00 55 48 89 e5 41 56 53 49 89 fe e8 a1 22 b3 ff 49 8d be 70 01 00 00 be 04 00 00 00 e8 60 c3 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 24 26 b3
[   26.029350][  T292] RSP: 0018:ffffc90000b57c28 EFLAGS: 00010246
[   26.035250][  T292] RAX: ffff88810c060000 RBX: 0000000000000001 RCX: ffff88810c060000
[   26.043070][  T292] RDX: 0000000000000000 RSI: 0000000000000282 RDI: 00000000ffffffff
[   26.050872][  T292] RBP: ffffc90000b57c38 R08: ffffffff813e2b7b R09: 0000000000000003
[   26.058683][  T292] R10: fffffbfff0e11248 R11: dffffc0000000001 R12: dffffc0000000000
[   26.066503][  T292] R13: ffff888120cf3110 R14: 0000000000000000 R15: 0000000000000000
[   26.074309][  T292] FS:  0000555588d49480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   26.083074][  T292] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.089493][  T292] CR2: 0000000000000170 CR3: 000000011c459000 CR4: 00000000003506a0
[   26.097310][  T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.105119][  T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   26.112930][  T292] Kernel panic - not syncing: Fatal exception
[   26.119042][  T292] Kernel Offset: disabled
[   26.123165][  T292] Rebooting in 86400 seconds..