./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2519356922
<...>
Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts.
execve("./syz-executor2519356922", ["./syz-executor2519356922"], 0x7ffd5d3a6020 /* 10 vars */) = 0
brk(NULL) = 0x555555be9000
brk(0x555555be9c40) = 0x555555be9c40
arch_prctl(ARCH_SET_FS, 0x555555be9300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor2519356922", 4096) = 28
brk(0x555555c0ac40) = 0x555555c0ac40
brk(0x555555c0b000) = 0x555555c0b000
mprotect(0x7fc6cdfc2000, 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
getpid() = 4996
mkdir("./syzkaller.a9xWDY", 0700) = 0
chmod("./syzkaller.a9xWDY", 0777) = 0
chdir("./syzkaller.a9xWDY") = 0
mkdir("./0", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 4997
./strace-static-x86_64: Process 4997 attached
[pid 4997] chdir("./0") = 0
[pid 4997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 4997] setpgid(0, 0) = 0
[pid 4997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 4997] write(3, "1000", 4) = 4
[pid 4997] close(3) = 0
[pid 4997] symlink("/dev/binderfs", "./binderfs") = 0
[pid 4997] creat("./bus", 010) = 3
[pid 4997] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 4997] memfd_create("syzkaller", 0) = 4
[pid 4997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 4997] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 4997] munmap(0x7fc6c5b06000, 262144) = 0
[pid 4997] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 4997] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 4997] close(4) = 0
[pid 4997] mkdir("./file0", 0777) = 0
[ 70.659682][ T4997] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4997 'syz-executor251'
[ 70.681715][ T4997] loop0: detected capacity change from 0 to 512
[pid 4997] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 4997] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 4997] chdir("./file0") = 0
[pid 4997] ioctl(5, LOOP_CLR_FD) = 0
[pid 4997] close(5) = 0
[pid 4997] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 4997] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 4997] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 4997] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 4997] exit_group(0) = ?
[pid 4997] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=4997, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./0/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./0/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
[ 70.702864][ T4997] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 70.715812][ T4997] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/0/file0 supports timestamps until 2038-01-19 (0x7fffffff)
unlink("./0/bus") = 0
umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./0/binderfs") = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./0/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./0") = 0
[ 70.782011][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
mkdir("./1", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5002
./strace-static-x86_64: Process 5002 attached
[pid 5002] chdir("./1") = 0
[pid 5002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5002] setpgid(0, 0) = 0
[pid 5002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5002] write(3, "1000", 4) = 4
[pid 5002] close(3) = 0
[pid 5002] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5002] creat("./bus", 010) = 3
[pid 5002] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5002] memfd_create("syzkaller", 0) = 4
[pid 5002] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5002] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5002] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5002] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5002] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5002] close(4) = 0
[pid 5002] mkdir("./file0", 0777) = 0
[pid 5002] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5002] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5002] chdir("./file0") = 0
[pid 5002] ioctl(5, LOOP_CLR_FD) = 0
[pid 5002] close(5) = 0
[pid 5002] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5002] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5002] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5002] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5002] exit_group(0) = ?
[pid 5002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5002, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 70.874872][ T5002] loop0: detected capacity change from 0 to 512
[ 70.900040][ T5002] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 70.912675][ T5002] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/1/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./1/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./1/bus") = 0
umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./1/binderfs") = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./1/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./1") = 0
mkdir("./2", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5005
./strace-static-x86_64: Process 5005 attached
[pid 5005] chdir("./2") = 0
[pid 5005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5005] setpgid(0, 0) = 0
[pid 5005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5005] write(3, "1000", 4) = 4
[pid 5005] close(3) = 0
[ 70.990967][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5005] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5005] creat("./bus", 010) = 3
[pid 5005] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5005] memfd_create("syzkaller", 0) = 4
[pid 5005] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5005] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5005] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5005] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5005] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5005] close(4) = 0
[pid 5005] mkdir("./file0", 0777) = 0
[pid 5005] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5005] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5005] chdir("./file0") = 0
[pid 5005] ioctl(5, LOOP_CLR_FD) = 0
[pid 5005] close(5) = 0
[pid 5005] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5005] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5005] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5005] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5005] exit_group(0) = ?
[pid 5005] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5005, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./2/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./2/bus") = 0
umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./2/binderfs") = 0
[ 71.068818][ T5005] loop0: detected capacity change from 0 to 512
[ 71.089830][ T5005] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 71.102659][ T5005] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/2/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./2/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./2") = 0
mkdir("./3", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5009
./strace-static-x86_64: Process 5009 attached
[pid 5009] chdir("./3") = 0
[pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5009] setpgid(0, 0) = 0
[pid 5009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5009] write(3, "1000", 4) = 4
[pid 5009] close(3) = 0
[pid 5009] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5009] creat("./bus", 010) = 3
[pid 5009] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5009] memfd_create("syzkaller", 0) = 4
[pid 5009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5009] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5009] munmap(0x7fc6c5b06000, 262144) = 0
[ 71.159296][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5009] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5009] close(4) = 0
[pid 5009] mkdir("./file0", 0777) = 0
[pid 5009] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5009] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5009] chdir("./file0") = 0
[pid 5009] ioctl(5, LOOP_CLR_FD) = 0
[pid 5009] close(5) = 0
[pid 5009] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5009] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5009] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5009] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5009] exit_group(0) = ?
[pid 5009] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5009, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./3/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./3/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./3/bus") = 0
umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./3/binderfs") = 0
[ 71.221721][ T5009] loop0: detected capacity change from 0 to 512
[ 71.240442][ T5009] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 71.253323][ T5009] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/3/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./3/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./3") = 0
mkdir("./4", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
[ 71.310758][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5012
./strace-static-x86_64: Process 5012 attached
[pid 5012] chdir("./4") = 0
[pid 5012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5012] setpgid(0, 0) = 0
[pid 5012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5012] write(3, "1000", 4) = 4
[pid 5012] close(3) = 0
[pid 5012] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5012] creat("./bus", 010) = 3
[pid 5012] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5012] memfd_create("syzkaller", 0) = 4
[pid 5012] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5012] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5012] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5012] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5012] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5012] close(4) = 0
[pid 5012] mkdir("./file0", 0777) = 0
[pid 5012] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5012] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5012] chdir("./file0") = 0
[pid 5012] ioctl(5, LOOP_CLR_FD) = 0
[pid 5012] close(5) = 0
[pid 5012] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5012] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5012] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5012] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5012] exit_group(0) = ?
[pid 5012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5012, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[ 71.400331][ T5012] loop0: detected capacity change from 0 to 512
[ 71.419484][ T5012] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 71.432349][ T5012] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/4/file0 supports timestamps until 2038-01-19 (0x7fffffff)
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./4/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./4/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./4/bus") = 0
umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./4/binderfs") = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./4/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./4/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./4") = 0
mkdir("./5", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5015
[ 71.498986][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
./strace-static-x86_64: Process 5015 attached
[pid 5015] chdir("./5") = 0
[pid 5015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5015] setpgid(0, 0) = 0
[pid 5015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5015] write(3, "1000", 4) = 4
[pid 5015] close(3) = 0
[pid 5015] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5015] creat("./bus", 010) = 3
[pid 5015] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5015] memfd_create("syzkaller", 0) = 4
[pid 5015] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5015] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5015] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5015] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5015] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5015] close(4) = 0
[pid 5015] mkdir("./file0", 0777) = 0
[pid 5015] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5015] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5015] chdir("./file0") = 0
[pid 5015] ioctl(5, LOOP_CLR_FD) = 0
[pid 5015] close(5) = 0
[pid 5015] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5015] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5015] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5015] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5015] exit_group(0) = ?
[pid 5015] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5015, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
[ 71.588274][ T5015] loop0: detected capacity change from 0 to 512
[ 71.609151][ T5015] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 71.621769][ T5015] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/5/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./5/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./5/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./5/bus") = 0
umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./5/binderfs") = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./5/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./5/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./5") = 0
mkdir("./6", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5018
./strace-static-x86_64: Process 5018 attached
[ 71.689518][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5018] chdir("./6") = 0
[pid 5018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5018] setpgid(0, 0) = 0
[pid 5018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5018] write(3, "1000", 4) = 4
[pid 5018] close(3) = 0
[pid 5018] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5018] creat("./bus", 010) = 3
[pid 5018] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5018] memfd_create("syzkaller", 0) = 4
[pid 5018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5018] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5018] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5018] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5018] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5018] close(4) = 0
[pid 5018] mkdir("./file0", 0777) = 0
[pid 5018] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5018] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5018] chdir("./file0") = 0
[pid 5018] ioctl(5, LOOP_CLR_FD) = 0
[pid 5018] close(5) = 0
[pid 5018] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5018] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5018] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5018] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5018] exit_group(0) = ?
[ 71.768032][ T5018] loop0: detected capacity change from 0 to 512
[ 71.789315][ T5018] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 71.802031][ T5018] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/6/file0 supports timestamps until 2038-01-19 (0x7fffffff)
[pid 5018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5018, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./6/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./6/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./6/bus") = 0
umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./6/binderfs") = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./6/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
[ 71.862135][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
rmdir("./6/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./6") = 0
mkdir("./7", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5021
./strace-static-x86_64: Process 5021 attached
[pid 5021] chdir("./7") = 0
[pid 5021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5021] setpgid(0, 0) = 0
[pid 5021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5021] write(3, "1000", 4) = 4
[pid 5021] close(3) = 0
[pid 5021] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5021] creat("./bus", 010) = 3
[pid 5021] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5021] memfd_create("syzkaller", 0) = 4
[pid 5021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5021] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5021] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5021] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5021] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5021] close(4) = 0
[pid 5021] mkdir("./file0", 0777) = 0
[pid 5021] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5021] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5021] chdir("./file0") = 0
[pid 5021] ioctl(5, LOOP_CLR_FD) = 0
[pid 5021] close(5) = 0
[pid 5021] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5021] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5021] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5021] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5021] exit_group(0) = ?
[pid 5021] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5021, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./7/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./7/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./7/bus") = 0
umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./7/binderfs") = 0
[ 71.951630][ T5021] loop0: detected capacity change from 0 to 512
[ 71.968998][ T5021] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 71.981635][ T5021] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/7/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./7/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./7/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./7") = 0
mkdir("./8", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5024
./strace-static-x86_64: Process 5024 attached
[pid 5024] chdir("./8") = 0
[pid 5024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5024] setpgid(0, 0) = 0
[pid 5024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5024] write(3, "1000", 4) = 4
[pid 5024] close(3) = 0
[pid 5024] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5024] creat("./bus", 010) = 3
[ 72.059260][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5024] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5024] memfd_create("syzkaller", 0) = 4
[pid 5024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5024] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5024] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5024] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5024] close(4) = 0
[pid 5024] mkdir("./file0", 0777) = 0
[pid 5024] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5024] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5024] chdir("./file0") = 0
[pid 5024] ioctl(5, LOOP_CLR_FD) = 0
[pid 5024] close(5) = 0
[pid 5024] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5024] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5024] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5024] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5024] exit_group(0) = ?
[pid 5024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5024, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[ 72.129887][ T5024] loop0: detected capacity change from 0 to 512
[ 72.150553][ T5024] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 72.163488][ T5024] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/8/file0 supports timestamps until 2038-01-19 (0x7fffffff)
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./8/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./8/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./8/bus") = 0
umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./8/binderfs") = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./8/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./8") = 0
mkdir("./9", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5027
./strace-static-x86_64: Process 5027 attached
[pid 5027] chdir("./9") = 0
[pid 5027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5027] setpgid(0, 0) = 0
[pid 5027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5027] write(3, "1000", 4) = 4
[pid 5027] close(3) = 0
[pid 5027] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5027] creat("./bus", 010) = 3
[pid 5027] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5027] memfd_create("syzkaller", 0) = 4
[pid 5027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[ 72.220808][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5027] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5027] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5027] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5027] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5027] close(4) = 0
[pid 5027] mkdir("./file0", 0777) = 0
[ 72.285469][ T5027] loop0: detected capacity change from 0 to 512
[ 72.318740][ T5027] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[pid 5027] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5027] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5027] chdir("./file0") = 0
[pid 5027] ioctl(5, LOOP_CLR_FD) = 0
[pid 5027] close(5) = 0
[pid 5027] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5027] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5027] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5027] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5027] exit_group(0) = ?
[pid 5027] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5027, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./9/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./9/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./9/bus") = 0
umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./9/binderfs") = 0
[ 72.331434][ T5027] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/9/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./9/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./9") = 0
mkdir("./10", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5030
./strace-static-x86_64: Process 5030 attached
[pid 5030] chdir("./10") = 0
[ 72.389076][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5030] setpgid(0, 0) = 0
[pid 5030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5030] write(3, "1000", 4) = 4
[pid 5030] close(3) = 0
[pid 5030] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5030] creat("./bus", 010) = 3
[pid 5030] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5030] memfd_create("syzkaller", 0) = 4
[pid 5030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5030] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5030] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5030] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5030] close(4) = 0
[pid 5030] mkdir("./file0", 0777) = 0
[pid 5030] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5030] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5030] chdir("./file0") = 0
[pid 5030] ioctl(5, LOOP_CLR_FD) = 0
[pid 5030] close(5) = 0
[pid 5030] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5030] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5030] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5030] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5030] exit_group(0) = ?
[pid 5030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5030, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./10/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./10/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./10/bus") = 0
umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./10/binderfs") = 0
[ 72.466948][ T5030] loop0: detected capacity change from 0 to 512
[ 72.489520][ T5030] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 72.502434][ T5030] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/10/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./10/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./10/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
[ 72.549309][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
close(3) = 0
rmdir("./10") = 0
mkdir("./11", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5033
./strace-static-x86_64: Process 5033 attached
[pid 5033] chdir("./11") = 0
[pid 5033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5033] setpgid(0, 0) = 0
[pid 5033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5033] write(3, "1000", 4) = 4
[pid 5033] close(3) = 0
[pid 5033] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5033] creat("./bus", 010) = 3
[pid 5033] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5033] memfd_create("syzkaller", 0) = 4
[pid 5033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5033] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5033] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5033] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5033] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5033] close(4) = 0
[pid 5033] mkdir("./file0", 0777) = 0
[pid 5033] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5033] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5033] chdir("./file0") = 0
[pid 5033] ioctl(5, LOOP_CLR_FD) = 0
[pid 5033] close(5) = 0
[pid 5033] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5033] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5033] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5033] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5033] exit_group(0) = ?
[pid 5033] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5033, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./11/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./11/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./11/bus") = 0
umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./11/binderfs") = 0
[ 72.651256][ T5033] loop0: detected capacity change from 0 to 512
[ 72.669841][ T5033] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 72.682694][ T5033] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/11/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./11/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./11/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./11") = 0
mkdir("./12", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
[ 72.730807][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5036
./strace-static-x86_64: Process 5036 attached
[pid 5036] chdir("./12") = 0
[pid 5036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5036] setpgid(0, 0) = 0
[pid 5036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5036] write(3, "1000", 4) = 4
[pid 5036] close(3) = 0
[pid 5036] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5036] creat("./bus", 010) = 3
[pid 5036] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5036] memfd_create("syzkaller", 0) = 4
[pid 5036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5036] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5036] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5036] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5036] close(4) = 0
[pid 5036] mkdir("./file0", 0777) = 0
[pid 5036] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5036] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5036] chdir("./file0") = 0
[pid 5036] ioctl(5, LOOP_CLR_FD) = 0
[pid 5036] close(5) = 0
[pid 5036] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5036] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5036] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5036] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5036] exit_group(0) = ?
[pid 5036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5036, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./12/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./12/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./12/bus") = 0
umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./12/binderfs") = 0
[ 72.819481][ T5036] loop0: detected capacity change from 0 to 512
[ 72.839062][ T5036] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 72.851761][ T5036] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/12/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./12/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./12/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./12") = 0
mkdir("./13", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5039
./strace-static-x86_64: Process 5039 attached
[pid 5039] chdir("./13") = 0
[pid 5039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5039] setpgid(0, 0) = 0
[pid 5039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5039] write(3, "1000", 4) = 4
[pid 5039] close(3) = 0
[pid 5039] symlink("/dev/binderfs", "./binderfs") = 0
[ 72.910162][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5039] creat("./bus", 010) = 3
[pid 5039] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5039] memfd_create("syzkaller", 0) = 4
[pid 5039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5039] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5039] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5039] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5039] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5039] close(4) = 0
[pid 5039] mkdir("./file0", 0777) = 0
[pid 5039] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5039] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5039] chdir("./file0") = 0
[pid 5039] ioctl(5, LOOP_CLR_FD) = 0
[pid 5039] close(5) = 0
[pid 5039] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5039] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5039] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5039] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5039] exit_group(0) = ?
[pid 5039] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5039, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./13/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./13/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./13/bus") = 0
[ 72.982369][ T5039] loop0: detected capacity change from 0 to 512
[ 72.999797][ T5039] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 73.012728][ T5039] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/13/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./13/binderfs") = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 73.070855][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
openat(AT_FDCWD, "./13/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./13/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./13") = 0
mkdir("./14", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5042
./strace-static-x86_64: Process 5042 attached
[pid 5042] chdir("./14") = 0
[pid 5042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5042] setpgid(0, 0) = 0
[pid 5042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5042] write(3, "1000", 4) = 4
[pid 5042] close(3) = 0
[pid 5042] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5042] creat("./bus", 010) = 3
[pid 5042] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5042] memfd_create("syzkaller", 0) = 4
[pid 5042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5042] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5042] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5042] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5042] close(4) = 0
[pid 5042] mkdir("./file0", 0777) = 0
[pid 5042] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5042] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5042] chdir("./file0") = 0
[pid 5042] ioctl(5, LOOP_CLR_FD) = 0
[pid 5042] close(5) = 0
[pid 5042] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5042] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5042] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5042] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5042] exit_group(0) = ?
[pid 5042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5042, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./14/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./14/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./14/bus") = 0
umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./14/binderfs") = 0
[ 73.168704][ T5042] loop0: detected capacity change from 0 to 512
[ 73.189352][ T5042] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 73.201983][ T5042] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/14/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./14/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./14/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./14") = 0
mkdir("./15", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5045
./strace-static-x86_64: Process 5045 attached
[ 73.250637][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5045] chdir("./15") = 0
[pid 5045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5045] setpgid(0, 0) = 0
[pid 5045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5045] write(3, "1000", 4) = 4
[pid 5045] close(3) = 0
[pid 5045] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5045] creat("./bus", 010) = 3
[pid 5045] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5045] memfd_create("syzkaller", 0) = 4
[pid 5045] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5045] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5045] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5045] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5045] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5045] close(4) = 0
[pid 5045] mkdir("./file0", 0777) = 0
[pid 5045] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5045] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5045] chdir("./file0") = 0
[pid 5045] ioctl(5, LOOP_CLR_FD) = 0
[pid 5045] close(5) = 0
[pid 5045] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5045] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5045] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5045] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5045] exit_group(0) = ?
[pid 5045] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5045, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./15/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./15/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./15/bus") = 0
umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./15/binderfs") = 0
[ 73.326699][ T5045] loop0: detected capacity change from 0 to 512
[ 73.349279][ T5045] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 73.362037][ T5045] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/15/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./15/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./15/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./15") = 0
mkdir("./16", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5048
./strace-static-x86_64: Process 5048 attached
[pid 5048] chdir("./16") = 0
[pid 5048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5048] setpgid(0, 0) = 0
[pid 5048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5048] write(3, "1000", 4) = 4
[pid 5048] close(3) = 0
[pid 5048] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5048] creat("./bus", 010) = 3
[pid 5048] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5048] memfd_create("syzkaller", 0) = 4
[pid 5048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5048] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[ 73.429023][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5048] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5048] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5048] close(4) = 0
[pid 5048] mkdir("./file0", 0777) = 0
[pid 5048] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5048] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5048] chdir("./file0") = 0
[pid 5048] ioctl(5, LOOP_CLR_FD) = 0
[pid 5048] close(5) = 0
[pid 5048] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5048] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5048] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5048] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5048] exit_group(0) = ?
[pid 5048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5048, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./16/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./16/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./16/bus") = 0
umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./16/binderfs") = 0
[ 73.492389][ T5048] loop0: detected capacity change from 0 to 512
[ 73.509591][ T5048] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 73.522431][ T5048] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/16/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./16/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./16/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./16") = 0
mkdir("./17", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5051
./strace-static-x86_64: Process 5051 attached
[pid 5051] chdir("./17") = 0
[pid 5051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5051] setpgid(0, 0) = 0
[pid 5051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5051] write(3, "1000", 4) = 4
[pid 5051] close(3) = 0
[pid 5051] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5051] creat("./bus", 010) = 3
[pid 5051] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5051] memfd_create("syzkaller", 0) = 4
[ 73.580778][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5051] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5051] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5051] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5051] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5051] close(4) = 0
[pid 5051] mkdir("./file0", 0777) = 0
[pid 5051] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5051] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5051] chdir("./file0") = 0
[pid 5051] ioctl(5, LOOP_CLR_FD) = 0
[pid 5051] close(5) = 0
[pid 5051] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5051] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5051] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5051] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5051] exit_group(0) = ?
[pid 5051] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5051, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 73.648031][ T5051] loop0: detected capacity change from 0 to 512
[ 73.670049][ T5051] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 73.682901][ T5051] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/17/file0 supports timestamps until 2038-01-19 (0x7fffffff)
openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./17/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./17/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./17/bus") = 0
umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./17/binderfs") = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./17/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./17/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./17") = 0
mkdir("./18", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
[ 73.759126][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5054
./strace-static-x86_64: Process 5054 attached
[pid 5054] chdir("./18") = 0
[pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5054] setpgid(0, 0) = 0
[pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5054] write(3, "1000", 4) = 4
[pid 5054] close(3) = 0
[pid 5054] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5054] creat("./bus", 010) = 3
[pid 5054] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5054] memfd_create("syzkaller", 0) = 4
[pid 5054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5054] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5054] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5054] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5054] close(4) = 0
[pid 5054] mkdir("./file0", 0777) = 0
[pid 5054] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5054] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5054] chdir("./file0") = 0
[pid 5054] ioctl(5, LOOP_CLR_FD) = 0
[pid 5054] close(5) = 0
[pid 5054] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5054] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5054] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5054] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5054] exit_group(0) = ?
[pid 5054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5054, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./18/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./18/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./18/bus") = 0
umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./18/binderfs") = 0
[ 73.852152][ T5054] loop0: detected capacity change from 0 to 512
[ 73.869780][ T5054] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 73.882745][ T5054] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/18/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./18/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./18/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./18") = 0
[ 73.948924][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
mkdir("./19", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5057
./strace-static-x86_64: Process 5057 attached
[pid 5057] chdir("./19") = 0
[pid 5057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5057] setpgid(0, 0) = 0
[pid 5057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5057] write(3, "1000", 4) = 4
[pid 5057] close(3) = 0
[pid 5057] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5057] creat("./bus", 010) = 3
[pid 5057] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5057] memfd_create("syzkaller", 0) = 4
[pid 5057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5057] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5057] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5057] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5057] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5057] close(4) = 0
[pid 5057] mkdir("./file0", 0777) = 0
[pid 5057] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5057] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5057] chdir("./file0") = 0
[pid 5057] ioctl(5, LOOP_CLR_FD) = 0
[pid 5057] close(5) = 0
[pid 5057] mkdirat(AT_FDCWD, "./bus", 000) = 0
[ 74.044373][ T5057] loop0: detected capacity change from 0 to 512
[ 74.069408][ T5057] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 74.082370][ T5057] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/19/file0 supports timestamps until 2038-01-19 (0x7fffffff)
[pid 5057] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5057] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5057] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5057] exit_group(0) = ?
[pid 5057] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5057, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./19/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./19/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./19/bus") = 0
umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./19/binderfs") = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./19/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./19") = 0
mkdir("./20", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5060 attached
, child_tidptr=0x555555be95d0) = 5060
[pid 5060] chdir("./20") = 0
[pid 5060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5060] setpgid(0, 0) = 0
[pid 5060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5060] write(3, "1000", 4) = 4
[pid 5060] close(3) = 0
[pid 5060] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5060] creat("./bus", 010) = 3
[pid 5060] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[ 74.138976][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5060] memfd_create("syzkaller", 0) = 4
[pid 5060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5060] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5060] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5060] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5060] close(4) = 0
[pid 5060] mkdir("./file0", 0777) = 0
[ 74.211098][ T5060] loop0: detected capacity change from 0 to 512
[ 74.239282][ T5060] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[pid 5060] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5060] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5060] chdir("./file0") = 0
[pid 5060] ioctl(5, LOOP_CLR_FD) = 0
[pid 5060] close(5) = 0
[pid 5060] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5060] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5060] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5060] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5060] exit_group(0) = ?
[pid 5060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5060, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./20/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./20/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./20/bus") = 0
umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./20/binderfs") = 0
[ 74.251917][ T5060] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/20/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./20/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./20") = 0
mkdir("./21", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5063
./strace-static-x86_64: Process 5063 attached
[pid 5063] chdir("./21") = 0
[pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5063] setpgid(0, 0) = 0
[pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5063] write(3, "1000", 4) = 4
[pid 5063] close(3) = 0
[pid 5063] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5063] creat("./bus", 010) = 3
[pid 5063] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5063] memfd_create("syzkaller", 0) = 4
[pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5063] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5063] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[ 74.308950][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5063] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5063] close(4) = 0
[pid 5063] mkdir("./file0", 0777) = 0
[ 74.352968][ T5063] loop0: detected capacity change from 0 to 512
[ 74.389061][ T5063] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[pid 5063] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5063] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5063] chdir("./file0") = 0
[pid 5063] ioctl(5, LOOP_CLR_FD) = 0
[pid 5063] close(5) = 0
[pid 5063] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5063] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5063] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5063] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5063] exit_group(0) = ?
[pid 5063] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./21/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./21/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./21/bus") = 0
umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./21/binderfs") = 0
[ 74.402038][ T5063] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/21/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./21/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
[ 74.469583][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
rmdir("./21") = 0
mkdir("./22", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5066
./strace-static-x86_64: Process 5066 attached
[pid 5066] chdir("./22") = 0
[pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5066] setpgid(0, 0) = 0
[pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5066] write(3, "1000", 4) = 4
[pid 5066] close(3) = 0
[pid 5066] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5066] creat("./bus", 010) = 3
[pid 5066] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5066] memfd_create("syzkaller", 0) = 4
[pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5066] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5066] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5066] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5066] close(4) = 0
[pid 5066] mkdir("./file0", 0777) = 0
[pid 5066] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5066] chdir("./file0") = 0
[pid 5066] ioctl(5, LOOP_CLR_FD) = 0
[pid 5066] close(5) = 0
[pid 5066] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5066] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5066] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5066] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5066] exit_group(0) = ?
[pid 5066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./22/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./22/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./22/bus") = 0
umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./22/binderfs") = 0
[ 74.543154][ T5066] loop0: detected capacity change from 0 to 512
[ 74.559614][ T5066] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 74.572840][ T5066] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/22/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./22/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./22/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./22") = 0
mkdir("./23", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5069
./strace-static-x86_64: Process 5069 attached
[pid 5069] chdir("./23") = 0
[pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5069] setpgid(0, 0) = 0
[ 74.639115][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5069] write(3, "1000", 4) = 4
[pid 5069] close(3) = 0
[pid 5069] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5069] creat("./bus", 010) = 3
[pid 5069] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5069] memfd_create("syzkaller", 0) = 4
[pid 5069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5069] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5069] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5069] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5069] close(4) = 0
[pid 5069] mkdir("./file0", 0777) = 0
[pid 5069] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5069] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5069] chdir("./file0") = 0
[pid 5069] ioctl(5, LOOP_CLR_FD) = 0
[pid 5069] close(5) = 0
[pid 5069] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5069] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5069] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5069] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5069] exit_group(0) = ?
[pid 5069] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./23/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./23/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./23/bus") = 0
umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./23/binderfs") = 0
[ 74.714057][ T5069] loop0: detected capacity change from 0 to 512
[ 74.730264][ T5069] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 74.743272][ T5069] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/23/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./23/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./23/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./23") = 0
mkdir("./24", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5072
./strace-static-x86_64: Process 5072 attached
[pid 5072] chdir("./24") = 0
[pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5072] setpgid(0, 0) = 0
[pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5072] write(3, "1000", 4) = 4
[pid 5072] close(3) = 0
[ 74.788553][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5072] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5072] creat("./bus", 010) = 3
[pid 5072] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5072] memfd_create("syzkaller", 0) = 4
[pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5072] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5072] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5072] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5072] close(4) = 0
[pid 5072] mkdir("./file0", 0777) = 0
[pid 5072] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5072] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5072] chdir("./file0") = 0
[pid 5072] ioctl(5, LOOP_CLR_FD) = 0
[pid 5072] close(5) = 0
[pid 5072] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5072] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5072] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5072] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5072] exit_group(0) = ?
[pid 5072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./24/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./24/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./24/bus") = 0
umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./24/binderfs") = 0
[ 74.863753][ T5072] loop0: detected capacity change from 0 to 512
[ 74.880268][ T5072] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 74.893243][ T5072] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/24/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./24/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./24/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./24/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./24") = 0
mkdir("./25", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5075
./strace-static-x86_64: Process 5075 attached
[pid 5075] chdir("./25") = 0
[ 74.938442][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5075] setpgid(0, 0) = 0
[pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5075] write(3, "1000", 4) = 4
[pid 5075] close(3) = 0
[pid 5075] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5075] creat("./bus", 010) = 3
[pid 5075] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5075] memfd_create("syzkaller", 0) = 4
[pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5075] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5075] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5075] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5075] close(4) = 0
[pid 5075] mkdir("./file0", 0777) = 0
[pid 5075] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5075] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5075] chdir("./file0") = 0
[pid 5075] ioctl(5, LOOP_CLR_FD) = 0
[pid 5075] close(5) = 0
[pid 5075] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5075] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5075] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5075] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5075] exit_group(0) = ?
[pid 5075] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
[ 75.034300][ T5075] loop0: detected capacity change from 0 to 512
[ 75.059045][ T5075] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 75.071826][ T5075] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/25/file0 supports timestamps until 2038-01-19 (0x7fffffff)
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./25/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./25/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./25/bus") = 0
umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./25/binderfs") = 0
umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./25/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./25/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./25/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./25") = 0
mkdir("./26", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5078
./strace-static-x86_64: Process 5078 attached
[pid 5078] chdir("./26") = 0
[pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5078] setpgid(0, 0) = 0
[ 75.129036][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5078] write(3, "1000", 4) = 4
[pid 5078] close(3) = 0
[pid 5078] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5078] creat("./bus", 010) = 3
[pid 5078] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5078] memfd_create("syzkaller", 0) = 4
[pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5078] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5078] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5078] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5078] close(4) = 0
[pid 5078] mkdir("./file0", 0777) = 0
[pid 5078] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5078] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5078] chdir("./file0") = 0
[pid 5078] ioctl(5, LOOP_CLR_FD) = 0
[pid 5078] close(5) = 0
[pid 5078] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5078] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5078] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5078] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5078] exit_group(0) = ?
[pid 5078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./26/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./26/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./26/bus") = 0
umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 75.208798][ T5078] loop0: detected capacity change from 0 to 512
[ 75.229554][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 75.242270][ T5078] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/26/file0 supports timestamps until 2038-01-19 (0x7fffffff)
lstat("./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./26/binderfs") = 0
umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./26/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./26/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./26/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./26") = 0
mkdir("./27", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached
, child_tidptr=0x555555be95d0) = 5081
[pid 5081] chdir("./27") = 0
[pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5081] setpgid(0, 0) = 0
[pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5081] write(3, "1000", 4) = 4
[pid 5081] close(3) = 0
[pid 5081] symlink("/dev/binderfs", "./binderfs") = 0
[ 75.300805][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5081] creat("./bus", 010) = 3
[pid 5081] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5081] memfd_create("syzkaller", 0) = 4
[pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5081] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5081] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5081] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5081] close(4) = 0
[pid 5081] mkdir("./file0", 0777) = 0
[pid 5081] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5081] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5081] chdir("./file0") = 0
[pid 5081] ioctl(5, LOOP_CLR_FD) = 0
[pid 5081] close(5) = 0
[pid 5081] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5081] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5081] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5081] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5081] exit_group(0) = ?
[ 75.374749][ T5081] loop0: detected capacity change from 0 to 512
[ 75.399081][ T5081] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 75.411742][ T5081] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/27/file0 supports timestamps until 2038-01-19 (0x7fffffff)
[pid 5081] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./27/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./27/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./27/bus") = 0
umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./27/binderfs") = 0
umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./27/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./27/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./27") = 0
mkdir("./28", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5084
./strace-static-x86_64: Process 5084 attached
[pid 5084] chdir("./28") = 0
[pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5084] setpgid(0, 0) = 0
[pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5084] write(3, "1000", 4) = 4
[pid 5084] close(3) = 0
[pid 5084] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5084] creat("./bus", 010) = 3
[pid 5084] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5084] memfd_create("syzkaller", 0) = 4
[pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5084] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5084] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[ 75.489303][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5084] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5084] close(4) = 0
[pid 5084] mkdir("./file0", 0777) = 0
[ 75.547867][ T5084] loop0: detected capacity change from 0 to 512
[ 75.579296][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[pid 5084] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5084] chdir("./file0") = 0
[pid 5084] ioctl(5, LOOP_CLR_FD) = 0
[pid 5084] close(5) = 0
[pid 5084] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5084] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5084] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5084] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5084] exit_group(0) = ?
[pid 5084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./28/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./28/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./28/bus") = 0
umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./28/binderfs") = 0
[ 75.592215][ T5084] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/28/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./28/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./28/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./28/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./28") = 0
mkdir("./29", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5087
./strace-static-x86_64: Process 5087 attached
[pid 5087] chdir("./29") = 0
[pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5087] setpgid(0, 0) = 0
[pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5087] write(3, "1000", 4) = 4
[pid 5087] close(3) = 0
[pid 5087] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5087] creat("./bus", 010) = 3
[pid 5087] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5087] memfd_create("syzkaller", 0) = 4
[pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5087] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5087] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[ 75.643357][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5087] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5087] close(4) = 0
[pid 5087] mkdir("./file0", 0777) = 0
[pid 5087] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5087] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5087] chdir("./file0") = 0
[pid 5087] ioctl(5, LOOP_CLR_FD) = 0
[pid 5087] close(5) = 0
[pid 5087] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5087] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5087] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5087] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5087] exit_group(0) = ?
[pid 5087] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./29/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./29/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
[ 75.697326][ T5087] loop0: detected capacity change from 0 to 512
[ 75.718828][ T5087] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 75.731434][ T5087] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/29/file0 supports timestamps until 2038-01-19 (0x7fffffff)
unlink("./29/bus") = 0
umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./29/binderfs") = 0
umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./29/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./29/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./29") = 0
mkdir("./30", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 75.788888][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5090
./strace-static-x86_64: Process 5090 attached
[pid 5090] chdir("./30") = 0
[pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5090] setpgid(0, 0) = 0
[pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5090] write(3, "1000", 4) = 4
[pid 5090] close(3) = 0
[pid 5090] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5090] creat("./bus", 010) = 3
[pid 5090] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5090] memfd_create("syzkaller", 0) = 4
[pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5090] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5090] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5090] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5090] close(4) = 0
[pid 5090] mkdir("./file0", 0777) = 0
[pid 5090] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5090] chdir("./file0") = 0
[pid 5090] ioctl(5, LOOP_CLR_FD) = 0
[pid 5090] close(5) = 0
[pid 5090] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5090] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5090] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5090] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5090] exit_group(0) = ?
[pid 5090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./30/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./30/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./30/bus") = 0
umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./30/binderfs") = 0
[ 75.865111][ T5090] loop0: detected capacity change from 0 to 512
[ 75.889361][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 75.902137][ T5090] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/30/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./30/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./30/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./30") = 0
mkdir("./31", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5093
./strace-static-x86_64: Process 5093 attached
[pid 5093] chdir("./31") = 0
[pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5093] setpgid(0, 0) = 0
[pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5093] write(3, "1000", 4) = 4
[pid 5093] close(3) = 0
[pid 5093] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5093] creat("./bus", 010) = 3
[ 75.969440][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5093] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5093] memfd_create("syzkaller", 0) = 4
[pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5093] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5093] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5093] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5093] close(4) = 0
[pid 5093] mkdir("./file0", 0777) = 0
[pid 5093] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5093] chdir("./file0") = 0
[pid 5093] ioctl(5, LOOP_CLR_FD) = 0
[pid 5093] close(5) = 0
[pid 5093] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5093] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5093] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5093] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5093] exit_group(0) = ?
[pid 5093] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[ 76.045546][ T5093] loop0: detected capacity change from 0 to 512
[ 76.069238][ T5093] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
[ 76.081890][ T5093] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/31/file0 supports timestamps until 2038-01-19 (0x7fffffff)
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./31/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./31/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./31/bus") = 0
umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./31/binderfs") = 0
umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./31/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./31/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./31/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./31") = 0
mkdir("./32", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
[ 76.141074][ T4996] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5096
./strace-static-x86_64: Process 5096 attached
[pid 5096] chdir("./32") = 0
[pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5096] setpgid(0, 0) = 0
[pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5096] write(3, "1000", 4) = 4
[pid 5096] close(3) = 0
[pid 5096] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5096] creat("./bus", 010) = 3
[pid 5096] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5096] memfd_create("syzkaller", 0) = 4
[pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5096] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5096] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5096] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5096] close(4) = 0
[pid 5096] mkdir("./file0", 0777) = 0
[pid 5096] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5096] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5096] chdir("./file0") = 0
[pid 5096] ioctl(5, LOOP_CLR_FD) = 0
[pid 5096] close(5) = 0
[pid 5096] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5096] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5096] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5096] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5096] exit_group(0) = ?
[pid 5096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./32/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./32/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./32/bus") = 0
umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./32/binderfs") = 0
[ 76.243940][ T5096] loop0: detected capacity change from 0 to 512
[ 76.269400][ T5096] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/32/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./32/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./32/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./32/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./32") = 0
mkdir("./33", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5099
./strace-static-x86_64: Process 5099 attached
[pid 5099] chdir("./33") = 0
[pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5099] setpgid(0, 0) = 0
[pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5099] write(3, "1000", 4) = 4
[pid 5099] close(3) = 0
[pid 5099] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5099] creat("./bus", 010) = 3
[pid 5099] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5099] memfd_create("syzkaller", 0) = 4
[pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5099] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5099] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5099] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5099] close(4) = 0
[pid 5099] mkdir("./file0", 0777) = 0
[pid 5099] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5099] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5099] chdir("./file0") = 0
[pid 5099] ioctl(5, LOOP_CLR_FD) = 0
[pid 5099] close(5) = 0
[pid 5099] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5099] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5099] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5099] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5099] exit_group(0) = ?
[pid 5099] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./33/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./33/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./33/bus") = 0
umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./33/binderfs") = 0
[ 76.393603][ T5099] loop0: detected capacity change from 0 to 512
[ 76.420602][ T5099] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/33/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./33/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./33/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./33/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./33") = 0
mkdir("./34", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5103
./strace-static-x86_64: Process 5103 attached
[pid 5103] chdir("./34") = 0
[pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5103] setpgid(0, 0) = 0
[pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5103] write(3, "1000", 4) = 4
[pid 5103] close(3) = 0
[pid 5103] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5103] creat("./bus", 010) = 3
[pid 5103] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5103] memfd_create("syzkaller", 0) = 4
[pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5103] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5103] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5103] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5103] close(4) = 0
[pid 5103] mkdir("./file0", 0777) = 0
[pid 5103] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5103] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5103] chdir("./file0") = 0
[pid 5103] ioctl(5, LOOP_CLR_FD) = 0
[pid 5103] close(5) = 0
[pid 5103] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5103] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5103] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5103] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5103] exit_group(0) = ?
[pid 5103] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./34/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./34/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./34/bus") = 0
umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./34/binderfs") = 0
[ 76.602486][ T5103] loop0: detected capacity change from 0 to 512
[ 76.630565][ T5103] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/34/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./34/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./34/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./34/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./34") = 0
mkdir("./35", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5106
./strace-static-x86_64: Process 5106 attached
[pid 5106] chdir("./35") = 0
[pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5106] setpgid(0, 0) = 0
[pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5106] write(3, "1000", 4) = 4
[pid 5106] close(3) = 0
[pid 5106] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5106] creat("./bus", 010) = 3
[pid 5106] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5106] memfd_create("syzkaller", 0) = 4
[pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5106] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5106] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5106] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5106] close(4) = 0
[pid 5106] mkdir("./file0", 0777) = 0
[pid 5106] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5106] chdir("./file0") = 0
[pid 5106] ioctl(5, LOOP_CLR_FD) = 0
[pid 5106] close(5) = 0
[pid 5106] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5106] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5106] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5106] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5106] exit_group(0) = ?
[pid 5106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
[ 76.828499][ T5106] loop0: detected capacity change from 0 to 512
[ 76.851280][ T5106] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/35/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./35/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./35/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./35/bus") = 0
umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./35/binderfs") = 0
umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./35/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./35/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./35/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./35") = 0
mkdir("./36", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5109
./strace-static-x86_64: Process 5109 attached
[pid 5109] chdir("./36") = 0
[pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5109] setpgid(0, 0) = 0
[pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5109] write(3, "1000", 4) = 4
[pid 5109] close(3) = 0
[pid 5109] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5109] creat("./bus", 010) = 3
[pid 5109] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5109] memfd_create("syzkaller", 0) = 4
[pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5109] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5109] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5109] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5109] close(4) = 0
[pid 5109] mkdir("./file0", 0777) = 0
[pid 5109] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5109] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5109] chdir("./file0") = 0
[pid 5109] ioctl(5, LOOP_CLR_FD) = 0
[pid 5109] close(5) = 0
[pid 5109] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5109] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5109] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5109] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5109] exit_group(0) = ?
[pid 5109] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./36/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./36/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./36/bus") = 0
umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./36/binderfs") = 0
[ 77.006428][ T5109] loop0: detected capacity change from 0 to 512
[ 77.029642][ T5109] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/36/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./36/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./36/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./36/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./36") = 0
mkdir("./37", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5112
./strace-static-x86_64: Process 5112 attached
[pid 5112] chdir("./37") = 0
[pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5112] setpgid(0, 0) = 0
[pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5112] write(3, "1000", 4) = 4
[pid 5112] close(3) = 0
[pid 5112] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5112] creat("./bus", 010) = 3
[pid 5112] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5112] memfd_create("syzkaller", 0) = 4
[pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5112] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5112] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5112] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5112] close(4) = 0
[pid 5112] mkdir("./file0", 0777) = 0
[pid 5112] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5112] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5112] chdir("./file0") = 0
[pid 5112] ioctl(5, LOOP_CLR_FD) = 0
[pid 5112] close(5) = 0
[pid 5112] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5112] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5112] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5112] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5112] exit_group(0) = ?
[pid 5112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./37/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 77.129622][ T5112] loop0: detected capacity change from 0 to 512
[ 77.159919][ T5112] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/37/file0 supports timestamps until 2038-01-19 (0x7fffffff)
lstat("./37/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./37/bus") = 0
umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./37/binderfs") = 0
umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./37/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./37/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./37/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./37") = 0
mkdir("./38", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5115
./strace-static-x86_64: Process 5115 attached
[pid 5115] chdir("./38") = 0
[pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5115] setpgid(0, 0) = 0
[pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5115] write(3, "1000", 4) = 4
[pid 5115] close(3) = 0
[pid 5115] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5115] creat("./bus", 010) = 3
[pid 5115] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5115] memfd_create("syzkaller", 0) = 4
[pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5115] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5115] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5115] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5115] close(4) = 0
[pid 5115] mkdir("./file0", 0777) = 0
[pid 5115] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5115] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5115] chdir("./file0") = 0
[pid 5115] ioctl(5, LOOP_CLR_FD) = 0
[pid 5115] close(5) = 0
[pid 5115] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5115] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5115] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5115] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5115] exit_group(0) = ?
[pid 5115] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./38/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./38/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./38/bus") = 0
umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./38/binderfs") = 0
[ 77.311388][ T5115] loop0: detected capacity change from 0 to 512
[ 77.339374][ T5115] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/38/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./38/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./38/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./38/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./38") = 0
mkdir("./39", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5118
./strace-static-x86_64: Process 5118 attached
[pid 5118] chdir("./39") = 0
[pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5118] setpgid(0, 0) = 0
[pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5118] write(3, "1000", 4) = 4
[pid 5118] close(3) = 0
[pid 5118] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5118] creat("./bus", 010) = 3
[pid 5118] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5118] memfd_create("syzkaller", 0) = 4
[pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5118] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5118] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5118] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5118] close(4) = 0
[pid 5118] mkdir("./file0", 0777) = 0
[pid 5118] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5118] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5118] chdir("./file0") = 0
[pid 5118] ioctl(5, LOOP_CLR_FD) = 0
[pid 5118] close(5) = 0
[pid 5118] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5118] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5118] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5118] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5118] exit_group(0) = ?
[pid 5118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
[ 77.474335][ T5118] loop0: detected capacity change from 0 to 512
[ 77.499685][ T5118] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/39/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./39/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./39/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./39/bus") = 0
umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./39/binderfs") = 0
umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./39/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./39/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./39/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./39") = 0
mkdir("./40", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5121
./strace-static-x86_64: Process 5121 attached
[pid 5121] chdir("./40") = 0
[pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5121] setpgid(0, 0) = 0
[pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5121] write(3, "1000", 4) = 4
[pid 5121] close(3) = 0
[pid 5121] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5121] creat("./bus", 010) = 3
[pid 5121] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5121] memfd_create("syzkaller", 0) = 4
[pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5121] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5121] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5121] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5121] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5121] close(4) = 0
[pid 5121] mkdir("./file0", 0777) = 0
[pid 5121] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5121] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5121] chdir("./file0") = 0
[pid 5121] ioctl(5, LOOP_CLR_FD) = 0
[pid 5121] close(5) = 0
[pid 5121] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5121] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5121] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5121] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5121] exit_group(0) = ?
[pid 5121] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5121, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./40/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./40/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./40/bus") = 0
umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./40/binderfs") = 0
[ 77.689863][ T5121] loop0: detected capacity change from 0 to 512
[ 77.710570][ T5121] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/40/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./40/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./40/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./40/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./40") = 0
mkdir("./41", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5124
./strace-static-x86_64: Process 5124 attached
[pid 5124] chdir("./41") = 0
[pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5124] setpgid(0, 0) = 0
[pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5124] write(3, "1000", 4) = 4
[pid 5124] close(3) = 0
[pid 5124] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5124] creat("./bus", 010) = 3
[pid 5124] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5124] memfd_create("syzkaller", 0) = 4
[pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5124] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5124] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5124] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5124] close(4) = 0
[pid 5124] mkdir("./file0", 0777) = 0
[pid 5124] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5124] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5124] chdir("./file0") = 0
[pid 5124] ioctl(5, LOOP_CLR_FD) = 0
[pid 5124] close(5) = 0
[pid 5124] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5124] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5124] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5124] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5124] exit_group(0) = ?
[pid 5124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./41/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./41/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./41/bus") = 0
umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./41/binderfs") = 0
[ 77.822306][ T5124] loop0: detected capacity change from 0 to 512
[ 77.839426][ T5124] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/41/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./41/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./41/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./41/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./41") = 0
mkdir("./42", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5127
./strace-static-x86_64: Process 5127 attached
[pid 5127] chdir("./42") = 0
[pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5127] setpgid(0, 0) = 0
[pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5127] write(3, "1000", 4) = 4
[pid 5127] close(3) = 0
[pid 5127] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5127] creat("./bus", 010) = 3
[pid 5127] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5127] memfd_create("syzkaller", 0) = 4
[pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5127] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5127] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5127] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5127] close(4) = 0
[pid 5127] mkdir("./file0", 0777) = 0
[pid 5127] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5127] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5127] chdir("./file0") = 0
[pid 5127] ioctl(5, LOOP_CLR_FD) = 0
[pid 5127] close(5) = 0
[pid 5127] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5127] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5127] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5127] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5127] exit_group(0) = ?
[pid 5127] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./42/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./42/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./42/bus") = 0
umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./42/binderfs") = 0
[ 77.938211][ T5127] loop0: detected capacity change from 0 to 512
[ 77.959488][ T5127] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/42/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./42/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./42/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./42/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./42") = 0
mkdir("./43", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5130
./strace-static-x86_64: Process 5130 attached
[pid 5130] chdir("./43") = 0
[pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5130] setpgid(0, 0) = 0
[pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5130] write(3, "1000", 4) = 4
[pid 5130] close(3) = 0
[pid 5130] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5130] creat("./bus", 010) = 3
[pid 5130] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5130] memfd_create("syzkaller", 0) = 4
[pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5130] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5130] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5130] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5130] close(4) = 0
[pid 5130] mkdir("./file0", 0777) = 0
[pid 5130] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5130] chdir("./file0") = 0
[pid 5130] ioctl(5, LOOP_CLR_FD) = 0
[pid 5130] close(5) = 0
[pid 5130] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5130] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5130] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5130] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5130] exit_group(0) = ?
[pid 5130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./43/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./43/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./43/bus") = 0
umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./43/binderfs") = 0
[ 78.091538][ T5130] loop0: detected capacity change from 0 to 512
[ 78.110687][ T5130] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/43/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./43/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./43/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./43/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./43") = 0
mkdir("./44", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5133
./strace-static-x86_64: Process 5133 attached
[pid 5133] chdir("./44") = 0
[pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5133] setpgid(0, 0) = 0
[pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5133] write(3, "1000", 4) = 4
[pid 5133] close(3) = 0
[pid 5133] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5133] creat("./bus", 010) = 3
[pid 5133] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5133] memfd_create("syzkaller", 0) = 4
[pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5133] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5133] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5133] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5133] close(4) = 0
[pid 5133] mkdir("./file0", 0777) = 0
[pid 5133] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5133] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5133] chdir("./file0") = 0
[pid 5133] ioctl(5, LOOP_CLR_FD) = 0
[pid 5133] close(5) = 0
[pid 5133] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5133] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5133] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5133] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5133] exit_group(0) = ?
[pid 5133] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./44/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./44/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./44/bus") = 0
umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./44/binderfs") = 0
[ 78.237515][ T5133] loop0: detected capacity change from 0 to 512
[ 78.259644][ T5133] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/44/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./44/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./44/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./44/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./44") = 0
mkdir("./45", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5136
./strace-static-x86_64: Process 5136 attached
[pid 5136] chdir("./45") = 0
[pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5136] setpgid(0, 0) = 0
[pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5136] write(3, "1000", 4) = 4
[pid 5136] close(3) = 0
[pid 5136] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5136] creat("./bus", 010) = 3
[pid 5136] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5136] memfd_create("syzkaller", 0) = 4
[pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5136] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5136] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5136] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5136] close(4) = 0
[pid 5136] mkdir("./file0", 0777) = 0
[pid 5136] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5136] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5136] chdir("./file0") = 0
[pid 5136] ioctl(5, LOOP_CLR_FD) = 0
[pid 5136] close(5) = 0
[pid 5136] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5136] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5136] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5136] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5136] exit_group(0) = ?
[pid 5136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./45/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./45/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./45/bus") = 0
umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./45/binderfs") = 0
[ 78.389125][ T5136] loop0: detected capacity change from 0 to 512
[ 78.409602][ T5136] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/45/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./45/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./45/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./45/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./45") = 0
mkdir("./46", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5139 attached
, child_tidptr=0x555555be95d0) = 5139
[pid 5139] chdir("./46") = 0
[pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5139] setpgid(0, 0) = 0
[pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5139] write(3, "1000", 4) = 4
[pid 5139] close(3) = 0
[pid 5139] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5139] creat("./bus", 010) = 3
[pid 5139] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5139] memfd_create("syzkaller", 0) = 4
[pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5139] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5139] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5139] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5139] close(4) = 0
[pid 5139] mkdir("./file0", 0777) = 0
[pid 5139] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5139] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5139] chdir("./file0") = 0
[pid 5139] ioctl(5, LOOP_CLR_FD) = 0
[pid 5139] close(5) = 0
[pid 5139] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5139] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5139] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5139] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5139] exit_group(0) = ?
[pid 5139] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 78.530163][ T5139] loop0: detected capacity change from 0 to 512
[ 78.559888][ T5139] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/46/file0 supports timestamps until 2038-01-19 (0x7fffffff)
openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./46/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./46/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./46/bus") = 0
umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./46/binderfs") = 0
umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./46/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./46/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./46/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./46") = 0
mkdir("./47", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5142
./strace-static-x86_64: Process 5142 attached
[pid 5142] chdir("./47") = 0
[pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5142] setpgid(0, 0) = 0
[pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5142] write(3, "1000", 4) = 4
[pid 5142] close(3) = 0
[pid 5142] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5142] creat("./bus", 010) = 3
[pid 5142] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5142] memfd_create("syzkaller", 0) = 4
[pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5142] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5142] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5142] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5142] close(4) = 0
[pid 5142] mkdir("./file0", 0777) = 0
[pid 5142] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5142] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5142] chdir("./file0") = 0
[pid 5142] ioctl(5, LOOP_CLR_FD) = 0
[pid 5142] close(5) = 0
[pid 5142] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5142] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5142] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5142] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5142] exit_group(0) = ?
[pid 5142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./47/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./47/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./47/bus") = 0
umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./47/binderfs") = 0
[ 78.671917][ T5142] loop0: detected capacity change from 0 to 512
[ 78.691118][ T5142] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/47/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./47/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./47/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./47/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./47") = 0
mkdir("./48", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5145
./strace-static-x86_64: Process 5145 attached
[pid 5145] chdir("./48") = 0
[pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5145] setpgid(0, 0) = 0
[pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5145] write(3, "1000", 4) = 4
[pid 5145] close(3) = 0
[pid 5145] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5145] creat("./bus", 010) = 3
[pid 5145] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5145] memfd_create("syzkaller", 0) = 4
[pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5145] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5145] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5145] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5145] close(4) = 0
[pid 5145] mkdir("./file0", 0777) = 0
[pid 5145] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5145] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5145] chdir("./file0") = 0
[pid 5145] ioctl(5, LOOP_CLR_FD) = 0
[pid 5145] close(5) = 0
[pid 5145] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5145] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5145] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5145] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5145] exit_group(0) = ?
[pid 5145] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./48/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./48/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./48/bus") = 0
umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./48/binderfs") = 0
[ 78.827177][ T5145] loop0: detected capacity change from 0 to 512
[ 78.849338][ T5145] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/48/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./48/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./48/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./48/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./48") = 0
mkdir("./49", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5148
./strace-static-x86_64: Process 5148 attached
[pid 5148] chdir("./49") = 0
[pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5148] setpgid(0, 0) = 0
[pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5148] write(3, "1000", 4) = 4
[pid 5148] close(3) = 0
[pid 5148] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5148] creat("./bus", 010) = 3
[pid 5148] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5148] memfd_create("syzkaller", 0) = 4
[pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5148] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5148] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5148] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5148] close(4) = 0
[pid 5148] mkdir("./file0", 0777) = 0
[pid 5148] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5148] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5148] chdir("./file0") = 0
[pid 5148] ioctl(5, LOOP_CLR_FD) = 0
[pid 5148] close(5) = 0
[pid 5148] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5148] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5148] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5148] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5148] exit_group(0) = ?
[pid 5148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./49/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./49/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./49/bus") = 0
umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./49/binderfs") = 0
umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[ 78.963199][ T5148] loop0: detected capacity change from 0 to 512
[ 78.979597][ T5148] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/49/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./49/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./49/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./49") = 0
mkdir("./50", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5151
./strace-static-x86_64: Process 5151 attached
[pid 5151] chdir("./50") = 0
[pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5151] setpgid(0, 0) = 0
[pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5151] write(3, "1000", 4) = 4
[pid 5151] close(3) = 0
[pid 5151] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5151] creat("./bus", 010) = 3
[pid 5151] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5151] memfd_create("syzkaller", 0) = 4
[pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5151] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5151] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5151] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5151] close(4) = 0
[pid 5151] mkdir("./file0", 0777) = 0
[pid 5151] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5151] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5151] chdir("./file0") = 0
[pid 5151] ioctl(5, LOOP_CLR_FD) = 0
[pid 5151] close(5) = 0
[pid 5151] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5151] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5151] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5151] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5151] exit_group(0) = ?
[pid 5151] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./50/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./50/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./50/bus") = 0
umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./50/binderfs") = 0
umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./50/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
[ 79.083917][ T5151] loop0: detected capacity change from 0 to 512
[ 79.100095][ T5151] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/50/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./50/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./50/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./50") = 0
mkdir("./51", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5154
./strace-static-x86_64: Process 5154 attached
[pid 5154] chdir("./51") = 0
[pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5154] setpgid(0, 0) = 0
[pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5154] write(3, "1000", 4) = 4
[pid 5154] close(3) = 0
[pid 5154] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5154] creat("./bus", 010) = 3
[pid 5154] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5154] memfd_create("syzkaller", 0) = 4
[pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5154] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5154] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5154] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5154] close(4) = 0
[pid 5154] mkdir("./file0", 0777) = 0
[pid 5154] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5154] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5154] chdir("./file0") = 0
[pid 5154] ioctl(5, LOOP_CLR_FD) = 0
[pid 5154] close(5) = 0
[pid 5154] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5154] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5154] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5154] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5154] exit_group(0) = ?
[pid 5154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./51/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./51/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./51/bus") = 0
umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./51/binderfs") = 0
[ 79.221314][ T5154] loop0: detected capacity change from 0 to 512
[ 79.240203][ T5154] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/51/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./51/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./51/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./51/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./51") = 0
mkdir("./52", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5157
./strace-static-x86_64: Process 5157 attached
[pid 5157] chdir("./52") = 0
[pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5157] setpgid(0, 0) = 0
[pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5157] write(3, "1000", 4) = 4
[pid 5157] close(3) = 0
[pid 5157] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5157] creat("./bus", 010) = 3
[pid 5157] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5157] memfd_create("syzkaller", 0) = 4
[pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5157] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5157] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5157] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5157] close(4) = 0
[pid 5157] mkdir("./file0", 0777) = 0
[pid 5157] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5157] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5157] chdir("./file0") = 0
[pid 5157] ioctl(5, LOOP_CLR_FD) = 0
[pid 5157] close(5) = 0
[pid 5157] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5157] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5157] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5157] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5157] exit_group(0) = ?
[pid 5157] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./52/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./52/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./52/bus") = 0
umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./52/binderfs") = 0
[ 79.370960][ T5157] loop0: detected capacity change from 0 to 512
[ 79.390029][ T5157] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/52/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./52/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./52/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./52/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./52") = 0
mkdir("./53", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5160
./strace-static-x86_64: Process 5160 attached
[pid 5160] chdir("./53") = 0
[pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5160] setpgid(0, 0) = 0
[pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5160] write(3, "1000", 4) = 4
[pid 5160] close(3) = 0
[pid 5160] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5160] creat("./bus", 010) = 3
[pid 5160] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5160] memfd_create("syzkaller", 0) = 4
[pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5160] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5160] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5160] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5160] close(4) = 0
[pid 5160] mkdir("./file0", 0777) = 0
[pid 5160] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5160] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5160] chdir("./file0") = 0
[pid 5160] ioctl(5, LOOP_CLR_FD) = 0
[pid 5160] close(5) = 0
[pid 5160] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5160] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5160] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5160] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5160] exit_group(0) = ?
[pid 5160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./53/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./53/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./53/bus") = 0
umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./53/binderfs") = 0
[ 79.500146][ T5160] loop0: detected capacity change from 0 to 512
[ 79.519193][ T5160] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/53/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./53/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./53/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./53/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./53") = 0
mkdir("./54", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5163
./strace-static-x86_64: Process 5163 attached
[pid 5163] chdir("./54") = 0
[pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5163] setpgid(0, 0) = 0
[pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5163] write(3, "1000", 4) = 4
[pid 5163] close(3) = 0
[pid 5163] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5163] creat("./bus", 010) = 3
[pid 5163] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5163] memfd_create("syzkaller", 0) = 4
[pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5163] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5163] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5163] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5163] close(4) = 0
[pid 5163] mkdir("./file0", 0777) = 0
[pid 5163] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5163] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5163] chdir("./file0") = 0
[pid 5163] ioctl(5, LOOP_CLR_FD) = 0
[pid 5163] close(5) = 0
[pid 5163] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5163] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5163] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5163] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5163] exit_group(0) = ?
[pid 5163] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./54/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./54/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./54/bus") = 0
umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./54/binderfs") = 0
[ 79.627012][ T5163] loop0: detected capacity change from 0 to 512
[ 79.649201][ T5163] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/54/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./54/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./54/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./54/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./54") = 0
mkdir("./55", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5166
./strace-static-x86_64: Process 5166 attached
[pid 5166] chdir("./55") = 0
[pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5166] setpgid(0, 0) = 0
[pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5166] write(3, "1000", 4) = 4
[pid 5166] close(3) = 0
[pid 5166] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5166] creat("./bus", 010) = 3
[pid 5166] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5166] memfd_create("syzkaller", 0) = 4
[pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5166] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5166] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5166] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5166] close(4) = 0
[pid 5166] mkdir("./file0", 0777) = 0
[pid 5166] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5166] chdir("./file0") = 0
[pid 5166] ioctl(5, LOOP_CLR_FD) = 0
[pid 5166] close(5) = 0
[pid 5166] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5166] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5166] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5166] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5166] exit_group(0) = ?
[pid 5166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./55/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./55/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./55/bus") = 0
umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./55/binderfs") = 0
[ 79.776680][ T5166] loop0: detected capacity change from 0 to 512
[ 79.799100][ T5166] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/55/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./55/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./55/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./55/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./55") = 0
mkdir("./56", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5169
./strace-static-x86_64: Process 5169 attached
[pid 5169] chdir("./56") = 0
[pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5169] setpgid(0, 0) = 0
[pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5169] write(3, "1000", 4) = 4
[pid 5169] close(3) = 0
[pid 5169] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5169] creat("./bus", 010) = 3
[pid 5169] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5169] memfd_create("syzkaller", 0) = 4
[pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5169] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5169] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5169] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5169] close(4) = 0
[pid 5169] mkdir("./file0", 0777) = 0
[pid 5169] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5169] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5169] chdir("./file0") = 0
[pid 5169] ioctl(5, LOOP_CLR_FD) = 0
[pid 5169] close(5) = 0
[pid 5169] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5169] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5169] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5169] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5169] exit_group(0) = ?
[pid 5169] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./56/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./56/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./56/bus") = 0
umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./56/binderfs") = 0
[ 79.923436][ T5169] loop0: detected capacity change from 0 to 512
[ 79.939968][ T5169] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/56/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./56/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./56/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./56/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./56") = 0
mkdir("./57", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5172
./strace-static-x86_64: Process 5172 attached
[pid 5172] chdir("./57") = 0
[pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5172] setpgid(0, 0) = 0
[pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5172] write(3, "1000", 4) = 4
[pid 5172] close(3) = 0
[pid 5172] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5172] creat("./bus", 010) = 3
[pid 5172] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5172] memfd_create("syzkaller", 0) = 4
[pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5172] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5172] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5172] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5172] close(4) = 0
[pid 5172] mkdir("./file0", 0777) = 0
[pid 5172] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5172] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5172] chdir("./file0") = 0
[pid 5172] ioctl(5, LOOP_CLR_FD) = 0
[pid 5172] close(5) = 0
[pid 5172] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5172] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5172] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5172] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5172] exit_group(0) = ?
[pid 5172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./57/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./57/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./57/bus") = 0
umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./57/binderfs") = 0
[ 80.069602][ T5172] loop0: detected capacity change from 0 to 512
[ 80.089890][ T5172] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/57/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./57/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./57/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./57/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./57") = 0
mkdir("./58", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5175
./strace-static-x86_64: Process 5175 attached
[pid 5175] chdir("./58") = 0
[pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5175] setpgid(0, 0) = 0
[pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5175] write(3, "1000", 4) = 4
[pid 5175] close(3) = 0
[pid 5175] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5175] creat("./bus", 010) = 3
[pid 5175] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5175] memfd_create("syzkaller", 0) = 4
[pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5175] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5175] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5175] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5175] close(4) = 0
[pid 5175] mkdir("./file0", 0777) = 0
[pid 5175] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5175] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5175] chdir("./file0") = 0
[pid 5175] ioctl(5, LOOP_CLR_FD) = 0
[pid 5175] close(5) = 0
[pid 5175] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5175] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5175] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5175] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5175] exit_group(0) = ?
[pid 5175] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./58/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./58/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./58/bus") = 0
umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./58/binderfs") = 0
[ 80.189391][ T5175] loop0: detected capacity change from 0 to 512
[ 80.209893][ T5175] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/58/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./58/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./58/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./58/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./58") = 0
mkdir("./59", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5178
./strace-static-x86_64: Process 5178 attached
[pid 5178] chdir("./59") = 0
[pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5178] setpgid(0, 0) = 0
[pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5178] write(3, "1000", 4) = 4
[pid 5178] close(3) = 0
[pid 5178] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5178] creat("./bus", 010) = 3
[pid 5178] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5178] memfd_create("syzkaller", 0) = 4
[pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5178] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5178] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5178] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5178] close(4) = 0
[pid 5178] mkdir("./file0", 0777) = 0
[pid 5178] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5178] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5178] chdir("./file0") = 0
[pid 5178] ioctl(5, LOOP_CLR_FD) = 0
[pid 5178] close(5) = 0
[pid 5178] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5178] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5178] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5178] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5178] exit_group(0) = ?
[pid 5178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./59/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./59/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./59/bus") = 0
umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./59/binderfs") = 0
[ 80.319768][ T5178] loop0: detected capacity change from 0 to 512
[ 80.339785][ T5178] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/59/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./59/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./59/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./59/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./59") = 0
mkdir("./60", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5181
./strace-static-x86_64: Process 5181 attached
[pid 5181] chdir("./60") = 0
[pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5181] setpgid(0, 0) = 0
[pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5181] write(3, "1000", 4) = 4
[pid 5181] close(3) = 0
[pid 5181] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5181] creat("./bus", 010) = 3
[pid 5181] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5181] memfd_create("syzkaller", 0) = 4
[pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5181] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5181] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5181] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5181] close(4) = 0
[pid 5181] mkdir("./file0", 0777) = 0
[pid 5181] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5181] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5181] chdir("./file0") = 0
[pid 5181] ioctl(5, LOOP_CLR_FD) = 0
[pid 5181] close(5) = 0
[pid 5181] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5181] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5181] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5181] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5181] exit_group(0) = ?
[pid 5181] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./60/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./60/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./60/bus") = 0
umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./60/binderfs") = 0
[ 80.441687][ T5181] loop0: detected capacity change from 0 to 512
[ 80.462076][ T5181] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/60/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./60/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./60/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./60/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./60") = 0
mkdir("./61", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5184
./strace-static-x86_64: Process 5184 attached
[pid 5184] chdir("./61") = 0
[pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5184] setpgid(0, 0) = 0
[pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5184] write(3, "1000", 4) = 4
[pid 5184] close(3) = 0
[pid 5184] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5184] creat("./bus", 010) = 3
[pid 5184] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5184] memfd_create("syzkaller", 0) = 4
[pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5184] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5184] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5184] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5184] close(4) = 0
[pid 5184] mkdir("./file0", 0777) = 0
[pid 5184] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5184] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5184] chdir("./file0") = 0
[pid 5184] ioctl(5, LOOP_CLR_FD) = 0
[pid 5184] close(5) = 0
[pid 5184] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5184] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5184] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5184] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5184] exit_group(0) = ?
[pid 5184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./61/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./61/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./61/bus") = 0
umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./61/binderfs") = 0
[ 80.566277][ T5184] loop0: detected capacity change from 0 to 512
[ 80.589324][ T5184] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/61/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./61/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./61/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./61/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./61") = 0
mkdir("./62", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5187
./strace-static-x86_64: Process 5187 attached
[pid 5187] chdir("./62") = 0
[pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5187] setpgid(0, 0) = 0
[pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5187] write(3, "1000", 4) = 4
[pid 5187] close(3) = 0
[pid 5187] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5187] creat("./bus", 010) = 3
[pid 5187] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5187] memfd_create("syzkaller", 0) = 4
[pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5187] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5187] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5187] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5187] close(4) = 0
[pid 5187] mkdir("./file0", 0777) = 0
[pid 5187] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5187] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5187] chdir("./file0") = 0
[pid 5187] ioctl(5, LOOP_CLR_FD) = 0
[pid 5187] close(5) = 0
[pid 5187] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5187] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5187] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5187] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5187] exit_group(0) = ?
[pid 5187] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./62/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./62/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./62/bus") = 0
umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./62/binderfs") = 0
[ 80.707564][ T5187] loop0: detected capacity change from 0 to 512
[ 80.728968][ T5187] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/62/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./62/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./62/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./62/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./62") = 0
mkdir("./63", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5190
./strace-static-x86_64: Process 5190 attached
[pid 5190] chdir("./63") = 0
[pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5190] setpgid(0, 0) = 0
[pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5190] write(3, "1000", 4) = 4
[pid 5190] close(3) = 0
[pid 5190] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5190] creat("./bus", 010) = 3
[pid 5190] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5190] memfd_create("syzkaller", 0) = 4
[pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5190] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5190] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5190] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5190] close(4) = 0
[pid 5190] mkdir("./file0", 0777) = 0
[pid 5190] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5190] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5190] chdir("./file0") = 0
[pid 5190] ioctl(5, LOOP_CLR_FD) = 0
[pid 5190] close(5) = 0
[pid 5190] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5190] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5190] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5190] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5190] exit_group(0) = ?
[pid 5190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./63", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./63/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./63/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./63/bus") = 0
umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./63/binderfs") = 0
[ 80.862640][ T5190] loop0: detected capacity change from 0 to 512
[ 80.879331][ T5190] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/63/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./63/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./63/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./63/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./63") = 0
mkdir("./64", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5193
./strace-static-x86_64: Process 5193 attached
[pid 5193] chdir("./64") = 0
[pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5193] setpgid(0, 0) = 0
[pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5193] write(3, "1000", 4) = 4
[pid 5193] close(3) = 0
[pid 5193] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5193] creat("./bus", 010) = 3
[pid 5193] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5193] memfd_create("syzkaller", 0) = 4
[pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5193] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5193] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5193] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5193] close(4) = 0
[pid 5193] mkdir("./file0", 0777) = 0
[pid 5193] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5193] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5193] chdir("./file0") = 0
[pid 5193] ioctl(5, LOOP_CLR_FD) = 0
[pid 5193] close(5) = 0
[pid 5193] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5193] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5193] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5193] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5193] exit_group(0) = ?
[pid 5193] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./64/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./64/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./64/bus") = 0
umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./64/binderfs") = 0
[ 80.979963][ T5193] loop0: detected capacity change from 0 to 512
[ 81.000525][ T5193] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/64/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./64/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./64/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./64/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./64") = 0
mkdir("./65", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5196
./strace-static-x86_64: Process 5196 attached
[pid 5196] chdir("./65") = 0
[pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5196] setpgid(0, 0) = 0
[pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5196] write(3, "1000", 4) = 4
[pid 5196] close(3) = 0
[pid 5196] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5196] creat("./bus", 010) = 3
[pid 5196] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5196] memfd_create("syzkaller", 0) = 4
[pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5196] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5196] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5196] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5196] close(4) = 0
[pid 5196] mkdir("./file0", 0777) = 0
[pid 5196] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5196] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5196] chdir("./file0") = 0
[pid 5196] ioctl(5, LOOP_CLR_FD) = 0
[pid 5196] close(5) = 0
[pid 5196] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5196] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5196] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5196] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5196] exit_group(0) = ?
[pid 5196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./65", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./65/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./65/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./65/bus") = 0
umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./65/binderfs") = 0
[ 81.118493][ T5196] loop0: detected capacity change from 0 to 512
[ 81.138823][ T5196] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/65/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./65/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./65/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./65/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./65") = 0
mkdir("./66", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5199
./strace-static-x86_64: Process 5199 attached
[pid 5199] chdir("./66") = 0
[pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5199] setpgid(0, 0) = 0
[pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5199] write(3, "1000", 4) = 4
[pid 5199] close(3) = 0
[pid 5199] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5199] creat("./bus", 010) = 3
[pid 5199] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5199] memfd_create("syzkaller", 0) = 4
[pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5199] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5199] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5199] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5199] close(4) = 0
[pid 5199] mkdir("./file0", 0777) = 0
[pid 5199] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5199] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5199] chdir("./file0") = 0
[pid 5199] ioctl(5, LOOP_CLR_FD) = 0
[pid 5199] close(5) = 0
[pid 5199] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5199] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5199] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5199] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5199] exit_group(0) = ?
[pid 5199] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./66/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./66/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./66/bus") = 0
umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./66/binderfs") = 0
[ 81.263688][ T5199] loop0: detected capacity change from 0 to 512
[ 81.279503][ T5199] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/66/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./66/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./66/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./66/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./66") = 0
mkdir("./67", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5202
./strace-static-x86_64: Process 5202 attached
[pid 5202] chdir("./67") = 0
[pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5202] setpgid(0, 0) = 0
[pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5202] write(3, "1000", 4) = 4
[pid 5202] close(3) = 0
[pid 5202] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5202] creat("./bus", 010) = 3
[pid 5202] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5202] memfd_create("syzkaller", 0) = 4
[pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5202] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5202] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5202] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5202] close(4) = 0
[pid 5202] mkdir("./file0", 0777) = 0
[pid 5202] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5202] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5202] chdir("./file0") = 0
[pid 5202] ioctl(5, LOOP_CLR_FD) = 0
[pid 5202] close(5) = 0
[pid 5202] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5202] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5202] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5202] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5202] exit_group(0) = ?
[pid 5202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./67/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./67/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./67/bus") = 0
umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./67/binderfs") = 0
[ 81.399044][ T5202] loop0: detected capacity change from 0 to 512
[ 81.419380][ T5202] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/67/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./67/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./67/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./67/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./67") = 0
mkdir("./68", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5205
./strace-static-x86_64: Process 5205 attached
[pid 5205] chdir("./68") = 0
[pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5205] setpgid(0, 0) = 0
[pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5205] write(3, "1000", 4) = 4
[pid 5205] close(3) = 0
[pid 5205] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5205] creat("./bus", 010) = 3
[pid 5205] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5205] memfd_create("syzkaller", 0) = 4
[pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5205] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5205] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5205] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5205] close(4) = 0
[pid 5205] mkdir("./file0", 0777) = 0
[ 81.527741][ T7] cfg80211: failed to load regulatory.db
[ 81.561906][ T5205] loop0: detected capacity change from 0 to 512
[pid 5205] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5205] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5205] chdir("./file0") = 0
[pid 5205] ioctl(5, LOOP_CLR_FD) = 0
[pid 5205] close(5) = 0
[pid 5205] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5205] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5205] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5205] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5205] exit_group(0) = ?
[pid 5205] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./68/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./68/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./68/bus") = 0
umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./68/binderfs") = 0
[ 81.579029][ T5205] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/68/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./68/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./68/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./68/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./68") = 0
mkdir("./69", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5209
./strace-static-x86_64: Process 5209 attached
[pid 5209] chdir("./69") = 0
[pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5209] setpgid(0, 0) = 0
[pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5209] write(3, "1000", 4) = 4
[pid 5209] close(3) = 0
[pid 5209] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5209] creat("./bus", 010) = 3
[pid 5209] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5209] memfd_create("syzkaller", 0) = 4
[pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5209] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5209] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5209] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5209] close(4) = 0
[pid 5209] mkdir("./file0", 0777) = 0
[pid 5209] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5209] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5209] chdir("./file0") = 0
[pid 5209] ioctl(5, LOOP_CLR_FD) = 0
[pid 5209] close(5) = 0
[pid 5209] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5209] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5209] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5209] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5209] exit_group(0) = ?
[pid 5209] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./69/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./69/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./69/bus") = 0
umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./69/binderfs") = 0
[ 81.716903][ T5209] loop0: detected capacity change from 0 to 512
[ 81.739472][ T5209] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/69/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./69/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./69/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./69/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./69") = 0
mkdir("./70", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5212 attached
, child_tidptr=0x555555be95d0) = 5212
[pid 5212] chdir("./70") = 0
[pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5212] setpgid(0, 0) = 0
[pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5212] write(3, "1000", 4) = 4
[pid 5212] close(3) = 0
[pid 5212] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5212] creat("./bus", 010) = 3
[pid 5212] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5212] memfd_create("syzkaller", 0) = 4
[pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5212] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5212] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5212] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5212] close(4) = 0
[pid 5212] mkdir("./file0", 0777) = 0
[pid 5212] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5212] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5212] chdir("./file0") = 0
[pid 5212] ioctl(5, LOOP_CLR_FD) = 0
[pid 5212] close(5) = 0
[pid 5212] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5212] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5212] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5212] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5212] exit_group(0) = ?
[pid 5212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./70/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./70/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./70/bus") = 0
umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./70/binderfs") = 0
[ 81.877088][ T5212] loop0: detected capacity change from 0 to 512
[ 81.900029][ T5212] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/70/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./70/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./70/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./70/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./70") = 0
mkdir("./71", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5215
./strace-static-x86_64: Process 5215 attached
[pid 5215] chdir("./71") = 0
[pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5215] setpgid(0, 0) = 0
[pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5215] write(3, "1000", 4) = 4
[pid 5215] close(3) = 0
[pid 5215] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5215] creat("./bus", 010) = 3
[pid 5215] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5215] memfd_create("syzkaller", 0) = 4
[pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5215] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5215] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5215] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5215] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5215] close(4) = 0
[pid 5215] mkdir("./file0", 0777) = 0
[pid 5215] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5215] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5215] chdir("./file0") = 0
[pid 5215] ioctl(5, LOOP_CLR_FD) = 0
[pid 5215] close(5) = 0
[pid 5215] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5215] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5215] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5215] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5215] exit_group(0) = ?
[pid 5215] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./71", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./71/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./71/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./71/bus") = 0
umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./71/binderfs") = 0
[ 82.042973][ T5215] loop0: detected capacity change from 0 to 512
[ 82.059941][ T5215] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/71/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./71/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./71/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./71/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./71") = 0
mkdir("./72", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5219
./strace-static-x86_64: Process 5219 attached
[pid 5219] chdir("./72") = 0
[pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5219] setpgid(0, 0) = 0
[pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5219] write(3, "1000", 4) = 4
[pid 5219] close(3) = 0
[pid 5219] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5219] creat("./bus", 010) = 3
[pid 5219] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5219] memfd_create("syzkaller", 0) = 4
[pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5219] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5219] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5219] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5219] close(4) = 0
[pid 5219] mkdir("./file0", 0777) = 0
[pid 5219] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5219] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5219] chdir("./file0") = 0
[pid 5219] ioctl(5, LOOP_CLR_FD) = 0
[pid 5219] close(5) = 0
[pid 5219] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5219] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5219] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5219] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5219] exit_group(0) = ?
[pid 5219] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5219, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./72/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./72/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./72/bus") = 0
umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./72/binderfs") = 0
[ 82.163698][ T5219] loop0: detected capacity change from 0 to 512
[ 82.180022][ T5219] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/72/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./72/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./72/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./72/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./72") = 0
mkdir("./73", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5222
./strace-static-x86_64: Process 5222 attached
[pid 5222] chdir("./73") = 0
[pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5222] setpgid(0, 0) = 0
[pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5222] write(3, "1000", 4) = 4
[pid 5222] close(3) = 0
[pid 5222] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5222] creat("./bus", 010) = 3
[pid 5222] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5222] memfd_create("syzkaller", 0) = 4
[pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5222] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5222] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5222] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5222] close(4) = 0
[pid 5222] mkdir("./file0", 0777) = 0
[pid 5222] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5222] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5222] chdir("./file0") = 0
[pid 5222] ioctl(5, LOOP_CLR_FD) = 0
[pid 5222] close(5) = 0
[pid 5222] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5222] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5222] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5222] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5222] exit_group(0) = ?
[pid 5222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5222, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./73", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./73/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./73/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./73/bus") = 0
umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./73/binderfs") = 0
[ 82.296054][ T5222] loop0: detected capacity change from 0 to 512
[ 82.319241][ T5222] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/73/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./73/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./73/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./73/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./73") = 0
mkdir("./74", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5225 attached
, child_tidptr=0x555555be95d0) = 5225
[pid 5225] chdir("./74") = 0
[pid 5225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5225] setpgid(0, 0) = 0
[pid 5225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5225] write(3, "1000", 4) = 4
[pid 5225] close(3) = 0
[pid 5225] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5225] creat("./bus", 010) = 3
[pid 5225] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5225] memfd_create("syzkaller", 0) = 4
[pid 5225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5225] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5225] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5225] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5225] close(4) = 0
[pid 5225] mkdir("./file0", 0777) = 0
[pid 5225] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5225] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5225] chdir("./file0") = 0
[pid 5225] ioctl(5, LOOP_CLR_FD) = 0
[pid 5225] close(5) = 0
[pid 5225] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5225] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5225] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5225] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5225] exit_group(0) = ?
[pid 5225] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5225, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./74", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./74/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./74/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./74/bus") = 0
umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./74/binderfs") = 0
umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 82.444165][ T5225] loop0: detected capacity change from 0 to 512
[ 82.459019][ T5225] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/74/file0 supports timestamps until 2038-01-19 (0x7fffffff)
lstat("./74/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./74/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./74/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./74") = 0
mkdir("./75", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5228
./strace-static-x86_64: Process 5228 attached
[pid 5228] chdir("./75") = 0
[pid 5228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5228] setpgid(0, 0) = 0
[pid 5228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5228] write(3, "1000", 4) = 4
[pid 5228] close(3) = 0
[pid 5228] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5228] creat("./bus", 010) = 3
[pid 5228] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5228] memfd_create("syzkaller", 0) = 4
[pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5228] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5228] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5228] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5228] close(4) = 0
[pid 5228] mkdir("./file0", 0777) = 0
[pid 5228] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5228] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5228] chdir("./file0") = 0
[pid 5228] ioctl(5, LOOP_CLR_FD) = 0
[pid 5228] close(5) = 0
[pid 5228] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5228] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5228] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5228] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5228] exit_group(0) = ?
[pid 5228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5228, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./75/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./75/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./75/bus") = 0
umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./75/binderfs") = 0
[ 82.570318][ T5228] loop0: detected capacity change from 0 to 512
[ 82.589300][ T5228] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/75/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./75/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./75/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./75/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./75") = 0
mkdir("./76", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5231
./strace-static-x86_64: Process 5231 attached
[pid 5231] chdir("./76") = 0
[pid 5231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5231] setpgid(0, 0) = 0
[pid 5231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5231] write(3, "1000", 4) = 4
[pid 5231] close(3) = 0
[pid 5231] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5231] creat("./bus", 010) = 3
[pid 5231] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5231] memfd_create("syzkaller", 0) = 4
[pid 5231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5231] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5231] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5231] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5231] close(4) = 0
[pid 5231] mkdir("./file0", 0777) = 0
[pid 5231] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5231] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5231] chdir("./file0") = 0
[pid 5231] ioctl(5, LOOP_CLR_FD) = 0
[pid 5231] close(5) = 0
[pid 5231] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5231] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5231] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5231] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5231] exit_group(0) = ?
[pid 5231] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5231, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./76/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./76/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./76/bus") = 0
umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
[ 82.707338][ T5231] loop0: detected capacity change from 0 to 512
[ 82.731107][ T5231] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/76/file0 supports timestamps until 2038-01-19 (0x7fffffff)
unlink("./76/binderfs") = 0
umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./76/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./76/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./76/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./76") = 0
mkdir("./77", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5234 attached
, child_tidptr=0x555555be95d0) = 5234
[pid 5234] chdir("./77") = 0
[pid 5234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5234] setpgid(0, 0) = 0
[pid 5234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5234] write(3, "1000", 4) = 4
[pid 5234] close(3) = 0
[pid 5234] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5234] creat("./bus", 010) = 3
[pid 5234] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5234] memfd_create("syzkaller", 0) = 4
[pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5234] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5234] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5234] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5234] close(4) = 0
[pid 5234] mkdir("./file0", 0777) = 0
[pid 5234] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5234] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5234] chdir("./file0") = 0
[pid 5234] ioctl(5, LOOP_CLR_FD) = 0
[pid 5234] close(5) = 0
[pid 5234] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5234] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5234] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5234] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5234] exit_group(0) = ?
[pid 5234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5234, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./77/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./77/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./77/bus") = 0
umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./77/binderfs") = 0
[ 82.894477][ T5234] loop0: detected capacity change from 0 to 512
[ 82.909692][ T5234] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/77/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./77/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./77/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./77/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./77") = 0
mkdir("./78", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5237
./strace-static-x86_64: Process 5237 attached
[pid 5237] chdir("./78") = 0
[pid 5237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5237] setpgid(0, 0) = 0
[pid 5237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5237] write(3, "1000", 4) = 4
[pid 5237] close(3) = 0
[pid 5237] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5237] creat("./bus", 010) = 3
[pid 5237] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5237] memfd_create("syzkaller", 0) = 4
[pid 5237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5237] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5237] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5237] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5237] close(4) = 0
[pid 5237] mkdir("./file0", 0777) = 0
[pid 5237] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5237] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5237] chdir("./file0") = 0
[pid 5237] ioctl(5, LOOP_CLR_FD) = 0
[pid 5237] close(5) = 0
[pid 5237] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5237] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5237] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5237] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5237] exit_group(0) = ?
[pid 5237] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5237, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./78/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./78/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./78/bus") = 0
umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./78/binderfs") = 0
[ 83.019736][ T5237] loop0: detected capacity change from 0 to 512
[ 83.048912][ T5237] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/78/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./78/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./78/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./78/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./78") = 0
mkdir("./79", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5240
./strace-static-x86_64: Process 5240 attached
[pid 5240] chdir("./79") = 0
[pid 5240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5240] setpgid(0, 0) = 0
[pid 5240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5240] write(3, "1000", 4) = 4
[pid 5240] close(3) = 0
[pid 5240] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5240] creat("./bus", 010) = 3
[pid 5240] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5240] memfd_create("syzkaller", 0) = 4
[pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5240] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5240] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5240] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5240] close(4) = 0
[pid 5240] mkdir("./file0", 0777) = 0
[pid 5240] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5240] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5240] chdir("./file0") = 0
[pid 5240] ioctl(5, LOOP_CLR_FD) = 0
[pid 5240] close(5) = 0
[pid 5240] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5240] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5240] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5240] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5240] exit_group(0) = ?
[pid 5240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5240, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./79/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./79/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./79/bus") = 0
umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./79/binderfs") = 0
[ 83.175704][ T5240] loop0: detected capacity change from 0 to 512
[ 83.199979][ T5240] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/79/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./79/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./79/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./79/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./79") = 0
mkdir("./80", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5243
./strace-static-x86_64: Process 5243 attached
[pid 5243] chdir("./80") = 0
[pid 5243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5243] setpgid(0, 0) = 0
[pid 5243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5243] write(3, "1000", 4) = 4
[pid 5243] close(3) = 0
[pid 5243] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5243] creat("./bus", 010) = 3
[pid 5243] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5243] memfd_create("syzkaller", 0) = 4
[pid 5243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5243] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5243] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5243] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5243] close(4) = 0
[pid 5243] mkdir("./file0", 0777) = 0
[pid 5243] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5243] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5243] chdir("./file0") = 0
[pid 5243] ioctl(5, LOOP_CLR_FD) = 0
[pid 5243] close(5) = 0
[pid 5243] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5243] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5243] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5243] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5243] exit_group(0) = ?
[pid 5243] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5243, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
umount2("./80/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./80/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./80/bus") = 0
umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./80/binderfs") = 0
[ 83.300531][ T5243] loop0: detected capacity change from 0 to 512
[ 83.321207][ T5243] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/80/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./80/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./80/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./80/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./80") = 0
mkdir("./81", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5246
./strace-static-x86_64: Process 5246 attached
[pid 5246] chdir("./81") = 0
[pid 5246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5246] setpgid(0, 0) = 0
[pid 5246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5246] write(3, "1000", 4) = 4
[pid 5246] close(3) = 0
[pid 5246] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5246] creat("./bus", 010) = 3
[pid 5246] ioctl(3, _IOC(_IOC_NONE, 0x66, 0x11, 0), 0) = 0
[pid 5246] memfd_create("syzkaller", 0) = 4
[pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc6c5b06000
[pid 5246] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144
[pid 5246] munmap(0x7fc6c5b06000, 262144) = 0
[pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5
[pid 5246] ioctl(5, LOOP_SET_FD, 4) = 0
[pid 5246] close(4) = 0
[pid 5246] mkdir("./file0", 0777) = 0
[pid 5246] mount("/dev/loop0", "./file0", "ext4", 0, ",errors=continue") = 0
[pid 5246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 4
[pid 5246] chdir("./file0") = 0
[pid 5246] ioctl(5, LOOP_CLR_FD) = 0
[pid 5246] close(5) = 0
[pid 5246] mkdirat(AT_FDCWD, "./bus", 000) = 0
[pid 5246] mkdirat(AT_FDCWD, "./bus/file0", 000) = 0
[pid 5246] setxattr("./bus/file0", "security.apparmor", "\x6f\x76\x65\x72\x6c\x61\x79\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x73\x65\x63\x75\x72\x69\x74\x79\x2e\x61\x70\x70\x61\x72\x6d\x6f\x72\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 58375, 0) = 0
[pid 5246] unshare(CLONE_FS|0x1000) = -1 EINVAL (Invalid argument)
[pid 5246] exit_group(0) = ?
[pid 5246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5246, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555bea620 /* 5 entries */, 32768) = 136
[ 83.457333][ T5246] loop0: detected capacity change from 0 to 512
[ 83.489379][ T5246] ext4 filesystem being mounted at /root/syzkaller.a9xWDY/81/file0 supports timestamps until 2038-01-19 (0x7fffffff)
umount2("./81/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./81/bus", {st_mode=S_IFREG|000, st_size=0, ...}) = 0
unlink("./81/bus") = 0
umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./81/binderfs") = 0
umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./81/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./81/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555bf2660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555bf2660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./81/file0") = 0
getdents64(3, 0x555555bea620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./81") = 0
mkdir("./82", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555be95d0) = 5249
./strace-static-x86_64: Process 5249 attached
[pid 5249] chdir("./82") = 0
[pid 5249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5249] setpgid(0, 0) = 0
[pid 5249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5249] write(3, "1000", 4) = 4
[pid 5249] close(3) = 0
[pid 5249] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5249] creat("./bus", 010) = 3
[ 83.589856][ T5249] ------------[ cut here ]------------
[ 83.595356][ T5249] Looking for class "&ei->i_data_sem" with key init_once.__key.780, but found a different class "&ei->i_data_sem" with the same key
[ 83.608990][ T5249] WARNING: CPU: 1 PID: 5249 at kernel/locking/lockdep.c:941 look_up_lock_class+0xc2/0x140
[ 83.618911][ T5249] Modules linked in:
[ 83.622805][ T5249] CPU: 1 PID: 5249 Comm: syz-executor251 Not tainted 6.4.0-rc5-syzkaller #0
[ 83.631502][ T5249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
[ 83.641562][ T5249] RIP: 0010:look_up_lock_class+0xc2/0x140
[ 83.647292][ T5249] Code: 8b 16 48 c7 c0 60 91 1e 90 48 39 c2 74 46 f6 05 5d 02 92 03 01 75 3d c6 05 54 02 92 03 01 48 c7 c7 a0 ae ea 8a e8 de 8a a3 f6 <0f> 0b eb 26 e8 f5 d0 80 f9 48 c7 c7 e0 ad ea 8a 89 de e8 37 ca fd
[ 83.666901][ T5249] RSP: 0018:ffffc900041bf590 EFLAGS: 00010046
[ 83.672969][ T5249] RAX: 30aff147e011a400 RBX: ffffffff9006b360 RCX: ffff8880177bd940
[ 83.680945][ T5249] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 83.688936][ T5249] RBP: ffffc900041bf698 R08: ffffffff81530142 R09: ffffed1017325163
[ 83.696932][ T5249] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
[ 83.704930][ T5249] R13: 1ffff92000837ec0 R14: ffff888075bfc888 R15: ffffffff91cac681
[ 83.712911][ T5249] FS: 0000555555be9300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[ 83.721845][ T5249] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 83.728429][ T5249] CR2: 00007fc6cdfc6138 CR3: 000000002b756000 CR4: 00000000003506e0
[ 83.736406][ T5249] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 83.744377][ T5249] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 83.752353][ T5249] Call Trace:
[ 83.755656][ T5249]
[ 83.758642][ T5249] ? __warn+0x162/0x4a0
[ 83.762827][ T5249] ? look_up_lock_class+0xc2/0x140
[ 83.767963][ T5249] ? report_bug+0x2b3/0x500
[ 83.772475][ T5249] ? look_up_lock_class+0xc2/0x140
[ 83.777629][ T5249] ? handle_bug+0x3d/0x70
[ 83.781960][ T5249] ? exc_invalid_op+0x1a/0x50
[ 83.786642][ T5249] ? asm_exc_invalid_op+0x1a/0x20
[ 83.791762][ T5249] ? __warn_printk+0x292/0x360
[ 83.796558][ T5249] ? look_up_lock_class+0xc2/0x140
[ 83.801698][ T5249] register_lock_class+0x104/0x990
[ 83.806830][ T5249] ? is_dynamic_key+0x1f0/0x1f0
[ 83.811692][ T5249] ? mark_lock+0x9a/0x340
[ 83.816035][ T5249] __lock_acquire+0xd3/0x2070
[ 83.820739][ T5249] lock_acquire+0x1e3/0x520
[ 83.825248][ T5249] ? ext4_ioctl+0x453c/0x5b60
[ 83.829932][ T5249] ? read_lock_is_recursive+0x20/0x20
[ 83.835332][ T5249] ? rcu_is_watching+0x15/0xb0
[ 83.840100][ T5249] ? __might_sleep+0xc0/0xc0
[ 83.844703][ T5249] ? __down_write_common+0x161/0x200
[ 83.849996][ T5249] ? clear_nonspinnable+0x60/0x60
[ 83.855033][ T5249] down_write_nested+0x3d/0x50
[ 83.859806][ T5249] ? ext4_ioctl+0x453c/0x5b60
[ 83.864495][ T5249] ext4_ioctl+0x453c/0x5b60
[ 83.869011][ T5249] ? ext4_fileattr_set+0x1790/0x1790
[ 83.874300][ T5249] ? mark_lock+0x9a/0x340
[ 83.878638][ T5249] ? do_vfs_ioctl+0x1c28/0x2b10
[ 83.883498][ T5249] ? __x64_compat_sys_ioctl+0x90/0x90
[ 83.888879][ T5249] ? __lock_acquire+0x2070/0x2070
[ 83.893910][ T5249] ? lockdep_hardirqs_on+0x98/0x140
[ 83.899117][ T5249] ? __kmem_cache_free+0x264/0x3c0
[ 83.904241][ T5249] ? tomoyo_path_number_perm+0x663/0x840
[ 83.909882][ T5249] ? tomoyo_path_number_perm+0x6e4/0x840
[ 83.915522][ T5249] ? tomoyo_check_path_acl+0x1c0/0x1c0
[ 83.920995][ T5249] ? _raw_spin_lock_irqsave+0x120/0x120
[ 83.926548][ T5249] ? __asan_memset+0x23/0x40
[ 83.931152][ T5249] ? smack_file_ioctl+0x295/0x390
[ 83.936179][ T5249] ? smack_file_alloc_security+0xe0/0xe0
[ 83.941819][ T5249] ? do_notify_parent+0xf50/0xf50
[ 83.946852][ T5249] ? bpf_lsm_file_ioctl+0x9/0x10
[ 83.951794][ T5249] ? security_file_ioctl+0x81/0xa0
[ 83.956911][ T5249] ? ext4_fileattr_set+0x1790/0x1790
[ 83.962202][ T5249] __se_sys_ioctl+0xf1/0x160
[ 83.966805][ T5249] do_syscall_64+0x41/0xc0
[ 83.971234][ T5249] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 83.977136][ T5249] RIP: 0033:0x7fc6cdf53a19
[ 83.981552][ T5249] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 84.001192][ T5249] RSP: 002b:00007ffdb4dc9718 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 84.009623][ T5249] RAX: ffffffffffffffda RBX: 69662f7375622f2e RCX: 00007fc6cdf53a19
[ 84.017605][ T5249] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[ 84.025577][ T5249] RBP: 0000000000000000 R08: 00007ffdb4dc9740 R09: 00007ffdb4dc9740
[ 84.033557][ T5249] R10: 00007ffdb4dc9190 R11: 0000000000000246 R12: 00007ffdb4dc973c
[ 84.041531][ T5249] R13: 00007ffdb4dc9770 R14: 00007ffdb4dc9750 R15: 0000000000000052
[ 84.049542][ T5249]
[ 84.052562][ T5249] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 84.059843][ T5249] CPU: 1 PID: 5249 Comm: syz-executor251 Not tainted 6.4.0-rc5-syzkaller #0
[ 84.068519][ T5249] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
[ 84.078578][ T5249] Call Trace:
[ 84.081873][ T5249]
[ 84.084808][ T5249] dump_stack_lvl+0x1e7/0x2d0
[ 84.089505][ T5249] ? nf_tcp_handle_invalid+0x650/0x650
[ 84.094981][ T5249] ? panic+0x770/0x770
[ 84.099061][ T5249] ? vscnprintf+0x5d/0x80
[ 84.103408][ T5249] panic+0x30f/0x770
[ 84.107311][ T5249] ? __warn+0x171/0x4a0
[ 84.111480][ T5249] ? __memcpy_flushcache+0x2b0/0x2b0
[ 84.116795][ T5249] __warn+0x314/0x4a0
[ 84.120790][ T5249] ? look_up_lock_class+0xc2/0x140
[ 84.125911][ T5249] report_bug+0x2b3/0x500
[ 84.130249][ T5249] ? look_up_lock_class+0xc2/0x140
[ 84.135368][ T5249] handle_bug+0x3d/0x70
[ 84.139527][ T5249] exc_invalid_op+0x1a/0x50
[ 84.144032][ T5249] asm_exc_invalid_op+0x1a/0x20
[ 84.148890][ T5249] RIP: 0010:look_up_lock_class+0xc2/0x140
[ 84.154619][ T5249] Code: 8b 16 48 c7 c0 60 91 1e 90 48 39 c2 74 46 f6 05 5d 02 92 03 01 75 3d c6 05 54 02 92 03 01 48 c7 c7 a0 ae ea 8a e8 de 8a a3 f6 <0f> 0b eb 26 e8 f5 d0 80 f9 48 c7 c7 e0 ad ea 8a 89 de e8 37 ca fd
[ 84.174236][ T5249] RSP: 0018:ffffc900041bf590 EFLAGS: 00010046
[ 84.180311][ T5249] RAX: 30aff147e011a400 RBX: ffffffff9006b360 RCX: ffff8880177bd940
[ 84.188287][ T5249] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 84.196263][ T5249] RBP: ffffc900041bf698 R08: ffffffff81530142 R09: ffffed1017325163
[ 84.204244][ T5249] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
[ 84.212217][ T5249] R13: 1ffff92000837ec0 R14: ffff888075bfc888 R15: ffffffff91cac681
[ 84.220207][ T5249] ? __warn_printk+0x292/0x360
[ 84.225017][ T5249] register_lock_class+0x104/0x990
[ 84.230147][ T5249] ? is_dynamic_key+0x1f0/0x1f0
[ 84.235006][ T5249] ? mark_lock+0x9a/0x340
[ 84.239361][ T5249] __lock_acquire+0xd3/0x2070
[ 84.244067][ T5249] lock_acquire+0x1e3/0x520
[ 84.248578][ T5249] ? ext4_ioctl+0x453c/0x5b60
[ 84.253266][ T5249] ? read_lock_is_recursive+0x20/0x20
[ 84.258650][ T5249] ? rcu_is_watching+0x15/0xb0
[ 84.263416][ T5249] ? __might_sleep+0xc0/0xc0
[ 84.268021][ T5249] ? __down_write_common+0x161/0x200
[ 84.273319][ T5249] ? clear_nonspinnable+0x60/0x60
[ 84.278355][ T5249] down_write_nested+0x3d/0x50
[ 84.283125][ T5249] ? ext4_ioctl+0x453c/0x5b60
[ 84.287804][ T5249] ext4_ioctl+0x453c/0x5b60
[ 84.292319][ T5249] ? ext4_fileattr_set+0x1790/0x1790
[ 84.297610][ T5249] ? mark_lock+0x9a/0x340
[ 84.301952][ T5249] ? do_vfs_ioctl+0x1c28/0x2b10
[ 84.306819][ T5249] ? __x64_compat_sys_ioctl+0x90/0x90
[ 84.312203][ T5249] ? __lock_acquire+0x2070/0x2070
[ 84.317236][ T5249] ? lockdep_hardirqs_on+0x98/0x140
[ 84.322452][ T5249] ? __kmem_cache_free+0x264/0x3c0
[ 84.327577][ T5249] ? tomoyo_path_number_perm+0x663/0x840
[ 84.333309][ T5249] ? tomoyo_path_number_perm+0x6e4/0x840
[ 84.338953][ T5249] ? tomoyo_check_path_acl+0x1c0/0x1c0
[ 84.344422][ T5249] ? _raw_spin_lock_irqsave+0x120/0x120
[ 84.349975][ T5249] ? __asan_memset+0x23/0x40
[ 84.354579][ T5249] ? smack_file_ioctl+0x295/0x390
[ 84.359610][ T5249] ? smack_file_alloc_security+0xe0/0xe0
[ 84.365253][ T5249] ? do_notify_parent+0xf50/0xf50
[ 84.370288][ T5249] ? bpf_lsm_file_ioctl+0x9/0x10
[ 84.375233][ T5249] ? security_file_ioctl+0x81/0xa0
[ 84.380353][ T5249] ? ext4_fileattr_set+0x1790/0x1790
[ 84.385648][ T5249] __se_sys_ioctl+0xf1/0x160
[ 84.390250][ T5249] do_syscall_64+0x41/0xc0
[ 84.394676][ T5249] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 84.400575][ T5249] RIP: 0033:0x7fc6cdf53a19
[ 84.405000][ T5249] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 84.424610][ T5249] RSP: 002b:00007ffdb4dc9718 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 84.433028][ T5249] RAX: ffffffffffffffda RBX: 69662f7375622f2e RCX: 00007fc6cdf53a19
[ 84.441009][ T5249] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[ 84.448984][ T5249] RBP: 0000000000000000 R08: 00007ffdb4dc9740 R09: 00007ffdb4dc9740
[ 84.456955][ T5249] R10: 00007ffdb4dc9190 R11: 0000000000000246 R12: 00007ffdb4dc973c
[ 84.464930][ T5249] R13: 00007ffdb4dc9770 R14: 00007ffdb4dc9750 R15: 0000000000000052
[ 84.472908][ T5249]
[ 84.476235][ T5249] Kernel Offset: disabled
[ 84.480566][ T5249] Rebooting in 86400 seconds..