./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2014470277
<...>
forked to background, child pid 4640
no interfaces have a carrier
[ 27.982880][ T4641] 8021q: adding VLAN 0 to HW filter on device bond0
[ 27.992001][ T4641] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.77' (ECDSA) to the list of known hosts.
execve("./syz-executor2014470277", ["./syz-executor2014470277"], 0x7fff462a7330 /* 10 vars */) = 0
brk(NULL) = 0x555555b85000
brk(0x555555b85c40) = 0x555555b85c40
arch_prctl(ARCH_SET_FS, 0x555555b85300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor2014470277", 4096) = 28
brk(0x555555ba6c40) = 0x555555ba6c40
brk(0x555555ba7000) = 0x555555ba7000
mprotect(0x7f990cb4b000, 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() = 5061
mkdir("./syzkaller.kOY9pS", 0700) = 0
chmod("./syzkaller.kOY9pS", 0777) = 0
chdir("./syzkaller.kOY9pS") = 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=0x555555b855d0) = 5062
./strace-static-x86_64: Process 5062 attached
[pid 5062] chdir("./0") = 0
[pid 5062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5062] setpgid(0, 0) = 0
[pid 5062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5062] write(3, "1000", 4) = 4
[pid 5062] close(3) = 0
[pid 5062] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5062] memfd_create("syzkaller", 0) = 3
[pid 5062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5062] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5062] munmap(0x7f9904690000, 262144) = 0
[pid 5062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5062] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5062] close(3) = 0
[pid 5062] mkdir("./file0", 0777) = 0
syzkaller login: [ 48.707447][ T5062] loop0: detected capacity change from 0 to 512
[ 48.717286][ T5062] =======================================================
[ 48.717286][ T5062] WARNING: The mand mount option has been deprecated and
[ 48.717286][ T5062] and is ignored by this kernel. Remove the mand
[ 48.717286][ T5062] option from the mount to silence this warning.
[ 48.717286][ T5062] =======================================================
[pid 5062] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5062] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5062] chdir("./file0") = 0
[pid 5062] ioctl(4, LOOP_CLR_FD) = 0
[pid 5062] close(4) = 0
[pid 5062] exit_group(0) = ?
[pid 5062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5062, 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 48.753954][ T5062] EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!
[ 48.769689][ T5062] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 48.782328][ T5062] EXT4-fs (loop0): 1 truncate cleaned up
[ 48.791494][ T5062] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./0/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./0") = 0
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=0x555555b855d0) = 5066
./strace-static-x86_64: Process 5066 attached
[pid 5066] chdir("./1") = 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] memfd_create("syzkaller", 0) = 3
[pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5066] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 48.815751][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5066] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5066] close(3) = 0
[pid 5066] mkdir("./file0", 0777) = 0
[pid 5066] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5066] chdir("./file0") = 0
[pid 5066] ioctl(4, LOOP_CLR_FD) = 0
[pid 5066] close(4) = 0
[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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 48.862202][ T5066] loop0: detected capacity change from 0 to 512
[ 48.874200][ T5066] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 48.884192][ T5066] EXT4-fs (loop0): 1 truncate cleaned up
[ 48.891717][ T5066] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./1/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5068
./strace-static-x86_64: Process 5068 attached
[pid 5068] chdir("./2") = 0
[pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5068] setpgid(0, 0) = 0
[pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5068] write(3, "1000", 4) = 4
[pid 5068] close(3) = 0
[pid 5068] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5068] memfd_create("syzkaller", 0) = 3
[pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5068] munmap(0x7f9904690000, 262144) = 0
[pid 5068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 48.923572][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5068] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5068] close(3) = 0
[pid 5068] mkdir("./file0", 0777) = 0
[pid 5068] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5068] chdir("./file0") = 0
[pid 5068] ioctl(4, LOOP_CLR_FD) = 0
[pid 5068] close(4) = 0
[pid 5068] exit_group(0) = ?
[pid 5068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5068, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 48.969691][ T5068] loop0: detected capacity change from 0 to 512
[ 48.981047][ T5068] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 48.991642][ T5068] EXT4-fs (loop0): 1 truncate cleaned up
[ 48.999933][ T5068] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./2/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5070
./strace-static-x86_64: Process 5070 attached
[pid 5070] chdir("./3") = 0
[pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5070] setpgid(0, 0) = 0
[pid 5070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5070] write(3, "1000", 4) = 4
[pid 5070] close(3) = 0
[pid 5070] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5070] memfd_create("syzkaller", 0) = 3
[pid 5070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5070] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5070] munmap(0x7f9904690000, 262144) = 0
[pid 5070] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 49.022539][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5070] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5070] close(3) = 0
[pid 5070] mkdir("./file0", 0777) = 0
[pid 5070] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5070] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5070] chdir("./file0") = 0
[pid 5070] ioctl(4, LOOP_CLR_FD) = 0
[pid 5070] close(4) = 0
[pid 5070] exit_group(0) = ?
[pid 5070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5070, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.066384][ T5070] loop0: detected capacity change from 0 to 512
[ 49.077532][ T5070] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.087167][ T5070] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.095508][ T5070] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./3/file0") = 0
getdents64(3, 0x555555b86620 /* 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
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5072
./strace-static-x86_64: Process 5072 attached
[pid 5072] chdir("./4") = 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
[pid 5072] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5072] memfd_create("syzkaller", 0) = 3
[pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5072] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5072] close(3) = 0
[pid 5072] mkdir("./file0", 0777) = 0
[ 49.127125][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[ 49.163942][ T5072] loop0: detected capacity change from 0 to 512
[pid 5072] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5072] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5072] chdir("./file0") = 0
[pid 5072] ioctl(4, LOOP_CLR_FD) = 0
[pid 5072] close(4) = 0
[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("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.175158][ T5072] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.185342][ T5072] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.193976][ T5072] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./4/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5074
./strace-static-x86_64: Process 5074 attached
[pid 5074] chdir("./5") = 0
[pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5074] setpgid(0, 0) = 0
[pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5074] write(3, "1000", 4) = 4
[pid 5074] close(3) = 0
[pid 5074] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5074] memfd_create("syzkaller", 0) = 3
[pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5074] munmap(0x7f9904690000, 262144) = 0
[pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 49.222111][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5074] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5074] close(3) = 0
[pid 5074] mkdir("./file0", 0777) = 0
[pid 5074] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5074] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5074] chdir("./file0") = 0
[pid 5074] ioctl(4, LOOP_CLR_FD) = 0
[pid 5074] close(4) = 0
[pid 5074] exit_group(0) = ?
[pid 5074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.264257][ T5074] loop0: detected capacity change from 0 to 512
[ 49.275180][ T5074] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.284986][ T5074] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.292426][ T5074] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./5/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5076
./strace-static-x86_64: Process 5076 attached
[pid 5076] chdir("./6") = 0
[pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5076] setpgid(0, 0) = 0
[pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5076] write(3, "1000", 4) = 4
[pid 5076] close(3) = 0
[pid 5076] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5076] memfd_create("syzkaller", 0) = 3
[pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5076] munmap(0x7f9904690000, 262144) = 0
[pid 5076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 49.322497][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5076] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5076] close(3) = 0
[pid 5076] mkdir("./file0", 0777) = 0
[pid 5076] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5076] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5076] chdir("./file0") = 0
[pid 5076] ioctl(4, LOOP_CLR_FD) = 0
[pid 5076] close(4) = 0
[pid 5076] exit_group(0) = ?
[pid 5076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.374060][ T5076] loop0: detected capacity change from 0 to 512
[ 49.385390][ T5076] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.396007][ T5076] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.404123][ T5076] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./6/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5078
./strace-static-x86_64: Process 5078 attached
[pid 5078] chdir("./7") = 0
[pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5078] setpgid(0, 0) = 0
[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] memfd_create("syzkaller", 0) = 3
[pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 49.432186][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5078] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5078] close(3) = 0
[pid 5078] mkdir("./file0", 0777) = 0
[pid 5078] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5078] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5078] chdir("./file0") = 0
[pid 5078] ioctl(4, LOOP_CLR_FD) = 0
[pid 5078] close(4) = 0
[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=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.477769][ T5078] loop0: detected capacity change from 0 to 512
[ 49.490086][ T5078] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.499981][ T5078] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.506305][ T5078] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./7/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5080
./strace-static-x86_64: Process 5080 attached
[pid 5080] chdir("./8") = 0
[pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5080] setpgid(0, 0) = 0
[pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5080] write(3, "1000", 4) = 4
[pid 5080] close(3) = 0
[pid 5080] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5080] memfd_create("syzkaller", 0) = 3
[pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5080] munmap(0x7f9904690000, 262144) = 0
[pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 49.533610][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5080] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5080] close(3) = 0
[pid 5080] mkdir("./file0", 0777) = 0
[pid 5080] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5080] chdir("./file0") = 0
[pid 5080] ioctl(4, LOOP_CLR_FD) = 0
[pid 5080] close(4) = 0
[pid 5080] exit_group(0) = ?
[pid 5080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
[ 49.579030][ T5080] loop0: detected capacity change from 0 to 512
[ 49.592613][ T5080] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.602570][ T5080] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.610934][ T5080] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./8/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5083
./strace-static-x86_64: Process 5083 attached
[pid 5083] chdir("./9") = 0
[pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5083] setpgid(0, 0) = 0
[pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5083] write(3, "1000", 4) = 4
[pid 5083] close(3) = 0
[pid 5083] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5083] memfd_create("syzkaller", 0) = 3
[pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5083] munmap(0x7f9904690000, 262144) = 0
[pid 5083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5083] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5083] close(3) = 0
[pid 5083] mkdir("./file0", 0777) = 0
[ 49.638499][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[ 49.673695][ T5083] loop0: detected capacity change from 0 to 512
[pid 5083] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5083] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5083] chdir("./file0") = 0
[pid 5083] ioctl(4, LOOP_CLR_FD) = 0
[pid 5083] close(4) = 0
[pid 5083] exit_group(0) = ?
[pid 5083] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./9/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5085
./strace-static-x86_64: Process 5085 attached
[pid 5085] chdir("./10") = 0
[pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5085] setpgid(0, 0) = 0
[pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5085] write(3, "1000", 4) = 4
[pid 5085] close(3) = 0
[ 49.684995][ T5083] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.694844][ T5083] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.702273][ T5083] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 49.729396][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5085] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5085] memfd_create("syzkaller", 0) = 3
[pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5085] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5085] munmap(0x7f9904690000, 262144) = 0
[pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5085] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5085] close(3) = 0
[pid 5085] mkdir("./file0", 0777) = 0
[pid 5085] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5085] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5085] chdir("./file0") = 0
[pid 5085] ioctl(4, LOOP_CLR_FD) = 0
[pid 5085] close(4) = 0
[pid 5085] exit_group(0) = ?
[pid 5085] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.781455][ T5085] loop0: detected capacity change from 0 to 512
[ 49.793297][ T5085] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.802916][ T5085] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.816435][ T5085] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./10/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
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=0x555555b855d0) = 5087
./strace-static-x86_64: Process 5087 attached
[pid 5087] chdir("./11") = 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] memfd_create("syzkaller", 0) = 3
[pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[ 49.843047][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5087] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5087] close(3) = 0
[pid 5087] mkdir("./file0", 0777) = 0
[pid 5087] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5087] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5087] chdir("./file0") = 0
[pid 5087] ioctl(4, LOOP_CLR_FD) = 0
[pid 5087] close(4) = 0
[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=4 /* 0.04 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.884919][ T5087] loop0: detected capacity change from 0 to 512
[ 49.897530][ T5087] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 49.907197][ T5087] EXT4-fs (loop0): 1 truncate cleaned up
[ 49.916669][ T5087] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./11/file0") = 0
getdents64(3, 0x555555b86620 /* 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)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5089
./strace-static-x86_64: Process 5089 attached
[pid 5089] chdir("./12") = 0
[pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5089] setpgid(0, 0) = 0
[pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5089] write(3, "1000", 4) = 4
[pid 5089] close(3) = 0
[pid 5089] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5089] memfd_create("syzkaller", 0) = 3
[pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5089] munmap(0x7f9904690000, 262144) = 0
[pid 5089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 49.944729][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5089] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5089] close(3) = 0
[pid 5089] mkdir("./file0", 0777) = 0
[pid 5089] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5089] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5089] chdir("./file0") = 0
[pid 5089] ioctl(4, LOOP_CLR_FD) = 0
[pid 5089] close(4) = 0
[pid 5089] exit_group(0) = ?
[pid 5089] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 49.989774][ T5089] loop0: detected capacity change from 0 to 512
[ 50.000978][ T5089] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.011212][ T5089] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.018399][ T5089] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./12/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5091
./strace-static-x86_64: Process 5091 attached
[pid 5091] chdir("./13") = 0
[pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5091] setpgid(0, 0) = 0
[pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5091] write(3, "1000", 4) = 4
[pid 5091] close(3) = 0
[pid 5091] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5091] memfd_create("syzkaller", 0) = 3
[pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5091] munmap(0x7f9904690000, 262144) = 0
[pid 5091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.047923][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5091] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5091] close(3) = 0
[pid 5091] mkdir("./file0", 0777) = 0
[pid 5091] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5091] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5091] chdir("./file0") = 0
[pid 5091] ioctl(4, LOOP_CLR_FD) = 0
[pid 5091] close(4) = 0
[pid 5091] exit_group(0) = ?
[pid 5091] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.099881][ T5091] loop0: detected capacity change from 0 to 512
[ 50.111074][ T5091] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.120681][ T5091] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.128162][ T5091] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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)
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./13/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5093
./strace-static-x86_64: Process 5093 attached
[pid 5093] chdir("./14") = 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] memfd_create("syzkaller", 0) = 3
[pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.152905][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5093] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5093] close(3) = 0
[pid 5093] mkdir("./file0", 0777) = 0
[pid 5093] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5093] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5093] chdir("./file0") = 0
[pid 5093] ioctl(4, LOOP_CLR_FD) = 0
[pid 5093] close(4) = 0
[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("./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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.201949][ T5093] loop0: detected capacity change from 0 to 512
[ 50.213801][ T5093] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.223582][ T5093] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.230923][ T5093] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./14/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5095
./strace-static-x86_64: Process 5095 attached
[pid 5095] chdir("./15") = 0
[pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5095] setpgid(0, 0) = 0
[pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5095] write(3, "1000", 4) = 4
[pid 5095] close(3) = 0
[pid 5095] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5095] memfd_create("syzkaller", 0) = 3
[pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5095] munmap(0x7f9904690000, 262144) = 0
[pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.256071][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5095] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5095] close(3) = 0
[pid 5095] mkdir("./file0", 0777) = 0
[pid 5095] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5095] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5095] chdir("./file0") = 0
[pid 5095] ioctl(4, LOOP_CLR_FD) = 0
[pid 5095] close(4) = 0
[pid 5095] exit_group(0) = ?
[pid 5095] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.307615][ T5095] loop0: detected capacity change from 0 to 512
[ 50.319007][ T5095] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.330672][ T5095] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.337533][ T5095] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./15/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5097
./strace-static-x86_64: Process 5097 attached
[pid 5097] chdir("./16") = 0
[pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5097] setpgid(0, 0) = 0
[pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5097] write(3, "1000", 4) = 4
[pid 5097] close(3) = 0
[pid 5097] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5097] memfd_create("syzkaller", 0) = 3
[pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5097] munmap(0x7f9904690000, 262144) = 0
[pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.369466][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5097] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5097] close(3) = 0
[pid 5097] mkdir("./file0", 0777) = 0
[pid 5097] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5097] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5097] chdir("./file0") = 0
[pid 5097] ioctl(4, LOOP_CLR_FD) = 0
[pid 5097] close(4) = 0
[pid 5097] exit_group(0) = ?
[pid 5097] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.412826][ T5097] loop0: detected capacity change from 0 to 512
[ 50.424584][ T5097] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.434861][ T5097] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.442005][ T5097] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./16/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5099
./strace-static-x86_64: Process 5099 attached
[pid 5099] chdir("./17") = 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] memfd_create("syzkaller", 0) = 3
[pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5099] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5099] close(3) = 0
[pid 5099] mkdir("./file0", 0777) = 0
[ 50.471511][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[ 50.506603][ T5099] loop0: detected capacity change from 0 to 512
[pid 5099] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5099] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5099] chdir("./file0") = 0
[pid 5099] ioctl(4, LOOP_CLR_FD) = 0
[pid 5099] close(4) = 0
[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=2 /* 0.02 s */} ---
umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./17/file0") = 0
getdents64(3, 0x555555b86620 /* 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)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5101
./strace-static-x86_64: Process 5101 attached
[pid 5101] chdir("./18") = 0
[pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5101] setpgid(0, 0) = 0
[pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5101] write(3, "1000", 4) = 4
[pid 5101] close(3) = 0
[pid 5101] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5101] memfd_create("syzkaller", 0) = 3
[pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 50.517926][ T5099] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.527445][ T5099] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.534898][ T5099] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 50.561351][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5101] munmap(0x7f9904690000, 262144) = 0
[pid 5101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5101] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5101] close(3) = 0
[pid 5101] mkdir("./file0", 0777) = 0
[pid 5101] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5101] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5101] chdir("./file0") = 0
[pid 5101] ioctl(4, LOOP_CLR_FD) = 0
[pid 5101] close(4) = 0
[pid 5101] exit_group(0) = ?
[pid 5101] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.605017][ T5101] loop0: detected capacity change from 0 to 512
[ 50.616766][ T5101] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.626888][ T5101] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.633074][ T5101] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./18/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./18") = 0
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=0x555555b855d0) = 5103
./strace-static-x86_64: Process 5103 attached
[pid 5103] chdir("./19") = 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] memfd_create("syzkaller", 0) = 3
[pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.660474][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5103] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5103] close(3) = 0
[pid 5103] mkdir("./file0", 0777) = 0
[pid 5103] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5103] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5103] chdir("./file0") = 0
[pid 5103] ioctl(4, LOOP_CLR_FD) = 0
[pid 5103] close(4) = 0
[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("./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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.711748][ T5103] loop0: detected capacity change from 0 to 512
[ 50.723578][ T5103] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.733028][ T5103] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.746411][ T5103] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./19/file0") = 0
getdents64(3, 0x555555b86620 /* 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, child_tidptr=0x555555b855d0) = 5105
./strace-static-x86_64: Process 5105 attached
[pid 5105] chdir("./20") = 0
[pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5105] setpgid(0, 0) = 0
[pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5105] write(3, "1000", 4) = 4
[pid 5105] close(3) = 0
[pid 5105] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5105] memfd_create("syzkaller", 0) = 3
[pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5105] munmap(0x7f9904690000, 262144) = 0
[pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.772431][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5105] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5105] close(3) = 0
[pid 5105] mkdir("./file0", 0777) = 0
[pid 5105] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5105] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5105] chdir("./file0") = 0
[pid 5105] ioctl(4, LOOP_CLR_FD) = 0
[pid 5105] close(4) = 0
[pid 5105] exit_group(0) = ?
[pid 5105] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.818214][ T5105] loop0: detected capacity change from 0 to 512
[ 50.829548][ T5105] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.840402][ T5105] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.847018][ T5105] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./20/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5107
./strace-static-x86_64: Process 5107 attached
[pid 5107] chdir("./21") = 0
[pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5107] setpgid(0, 0) = 0
[pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5107] write(3, "1000", 4) = 4
[pid 5107] close(3) = 0
[pid 5107] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5107] memfd_create("syzkaller", 0) = 3
[pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5107] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5107] munmap(0x7f9904690000, 262144) = 0
[pid 5107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.869737][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5107] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5107] close(3) = 0
[pid 5107] mkdir("./file0", 0777) = 0
[pid 5107] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5107] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5107] chdir("./file0") = 0
[pid 5107] ioctl(4, LOOP_CLR_FD) = 0
[pid 5107] close(4) = 0
[pid 5107] exit_group(0) = ?
[pid 5107] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 50.925350][ T5107] loop0: detected capacity change from 0 to 512
[ 50.936631][ T5107] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 50.946274][ T5107] EXT4-fs (loop0): 1 truncate cleaned up
[ 50.953645][ T5107] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./21/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
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=0x555555b855d0) = 5109
./strace-static-x86_64: Process 5109 attached
[pid 5109] chdir("./22") = 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] memfd_create("syzkaller", 0) = 3
[pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 50.982707][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5109] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5109] close(3) = 0
[pid 5109] mkdir("./file0", 0777) = 0
[pid 5109] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5109] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5109] chdir("./file0") = 0
[pid 5109] ioctl(4, LOOP_CLR_FD) = 0
[pid 5109] close(4) = 0
[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=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.026646][ T5109] loop0: detected capacity change from 0 to 512
[ 51.037499][ T5109] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.047187][ T5109] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.056612][ T5109] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./22/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5111
./strace-static-x86_64: Process 5111 attached
[pid 5111] chdir("./23") = 0
[pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5111] setpgid(0, 0) = 0
[pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5111] write(3, "1000", 4) = 4
[pid 5111] close(3) = 0
[pid 5111] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5111] memfd_create("syzkaller", 0) = 3
[pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5111] munmap(0x7f9904690000, 262144) = 0
[pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 51.085412][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5111] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5111] close(3) = 0
[pid 5111] mkdir("./file0", 0777) = 0
[pid 5111] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5111] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5111] chdir("./file0") = 0
[pid 5111] ioctl(4, LOOP_CLR_FD) = 0
[pid 5111] close(4) = 0
[pid 5111] exit_group(0) = ?
[pid 5111] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.131483][ T5111] loop0: detected capacity change from 0 to 512
[ 51.142797][ T5111] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.152227][ T5111] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.160750][ T5111] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./23/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5113
./strace-static-x86_64: Process 5113 attached
[pid 5113] chdir("./24") = 0
[pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5113] setpgid(0, 0) = 0
[pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5113] write(3, "1000", 4) = 4
[pid 5113] close(3) = 0
[pid 5113] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5113] memfd_create("syzkaller", 0) = 3
[pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5113] munmap(0x7f9904690000, 262144) = 0
[pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 51.186302][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5113] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5113] close(3) = 0
[pid 5113] mkdir("./file0", 0777) = 0
[pid 5113] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5113] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5113] chdir("./file0") = 0
[pid 5113] ioctl(4, LOOP_CLR_FD) = 0
[pid 5113] close(4) = 0
[pid 5113] exit_group(0) = ?
[pid 5113] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.237284][ T5113] loop0: detected capacity change from 0 to 512
[ 51.248191][ T5113] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.258440][ T5113] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.265944][ T5113] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./24/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5115
./strace-static-x86_64: Process 5115 attached
[pid 5115] chdir("./25") = 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] memfd_create("syzkaller", 0) = 3
[pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 51.287312][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5115] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5115] close(3) = 0
[pid 5115] mkdir("./file0", 0777) = 0
[pid 5115] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5115] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5115] chdir("./file0") = 0
[pid 5115] ioctl(4, LOOP_CLR_FD) = 0
[pid 5115] close(4) = 0
[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=4 /* 0.04 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
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.334555][ T5115] loop0: detected capacity change from 0 to 512
[ 51.338335][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 51.353794][ T5115] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.365909][ T5115] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.372258][ T5115] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./25/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5117
./strace-static-x86_64: Process 5117 attached
[pid 5117] chdir("./26") = 0
[pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5117] setpgid(0, 0) = 0
[pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5117] write(3, "1000", 4) = 4
[pid 5117] close(3) = 0
[pid 5117] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5117] memfd_create("syzkaller", 0) = 3
[pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5117] munmap(0x7f9904690000, 262144) = 0
[pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 51.407750][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5117] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5117] close(3) = 0
[pid 5117] mkdir("./file0", 0777) = 0
[pid 5117] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5117] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5117] chdir("./file0") = 0
[pid 5117] ioctl(4, LOOP_CLR_FD) = 0
[pid 5117] close(4) = 0
[pid 5117] exit_group(0) = ?
[pid 5117] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./26/binderfs") = 0
[ 51.458058][ T5117] loop0: detected capacity change from 0 to 512
[ 51.469129][ T5117] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.478789][ T5117] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.485010][ T5117] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./26/file0") = 0
getdents64(3, 0x555555b86620 /* 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, child_tidptr=0x555555b855d0) = 5119
./strace-static-x86_64: Process 5119 attached
[pid 5119] chdir("./27") = 0
[pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5119] setpgid(0, 0) = 0
[pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5119] write(3, "1000", 4) = 4
[pid 5119] close(3) = 0
[pid 5119] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5119] memfd_create("syzkaller", 0) = 3
[pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5119] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5119] munmap(0x7f9904690000, 262144) = 0
[pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5119] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5119] close(3) = 0
[pid 5119] mkdir("./file0", 0777) = 0
[ 51.507214][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[ 51.541394][ T5119] loop0: detected capacity change from 0 to 512
[pid 5119] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5119] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5119] chdir("./file0") = 0
[pid 5119] ioctl(4, LOOP_CLR_FD) = 0
[pid 5119] close(4) = 0
[pid 5119] exit_group(0) = ?
[pid 5119] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./27/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5121
./strace-static-x86_64: Process 5121 attached
[pid 5121] chdir("./28") = 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
[ 51.552664][ T5119] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.563904][ T5119] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.570575][ T5119] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 51.596601][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5121] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5121] memfd_create("syzkaller", 0) = 3
[pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5121] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5121] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5121] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5121] close(3) = 0
[pid 5121] mkdir("./file0", 0777) = 0
[pid 5121] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5121] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5121] chdir("./file0") = 0
[pid 5121] ioctl(4, LOOP_CLR_FD) = 0
[pid 5121] close(4) = 0
[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=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.645221][ T5121] loop0: detected capacity change from 0 to 512
[ 51.656659][ T5121] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.666736][ T5121] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.674830][ T5121] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./28/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5123
./strace-static-x86_64: Process 5123 attached
[pid 5123] chdir("./29") = 0
[pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5123] setpgid(0, 0) = 0
[pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5123] write(3, "1000", 4) = 4
[pid 5123] close(3) = 0
[pid 5123] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5123] memfd_create("syzkaller", 0) = 3
[pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 51.704091][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5123] munmap(0x7f9904690000, 262144) = 0
[pid 5123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5123] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5123] close(3) = 0
[pid 5123] mkdir("./file0", 0777) = 0
[ 51.750086][ T5123] loop0: detected capacity change from 0 to 512
[ 51.761063][ T5123] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.771050][ T5123] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5123] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5123] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5123] chdir("./file0") = 0
[pid 5123] ioctl(4, LOOP_CLR_FD) = 0
[pid 5123] close(4) = 0
[pid 5123] exit_group(0) = ?
[pid 5123] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./29/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./29") = 0
mkdir("./30", 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=0x555555b855d0) = 5125
./strace-static-x86_64: Process 5125 attached
[pid 5125] chdir("./30") = 0
[pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5125] setpgid(0, 0) = 0
[pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5125] write(3, "1000", 4) = 4
[pid 5125] close(3) = 0
[pid 5125] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5125] memfd_create("syzkaller", 0) = 3
[pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 51.806544][ T5123] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 51.839026][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5125] munmap(0x7f9904690000, 262144) = 0
[pid 5125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5125] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5125] close(3) = 0
[pid 5125] mkdir("./file0", 0777) = 0
[pid 5125] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5125] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5125] chdir("./file0") = 0
[pid 5125] ioctl(4, LOOP_CLR_FD) = 0
[pid 5125] close(4) = 0
[pid 5125] exit_group(0) = ?
[pid 5125] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.891508][ T5125] loop0: detected capacity change from 0 to 512
[ 51.903428][ T5125] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 51.913485][ T5125] EXT4-fs (loop0): 1 truncate cleaned up
[ 51.921031][ T5125] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./30/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5127
./strace-static-x86_64: Process 5127 attached
[pid 5127] chdir("./31") = 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] memfd_create("syzkaller", 0) = 3
[pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 51.947717][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5127] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5127] close(3) = 0
[pid 5127] mkdir("./file0", 0777) = 0
[pid 5127] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5127] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5127] chdir("./file0") = 0
[pid 5127] ioctl(4, LOOP_CLR_FD) = 0
[pid 5127] close(4) = 0
[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=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
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 51.992005][ T5127] loop0: detected capacity change from 0 to 512
[ 52.003468][ T5127] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.012850][ T5127] EXT4-fs (loop0): 1 truncate cleaned up
[ 52.021351][ T5127] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./31/file0") = 0
getdents64(3, 0x555555b86620 /* 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)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5129
./strace-static-x86_64: Process 5129 attached
[pid 5129] chdir("./32") = 0
[pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5129] setpgid(0, 0) = 0
[pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5129] write(3, "1000", 4) = 4
[pid 5129] close(3) = 0
[pid 5129] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5129] memfd_create("syzkaller", 0) = 3
[pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5129] munmap(0x7f9904690000, 262144) = 0
[pid 5129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 52.049976][ T5061] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5129] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5129] close(3) = 0
[pid 5129] mkdir("./file0", 0777) = 0
[pid 5129] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5129] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5129] chdir("./file0") = 0
[pid 5129] ioctl(4, LOOP_CLR_FD) = 0
[pid 5129] close(4) = 0
[pid 5129] exit_group(0) = ?
[pid 5129] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./32/file0") = 0
getdents64(3, 0x555555b86620 /* 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./strace-static-x86_64: Process 5131 attached
, child_tidptr=0x555555b855d0) = 5131
[pid 5131] chdir("./33") = 0
[pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5131] setpgid(0, 0) = 0
[pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5131] write(3, "1000", 4) = 4
[pid 5131] close(3) = 0
[pid 5131] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5131] memfd_create("syzkaller", 0) = 3
[pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5131] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5131] munmap(0x7f9904690000, 262144) = 0
[pid 5131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 52.101801][ T5129] loop0: detected capacity change from 0 to 512
[ 52.113120][ T5129] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.123048][ T5129] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5131] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5131] close(3) = 0
[pid 5131] mkdir("./file0", 0777) = 0
[pid 5131] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5131] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5131] chdir("./file0") = 0
[pid 5131] ioctl(4, LOOP_CLR_FD) = 0
[pid 5131] close(4) = 0
[pid 5131] exit_group(0) = ?
[pid 5131] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./33/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5133
./strace-static-x86_64: Process 5133 attached
[pid 5133] chdir("./34") = 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] memfd_create("syzkaller", 0) = 3
[pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 52.177232][ T5131] loop0: detected capacity change from 0 to 512
[ 52.187790][ T5131] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.198256][ T5131] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5133] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5133] close(3) = 0
[pid 5133] mkdir("./file0", 0777) = 0
[pid 5133] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5133] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5133] chdir("./file0") = 0
[pid 5133] ioctl(4, LOOP_CLR_FD) = 0
[pid 5133] close(4) = 0
[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 */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./34/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
[ 52.249018][ T5133] loop0: detected capacity change from 0 to 512
[ 52.261010][ T5133] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.270621][ T5133] EXT4-fs (loop0): 1 truncate cleaned up
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=0x555555b855d0) = 5135
./strace-static-x86_64: Process 5135 attached
[pid 5135] chdir("./35") = 0
[pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5135] setpgid(0, 0) = 0
[pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5135] write(3, "1000", 4) = 4
[pid 5135] close(3) = 0
[pid 5135] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5135] memfd_create("syzkaller", 0) = 3
[pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5135] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5135] munmap(0x7f9904690000, 262144) = 0
[pid 5135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5135] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5135] close(3) = 0
[pid 5135] mkdir("./file0", 0777) = 0
[pid 5135] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5135] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5135] chdir("./file0") = 0
[pid 5135] ioctl(4, LOOP_CLR_FD) = 0
[pid 5135] close(4) = 0
[pid 5135] exit_group(0) = ?
[pid 5135] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./35/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5137
./strace-static-x86_64: Process 5137 attached
[pid 5137] chdir("./36") = 0
[pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5137] setpgid(0, 0) = 0
[pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5137] write(3, "1000", 4) = 4
[pid 5137] close(3) = 0
[pid 5137] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5137] memfd_create("syzkaller", 0) = 3
[pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5137] munmap(0x7f9904690000, 262144) = 0
[pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 52.347578][ T5135] loop0: detected capacity change from 0 to 512
[ 52.358483][ T5135] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.368320][ T5135] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5137] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5137] close(3) = 0
[pid 5137] mkdir("./file0", 0777) = 0
[pid 5137] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5137] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5137] chdir("./file0") = 0
[pid 5137] ioctl(4, LOOP_CLR_FD) = 0
[pid 5137] close(4) = 0
[pid 5137] exit_group(0) = ?
[pid 5137] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./36/file0") = 0
getdents64(3, 0x555555b86620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5140
./strace-static-x86_64: Process 5140 attached
[pid 5140] chdir("./37") = 0
[pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5140] setpgid(0, 0) = 0
[pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5140] write(3, "1000", 4) = 4
[pid 5140] close(3) = 0
[pid 5140] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5140] memfd_create("syzkaller", 0) = 3
[pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 52.411552][ T5137] loop0: detected capacity change from 0 to 512
[ 52.414462][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 52.430483][ T5137] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.441216][ T5137] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5140] munmap(0x7f9904690000, 262144) = 0
[pid 5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5140] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5140] close(3) = 0
[pid 5140] mkdir("./file0", 0777) = 0
[pid 5140] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5140] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5140] chdir("./file0") = 0
[pid 5140] ioctl(4, LOOP_CLR_FD) = 0
[pid 5140] close(4) = 0
[pid 5140] exit_group(0) = ?
[pid 5140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./37/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
[ 52.498568][ T5140] loop0: detected capacity change from 0 to 512
[ 52.510190][ T5140] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.519353][ T5140] EXT4-fs (loop0): 1 truncate cleaned up
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=0x555555b855d0) = 5142
./strace-static-x86_64: Process 5142 attached
[pid 5142] chdir("./38") = 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] memfd_create("syzkaller", 0) = 3
[pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5142] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5142] close(3) = 0
[pid 5142] mkdir("./file0", 0777) = 0
[pid 5142] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5142] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5142] chdir("./file0") = 0
[pid 5142] ioctl(4, LOOP_CLR_FD) = 0
[pid 5142] close(4) = 0
[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=3 /* 0.03 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./38/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5144
./strace-static-x86_64: Process 5144 attached
[pid 5144] chdir("./39") = 0
[pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5144] setpgid(0, 0) = 0
[pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5144] write(3, "1000", 4) = 4
[pid 5144] close(3) = 0
[pid 5144] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5144] memfd_create("syzkaller", 0) = 3
[pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 52.600433][ T5142] loop0: detected capacity change from 0 to 512
[ 52.611497][ T5142] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.620744][ T5142] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5144] munmap(0x7f9904690000, 262144) = 0
[pid 5144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5144] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5144] close(3) = 0
[pid 5144] mkdir("./file0", 0777) = 0
[pid 5144] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5144] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5144] chdir("./file0") = 0
[pid 5144] ioctl(4, LOOP_CLR_FD) = 0
[pid 5144] close(4) = 0
[pid 5144] exit_group(0) = ?
[pid 5144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./39/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5146
./strace-static-x86_64: Process 5146 attached
[pid 5146] chdir("./40") = 0
[pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5146] setpgid(0, 0) = 0
[ 52.683920][ T5144] loop0: detected capacity change from 0 to 512
[ 52.695957][ T5144] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.706258][ T5144] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5146] write(3, "1000", 4) = 4
[pid 5146] close(3) = 0
[pid 5146] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5146] memfd_create("syzkaller", 0) = 3
[pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5146] munmap(0x7f9904690000, 262144) = 0
[pid 5146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5146] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5146] close(3) = 0
[pid 5146] mkdir("./file0", 0777) = 0
[pid 5146] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5146] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5146] chdir("./file0") = 0
[pid 5146] ioctl(4, LOOP_CLR_FD) = 0
[pid 5146] close(4) = 0
[pid 5146] exit_group(0) = ?
[pid 5146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./40/file0") = 0
getdents64(3, 0x555555b86620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5148
./strace-static-x86_64: Process 5148 attached
[pid 5148] chdir("./41") = 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] memfd_create("syzkaller", 0) = 3
[pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 52.778021][ T5146] loop0: detected capacity change from 0 to 512
[ 52.790718][ T5146] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.800324][ T5146] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5148] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5148] close(3) = 0
[pid 5148] mkdir("./file0", 0777) = 0
[pid 5148] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5148] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5148] chdir("./file0") = 0
[pid 5148] ioctl(4, LOOP_CLR_FD) = 0
[pid 5148] close(4) = 0
[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=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./41/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5150
./strace-static-x86_64: Process 5150 attached
[pid 5150] chdir("./42") = 0
[pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5150] setpgid(0, 0) = 0
[ 52.867094][ T5148] loop0: detected capacity change from 0 to 512
[ 52.872669][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 52.885657][ T5148] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.895578][ T5148] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5150] write(3, "1000", 4) = 4
[pid 5150] close(3) = 0
[pid 5150] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5150] memfd_create("syzkaller", 0) = 3
[pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5150] munmap(0x7f9904690000, 262144) = 0
[pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5150] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5150] close(3) = 0
[pid 5150] mkdir("./file0", 0777) = 0
[pid 5150] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5150] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5150] chdir("./file0") = 0
[pid 5150] ioctl(4, LOOP_CLR_FD) = 0
[pid 5150] close(4) = 0
[pid 5150] exit_group(0) = ?
[pid 5150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./42/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5152
./strace-static-x86_64: Process 5152 attached
[pid 5152] chdir("./43") = 0
[pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5152] setpgid(0, 0) = 0
[pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5152] write(3, "1000", 4) = 4
[pid 5152] close(3) = 0
[pid 5152] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5152] memfd_create("syzkaller", 0) = 3
[pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 52.960555][ T5150] loop0: detected capacity change from 0 to 512
[ 52.971523][ T5150] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 52.981172][ T5150] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5152] munmap(0x7f9904690000, 262144) = 0
[pid 5152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5152] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5152] close(3) = 0
[pid 5152] mkdir("./file0", 0777) = 0
[pid 5152] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5152] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5152] chdir("./file0") = 0
[pid 5152] ioctl(4, LOOP_CLR_FD) = 0
[pid 5152] close(4) = 0
[pid 5152] exit_group(0) = ?
[pid 5152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./43/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5154
./strace-static-x86_64: Process 5154 attached
[pid 5154] chdir("./44") = 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] memfd_create("syzkaller", 0) = 3
[pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 53.062285][ T5152] loop0: detected capacity change from 0 to 512
[ 53.073215][ T5152] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.082921][ T5152] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5154] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5154] close(3) = 0
[pid 5154] mkdir("./file0", 0777) = 0
[pid 5154] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5154] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5154] chdir("./file0") = 0
[pid 5154] ioctl(4, LOOP_CLR_FD) = 0
[pid 5154] close(4) = 0
[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=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./44/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5156
./strace-static-x86_64: Process 5156 attached
[ 53.158896][ T5154] loop0: detected capacity change from 0 to 512
[ 53.169987][ T5154] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.179381][ T5154] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5156] chdir("./45") = 0
[pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5156] setpgid(0, 0) = 0
[pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5156] write(3, "1000", 4) = 4
[pid 5156] close(3) = 0
[pid 5156] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5156] memfd_create("syzkaller", 0) = 3
[pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5156] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5156] munmap(0x7f9904690000, 262144) = 0
[pid 5156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5156] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5156] close(3) = 0
[pid 5156] mkdir("./file0", 0777) = 0
[pid 5156] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5156] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5156] chdir("./file0") = 0
[pid 5156] ioctl(4, LOOP_CLR_FD) = 0
[pid 5156] close(4) = 0
[pid 5156] exit_group(0) = ?
[pid 5156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./45/file0") = 0
getdents64(3, 0x555555b86620 /* 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, child_tidptr=0x555555b855d0) = 5158
./strace-static-x86_64: Process 5158 attached
[pid 5158] chdir("./46") = 0
[pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5158] setpgid(0, 0) = 0
[pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5158] write(3, "1000", 4) = 4
[pid 5158] close(3) = 0
[pid 5158] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5158] memfd_create("syzkaller", 0) = 3
[pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 53.253792][ T5156] loop0: detected capacity change from 0 to 512
[ 53.265698][ T5156] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.275356][ T5156] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5158] munmap(0x7f9904690000, 262144) = 0
[pid 5158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5158] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5158] close(3) = 0
[pid 5158] mkdir("./file0", 0777) = 0
[pid 5158] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5158] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5158] chdir("./file0") = 0
[pid 5158] ioctl(4, LOOP_CLR_FD) = 0
[pid 5158] close(4) = 0
[pid 5158] exit_group(0) = ?
[pid 5158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./46/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5160
./strace-static-x86_64: Process 5160 attached
[pid 5160] chdir("./47") = 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] memfd_create("syzkaller", 0) = 3
[pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 53.337113][ T5158] loop0: detected capacity change from 0 to 512
[ 53.349033][ T5158] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.359361][ T5158] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5160] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5160] close(3) = 0
[pid 5160] mkdir("./file0", 0777) = 0
[pid 5160] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5160] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5160] chdir("./file0") = 0
[pid 5160] ioctl(4, LOOP_CLR_FD) = 0
[pid 5160] close(4) = 0
[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=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./47/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5162
./strace-static-x86_64: Process 5162 attached
[pid 5162] chdir("./48") = 0
[pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5162] setpgid(0, 0) = 0
[pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5162] write(3, "1000", 4) = 4
[pid 5162] close(3) = 0
[pid 5162] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5162] memfd_create("syzkaller", 0) = 3
[pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 53.422208][ T5160] loop0: detected capacity change from 0 to 512
[ 53.433400][ T5160] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.442875][ T5160] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5162] munmap(0x7f9904690000, 262144) = 0
[pid 5162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5162] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5162] close(3) = 0
[pid 5162] mkdir("./file0", 0777) = 0
[pid 5162] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5162] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5162] chdir("./file0") = 0
[pid 5162] ioctl(4, LOOP_CLR_FD) = 0
[pid 5162] close(4) = 0
[pid 5162] exit_group(0) = ?
[pid 5162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./48/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5164
./strace-static-x86_64: Process 5164 attached
[pid 5164] chdir("./49") = 0
[pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5164] setpgid(0, 0) = 0
[pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5164] write(3, "1000", 4) = 4
[pid 5164] close(3) = 0
[pid 5164] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5164] memfd_create("syzkaller", 0) = 3
[pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5164] munmap(0x7f9904690000, 262144) = 0
[pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 53.506850][ T5162] loop0: detected capacity change from 0 to 512
[ 53.517852][ T5162] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.528340][ T5162] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5164] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5164] close(3) = 0
[pid 5164] mkdir("./file0", 0777) = 0
[pid 5164] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5164] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5164] chdir("./file0") = 0
[pid 5164] ioctl(4, LOOP_CLR_FD) = 0
[pid 5164] close(4) = 0
[pid 5164] exit_group(0) = ?
[pid 5164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./49/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5166
./strace-static-x86_64: Process 5166 attached
[pid 5166] chdir("./50") = 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] memfd_create("syzkaller", 0) = 3
[pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 53.578840][ T5164] loop0: detected capacity change from 0 to 512
[ 53.590735][ T5164] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.600230][ T5164] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5166] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5166] close(3) = 0
[pid 5166] mkdir("./file0", 0777) = 0
[pid 5166] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5166] chdir("./file0") = 0
[pid 5166] ioctl(4, LOOP_CLR_FD) = 0
[pid 5166] close(4) = 0
[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("./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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./50/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5168
./strace-static-x86_64: Process 5168 attached
[pid 5168] chdir("./51") = 0
[pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5168] setpgid(0, 0) = 0
[pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5168] write(3, "1000", 4) = 4
[pid 5168] close(3) = 0
[pid 5168] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5168] memfd_create("syzkaller", 0) = 3
[pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5168] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5168] munmap(0x7f9904690000, 262144) = 0
[pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 53.662988][ T5166] loop0: detected capacity change from 0 to 512
[ 53.674354][ T5166] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.684081][ T5166] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5168] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5168] close(3) = 0
[pid 5168] mkdir("./file0", 0777) = 0
[pid 5168] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5168] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5168] chdir("./file0") = 0
[pid 5168] ioctl(4, LOOP_CLR_FD) = 0
[pid 5168] close(4) = 0
[pid 5168] exit_group(0) = ?
[pid 5168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./51/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5170
./strace-static-x86_64: Process 5170 attached
[pid 5170] chdir("./52") = 0
[pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5170] setpgid(0, 0) = 0
[pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5170] write(3, "1000", 4) = 4
[pid 5170] close(3) = 0
[pid 5170] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5170] memfd_create("syzkaller", 0) = 3
[pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5170] munmap(0x7f9904690000, 262144) = 0
[pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 53.744137][ T5168] loop0: detected capacity change from 0 to 512
[ 53.755155][ T5168] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.764896][ T5168] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5170] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5170] close(3) = 0
[pid 5170] mkdir("./file0", 0777) = 0
[pid 5170] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5170] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5170] chdir("./file0") = 0
[pid 5170] ioctl(4, LOOP_CLR_FD) = 0
[pid 5170] close(4) = 0
[pid 5170] exit_group(0) = ?
[pid 5170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./52/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
[ 53.819220][ T5170] loop0: detected capacity change from 0 to 512
[ 53.830910][ T5170] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.840418][ T5170] EXT4-fs (loop0): 1 truncate cleaned up
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=0x555555b855d0) = 5172
./strace-static-x86_64: Process 5172 attached
[pid 5172] chdir("./53") = 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] memfd_create("syzkaller", 0) = 3
[pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5172] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5172] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5172] close(3) = 0
[pid 5172] mkdir("./file0", 0777) = 0
[pid 5172] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5172] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5172] chdir("./file0") = 0
[pid 5172] ioctl(4, LOOP_CLR_FD) = 0
[pid 5172] close(4) = 0
[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=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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./53/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5174
./strace-static-x86_64: Process 5174 attached
[pid 5174] chdir("./54") = 0
[pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5174] setpgid(0, 0) = 0
[pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5174] write(3, "1000", 4) = 4
[pid 5174] close(3) = 0
[pid 5174] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5174] memfd_create("syzkaller", 0) = 3
[pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 53.914807][ T5172] loop0: detected capacity change from 0 to 512
[ 53.927575][ T5172] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 53.937214][ T5172] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5174] munmap(0x7f9904690000, 262144) = 0
[pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5174] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5174] close(3) = 0
[pid 5174] mkdir("./file0", 0777) = 0
[pid 5174] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5174] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5174] chdir("./file0") = 0
[pid 5174] ioctl(4, LOOP_CLR_FD) = 0
[pid 5174] close(4) = 0
[pid 5174] exit_group(0) = ?
[pid 5174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./54/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5176
./strace-static-x86_64: Process 5176 attached
[pid 5176] chdir("./55") = 0
[pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5176] setpgid(0, 0) = 0
[pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5176] write(3, "1000", 4) = 4
[pid 5176] close(3) = 0
[pid 5176] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5176] memfd_create("syzkaller", 0) = 3
[pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5176] munmap(0x7f9904690000, 262144) = 0
[pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 54.002729][ T5174] loop0: detected capacity change from 0 to 512
[ 54.014003][ T5174] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 54.024198][ T5174] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5176] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5176] close(3) = 0
[pid 5176] mkdir("./file0", 0777) = 0
[pid 5176] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5176] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5176] chdir("./file0") = 0
[pid 5176] ioctl(4, LOOP_CLR_FD) = 0
[pid 5176] close(4) = 0
[pid 5176] exit_group(0) = ?
[pid 5176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./55/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./55") = 0
mkdir("./56", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 54.064741][ T5176] loop0: detected capacity change from 0 to 512
[ 54.069438][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 54.084270][ T5176] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 54.094364][ T5176] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5178 attached
, child_tidptr=0x555555b855d0) = 5178
[pid 5178] chdir("./56") = 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] memfd_create("syzkaller", 0) = 3
[pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5178] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5178] close(3) = 0
[pid 5178] mkdir("./file0", 0777) = 0
[ 54.219926][ T5178] loop0: detected capacity change from 0 to 512
[ 54.231442][ T5178] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 54.240770][ T5178]
[ 54.243092][ T5178] ======================================================
[ 54.250115][ T5178] WARNING: possible circular locking dependency detected
[ 54.257117][ T5178] 6.2.0-rc3-syzkaller-00376-g7c6984405241 #0 Not tainted
[ 54.264119][ T5178] ------------------------------------------------------
[ 54.271121][ T5178] syz-executor201/5178 is trying to acquire lock:
[ 54.277510][ T5178] ffff888072d0f5a8 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x51/0x570
[ 54.286400][ T5178]
[ 54.286400][ T5178] but task is already holding lock:
[ 54.293778][ T5178] ffff8880769b34b0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0xf85/0x15d0
[ 54.303104][ T5178]
[ 54.303104][ T5178] which lock already depends on the new lock.
[ 54.303104][ T5178]
[ 54.313590][ T5178]
[ 54.313590][ T5178] the existing dependency chain (in reverse order) is:
[ 54.322679][ T5178]
[ 54.322679][ T5178] -> #2 (&ei->i_data_sem/2){++++}-{3:3}:
[ 54.330507][ T5178] down_read+0x9c/0x450
[ 54.335177][ T5178] ext4_map_blocks+0x267/0x18d0
[ 54.340563][ T5178] ext4_getblk+0x5f6/0x7a0
[ 54.345487][ T5178] ext4_bread+0x2e/0x190
[ 54.350249][ T5178] ext4_quota_write+0x218/0x620
[ 54.355632][ T5178] write_blk+0x12e/0x220
[ 54.360401][ T5178] get_free_dqblk+0x104/0x2f0
[ 54.365586][ T5178] do_insert_tree+0x3c5/0x12d0
[ 54.370860][ T5178] do_insert_tree+0x696/0x12d0
[ 54.376136][ T5178] do_insert_tree+0x696/0x12d0
[ 54.381420][ T5178] do_insert_tree+0x696/0x12d0
[ 54.386714][ T5178] qtree_write_dquot+0x3b4/0x570
[ 54.392188][ T5178] v2_write_dquot+0x120/0x250
[ 54.397374][ T5178] dquot_acquire+0x3d1/0x6c0
[ 54.402470][ T5178] ext4_acquire_dquot+0x2b1/0x3d0
[ 54.408001][ T5178] dqget+0x67d/0x1080
[ 54.412578][ T5178] __dquot_initialize+0x560/0xbe0
[ 54.418117][ T5178] ext4_process_orphan+0x47/0x410
[ 54.423734][ T5178] ext4_orphan_cleanup+0x6fb/0x10f0
[ 54.429436][ T5178] ext4_fill_super+0x9f20/0xb220
[ 54.434882][ T5178] get_tree_bdev+0x444/0x760
[ 54.439985][ T5178] vfs_get_tree+0x8d/0x2f0
[ 54.444908][ T5178] path_mount+0x132a/0x1e20
[ 54.449920][ T5178] __x64_sys_mount+0x283/0x300
[ 54.455194][ T5178] do_syscall_64+0x39/0xb0
[ 54.460294][ T5178] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 54.466700][ T5178]
[ 54.466700][ T5178] -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}:
[ 54.474802][ T5178] down_read+0x9c/0x450
[ 54.479465][ T5178] v2_read_dquot+0x4d/0x120
[ 54.484482][ T5178] dquot_acquire+0x1b3/0x6c0
[ 54.489757][ T5178] ext4_acquire_dquot+0x2b1/0x3d0
[ 54.495290][ T5178] dqget+0x67d/0x1080
[ 54.499970][ T5178] __dquot_initialize+0x560/0xbe0
[ 54.505502][ T5178] ext4_process_orphan+0x47/0x410
[ 54.511031][ T5178] ext4_orphan_cleanup+0x6fb/0x10f0
[ 54.516734][ T5178] ext4_fill_super+0x9f20/0xb220
[ 54.522178][ T5178] get_tree_bdev+0x444/0x760
[ 54.527344][ T5178] vfs_get_tree+0x8d/0x2f0
[ 54.532267][ T5178] path_mount+0x132a/0x1e20
[ 54.537287][ T5178] __x64_sys_mount+0x283/0x300
[ 54.542600][ T5178] do_syscall_64+0x39/0xb0
[ 54.547557][ T5178] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 54.554165][ T5178]
[ 54.554165][ T5178] -> #0 (&dquot->dq_lock){+.+.}-{3:3}:
[ 54.561787][ T5178] __lock_acquire+0x2a43/0x56d0
[ 54.567165][ T5178] lock_acquire+0x1e3/0x630
[ 54.572176][ T5178] __mutex_lock+0x12f/0x1360
[ 54.577278][ T5178] dquot_commit+0x51/0x570
[ 54.582207][ T5178] ext4_write_dquot+0x25f/0x330
[ 54.587580][ T5178] ext4_mark_dquot_dirty+0x115/0x1b0
[ 54.593368][ T5178] __dquot_free_space+0x773/0xaf0
[ 54.598903][ T5178] ext4_free_blocks+0x11ca/0x2300
[ 54.604438][ T5178] ext4_ext_remove_space+0x203c/0x46e0
[ 54.610429][ T5178] ext4_ext_truncate+0x34b/0x400
[ 54.615961][ T5178] ext4_truncate+0xfea/0x15d0
[ 54.621154][ T5178] ext4_process_orphan+0x158/0x410
[ 54.626867][ T5178] ext4_orphan_cleanup+0x6fb/0x10f0
[ 54.632595][ T5178] ext4_fill_super+0x9f20/0xb220
[ 54.638042][ T5178] get_tree_bdev+0x444/0x760
[ 54.643147][ T5178] vfs_get_tree+0x8d/0x2f0
[ 54.648117][ T5178] path_mount+0x132a/0x1e20
[ 54.653158][ T5178] __x64_sys_mount+0x283/0x300
[ 54.658619][ T5178] do_syscall_64+0x39/0xb0
[ 54.663545][ T5178] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 54.669958][ T5178]
[ 54.669958][ T5178] other info that might help us debug this:
[ 54.669958][ T5178]
[ 54.680253][ T5178] Chain exists of:
[ 54.680253][ T5178] &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2
[ 54.680253][ T5178]
[ 54.693904][ T5178] Possible unsafe locking scenario:
[ 54.693904][ T5178]
[ 54.701368][ T5178] CPU0 CPU1
[ 54.706732][ T5178] ---- ----
[ 54.712076][ T5178] lock(&ei->i_data_sem/2);
[ 54.716655][ T5178] lock(&s->s_dquot.dqio_sem);
[ 54.724026][ T5178] lock(&ei->i_data_sem/2);
[ 54.731122][ T5178] lock(&dquot->dq_lock);
[ 54.735570][ T5178]
[ 54.735570][ T5178] *** DEADLOCK ***
[ 54.735570][ T5178]
[ 54.743725][ T5178] 4 locks held by syz-executor201/5178:
[ 54.749252][ T5178] #0: ffff88802bb360e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb60
[ 54.759513][ T5178] #1: ffff8880769b3628 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_process_orphan+0x109/0x410
[ 54.770517][ T5178] #2: ffff8880769b34b0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0xf85/0x15d0
[ 54.780256][ T5178] #3: ffffffff8c975f28 (dquot_srcu){....}-{0:0}, at: __dquot_free_space+0x1a8/0xaf0
[ 54.789955][ T5178]
[ 54.789955][ T5178] stack backtrace:
[ 54.795824][ T5178] CPU: 1 PID: 5178 Comm: syz-executor201 Not tainted 6.2.0-rc3-syzkaller-00376-g7c6984405241 #0
[ 54.806216][ T5178] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 54.816360][ T5178] Call Trace:
[ 54.819642][ T5178]
[ 54.822570][ T5178] dump_stack_lvl+0xd1/0x138
[ 54.827170][ T5178] check_noncircular+0x25f/0x2e0
[ 54.832092][ T5178] ? print_circular_bug+0x1e0/0x1e0
[ 54.837275][ T5178] ? __lockdep_reset_lock+0x1a0/0x1a0
[ 54.842652][ T5178] __lock_acquire+0x2a43/0x56d0
[ 54.847534][ T5178] ? lockdep_hardirqs_on_prepare+0x410/0x410
[ 54.853504][ T5178] ? check_path.constprop.0+0x24/0x50
[ 54.858876][ T5178] lock_acquire+0x1e3/0x630
[ 54.863391][ T5178] ? dquot_commit+0x51/0x570
[ 54.867972][ T5178] ? lock_release+0x810/0x810
[ 54.872648][ T5178] __mutex_lock+0x12f/0x1360
[ 54.877264][ T5178] ? dquot_commit+0x51/0x570
[ 54.881842][ T5178] ? dquot_commit+0x51/0x570
[ 54.886424][ T5178] ? lockdep_hardirqs_on_prepare+0x410/0x410
[ 54.892417][ T5178] ? mutex_lock_io_nested+0x11a0/0x11a0
[ 54.897957][ T5178] dquot_commit+0x51/0x570
[ 54.902376][ T5178] ? ext4_write_dquot+0x236/0x330
[ 54.907390][ T5178] ext4_write_dquot+0x25f/0x330
[ 54.912227][ T5178] ext4_mark_dquot_dirty+0x115/0x1b0
[ 54.917515][ T5178] __dquot_free_space+0x773/0xaf0
[ 54.922546][ T5178] ? dquot_reclaim_space_nodirty+0x6a0/0x6a0
[ 54.928514][ T5178] ? ext4_free_blocks+0x16d2/0x2300
[ 54.933697][ T5178] ? lock_downgrade+0x6e0/0x6e0
[ 54.938532][ T5178] ext4_free_blocks+0x11ca/0x2300
[ 54.943544][ T5178] ? ext4_mb_new_blocks+0x50f0/0x50f0
[ 54.948904][ T5178] ext4_ext_remove_space+0x203c/0x46e0
[ 54.954382][ T5178] ? ext4_ext_index_trans_blocks+0x160/0x160
[ 54.960350][ T5178] ? ext4_es_remove_extent+0x10a/0x510
[ 54.966148][ T5178] ? ext4_es_lookup_extent+0xe00/0xe00
[ 54.971609][ T5178] ? down_write+0x157/0x220
[ 54.976115][ T5178] ext4_ext_truncate+0x34b/0x400
[ 54.981046][ T5178] ext4_truncate+0xfea/0x15d0
[ 54.985721][ T5178] ? ext4_punch_hole+0x1260/0x1260
[ 54.990830][ T5178] ? down_write_killable+0x250/0x250
[ 54.996100][ T5178] ? __brelse+0x88/0xa0
[ 55.000249][ T5178] ext4_process_orphan+0x158/0x410
[ 55.005363][ T5178] ext4_orphan_cleanup+0x6fb/0x10f0
[ 55.010560][ T5178] ? ext4_process_orphan+0x410/0x410
[ 55.015846][ T5178] ext4_fill_super+0x9f20/0xb220
[ 55.020819][ T5178] ? ext4_reconfigure+0x2a50/0x2a50
[ 55.026054][ T5178] ? snprintf+0xbf/0x100
[ 55.030289][ T5178] ? vsprintf+0x30/0x30
[ 55.034434][ T5178] ? wait_for_completion_io_timeout+0x20/0x20
[ 55.040498][ T5178] get_tree_bdev+0x444/0x760
[ 55.045077][ T5178] ? ext4_reconfigure+0x2a50/0x2a50
[ 55.050265][ T5178] vfs_get_tree+0x8d/0x2f0
[ 55.054670][ T5178] path_mount+0x132a/0x1e20
[ 55.059186][ T5178] ? kmem_cache_free+0xee/0x5c0
[ 55.064137][ T5178] ? finish_automount+0x960/0x960
[ 55.069153][ T5178] ? putname+0x102/0x140
[ 55.073388][ T5178] __x64_sys_mount+0x283/0x300
[ 55.078141][ T5178] ? copy_mnt_ns+0xb30/0xb30
[ 55.082723][ T5178] ? lockdep_hardirqs_on+0x7d/0x100
[ 55.087909][ T5178] ? _raw_spin_unlock_irq+0x2e/0x50
[ 55.093096][ T5178] ? ptrace_notify+0xfe/0x140
[ 55.097760][ T5178] do_syscall_64+0x39/0xb0
[ 55.102168][ T5178] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 55.108046][ T5178] RIP: 0033:0x7f990caded1a
[ 55.112449][ T5178] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
[ 55.132062][ T5178] RSP: 002b:00007ffcb33ec6c8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
[ 55.140458][ T5178] RAX: ffffffffffffffda RBX: 0000555555b852c0 RCX: 00007f990caded1a
[ 55.148412][ T5178] RDX: 0000000020000140 RSI: 0000000020000000 RDI: 00007ffcb33ec710
[ 55.156375][ T5178] RBP: 0000000000000000 R08: 00007ffcb33ec750 R09: 00000000000004ae
[ 55.164352][ T5178] R10: 0000000000000047 R11: 0000000000000206 R12: 0000000000000004
[pid 5178] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5178] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5178] chdir("./file0") = 0
[pid 5178] ioctl(4, LOOP_CLR_FD) = 0
[pid 5178] close(4) = 0
[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 */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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
[ 55.172310][ T5178] R13: 00007ffcb33ec750 R14: 0000000000000003 R15: 00007ffcb33ec710
[ 55.180280][ T5178]
[ 55.185498][ T5178] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./56/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5180
./strace-static-x86_64: Process 5180 attached
[pid 5180] chdir("./57") = 0
[pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5180] setpgid(0, 0) = 0
[pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5180] write(3, "1000", 4) = 4
[pid 5180] close(3) = 0
[pid 5180] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5180] memfd_create("syzkaller", 0) = 3
[pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5180] munmap(0x7f9904690000, 262144) = 0
[pid 5180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5180] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5180] close(3) = 0
[pid 5180] mkdir("./file0", 0777) = 0
[pid 5180] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5180] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5180] chdir("./file0") = 0
[pid 5180] ioctl(4, LOOP_CLR_FD) = 0
[pid 5180] close(4) = 0
[pid 5180] exit_group(0) = ?
[pid 5180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./57/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5182
./strace-static-x86_64: Process 5182 attached
[pid 5182] chdir("./58") = 0
[pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5182] setpgid(0, 0) = 0
[pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5182] write(3, "1000", 4) = 4
[pid 5182] close(3) = 0
[ 55.257226][ T5180] loop0: detected capacity change from 0 to 512
[ 55.267676][ T5180] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.276049][ T5180] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5182] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5182] memfd_create("syzkaller", 0) = 3
[pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5182] munmap(0x7f9904690000, 262144) = 0
[pid 5182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5182] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5182] close(3) = 0
[pid 5182] mkdir("./file0", 0777) = 0
[pid 5182] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5182] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5182] chdir("./file0") = 0
[pid 5182] ioctl(4, LOOP_CLR_FD) = 0
[pid 5182] close(4) = 0
[pid 5182] exit_group(0) = ?
[pid 5182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 55.324178][ T5182] loop0: detected capacity change from 0 to 512
[ 55.334185][ T5182] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.342683][ T5182] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./58/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5184
./strace-static-x86_64: Process 5184 attached
[pid 5184] chdir("./59") = 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] memfd_create("syzkaller", 0) = 3
[pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5184] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5184] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5184] close(3) = 0
[pid 5184] mkdir("./file0", 0777) = 0
[pid 5184] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5184] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5184] chdir("./file0") = 0
[pid 5184] ioctl(4, LOOP_CLR_FD) = 0
[pid 5184] close(4) = 0
[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("./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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./59/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5186
./strace-static-x86_64: Process 5186 attached
[pid 5186] chdir("./60") = 0
[pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5186] setpgid(0, 0) = 0
[pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5186] write(3, "1000", 4) = 4
[pid 5186] close(3) = 0
[pid 5186] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5186] memfd_create("syzkaller", 0) = 3
[pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5186] munmap(0x7f9904690000, 262144) = 0
[ 55.402456][ T5184] loop0: detected capacity change from 0 to 512
[ 55.412329][ T5184] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.420845][ T5184] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5186] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5186] close(3) = 0
[pid 5186] mkdir("./file0", 0777) = 0
[pid 5186] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5186] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5186] chdir("./file0") = 0
[pid 5186] ioctl(4, LOOP_CLR_FD) = 0
[pid 5186] close(4) = 0
[pid 5186] exit_group(0) = ?
[pid 5186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./60/file0") = 0
getdents64(3, 0x555555b86620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5188
./strace-static-x86_64: Process 5188 attached
[pid 5188] chdir("./61") = 0
[pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5188] setpgid(0, 0) = 0
[pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5188] write(3, "1000", 4) = 4
[pid 5188] close(3) = 0
[pid 5188] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5188] memfd_create("syzkaller", 0) = 3
[pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 55.463644][ T5186] loop0: detected capacity change from 0 to 512
[ 55.465197][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 55.481733][ T5186] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.490502][ T5186] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5188] munmap(0x7f9904690000, 262144) = 0
[pid 5188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5188] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5188] close(3) = 0
[pid 5188] mkdir("./file0", 0777) = 0
[pid 5188] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5188] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5188] chdir("./file0") = 0
[pid 5188] ioctl(4, LOOP_CLR_FD) = 0
[pid 5188] close(4) = 0
[pid 5188] exit_group(0) = ?
[pid 5188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./61/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5190
./strace-static-x86_64: Process 5190 attached
[pid 5190] chdir("./62") = 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] memfd_create("syzkaller", 0) = 3
[pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.548889][ T5188] loop0: detected capacity change from 0 to 512
[ 55.551063][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 55.567592][ T5188] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.579324][ T5188] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5190] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5190] close(3) = 0
[pid 5190] mkdir("./file0", 0777) = 0
[pid 5190] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5190] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5190] chdir("./file0") = 0
[pid 5190] ioctl(4, LOOP_CLR_FD) = 0
[pid 5190] close(4) = 0
[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=1 /* 0.01 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./62/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
[ 55.622195][ T5190] loop0: detected capacity change from 0 to 512
[ 55.631443][ T5190] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.639877][ T5190] EXT4-fs (loop0): 1 truncate cleaned up
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=0x555555b855d0) = 5192
./strace-static-x86_64: Process 5192 attached
[pid 5192] chdir("./63") = 0
[pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5192] setpgid(0, 0) = 0
[pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5192] write(3, "1000", 4) = 4
[pid 5192] close(3) = 0
[pid 5192] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5192] memfd_create("syzkaller", 0) = 3
[pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5192] munmap(0x7f9904690000, 262144) = 0
[pid 5192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5192] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5192] close(3) = 0
[pid 5192] mkdir("./file0", 0777) = 0
[pid 5192] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5192] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5192] chdir("./file0") = 0
[pid 5192] ioctl(4, LOOP_CLR_FD) = 0
[pid 5192] close(4) = 0
[pid 5192] exit_group(0) = ?
[pid 5192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./63/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5194
./strace-static-x86_64: Process 5194 attached
[pid 5194] chdir("./64") = 0
[pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5194] setpgid(0, 0) = 0
[pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5194] write(3, "1000", 4) = 4
[pid 5194] close(3) = 0
[pid 5194] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5194] memfd_create("syzkaller", 0) = 3
[pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5194] munmap(0x7f9904690000, 262144) = 0
[pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.697776][ T5192] loop0: detected capacity change from 0 to 512
[ 55.707717][ T5192] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.716029][ T5192] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5194] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5194] close(3) = 0
[pid 5194] mkdir("./file0", 0777) = 0
[pid 5194] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5194] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5194] chdir("./file0") = 0
[pid 5194] ioctl(4, LOOP_CLR_FD) = 0
[pid 5194] close(4) = 0
[pid 5194] exit_group(0) = ?
[pid 5194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./64/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 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] memfd_create("syzkaller", 0) = 3
[pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[ 55.753085][ T5194] loop0: detected capacity change from 0 to 512
[ 55.763426][ T5194] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.771781][ T5194] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5196] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5196] close(3) = 0
[pid 5196] mkdir("./file0", 0777) = 0
[pid 5196] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5196] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5196] chdir("./file0") = 0
[pid 5196] ioctl(4, LOOP_CLR_FD) = 0
[pid 5196] close(4) = 0
[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=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./65/file0") = 0
getdents64(3, 0x555555b86620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5198
./strace-static-x86_64: Process 5198 attached
[pid 5198] chdir("./66") = 0
[pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5198] setpgid(0, 0) = 0
[pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5198] write(3, "1000", 4) = 4
[pid 5198] close(3) = 0
[pid 5198] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5198] memfd_create("syzkaller", 0) = 3
[pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5198] munmap(0x7f9904690000, 262144) = 0
[pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.814862][ T5196] loop0: detected capacity change from 0 to 512
[ 55.824374][ T5196] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.832992][ T5196] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5198] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5198] close(3) = 0
[pid 5198] mkdir("./file0", 0777) = 0
[pid 5198] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5198] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5198] chdir("./file0") = 0
[pid 5198] ioctl(4, LOOP_CLR_FD) = 0
[pid 5198] close(4) = 0
[pid 5198] exit_group(0) = ?
[pid 5198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./66/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5200
./strace-static-x86_64: Process 5200 attached
[pid 5200] chdir("./67") = 0
[pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5200] setpgid(0, 0) = 0
[pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5200] write(3, "1000", 4) = 4
[pid 5200] close(3) = 0
[pid 5200] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5200] memfd_create("syzkaller", 0) = 3
[pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5200] munmap(0x7f9904690000, 262144) = 0
[pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.862293][ T5198] loop0: detected capacity change from 0 to 512
[ 55.867009][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 55.879756][ T5198] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.888356][ T5198] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5200] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5200] close(3) = 0
[pid 5200] mkdir("./file0", 0777) = 0
[pid 5200] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5200] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5200] chdir("./file0") = 0
[pid 5200] ioctl(4, LOOP_CLR_FD) = 0
[pid 5200] close(4) = 0
[pid 5200] exit_group(0) = ?
[pid 5200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./67/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5202
./strace-static-x86_64: Process 5202 attached
[pid 5202] chdir("./68") = 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] memfd_create("syzkaller", 0) = 3
[pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.929237][ T5200] loop0: detected capacity change from 0 to 512
[ 55.938927][ T5200] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.947766][ T5200] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5202] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5202] close(3) = 0
[pid 5202] mkdir("./file0", 0777) = 0
[pid 5202] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5202] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5202] chdir("./file0") = 0
[pid 5202] ioctl(4, LOOP_CLR_FD) = 0
[pid 5202] close(4) = 0
[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=2 /* 0.02 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./68/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5204
./strace-static-x86_64: Process 5204 attached
[pid 5204] chdir("./69") = 0
[pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5204] setpgid(0, 0) = 0
[pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5204] write(3, "1000", 4) = 4
[pid 5204] close(3) = 0
[pid 5204] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5204] memfd_create("syzkaller", 0) = 3
[pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5204] munmap(0x7f9904690000, 262144) = 0
[pid 5204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.986087][ T5202] loop0: detected capacity change from 0 to 512
[ 55.995106][ T5202] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.003716][ T5202] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5204] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5204] close(3) = 0
[pid 5204] mkdir("./file0", 0777) = 0
[pid 5204] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5204] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5204] chdir("./file0") = 0
[pid 5204] ioctl(4, LOOP_CLR_FD) = 0
[pid 5204] close(4) = 0
[pid 5204] exit_group(0) = ?
[pid 5204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[ 56.040855][ T5204] loop0: detected capacity change from 0 to 512
[ 56.050349][ T5204] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.058699][ T5204] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./69/file0") = 0
getdents64(3, 0x555555b86620 /* 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, child_tidptr=0x555555b855d0) = 5206
./strace-static-x86_64: Process 5206 attached
[pid 5206] chdir("./70") = 0
[pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5206] setpgid(0, 0) = 0
[pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5206] write(3, "1000", 4) = 4
[pid 5206] close(3) = 0
[pid 5206] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5206] memfd_create("syzkaller", 0) = 3
[pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5206] munmap(0x7f9904690000, 262144) = 0
[pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5206] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5206] close(3) = 0
[pid 5206] mkdir("./file0", 0777) = 0
[pid 5206] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5206] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5206] chdir("./file0") = 0
[pid 5206] ioctl(4, LOOP_CLR_FD) = 0
[pid 5206] close(4) = 0
[pid 5206] exit_group(0) = ?
[pid 5206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
[ 56.123317][ T5206] loop0: detected capacity change from 0 to 512
[ 56.132848][ T5206] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.141480][ T5206] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./70/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5208
./strace-static-x86_64: Process 5208 attached
[pid 5208] chdir("./71") = 0
[pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5208] setpgid(0, 0) = 0
[pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5208] write(3, "1000", 4) = 4
[pid 5208] close(3) = 0
[pid 5208] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5208] memfd_create("syzkaller", 0) = 3
[pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5208] munmap(0x7f9904690000, 262144) = 0
[pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5208] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5208] close(3) = 0
[pid 5208] mkdir("./file0", 0777) = 0
[pid 5208] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5208] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5208] chdir("./file0") = 0
[pid 5208] ioctl(4, LOOP_CLR_FD) = 0
[pid 5208] close(4) = 0
[pid 5208] exit_group(0) = ?
[pid 5208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./71/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5210
./strace-static-x86_64: Process 5210 attached
[pid 5210] chdir("./72") = 0
[pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5210] setpgid(0, 0) = 0
[pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5210] write(3, "1000", 4) = 4
[pid 5210] close(3) = 0
[pid 5210] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5210] memfd_create("syzkaller", 0) = 3
[pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5210] munmap(0x7f9904690000, 262144) = 0
[pid 5210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.211110][ T5208] loop0: detected capacity change from 0 to 512
[ 56.220411][ T5208] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.229086][ T5208] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5210] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5210] close(3) = 0
[pid 5210] mkdir("./file0", 0777) = 0
[pid 5210] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5210] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5210] chdir("./file0") = 0
[pid 5210] ioctl(4, LOOP_CLR_FD) = 0
[pid 5210] close(4) = 0
[pid 5210] exit_group(0) = ?
[pid 5210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./72/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./72") = 0
mkdir("./73", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 56.259157][ T5210] loop0: detected capacity change from 0 to 512
[ 56.261707][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 56.277787][ T5210] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.286077][ T5210] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5212
./strace-static-x86_64: Process 5212 attached
[pid 5212] chdir("./73") = 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] memfd_create("syzkaller", 0) = 3
[pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5212] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5212] close(3) = 0
[pid 5212] mkdir("./file0", 0777) = 0
[pid 5212] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5212] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5212] chdir("./file0") = 0
[pid 5212] ioctl(4, LOOP_CLR_FD) = 0
[pid 5212] close(4) = 0
[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=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, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
[ 56.371018][ T5212] loop0: detected capacity change from 0 to 512
[ 56.380650][ T5212] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.388976][ T5212] EXT4-fs (loop0): 1 truncate cleaned up
unlink("./73/binderfs") = 0
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./73/file0") = 0
getdents64(3, 0x555555b86620 /* 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, child_tidptr=0x555555b855d0) = 5214
./strace-static-x86_64: Process 5214 attached
[pid 5214] chdir("./74") = 0
[pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5214] setpgid(0, 0) = 0
[pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5214] write(3, "1000", 4) = 4
[pid 5214] close(3) = 0
[pid 5214] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5214] memfd_create("syzkaller", 0) = 3
[pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5214] munmap(0x7f9904690000, 262144) = 0
[pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5214] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5214] close(3) = 0
[pid 5214] mkdir("./file0", 0777) = 0
[pid 5214] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5214] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5214] chdir("./file0") = 0
[pid 5214] ioctl(4, LOOP_CLR_FD) = 0
[pid 5214] close(4) = 0
[pid 5214] exit_group(0) = ?
[pid 5214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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)
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./74/file0") = 0
getdents64(3, 0x555555b86620 /* 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
[ 56.451228][ T5214] loop0: detected capacity change from 0 to 512
[ 56.461410][ T5214] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.470097][ T5214] EXT4-fs (loop0): 1 truncate cleaned up
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5216
./strace-static-x86_64: Process 5216 attached
[pid 5216] chdir("./75") = 0
[pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5216] setpgid(0, 0) = 0
[pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5216] write(3, "1000", 4) = 4
[pid 5216] close(3) = 0
[pid 5216] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5216] memfd_create("syzkaller", 0) = 3
[pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5216] munmap(0x7f9904690000, 262144) = 0
[pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5216] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5216] close(3) = 0
[pid 5216] mkdir("./file0", 0777) = 0
[pid 5216] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5216] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5216] chdir("./file0") = 0
[pid 5216] ioctl(4, LOOP_CLR_FD) = 0
[pid 5216] close(4) = 0
[pid 5216] exit_group(0) = ?
[pid 5216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./75/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5218
./strace-static-x86_64: Process 5218 attached
[pid 5218] chdir("./76") = 0
[pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5218] setpgid(0, 0) = 0
[pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5218] write(3, "1000", 4) = 4
[pid 5218] close(3) = 0
[pid 5218] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5218] memfd_create("syzkaller", 0) = 3
[pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5218] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5218] munmap(0x7f9904690000, 262144) = 0
[pid 5218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.522537][ T5216] loop0: detected capacity change from 0 to 512
[ 56.532352][ T5216] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.540788][ T5216] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5218] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5218] close(3) = 0
[pid 5218] mkdir("./file0", 0777) = 0
[pid 5218] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5218] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5218] chdir("./file0") = 0
[pid 5218] ioctl(4, LOOP_CLR_FD) = 0
[pid 5218] close(4) = 0
[pid 5218] exit_group(0) = ?
[pid 5218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5218, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./76/file0") = 0
getdents64(3, 0x555555b86620 /* 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, child_tidptr=0x555555b855d0) = 5220
./strace-static-x86_64: Process 5220 attached
[pid 5220] chdir("./77") = 0
[pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5220] setpgid(0, 0) = 0
[pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5220] write(3, "1000", 4) = 4
[pid 5220] close(3) = 0
[pid 5220] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5220] memfd_create("syzkaller", 0) = 3
[pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5220] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5220] munmap(0x7f9904690000, 262144) = 0
[pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.575675][ T5218] loop0: detected capacity change from 0 to 512
[ 56.585300][ T5218] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.594258][ T5218] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5220] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5220] close(3) = 0
[pid 5220] mkdir("./file0", 0777) = 0
[pid 5220] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5220] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5220] chdir("./file0") = 0
[pid 5220] ioctl(4, LOOP_CLR_FD) = 0
[pid 5220] close(4) = 0
[pid 5220] exit_group(0) = ?
[pid 5220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./77/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
[ 56.634755][ T5220] loop0: detected capacity change from 0 to 512
[ 56.644178][ T5220] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.652956][ T5220] EXT4-fs (loop0): 1 truncate cleaned up
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=0x555555b855d0) = 5222
./strace-static-x86_64: Process 5222 attached
[pid 5222] chdir("./78") = 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] memfd_create("syzkaller", 0) = 3
[pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5222] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5222] close(3) = 0
[pid 5222] mkdir("./file0", 0777) = 0
[pid 5222] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5222] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5222] chdir("./file0") = 0
[pid 5222] ioctl(4, LOOP_CLR_FD) = 0
[pid 5222] close(4) = 0
[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 */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./78/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5224
./strace-static-x86_64: Process 5224 attached
[pid 5224] chdir("./79") = 0
[pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5224] setpgid(0, 0) = 0
[pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5224] write(3, "1000", 4) = 4
[pid 5224] close(3) = 0
[pid 5224] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5224] memfd_create("syzkaller", 0) = 3
[pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5224] munmap(0x7f9904690000, 262144) = 0
[pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.704792][ T5222] loop0: detected capacity change from 0 to 512
[ 56.714363][ T5222] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.723512][ T5222] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5224] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5224] close(3) = 0
[pid 5224] mkdir("./file0", 0777) = 0
[pid 5224] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5224] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5224] chdir("./file0") = 0
[pid 5224] ioctl(4, LOOP_CLR_FD) = 0
[pid 5224] close(4) = 0
[pid 5224] exit_group(0) = ?
[pid 5224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5224, 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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./79/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5226
./strace-static-x86_64: Process 5226 attached
[pid 5226] chdir("./80") = 0
[pid 5226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5226] setpgid(0, 0) = 0
[pid 5226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5226] write(3, "1000", 4) = 4
[pid 5226] close(3) = 0
[pid 5226] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5226] memfd_create("syzkaller", 0) = 3
[pid 5226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5226] munmap(0x7f9904690000, 262144) = 0
[pid 5226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.760597][ T5224] loop0: detected capacity change from 0 to 512
[ 56.770230][ T5224] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.778664][ T5224] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5226] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5226] close(3) = 0
[pid 5226] mkdir("./file0", 0777) = 0
[pid 5226] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5226] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5226] chdir("./file0") = 0
[pid 5226] ioctl(4, LOOP_CLR_FD) = 0
[pid 5226] close(4) = 0
[pid 5226] exit_group(0) = ?
[pid 5226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5226, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./80/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5228
./strace-static-x86_64: Process 5228 attached
[pid 5228] chdir("./81") = 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] memfd_create("syzkaller", 0) = 3
[pid 5228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5228] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.819580][ T5226] loop0: detected capacity change from 0 to 512
[ 56.829316][ T5226] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.837909][ T5226] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5228] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5228] close(3) = 0
[pid 5228] mkdir("./file0", 0777) = 0
[pid 5228] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5228] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5228] chdir("./file0") = 0
[pid 5228] ioctl(4, LOOP_CLR_FD) = 0
[pid 5228] close(4) = 0
[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=2 /* 0.02 s */} ---
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, 0x555555b86620 /* 4 entries */, 32768) = 112
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, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./81/file0") = 0
getdents64(3, 0x555555b86620 /* 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=0x555555b855d0) = 5230
./strace-static-x86_64: Process 5230 attached
[pid 5230] chdir("./82") = 0
[pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5230] setpgid(0, 0) = 0
[pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5230] write(3, "1000", 4) = 4
[pid 5230] close(3) = 0
[pid 5230] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5230] memfd_create("syzkaller", 0) = 3
[pid 5230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5230] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5230] munmap(0x7f9904690000, 262144) = 0
[pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.864561][ T5228] loop0: detected capacity change from 0 to 512
[ 56.865760][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 56.882658][ T5228] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.891132][ T5228] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5230] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5230] close(3) = 0
[pid 5230] mkdir("./file0", 0777) = 0
[pid 5230] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5230] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5230] chdir("./file0") = 0
[pid 5230] ioctl(4, LOOP_CLR_FD) = 0
[pid 5230] close(4) = 0
[pid 5230] exit_group(0) = ?
[pid 5230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5230, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./82/binderfs") = 0
umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./82/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./82/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./82/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./82") = 0
mkdir("./83", 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=0x555555b855d0) = 5232
./strace-static-x86_64: Process 5232 attached
[pid 5232] chdir("./83") = 0
[pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5232] setpgid(0, 0) = 0
[pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5232] write(3, "1000", 4) = 4
[pid 5232] close(3) = 0
[pid 5232] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5232] memfd_create("syzkaller", 0) = 3
[pid 5232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5232] munmap(0x7f9904690000, 262144) = 0
[pid 5232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.931848][ T5230] loop0: detected capacity change from 0 to 512
[ 56.941565][ T5230] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.949974][ T5230] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5232] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5232] close(3) = 0
[pid 5232] mkdir("./file0", 0777) = 0
[pid 5232] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5232] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5232] chdir("./file0") = 0
[pid 5232] ioctl(4, LOOP_CLR_FD) = 0
[pid 5232] close(4) = 0
[pid 5232] exit_group(0) = ?
[pid 5232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5232, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./83/binderfs") = 0
[ 56.982643][ T5232] loop0: detected capacity change from 0 to 512
[ 56.992646][ T5232] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.001089][ T5232] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./83/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./83/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./83/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./83") = 0
mkdir("./84", 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=0x555555b855d0) = 5234
[pid 5234] chdir("./84") = 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] memfd_create("syzkaller", 0) = 3
[pid 5234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5234] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5234] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5234] close(3) = 0
[pid 5234] mkdir("./file0", 0777) = 0
[pid 5234] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5234] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5234] chdir("./file0") = 0
[pid 5234] ioctl(4, LOOP_CLR_FD) = 0
[pid 5234] close(4) = 0
[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=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./84/binderfs") = 0
umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./84/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./84/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./84/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./84") = 0
mkdir("./85", 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=0x555555b855d0) = 5236
./strace-static-x86_64: Process 5236 attached
[pid 5236] chdir("./85") = 0
[pid 5236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5236] setpgid(0, 0) = 0
[pid 5236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5236] write(3, "1000", 4) = 4
[pid 5236] close(3) = 0
[pid 5236] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5236] memfd_create("syzkaller", 0) = 3
[pid 5236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 57.065790][ T5234] loop0: detected capacity change from 0 to 512
[ 57.075137][ T5234] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.083456][ T5234] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5236] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5236] munmap(0x7f9904690000, 262144) = 0
[pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5236] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5236] close(3) = 0
[pid 5236] mkdir("./file0", 0777) = 0
[pid 5236] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5236] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5236] chdir("./file0") = 0
[pid 5236] ioctl(4, LOOP_CLR_FD) = 0
[pid 5236] close(4) = 0
[pid 5236] exit_group(0) = ?
[pid 5236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5236, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./85/binderfs") = 0
umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./85/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./85/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./85/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./85") = 0
mkdir("./86", 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=0x555555b855d0) = 5238
./strace-static-x86_64: Process 5238 attached
[pid 5238] chdir("./86") = 0
[pid 5238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5238] setpgid(0, 0) = 0
[pid 5238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5238] write(3, "1000", 4) = 4
[pid 5238] close(3) = 0
[pid 5238] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5238] memfd_create("syzkaller", 0) = 3
[pid 5238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5238] munmap(0x7f9904690000, 262144) = 0
[pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.130324][ T5236] loop0: detected capacity change from 0 to 512
[ 57.140220][ T5236] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.148977][ T5236] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5238] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5238] close(3) = 0
[pid 5238] mkdir("./file0", 0777) = 0
[pid 5238] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5238] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5238] chdir("./file0") = 0
[pid 5238] ioctl(4, LOOP_CLR_FD) = 0
[pid 5238] close(4) = 0
[pid 5238] exit_group(0) = ?
[pid 5238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5238, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./86/binderfs") = 0
[ 57.183572][ T5238] loop0: detected capacity change from 0 to 512
[ 57.193087][ T5238] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.201315][ T5238] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./86/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./86/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./86/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./86") = 0
mkdir("./87", 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 5240 attached
[pid 5240] chdir("./87") = 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] memfd_create("syzkaller", 0) = 3
[pid 5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5061] <... clone resumed>, child_tidptr=0x555555b855d0) = 5240
[pid 5240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5240] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5240] close(3) = 0
[pid 5240] mkdir("./file0", 0777) = 0
[pid 5240] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5240] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5240] chdir("./file0") = 0
[pid 5240] ioctl(4, LOOP_CLR_FD) = 0
[pid 5240] close(4) = 0
[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 */} ---
umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./87/binderfs") = 0
umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./87/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./87/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./87/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./87") = 0
mkdir("./88", 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=0x555555b855d0) = 5242
./strace-static-x86_64: Process 5242 attached
[pid 5242] chdir("./88") = 0
[pid 5242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5242] setpgid(0, 0) = 0
[pid 5242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5242] write(3, "1000", 4) = 4
[pid 5242] close(3) = 0
[pid 5242] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5242] memfd_create("syzkaller", 0) = 3
[pid 5242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5242] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5242] munmap(0x7f9904690000, 262144) = 0
[pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.271197][ T5240] loop0: detected capacity change from 0 to 512
[ 57.281260][ T5240] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.290087][ T5240] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5242] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5242] close(3) = 0
[pid 5242] mkdir("./file0", 0777) = 0
[pid 5242] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5242] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5242] chdir("./file0") = 0
[pid 5242] ioctl(4, LOOP_CLR_FD) = 0
[pid 5242] close(4) = 0
[pid 5242] exit_group(0) = ?
[pid 5242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5242, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./88/binderfs") = 0
[ 57.321371][ T5242] loop0: detected capacity change from 0 to 512
[ 57.331041][ T5242] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.339614][ T5242] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./88/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./88/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./88/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./88") = 0
mkdir("./89", 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=0x555555b855d0) = 5244
./strace-static-x86_64: Process 5244 attached
[pid 5244] chdir("./89") = 0
[pid 5244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5244] setpgid(0, 0) = 0
[pid 5244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5244] write(3, "1000", 4) = 4
[pid 5244] close(3) = 0
[pid 5244] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5244] memfd_create("syzkaller", 0) = 3
[pid 5244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5244] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5244] munmap(0x7f9904690000, 262144) = 0
[pid 5244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5244] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5244] close(3) = 0
[pid 5244] mkdir("./file0", 0777) = 0
[pid 5244] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5244] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5244] chdir("./file0") = 0
[pid 5244] ioctl(4, LOOP_CLR_FD) = 0
[pid 5244] close(4) = 0
[pid 5244] exit_group(0) = ?
[pid 5244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./89/binderfs") = 0
umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./89/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./89/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./89/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./89") = 0
mkdir("./90", 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=0x555555b855d0) = 5246
./strace-static-x86_64: Process 5246 attached
[pid 5246] chdir("./90") = 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] memfd_create("syzkaller", 0) = 3
[ 57.397083][ T5244] loop0: detected capacity change from 0 to 512
[ 57.406654][ T5244] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.415152][ T5244] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7f9904690000, 262144) = 0
[pid 5246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5246] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5246] close(3) = 0
[pid 5246] mkdir("./file0", 0777) = 0
[pid 5246] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5246] chdir("./file0") = 0
[pid 5246] ioctl(4, LOOP_CLR_FD) = 0
[pid 5246] close(4) = 0
[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("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./90/binderfs") = 0
umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./90/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./90/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./90/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./90") = 0
mkdir("./91", 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 5248 attached
, child_tidptr=0x555555b855d0) = 5248
[pid 5248] chdir("./91") = 0
[pid 5248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5248] setpgid(0, 0) = 0
[pid 5248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5248] write(3, "1000", 4) = 4
[pid 5248] close(3) = 0
[pid 5248] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5248] memfd_create("syzkaller", 0) = 3
[pid 5248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 57.464708][ T5246] loop0: detected capacity change from 0 to 512
[ 57.474152][ T5246] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.482543][ T5246] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5248] munmap(0x7f9904690000, 262144) = 0
[pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5248] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5248] close(3) = 0
[pid 5248] mkdir("./file0", 0777) = 0
[pid 5248] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5248] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5248] chdir("./file0") = 0
[pid 5248] ioctl(4, LOOP_CLR_FD) = 0
[pid 5248] close(4) = 0
[pid 5248] exit_group(0) = ?
[pid 5248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5248, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./91/binderfs") = 0
umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./91/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./91/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./91/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./91") = 0
mkdir("./92", 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=0x555555b855d0) = 5250
./strace-static-x86_64: Process 5250 attached
[pid 5250] chdir("./92") = 0
[pid 5250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5250] setpgid(0, 0) = 0
[pid 5250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5250] write(3, "1000", 4) = 4
[pid 5250] close(3) = 0
[pid 5250] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5250] memfd_create("syzkaller", 0) = 3
[pid 5250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5250] munmap(0x7f9904690000, 262144) = 0
[pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.528455][ T5248] loop0: detected capacity change from 0 to 512
[ 57.538092][ T5248] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.546952][ T5248] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5250] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5250] close(3) = 0
[pid 5250] mkdir("./file0", 0777) = 0
[pid 5250] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5250] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5250] chdir("./file0") = 0
[pid 5250] ioctl(4, LOOP_CLR_FD) = 0
[pid 5250] close(4) = 0
[pid 5250] exit_group(0) = ?
[pid 5250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5250, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./92/binderfs") = 0
umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[ 57.585316][ T5250] loop0: detected capacity change from 0 to 512
[ 57.594691][ T5250] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.603097][ T5250] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./92/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./92/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./92/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./92") = 0
mkdir("./93", 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=0x555555b855d0) = 5252
./strace-static-x86_64: Process 5252 attached
[pid 5252] chdir("./93") = 0
[pid 5252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5252] setpgid(0, 0) = 0
[pid 5252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5252] write(3, "1000", 4) = 4
[pid 5252] close(3) = 0
[pid 5252] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5252] memfd_create("syzkaller", 0) = 3
[pid 5252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5252] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5252] munmap(0x7f9904690000, 262144) = 0
[pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5252] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5252] close(3) = 0
[pid 5252] mkdir("./file0", 0777) = 0
[pid 5252] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5252] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5252] chdir("./file0") = 0
[pid 5252] ioctl(4, LOOP_CLR_FD) = 0
[pid 5252] close(4) = 0
[pid 5252] exit_group(0) = ?
[pid 5252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5252, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./93/binderfs") = 0
umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./93/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./93/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./93/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./93") = 0
mkdir("./94", 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=0x555555b855d0) = 5254
./strace-static-x86_64: Process 5254 attached
[pid 5254] chdir("./94") = 0
[pid 5254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5254] setpgid(0, 0) = 0
[pid 5254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5254] write(3, "1000", 4) = 4
[pid 5254] close(3) = 0
[pid 5254] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5254] memfd_create("syzkaller", 0) = 3
[pid 5254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5254] munmap(0x7f9904690000, 262144) = 0
[pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.668287][ T5252] loop0: detected capacity change from 0 to 512
[ 57.677716][ T5252] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.687121][ T5252] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5254] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5254] close(3) = 0
[pid 5254] mkdir("./file0", 0777) = 0
[pid 5254] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5254] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5254] chdir("./file0") = 0
[pid 5254] ioctl(4, LOOP_CLR_FD) = 0
[pid 5254] close(4) = 0
[pid 5254] exit_group(0) = ?
[pid 5254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5254, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./94/binderfs") = 0
umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./94/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./94/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./94/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./94") = 0
mkdir("./95", 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=0x555555b855d0) = 5256
[ 57.726909][ T5254] loop0: detected capacity change from 0 to 512
[ 57.736514][ T5254] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.744733][ T5254] EXT4-fs (loop0): 1 truncate cleaned up
./strace-static-x86_64: Process 5256 attached
[pid 5256] chdir("./95") = 0
[pid 5256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5256] setpgid(0, 0) = 0
[pid 5256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5256] write(3, "1000", 4) = 4
[pid 5256] close(3) = 0
[pid 5256] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5256] memfd_create("syzkaller", 0) = 3
[pid 5256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5256] munmap(0x7f9904690000, 262144) = 0
[pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5256] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5256] close(3) = 0
[pid 5256] mkdir("./file0", 0777) = 0
[pid 5256] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5256] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5256] chdir("./file0") = 0
[pid 5256] ioctl(4, LOOP_CLR_FD) = 0
[pid 5256] close(4) = 0
[pid 5256] exit_group(0) = ?
[pid 5256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5256, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./95", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./95/binderfs") = 0
umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./95/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./95/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./95/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./95") = 0
mkdir("./96", 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=0x555555b855d0) = 5258
./strace-static-x86_64: Process 5258 attached
[pid 5258] chdir("./96") = 0
[pid 5258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5258] setpgid(0, 0) = 0
[pid 5258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5258] write(3, "1000", 4) = 4
[pid 5258] close(3) = 0
[pid 5258] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5258] memfd_create("syzkaller", 0) = 3
[pid 5258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5258] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5258] munmap(0x7f9904690000, 262144) = 0
[pid 5258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.796782][ T5256] loop0: detected capacity change from 0 to 512
[ 57.806002][ T5256] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.814736][ T5256] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5258] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5258] close(3) = 0
[pid 5258] mkdir("./file0", 0777) = 0
[pid 5258] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5258] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5258] chdir("./file0") = 0
[pid 5258] ioctl(4, LOOP_CLR_FD) = 0
[pid 5258] close(4) = 0
[pid 5258] exit_group(0) = ?
[pid 5258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5258, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./96/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./96/binderfs") = 0
umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./96/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./96/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./96/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./96") = 0
mkdir("./97", 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 5260 attached
, child_tidptr=0x555555b855d0) = 5260
[pid 5260] chdir("./97") = 0
[pid 5260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5260] setpgid(0, 0) = 0
[pid 5260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5260] write(3, "1000", 4) = 4
[pid 5260] close(3) = 0
[pid 5260] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5260] memfd_create("syzkaller", 0) = 3
[pid 5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 57.853462][ T5258] loop0: detected capacity change from 0 to 512
[ 57.862793][ T5258] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.871404][ T5258] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5260] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5260] munmap(0x7f9904690000, 262144) = 0
[pid 5260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5260] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5260] close(3) = 0
[pid 5260] mkdir("./file0", 0777) = 0
[pid 5260] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5260] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5260] chdir("./file0") = 0
[pid 5260] ioctl(4, LOOP_CLR_FD) = 0
[pid 5260] close(4) = 0
[pid 5260] exit_group(0) = ?
[pid 5260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5260, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./97", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./97/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./97/binderfs") = 0
umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./97/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./97/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./97/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./97") = 0
mkdir("./98", 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=0x555555b855d0) = 5262
./strace-static-x86_64: Process 5262 attached
[pid 5262] chdir("./98") = 0
[pid 5262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5262] setpgid(0, 0) = 0
[pid 5262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5262] write(3, "1000", 4) = 4
[pid 5262] close(3) = 0
[pid 5262] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5262] memfd_create("syzkaller", 0) = 3
[pid 5262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5262] munmap(0x7f9904690000, 262144) = 0
[pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.917518][ T5260] loop0: detected capacity change from 0 to 512
[ 57.927381][ T5260] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.935658][ T5260] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5262] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5262] close(3) = 0
[pid 5262] mkdir("./file0", 0777) = 0
[pid 5262] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5262] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5262] chdir("./file0") = 0
[pid 5262] ioctl(4, LOOP_CLR_FD) = 0
[pid 5262] close(4) = 0
[pid 5262] exit_group(0) = ?
[pid 5262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5262, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./98", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./98/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./98/binderfs") = 0
umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./98/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./98/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./98/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./98") = 0
mkdir("./99", 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=0x555555b855d0) = 5264
./strace-static-x86_64: Process 5264 attached
[pid 5264] chdir("./99") = 0
[pid 5264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5264] setpgid(0, 0) = 0
[pid 5264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5264] write(3, "1000", 4) = 4
[pid 5264] close(3) = 0
[pid 5264] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5264] memfd_create("syzkaller", 0) = 3
[pid 5264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5264] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5264] munmap(0x7f9904690000, 262144) = 0
[pid 5264] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.971617][ T5262] loop0: detected capacity change from 0 to 512
[ 57.981907][ T5262] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.990703][ T5262] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5264] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5264] close(3) = 0
[pid 5264] mkdir("./file0", 0777) = 0
[pid 5264] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5264] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5264] chdir("./file0") = 0
[pid 5264] ioctl(4, LOOP_CLR_FD) = 0
[pid 5264] close(4) = 0
[pid 5264] exit_group(0) = ?
[pid 5264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5264, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./99", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./99/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./99/binderfs") = 0
umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./99/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./99/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./99/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./99") = 0
mkdir("./100", 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=0x555555b855d0) = 5266
./strace-static-x86_64: Process 5266 attached
[pid 5266] chdir("./100") = 0
[pid 5266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5266] setpgid(0, 0) = 0
[pid 5266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5266] write(3, "1000", 4) = 4
[pid 5266] close(3) = 0
[pid 5266] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5266] memfd_create("syzkaller", 0) = 3
[pid 5266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5266] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5266] munmap(0x7f9904690000, 262144) = 0
[pid 5266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.029618][ T5264] loop0: detected capacity change from 0 to 512
[ 58.039585][ T5264] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.048434][ T5264] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5266] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5266] close(3) = 0
[pid 5266] mkdir("./file0", 0777) = 0
[pid 5266] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5266] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5266] chdir("./file0") = 0
[pid 5266] ioctl(4, LOOP_CLR_FD) = 0
[pid 5266] close(4) = 0
[pid 5266] exit_group(0) = ?
[pid 5266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5266, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./100", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./100/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./100/binderfs") = 0
[ 58.082873][ T5266] loop0: detected capacity change from 0 to 512
[ 58.092603][ T5266] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.101251][ T5266] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./100/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./100/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./100/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./100") = 0
mkdir("./101", 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=0x555555b855d0) = 5268
./strace-static-x86_64: Process 5268 attached
[pid 5268] chdir("./101") = 0
[pid 5268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5268] setpgid(0, 0) = 0
[pid 5268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5268] write(3, "1000", 4) = 4
[pid 5268] close(3) = 0
[pid 5268] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5268] memfd_create("syzkaller", 0) = 3
[pid 5268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5268] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5268] munmap(0x7f9904690000, 262144) = 0
[pid 5268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5268] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5268] close(3) = 0
[pid 5268] mkdir("./file0", 0777) = 0
[pid 5268] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5268] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5268] chdir("./file0") = 0
[pid 5268] ioctl(4, LOOP_CLR_FD) = 0
[pid 5268] close(4) = 0
[pid 5268] exit_group(0) = ?
[pid 5268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5268, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./101", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./101/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./101/binderfs") = 0
umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./101/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./101/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./101/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./101") = 0
mkdir("./102", 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=0x555555b855d0) = 5270
./strace-static-x86_64: Process 5270 attached
[pid 5270] chdir("./102") = 0
[pid 5270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5270] setpgid(0, 0) = 0
[pid 5270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5270] write(3, "1000", 4) = 4
[pid 5270] close(3) = 0
[pid 5270] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5270] memfd_create("syzkaller", 0) = 3
[pid 5270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 58.169828][ T5268] loop0: detected capacity change from 0 to 512
[ 58.179403][ T5268] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.188300][ T5268] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5270] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5270] munmap(0x7f9904690000, 262144) = 0
[pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5270] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5270] close(3) = 0
[pid 5270] mkdir("./file0", 0777) = 0
[pid 5270] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5270] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5270] chdir("./file0") = 0
[pid 5270] ioctl(4, LOOP_CLR_FD) = 0
[pid 5270] close(4) = 0
[pid 5270] exit_group(0) = ?
[pid 5270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5270, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./102", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./102/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./102/binderfs") = 0
umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./102/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./102/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./102/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./102") = 0
mkdir("./103", 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=0x555555b855d0) = 5272
./strace-static-x86_64: Process 5272 attached
[pid 5272] chdir("./103") = 0
[pid 5272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5272] setpgid(0, 0) = 0
[pid 5272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5272] write(3, "1000", 4) = 4
[pid 5272] close(3) = 0
[pid 5272] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5272] memfd_create("syzkaller", 0) = 3
[pid 5272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5272] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5272] munmap(0x7f9904690000, 262144) = 0
[pid 5272] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.234557][ T5270] loop0: detected capacity change from 0 to 512
[ 58.243787][ T5270] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.252432][ T5270] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5272] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5272] close(3) = 0
[pid 5272] mkdir("./file0", 0777) = 0
[pid 5272] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5272] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5272] chdir("./file0") = 0
[pid 5272] ioctl(4, LOOP_CLR_FD) = 0
[pid 5272] close(4) = 0
[pid 5272] exit_group(0) = ?
[pid 5272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5272, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./103", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./103/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./103/binderfs") = 0
umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./103/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./103/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./103/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./103") = 0
mkdir("./104", 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=0x555555b855d0) = 5274
./strace-static-x86_64: Process 5274 attached
[pid 5274] chdir("./104") = 0
[pid 5274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5274] setpgid(0, 0) = 0
[pid 5274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5274] write(3, "1000", 4) = 4
[pid 5274] close(3) = 0
[pid 5274] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5274] memfd_create("syzkaller", 0) = 3
[pid 5274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5274] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5274] munmap(0x7f9904690000, 262144) = 0
[pid 5274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.287896][ T5272] loop0: detected capacity change from 0 to 512
[ 58.297437][ T5272] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.305899][ T5272] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5274] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5274] close(3) = 0
[pid 5274] mkdir("./file0", 0777) = 0
[pid 5274] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5274] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5274] chdir("./file0") = 0
[pid 5274] ioctl(4, LOOP_CLR_FD) = 0
[pid 5274] close(4) = 0
[pid 5274] exit_group(0) = ?
[pid 5274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5274, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./104", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./104/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./104/binderfs") = 0
umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./104/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./104/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./104/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./104") = 0
mkdir("./105", 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 5276 attached
, child_tidptr=0x555555b855d0) = 5276
[pid 5276] chdir("./105") = 0
[pid 5276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5276] setpgid(0, 0) = 0
[pid 5276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5276] write(3, "1000", 4) = 4
[pid 5276] close(3) = 0
[pid 5276] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5276] memfd_create("syzkaller", 0) = 3
[ 58.347312][ T5274] loop0: detected capacity change from 0 to 512
[ 58.357012][ T5274] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.365233][ T5274] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5276] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5276] munmap(0x7f9904690000, 262144) = 0
[pid 5276] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5276] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5276] close(3) = 0
[pid 5276] mkdir("./file0", 0777) = 0
[pid 5276] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5276] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5276] chdir("./file0") = 0
[pid 5276] ioctl(4, LOOP_CLR_FD) = 0
[pid 5276] close(4) = 0
[pid 5276] exit_group(0) = ?
[pid 5276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5276, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./105", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./105/binderfs") = 0
umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./105/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./105/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./105/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./105") = 0
mkdir("./106", 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=0x555555b855d0) = 5278
./strace-static-x86_64: Process 5278 attached
[pid 5278] chdir("./106") = 0
[pid 5278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5278] setpgid(0, 0) = 0
[pid 5278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5278] write(3, "1000", 4) = 4
[pid 5278] close(3) = 0
[pid 5278] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5278] memfd_create("syzkaller", 0) = 3
[pid 5278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 58.411505][ T5276] loop0: detected capacity change from 0 to 512
[ 58.421503][ T5276] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.430132][ T5276] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5278] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5278] munmap(0x7f9904690000, 262144) = 0
[pid 5278] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5278] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5278] close(3) = 0
[pid 5278] mkdir("./file0", 0777) = 0
[pid 5278] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5278] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5278] chdir("./file0") = 0
[pid 5278] ioctl(4, LOOP_CLR_FD) = 0
[pid 5278] close(4) = 0
[pid 5278] exit_group(0) = ?
[pid 5278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5278, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./106/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./106/binderfs") = 0
umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 58.475030][ T5278] loop0: detected capacity change from 0 to 512
[ 58.484868][ T5278] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.492785][ T5278] EXT4-fs (loop0): 1 truncate cleaned up
lstat("./106/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./106/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./106/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./106") = 0
mkdir("./107", 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=0x555555b855d0) = 5280
./strace-static-x86_64: Process 5280 attached
[pid 5280] chdir("./107") = 0
[pid 5280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5280] setpgid(0, 0) = 0
[pid 5280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5280] write(3, "1000", 4) = 4
[pid 5280] close(3) = 0
[pid 5280] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5280] memfd_create("syzkaller", 0) = 3
[pid 5280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5280] munmap(0x7f9904690000, 262144) = 0
[pid 5280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5280] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5280] close(3) = 0
[pid 5280] mkdir("./file0", 0777) = 0
[pid 5280] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5280] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5280] chdir("./file0") = 0
[pid 5280] ioctl(4, LOOP_CLR_FD) = 0
[pid 5280] close(4) = 0
[pid 5280] exit_group(0) = ?
[pid 5280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5280, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./107/binderfs") = 0
umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./107/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./107/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./107/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./107") = 0
mkdir("./108", 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=0x555555b855d0) = 5282
./strace-static-x86_64: Process 5282 attached
[pid 5282] chdir("./108") = 0
[pid 5282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5282] setpgid(0, 0) = 0
[pid 5282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5282] write(3, "1000", 4) = 4
[pid 5282] close(3) = 0
[pid 5282] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5282] memfd_create("syzkaller", 0) = 3
[pid 5282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 58.549889][ T5280] loop0: detected capacity change from 0 to 512
[ 58.559837][ T5280] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.568650][ T5280] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5282] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5282] munmap(0x7f9904690000, 262144) = 0
[pid 5282] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5282] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5282] close(3) = 0
[pid 5282] mkdir("./file0", 0777) = 0
[pid 5282] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5282] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5282] chdir("./file0") = 0
[pid 5282] ioctl(4, LOOP_CLR_FD) = 0
[pid 5282] close(4) = 0
[pid 5282] exit_group(0) = ?
[pid 5282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5282, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./108", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./108/binderfs") = 0
umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./108/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./108/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./108/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./108") = 0
mkdir("./109", 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=0x555555b855d0) = 5284
./strace-static-x86_64: Process 5284 attached
[pid 5284] chdir("./109") = 0
[pid 5284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5284] setpgid(0, 0) = 0
[pid 5284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5284] write(3, "1000", 4) = 4
[pid 5284] close(3) = 0
[pid 5284] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5284] memfd_create("syzkaller", 0) = 3
[pid 5284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5284] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5284] munmap(0x7f9904690000, 262144) = 0
[pid 5284] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.612958][ T5282] loop0: detected capacity change from 0 to 512
[ 58.622752][ T5282] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.631406][ T5282] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5284] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5284] close(3) = 0
[pid 5284] mkdir("./file0", 0777) = 0
[pid 5284] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5284] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5284] chdir("./file0") = 0
[pid 5284] ioctl(4, LOOP_CLR_FD) = 0
[pid 5284] close(4) = 0
[pid 5284] exit_group(0) = ?
[pid 5284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5284, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./109/binderfs") = 0
umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./109/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./109/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./109/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./109") = 0
mkdir("./110", 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=0x555555b855d0) = 5286
./strace-static-x86_64: Process 5286 attached
[pid 5286] chdir("./110") = 0
[pid 5286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5286] setpgid(0, 0) = 0
[pid 5286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5286] write(3, "1000", 4) = 4
[pid 5286] close(3) = 0
[pid 5286] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5286] memfd_create("syzkaller", 0) = 3
[pid 5286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5286] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5286] munmap(0x7f9904690000, 262144) = 0
[pid 5286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.667827][ T5284] loop0: detected capacity change from 0 to 512
[ 58.677755][ T5284] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.685915][ T5284] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5286] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5286] close(3) = 0
[pid 5286] mkdir("./file0", 0777) = 0
[pid 5286] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5286] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5286] chdir("./file0") = 0
[pid 5286] ioctl(4, LOOP_CLR_FD) = 0
[pid 5286] close(4) = 0
[ 58.724563][ T5286] loop0: detected capacity change from 0 to 512
[ 58.734469][ T5286] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.743065][ T5286] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5286] exit_group(0) = ?
[pid 5286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5286, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./110/binderfs") = 0
umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./110/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./110/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./110") = 0
mkdir("./111", 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=0x555555b855d0) = 5288
./strace-static-x86_64: Process 5288 attached
[pid 5288] chdir("./111") = 0
[pid 5288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5288] setpgid(0, 0) = 0
[pid 5288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5288] write(3, "1000", 4) = 4
[pid 5288] close(3) = 0
[pid 5288] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5288] memfd_create("syzkaller", 0) = 3
[pid 5288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5288] munmap(0x7f9904690000, 262144) = 0
[pid 5288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5288] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5288] close(3) = 0
[pid 5288] mkdir("./file0", 0777) = 0
[pid 5288] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5288] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5288] chdir("./file0") = 0
[pid 5288] ioctl(4, LOOP_CLR_FD) = 0
[pid 5288] close(4) = 0
[pid 5288] exit_group(0) = ?
[pid 5288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5288, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./111/binderfs") = 0
umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./111/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./111/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./111") = 0
mkdir("./112", 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=0x555555b855d0) = 5290
./strace-static-x86_64: Process 5290 attached
[pid 5290] chdir("./112") = 0
[pid 5290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5290] setpgid(0, 0) = 0
[pid 5290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5290] write(3, "1000", 4) = 4
[pid 5290] close(3) = 0
[pid 5290] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5290] memfd_create("syzkaller", 0) = 3
[pid 5290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5290] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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
[ 58.808453][ T5288] loop0: detected capacity change from 0 to 512
[ 58.817871][ T5288] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.826731][ T5288] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5290] munmap(0x7f9904690000, 262144) = 0
[pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5290] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5290] close(3) = 0
[pid 5290] mkdir("./file0", 0777) = 0
[pid 5290] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5290] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5290] chdir("./file0") = 0
[pid 5290] ioctl(4, LOOP_CLR_FD) = 0
[pid 5290] close(4) = 0
[pid 5290] exit_group(0) = ?
[pid 5290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5290, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./112/binderfs") = 0
umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./112/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./112/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./112") = 0
mkdir("./113", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5292
./strace-static-x86_64: Process 5292 attached
[pid 5292] chdir("./113") = 0
[pid 5292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5292] setpgid(0, 0) = 0
[pid 5292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5292] write(3, "1000", 4) = 4
[pid 5292] close(3) = 0
[pid 5292] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5292] memfd_create("syzkaller", 0) = 3
[pid 5292] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5292] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5292] munmap(0x7f9904690000, 262144) = 0
[pid 5292] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.856555][ T5290] loop0: detected capacity change from 0 to 512
[ 58.865842][ T5290] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.874465][ T5290] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5292] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5292] close(3) = 0
[pid 5292] mkdir("./file0", 0777) = 0
[pid 5292] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5292] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5292] chdir("./file0") = 0
[pid 5292] ioctl(4, LOOP_CLR_FD) = 0
[pid 5292] close(4) = 0
[pid 5292] exit_group(0) = ?
[pid 5292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5292, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./113/binderfs") = 0
umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./113/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./113/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./113") = 0
mkdir("./114", 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=0x555555b855d0) = 5294
./strace-static-x86_64: Process 5294 attached
[pid 5294] chdir("./114") = 0
[pid 5294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5294] setpgid(0, 0) = 0
[pid 5294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5294] write(3, "1000", 4) = 4
[pid 5294] close(3) = 0
[pid 5294] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5294] memfd_create("syzkaller", 0) = 3
[pid 5294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5294] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5294] munmap(0x7f9904690000, 262144) = 0
[pid 5294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.910523][ T5292] loop0: detected capacity change from 0 to 512
[ 58.911171][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 58.928718][ T5292] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.937903][ T5292] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5294] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5294] close(3) = 0
[pid 5294] mkdir("./file0", 0777) = 0
[pid 5294] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5294] chdir("./file0") = 0
[pid 5294] ioctl(4, LOOP_CLR_FD) = 0
[pid 5294] close(4) = 0
[pid 5294] exit_group(0) = ?
[pid 5294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5294, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./114/binderfs") = 0
umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./114/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./114") = 0
mkdir("./115", 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=0x555555b855d0) = 5296
./strace-static-x86_64: Process 5296 attached
[pid 5296] chdir("./115") = 0
[pid 5296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5296] setpgid(0, 0) = 0
[pid 5296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5296] write(3, "1000", 4) = 4
[pid 5296] close(3) = 0
[pid 5296] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5296] memfd_create("syzkaller", 0) = 3
[pid 5296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5296] munmap(0x7f9904690000, 262144) = 0
[pid 5296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.971845][ T5294] loop0: detected capacity change from 0 to 512
[ 58.974562][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 58.989912][ T5294] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.998300][ T5294] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5296] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5296] close(3) = 0
[pid 5296] mkdir("./file0", 0777) = 0
[pid 5296] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5296] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5296] chdir("./file0") = 0
[pid 5296] ioctl(4, LOOP_CLR_FD) = 0
[pid 5296] close(4) = 0
[pid 5296] exit_group(0) = ?
[pid 5296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5296, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./115/binderfs") = 0
umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./115/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./115/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./115") = 0
mkdir("./116", 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=0x555555b855d0) = 5298
./strace-static-x86_64: Process 5298 attached
[pid 5298] chdir("./116") = 0
[pid 5298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5298] setpgid(0, 0) = 0
[pid 5298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5298] write(3, "1000", 4) = 4
[pid 5298] close(3) = 0
[pid 5298] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5298] memfd_create("syzkaller", 0) = 3
[pid 5298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5298] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5298] munmap(0x7f9904690000, 262144) = 0
[pid 5298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.039259][ T5296] loop0: detected capacity change from 0 to 512
[ 59.048723][ T5296] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.058141][ T5296] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5298] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5298] close(3) = 0
[pid 5298] mkdir("./file0", 0777) = 0
[pid 5298] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5298] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5298] chdir("./file0") = 0
[pid 5298] ioctl(4, LOOP_CLR_FD) = 0
[pid 5298] close(4) = 0
[pid 5298] exit_group(0) = ?
[pid 5298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5298, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./116/binderfs") = 0
umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./116/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./116/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./116") = 0
mkdir("./117", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5300
./strace-static-x86_64: Process 5300 attached
[pid 5300] chdir("./117") = 0
[pid 5300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5300] setpgid(0, 0) = 0
[pid 5300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5300] write(3, "1000", 4) = 4
[pid 5300] close(3) = 0
[pid 5300] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5300] memfd_create("syzkaller", 0) = 3
[pid 5300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5300] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5300] munmap(0x7f9904690000, 262144) = 0
[pid 5300] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.085468][ T5298] loop0: detected capacity change from 0 to 512
[ 59.088453][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.103624][ T5298] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.112042][ T5298] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5300] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5300] close(3) = 0
[pid 5300] mkdir("./file0", 0777) = 0
[pid 5300] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5300] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5300] chdir("./file0") = 0
[pid 5300] ioctl(4, LOOP_CLR_FD) = 0
[pid 5300] close(4) = 0
[pid 5300] exit_group(0) = ?
[pid 5300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5300, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./117/binderfs") = 0
umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./117/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./117/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./117") = 0
mkdir("./118", 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=0x555555b855d0) = 5302
./strace-static-x86_64: Process 5302 attached
[pid 5302] chdir("./118") = 0
[pid 5302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5302] setpgid(0, 0) = 0
[pid 5302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5302] write(3, "1000", 4) = 4
[pid 5302] close(3) = 0
[pid 5302] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5302] memfd_create("syzkaller", 0) = 3
[pid 5302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5302] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5302] munmap(0x7f9904690000, 262144) = 0
[pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.141513][ T5300] loop0: detected capacity change from 0 to 512
[ 59.145318][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.159202][ T5300] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.167830][ T5300] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5302] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5302] close(3) = 0
[pid 5302] mkdir("./file0", 0777) = 0
[pid 5302] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5302] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5302] chdir("./file0") = 0
[pid 5302] ioctl(4, LOOP_CLR_FD) = 0
[pid 5302] close(4) = 0
[pid 5302] exit_group(0) = ?
[pid 5302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5302, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./118/binderfs") = 0
umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./118/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./118/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./118") = 0
mkdir("./119", 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=0x555555b855d0) = 5304
./strace-static-x86_64: Process 5304 attached
[pid 5304] chdir("./119") = 0
[pid 5304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5304] setpgid(0, 0) = 0
[pid 5304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5304] write(3, "1000", 4) = 4
[pid 5304] close(3) = 0
[pid 5304] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5304] memfd_create("syzkaller", 0) = 3
[pid 5304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5304] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5304] munmap(0x7f9904690000, 262144) = 0
[pid 5304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.207429][ T5302] loop0: detected capacity change from 0 to 512
[ 59.211432][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.225076][ T5302] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.233475][ T5302] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5304] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5304] close(3) = 0
[pid 5304] mkdir("./file0", 0777) = 0
[pid 5304] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5304] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5304] chdir("./file0") = 0
[pid 5304] ioctl(4, LOOP_CLR_FD) = 0
[pid 5304] close(4) = 0
[pid 5304] exit_group(0) = ?
[pid 5304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5304, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./119/binderfs") = 0
umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./119/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./119/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./119") = 0
mkdir("./120", 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 5306 attached
, child_tidptr=0x555555b855d0) = 5306
[pid 5306] chdir("./120") = 0
[pid 5306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5306] setpgid(0, 0) = 0
[pid 5306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5306] write(3, "1000", 4) = 4
[pid 5306] close(3) = 0
[pid 5306] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5306] memfd_create("syzkaller", 0) = 3
[pid 5306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5306] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5306] munmap(0x7f9904690000, 262144) = 0
[pid 5306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.280372][ T5304] loop0: detected capacity change from 0 to 512
[ 59.290756][ T5304] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.299736][ T5304] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5306] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5306] close(3) = 0
[pid 5306] mkdir("./file0", 0777) = 0
[pid 5306] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5306] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5306] chdir("./file0") = 0
[pid 5306] ioctl(4, LOOP_CLR_FD) = 0
[pid 5306] close(4) = 0
[pid 5306] exit_group(0) = ?
[pid 5306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5306, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./120/binderfs") = 0
umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./120/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./120/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./120") = 0
mkdir("./121", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 59.336924][ T5306] loop0: detected capacity change from 0 to 512
[ 59.346375][ T5306] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.354761][ T5306] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5308
./strace-static-x86_64: Process 5308 attached
[pid 5308] chdir("./121") = 0
[pid 5308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5308] setpgid(0, 0) = 0
[pid 5308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5308] write(3, "1000", 4) = 4
[pid 5308] close(3) = 0
[pid 5308] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5308] memfd_create("syzkaller", 0) = 3
[pid 5308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5308] munmap(0x7f9904690000, 262144) = 0
[pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5308] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5308] close(3) = 0
[pid 5308] mkdir("./file0", 0777) = 0
[pid 5308] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5308] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5308] chdir("./file0") = 0
[pid 5308] ioctl(4, LOOP_CLR_FD) = 0
[pid 5308] close(4) = 0
[pid 5308] exit_group(0) = ?
[pid 5308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5308, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./121/binderfs") = 0
umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./121/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./121") = 0
mkdir("./122", 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=0x555555b855d0) = 5310
./strace-static-x86_64: Process 5310 attached
[pid 5310] chdir("./122") = 0
[pid 5310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5310] setpgid(0, 0) = 0
[pid 5310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5310] write(3, "1000", 4) = 4
[pid 5310] close(3) = 0
[pid 5310] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5310] memfd_create("syzkaller", 0) = 3
[pid 5310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5310] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5310] munmap(0x7f9904690000, 262144) = 0
[pid 5310] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.440682][ T5308] loop0: detected capacity change from 0 to 512
[ 59.450181][ T5308] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.459153][ T5308] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5310] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5310] close(3) = 0
[pid 5310] mkdir("./file0", 0777) = 0
[pid 5310] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5310] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5310] chdir("./file0") = 0
[pid 5310] ioctl(4, LOOP_CLR_FD) = 0
[pid 5310] close(4) = 0
[pid 5310] exit_group(0) = ?
[pid 5310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./122/binderfs") = 0
umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./122/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./122") = 0
mkdir("./123", 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=0x555555b855d0) = 5312
./strace-static-x86_64: Process 5312 attached
[pid 5312] chdir("./123") = 0
[pid 5312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5312] setpgid(0, 0) = 0
[pid 5312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5312] write(3, "1000", 4) = 4
[pid 5312] close(3) = 0
[pid 5312] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5312] memfd_create("syzkaller", 0) = 3
[pid 5312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5312] munmap(0x7f9904690000, 262144) = 0
[pid 5312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.499702][ T5310] loop0: detected capacity change from 0 to 512
[ 59.509324][ T5310] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.517993][ T5310] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5312] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5312] close(3) = 0
[pid 5312] mkdir("./file0", 0777) = 0
[pid 5312] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5312] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5312] chdir("./file0") = 0
[pid 5312] ioctl(4, LOOP_CLR_FD) = 0
[pid 5312] close(4) = 0
[pid 5312] exit_group(0) = ?
[pid 5312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5312, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./123/binderfs") = 0
umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./123/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./123/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./123") = 0
mkdir("./124", 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 5314 attached
, child_tidptr=0x555555b855d0) = 5314
[pid 5314] chdir("./124") = 0
[pid 5314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5314] setpgid(0, 0) = 0
[pid 5314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5314] write(3, "1000", 4) = 4
[pid 5314] close(3) = 0
[pid 5314] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5314] memfd_create("syzkaller", 0) = 3
[pid 5314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5314] munmap(0x7f9904690000, 262144) = 0
[pid 5314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.551313][ T5312] loop0: detected capacity change from 0 to 512
[ 59.554694][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.569115][ T5312] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.577736][ T5312] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5314] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5314] close(3) = 0
[pid 5314] mkdir("./file0", 0777) = 0
[pid 5314] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5314] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5314] chdir("./file0") = 0
[pid 5314] ioctl(4, LOOP_CLR_FD) = 0
[pid 5314] close(4) = 0
[pid 5314] exit_group(0) = ?
[pid 5314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5314, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./124/binderfs") = 0
[ 59.612399][ T5314] loop0: detected capacity change from 0 to 512
[ 59.614028][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.630573][ T5314] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.639076][ T5314] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./124/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./124/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./124") = 0
mkdir("./125", 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=0x555555b855d0) = 5316
./strace-static-x86_64: Process 5316 attached
[pid 5316] chdir("./125") = 0
[pid 5316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5316] setpgid(0, 0) = 0
[pid 5316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5316] write(3, "1000", 4) = 4
[pid 5316] close(3) = 0
[pid 5316] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5316] memfd_create("syzkaller", 0) = 3
[pid 5316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5316] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5316] munmap(0x7f9904690000, 262144) = 0
[pid 5316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5316] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5316] close(3) = 0
[pid 5316] mkdir("./file0", 0777) = 0
[pid 5316] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5316] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5316] chdir("./file0") = 0
[pid 5316] ioctl(4, LOOP_CLR_FD) = 0
[pid 5316] close(4) = 0
[pid 5316] exit_group(0) = ?
[pid 5316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5316, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./125/binderfs") = 0
umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./125/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./125") = 0
mkdir("./126", 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 5318 attached
[pid 5318] chdir("./126") = 0
[pid 5318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5318] setpgid(0, 0) = 0
[pid 5318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5318] write(3, "1000", 4) = 4
[pid 5318] close(3) = 0
[pid 5318] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5318] memfd_create("syzkaller", 0) = 3
[pid 5318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5318] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5318] munmap(0x7f9904690000, 262144) = 0
[pid 5318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.716779][ T5316] loop0: detected capacity change from 0 to 512
[ 59.726909][ T5316] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.735574][ T5316] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5318] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5318] close(3) = 0
[pid 5318] mkdir("./file0", 0777) = 0
[pid 5318] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue"
[pid 5061] <... clone resumed>, child_tidptr=0x555555b855d0) = 5318
[pid 5318] <... mount resumed>) = 0
[pid 5318] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5318] chdir("./file0") = 0
[pid 5318] ioctl(4, LOOP_CLR_FD) = 0
[pid 5318] close(4) = 0
[pid 5318] exit_group(0) = ?
[pid 5318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5318, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./126/binderfs") = 0
umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./126/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./126/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./126") = 0
mkdir("./127", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5320 attached
, child_tidptr=0x555555b855d0) = 5320
[pid 5320] chdir("./127") = 0
[pid 5320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5320] setpgid(0, 0) = 0
[pid 5320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5320] write(3, "1000", 4) = 4
[pid 5320] close(3) = 0
[pid 5320] symlink("/dev/binderfs", "./binderfs") = 0
[ 59.770959][ T5318] loop0: detected capacity change from 0 to 512
[ 59.772655][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.789041][ T5318] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.797771][ T5318] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5320] memfd_create("syzkaller", 0) = 3
[pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5320] munmap(0x7f9904690000, 262144) = 0
[pid 5320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5320] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 5320] ioctl(4, LOOP_CLR_FD) = 0
[pid 5320] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 5320] close(4) = 0
[pid 5320] close(3) = 0
[pid 5320] exit_group(0) = ?
[pid 5320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 3 entries */, 32768) = 80
umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./127/binderfs") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./127") = 0
mkdir("./128", 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 5321 attached
, child_tidptr=0x555555b855d0) = 5321
[pid 5321] chdir("./128") = 0
[pid 5321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5321] setpgid(0, 0) = 0
[pid 5321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5321] write(3, "1000", 4) = 4
[pid 5321] close(3) = 0
[pid 5321] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5321] memfd_create("syzkaller", 0) = 3
[pid 5321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5321] munmap(0x7f9904690000, 262144) = 0
[pid 5321] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5321] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5321] close(3) = 0
[pid 5321] mkdir("./file0", 0777) = 0
[pid 5321] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5321] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5321] chdir("./file0") = 0
[pid 5321] ioctl(4, LOOP_CLR_FD) = 0
[pid 5321] close(4) = 0
[pid 5321] exit_group(0) = ?
[pid 5321] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5321, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./128/binderfs") = 0
umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./128/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./128") = 0
mkdir("./129", 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=0x555555b855d0) = 5323
./strace-static-x86_64: Process 5323 attached
[pid 5323] chdir("./129") = 0
[pid 5323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5323] setpgid(0, 0) = 0
[pid 5323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5323] write(3, "1000", 4) = 4
[pid 5323] close(3) = 0
[pid 5323] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5323] memfd_create("syzkaller", 0) = 3
[pid 5323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5323] munmap(0x7f9904690000, 262144) = 0
[pid 5323] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.880720][ T5321] loop0: detected capacity change from 0 to 512
[ 59.883671][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.900440][ T5321] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.909242][ T5321] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5323] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5323] close(3) = 0
[pid 5323] mkdir("./file0", 0777) = 0
[pid 5323] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5323] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5323] chdir("./file0") = 0
[pid 5323] ioctl(4, LOOP_CLR_FD) = 0
[pid 5323] close(4) = 0
[pid 5323] exit_group(0) = ?
[pid 5323] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5323, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./129/binderfs") = 0
umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./129/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./129/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./129") = 0
mkdir("./130", 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 5325 attached
, child_tidptr=0x555555b855d0) = 5325
[pid 5325] chdir("./130") = 0
[pid 5325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5325] setpgid(0, 0) = 0
[pid 5325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5325] write(3, "1000", 4) = 4
[pid 5325] close(3) = 0
[pid 5325] symlink("/dev/binderfs", "./binderfs") = 0
[ 59.947966][ T5323] loop0: detected capacity change from 0 to 512
[ 59.957790][ T5323] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.966265][ T5323] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5325] memfd_create("syzkaller", 0) = 3
[pid 5325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5325] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5325] munmap(0x7f9904690000, 262144) = 0
[pid 5325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5325] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5325] close(3) = 0
[pid 5325] mkdir("./file0", 0777) = 0
[pid 5325] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5325] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5325] chdir("./file0") = 0
[pid 5325] ioctl(4, LOOP_CLR_FD) = 0
[pid 5325] close(4) = 0
[pid 5325] exit_group(0) = ?
[pid 5325] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5325, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./130/binderfs") = 0
umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./130/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./130/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./130") = 0
mkdir("./131", 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=0x555555b855d0) = 5327
./strace-static-x86_64: Process 5327 attached
[pid 5327] chdir("./131") = 0
[pid 5327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5327] setpgid(0, 0) = 0
[pid 5327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5327] write(3, "1000", 4) = 4
[pid 5327] close(3) = 0
[pid 5327] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5327] memfd_create("syzkaller", 0) = 3
[pid 5327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5327] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5327] munmap(0x7f9904690000, 262144) = 0
[pid 5327] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.014339][ T5325] loop0: detected capacity change from 0 to 512
[ 60.025458][ T5325] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.034041][ T5325] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5327] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5327] close(3) = 0
[pid 5327] mkdir("./file0", 0777) = 0
[pid 5327] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5327] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5327] chdir("./file0") = 0
[pid 5327] ioctl(4, LOOP_CLR_FD) = 0
[pid 5327] close(4) = 0
[pid 5327] exit_group(0) = ?
[pid 5327] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5327, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./131/binderfs") = 0
umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./131/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./131/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./131") = 0
mkdir("./132", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5329
./strace-static-x86_64: Process 5329 attached
[pid 5329] chdir("./132") = 0
[pid 5329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5329] setpgid(0, 0) = 0
[pid 5329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5329] write(3, "1000", 4) = 4
[pid 5329] close(3) = 0
[pid 5329] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5329] memfd_create("syzkaller", 0) = 3
[pid 5329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5329] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5329] munmap(0x7f9904690000, 262144) = 0
[pid 5329] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.078798][ T5327] loop0: detected capacity change from 0 to 512
[ 60.088609][ T5327] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.096425][ T5327] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5329] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5329] close(3) = 0
[pid 5329] mkdir("./file0", 0777) = 0
[pid 5329] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5329] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5329] chdir("./file0") = 0
[pid 5329] ioctl(4, LOOP_CLR_FD) = 0
[pid 5329] close(4) = 0
[pid 5329] exit_group(0) = ?
[pid 5329] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5329, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./132/binderfs") = 0
umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./132/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./132/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./132") = 0
mkdir("./133", 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=0x555555b855d0) = 5331
./strace-static-x86_64: Process 5331 attached
[pid 5331] chdir("./133") = 0
[pid 5331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5331] setpgid(0, 0) = 0
[pid 5331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5331] write(3, "1000", 4) = 4
[pid 5331] close(3) = 0
[pid 5331] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5331] memfd_create("syzkaller", 0) = 3
[pid 5331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5331] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5331] munmap(0x7f9904690000, 262144) = 0
[pid 5331] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.130672][ T5329] loop0: detected capacity change from 0 to 512
[ 60.135098][ T5063] Buffer I/O error on dev loop0, logical block 0, async page read
[ 60.147300][ T5329] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.155698][ T5329] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5331] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5331] close(3) = 0
[pid 5331] mkdir("./file0", 0777) = 0
[pid 5331] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5331] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5331] chdir("./file0") = 0
[pid 5331] ioctl(4, LOOP_CLR_FD) = 0
[pid 5331] close(4) = 0
[pid 5331] exit_group(0) = ?
[pid 5331] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5331, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./133/binderfs") = 0
umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./133/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./133/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./133") = 0
mkdir("./134", 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=0x555555b855d0) = 5333
./strace-static-x86_64: Process 5333 attached
[pid 5333] chdir("./134") = 0
[pid 5333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5333] setpgid(0, 0) = 0
[ 60.196743][ T5331] loop0: detected capacity change from 0 to 512
[ 60.206042][ T5331] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.214646][ T5331] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5333] write(3, "1000", 4) = 4
[pid 5333] close(3) = 0
[pid 5333] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5333] memfd_create("syzkaller", 0) = 3
[pid 5333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5333] munmap(0x7f9904690000, 262144) = 0
[pid 5333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5333] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5333] close(3) = 0
[pid 5333] mkdir("./file0", 0777) = 0
[pid 5333] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5333] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5333] chdir("./file0") = 0
[pid 5333] ioctl(4, LOOP_CLR_FD) = 0
[pid 5333] close(4) = 0
[pid 5333] exit_group(0) = ?
[pid 5333] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5333, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./134/binderfs") = 0
umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./134/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./134/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./134") = 0
mkdir("./135", 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=0x555555b855d0) = 5335
./strace-static-x86_64: Process 5335 attached
[pid 5335] chdir("./135") = 0
[pid 5335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5335] setpgid(0, 0) = 0
[pid 5335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5335] write(3, "1000", 4) = 4
[pid 5335] close(3) = 0
[pid 5335] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5335] memfd_create("syzkaller", 0) = 3
[pid 5335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5335] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5335] munmap(0x7f9904690000, 262144) = 0
[pid 5335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.269590][ T5333] loop0: detected capacity change from 0 to 512
[ 60.280808][ T5333] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.289410][ T5333] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5335] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5335] close(3) = 0
[pid 5335] mkdir("./file0", 0777) = 0
[pid 5335] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5335] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5335] chdir("./file0") = 0
[pid 5335] ioctl(4, LOOP_CLR_FD) = 0
[pid 5335] close(4) = 0
[pid 5335] exit_group(0) = ?
[pid 5335] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5335, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./135/binderfs") = 0
umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./135/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./135/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./135") = 0
mkdir("./136", 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=0x555555b855d0) = 5337
./strace-static-x86_64: Process 5337 attached
[pid 5337] chdir("./136") = 0
[pid 5337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5337] setpgid(0, 0) = 0
[pid 5337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5337] write(3, "1000", 4) = 4
[pid 5337] close(3) = 0
[pid 5337] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5337] memfd_create("syzkaller", 0) = 3
[pid 5337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5337] munmap(0x7f9904690000, 262144) = 0
[pid 5337] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.324895][ T5335] loop0: detected capacity change from 0 to 512
[ 60.334518][ T5335] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.342785][ T5335] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5337] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5337] close(3) = 0
[pid 5337] mkdir("./file0", 0777) = 0
[pid 5337] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5337] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5337] chdir("./file0") = 0
[pid 5337] ioctl(4, LOOP_CLR_FD) = 0
[pid 5337] close(4) = 0
[pid 5337] exit_group(0) = ?
[pid 5337] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5337, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./136/binderfs") = 0
umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./136/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./136/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./136") = 0
mkdir("./137", 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=0x555555b855d0) = 5339
./strace-static-x86_64: Process 5339 attached
[pid 5339] chdir("./137") = 0
[pid 5339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5339] setpgid(0, 0) = 0
[pid 5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5339] write(3, "1000", 4) = 4
[pid 5339] close(3) = 0
[pid 5339] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5339] memfd_create("syzkaller", 0) = 3
[pid 5339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5339] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5339] munmap(0x7f9904690000, 262144) = 0
[pid 5339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.382239][ T5337] loop0: detected capacity change from 0 to 512
[ 60.391744][ T5337] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.399720][ T5337] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5339] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5339] close(3) = 0
[pid 5339] mkdir("./file0", 0777) = 0
[pid 5339] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5339] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5339] chdir("./file0") = 0
[pid 5339] ioctl(4, LOOP_CLR_FD) = 0
[pid 5339] close(4) = 0
[pid 5339] exit_group(0) = ?
[pid 5339] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5339, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./137/binderfs") = 0
umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./137/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./137/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./137") = 0
mkdir("./138", 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=0x555555b855d0) = 5341
./strace-static-x86_64: Process 5341 attached
[pid 5341] chdir("./138") = 0
[pid 5341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5341] setpgid(0, 0) = 0
[pid 5341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5341] write(3, "1000", 4) = 4
[pid 5341] close(3) = 0
[pid 5341] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5341] memfd_create("syzkaller", 0) = 3
[pid 5341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5341] munmap(0x7f9904690000, 262144) = 0
[pid 5341] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.430445][ T5339] loop0: detected capacity change from 0 to 512
[ 60.440279][ T5339] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.448704][ T5339] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5341] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5341] close(3) = 0
[pid 5341] mkdir("./file0", 0777) = 0
[pid 5341] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5341] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5341] chdir("./file0") = 0
[pid 5341] ioctl(4, LOOP_CLR_FD) = 0
[pid 5341] close(4) = 0
[pid 5341] exit_group(0) = ?
[pid 5341] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5341, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./138/binderfs") = 0
umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./138/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./138/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./138") = 0
mkdir("./139", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5343
./strace-static-x86_64: Process 5343 attached
[pid 5343] chdir("./139") = 0
[pid 5343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5343] setpgid(0, 0) = 0
[pid 5343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5343] write(3, "1000", 4) = 4
[pid 5343] close(3) = 0
[pid 5343] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5343] memfd_create("syzkaller", 0) = 3
[pid 5343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5343] munmap(0x7f9904690000, 262144) = 0
[pid 5343] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.489064][ T5341] loop0: detected capacity change from 0 to 512
[ 60.499001][ T5341] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.507408][ T5341] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5343] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5343] close(3) = 0
[pid 5343] mkdir("./file0", 0777) = 0
[pid 5343] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5343] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5343] chdir("./file0") = 0
[pid 5343] ioctl(4, LOOP_CLR_FD) = 0
[pid 5343] close(4) = 0
[pid 5343] exit_group(0) = ?
[pid 5343] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5343, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./139/binderfs") = 0
umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./139/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./139/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./139") = 0
mkdir("./140", 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=0x555555b855d0) = 5345
./strace-static-x86_64: Process 5345 attached
[pid 5345] chdir("./140") = 0
[pid 5345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5345] setpgid(0, 0) = 0
[pid 5345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5345] write(3, "1000", 4) = 4
[pid 5345] close(3) = 0
[pid 5345] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5345] memfd_create("syzkaller", 0) = 3
[pid 5345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5345] munmap(0x7f9904690000, 262144) = 0
[pid 5345] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.536176][ T5343] loop0: detected capacity change from 0 to 512
[ 60.540783][ T5063] Buffer I/O error on dev loop0, logical block 0, async page read
[ 60.552605][ T5343] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.560981][ T5343] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5345] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5345] close(3) = 0
[pid 5345] mkdir("./file0", 0777) = 0
[pid 5345] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5345] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5345] chdir("./file0") = 0
[pid 5345] ioctl(4, LOOP_CLR_FD) = 0
[pid 5345] close(4) = 0
[pid 5345] exit_group(0) = ?
[pid 5345] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5345, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./140/binderfs") = 0
umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./140/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./140/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./140") = 0
mkdir("./141", 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=0x555555b855d0) = 5347
./strace-static-x86_64: Process 5347 attached
[pid 5347] chdir("./141") = 0
[pid 5347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5347] setpgid(0, 0) = 0
[pid 5347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5347] write(3, "1000", 4) = 4
[pid 5347] close(3) = 0
[pid 5347] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5347] memfd_create("syzkaller", 0) = 3
[pid 5347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5347] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5347] munmap(0x7f9904690000, 262144) = 0
[ 60.601405][ T5345] loop0: detected capacity change from 0 to 512
[ 60.611176][ T5345] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.619903][ T5345] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5347] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5347] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5347] close(3) = 0
[pid 5347] mkdir("./file0", 0777) = 0
[pid 5347] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5347] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5347] chdir("./file0") = 0
[pid 5347] ioctl(4, LOOP_CLR_FD) = 0
[pid 5347] close(4) = 0
[pid 5347] exit_group(0) = ?
[pid 5347] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5347, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./141/binderfs") = 0
umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./141/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./141/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./141") = 0
mkdir("./142", 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=0x555555b855d0) = 5349
./strace-static-x86_64: Process 5349 attached
[pid 5349] chdir("./142") = 0
[pid 5349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5349] setpgid(0, 0) = 0
[pid 5349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5349] write(3, "1000", 4) = 4
[pid 5349] close(3) = 0
[pid 5349] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5349] memfd_create("syzkaller", 0) = 3
[pid 5349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5349] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5349] munmap(0x7f9904690000, 262144) = 0
[pid 5349] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.662669][ T5347] loop0: detected capacity change from 0 to 512
[ 60.672224][ T5347] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.681063][ T5347] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5349] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5349] close(3) = 0
[pid 5349] mkdir("./file0", 0777) = 0
[pid 5349] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5349] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5349] chdir("./file0") = 0
[pid 5349] ioctl(4, LOOP_CLR_FD) = 0
[pid 5349] close(4) = 0
[pid 5349] exit_group(0) = ?
[pid 5349] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5349, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 60.722914][ T5349] loop0: detected capacity change from 0 to 512
[ 60.732685][ T5349] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.741206][ T5349] EXT4-fs (loop0): 1 truncate cleaned up
lstat("./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./142/binderfs") = 0
umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./142/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./142/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./142") = 0
mkdir("./143", 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 5351 attached
, child_tidptr=0x555555b855d0) = 5351
[pid 5351] chdir("./143") = 0
[pid 5351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5351] setpgid(0, 0) = 0
[pid 5351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5351] write(3, "1000", 4) = 4
[pid 5351] close(3) = 0
[pid 5351] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5351] memfd_create("syzkaller", 0) = 3
[pid 5351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5351] munmap(0x7f9904690000, 262144) = 0
[pid 5351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5351] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5351] close(3) = 0
[pid 5351] mkdir("./file0", 0777) = 0
[pid 5351] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5351] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5351] chdir("./file0") = 0
[pid 5351] ioctl(4, LOOP_CLR_FD) = 0
[pid 5351] close(4) = 0
[pid 5351] exit_group(0) = ?
[pid 5351] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5351, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./143/binderfs") = 0
umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./143/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./143") = 0
mkdir("./144", 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=0x555555b855d0) = 5353
./strace-static-x86_64: Process 5353 attached
[pid 5353] chdir("./144") = 0
[pid 5353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5353] setpgid(0, 0) = 0
[pid 5353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5353] write(3, "1000", 4) = 4
[pid 5353] close(3) = 0
[pid 5353] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5353] memfd_create("syzkaller", 0) = 3
[pid 5353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5353] munmap(0x7f9904690000, 262144) = 0
[pid 5353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.824094][ T5351] loop0: detected capacity change from 0 to 512
[ 60.834122][ T5351] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.842450][ T5351] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5353] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5353] close(3) = 0
[pid 5353] mkdir("./file0", 0777) = 0
[pid 5353] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5353] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5353] chdir("./file0") = 0
[pid 5353] ioctl(4, LOOP_CLR_FD) = 0
[pid 5353] close(4) = 0
[pid 5353] exit_group(0) = ?
[pid 5353] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5353, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./144/binderfs") = 0
umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./144/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./144/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./144") = 0
mkdir("./145", 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=0x555555b855d0) = 5355
./strace-static-x86_64: Process 5355 attached
[pid 5355] chdir("./145") = 0
[pid 5355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5355] setpgid(0, 0) = 0
[pid 5355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5355] write(3, "1000", 4) = 4
[pid 5355] close(3) = 0
[pid 5355] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5355] memfd_create("syzkaller", 0) = 3
[pid 5355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5355] munmap(0x7f9904690000, 262144) = 0
[pid 5355] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.882246][ T5353] loop0: detected capacity change from 0 to 512
[ 60.892053][ T5353] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.900729][ T5353] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5355] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5355] close(3) = 0
[pid 5355] mkdir("./file0", 0777) = 0
[pid 5355] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5355] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5355] chdir("./file0") = 0
[pid 5355] ioctl(4, LOOP_CLR_FD) = 0
[pid 5355] close(4) = 0
[pid 5355] exit_group(0) = ?
[pid 5355] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5355, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./145/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./145/binderfs") = 0
umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./145/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./145") = 0
mkdir("./146", 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=0x555555b855d0) = 5357
./strace-static-x86_64: Process 5357 attached
[pid 5357] chdir("./146") = 0
[pid 5357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5357] setpgid(0, 0) = 0
[pid 5357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5357] write(3, "1000", 4) = 4
[pid 5357] close(3) = 0
[pid 5357] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5357] memfd_create("syzkaller", 0) = 3
[pid 5357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5357] munmap(0x7f9904690000, 262144) = 0
[pid 5357] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.942098][ T5355] loop0: detected capacity change from 0 to 512
[ 60.951708][ T5355] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.960481][ T5355] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5357] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5357] close(3) = 0
[pid 5357] mkdir("./file0", 0777) = 0
[pid 5357] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5357] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5357] chdir("./file0") = 0
[pid 5357] ioctl(4, LOOP_CLR_FD) = 0
[pid 5357] close(4) = 0
[pid 5357] exit_group(0) = ?
[pid 5357] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5357, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./146/binderfs") = 0
umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./146/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./146/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./146") = 0
mkdir("./147", 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=0x555555b855d0) = 5359
./strace-static-x86_64: Process 5359 attached
[pid 5359] chdir("./147") = 0
[pid 5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5359] setpgid(0, 0) = 0
[pid 5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5359] write(3, "1000", 4) = 4
[pid 5359] close(3) = 0
[pid 5359] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5359] memfd_create("syzkaller", 0) = 3
[pid 5359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5359] munmap(0x7f9904690000, 262144) = 0
[pid 5359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 60.999924][ T5357] loop0: detected capacity change from 0 to 512
[ 61.009169][ T5357] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.017424][ T5357] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5359] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5359] close(3) = 0
[pid 5359] mkdir("./file0", 0777) = 0
[pid 5359] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5359] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5359] chdir("./file0") = 0
[pid 5359] ioctl(4, LOOP_CLR_FD) = 0
[pid 5359] close(4) = 0
[pid 5359] exit_group(0) = ?
[pid 5359] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5359, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./147/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./147/binderfs") = 0
umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./147/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./147/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./147") = 0
mkdir("./148", 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=0x555555b855d0) = 5361
./strace-static-x86_64: Process 5361 attached
[pid 5361] chdir("./148") = 0
[pid 5361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5361] setpgid(0, 0) = 0
[pid 5361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5361] write(3, "1000", 4) = 4
[pid 5361] close(3) = 0
[pid 5361] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5361] memfd_create("syzkaller", 0) = 3
[pid 5361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5361] munmap(0x7f9904690000, 262144) = 0
[pid 5361] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.058955][ T5359] loop0: detected capacity change from 0 to 512
[ 61.068249][ T5359] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.077187][ T5359] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5361] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5361] close(3) = 0
[pid 5361] mkdir("./file0", 0777) = 0
[pid 5361] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5361] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5361] chdir("./file0") = 0
[pid 5361] ioctl(4, LOOP_CLR_FD) = 0
[pid 5361] close(4) = 0
[pid 5361] exit_group(0) = ?
[pid 5361] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5361, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./148/binderfs") = 0
umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./148/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./148/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./148") = 0
mkdir("./149", 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=0x555555b855d0) = 5363
./strace-static-x86_64: Process 5363 attached
[pid 5363] chdir("./149") = 0
[pid 5363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5363] setpgid(0, 0) = 0
[pid 5363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5363] write(3, "1000", 4) = 4
[pid 5363] close(3) = 0
[pid 5363] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5363] memfd_create("syzkaller", 0) = 3
[pid 5363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5363] munmap(0x7f9904690000, 262144) = 0
[pid 5363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.112572][ T5361] loop0: detected capacity change from 0 to 512
[ 61.122208][ T5361] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.130842][ T5361] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5363] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5363] close(3) = 0
[pid 5363] mkdir("./file0", 0777) = 0
[pid 5363] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5363] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5363] chdir("./file0") = 0
[pid 5363] ioctl(4, LOOP_CLR_FD) = 0
[pid 5363] close(4) = 0
[pid 5363] exit_group(0) = ?
[pid 5363] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5363, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./149/binderfs") = 0
umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./149/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./149/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./149") = 0
mkdir("./150", 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=0x555555b855d0) = 5365
./strace-static-x86_64: Process 5365 attached
[pid 5365] chdir("./150") = 0
[pid 5365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5365] setpgid(0, 0) = 0
[pid 5365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5365] write(3, "1000", 4) = 4
[pid 5365] close(3) = 0
[pid 5365] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5365] memfd_create("syzkaller", 0) = 3
[pid 5365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 61.167243][ T5363] loop0: detected capacity change from 0 to 512
[ 61.177182][ T5363] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.185571][ T5363] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5365] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5365] munmap(0x7f9904690000, 262144) = 0
[pid 5365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5365] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5365] close(3) = 0
[pid 5365] mkdir("./file0", 0777) = 0
[pid 5365] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5365] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5365] chdir("./file0") = 0
[pid 5365] ioctl(4, LOOP_CLR_FD) = 0
[pid 5365] close(4) = 0
[pid 5365] exit_group(0) = ?
[pid 5365] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5365, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./150/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./150/binderfs") = 0
umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./150/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./150/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./150") = 0
mkdir("./151", 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=0x555555b855d0) = 5367
./strace-static-x86_64: Process 5367 attached
[pid 5367] chdir("./151") = 0
[pid 5367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5367] setpgid(0, 0) = 0
[pid 5367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5367] write(3, "1000", 4) = 4
[pid 5367] close(3) = 0
[pid 5367] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5367] memfd_create("syzkaller", 0) = 3
[pid 5367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5367] munmap(0x7f9904690000, 262144) = 0
[pid 5367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.231095][ T5365] loop0: detected capacity change from 0 to 512
[ 61.241515][ T5365] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.250080][ T5365] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5367] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5367] close(3) = 0
[pid 5367] mkdir("./file0", 0777) = 0
[pid 5367] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5367] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5367] chdir("./file0") = 0
[pid 5367] ioctl(4, LOOP_CLR_FD) = 0
[pid 5367] close(4) = 0
[pid 5367] exit_group(0) = ?
[pid 5367] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5367, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./151/binderfs") = 0
umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./151/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./151/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./151") = 0
mkdir("./152", 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=0x555555b855d0) = 5369
./strace-static-x86_64: Process 5369 attached
[pid 5369] chdir("./152") = 0
[pid 5369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5369] setpgid(0, 0) = 0
[pid 5369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5369] write(3, "1000", 4) = 4
[pid 5369] close(3) = 0
[pid 5369] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5369] memfd_create("syzkaller", 0) = 3
[pid 5369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5369] munmap(0x7f9904690000, 262144) = 0
[pid 5369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.290042][ T5367] loop0: detected capacity change from 0 to 512
[ 61.299977][ T5367] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.308797][ T5367] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5369] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5369] close(3) = 0
[pid 5369] mkdir("./file0", 0777) = 0
[pid 5369] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5369] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5369] chdir("./file0") = 0
[pid 5369] ioctl(4, LOOP_CLR_FD) = 0
[pid 5369] close(4) = 0
[pid 5369] exit_group(0) = ?
[pid 5369] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5369, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./152/binderfs") = 0
umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./152/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./152") = 0
mkdir("./153", 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=0x555555b855d0) = 5371
./strace-static-x86_64: Process 5371 attached
[pid 5371] chdir("./153") = 0
[pid 5371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5371] setpgid(0, 0) = 0
[pid 5371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5371] write(3, "1000", 4) = 4
[pid 5371] close(3) = 0
[pid 5371] symlink("/dev/binderfs", "./binderfs") = 0
[ 61.335866][ T5369] loop0: detected capacity change from 0 to 512
[ 61.338855][ T5063] Buffer I/O error on dev loop0, logical block 0, async page read
[ 61.352238][ T5369] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.361033][ T5369] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5371] memfd_create("syzkaller", 0) = 3
[pid 5371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5371] munmap(0x7f9904690000, 262144) = 0
[pid 5371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5371] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5371] close(3) = 0
[pid 5371] mkdir("./file0", 0777) = 0
[pid 5371] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5371] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5371] chdir("./file0") = 0
[pid 5371] ioctl(4, LOOP_CLR_FD) = 0
[pid 5371] close(4) = 0
[pid 5371] exit_group(0) = ?
[pid 5371] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5371, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./153/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./153/binderfs") = 0
[ 61.404950][ T5371] loop0: detected capacity change from 0 to 512
[ 61.414354][ T5371] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.423305][ T5371] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./153/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./153/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./153") = 0
mkdir("./154", 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=0x555555b855d0) = 5373
./strace-static-x86_64: Process 5373 attached
[pid 5373] chdir("./154") = 0
[pid 5373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5373] setpgid(0, 0) = 0
[pid 5373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5373] write(3, "1000", 4) = 4
[pid 5373] close(3) = 0
[pid 5373] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5373] memfd_create("syzkaller", 0) = 3
[pid 5373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5373] munmap(0x7f9904690000, 262144) = 0
[pid 5373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5373] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5373] close(3) = 0
[pid 5373] mkdir("./file0", 0777) = 0
[pid 5373] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5373] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5373] chdir("./file0") = 0
[pid 5373] ioctl(4, LOOP_CLR_FD) = 0
[pid 5373] close(4) = 0
[pid 5373] exit_group(0) = ?
[pid 5373] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5373, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./154/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./154/binderfs") = 0
umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./154/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./154") = 0
mkdir("./155", 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=0x555555b855d0) = 5375
./strace-static-x86_64: Process 5375 attached
[pid 5375] chdir("./155") = 0
[pid 5375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5375] setpgid(0, 0) = 0
[pid 5375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5375] write(3, "1000", 4) = 4
[pid 5375] close(3) = 0
[pid 5375] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5375] memfd_create("syzkaller", 0) = 3
[pid 5375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5375] munmap(0x7f9904690000, 262144) = 0
[ 61.492026][ T5373] loop0: detected capacity change from 0 to 512
[ 61.501814][ T5373] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.510445][ T5373] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5375] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5375] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5375] close(3) = 0
[pid 5375] mkdir("./file0", 0777) = 0
[pid 5375] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5375] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5375] chdir("./file0") = 0
[pid 5375] ioctl(4, LOOP_CLR_FD) = 0
[pid 5375] close(4) = 0
[pid 5375] exit_group(0) = ?
[pid 5375] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5375, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./155/binderfs") = 0
umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./155/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./155/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./155") = 0
mkdir("./156", 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=0x555555b855d0) = 5377
./strace-static-x86_64: Process 5377 attached
[pid 5377] chdir("./156") = 0
[pid 5377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5377] setpgid(0, 0) = 0
[pid 5377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5377] write(3, "1000", 4) = 4
[pid 5377] close(3) = 0
[pid 5377] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5377] memfd_create("syzkaller", 0) = 3
[pid 5377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5377] munmap(0x7f9904690000, 262144) = 0
[pid 5377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.553325][ T5375] loop0: detected capacity change from 0 to 512
[ 61.563009][ T5375] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.571376][ T5375] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5377] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5377] close(3) = 0
[pid 5377] mkdir("./file0", 0777) = 0
[pid 5377] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5377] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5377] chdir("./file0") = 0
[pid 5377] ioctl(4, LOOP_CLR_FD) = 0
[pid 5377] close(4) = 0
[pid 5377] exit_group(0) = ?
[pid 5377] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5377, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./156", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./156/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./156/binderfs") = 0
umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./156/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./156/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./156/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./156/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./156") = 0
mkdir("./157", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5379
./strace-static-x86_64: Process 5379 attached
[pid 5379] chdir("./157") = 0
[pid 5379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5379] setpgid(0, 0) = 0
[pid 5379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5379] write(3, "1000", 4) = 4
[pid 5379] close(3) = 0
[pid 5379] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5379] memfd_create("syzkaller", 0) = 3
[pid 5379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5379] munmap(0x7f9904690000, 262144) = 0
[ 61.608278][ T5377] loop0: detected capacity change from 0 to 512
[ 61.617629][ T5377] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.625366][ T5377] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5379] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5379] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5379] close(3) = 0
[pid 5379] mkdir("./file0", 0777) = 0
[pid 5379] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5379] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5379] chdir("./file0") = 0
[pid 5379] ioctl(4, LOOP_CLR_FD) = 0
[pid 5379] close(4) = 0
[pid 5379] exit_group(0) = ?
[pid 5379] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5379, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./157", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./157/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./157/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./157/binderfs") = 0
umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./157/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./157/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./157/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./157/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./157") = 0
mkdir("./158", 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=0x555555b855d0) = 5381
./strace-static-x86_64: Process 5381 attached
[pid 5381] chdir("./158") = 0
[pid 5381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5381] setpgid(0, 0) = 0
[pid 5381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5381] write(3, "1000", 4) = 4
[pid 5381] close(3) = 0
[pid 5381] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5381] memfd_create("syzkaller", 0) = 3
[pid 5381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5381] munmap(0x7f9904690000, 262144) = 0
[pid 5381] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.670251][ T5379] loop0: detected capacity change from 0 to 512
[ 61.682206][ T5379] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.690831][ T5379] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5381] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5381] close(3) = 0
[pid 5381] mkdir("./file0", 0777) = 0
[pid 5381] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5381] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5381] chdir("./file0") = 0
[pid 5381] ioctl(4, LOOP_CLR_FD) = 0
[pid 5381] close(4) = 0
[pid 5381] exit_group(0) = ?
[pid 5381] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5381, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./158", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./158/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./158/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./158/binderfs") = 0
umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./158/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./158/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./158/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./158/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./158") = 0
mkdir("./159", 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=0x555555b855d0) = 5383
./strace-static-x86_64: Process 5383 attached
[pid 5383] chdir("./159") = 0
[pid 5383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5383] setpgid(0, 0) = 0
[pid 5383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5383] write(3, "1000", 4) = 4
[pid 5383] close(3) = 0
[pid 5383] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5383] memfd_create("syzkaller", 0) = 3
[pid 5383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5383] munmap(0x7f9904690000, 262144) = 0
[pid 5383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.726138][ T5381] loop0: detected capacity change from 0 to 512
[ 61.727164][ T5063] Buffer I/O error on dev loop0, logical block 0, async page read
[ 61.742402][ T5381] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.751510][ T5381] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5383] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5383] close(3) = 0
[pid 5383] mkdir("./file0", 0777) = 0
[pid 5383] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5383] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5383] chdir("./file0") = 0
[pid 5383] ioctl(4, LOOP_CLR_FD) = 0
[pid 5383] close(4) = 0
[pid 5383] exit_group(0) = ?
[pid 5383] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5383, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./159", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./159/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./159/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./159/binderfs") = 0
umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./159/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./159/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./159/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./159/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./159") = 0
mkdir("./160", 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 5385 attached
, child_tidptr=0x555555b855d0) = 5385
[pid 5385] chdir("./160") = 0
[pid 5385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5385] setpgid(0, 0) = 0
[pid 5385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5385] write(3, "1000", 4) = 4
[pid 5385] close(3) = 0
[pid 5385] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5385] memfd_create("syzkaller", 0) = 3
[pid 5385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5385] munmap(0x7f9904690000, 262144) = 0
[pid 5385] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 61.788858][ T5383] loop0: detected capacity change from 0 to 512
[ 61.799141][ T5383] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.807950][ T5383] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5385] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5385] close(3) = 0
[pid 5385] mkdir("./file0", 0777) = 0
[pid 5385] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5385] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5385] chdir("./file0") = 0
[pid 5385] ioctl(4, LOOP_CLR_FD) = 0
[pid 5385] close(4) = 0
[pid 5385] exit_group(0) = ?
[pid 5385] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5385, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./160", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./160/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./160/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./160/binderfs") = 0
umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./160/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./160/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./160/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./160/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./160") = 0
mkdir("./161", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
[ 61.845228][ T5385] loop0: detected capacity change from 0 to 512
[ 61.855329][ T5385] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.864041][ T5385] EXT4-fs (loop0): 1 truncate cleaned up
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5387
./strace-static-x86_64: Process 5387 attached
[pid 5387] chdir("./161") = 0
[pid 5387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5387] setpgid(0, 0) = 0
[pid 5387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5387] write(3, "1000", 4) = 4
[pid 5387] close(3) = 0
[pid 5387] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5387] memfd_create("syzkaller", 0) = 3
[pid 5387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5387] munmap(0x7f9904690000, 262144) = 0
[pid 5387] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5387] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5387] close(3) = 0
[pid 5387] mkdir("./file0", 0777) = 0
[pid 5387] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5387] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5387] chdir("./file0") = 0
[pid 5387] ioctl(4, LOOP_CLR_FD) = 0
[pid 5387] close(4) = 0
[pid 5387] exit_group(0) = ?
[pid 5387] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5387, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./161", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./161/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./161/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./161/binderfs") = 0
umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./161/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./161/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./161/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
[ 61.906069][ T5387] loop0: detected capacity change from 0 to 512
[ 61.915412][ T5387] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.923903][ T5387] EXT4-fs (loop0): 1 truncate cleaned up
rmdir("./161/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./161") = 0
mkdir("./162", 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 5389 attached
, child_tidptr=0x555555b855d0) = 5389
[pid 5389] chdir("./162") = 0
[pid 5389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5389] setpgid(0, 0) = 0
[pid 5389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5389] write(3, "1000", 4) = 4
[pid 5389] close(3) = 0
[pid 5389] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5389] memfd_create("syzkaller", 0) = 3
[pid 5389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5389] munmap(0x7f9904690000, 262144) = 0
[pid 5389] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5389] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5389] close(3) = 0
[pid 5389] mkdir("./file0", 0777) = 0
[pid 5389] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5389] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5389] chdir("./file0") = 0
[pid 5389] ioctl(4, LOOP_CLR_FD) = 0
[pid 5389] close(4) = 0
[pid 5389] exit_group(0) = ?
[pid 5389] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5389, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./162", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./162/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./162/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./162/binderfs") = 0
[ 61.982829][ T5389] loop0: detected capacity change from 0 to 512
[ 61.991928][ T5389] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.000487][ T5389] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./162/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./162/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./162/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./162/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./162") = 0
mkdir("./163", 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=0x555555b855d0) = 5391
./strace-static-x86_64: Process 5391 attached
[pid 5391] chdir("./163") = 0
[pid 5391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5391] setpgid(0, 0) = 0
[pid 5391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5391] write(3, "1000", 4) = 4
[pid 5391] close(3) = 0
[pid 5391] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5391] memfd_create("syzkaller", 0) = 3
[pid 5391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5391] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5391] munmap(0x7f9904690000, 262144) = 0
[pid 5391] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5391] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5391] close(3) = 0
[pid 5391] mkdir("./file0", 0777) = 0
[pid 5391] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5391] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5391] chdir("./file0") = 0
[pid 5391] ioctl(4, LOOP_CLR_FD) = 0
[pid 5391] close(4) = 0
[pid 5391] exit_group(0) = ?
[pid 5391] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5391, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./163", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./163/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./163/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./163/binderfs") = 0
umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./163/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./163/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./163/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
[ 62.064081][ T5391] loop0: detected capacity change from 0 to 512
[ 62.073657][ T5391] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.082369][ T5391] EXT4-fs (loop0): 1 truncate cleaned up
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./163/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./163") = 0
mkdir("./164", 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=0x555555b855d0) = 5393
./strace-static-x86_64: Process 5393 attached
[pid 5393] chdir("./164") = 0
[pid 5393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5393] setpgid(0, 0) = 0
[pid 5393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5393] write(3, "1000", 4) = 4
[pid 5393] close(3) = 0
[pid 5393] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5393] memfd_create("syzkaller", 0) = 3
[pid 5393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5393] munmap(0x7f9904690000, 262144) = 0
[pid 5393] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5393] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5393] close(3) = 0
[pid 5393] mkdir("./file0", 0777) = 0
[pid 5393] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5393] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5393] chdir("./file0") = 0
[pid 5393] ioctl(4, LOOP_CLR_FD) = 0
[pid 5393] close(4) = 0
[pid 5393] exit_group(0) = ?
[pid 5393] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5393, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./164", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./164/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./164/binderfs") = 0
umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./164/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./164/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./164/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./164/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./164") = 0
mkdir("./165", 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=0x555555b855d0) = 5395
./strace-static-x86_64: Process 5395 attached
[pid 5395] chdir("./165") = 0
[pid 5395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5395] setpgid(0, 0) = 0
[pid 5395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5395] write(3, "1000", 4) = 4
[pid 5395] close(3) = 0
[ 62.138105][ T5393] loop0: detected capacity change from 0 to 512
[ 62.147733][ T5393] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.155973][ T5393] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5395] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5395] memfd_create("syzkaller", 0) = 3
[pid 5395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5395] munmap(0x7f9904690000, 262144) = 0
[pid 5395] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5395] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5395] close(3) = 0
[pid 5395] mkdir("./file0", 0777) = 0
[pid 5395] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5395] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5395] chdir("./file0") = 0
[pid 5395] ioctl(4, LOOP_CLR_FD) = 0
[pid 5395] close(4) = 0
[pid 5395] exit_group(0) = ?
[pid 5395] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5395, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./165", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./165/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./165/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./165/binderfs") = 0
umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./165/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./165/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./165/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./165/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./165") = 0
mkdir("./166", 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=0x555555b855d0) = 5397
./strace-static-x86_64: Process 5397 attached
[pid 5397] chdir("./166") = 0
[pid 5397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5397] setpgid(0, 0) = 0
[pid 5397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5397] write(3, "1000", 4) = 4
[pid 5397] close(3) = 0
[pid 5397] symlink("/dev/binderfs", "./binderfs") = 0
[ 62.205025][ T5395] loop0: detected capacity change from 0 to 512
[ 62.214950][ T5395] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.223598][ T5395] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5397] memfd_create("syzkaller", 0) = 3
[pid 5397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5397] munmap(0x7f9904690000, 262144) = 0
[pid 5397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5397] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5397] close(3) = 0
[pid 5397] mkdir("./file0", 0777) = 0
[pid 5397] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5397] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5397] chdir("./file0") = 0
[pid 5397] ioctl(4, LOOP_CLR_FD) = 0
[pid 5397] close(4) = 0
[pid 5397] exit_group(0) = ?
[pid 5397] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5397, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./166", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./166/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./166/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./166/binderfs") = 0
umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./166/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./166/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./166/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./166/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./166") = 0
mkdir("./167", 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=0x555555b855d0) = 5399
./strace-static-x86_64: Process 5399 attached
[pid 5399] chdir("./167") = 0
[pid 5399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5399] setpgid(0, 0) = 0
[pid 5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5399] write(3, "1000", 4) = 4
[pid 5399] close(3) = 0
[pid 5399] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5399] memfd_create("syzkaller", 0) = 3
[pid 5399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5399] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5399] munmap(0x7f9904690000, 262144) = 0
[pid 5399] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.271600][ T5397] loop0: detected capacity change from 0 to 512
[ 62.281276][ T5397] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.290102][ T5397] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5399] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5399] close(3) = 0
[pid 5399] mkdir("./file0", 0777) = 0
[pid 5399] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5399] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5399] chdir("./file0") = 0
[pid 5399] ioctl(4, LOOP_CLR_FD) = 0
[pid 5399] close(4) = 0
[pid 5399] exit_group(0) = ?
[pid 5399] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5399, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./167", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./167/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./167/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./167/binderfs") = 0
umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./167/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./167/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./167/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./167/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./167") = 0
mkdir("./168", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5401
./strace-static-x86_64: Process 5401 attached
[pid 5401] chdir("./168") = 0
[pid 5401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5401] setpgid(0, 0) = 0
[pid 5401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5401] write(3, "1000", 4) = 4
[pid 5401] close(3) = 0
[pid 5401] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5401] memfd_create("syzkaller", 0) = 3
[pid 5401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5401] munmap(0x7f9904690000, 262144) = 0
[pid 5401] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.330591][ T5399] loop0: detected capacity change from 0 to 512
[ 62.340176][ T5399] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.348626][ T5399] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5401] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5401] close(3) = 0
[pid 5401] mkdir("./file0", 0777) = 0
[pid 5401] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5401] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5401] chdir("./file0") = 0
[pid 5401] ioctl(4, LOOP_CLR_FD) = 0
[pid 5401] close(4) = 0
[pid 5401] exit_group(0) = ?
[pid 5401] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5401, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./168", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./168/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./168/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./168/binderfs") = 0
umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./168/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./168/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./168/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./168/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./168") = 0
mkdir("./169", 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=0x555555b855d0) = 5403
./strace-static-x86_64: Process 5403 attached
[pid 5403] chdir("./169") = 0
[pid 5403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5403] setpgid(0, 0) = 0
[pid 5403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5403] write(3, "1000", 4) = 4
[pid 5403] close(3) = 0
[pid 5403] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5403] memfd_create("syzkaller", 0) = 3
[pid 5403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5403] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5403] munmap(0x7f9904690000, 262144) = 0
[pid 5403] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.381650][ T5401] loop0: detected capacity change from 0 to 512
[ 62.383189][ T5063] blk_print_req_error: 8 callbacks suppressed
[ 62.383201][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 62.408476][ T5401] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.416770][ T5401] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5403] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5403] close(3) = 0
[pid 5403] mkdir("./file0", 0777) = 0
[pid 5403] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5403] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5403] chdir("./file0") = 0
[pid 5403] ioctl(4, LOOP_CLR_FD) = 0
[pid 5403] close(4) = 0
[pid 5403] exit_group(0) = ?
[pid 5403] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5403, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./169", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./169/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./169/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./169/binderfs") = 0
umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./169/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./169/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./169/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./169/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./169") = 0
mkdir("./170", 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=0x555555b855d0) = 5405
./strace-static-x86_64: Process 5405 attached
[pid 5405] chdir("./170") = 0
[pid 5405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5405] setpgid(0, 0) = 0
[pid 5405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5405] write(3, "1000", 4) = 4
[pid 5405] close(3) = 0
[pid 5405] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5405] memfd_create("syzkaller", 0) = 3
[pid 5405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5405] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5405] munmap(0x7f9904690000, 262144) = 0
[pid 5405] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.460628][ T5403] loop0: detected capacity change from 0 to 512
[ 62.470578][ T5403] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.478707][ T5403] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5405] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5405] close(3) = 0
[pid 5405] mkdir("./file0", 0777) = 0
[pid 5405] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5405] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5405] chdir("./file0") = 0
[pid 5405] ioctl(4, LOOP_CLR_FD) = 0
[pid 5405] close(4) = 0
[pid 5405] exit_group(0) = ?
[pid 5405] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5405, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./170", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./170/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./170/binderfs") = 0
umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./170/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./170/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./170/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./170/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./170") = 0
mkdir("./171", 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=0x555555b855d0) = 5407
./strace-static-x86_64: Process 5407 attached
[pid 5407] chdir("./171") = 0
[pid 5407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5407] setpgid(0, 0) = 0
[pid 5407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5407] write(3, "1000", 4) = 4
[pid 5407] close(3) = 0
[pid 5407] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5407] memfd_create("syzkaller", 0) = 3
[pid 5407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5407] munmap(0x7f9904690000, 262144) = 0
[pid 5407] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.519515][ T5405] loop0: detected capacity change from 0 to 512
[ 62.528590][ T5405] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.537377][ T5405] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5407] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5407] close(3) = 0
[pid 5407] mkdir("./file0", 0777) = 0
[pid 5407] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5407] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5407] chdir("./file0") = 0
[pid 5407] ioctl(4, LOOP_CLR_FD) = 0
[pid 5407] close(4) = 0
[pid 5407] exit_group(0) = ?
[pid 5407] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5407, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./171", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./171/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./171/binderfs") = 0
umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./171/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./171/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./171/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./171/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./171") = 0
mkdir("./172", 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=0x555555b855d0) = 5409
./strace-static-x86_64: Process 5409 attached
[pid 5409] chdir("./172") = 0
[pid 5409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5409] setpgid(0, 0) = 0
[pid 5409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5409] write(3, "1000", 4) = 4
[pid 5409] close(3) = 0
[pid 5409] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5409] memfd_create("syzkaller", 0) = 3
[pid 5409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5409] munmap(0x7f9904690000, 262144) = 0
[pid 5409] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.575237][ T5407] loop0: detected capacity change from 0 to 512
[ 62.585188][ T5407] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.593962][ T5407] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5409] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5409] close(3) = 0
[pid 5409] mkdir("./file0", 0777) = 0
[pid 5409] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5409] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5409] chdir("./file0") = 0
[pid 5409] ioctl(4, LOOP_CLR_FD) = 0
[pid 5409] close(4) = 0
[pid 5409] exit_group(0) = ?
[pid 5409] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5409, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./172", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./172/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./172/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./172/binderfs") = 0
umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[ 62.635639][ T5409] loop0: detected capacity change from 0 to 512
[ 62.645033][ T5409] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.653942][ T5409] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./172/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./172/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./172/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./172/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./172") = 0
mkdir("./173", 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=0x555555b855d0) = 5411
./strace-static-x86_64: Process 5411 attached
[pid 5411] chdir("./173") = 0
[pid 5411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5411] setpgid(0, 0) = 0
[pid 5411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5411] write(3, "1000", 4) = 4
[pid 5411] close(3) = 0
[pid 5411] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5411] memfd_create("syzkaller", 0) = 3
[pid 5411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5411] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5411] munmap(0x7f9904690000, 262144) = 0
[pid 5411] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5411] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5411] close(3) = 0
[pid 5411] mkdir("./file0", 0777) = 0
[pid 5411] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5411] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5411] chdir("./file0") = 0
[pid 5411] ioctl(4, LOOP_CLR_FD) = 0
[pid 5411] close(4) = 0
[pid 5411] exit_group(0) = ?
[pid 5411] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5411, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./173", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./173/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./173/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./173/binderfs") = 0
umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./173/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./173/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./173/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./173/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./173") = 0
mkdir("./174", 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=0x555555b855d0) = 5413
./strace-static-x86_64: Process 5413 attached
[pid 5413] chdir("./174") = 0
[pid 5413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5413] setpgid(0, 0) = 0
[pid 5413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5413] write(3, "1000", 4) = 4
[pid 5413] close(3) = 0
[pid 5413] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5413] memfd_create("syzkaller", 0) = 3
[pid 5413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5413] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5413] munmap(0x7f9904690000, 262144) = 0
[pid 5413] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.720659][ T5411] loop0: detected capacity change from 0 to 512
[ 62.730315][ T5411] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.738938][ T5411] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5413] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5413] close(3) = 0
[pid 5413] mkdir("./file0", 0777) = 0
[pid 5413] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5413] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5413] chdir("./file0") = 0
[pid 5413] ioctl(4, LOOP_CLR_FD) = 0
[pid 5413] close(4) = 0
[pid 5413] exit_group(0) = ?
[pid 5413] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5413, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./174", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./174/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./174/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./174/binderfs") = 0
umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./174/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./174/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./174/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./174/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./174") = 0
mkdir("./175", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 62.771151][ T5413] loop0: detected capacity change from 0 to 512
[ 62.780853][ T5413] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.789465][ T5413] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5415
./strace-static-x86_64: Process 5415 attached
[pid 5415] chdir("./175") = 0
[pid 5415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5415] setpgid(0, 0) = 0
[pid 5415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5415] write(3, "1000", 4) = 4
[pid 5415] close(3) = 0
[pid 5415] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5415] memfd_create("syzkaller", 0) = 3
[pid 5415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5415] munmap(0x7f9904690000, 262144) = 0
[pid 5415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5415] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5415] close(3) = 0
[pid 5415] mkdir("./file0", 0777) = 0
[pid 5415] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5415] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5415] chdir("./file0") = 0
[pid 5415] ioctl(4, LOOP_CLR_FD) = 0
[pid 5415] close(4) = 0
[pid 5415] exit_group(0) = ?
[pid 5415] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5415, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./175", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./175/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./175/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./175/binderfs") = 0
umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./175/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./175/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./175/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./175/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./175") = 0
mkdir("./176", 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=0x555555b855d0) = 5417
./strace-static-x86_64: Process 5417 attached
[pid 5417] chdir("./176") = 0
[pid 5417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5417] setpgid(0, 0) = 0
[pid 5417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5417] write(3, "1000", 4) = 4
[pid 5417] close(3) = 0
[pid 5417] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5417] memfd_create("syzkaller", 0) = 3
[pid 5417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 62.866337][ T5415] loop0: detected capacity change from 0 to 512
[ 62.875455][ T5415] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.883768][ T5415] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5417] munmap(0x7f9904690000, 262144) = 0
[pid 5417] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5417] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5417] close(3) = 0
[pid 5417] mkdir("./file0", 0777) = 0
[pid 5417] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5417] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5417] chdir("./file0") = 0
[pid 5417] ioctl(4, LOOP_CLR_FD) = 0
[pid 5417] close(4) = 0
[pid 5417] exit_group(0) = ?
[pid 5417] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5417, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./176", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./176/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./176/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./176/binderfs") = 0
umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./176/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./176/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./176/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./176/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./176") = 0
mkdir("./177", 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=0x555555b855d0) = 5419
./strace-static-x86_64: Process 5419 attached
[pid 5419] chdir("./177") = 0
[pid 5419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5419] setpgid(0, 0) = 0
[pid 5419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5419] write(3, "1000", 4) = 4
[pid 5419] close(3) = 0
[pid 5419] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5419] memfd_create("syzkaller", 0) = 3
[pid 5419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5419] munmap(0x7f9904690000, 262144) = 0
[pid 5419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.912089][ T5417] loop0: detected capacity change from 0 to 512
[ 62.915136][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 62.929687][ T5417] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.938331][ T5417] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5419] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5419] close(3) = 0
[pid 5419] mkdir("./file0", 0777) = 0
[pid 5419] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5419] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5419] chdir("./file0") = 0
[pid 5419] ioctl(4, LOOP_CLR_FD) = 0
[pid 5419] close(4) = 0
[pid 5419] exit_group(0) = ?
[pid 5419] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5419, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./177", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./177/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./177/binderfs") = 0
umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./177/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./177/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./177/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./177/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./177") = 0
mkdir("./178", 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=0x555555b855d0) = 5421
./strace-static-x86_64: Process 5421 attached
[pid 5421] chdir("./178") = 0
[pid 5421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5421] setpgid(0, 0) = 0
[pid 5421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5421] write(3, "1000", 4) = 4
[pid 5421] close(3) = 0
[pid 5421] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5421] memfd_create("syzkaller", 0) = 3
[pid 5421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 62.973940][ T5419] loop0: detected capacity change from 0 to 512
[ 62.983315][ T5419] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.991934][ T5419] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5421] munmap(0x7f9904690000, 262144) = 0
[pid 5421] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5421] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5421] close(3) = 0
[pid 5421] mkdir("./file0", 0777) = 0
[pid 5421] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5421] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5421] chdir("./file0") = 0
[pid 5421] ioctl(4, LOOP_CLR_FD) = 0
[pid 5421] close(4) = 0
[pid 5421] exit_group(0) = ?
[pid 5421] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5421, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./178", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./178/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./178/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./178/binderfs") = 0
umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./178/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./178/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./178/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./178/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./178") = 0
mkdir("./179", 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=0x555555b855d0) = 5423
./strace-static-x86_64: Process 5423 attached
[pid 5423] chdir("./179") = 0
[pid 5423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5423] setpgid(0, 0) = 0
[pid 5423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5423] write(3, "1000", 4) = 4
[pid 5423] close(3) = 0
[pid 5423] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5423] memfd_create("syzkaller", 0) = 3
[pid 5423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5423] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5423] munmap(0x7f9904690000, 262144) = 0
[pid 5423] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.037377][ T5421] loop0: detected capacity change from 0 to 512
[ 63.046676][ T5421] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.055024][ T5421] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5423] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5423] close(3) = 0
[pid 5423] mkdir("./file0", 0777) = 0
[pid 5423] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5423] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5423] chdir("./file0") = 0
[pid 5423] ioctl(4, LOOP_CLR_FD) = 0
[pid 5423] close(4) = 0
[pid 5423] exit_group(0) = ?
[pid 5423] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5423, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./179", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./179/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 63.092752][ T5423] loop0: detected capacity change from 0 to 512
[ 63.102924][ T5423] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.111400][ T5423] EXT4-fs (loop0): 1 truncate cleaned up
lstat("./179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./179/binderfs") = 0
umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./179/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./179/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./179/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./179/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./179") = 0
mkdir("./180", 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=0x555555b855d0) = 5425
./strace-static-x86_64: Process 5425 attached
[pid 5425] chdir("./180") = 0
[pid 5425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5425] setpgid(0, 0) = 0
[pid 5425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5425] write(3, "1000", 4) = 4
[pid 5425] close(3) = 0
[pid 5425] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5425] memfd_create("syzkaller", 0) = 3
[pid 5425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5425] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5425] munmap(0x7f9904690000, 262144) = 0
[pid 5425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5425] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5425] close(3) = 0
[pid 5425] mkdir("./file0", 0777) = 0
[pid 5425] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5425] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5425] chdir("./file0") = 0
[pid 5425] ioctl(4, LOOP_CLR_FD) = 0
[pid 5425] close(4) = 0
[pid 5425] exit_group(0) = ?
[pid 5425] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5425, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./180", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./180/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./180/binderfs") = 0
umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./180/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./180/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./180/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./180/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./180") = 0
mkdir("./181", 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=0x555555b855d0) = 5427
./strace-static-x86_64: Process 5427 attached
[pid 5427] chdir("./181") = 0
[pid 5427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5427] setpgid(0, 0) = 0
[pid 5427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5427] write(3, "1000", 4) = 4
[pid 5427] close(3) = 0
[pid 5427] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5427] memfd_create("syzkaller", 0) = 3
[pid 5427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5427] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5427] munmap(0x7f9904690000, 262144) = 0
[pid 5427] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.179862][ T5425] loop0: detected capacity change from 0 to 512
[ 63.189931][ T5425] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.198376][ T5425] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5427] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5427] close(3) = 0
[pid 5427] mkdir("./file0", 0777) = 0
[pid 5427] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5427] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5427] chdir("./file0") = 0
[pid 5427] ioctl(4, LOOP_CLR_FD) = 0
[pid 5427] close(4) = 0
[pid 5427] exit_group(0) = ?
[pid 5427] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5427, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./181", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./181/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./181/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./181/binderfs") = 0
umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[ 63.235201][ T5427] loop0: detected capacity change from 0 to 512
[ 63.244907][ T5427] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.253143][ T5427] EXT4-fs (loop0): 1 truncate cleaned up
lstat("./181/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./181/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./181/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./181/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./181") = 0
mkdir("./182", 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=0x555555b855d0) = 5429
./strace-static-x86_64: Process 5429 attached
[pid 5429] chdir("./182") = 0
[pid 5429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5429] setpgid(0, 0) = 0
[pid 5429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5429] write(3, "1000", 4) = 4
[pid 5429] close(3) = 0
[pid 5429] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5429] memfd_create("syzkaller", 0) = 3
[pid 5429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5429] munmap(0x7f9904690000, 262144) = 0
[pid 5429] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5429] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5429] close(3) = 0
[pid 5429] mkdir("./file0", 0777) = 0
[pid 5429] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5429] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5429] chdir("./file0") = 0
[pid 5429] ioctl(4, LOOP_CLR_FD) = 0
[pid 5429] close(4) = 0
[pid 5429] exit_group(0) = ?
[pid 5429] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5429, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./182", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./182/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./182/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./182/binderfs") = 0
umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./182/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./182/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./182/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./182/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./182") = 0
mkdir("./183", 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 5431 attached
, child_tidptr=0x555555b855d0) = 5431
[pid 5431] chdir("./183") = 0
[pid 5431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5431] setpgid(0, 0) = 0
[pid 5431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5431] write(3, "1000", 4) = 4
[pid 5431] close(3) = 0
[ 63.317530][ T5429] loop0: detected capacity change from 0 to 512
[ 63.327498][ T5429] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.336533][ T5429] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5431] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5431] memfd_create("syzkaller", 0) = 3
[pid 5431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5431] munmap(0x7f9904690000, 262144) = 0
[pid 5431] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5431] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5431] close(3) = 0
[pid 5431] mkdir("./file0", 0777) = 0
[pid 5431] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5431] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5431] chdir("./file0") = 0
[pid 5431] ioctl(4, LOOP_CLR_FD) = 0
[pid 5431] close(4) = 0
[pid 5431] exit_group(0) = ?
[pid 5431] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5431, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./183", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./183/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./183/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./183/binderfs") = 0
umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./183/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./183/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./183/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./183/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./183") = 0
mkdir("./184", 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 5433 attached
, child_tidptr=0x555555b855d0) = 5433
[pid 5433] chdir("./184") = 0
[pid 5433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5433] setpgid(0, 0) = 0
[pid 5433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5433] write(3, "1000", 4) = 4
[pid 5433] close(3) = 0
[pid 5433] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5433] memfd_create("syzkaller", 0) = 3
[pid 5433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[ 63.382869][ T5431] loop0: detected capacity change from 0 to 512
[ 63.393018][ T5431] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.401928][ T5431] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5433] munmap(0x7f9904690000, 262144) = 0
[pid 5433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5433] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5433] close(3) = 0
[pid 5433] mkdir("./file0", 0777) = 0
[pid 5433] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5433] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5433] chdir("./file0") = 0
[pid 5433] ioctl(4, LOOP_CLR_FD) = 0
[pid 5433] close(4) = 0
[pid 5433] exit_group(0) = ?
[pid 5433] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5433, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./184", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./184/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./184/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./184/binderfs") = 0
umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./184/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./184/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./184/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./184/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./184") = 0
mkdir("./185", 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=0x555555b855d0) = 5435
./strace-static-x86_64: Process 5435 attached
[pid 5435] chdir("./185") = 0
[pid 5435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5435] setpgid(0, 0) = 0
[pid 5435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5435] write(3, "1000", 4) = 4
[pid 5435] close(3) = 0
[pid 5435] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5435] memfd_create("syzkaller", 0) = 3
[pid 5435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5435] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5435] munmap(0x7f9904690000, 262144) = 0
[pid 5435] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.446657][ T5433] loop0: detected capacity change from 0 to 512
[ 63.455733][ T5433] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.464440][ T5433] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5435] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5435] close(3) = 0
[pid 5435] mkdir("./file0", 0777) = 0
[pid 5435] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5435] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5435] chdir("./file0") = 0
[pid 5435] ioctl(4, LOOP_CLR_FD) = 0
[pid 5435] close(4) = 0
[pid 5435] exit_group(0) = ?
[pid 5435] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5435, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./185", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./185/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./185/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./185/binderfs") = 0
umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./185/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./185/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./185/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./185/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./185") = 0
mkdir("./186", 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 5437 attached
, child_tidptr=0x555555b855d0) = 5437
[pid 5437] chdir("./186") = 0
[pid 5437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5437] setpgid(0, 0) = 0
[pid 5437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5437] write(3, "1000", 4) = 4
[pid 5437] close(3) = 0
[pid 5437] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5437] memfd_create("syzkaller", 0) = 3
[pid 5437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5437] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5437] munmap(0x7f9904690000, 262144) = 0
[pid 5437] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.499901][ T5435] loop0: detected capacity change from 0 to 512
[ 63.509644][ T5435] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.518528][ T5435] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5437] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5437] close(3) = 0
[pid 5437] mkdir("./file0", 0777) = 0
[pid 5437] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5437] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5437] chdir("./file0") = 0
[pid 5437] ioctl(4, LOOP_CLR_FD) = 0
[pid 5437] close(4) = 0
[pid 5437] exit_group(0) = ?
[pid 5437] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5437, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./186", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./186/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./186/binderfs") = 0
umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./186/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./186/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./186/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./186/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./186") = 0
mkdir("./187", 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=0x555555b855d0) = 5439
./strace-static-x86_64: Process 5439 attached
[pid 5439] chdir("./187") = 0
[pid 5439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5439] setpgid(0, 0) = 0
[pid 5439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5439] write(3, "1000", 4) = 4
[pid 5439] close(3) = 0
[pid 5439] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5439] memfd_create("syzkaller", 0) = 3
[pid 5439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5439] munmap(0x7f9904690000, 262144) = 0
[pid 5439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.558965][ T5437] loop0: detected capacity change from 0 to 512
[ 63.568460][ T5437] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.577306][ T5437] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5439] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5439] close(3) = 0
[pid 5439] mkdir("./file0", 0777) = 0
[pid 5439] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5439] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5439] chdir("./file0") = 0
[pid 5439] ioctl(4, LOOP_CLR_FD) = 0
[pid 5439] close(4) = 0
[pid 5439] exit_group(0) = ?
[pid 5439] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5439, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
umount2("./187", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./187/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./187/binderfs") = 0
umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./187/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./187/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./187/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./187/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./187") = 0
mkdir("./188", 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=0x555555b855d0) = 5441
./strace-static-x86_64: Process 5441 attached
[pid 5441] chdir("./188") = 0
[pid 5441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5441] setpgid(0, 0) = 0
[pid 5441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5441] write(3, "1000", 4) = 4
[pid 5441] close(3) = 0
[pid 5441] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5441] memfd_create("syzkaller", 0) = 3
[pid 5441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5441] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5441] munmap(0x7f9904690000, 262144) = 0
[pid 5441] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.617187][ T5439] loop0: detected capacity change from 0 to 512
[ 63.626651][ T5439] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.634951][ T5439] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5441] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5441] close(3) = 0
[pid 5441] mkdir("./file0", 0777) = 0
[pid 5441] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5441] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5441] chdir("./file0") = 0
[pid 5441] ioctl(4, LOOP_CLR_FD) = 0
[pid 5441] close(4) = 0
[pid 5441] exit_group(0) = ?
[pid 5441] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5441, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./188", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./188/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./188/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./188/binderfs") = 0
umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./188/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./188/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./188/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./188/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./188") = 0
mkdir("./189", 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=0x555555b855d0) = 5443
./strace-static-x86_64: Process 5443 attached
[pid 5443] chdir("./189") = 0
[pid 5443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5443] setpgid(0, 0) = 0
[pid 5443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5443] write(3, "1000", 4) = 4
[pid 5443] close(3) = 0
[pid 5443] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5443] memfd_create("syzkaller", 0) = 3
[pid 5443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5443] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5443] munmap(0x7f9904690000, 262144) = 0
[pid 5443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.671132][ T5441] loop0: detected capacity change from 0 to 512
[ 63.680647][ T5441] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.689238][ T5441] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5443] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5443] close(3) = 0
[pid 5443] mkdir("./file0", 0777) = 0
[pid 5443] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5443] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5443] chdir("./file0") = 0
[pid 5443] ioctl(4, LOOP_CLR_FD) = 0
[pid 5443] close(4) = 0
[pid 5443] exit_group(0) = ?
[pid 5443] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5443, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./189", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./189/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./189/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./189/binderfs") = 0
umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./189/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./189/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./189/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./189/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./189") = 0
mkdir("./190", 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=0x555555b855d0) = 5445
./strace-static-x86_64: Process 5445 attached
[pid 5445] chdir("./190") = 0
[pid 5445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5445] setpgid(0, 0) = 0
[pid 5445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5445] write(3, "1000", 4) = 4
[pid 5445] close(3) = 0
[pid 5445] symlink("/dev/binderfs", "./binderfs") = 0
[ 63.727627][ T5443] loop0: detected capacity change from 0 to 512
[ 63.737248][ T5443] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.745404][ T5443] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5445] memfd_create("syzkaller", 0) = 3
[pid 5445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5445] munmap(0x7f9904690000, 262144) = 0
[pid 5445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5445] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5445] close(3) = 0
[pid 5445] mkdir("./file0", 0777) = 0
[pid 5445] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5445] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5445] chdir("./file0") = 0
[pid 5445] ioctl(4, LOOP_CLR_FD) = 0
[pid 5445] close(4) = 0
[pid 5445] exit_group(0) = ?
[pid 5445] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5445, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./190", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./190/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./190/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./190/binderfs") = 0
umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./190/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./190/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./190/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./190/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./190") = 0
mkdir("./191", 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 5447 attached
[pid 5447] chdir("./191") = 0
[pid 5447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5447] setpgid(0, 0) = 0
[pid 5447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5447] write(3, "1000", 4) = 4
[pid 5447] close(3) = 0
[pid 5447] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5447] memfd_create("syzkaller", 0) = 3
[pid 5447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5061] <... clone resumed>, child_tidptr=0x555555b855d0) = 5447
[pid 5447] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5447] munmap(0x7f9904690000, 262144) = 0
[pid 5447] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.793564][ T5445] loop0: detected capacity change from 0 to 512
[ 63.803478][ T5445] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.812026][ T5445] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5447] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5447] close(3) = 0
[pid 5447] mkdir("./file0", 0777) = 0
[pid 5447] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5447] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5447] chdir("./file0") = 0
[pid 5447] ioctl(4, LOOP_CLR_FD) = 0
[pid 5447] close(4) = 0
[pid 5447] exit_group(0) = ?
[pid 5447] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5447, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
umount2("./191", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./191/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./191/binderfs") = 0
umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./191/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./191/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./191/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./191/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./191") = 0
mkdir("./192", 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=0x555555b855d0) = 5449
./strace-static-x86_64: Process 5449 attached
[pid 5449] chdir("./192") = 0
[pid 5449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5449] setpgid(0, 0) = 0
[pid 5449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5449] write(3, "1000", 4) = 4
[pid 5449] close(3) = 0
[pid 5449] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5449] memfd_create("syzkaller", 0) = 3
[pid 5449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5449] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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
[ 63.846960][ T5447] loop0: detected capacity change from 0 to 512
[ 63.857069][ T5447] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.865532][ T5447] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5449] munmap(0x7f9904690000, 262144) = 0
[pid 5449] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5449] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5449] close(3) = 0
[pid 5449] mkdir("./file0", 0777) = 0
[pid 5449] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5449] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5449] chdir("./file0") = 0
[pid 5449] ioctl(4, LOOP_CLR_FD) = 0
[pid 5449] close(4) = 0
[pid 5449] exit_group(0) = ?
[pid 5449] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5449, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
umount2("./192", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./192/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./192/binderfs") = 0
umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./192/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./192/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./192/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./192/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./192") = 0
mkdir("./193", 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=0x555555b855d0) = 5451
./strace-static-x86_64: Process 5451 attached
[pid 5451] chdir("./193") = 0
[pid 5451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5451] setpgid(0, 0) = 0
[pid 5451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5451] write(3, "1000", 4) = 4
[pid 5451] close(3) = 0
[pid 5451] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5451] memfd_create("syzkaller", 0) = 3
[pid 5451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5451] munmap(0x7f9904690000, 262144) = 0
[pid 5451] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.909623][ T5449] loop0: detected capacity change from 0 to 512
[ 63.919354][ T5449] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.927983][ T5449] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5451] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5451] close(3) = 0
[pid 5451] mkdir("./file0", 0777) = 0
[pid 5451] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5451] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5451] chdir("./file0") = 0
[pid 5451] ioctl(4, LOOP_CLR_FD) = 0
[pid 5451] close(4) = 0
[pid 5451] exit_group(0) = ?
[pid 5451] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5451, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./193", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./193/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./193/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./193/binderfs") = 0
umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./193/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./193/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./193/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./193/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./193") = 0
mkdir("./194", 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=0x555555b855d0) = 5453
./strace-static-x86_64: Process 5453 attached
[pid 5453] chdir("./194") = 0
[pid 5453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5453] setpgid(0, 0) = 0
[pid 5453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5453] write(3, "1000", 4) = 4
[pid 5453] close(3) = 0
[pid 5453] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5453] memfd_create("syzkaller", 0) = 3
[pid 5453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5453] munmap(0x7f9904690000, 262144) = 0
[pid 5453] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.962811][ T5451] loop0: detected capacity change from 0 to 512
[ 63.964878][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 63.980867][ T5451] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.990197][ T5451] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5453] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5453] close(3) = 0
[pid 5453] mkdir("./file0", 0777) = 0
[pid 5453] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5453] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5453] chdir("./file0") = 0
[pid 5453] ioctl(4, LOOP_CLR_FD) = 0
[pid 5453] close(4) = 0
[pid 5453] exit_group(0) = ?
[pid 5453] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5453, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./194", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./194/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./194/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./194/binderfs") = 0
umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./194/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./194/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./194/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./194/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./194") = 0
mkdir("./195", 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=0x555555b855d0) = 5455
./strace-static-x86_64: Process 5455 attached
[pid 5455] chdir("./195") = 0
[pid 5455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5455] setpgid(0, 0) = 0
[ 64.032982][ T5453] loop0: detected capacity change from 0 to 512
[ 64.034304][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 64.050590][ T5453] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.059506][ T5453] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5455] write(3, "1000", 4) = 4
[pid 5455] close(3) = 0
[pid 5455] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5455] memfd_create("syzkaller", 0) = 3
[pid 5455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5455] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5455] munmap(0x7f9904690000, 262144) = 0
[pid 5455] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5455] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5455] close(3) = 0
[pid 5455] mkdir("./file0", 0777) = 0
[pid 5455] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5455] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5455] chdir("./file0") = 0
[pid 5455] ioctl(4, LOOP_CLR_FD) = 0
[pid 5455] close(4) = 0
[pid 5455] exit_group(0) = ?
[pid 5455] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5455, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./195", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./195/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./195/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./195/binderfs") = 0
umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./195/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./195/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./195/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./195/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./195") = 0
mkdir("./196", 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=0x555555b855d0) = 5457
./strace-static-x86_64: Process 5457 attached
[pid 5457] chdir("./196") = 0
[pid 5457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5457] setpgid(0, 0) = 0
[pid 5457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5457] write(3, "1000", 4) = 4
[pid 5457] close(3) = 0
[pid 5457] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5457] memfd_create("syzkaller", 0) = 3
[pid 5457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5457] munmap(0x7f9904690000, 262144) = 0
[ 64.123097][ T5455] loop0: detected capacity change from 0 to 512
[ 64.132550][ T5455] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.141132][ T5455] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5457] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5457] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5457] close(3) = 0
[pid 5457] mkdir("./file0", 0777) = 0
[pid 5457] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5457] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5457] chdir("./file0") = 0
[pid 5457] ioctl(4, LOOP_CLR_FD) = 0
[pid 5457] close(4) = 0
[pid 5457] exit_group(0) = ?
[pid 5457] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5457, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./196", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./196/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./196/binderfs") = 0
umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./196/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
[ 64.183883][ T5457] loop0: detected capacity change from 0 to 512
[ 64.193384][ T5457] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.202396][ T5457] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./196/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./196/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./196/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./196") = 0
mkdir("./197", 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=0x555555b855d0) = 5459
./strace-static-x86_64: Process 5459 attached
[pid 5459] chdir("./197") = 0
[pid 5459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5459] setpgid(0, 0) = 0
[pid 5459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5459] write(3, "1000", 4) = 4
[pid 5459] close(3) = 0
[pid 5459] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5459] memfd_create("syzkaller", 0) = 3
[pid 5459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5459] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5459] munmap(0x7f9904690000, 262144) = 0
[pid 5459] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5459] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5459] close(3) = 0
[pid 5459] mkdir("./file0", 0777) = 0
[pid 5459] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5459] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5459] chdir("./file0") = 0
[pid 5459] ioctl(4, LOOP_CLR_FD) = 0
[pid 5459] close(4) = 0
[pid 5459] exit_group(0) = ?
[pid 5459] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5459, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./197", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./197/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./197/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./197/binderfs") = 0
umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./197/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./197/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./197/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./197/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./197") = 0
mkdir("./198", 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=0x555555b855d0) = 5461
./strace-static-x86_64: Process 5461 attached
[pid 5461] chdir("./198") = 0
[pid 5461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5461] setpgid(0, 0) = 0
[pid 5461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5461] write(3, "1000", 4) = 4
[pid 5461] close(3) = 0
[pid 5461] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5461] memfd_create("syzkaller", 0) = 3
[pid 5461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5461] munmap(0x7f9904690000, 262144) = 0
[pid 5461] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.265039][ T5459] loop0: detected capacity change from 0 to 512
[ 64.274756][ T5459] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.283469][ T5459] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5461] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5461] close(3) = 0
[pid 5461] mkdir("./file0", 0777) = 0
[pid 5461] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5461] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5461] chdir("./file0") = 0
[pid 5461] ioctl(4, LOOP_CLR_FD) = 0
[pid 5461] close(4) = 0
[pid 5461] exit_group(0) = ?
[pid 5461] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5461, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./198", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./198/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./198/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./198/binderfs") = 0
umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./198/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./198/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./198/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./198/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./198") = 0
mkdir("./199", 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=0x555555b855d0) = 5463
./strace-static-x86_64: Process 5463 attached
[pid 5463] chdir("./199") = 0
[pid 5463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5463] setpgid(0, 0) = 0
[pid 5463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5463] write(3, "1000", 4) = 4
[pid 5463] close(3) = 0
[pid 5463] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5463] memfd_create("syzkaller", 0) = 3
[pid 5463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5463] munmap(0x7f9904690000, 262144) = 0
[ 64.323250][ T5461] loop0: detected capacity change from 0 to 512
[ 64.333119][ T5461] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.342013][ T5461] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5463] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5463] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5463] close(3) = 0
[pid 5463] mkdir("./file0", 0777) = 0
[pid 5463] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5463] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5463] chdir("./file0") = 0
[pid 5463] ioctl(4, LOOP_CLR_FD) = 0
[pid 5463] close(4) = 0
[pid 5463] exit_group(0) = ?
[pid 5463] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5463, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./199", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./199", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./199/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./199/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./199/binderfs") = 0
umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./199/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
[ 64.384681][ T5463] loop0: detected capacity change from 0 to 512
[ 64.394114][ T5463] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.402805][ T5463] EXT4-fs (loop0): 1 truncate cleaned up
umount2("./199/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./199/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./199/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./199") = 0
mkdir("./200", 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 5465 attached
, child_tidptr=0x555555b855d0) = 5465
[pid 5465] chdir("./200") = 0
[pid 5465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5465] setpgid(0, 0) = 0
[pid 5465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5465] write(3, "1000", 4) = 4
[pid 5465] close(3) = 0
[pid 5465] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5465] memfd_create("syzkaller", 0) = 3
[pid 5465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5465] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5465] munmap(0x7f9904690000, 262144) = 0
[pid 5465] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5465] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5465] close(3) = 0
[pid 5465] mkdir("./file0", 0777) = 0
[pid 5465] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5465] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5465] chdir("./file0") = 0
[pid 5465] ioctl(4, LOOP_CLR_FD) = 0
[pid 5465] close(4) = 0
[pid 5465] exit_group(0) = ?
[pid 5465] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5465, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
umount2("./200", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./200", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./200/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./200/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./200/binderfs") = 0
umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./200/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./200/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./200/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./200/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./200") = 0
mkdir("./201", 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=0x555555b855d0) = 5467
./strace-static-x86_64: Process 5467 attached
[pid 5467] chdir("./201") = 0
[pid 5467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5467] setpgid(0, 0) = 0
[pid 5467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5467] write(3, "1000", 4) = 4
[pid 5467] close(3) = 0
[pid 5467] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5467] memfd_create("syzkaller", 0) = 3
[pid 5467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5467] munmap(0x7f9904690000, 262144) = 0
[pid 5467] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.469965][ T5465] loop0: detected capacity change from 0 to 512
[ 64.479979][ T5465] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.488912][ T5465] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5467] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5467] close(3) = 0
[pid 5467] mkdir("./file0", 0777) = 0
[pid 5467] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5467] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5467] chdir("./file0") = 0
[pid 5467] ioctl(4, LOOP_CLR_FD) = 0
[pid 5467] close(4) = 0
[pid 5467] exit_group(0) = ?
[pid 5467] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5467, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
umount2("./201", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./201", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./201/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./201/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./201/binderfs") = 0
umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./201/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./201/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./201/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./201/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./201") = 0
mkdir("./202", 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=0x555555b855d0) = 5469
./strace-static-x86_64: Process 5469 attached
[pid 5469] chdir("./202") = 0
[pid 5469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5469] setpgid(0, 0) = 0
[pid 5469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5469] write(3, "1000", 4) = 4
[pid 5469] close(3) = 0
[pid 5469] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5469] memfd_create("syzkaller", 0) = 3
[pid 5469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5469] munmap(0x7f9904690000, 262144) = 0
[pid 5469] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.520095][ T5467] loop0: detected capacity change from 0 to 512
[ 64.524422][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 64.538031][ T5467] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.546777][ T5467] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5469] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5469] close(3) = 0
[pid 5469] mkdir("./file0", 0777) = 0
[pid 5469] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5469] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5469] chdir("./file0") = 0
[pid 5469] ioctl(4, LOOP_CLR_FD) = 0
[pid 5469] close(4) = 0
[pid 5469] exit_group(0) = ?
[pid 5469] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5469, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./202", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./202", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./202/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./202/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./202/binderfs") = 0
umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./202/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./202/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./202/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./202/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./202") = 0
mkdir("./203", 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=0x555555b855d0) = 5471
./strace-static-x86_64: Process 5471 attached
[pid 5471] chdir("./203") = 0
[pid 5471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5471] setpgid(0, 0) = 0
[pid 5471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5471] write(3, "1000", 4) = 4
[pid 5471] close(3) = 0
[pid 5471] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5471] memfd_create("syzkaller", 0) = 3
[pid 5471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5471] munmap(0x7f9904690000, 262144) = 0
[pid 5471] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.594238][ T5469] loop0: detected capacity change from 0 to 512
[ 64.603932][ T5469] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.612650][ T5469] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5471] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5471] close(3) = 0
[pid 5471] mkdir("./file0", 0777) = 0
[pid 5471] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5471] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5471] chdir("./file0") = 0
[pid 5471] ioctl(4, LOOP_CLR_FD) = 0
[pid 5471] close(4) = 0
[pid 5471] exit_group(0) = ?
[pid 5471] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5471, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./203", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./203", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./203/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./203/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./203/binderfs") = 0
umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./203/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./203/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./203/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./203/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./203") = 0
mkdir("./204", 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
[ 64.652975][ T5471] loop0: detected capacity change from 0 to 512
[ 64.663457][ T5471] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.672034][ T5471] EXT4-fs (loop0): 1 truncate cleaned up
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5473
./strace-static-x86_64: Process 5473 attached
[pid 5473] chdir("./204") = 0
[pid 5473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5473] setpgid(0, 0) = 0
[pid 5473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5473] write(3, "1000", 4) = 4
[pid 5473] close(3) = 0
[pid 5473] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5473] memfd_create("syzkaller", 0) = 3
[pid 5473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5473] munmap(0x7f9904690000, 262144) = 0
[pid 5473] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5473] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5473] close(3) = 0
[pid 5473] mkdir("./file0", 0777) = 0
[pid 5473] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5473] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5473] chdir("./file0") = 0
[pid 5473] ioctl(4, LOOP_CLR_FD) = 0
[pid 5473] close(4) = 0
[pid 5473] exit_group(0) = ?
[pid 5473] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5473, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./204", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./204", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./204/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./204/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./204/binderfs") = 0
umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./204/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./204/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./204/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./204/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./204") = 0
mkdir("./205", 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
[ 64.718936][ T5473] loop0: detected capacity change from 0 to 512
[ 64.729032][ T5473] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.737289][ T5473] EXT4-fs (loop0): 1 truncate cleaned up
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5475
./strace-static-x86_64: Process 5475 attached
[pid 5475] chdir("./205") = 0
[pid 5475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5475] setpgid(0, 0) = 0
[pid 5475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5475] write(3, "1000", 4) = 4
[pid 5475] close(3) = 0
[pid 5475] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5475] memfd_create("syzkaller", 0) = 3
[pid 5475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5475] munmap(0x7f9904690000, 262144) = 0
[pid 5475] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5475] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5475] close(3) = 0
[pid 5475] mkdir("./file0", 0777) = 0
[pid 5475] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5475] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5475] chdir("./file0") = 0
[pid 5475] ioctl(4, LOOP_CLR_FD) = 0
[pid 5475] close(4) = 0
[pid 5475] exit_group(0) = ?
[pid 5475] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5475, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./205", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./205", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./205/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./205/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./205/binderfs") = 0
umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./205/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./205/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./205/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./205/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./205") = 0
mkdir("./206", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555b855d0) = 5477
./strace-static-x86_64: Process 5477 attached
[pid 5477] chdir("./206") = 0
[pid 5477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5477] setpgid(0, 0) = 0
[pid 5477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5477] write(3, "1000", 4) = 4
[pid 5477] close(3) = 0
[pid 5477] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5477] memfd_create("syzkaller", 0) = 3
[pid 5477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5477] munmap(0x7f9904690000, 262144) = 0
[pid 5477] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.782001][ T5475] loop0: detected capacity change from 0 to 512
[ 64.792343][ T5475] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.800780][ T5475] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5477] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5477] close(3) = 0
[pid 5477] mkdir("./file0", 0777) = 0
[pid 5477] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5477] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5477] chdir("./file0") = 0
[pid 5477] ioctl(4, LOOP_CLR_FD) = 0
[pid 5477] close(4) = 0
[pid 5477] exit_group(0) = ?
[pid 5477] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5477, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
umount2("./206", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./206", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./206/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./206/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./206/binderfs") = 0
umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./206/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./206/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./206/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./206/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./206") = 0
mkdir("./207", 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 5479 attached
, child_tidptr=0x555555b855d0) = 5479
[pid 5479] chdir("./207") = 0
[pid 5479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5479] setpgid(0, 0) = 0
[pid 5479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5479] write(3, "1000", 4) = 4
[pid 5479] close(3) = 0
[pid 5479] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5479] memfd_create("syzkaller", 0) = 3
[pid 5479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5479] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5479] munmap(0x7f9904690000, 262144) = 0
[ 64.830658][ T5477] loop0: detected capacity change from 0 to 512
[ 64.834962][ T5063] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 64.848366][ T5477] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.857127][ T5477] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5479] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5479] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5479] close(3) = 0
[pid 5479] mkdir("./file0", 0777) = 0
[pid 5479] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5479] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5479] chdir("./file0") = 0
[pid 5479] ioctl(4, LOOP_CLR_FD) = 0
[pid 5479] close(4) = 0
[pid 5479] exit_group(0) = ?
[pid 5479] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5479, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./207", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./207", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./207/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./207/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./207/binderfs") = 0
umount2("./207/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./207/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./207/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./207/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./207/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./207/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./207") = 0
mkdir("./208", 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=0x555555b855d0) = 5481
./strace-static-x86_64: Process 5481 attached
[pid 5481] chdir("./208") = 0
[pid 5481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5481] setpgid(0, 0) = 0
[pid 5481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5481] write(3, "1000", 4) = 4
[pid 5481] close(3) = 0
[pid 5481] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5481] memfd_create("syzkaller", 0) = 3
[pid 5481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5481] munmap(0x7f9904690000, 262144) = 0
[pid 5481] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.894736][ T5479] loop0: detected capacity change from 0 to 512
[ 64.903908][ T5479] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.912432][ T5479] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5481] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5481] close(3) = 0
[pid 5481] mkdir("./file0", 0777) = 0
[pid 5481] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5481] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5481] chdir("./file0") = 0
[pid 5481] ioctl(4, LOOP_CLR_FD) = 0
[pid 5481] close(4) = 0
[pid 5481] exit_group(0) = ?
[pid 5481] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5481, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./208", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./208", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./208/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./208/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./208/binderfs") = 0
umount2("./208/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./208/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./208/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./208/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./208/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./208/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./208") = 0
mkdir("./209", 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=0x555555b855d0) = 5483
./strace-static-x86_64: Process 5483 attached
[pid 5483] chdir("./209") = 0
[pid 5483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5483] setpgid(0, 0) = 0
[pid 5483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5483] write(3, "1000", 4) = 4
[pid 5483] close(3) = 0
[pid 5483] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5483] memfd_create("syzkaller", 0) = 3
[pid 5483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5483] munmap(0x7f9904690000, 262144) = 0
[pid 5483] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.951134][ T5481] loop0: detected capacity change from 0 to 512
[ 64.960275][ T5481] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.968891][ T5481] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5483] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5483] close(3) = 0
[pid 5483] mkdir("./file0", 0777) = 0
[pid 5483] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5483] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5483] chdir("./file0") = 0
[pid 5483] ioctl(4, LOOP_CLR_FD) = 0
[pid 5483] close(4) = 0
[pid 5483] exit_group(0) = ?
[pid 5483] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5483, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
[ 65.004338][ T5483] loop0: detected capacity change from 0 to 512
[ 65.013674][ T5483] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.022176][ T5483] EXT4-fs (loop0): 1 truncate cleaned up
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./209", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./209", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./209/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./209/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./209/binderfs") = 0
umount2("./209/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./209/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./209/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./209/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./209/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./209/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./209") = 0
mkdir("./210", 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 5485 attached
, child_tidptr=0x555555b855d0) = 5485
[pid 5485] chdir("./210") = 0
[pid 5485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5485] setpgid(0, 0) = 0
[pid 5485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5485] write(3, "1000", 4) = 4
[pid 5485] close(3) = 0
[pid 5485] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5485] memfd_create("syzkaller", 0) = 3
[pid 5485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5485] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5485] munmap(0x7f9904690000, 262144) = 0
[pid 5485] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5485] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5485] close(3) = 0
[pid 5485] mkdir("./file0", 0777) = 0
[pid 5485] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5485] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5485] chdir("./file0") = 0
[pid 5485] ioctl(4, LOOP_CLR_FD) = 0
[pid 5485] close(4) = 0
[pid 5485] exit_group(0) = ?
[pid 5485] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5485, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./210", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./210", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x555555b86620 /* 4 entries */, 32768) = 112
umount2("./210/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./210/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0
unlink("./210/binderfs") = 0
umount2("./210/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./210/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./210/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./210/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./210/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x555555b8e660 /* 2 entries */, 32768) = 48
getdents64(4, 0x555555b8e660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./210/file0") = 0
getdents64(3, 0x555555b86620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./210") = 0
mkdir("./211", 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=0x555555b855d0) = 5487
./strace-static-x86_64: Process 5487 attached
[pid 5487] chdir("./211") = 0
[pid 5487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5487] setpgid(0, 0) = 0
[pid 5487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5487] write(3, "1000", 4) = 4
[pid 5487] close(3) = 0
[pid 5487] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5487] memfd_create("syzkaller", 0) = 3
[pid 5487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9904690000
[pid 5487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5487] munmap(0x7f9904690000, 262144) = 0
[pid 5487] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.093941][ T5485] loop0: detected capacity change from 0 to 512
[ 65.103515][ T5485] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.112404][ T5485] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5487] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5487] close(3) = 0
[pid 5487] mkdir("./file0", 0777) = 0
[pid 5487] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, ",errors=continue") = 0
[pid 5487] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5487] chdir("./file0") = 0
[pid 5487] ioctl(4, LOOP_CLR_FD) = 0
[pid 5487] close(4) = 0
[pid 5487] exit_group(0) = ?
[pid 5487] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5487, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0