ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor2815655205

<...>
[    6.215629][   T24] audit: type=1400 audit(1786002035.880:58): avc:  denied  { read } for  pid=187 comm="getty" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:getty_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1

syzkaller
syzkaller login: [   14.788627][   T24] audit: type=1400 audit(1786002044.470:59): avc:  denied  { transition } for  pid=217 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.796859][   T24] audit: type=1400 audit(1786002044.470:60): avc:  denied  { noatsecure } for  pid=217 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.803812][   T24] audit: type=1400 audit(1786002044.470:61): avc:  denied  { write } for  pid=217 comm="sh" path="pipe:[14025]" dev="pipefs" ino=14025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1
[   14.816676][   T24] audit: type=1400 audit(1786002044.470:62): avc:  denied  { rlimitinh } for  pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   14.835692][   T24] audit: type=1400 audit(1786002044.470:63): avc:  denied  { siginh } for  pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
Warning: Permanently added '10.128.1.175' (ED25519) to the list of known hosts.
execve("ci2-android-5-10/syz-executor2815655205", ["ci2-android-5-10/syz-executor2815655205"], 0x7ffd21a1efc0 /* 10 vars */) = 0
brk(NULL)                               = 0x555563051000
brk(0x555563051e00)                     = 0x555563051e00
arch_prctl(ARCH_SET_FS, 0x555563051480) = 0
set_tid_address(0x555563051750)         = 297
set_robust_list(0x555563051760, 24)     = 0
rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented)
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-5-10/syz-executor2815655205", 4096) = 45
getrandom("\xc7\x3e\x98\x7e\x77\xf1\x24\x20", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x555563051e00
brk(0x555563072e00)                     = 0x555563072e00
brk(0x555563073000)                     = 0x555563073000
mprotect(0x7f486daa8000, 20480, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
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=0x7f486d9ffeb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f486da03550}, NULL, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x7f486d9ffeb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f486da03550}, NULL, 8) = 0
getrandom("\x8a\x0e\x70\x35\x6b\x1e\xf0\x91", 8, GRND_NONBLOCK) = 8
mkdir("./syzkaller.w6gi7V", 0700)       = 0
chmod("./syzkaller.w6gi7V", 0777)       = 0
chdir("./syzkaller.w6gi7V")             = 0
unshare(CLONE_NEWPID)                   = 0
rt_sigprocmask(SIG_BLOCK, ~[], [], 8)   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555563051750) = 298
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-10/strace-static-x86_64: Process 298 attached
[pid   298] set_robust_list(0x555563051760, 24) = 0
[pid   298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   298] getppid()                   = 0
[pid   298] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid   298] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid   298] unshare(CLONE_NEWNS)        = 0
[pid   298] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] unshare(CLONE_NEWIPC)       = -1 EINVAL (Invalid argument)
[pid   298] unshare(CLONE_NEWCGROUP)    = 0
[pid   298] unshare(CLONE_NEWUTS)       = 0
[pid   298] unshare(CLONE_SYSVSEM)      = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
[pid   298] getpid()                    = 1
[pid   298] 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   298] 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   298] unshare(CLONE_NEWNET)       = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "0 65535", 7)      = 7
[pid   298] close(3)                    = 0
[pid   298] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid   298] write(3, "100000", 6)       = 6
[pid   298] close(3)                    = 0
[pid   298] mkdir("./syz-tmp", 0777)    = 0
[pid   298] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot", 0777) = 0
[pid   298] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid   298] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid   298] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid   298] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   298] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid   298] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] 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   298] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid   298] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid   298] mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, MS_RDONLY|MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid   298] mkdir("./syz-tmp/pivot", 0777) = 0
[pid   298] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid   298] chdir("/")                  = 0
[   24.306466][   T24] audit: type=1400 audit(1786002053.990:64): avc:  denied  { execmem } for  pid=297 comm="syz-executor281" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1
[   24.325990][   T24] audit: type=1400 audit(1786002053.990:65): avc:  denied  { mounton } for  pid=298 comm="syz-executor281" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1
[pid   298] umount2("./pivot", MNT_DETACH) = 0
[pid   298] chroot("./newroot")         = 0
[pid   298] chdir("/")                  = 0
[pid   298] mkdir("/dev/gadgetfs", 0777) = 0
[pid   298] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = -1 ENODEV (No such device)
[pid   298] mkdir("/dev/binderfs", 0777) = 0
[pid   298] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid   298] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid   298] mkdir("./0", 0777)          = 0
[pid   298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid   298] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[   24.348997][   T24] audit: type=1400 audit(1786002054.040:66): avc:  denied  { mounton } for  pid=298 comm="syz-executor281" path="/root/syzkaller.w6gi7V/syz-tmp" dev="sda1" ino=2026 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1
[   24.373698][   T24] audit: type=1400 audit(1786002054.040:67): avc:  denied  { mount } for  pid=298 comm="syz-executor281" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1
[   24.375443][  T298] request_module fs-gadgetfs succeeded, but still no fs?
[pid   298] close(3)                    = 0
[pid   298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid   298] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555563051750) = 2
[pid   298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
ci2-android-5-10/strace-static-x86_64: Process 300 attached
[pid   300] set_robust_list(0x555563051760, 24) = 0
[pid   300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid   300] chdir("./0")                = 0
[pid   300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   300] setpgid(0, 0)               = 0
[pid   300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   300] write(3, "1000", 4)         = 4
[pid   300] close(3)                    = 0
[pid   300] symlink("/dev/binderfs", "./binderfs") = 0
[pid   300] write(1, "executing program\n", 18) = 18
[pid   300] mkdir("./bus", 0777)        = 0
[pid   300] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} ---
executing program
[pid   300] mount(".", "./bus", "incremental-fs", MS_NOSUID|MS_REC|MS_SILENT, NULL) = 0
[pid   300] close(3)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(4)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(5)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(6)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(7)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(8)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(9)                    = -1 EBADF (Bad file descriptor)
[pid   300] close(10)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(11)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(12)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(13)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(14)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(15)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(16)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(17)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(18)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(19)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(20)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(21)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(22)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(23)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(24)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(25)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(26)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(27)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(28)                   = -1 EBADF (Bad file descriptor)
[pid   300] close(29)                   = -1 EBADF (Bad file descriptor)
[pid   300] exit_group(0)               = ?
[pid   300] +++ exited with 0 +++
[pid   298] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
[pid   298] restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0
[pid   298] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid   298] fstat(3, {st_mode=S_IFDIR|0700, st_size=120, ...}) = 0
[pid   298] getdents64(3, 0x555563052810 /* 6 entries */, 32768) = 168
[pid   298] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] newfstatat(AT_FDCWD, "./0/.incomplete", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   298] umount2("./0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   298] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   298] getdents64(4, 0x55556305a850 /* 2 entries */, 32768) = 48
[pid   298] getdents64(4, 0x55556305a850 /* 0 entries */, 32768) = 0
[pid   298] close(4)                    = 0
[pid   298] rmdir("./0/.incomplete")    = 0
[pid   298] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] newfstatat(AT_FDCWD, "./0/.index", {st_mode=S_IFDIR|0700, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid   298] umount2("./0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid   298] openat(AT_FDCWD, "./0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid   298] fstat(4, {st_mode=S_IFDIR|0700, st_size=40, ...}) = 0
[pid   298] getdents64(4, 0x55556305a850 /* 2 entries */, 32768) = 48
[pid   298] getdents64(4, 0x55556305a850 /* 0 entries */, 32768) = 0
[pid   298] close(4)                    = 0
[pid   298] rmdir("./0/.index")         = 0
[   24.396185][   T24] audit: type=1400 audit(1786002054.040:68): avc:  denied  { mounton } for  pid=298 comm="syz-executor281" path="/root/syzkaller.w6gi7V/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
[   24.415175][  T300] incfs: ino conflict with backing FS 9
[   24.433394][   T24] audit: type=1400 audit(1786002054.040:69): avc:  denied  { mount } for  pid=298 comm="syz-executor281" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1
[   24.456469][  T298] ------------[ cut here ]------------
[   24.456796][   T24] audit: type=1400 audit(1786002054.040:70): avc:  denied  { mounton } for  pid=298 comm="syz-executor281" path="/root/syzkaller.w6gi7V/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
[   24.461976][  T298] WARNING: CPU: 1 PID: 298 at fs/inode.c:304 drop_nlink+0xc5/0x110
[   24.488778][   T24] audit: type=1400 audit(1786002054.040:71): avc:  denied  { mounton } for  pid=298 comm="syz-executor281" path="/root/syzkaller.w6gi7V/syz-tmp/newroot/proc/sys/fs/binfmt_misc" dev="proc" ino=14189 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:sysctl_fs_t tclass=dir permissive=1
[   24.496648][  T298] Modules linked in:
[   24.524216][   T24] audit: type=1400 audit(1786002054.040:72): avc:  denied  { unmount } for  pid=298 comm="syz-executor281" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1
[   24.524280][  T298] 
[   24.528135][   T24] audit: type=1400 audit(1786002054.060:73): avc:  denied  { mounton } for  pid=298 comm="syz-executor281" path="/dev/gadgetfs" dev="devtmpfs" ino=517 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1
[   24.547774][  T298] CPU: 1 PID: 298 Comm: syz-executor281 Not tainted syzkaller #0
[   24.580722][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   24.590807][  T298] RIP: 0010:drop_nlink+0xc5/0x110
[   24.595840][  T298] Code: 1b 48 8d bb b8 04 00 00 be 08 00 00 00 e8 33 fd f1 ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 fb 85 b7 ff <0f> 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c
[   24.615474][  T298] RSP: 0018:ffffc90000b57c10 EFLAGS: 00010293
[   24.621546][  T298] RAX: ffffffff81ad1d85 RBX: ffff88811af8d280 RCX: ffff8881203e8000
[   24.629565][  T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   24.637552][  T298] RBP: ffffc90000b57c38 R08: 0000000000000003 R09: 0000000000000004
[   24.645579][  T298] R10: dffffc0000000000 R11: fffff5200016af70 R12: dffffc0000000000
[   24.653567][  T298] R13: 1ffff110235f1a59 R14: ffff88811af8d2c8 R15: 0000000000000000
[   24.661525][  T298] FS:  0000555563051480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   24.670475][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.677086][  T298] CR2: 0000555563062858 CR3: 000000010aab8000 CR4: 00000000003506a0
[   24.685087][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.693121][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.701090][  T298] Call Trace:
[   24.704414][  T298]  shmem_rmdir+0x5b/0x90
[   24.708663][  T298]  vfs_rmdir+0x1ab/0x3c0
[   24.712896][  T298]  incfs_kill_sb+0xf7/0x200
[   24.717432][  T298]  deactivate_locked_super+0xa0/0x100
[   24.722790][  T298]  deactivate_super+0xaf/0xe0
[   24.727491][  T298]  cleanup_mnt+0x44f/0x500
[   24.731904][  T298]  __cleanup_mnt+0x19/0x20
[   24.736335][  T298]  task_work_run+0x127/0x190
[   24.740925][  T298]  ptrace_notify+0x230/0x270
[   24.745521][  T298]  ? do_notify_parent+0x810/0x810
[   24.750540][  T298]  ? user_path_at_empty+0x43/0x50
[   24.755574][  T298]  ? __x64_sys_umount+0x12d/0x170
[   24.760593][  T298]  ? path_umount+0xfa0/0xfa0
[   24.765193][  T298]  syscall_exit_work+0x6e/0x140
[   24.770042][  T298]  syscall_exit_to_user_mode+0x2f/0x40
[   24.775509][  T298]  do_syscall_64+0x3d/0x40
[   24.779924][  T298]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   24.785826][  T298] RIP: 0033:0x7f486da1d667
[   24.790240][  T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   24.809892][  T298] RSP: 002b:00007ffc54394d28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   24.818336][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f486da1d667
[   24.826336][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc54394de0
[   24.834324][  T298] RBP: 00007ffc54394de0 R08: 00007ffc54395de0 R09: 00000000ffffffff
[   24.842543][  T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc54395e50
[   24.850534][  T298] R13: 00005555630527e0 R14: 431bde82d7b634db R15: 00007ffc54395e70
[   24.858519][  T298] ---[ end trace a851772369098ab2 ]---
[   24.864056][  T298] ==================================================================
[   24.872239][  T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60
[   24.878461][  T298] Write of size 4 at addr 0000000000000170 by task syz-executor281/298
[   24.886786][  T298] 
[   24.889109][  T298] CPU: 1 PID: 298 Comm: syz-executor281 Tainted: G        W         syzkaller #0
[   24.898196][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   24.908239][  T298] Call Trace:
[   24.911518][  T298]  __dump_stack+0x21/0x24
[   24.915846][  T298]  dump_stack_lvl+0x1a7/0x208
[   24.920507][  T298]  ? thaw_kernel_threads+0x220/0x220
[   24.925789][  T298]  ? show_regs_print_info+0x18/0x18
[   24.930968][  T298]  ? _raw_spin_lock+0x94/0xf0
[   24.935625][  T298]  ? _raw_spin_trylock_bh+0x150/0x150
[   24.940977][  T298]  ? ihold+0x20/0x60
[   24.944855][  T298]  kasan_report+0xbd/0x140
[   24.949857][  T298]  ? ihold+0x20/0x60
[   24.953731][  T298]  kasan_check_range+0x249/0x2a0
[   24.958646][  T298]  __kasan_check_write+0x14/0x20
[   24.963562][  T298]  ihold+0x20/0x60
[   24.967263][  T298]  vfs_rmdir+0x2d5/0x3c0
[   24.971485][  T298]  incfs_kill_sb+0xf7/0x200
[   24.975973][  T298]  deactivate_locked_super+0xa0/0x100
[   24.981325][  T298]  deactivate_super+0xaf/0xe0
[   24.985998][  T298]  cleanup_mnt+0x44f/0x500
[   24.990418][  T298]  __cleanup_mnt+0x19/0x20
[   24.994942][  T298]  task_work_run+0x127/0x190
[   24.999521][  T298]  ptrace_notify+0x230/0x270
[   25.004099][  T298]  ? do_notify_parent+0x810/0x810
[   25.009116][  T298]  ? user_path_at_empty+0x43/0x50
[   25.014234][  T298]  ? __x64_sys_umount+0x12d/0x170
[   25.019243][  T298]  ? path_umount+0xfa0/0xfa0
[   25.023813][  T298]  syscall_exit_work+0x6e/0x140
[   25.028665][  T298]  syscall_exit_to_user_mode+0x2f/0x40
[   25.034129][  T298]  do_syscall_64+0x3d/0x40
[   25.038534][  T298]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.044412][  T298] RIP: 0033:0x7f486da1d667
[   25.048924][  T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   25.068650][  T298] RSP: 002b:00007ffc54394d28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   25.077053][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f486da1d667
[   25.085023][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc54394de0
[   25.092978][  T298] RBP: 00007ffc54394de0 R08: 00007ffc54395de0 R09: 00000000ffffffff
[   25.100930][  T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc54395e50
[   25.108883][  T298] R13: 00005555630527e0 R14: 431bde82d7b634db R15: 00007ffc54395e70
[   25.116855][  T298] ==================================================================
[   25.124900][  T298] Disabling lock debugging due to kernel taint
[   25.131142][  T298] BUG: kernel NULL pointer dereference, address: 0000000000000170
[   25.139035][  T298] #PF: supervisor write access in kernel mode
[   25.145256][  T298] #PF: error_code(0x0002) - not-present page
[   25.151215][  T298] PGD 0 P4D 0 
[   25.154577][  T298] Oops: 0002 [#1] PREEMPT SMP KASAN
[   25.159772][  T298] CPU: 1 PID: 298 Comm: syz-executor281 Tainted: G    B   W         syzkaller #0
[   25.168855][  T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   25.178899][  T298] RIP: 0010:ihold+0x26/0x60
[   25.183391][  T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 11 7e b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 20 f5 f1 ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 70 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 91
[   25.203093][  T298] RSP: 0018:ffffc90000b57c50 EFLAGS: 00010246
[   25.209162][  T298] RAX: ffff8881203e8000 RBX: 0000000000000000 RCX: ffff8881203e8000
[   25.217133][  T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   25.225108][  T298] RBP: ffffc90000b57c60 R08: 0000000000000003 R09: 0000000000000004
[   25.233073][  T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000
[   25.241127][  T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   25.249098][  T298] FS:  0000555563051480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.258021][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.264603][  T298] CR2: 0000000000000170 CR3: 000000010aab8000 CR4: 00000000003506a0
[   25.272576][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.280562][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.288524][  T298] Call Trace:
[   25.291817][  T298]  vfs_rmdir+0x2d5/0x3c0
[   25.296062][  T298]  incfs_kill_sb+0xf7/0x200
[   25.300562][  T298]  deactivate_locked_super+0xa0/0x100
[   25.305926][  T298]  deactivate_super+0xaf/0xe0
[   25.310623][  T298]  cleanup_mnt+0x44f/0x500
[   25.315047][  T298]  __cleanup_mnt+0x19/0x20
[   25.319465][  T298]  task_work_run+0x127/0x190
[   25.324057][  T298]  ptrace_notify+0x230/0x270
[   25.328638][  T298]  ? do_notify_parent+0x810/0x810
[   25.333658][  T298]  ? user_path_at_empty+0x43/0x50
[   25.338675][  T298]  ? __x64_sys_umount+0x12d/0x170
[   25.343709][  T298]  ? path_umount+0xfa0/0xfa0
[   25.348290][  T298]  syscall_exit_work+0x6e/0x140
[   25.353138][  T298]  syscall_exit_to_user_mode+0x2f/0x40
[   25.358588][  T298]  do_syscall_64+0x3d/0x40
[   25.363001][  T298]  entry_SYSCALL_64_after_hwframe+0x61/0xcb
[   25.368889][  T298] RIP: 0033:0x7f486da1d667
[   25.373300][  T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8
[   25.392900][  T298] RSP: 002b:00007ffc54394d28 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[   25.401305][  T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f486da1d667
[   25.409269][  T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc54394de0
[   25.417232][  T298] RBP: 00007ffc54394de0 R08: 00007ffc54395de0 R09: 00000000ffffffff
[   25.425195][  T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc54395e50
[   25.433159][  T298] R13: 00005555630527e0 R14: 431bde82d7b634db R15: 00007ffc54395e70
[   25.441124][  T298] Modules linked in:
[   25.445045][  T298] CR2: 0000000000000170
[   25.449192][  T298] ---[ end trace a851772369098ab3 ]---
[   25.454645][  T298] RIP: 0010:ihold+0x26/0x60
[   25.459225][  T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 11 7e b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 20 f5 f1 ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 70 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 91
[   25.478825][  T298] RSP: 0018:ffffc90000b57c50 EFLAGS: 00010246
[   25.484885][  T298] RAX: ffff8881203e8000 RBX: 0000000000000000 RCX: ffff8881203e8000
[   25.492850][  T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff
[   25.500818][  T298] RBP: ffffc90000b57c60 R08: 0000000000000003 R09: 0000000000000004
[   25.508787][  T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000
[   25.516754][  T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   25.524720][  T298] FS:  0000555563051480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
[   25.533639][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.540214][  T298] CR2: 0000000000000170 CR3: 000000010aab8000 CR4: 00000000003506a0
[   25.548186][  T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.556154][  T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.564125][  T298] Kernel panic - not syncing: Fatal exception
[   25.570248][  T298] Kernel Offset: disabled
[   25.574570][  T298] Rebooting in 86400 seconds..