./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor679009533
<...>
Warning: Permanently added '10.128.1.136' (ECDSA) to the list of known hosts.
execve("./syz-executor679009533", ["./syz-executor679009533"], 0x7ffd10a10320 /* 10 vars */) = 0
brk(NULL) = 0x5555564b8000
brk(0x5555564b8c40) = 0x5555564b8c40
arch_prctl(ARCH_SET_FS, 0x5555564b8300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor679009533", 4096) = 27
brk(0x5555564d9c40) = 0x5555564d9c40
brk(0x5555564da000) = 0x5555564da000
mprotect(0x7f2781d70000, 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() = 5068
mkdir("./syzkaller.mKk4kp", 0700) = 0
chmod("./syzkaller.mKk4kp", 0777) = 0
chdir("./syzkaller.mKk4kp") = 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=0x5555564b85d0) = 5069
./strace-static-x86_64: Process 5069 attached
[pid 5069] chdir("./0") = 0
[pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5069] setpgid(0, 0) = 0
[pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5069] write(3, "1000", 4) = 4
[pid 5069] close(3) = 0
[pid 5069] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5069] memfd_create("syzkaller", 0) = 3
[pid 5069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5069] 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 5069] munmap(0x7f27798b4000, 262144) = 0
[pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5069] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5069] close(3) = 0
[pid 5069] mkdir("./file0", 0777) = 0
[ 54.619820][ T5069] loop0: detected capacity change from 0 to 512
[ 54.629231][ T5069] =======================================================
[ 54.629231][ T5069] WARNING: The mand mount option has been deprecated and
[ 54.629231][ T5069] and is ignored by this kernel. Remove the mand
[ 54.629231][ T5069] option from the mount to silence this warning.
[ 54.629231][ T5069] =======================================================
[pid 5069] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5069] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5069] chdir("./file0") = 0
[pid 5069] ioctl(4, LOOP_CLR_FD) = 0
[pid 5069] close(4) = 0
[pid 5069] exit_group(0) = ?
[pid 5069] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
[ 54.666887][ T5069] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 54.677264][ T5069] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 54.692960][ T5069] EXT4-fs (loop0): 1 truncate cleaned up
[ 54.701346][ T5069] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./0/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5072
./strace-static-x86_64: Process 5072 attached
[pid 5072] chdir("./1") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 54.725569][ T5069] syz-executor679 (5069) used greatest stack depth: 16368 bytes left
[ 54.735144][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5072] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5072] close(3) = 0
[pid 5072] mkdir("./file0", 0777) = 0
[ 54.784967][ T5072] loop0: detected capacity change from 0 to 512
[ 54.786732][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 54.803391][ T5072] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 54.814096][ T5072] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 54.826274][ T5072] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5072] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=6 /* 0.06 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./1/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5074
./strace-static-x86_64: Process 5074 attached
[pid 5074] chdir("./2") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 54.841018][ T5072] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 54.869704][ T5068] 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
[ 54.914313][ T5074] loop0: detected capacity change from 0 to 512
[ 54.924009][ T5074] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 54.934697][ T5074] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 54.944982][ T5074] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5074] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./2/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5076
./strace-static-x86_64: Process 5076 attached
[pid 5076] chdir("./3") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 54.970640][ T5074] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.005359][ T5068] 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
[ 55.051652][ T5076] loop0: detected capacity change from 0 to 512
[ 55.061979][ T5076] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.072508][ T5076] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.082924][ T5076] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5076] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./3/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5078
./strace-static-x86_64: Process 5078 attached
[pid 5078] chdir("./4") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.091442][ T5076] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.120900][ T5068] 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
[ 55.168636][ T5078] loop0: detected capacity change from 0 to 512
[ 55.178964][ T5078] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.189742][ T5078] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.199488][ T5078] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5078] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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
[ 55.211137][ T5078] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./4/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5080
./strace-static-x86_64: Process 5080 attached
[pid 5080] chdir("./5") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.241381][ T5068] 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
[ 55.285248][ T5080] loop0: detected capacity change from 0 to 512
[ 55.294826][ T5080] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.305757][ T5080] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.316019][ T5080] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5080] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./5/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5082
./strace-static-x86_64: Process 5082 attached
[pid 5082] chdir("./6") = 0
[pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5082] setpgid(0, 0) = 0
[pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5082] write(3, "1000", 4) = 4
[pid 5082] close(3) = 0
[pid 5082] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5082] memfd_create("syzkaller", 0) = 3
[pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5082] 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 5082] munmap(0x7f27798b4000, 262144) = 0
[pid 5082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.331139][ T5080] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.353709][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5082] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5082] close(3) = 0
[pid 5082] mkdir("./file0", 0777) = 0
[ 55.402694][ T5082] loop0: detected capacity change from 0 to 512
[ 55.412247][ T5082] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.422868][ T5082] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.434524][ T5082] EXT4-fs (loop0): 1 truncate cleaned up
[ 55.441112][ T5082] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[pid 5082] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5082] chdir("./file0") = 0
[pid 5082] ioctl(4, LOOP_CLR_FD) = 0
[pid 5082] close(4) = 0
[pid 5082] exit_group(0) = ?
[pid 5082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./6/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5084
./strace-static-x86_64: Process 5084 attached
[pid 5084] chdir("./7") = 0
[pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5084] setpgid(0, 0) = 0
[pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5084] write(3, "1000", 4) = 4
[pid 5084] close(3) = 0
[pid 5084] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5084] memfd_create("syzkaller", 0) = 3
[pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5084] 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 5084] munmap(0x7f27798b4000, 262144) = 0
[pid 5084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.469166][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5084] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5084] close(3) = 0
[pid 5084] mkdir("./file0", 0777) = 0
[ 55.514862][ T5084] loop0: detected capacity change from 0 to 512
[ 55.524884][ T5084] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.536504][ T5084] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.546755][ T5084] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5084] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5084] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5084] chdir("./file0") = 0
[pid 5084] ioctl(4, LOOP_CLR_FD) = 0
[pid 5084] close(4) = 0
[pid 5084] exit_group(0) = ?
[pid 5084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./7/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5086
./strace-static-x86_64: Process 5086 attached
[pid 5086] chdir("./8") = 0
[pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5086] setpgid(0, 0) = 0
[pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5086] write(3, "1000", 4) = 4
[pid 5086] close(3) = 0
[pid 5086] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5086] memfd_create("syzkaller", 0) = 3
[pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5086] 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 5086] munmap(0x7f27798b4000, 262144) = 0
[pid 5086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.562523][ T5084] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.589726][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5086] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5086] close(3) = 0
[pid 5086] mkdir("./file0", 0777) = 0
[ 55.637274][ T5086] loop0: detected capacity change from 0 to 512
[ 55.647790][ T5086] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.658392][ T5086] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.668678][ T5086] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5086] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5086] chdir("./file0") = 0
[pid 5086] ioctl(4, LOOP_CLR_FD) = 0
[pid 5086] close(4) = 0
[pid 5086] exit_group(0) = ?
[pid 5086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./8/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5088
./strace-static-x86_64: Process 5088 attached
[pid 5088] chdir("./9") = 0
[pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5088] setpgid(0, 0) = 0
[pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5088] write(3, "1000", 4) = 4
[pid 5088] close(3) = 0
[pid 5088] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5088] memfd_create("syzkaller", 0) = 3
[pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5088] 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 5088] munmap(0x7f27798b4000, 262144) = 0
[pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.682427][ T5086] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.714829][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5088] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5088] close(3) = 0
[pid 5088] mkdir("./file0", 0777) = 0
[ 55.766935][ T5088] loop0: detected capacity change from 0 to 512
[ 55.777881][ T5088] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.788750][ T5088] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.798981][ T5088] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5088] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5088] chdir("./file0") = 0
[pid 5088] ioctl(4, LOOP_CLR_FD) = 0
[pid 5088] close(4) = 0
[pid 5088] exit_group(0) = ?
[pid 5088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./9/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5090
./strace-static-x86_64: Process 5090 attached
[pid 5090] chdir("./10") = 0
[pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5090] setpgid(0, 0) = 0
[pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[ 55.811031][ T5088] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.833410][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5090] write(3, "1000", 4) = 4
[pid 5090] close(3) = 0
[pid 5090] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5090] memfd_create("syzkaller", 0) = 3
[pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5090] 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 5090] munmap(0x7f27798b4000, 262144) = 0
[pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5090] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5090] close(3) = 0
[pid 5090] mkdir("./file0", 0777) = 0
[ 55.889090][ T5090] loop0: detected capacity change from 0 to 512
[ 55.899042][ T5090] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 55.909573][ T5090] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 55.919834][ T5090] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5090] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5090] chdir("./file0") = 0
[pid 5090] ioctl(4, LOOP_CLR_FD) = 0
[pid 5090] close(4) = 0
[pid 5090] exit_group(0) = ?
[pid 5090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./10/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5093
./strace-static-x86_64: Process 5093 attached
[pid 5093] chdir("./11") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 55.930995][ T5090] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 55.958836][ T5068] 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
[ 56.008255][ T5093] loop0: detected capacity change from 0 to 512
[ 56.017646][ T5093] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.028286][ T5093] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.037585][ T5093] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5093] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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
[ 56.050934][ T5093] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./11/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5095
./strace-static-x86_64: Process 5095 attached
[pid 5095] chdir("./12") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.080244][ T5068] 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
[ 56.125088][ T5095] loop0: detected capacity change from 0 to 512
[ 56.135195][ T5095] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.145894][ T5095] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.156857][ T5095] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5095] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./12/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5097
./strace-static-x86_64: Process 5097 attached
[pid 5097] chdir("./13") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.170917][ T5095] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 56.199722][ T5068] 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
[ 56.253449][ T5097] loop0: detected capacity change from 0 to 512
[ 56.263618][ T5097] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.274185][ T5097] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.285591][ T5097] EXT4-fs (loop0): 1 truncate cleaned up
[ 56.291916][ T5097] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[pid 5097] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./13/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5099
./strace-static-x86_64: Process 5099 attached
[pid 5099] chdir("./14") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.323916][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5099] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5099] close(3) = 0
[pid 5099] mkdir("./file0", 0777) = 0
[ 56.378147][ T5099] loop0: detected capacity change from 0 to 512
[ 56.388231][ T5099] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.399016][ T5099] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.409414][ T5099] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5099] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=7 /* 0.07 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, 0x5555564b9620 /* 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
[ 56.420902][ T5099] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./14/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5101
./strace-static-x86_64: Process 5101 attached
[pid 5101] chdir("./15") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.452541][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5101] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5101] close(3) = 0
[pid 5101] mkdir("./file0", 0777) = 0
[ 56.500121][ T5101] loop0: detected capacity change from 0 to 512
[ 56.509669][ T5101] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.520082][ T5101] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.531103][ T5101] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5101] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
[ 56.540840][ T5101] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./15/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5103
./strace-static-x86_64: Process 5103 attached
[pid 5103] chdir("./16") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5103] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5103] close(3) = 0
[pid 5103] mkdir("./file0", 0777) = 0
[ 56.575126][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[ 56.612944][ T5103] loop0: detected capacity change from 0 to 512
[pid 5103] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
[ 56.625923][ T5103] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.636693][ T5103] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.645982][ T5103] EXT4-fs (loop0): 1 truncate cleaned up
[ 56.661014][ T5103] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./16/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5105
./strace-static-x86_64: Process 5105 attached
[pid 5105] chdir("./17") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.690064][ T5068] 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
[ 56.743771][ T5105] loop0: detected capacity change from 0 to 512
[ 56.754413][ T5105] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.764961][ T5105] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.774762][ T5105] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5105] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./17/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5107
./strace-static-x86_64: Process 5107 attached
[pid 5107] chdir("./18") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.782611][ T5105] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 56.811855][ T5068] 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=6 /* 0.06 s */} ---
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, 0x5555564b9620 /* 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
[ 56.865444][ T5107] loop0: detected capacity change from 0 to 512
[ 56.875091][ T5107] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.885702][ T5107] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 56.895725][ T5107] EXT4-fs (loop0): 1 truncate cleaned up
[ 56.903279][ T5107] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./18/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5109
./strace-static-x86_64: Process 5109 attached
[pid 5109] chdir("./19") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 56.929927][ T5068] 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
[ 56.976438][ T5109] loop0: detected capacity change from 0 to 512
[ 56.986478][ T5109] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 56.997042][ T5109] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.008445][ T5109] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5109] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./19/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5111
./strace-static-x86_64: Process 5111 attached
[pid 5111] chdir("./20") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.020929][ T5109] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.044265][ T5068] 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
[ 57.086411][ T5111] loop0: detected capacity change from 0 to 512
[ 57.097230][ T5111] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.108267][ T5111] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.117913][ T5111] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5111] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./20/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5113
./strace-static-x86_64: Process 5113 attached
[pid 5113] chdir("./21") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.132414][ T5111] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.153734][ T5068] 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
[ 57.204630][ T5113] loop0: detected capacity change from 0 to 512
[ 57.214798][ T5113] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.225583][ T5113] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.235586][ T5113] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5113] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=6 /* 0.06 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./21/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5115
./strace-static-x86_64: Process 5115 attached
[pid 5115] chdir("./22") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.250933][ T5113] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.280923][ T5068] 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
[ 57.321836][ T5115] loop0: detected capacity change from 0 to 512
[ 57.332176][ T5115] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.342821][ T5115] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.352824][ T5115] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5115] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./22/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5117
./strace-static-x86_64: Process 5117 attached
[pid 5117] chdir("./23") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.361197][ T5115] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.391730][ T5068] 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
[ 57.440179][ T5117] loop0: detected capacity change from 0 to 512
[ 57.449750][ T5117] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.460175][ T5117] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.472667][ T5117] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5117] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
[ 57.480963][ T5117] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./23/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5119
./strace-static-x86_64: Process 5119 attached
[pid 5119] chdir("./24") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.511040][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5119] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5119] close(3) = 0
[pid 5119] mkdir("./file0", 0777) = 0
[ 57.558362][ T5119] loop0: detected capacity change from 0 to 512
[ 57.568071][ T5119] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.579285][ T5119] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.588800][ T5119] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5119] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
[ 57.600937][ T5119] 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./24/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5122
./strace-static-x86_64: Process 5122 attached
[pid 5122] chdir("./25") = 0
[pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5122] setpgid(0, 0) = 0
[pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5122] write(3, "1000", 4) = 4
[pid 5122] close(3) = 0
[pid 5122] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5122] memfd_create("syzkaller", 0) = 3
[pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5122] 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 5122] munmap(0x7f27798b4000, 262144) = 0
[pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.635210][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5122] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5122] close(3) = 0
[pid 5122] mkdir("./file0", 0777) = 0
[ 57.675693][ T5122] loop0: detected capacity change from 0 to 512
[ 57.685901][ T5122] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.696348][ T5122] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.706480][ T5122] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5122] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5122] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5122] chdir("./file0") = 0
[pid 5122] ioctl(4, LOOP_CLR_FD) = 0
[pid 5122] close(4) = 0
[pid 5122] exit_group(0) = ?
[pid 5122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./25/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5124
./strace-static-x86_64: Process 5124 attached
[pid 5124] chdir("./26") = 0
[pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5124] setpgid(0, 0) = 0
[pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5124] write(3, "1000", 4) = 4
[pid 5124] close(3) = 0
[pid 5124] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5124] memfd_create("syzkaller", 0) = 3
[pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5124] 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 5124] munmap(0x7f27798b4000, 262144) = 0
[pid 5124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.720933][ T5122] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.746394][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5124] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5124] close(3) = 0
[pid 5124] mkdir("./file0", 0777) = 0
[ 57.781159][ T5124] loop0: detected capacity change from 0 to 512
[ 57.786623][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 57.800738][ T5124] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.812332][ T5124] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.822788][ T5124] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5124] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5124] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5124] chdir("./file0") = 0
[pid 5124] ioctl(4, LOOP_CLR_FD) = 0
[pid 5124] close(4) = 0
[pid 5124] exit_group(0) = ?
[pid 5124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./26/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5126
./strace-static-x86_64: Process 5126 attached
[pid 5126] chdir("./27") = 0
[pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5126] setpgid(0, 0) = 0
[pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5126] write(3, "1000", 4) = 4
[pid 5126] close(3) = 0
[pid 5126] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5126] memfd_create("syzkaller", 0) = 3
[pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5126] 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 5126] munmap(0x7f27798b4000, 262144) = 0
[pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.831510][ T5124] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.858148][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5126] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5126] close(3) = 0
[pid 5126] mkdir("./file0", 0777) = 0
[ 57.904947][ T5126] loop0: detected capacity change from 0 to 512
[ 57.914516][ T5126] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 57.925808][ T5126] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 57.935791][ T5126] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5126] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5126] chdir("./file0") = 0
[pid 5126] ioctl(4, LOOP_CLR_FD) = 0
[pid 5126] close(4) = 0
[pid 5126] exit_group(0) = ?
[pid 5126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./27/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5128
./strace-static-x86_64: Process 5128 attached
[pid 5128] chdir("./28") = 0
[pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5128] setpgid(0, 0) = 0
[pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5128] write(3, "1000", 4) = 4
[pid 5128] close(3) = 0
[pid 5128] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5128] memfd_create("syzkaller", 0) = 3
[pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5128] 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 5128] munmap(0x7f27798b4000, 262144) = 0
[pid 5128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.960617][ T5126] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 57.988879][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5128] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5128] close(3) = 0
[pid 5128] mkdir("./file0", 0777) = 0
[ 58.041425][ T5128] loop0: detected capacity change from 0 to 512
[ 58.051504][ T5128] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.061786][ T5128] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.071831][ T5128] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5128] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5128] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5128] chdir("./file0") = 0
[pid 5128] ioctl(4, LOOP_CLR_FD) = 0
[pid 5128] close(4) = 0
[pid 5128] exit_group(0) = ?
[pid 5128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./28/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5130
./strace-static-x86_64: Process 5130 attached
[pid 5130] chdir("./29") = 0
[pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5130] setpgid(0, 0) = 0
[pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5130] write(3, "1000", 4) = 4
[pid 5130] close(3) = 0
[pid 5130] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5130] memfd_create("syzkaller", 0) = 3
[pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5130] 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 5130] munmap(0x7f27798b4000, 262144) = 0
[pid 5130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.081099][ T5128] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 58.097251][ T5128] syz-executor679 (5128) used greatest stack depth: 15904 bytes left
[ 58.111795][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5130] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5130] close(3) = 0
[pid 5130] mkdir("./file0", 0777) = 0
[ 58.148400][ T5130] loop0: detected capacity change from 0 to 512
[ 58.149915][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 58.165809][ T5130] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.176518][ T5130] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.186745][ T5130] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5130] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5130] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5130] chdir("./file0") = 0
[pid 5130] ioctl(4, LOOP_CLR_FD) = 0
[pid 5130] close(4) = 0
[pid 5130] exit_group(0) = ?
[pid 5130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./29/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5132
./strace-static-x86_64: Process 5132 attached
[pid 5132] chdir("./30") = 0
[pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5132] setpgid(0, 0) = 0
[pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5132] write(3, "1000", 4) = 4
[pid 5132] close(3) = 0
[pid 5132] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5132] memfd_create("syzkaller", 0) = 3
[pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5132] 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
[ 58.200973][ T5130] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 58.222793][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5132] munmap(0x7f27798b4000, 262144) = 0
[pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5132] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5132] close(3) = 0
[pid 5132] mkdir("./file0", 0777) = 0
[ 58.284441][ T5132] loop0: detected capacity change from 0 to 512
[ 58.295795][ T5132] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.306142][ T5132] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.316450][ T5132] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5132] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5132] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5132] chdir("./file0") = 0
[pid 5132] ioctl(4, LOOP_CLR_FD) = 0
[pid 5132] close(4) = 0
[pid 5132] exit_group(0) = ?
[pid 5132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./30/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5134
./strace-static-x86_64: Process 5134 attached
[pid 5134] chdir("./31") = 0
[pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5134] setpgid(0, 0) = 0
[pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5134] write(3, "1000", 4) = 4
[pid 5134] close(3) = 0
[pid 5134] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5134] memfd_create("syzkaller", 0) = 3
[pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5134] 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 5134] munmap(0x7f27798b4000, 262144) = 0
[ 58.330969][ T5132] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 58.362202][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5134] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5134] close(3) = 0
[pid 5134] mkdir("./file0", 0777) = 0
[ 58.415703][ T5134] loop0: detected capacity change from 0 to 512
[ 58.425416][ T5134] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.436105][ T5134] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.446100][ T5134] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5134] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5134] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5134] chdir("./file0") = 0
[pid 5134] ioctl(4, LOOP_CLR_FD) = 0
[pid 5134] close(4) = 0
[pid 5134] exit_group(0) = ?
[pid 5134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./31/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5136
./strace-static-x86_64: Process 5136 attached
[pid 5136] chdir("./32") = 0
[pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5136] setpgid(0, 0) = 0
[pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5136] write(3, "1000", 4) = 4
[pid 5136] close(3) = 0
[pid 5136] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5136] memfd_create("syzkaller", 0) = 3
[pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5136] 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 5136] munmap(0x7f27798b4000, 262144) = 0
[pid 5136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.461458][ T5134] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: writeback.
[ 58.483242][ T5068] EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.
[pid 5136] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5136] close(3) = 0
[pid 5136] mkdir("./file0", 0777) = 0
[pid 5136] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5136] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5136] chdir("./file0") = 0
[pid 5136] ioctl(4, LOOP_CLR_FD) = 0
[pid 5136] close(4) = 0
[pid 5136] exit_group(0) = ?
[pid 5136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./32/file0") = 0
getdents64(3, 0x5555564b9620 /* 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)
[ 58.527581][ T5136] loop0: detected capacity change from 0 to 512
[ 58.539090][ T5136] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.549836][ T5136] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.560021][ T5136] EXT4-fs (loop0): 1 truncate cleaned up
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5138
./strace-static-x86_64: Process 5138 attached
[pid 5138] chdir("./33") = 0
[pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5138] setpgid(0, 0) = 0
[pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5138] write(3, "1000", 4) = 4
[pid 5138] close(3) = 0
[pid 5138] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5138] memfd_create("syzkaller", 0) = 3
[pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5138] 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 5138] munmap(0x7f27798b4000, 262144) = 0
[pid 5138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5138] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5138] close(3) = 0
[pid 5138] mkdir("./file0", 0777) = 0
[pid 5138] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5138] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5138] chdir("./file0") = 0
[pid 5138] ioctl(4, LOOP_CLR_FD) = 0
[pid 5138] close(4) = 0
[pid 5138] exit_group(0) = ?
[pid 5138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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)
[ 58.625232][ T5138] loop0: detected capacity change from 0 to 512
[ 58.635038][ T5138] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.645683][ T5138] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.655523][ T5138] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./33/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5140
./strace-static-x86_64: Process 5140 attached
[pid 5140] chdir("./34") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./34/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./34") = 0
mkdir("./35", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5142
./strace-static-x86_64: Process 5142 attached
[pid 5142] chdir("./35") = 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) = 0x7f27798b4000
[ 58.732441][ T5140] loop0: detected capacity change from 0 to 512
[ 58.742404][ T5140] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.752995][ T5140] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.763349][ T5140] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./35/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5144
./strace-static-x86_64: Process 5144 attached
[pid 5144] chdir("./36") = 0
[pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5144] setpgid(0, 0) = 0
[ 58.818069][ T5142] loop0: detected capacity change from 0 to 512
[ 58.828489][ T5142] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.838720][ T5142] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.848022][ T5142] EXT4-fs (loop0): 1 truncate cleaned up
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=5 /* 0.05 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./36/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./36") = 0
mkdir("./37", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5146
./strace-static-x86_64: Process 5146 attached
[pid 5146] chdir("./37") = 0
[pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5146] setpgid(0, 0) = 0
[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) = 0x7f27798b4000
[ 58.913191][ T5144] loop0: detected capacity change from 0 to 512
[ 58.922648][ T5144] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 58.933431][ T5144] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 58.943831][ T5144] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
[ 59.001479][ T5146] loop0: detected capacity change from 0 to 512
[ 59.011903][ T5146] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.022316][ T5146] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.033642][ T5146] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./37/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./37") = 0
mkdir("./38", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5148
./strace-static-x86_64: Process 5148 attached
[pid 5148] chdir("./38") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./38/file0") = 0
getdents64(3, 0x5555564b9620 /* 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
[ 59.138060][ T5148] loop0: detected capacity change from 0 to 512
[ 59.147293][ T5148] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.157921][ T5148] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.168452][ T5148] EXT4-fs (loop0): 1 truncate cleaned up
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5150
./strace-static-x86_64: Process 5150 attached
[pid 5150] chdir("./39") = 0
[pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5150] setpgid(0, 0) = 0
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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)
[ 59.235381][ T5150] loop0: detected capacity change from 0 to 512
[ 59.244833][ T5150] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.255362][ T5150] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.265266][ T5150] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./39/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5152
./strace-static-x86_64: Process 5152 attached
[pid 5152] chdir("./40") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./40/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
[ 59.338951][ T5152] loop0: detected capacity change from 0 to 512
[ 59.345112][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.355901][ T5152] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.367023][ T5152] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.378922][ T5152] EXT4-fs (loop0): 1 truncate cleaned up
rmdir("./40") = 0
mkdir("./41", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5154
./strace-static-x86_64: Process 5154 attached
[pid 5154] chdir("./41") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./41/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5156
[ 59.455209][ T5154] loop0: detected capacity change from 0 to 512
[ 59.464755][ T5154] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.475035][ T5154] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.484710][ T5154] EXT4-fs (loop0): 1 truncate cleaned up
./strace-static-x86_64: Process 5156 attached
[pid 5156] chdir("./42") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./42/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5158
./strace-static-x86_64: Process 5158 attached
[pid 5158] chdir("./43") = 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) = 0x7f27798b4000
[ 59.559359][ T5156] loop0: detected capacity change from 0 to 512
[ 59.570749][ T5156] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.582371][ T5156] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.592180][ 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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./43/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5160
./strace-static-x86_64: Process 5160 attached
[pid 5160] chdir("./44") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 59.645418][ T5158] loop0: detected capacity change from 0 to 512
[ 59.658455][ T5158] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.669526][ T5158] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.679315][ T5158] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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
[ 59.725406][ T5160] loop0: detected capacity change from 0 to 512
[ 59.728999][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 59.743403][ T5160] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.755125][ T5160] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.764942][ T5160] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./44/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5162
./strace-static-x86_64: Process 5162 attached
[pid 5162] chdir("./45") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./45/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./45") = 0
[ 59.825919][ T5162] loop0: detected capacity change from 0 to 512
[ 59.836491][ T5162] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.848716][ T5162] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.860622][ T5162] EXT4-fs (loop0): 1 truncate cleaned up
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=0x5555564b85d0) = 5164
./strace-static-x86_64: Process 5164 attached
[pid 5164] chdir("./46") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./46/file0") = 0
getdents64(3, 0x5555564b9620 /* 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)
[ 59.933569][ T5164] loop0: detected capacity change from 0 to 512
[ 59.942792][ T5164] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 59.953592][ T5164] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 59.964559][ T5164] EXT4-fs (loop0): 1 truncate cleaned up
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5166 attached
, child_tidptr=0x5555564b85d0) = 5166
[pid 5166] chdir("./47") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./47/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./47") = 0
mkdir("./48", 0777) = 0
[ 60.038264][ T5166] loop0: detected capacity change from 0 to 512
[ 60.048264][ T5166] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.059298][ T5166] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.069537][ T5166] EXT4-fs (loop0): 1 truncate cleaned up
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_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=0x5555564b85d0) = 5168
./strace-static-x86_64: Process 5168 attached
[pid 5168] chdir("./48") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./48/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5170
./strace-static-x86_64: Process 5170 attached
[pid 5170] chdir("./49") = 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) = 0x7f27798b4000
[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
[ 60.127810][ T5168] loop0: detected capacity change from 0 to 512
[ 60.137037][ T5168] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.147748][ T5168] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.158007][ T5168] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5170] munmap(0x7f27798b4000, 262144) = 0
[pid 5170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./49/file0") = 0
[ 60.210758][ T5170] loop0: detected capacity change from 0 to 512
[ 60.217191][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 60.228899][ T5170] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.241650][ T5170] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.252554][ T5170] EXT4-fs (loop0): 1 truncate cleaned up
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5172
./strace-static-x86_64: Process 5172 attached
[pid 5172] chdir("./50") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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)
[ 60.316029][ T5172] loop0: detected capacity change from 0 to 512
[ 60.337357][ T5172] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.347620][ T5172] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.357587][ T5172] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./50/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5174
./strace-static-x86_64: Process 5174 attached
[pid 5174] chdir("./51") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./51/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5176
./strace-static-x86_64: Process 5176 attached
[pid 5176] chdir("./52") = 0
[pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5176] setpgid(0, 0) = 0
[ 60.426204][ T5174] loop0: detected capacity change from 0 to 512
[ 60.435948][ T5174] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.446795][ T5174] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.457806][ T5174] EXT4-fs (loop0): 1 truncate cleaned up
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./52/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./52") = 0
mkdir("./53", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
[ 60.520873][ T5176] loop0: detected capacity change from 0 to 512
[ 60.530240][ T5176] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.541134][ T5176] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.550606][ T5176] EXT4-fs (loop0): 1 truncate cleaned up
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5178
./strace-static-x86_64: Process 5178 attached
[pid 5178] chdir("./53") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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
[pid 5178] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./53/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5180
./strace-static-x86_64: Process 5180 attached
[pid 5180] chdir("./54") = 0
[pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[ 60.618119][ T5178] loop0: detected capacity change from 0 to 512
[ 60.627275][ T5178] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.637608][ T5178] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.647627][ T5178] EXT4-fs (loop0): 1 truncate cleaned up
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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)
[ 60.713477][ T5180] loop0: detected capacity change from 0 to 512
[ 60.723071][ T5180] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.733779][ T5180] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.744123][ T5180] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./54/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5182
./strace-static-x86_64: Process 5182 attached
[pid 5182] chdir("./55") = 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
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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
[ 60.814410][ T5182] loop0: detected capacity change from 0 to 512
[ 60.824343][ T5182] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.834773][ T5182] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.844707][ T5182] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./55/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./55") = 0
mkdir("./56", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5184
./strace-static-x86_64: Process 5184 attached
[pid 5184] chdir("./56") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./56/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5186
./strace-static-x86_64: Process 5186 attached
[pid 5186] chdir("./57") = 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
[ 60.926927][ T5184] loop0: detected capacity change from 0 to 512
[ 60.937098][ T5184] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 60.947421][ T5184] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 60.957226][ T5184] EXT4-fs (loop0): 1 truncate cleaned up
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./57/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./57") = 0
mkdir("./58", 0777) = 0
[ 61.018138][ T5186] loop0: detected capacity change from 0 to 512
[ 61.027794][ T5186] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 61.038200][ T5186] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.049099][ T5186] EXT4-fs (loop0): 1 truncate cleaned up
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_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=0x5555564b85d0) = 5188
./strace-static-x86_64: Process 5188 attached
[pid 5188] chdir("./58") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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
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
[ 61.131937][ T5188] loop0: detected capacity change from 0 to 512
[ 61.143244][ T5188] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 61.153822][ T5188] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.164811][ T5188] EXT4-fs (loop0): 1 truncate cleaned up
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./58/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5190
./strace-static-x86_64: Process 5190 attached
[pid 5190] chdir("./59") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5190] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5190] close(3) = 0
[pid 5190] mkdir("./file0", 0777) = 0
[ 61.255886][ T5190] loop0: detected capacity change from 0 to 512
[ 61.268096][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 61.291984][ T5190] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[pid 5190] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./59/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
[ 61.303484][ T5190] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.314647][ T5190] EXT4-fs (loop0): 1 truncate cleaned up
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=0x5555564b85d0) = 5192
./strace-static-x86_64: Process 5192 attached
[pid 5192] chdir("./60") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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
[ 61.388256][ T5192] loop0: detected capacity change from 0 to 512
[ 61.398232][ T5192] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 61.408425][ T5192] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 61.419621][ T5192]
[ 61.421961][ T5192] ======================================================
[ 61.428953][ T5192] WARNING: possible circular locking dependency detected
[ 61.435947][ T5192] 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0 Not tainted
[ 61.442595][ T5192] ------------------------------------------------------
[ 61.449586][ T5192] syz-executor679/5192 is trying to acquire lock:
[ 61.455972][ T5192] ffff8880762075a8 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x58/0x4e0
[ 61.464838][ T5192]
[ 61.464838][ T5192] but task is already holding lock:
[ 61.472176][ T5192] ffff8880760aaaa8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x9f4/0xea0
[ 61.481372][ T5192]
[ 61.481372][ T5192] which lock already depends on the new lock.
[ 61.481372][ T5192]
[ 61.491748][ T5192]
[ 61.491748][ T5192] the existing dependency chain (in reverse order) is:
[ 61.500733][ T5192]
[ 61.500733][ T5192] -> #2 (&ei->i_data_sem/2){++++}-{3:3}:
[ 61.508524][ T5192] lock_acquire+0x182/0x3c0
[ 61.513528][ T5192] down_read+0x39/0x50
[ 61.518105][ T5192] ext4_map_blocks+0x398/0x1cc0
[ 61.523457][ T5192] ext4_getblk+0x1b9/0x770
[ 61.528375][ T5192] ext4_bread+0x2a/0x170
[ 61.533149][ T5192] ext4_quota_write+0x225/0x570
[ 61.538499][ T5192] get_free_dqblk+0x34a/0x6d0
[ 61.543683][ T5192] do_insert_tree+0x26b/0x1aa0
[ 61.549036][ T5192] do_insert_tree+0x722/0x1aa0
[ 61.554301][ T5192] do_insert_tree+0x722/0x1aa0
[ 61.559568][ T5192] do_insert_tree+0x722/0x1aa0
[ 61.564831][ T5192] qtree_write_dquot+0x3b6/0x530
[ 61.570269][ T5192] v2_write_dquot+0x11b/0x190
[ 61.575448][ T5192] dquot_acquire+0x348/0x670
[ 61.580536][ T5192] ext4_acquire_dquot+0x2dc/0x400
[ 61.586061][ T5192] dqget+0x999/0xdc0
[ 61.590459][ T5192] __dquot_initialize+0x3d0/0xcf0
[ 61.595984][ T5192] ext4_process_orphan+0x57/0x2d0
[ 61.601505][ T5192] ext4_orphan_cleanup+0xb60/0x1340
[ 61.607199][ T5192] ext4_fill_super+0x81cd/0x8700
[ 61.612636][ T5192] get_tree_bdev+0x400/0x620
[ 61.617727][ T5192] vfs_get_tree+0x88/0x270
[ 61.622641][ T5192] do_new_mount+0x289/0xad0
[ 61.627645][ T5192] __se_sys_mount+0x2d3/0x3c0
[ 61.632818][ T5192] do_syscall_64+0x3d/0xb0
[ 61.637732][ T5192] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 61.644123][ T5192]
[ 61.644123][ T5192] -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}:
[ 61.652171][ T5192] lock_acquire+0x182/0x3c0
[ 61.657171][ T5192] down_read+0x39/0x50
[ 61.661735][ T5192] v2_read_dquot+0x4a/0x100
[ 61.666738][ T5192] dquot_acquire+0x186/0x670
[ 61.671826][ T5192] ext4_acquire_dquot+0x2dc/0x400
[ 61.677349][ T5192] dqget+0x999/0xdc0
[ 61.681741][ T5192] __dquot_initialize+0x291/0xcf0
[ 61.687263][ T5192] ext4_process_orphan+0x57/0x2d0
[ 61.692787][ T5192] ext4_orphan_cleanup+0xb60/0x1340
[ 61.698479][ T5192] ext4_fill_super+0x81cd/0x8700
[ 61.703917][ T5192] get_tree_bdev+0x400/0x620
[ 61.709009][ T5192] vfs_get_tree+0x88/0x270
[ 61.713922][ T5192] do_new_mount+0x289/0xad0
[ 61.718921][ T5192] __se_sys_mount+0x2d3/0x3c0
[ 61.724095][ T5192] do_syscall_64+0x3d/0xb0
[ 61.729009][ T5192] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 61.735400][ T5192]
[ 61.735400][ T5192] -> #0 (&dquot->dq_lock){+.+.}-{3:3}:
[ 61.743016][ T5192] validate_chain+0x1898/0x6ae0
[ 61.748365][ T5192] __lock_acquire+0x1292/0x1f60
[ 61.753713][ T5192] lock_acquire+0x182/0x3c0
[ 61.758712][ T5192] __mutex_lock_common+0x1bd/0x26e0
[ 61.764405][ T5192] mutex_lock_nested+0x17/0x20
[ 61.769670][ T5192] dquot_commit+0x58/0x4e0
[ 61.774589][ T5192] ext4_write_dquot+0x1ea/0x2b0
[ 61.779939][ T5192] __dquot_free_space+0x9b8/0xfd0
[ 61.785460][ T5192] ext4_free_blocks+0x1c4a/0x2810
[ 61.790985][ T5192] ext4_ext_remove_space+0x1f5f/0x46a0
[ 61.796941][ T5192] ext4_ext_truncate+0x177/0x220
[ 61.802373][ T5192] ext4_truncate+0xa6a/0xea0
[ 61.807464][ T5192] ext4_process_orphan+0x1aa/0x2d0
[ 61.813072][ T5192] ext4_orphan_cleanup+0xb60/0x1340
[ 61.818774][ T5192] ext4_fill_super+0x81cd/0x8700
[ 61.824211][ T5192] get_tree_bdev+0x400/0x620
[ 61.829304][ T5192] vfs_get_tree+0x88/0x270
[ 61.834216][ T5192] do_new_mount+0x289/0xad0
[ 61.839214][ T5192] __se_sys_mount+0x2d3/0x3c0
[ 61.844386][ T5192] do_syscall_64+0x3d/0xb0
[ 61.849303][ T5192] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 61.855695][ T5192]
[ 61.855695][ T5192] other info that might help us debug this:
[ 61.855695][ T5192]
[ 61.865900][ T5192] Chain exists of:
[ 61.865900][ T5192] &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2
[ 61.865900][ T5192]
[ 61.879513][ T5192] Possible unsafe locking scenario:
[ 61.879513][ T5192]
[ 61.886937][ T5192] CPU0 CPU1
[ 61.892314][ T5192] ---- ----
[ 61.897655][ T5192] lock(&ei->i_data_sem/2);
[ 61.902226][ T5192] lock(&s->s_dquot.dqio_sem);
[ 61.909570][ T5192] lock(&ei->i_data_sem/2);
[ 61.916657][ T5192] lock(&dquot->dq_lock);
[ 61.921048][ T5192]
[ 61.921048][ T5192] *** DEADLOCK ***
[ 61.921048][ T5192]
[ 61.929168][ T5192] 4 locks held by syz-executor679/5192:
[ 61.934685][ T5192] #0: ffff88807e6b20e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920
[ 61.944761][ T5192] #1: ffff8880760aac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_process_orphan+0x164/0x2d0
[ 61.955690][ T5192] #2: ffff8880760aaaa8 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x9f4/0xea0
[ 61.965320][ T5192] #3: ffffffff8d46e5c8 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x5/0x30
[ 61.974335][ T5192]
[ 61.974335][ T5192] stack backtrace:
[ 61.980197][ T5192] CPU: 0 PID: 5192 Comm: syz-executor679 Not tainted 6.1.0-syzkaller-13139-gf9ff5644bcc0 #0
[ 61.990231][ T5192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 62.000261][ T5192] Call Trace:
[ 62.003521][ T5192]
[ 62.006433][ T5192] dump_stack_lvl+0x1b1/0x290
[ 62.011094][ T5192] ? nf_tcp_handle_invalid+0x630/0x630
[ 62.016533][ T5192] ? print_circular_bug+0x13e/0x1c0
[ 62.021713][ T5192] check_noncircular+0x2cc/0x390
[ 62.026630][ T5192] ? add_chain_block+0x850/0x850
[ 62.031546][ T5192] ? lockdep_lock+0x102/0x290
[ 62.036201][ T5192] ? _find_first_zero_bit+0xe8/0x110
[ 62.041465][ T5192] validate_chain+0x1898/0x6ae0
[ 62.046298][ T5192] ? check_noncircular+0x1aa/0x390
[ 62.051388][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.056738][ T5192] ? add_chain_block+0x850/0x850
[ 62.061676][ T5192] ? lockdep_lock+0x102/0x290
[ 62.066350][ T5192] ? lockdep_unlock+0x144/0x2e0
[ 62.071192][ T5192] ? lockdep_lock+0x290/0x290
[ 62.075860][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.081213][ T5192] ? _find_first_zero_bit+0xe8/0x110
[ 62.086478][ T5192] ? validate_chain+0x177/0x6ae0
[ 62.091402][ T5192] ? hlock_conflict+0x54/0x1f0
[ 62.096147][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.101498][ T5192] ? __bfs+0x369/0x700
[ 62.105564][ T5192] ? check_path+0x40/0x40
[ 62.109890][ T5192] ? rcu_lock_release+0x5/0x20
[ 62.114647][ T5192] ? trace_lock_release+0x95/0x220
[ 62.119746][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.125104][ T5192] ? check_noncircular+0x1aa/0x390
[ 62.130199][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.135555][ T5192] ? lockdep_lock+0x102/0x290
[ 62.140216][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.145568][ T5192] ? lockdep_unlock+0x144/0x2e0
[ 62.150405][ T5192] ? _find_first_zero_bit+0xe8/0x110
[ 62.155682][ T5192] ? validate_chain+0x1478/0x6ae0
[ 62.160687][ T5192] ? reacquire_held_locks+0x650/0x650
[ 62.166044][ T5192] ? validate_chain+0x1478/0x6ae0
[ 62.171047][ T5192] ? check_noncircular+0x1aa/0x390
[ 62.176138][ T5192] ? add_chain_block+0x850/0x850
[ 62.181067][ T5192] ? lockdep_lock+0x102/0x290
[ 62.185729][ T5192] ? stack_trace_save+0x1e0/0x1e0
[ 62.190739][ T5192] ? rcu_read_lock_sched_held+0x87/0x110
[ 62.196354][ T5192] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 62.202322][ T5192] ? rcu_read_lock_sched_held+0x87/0x110
[ 62.207949][ T5192] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 62.213919][ T5192] ? finish_lock_switch+0x89/0x100
[ 62.219014][ T5192] ? trace_lock_release+0x95/0x220
[ 62.224111][ T5192] ? mark_lock+0x9a/0x350
[ 62.228427][ T5192] ? rcu_read_lock_sched_held+0x87/0x110
[ 62.234039][ T5192] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 62.239999][ T5192] ? mark_lock+0x9a/0x350
[ 62.244311][ T5192] ? __lock_acquire+0x1292/0x1f60
[ 62.249315][ T5192] ? rcu_preempt_deferred_qs_irqrestore+0x849/0xc10
[ 62.255895][ T5192] ? trace_lock_release+0x95/0x220
[ 62.260995][ T5192] ? mark_lock+0x9a/0x350
[ 62.265307][ T5192] ? lockdep_hardirqs_on_prepare+0x428/0x790
[ 62.271274][ T5192] ? mark_lock+0x9a/0x350
[ 62.275587][ T5192] ? mark_lock+0x9a/0x350
[ 62.279902][ T5192] ? rcu_read_lock_sched_held+0x87/0x110
[ 62.285516][ T5192] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 62.291487][ T5192] ? mark_lock+0x9a/0x350
[ 62.295802][ T5192] ? lockdep_hardirqs_on_prepare+0x428/0x790
[ 62.301772][ T5192] ? print_irqtrace_events+0x220/0x220
[ 62.307222][ T5192] ? __free_object+0x1fb/0xa60
[ 62.311974][ T5192] ? lockdep_hardirqs_on+0x8d/0x130
[ 62.317173][ T5192] ? mark_lock+0x9a/0x350
[ 62.321490][ T5192] ? mark_lock+0x9a/0x350
[ 62.325811][ T5192] ? mark_lock+0x9a/0x350
[ 62.330127][ T5192] __lock_acquire+0x1292/0x1f60
[ 62.334968][ T5192] lock_acquire+0x182/0x3c0
[ 62.339456][ T5192] ? dquot_commit+0x58/0x4e0
[ 62.344032][ T5192] ? read_lock_is_recursive+0x10/0x10
[ 62.349397][ T5192] ? print_irqtrace_events+0x220/0x220
[ 62.354847][ T5192] ? __might_sleep+0xc0/0xc0
[ 62.359427][ T5192] ? do_raw_spin_unlock+0x134/0x8a0
[ 62.364611][ T5192] ? _raw_spin_unlock_irqrestore+0x8b/0x120
[ 62.370490][ T5192] __mutex_lock_common+0x1bd/0x26e0
[ 62.375667][ T5192] ? dquot_commit+0x58/0x4e0
[ 62.380258][ T5192] ? dquot_commit+0x58/0x4e0
[ 62.384836][ T5192] ? __might_sleep+0xc0/0xc0
[ 62.389426][ T5192] ? mutex_lock_io_nested+0x60/0x60
[ 62.394610][ T5192] ? rcu_read_lock_sched_held+0x87/0x110
[ 62.400226][ T5192] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 62.406187][ T5192] ? read_lock_is_recursive+0x10/0x10
[ 62.411544][ T5192] mutex_lock_nested+0x17/0x20
[ 62.416288][ T5192] dquot_commit+0x58/0x4e0
[ 62.420687][ T5192] ? __ext4_journal_start_sb+0x19b/0x1f0
[ 62.426304][ T5192] ext4_write_dquot+0x1ea/0x2b0
[ 62.431137][ T5192] __dquot_free_space+0x9b8/0xfd0
[ 62.436152][ T5192] ? dquot_reclaim_space_nodirty+0x800/0x800
[ 62.442112][ T5192] ? ext4_block_bitmap_csum_set+0x1c3/0x4f0
[ 62.447992][ T5192] ? lock_downgrade+0x2c0/0x8d0
[ 62.452844][ T5192] ext4_free_blocks+0x1c4a/0x2810
[ 62.457867][ T5192] ? __lock_acquire+0x1f60/0x1f60
[ 62.462883][ T5192] ? trace_ext4_allocate_blocks+0x2f0/0x2f0
[ 62.468775][ T5192] ? rcu_read_lock_sched_held+0x87/0x110
[ 62.474396][ T5192] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 62.480361][ T5192] ? __ext4_journal_ensure_credits+0x2c/0x460
[ 62.486420][ T5192] ? ext4_inode_journal_mode+0x185/0x460
[ 62.492038][ T5192] ? trace_ext4_remove_blocks+0x10b/0x330
[ 62.497738][ T5192] ext4_ext_remove_space+0x1f5f/0x46a0
[ 62.503188][ T5192] ? ext4_da_release_space+0x1de/0x370
[ 62.508631][ T5192] ? ext4_ext_index_trans_blocks+0x120/0x120
[ 62.514587][ T5192] ? ext4_es_remove_extent+0x1ab/0x260
[ 62.520025][ T5192] ? trace_ext4_es_lookup_extent_exit+0x300/0x300
[ 62.526416][ T5192] ? down_write+0x1a5/0x270
[ 62.530900][ T5192] ? trace_ext4_fc_stats+0x2f0/0x2f0
[ 62.536170][ T5192] ? down_read_killable+0x80/0x80
[ 62.541182][ T5192] ext4_ext_truncate+0x177/0x220
[ 62.546100][ T5192] ext4_truncate+0xa6a/0xea0
[ 62.550672][ T5192] ? __ext4_mark_inode_dirty+0x670/0x670
[ 62.556287][ T5192] ext4_process_orphan+0x1aa/0x2d0
[ 62.561378][ T5192] ext4_orphan_cleanup+0xb60/0x1340
[ 62.566554][ T5192] ? ext4_orphan_del+0xc20/0xc20
[ 62.571493][ T5192] ? __init_swait_queue_head+0xa6/0x140
[ 62.577019][ T5192] ? errseq_check_and_advance+0x5e/0x110
[ 62.582633][ T5192] ext4_fill_super+0x81cd/0x8700
[ 62.587557][ T5192] ? ext4_parse_test_dummy_encryption+0xb0/0xb0
[ 62.593779][ T5192] ? snprintf+0xc0/0x110
[ 62.598006][ T5192] ? set_blocksize+0x1ec/0x390
[ 62.602748][ T5192] ? sb_set_blocksize+0x95/0xf0
[ 62.607578][ T5192] get_tree_bdev+0x400/0x620
[ 62.612152][ T5192] ? ext4_parse_test_dummy_encryption+0xb0/0xb0
[ 62.618375][ T5192] vfs_get_tree+0x88/0x270
[ 62.622771][ T5192] do_new_mount+0x289/0xad0
[ 62.627253][ T5192] ? do_move_mount_old+0x150/0x150
[ 62.632341][ T5192] ? user_path_at_empty+0x149/0x1a0
[ 62.637522][ T5192] __se_sys_mount+0x2d3/0x3c0
[ 62.642181][ T5192] ? __x64_sys_mount+0xc0/0xc0
[ 62.646924][ T5192] ? syscall_enter_from_user_mode+0x2e/0x1d0
[ 62.652887][ T5192] ? __x64_sys_mount+0x1c/0xc0
[ 62.657627][ T5192] do_syscall_64+0x3d/0xb0
[ 62.662024][ T5192] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 62.667908][ T5192] RIP: 0033:0x7f2781d02e4a
[ 62.672303][ T5192] 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
[ 62.691887][ T5192] RSP: 002b:00007fff8d85c668 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 62.700282][ T5192] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f2781d02e4a
[ 62.708234][ T5192] RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007fff8d85c670
[ 62.716183][ T5192] RBP: 00007fff8d85c670 R08: 00007fff8d85c6b0 R09: 00000000000004a6
[ 62.724133][ T5192] R10: 0000000000000047 R11: 0000000000000202 R12: 0000000000000004
[ 62.732083][ T5192] R13: 00005555564b82c0 R14: 00007fff8d85c6b0 R15: 0000000000000000
[ 62.740036][ T5192]
[pid 5192] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./60/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./60") = 0
mkdir("./61", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5194
./strace-static-x86_64: Process 5194 attached
[pid 5194] chdir("./61") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.744053][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./61/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5196 attached
, child_tidptr=0x5555564b85d0) = 5196
[pid 5196] chdir("./62") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.803024][ T5194] loop0: detected capacity change from 0 to 512
[ 62.811446][ T5194] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 62.821563][ T5194] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.829813][ T5194] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./62/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./62") = 0
mkdir("./63", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5198 attached
, child_tidptr=0x5555564b85d0) = 5198
[pid 5198] chdir("./63") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.869014][ T5196] loop0: detected capacity change from 0 to 512
[ 62.877148][ T5196] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 62.887042][ T5196] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.896325][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./63/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5200
./strace-static-x86_64: Process 5200 attached
[pid 5200] chdir("./64") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.932043][ T5198] loop0: detected capacity change from 0 to 512
[ 62.940079][ T5198] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 62.949901][ T5198] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 62.958850][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./64/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5202
./strace-static-x86_64: Process 5202 attached
[pid 5202] chdir("./65") = 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
[ 62.997240][ T5200] loop0: detected capacity change from 0 to 512
[ 63.005251][ T5200] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.014980][ T5200] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.023781][ T5200] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5202] memfd_create("syzkaller", 0) = 3
[pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./65/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./65") = 0
mkdir("./66", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5204
./strace-static-x86_64: Process 5204 attached
[pid 5204] chdir("./66") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.083338][ T5202] loop0: detected capacity change from 0 to 512
[ 63.092097][ T5202] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.101931][ T5202] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.110061][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./66/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5206
./strace-static-x86_64: Process 5206 attached
[pid 5206] chdir("./67") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.157772][ T5204] loop0: detected capacity change from 0 to 512
[ 63.165859][ T5204] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.176164][ T5204] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.184584][ T5204] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./67/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5208 attached
, child_tidptr=0x5555564b85d0) = 5208
[pid 5208] chdir("./68") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.219315][ T5206] loop0: detected capacity change from 0 to 512
[ 63.227787][ T5206] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.237570][ T5206] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.246061][ T5206] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 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, 0x5555564b9620 /* 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
[ 63.297291][ T5208] loop0: detected capacity change from 0 to 512
[ 63.298540][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 63.313846][ T5208] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.323420][ T5208] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.332052][ T5208] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./68/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5210
./strace-static-x86_64: Process 5210 attached
[pid 5210] chdir("./69") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 4 entries */, 32768) = 112
[ 63.389428][ T5210] loop0: detected capacity change from 0 to 512
[ 63.393075][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 63.406662][ T5210] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.416481][ T5210] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.425675][ T5210] EXT4-fs (loop0): 1 truncate cleaned up
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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./69/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5212
./strace-static-x86_64: Process 5212 attached
[pid 5212] chdir("./70") = 0
[pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5212] setpgid(0, 0) = 0
[pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5212] write(3, "1000", 4) = 4
[pid 5212] close(3) = 0
[pid 5212] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5212] memfd_create("syzkaller", 0) = 3
[pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./70/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5214
./strace-static-x86_64: Process 5214 attached
[pid 5214] chdir("./71") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.492986][ T5212] loop0: detected capacity change from 0 to 512
[ 63.501566][ T5212] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.511906][ T5212] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.521088][ T5212] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./71/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5216
./strace-static-x86_64: Process 5216 attached
[pid 5216] chdir("./72") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.572710][ T5214] loop0: detected capacity change from 0 to 512
[ 63.581095][ T5214] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.590970][ T5214] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.599288][ T5214] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./72/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./72") = 0
mkdir("./73", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5218
./strace-static-x86_64: Process 5218 attached
[pid 5218] chdir("./73") = 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) = 0x7f27798b4000
[ 63.640449][ T5216] loop0: detected capacity change from 0 to 512
[ 63.651373][ T5216] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.662030][ T5216] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.671484][ T5216] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 262144) = 0
[pid 5218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./73/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5220
./strace-static-x86_64: Process 5220 attached
[pid 5220] chdir("./74") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.707142][ T5218] loop0: detected capacity change from 0 to 512
[ 63.715231][ T5218] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.725291][ T5218] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.733779][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./74/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./74") = 0
mkdir("./75", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5222
./strace-static-x86_64: Process 5222 attached
[pid 5222] chdir("./75") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.782600][ T5220] loop0: detected capacity change from 0 to 512
[ 63.791641][ T5220] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.801320][ T5220] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.809984][ T5220] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./75/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5224
./strace-static-x86_64: Process 5224 attached
[pid 5224] chdir("./76") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.856286][ T5222] loop0: detected capacity change from 0 to 512
[ 63.865603][ T5222] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.875574][ T5222] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.883928][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./76/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5226
./strace-static-x86_64: Process 5226 attached
[pid 5226] chdir("./77") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.910797][ T5224] loop0: detected capacity change from 0 to 512
[ 63.911802][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 63.927281][ T5224] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.936946][ T5224] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 63.945598][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
[ 63.981562][ T5226] loop0: detected capacity change from 0 to 512
[ 63.989710][ T5226] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 63.999342][ T5226] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.007512][ T5226] EXT4-fs (loop0): 1 truncate cleaned up
rmdir("./77/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./77") = 0
mkdir("./78", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5228
./strace-static-x86_64: Process 5228 attached
[pid 5228] chdir("./78") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./78/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5230
./strace-static-x86_64: Process 5230 attached
[pid 5230] chdir("./79") = 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) = 0x7f27798b4000
[ 64.079135][ T5228] loop0: detected capacity change from 0 to 512
[ 64.087304][ T5228] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.097353][ T5228] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.106010][ T5228] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 262144) = 0
[pid 5230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=1 /* 0.01 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./79/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5232
./strace-static-x86_64: Process 5232 attached
[pid 5232] chdir("./80") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.163473][ T5230] loop0: detected capacity change from 0 to 512
[ 64.172809][ T5230] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.182407][ T5230] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.191726][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./80/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5234
./strace-static-x86_64: Process 5234 attached
[pid 5234] chdir("./81") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.243509][ T5232] loop0: detected capacity change from 0 to 512
[ 64.252105][ T5232] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.261689][ T5232] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.271678][ T5232] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(3, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./81/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5236
./strace-static-x86_64: Process 5236 attached
[pid 5236] chdir("./82") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.312976][ T5234] loop0: detected capacity change from 0 to 512
[ 64.321634][ T5234] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.331871][ T5234] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.341283][ T5234] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./82/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5238 attached
, child_tidptr=0x5555564b85d0) = 5238
[pid 5238] chdir("./83") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.385427][ T5236] loop0: detected capacity change from 0 to 512
[ 64.393806][ T5236] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.403565][ T5236] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.412438][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./83/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./83") = 0
mkdir("./84", 0777) = 0
[ 64.448664][ T5238] loop0: detected capacity change from 0 to 512
[ 64.450050][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 64.465562][ T5238] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.475344][ T5238] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.484010][ T5238] EXT4-fs (loop0): 1 truncate cleaned up
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_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=0x5555564b85d0) = 5240
./strace-static-x86_64: Process 5240 attached
[pid 5240] chdir("./84") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./84/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5242
./strace-static-x86_64: Process 5242 attached
[pid 5242] chdir("./85") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.537861][ T5240] loop0: detected capacity change from 0 to 512
[ 64.545917][ T5240] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.555758][ T5240] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.564444][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./85/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5244
./strace-static-x86_64: Process 5244 attached
[pid 5244] chdir("./86") = 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
[ 64.599311][ T5242] loop0: detected capacity change from 0 to 512
[ 64.608165][ T5242] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.618056][ T5242] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.626632][ T5242] EXT4-fs (loop0): 1 truncate cleaned up
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./86/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5246
./strace-static-x86_64: Process 5246 attached
[pid 5246] chdir("./87") = 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
[pid 5246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[ 64.682874][ T5244] loop0: detected capacity change from 0 to 512
[ 64.688638][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 64.699243][ T5244] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.708773][ T5244] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.718144][ T5244] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./87/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5248
./strace-static-x86_64: Process 5248 attached
[pid 5248] chdir("./88") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.765375][ T5246] loop0: detected capacity change from 0 to 512
[ 64.775021][ T5246] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.785556][ T5246] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.793877][ T5246] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./88/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5250
./strace-static-x86_64: Process 5250 attached
[pid 5250] chdir("./89") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.844811][ T5248] loop0: detected capacity change from 0 to 512
[ 64.850128][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 64.862680][ T5248] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.872957][ T5248] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.882136][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./89/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5252
./strace-static-x86_64: Process 5252 attached
[pid 5252] chdir("./90") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.925456][ T5250] loop0: detected capacity change from 0 to 512
[ 64.934086][ T5250] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 64.944284][ T5250] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 64.952621][ T5250] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./90/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5254
./strace-static-x86_64: Process 5254 attached
[pid 5254] chdir("./91") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.997067][ T5252] loop0: detected capacity change from 0 to 512
[ 65.005700][ T5252] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.015616][ T5252] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.024036][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./91/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5256
./strace-static-x86_64: Process 5256 attached
[pid 5256] chdir("./92") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.062322][ T5254] loop0: detected capacity change from 0 to 512
[ 65.071278][ T5254] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.081908][ T5254] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.090943][ T5254] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./92/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5258 attached
, child_tidptr=0x5555564b85d0) = 5258
[pid 5258] chdir("./93") = 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) = 0x7f27798b4000
[ 65.127956][ T5256] loop0: detected capacity change from 0 to 512
[ 65.136300][ T5256] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.146638][ T5256] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.155801][ T5256] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 262144) = 0
[pid 5258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./93/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5260
./strace-static-x86_64: Process 5260 attached
[pid 5260] chdir("./94") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.212645][ T5258] loop0: detected capacity change from 0 to 512
[ 65.220987][ T5258] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.231143][ T5258] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.239310][ T5258] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=1 /* 0.01 s */, si_stime=1 /* 0.01 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./94/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5262
./strace-static-x86_64: Process 5262 attached
[pid 5262] chdir("./95") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.283041][ T5260] loop0: detected capacity change from 0 to 512
[ 65.291430][ T5260] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.301768][ T5260] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.310805][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./95/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5264
./strace-static-x86_64: Process 5264 attached
[pid 5264] chdir("./96") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5264] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.350180][ T5262] loop0: detected capacity change from 0 to 512
[ 65.358453][ T5262] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.368510][ T5262] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.377003][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./96/file0") = 0
getdents64(3, 0x5555564b9620 /* 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)
[ 65.428681][ T5264] loop0: detected capacity change from 0 to 512
[ 65.436931][ T5264] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.446744][ T5264] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.455463][ T5264] EXT4-fs (loop0): 1 truncate cleaned up
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5266
./strace-static-x86_64: Process 5266 attached
[pid 5266] chdir("./97") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./97/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5268 attached
, child_tidptr=0x5555564b85d0) = 5268
[pid 5268] chdir("./98") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.515403][ T5266] loop0: detected capacity change from 0 to 512
[ 65.524005][ T5266] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.534222][ T5266] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.542718][ T5266] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./98/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5270
./strace-static-x86_64: Process 5270 attached
[pid 5270] chdir("./99") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.582664][ T5268] loop0: detected capacity change from 0 to 512
[ 65.591574][ T5268] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.601915][ T5268] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.610345][ T5268] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./99/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5272
./strace-static-x86_64: Process 5272 attached
[pid 5272] chdir("./100") = 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) = 0x7f27798b4000
[ 65.644669][ T5270] loop0: detected capacity change from 0 to 512
[ 65.648936][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 65.661520][ T5270] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.671788][ T5270] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.680900][ T5270] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 262144) = 0
[pid 5272] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./100/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5274
./strace-static-x86_64: Process 5274 attached
[pid 5274] chdir("./101") = 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) = 0x7f27798b4000
[ 65.728846][ T5272] loop0: detected capacity change from 0 to 512
[ 65.737119][ T5272] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.747170][ T5272] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.755996][ T5272] EXT4-fs (loop0): 1 truncate cleaned up
[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(0x7f27798b4000, 262144) = 0
[pid 5274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./101/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5276
./strace-static-x86_64: Process 5276 attached
[pid 5276] chdir("./102") = 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
[pid 5276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5276] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.811193][ T5274] loop0: detected capacity change from 0 to 512
[ 65.819604][ T5274] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.829139][ T5274] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.837458][ T5274] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./102/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5278
./strace-static-x86_64: Process 5278 attached
[pid 5278] chdir("./103") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5278] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.880602][ T5276] loop0: detected capacity change from 0 to 512
[ 65.888951][ T5276] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.898887][ T5276] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.907358][ T5276] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./103/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5280
./strace-static-x86_64: Process 5280 attached
[pid 5280] chdir("./104") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 65.945233][ T5278] loop0: detected capacity change from 0 to 512
[ 65.953516][ T5278] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 65.963415][ T5278] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 65.972471][ T5278] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=4 /* 0.04 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./104/file0") = 0
[ 66.008666][ T5280] loop0: detected capacity change from 0 to 512
[ 66.012179][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 66.027188][ T5280] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.036898][ T5280] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.045498][ T5280] EXT4-fs (loop0): 1 truncate cleaned up
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5282
./strace-static-x86_64: Process 5282 attached
[pid 5282] chdir("./105") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./105/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5284
./strace-static-x86_64: Process 5284 attached
[pid 5284] chdir("./106") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5284] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.105673][ T5282] loop0: detected capacity change from 0 to 512
[ 66.115085][ T5282] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.125008][ T5282] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.133384][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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)
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./106/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5286
./strace-static-x86_64: Process 5286 attached
[pid 5286] chdir("./107") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.175232][ T5284] loop0: detected capacity change from 0 to 512
[ 66.183470][ T5284] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.193505][ T5284] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.201942][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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
[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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./107/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5288
./strace-static-x86_64: Process 5288 attached
[pid 5288] chdir("./108") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.233112][ T5286] loop0: detected capacity change from 0 to 512
[ 66.241750][ T5286] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.251580][ T5286] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.259981][ T5286] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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("./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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./108/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5290
./strace-static-x86_64: Process 5290 attached
[pid 5290] chdir("./109") = 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) = 0x7f27798b4000
[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
[pid 5290] munmap(0x7f27798b4000, 262144) = 0
[pid 5290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.294293][ T5288] loop0: detected capacity change from 0 to 512
[ 66.303811][ T5288] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.313616][ T5288] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.322238][ T5288] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./109/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5292
./strace-static-x86_64: Process 5292 attached
[pid 5292] chdir("./110") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5292] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.375149][ T5290] loop0: detected capacity change from 0 to 512
[ 66.385171][ T5290] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.395085][ T5290] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.403367][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./110/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5294
./strace-static-x86_64: Process 5294 attached
[pid 5294] chdir("./111") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.437568][ T5292] loop0: detected capacity change from 0 to 512
[ 66.446186][ T5292] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.455732][ T5292] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.464236][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./111/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5296
./strace-static-x86_64: Process 5296 attached
[pid 5296] chdir("./112") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[ 66.513487][ T5294] loop0: detected capacity change from 0 to 512
[ 66.522098][ T5294] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.531856][ T5294] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.539988][ T5294] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./112/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5298
./strace-static-x86_64: Process 5298 attached
[pid 5298] chdir("./113") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.573162][ T5296] loop0: detected capacity change from 0 to 512
[ 66.582605][ T5296] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.592360][ T5296] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.602101][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./113/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5300
./strace-static-x86_64: Process 5300 attached
[pid 5300] chdir("./114") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5300] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.640013][ T5298] loop0: detected capacity change from 0 to 512
[ 66.648353][ T5298] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.658524][ T5298] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.667531][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./114/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5302
./strace-static-x86_64: Process 5302 attached
[pid 5302] chdir("./115") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.708526][ T5300] loop0: detected capacity change from 0 to 512
[ 66.716584][ T5300] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.727310][ T5300] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.735580][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./115/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5304
./strace-static-x86_64: Process 5304 attached
[pid 5304] chdir("./116") = 0
[ 66.780989][ T5302] loop0: detected capacity change from 0 to 512
[ 66.785753][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 66.798076][ T5302] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.807935][ T5302] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.816320][ T5302] EXT4-fs (loop0): 1 truncate cleaned up
[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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./116/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5306
./strace-static-x86_64: Process 5306 attached
[pid 5306] chdir("./117") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.873173][ T5304] loop0: detected capacity change from 0 to 512
[ 66.882170][ T5304] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.892089][ T5304] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.900449][ 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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./117/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5308 attached
, child_tidptr=0x5555564b85d0) = 5308
[pid 5308] chdir("./118") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.942876][ T5306] loop0: detected capacity change from 0 to 512
[ 66.951655][ T5306] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 66.961840][ T5306] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 66.970590][ T5306] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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 */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./118/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5310
./strace-static-x86_64: Process 5310 attached
[pid 5310] chdir("./119") = 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) = 0x7f27798b4000
[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
[ 67.010543][ T5308] loop0: detected capacity change from 0 to 512
[ 67.019024][ T5308] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.029033][ T5308] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.037485][ T5308] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5310] munmap(0x7f27798b4000, 262144) = 0
[pid 5310] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./119/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./119") = 0
mkdir("./120", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 67.090101][ T5310] loop0: detected capacity change from 0 to 512
[ 67.098779][ T5310] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.108866][ T5310] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.118062][ T5310] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_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=0x5555564b85d0) = 5312
./strace-static-x86_64: Process 5312 attached
[pid 5312] chdir("./120") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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
[ 67.185072][ T5312] loop0: detected capacity change from 0 to 512
[ 67.198307][ T5312] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.208364][ T5312] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.216562][ T5312] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./120/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./120") = 0
mkdir("./121", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_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=0x5555564b85d0) = 5314
./strace-static-x86_64: Process 5314 attached
[pid 5314] chdir("./121") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./121/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5316
./strace-static-x86_64: Process 5316 attached
[pid 5316] chdir("./122") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 67.286504][ T5314] loop0: detected capacity change from 0 to 512
[ 67.295275][ T5314] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.304849][ T5314] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.313121][ T5314] EXT4-fs (loop0): 1 truncate cleaned up
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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
[ 67.356501][ T5316] loop0: detected capacity change from 0 to 512
[ 67.365139][ T5316] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.375238][ T5316] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.384172][ T5316] EXT4-fs (loop0): 1 truncate cleaned up
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./122/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5318
./strace-static-x86_64: Process 5318 attached
[pid 5318] chdir("./123") = 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) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[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, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 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=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./123/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5320
./strace-static-x86_64: Process 5320 attached
[pid 5320] chdir("./124") = 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
[pid 5320] memfd_create("syzkaller", 0) = 3
[pid 5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[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(0x7f27798b4000, 262144) = 0
[pid 5320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 67.456458][ T5318] loop0: detected capacity change from 0 to 512
[ 67.464986][ T5318] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.474815][ T5318] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.483359][ T5318] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5320] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5320] close(3) = 0
[pid 5320] mkdir("./file0", 0777) = 0
[pid 5320] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5320] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5320] chdir("./file0") = 0
[pid 5320] ioctl(4, LOOP_CLR_FD) = 0
[pid 5320] close(4) = 0
[ 67.511711][ T5320] loop0: detected capacity change from 0 to 512
[ 67.513595][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 67.528642][ T5320] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.538186][ T5320] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.546710][ T5320] EXT4-fs (loop0): 1 truncate cleaned up
[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=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./124/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5322
./strace-static-x86_64: Process 5322 attached
[pid 5322] chdir("./125") = 0
[pid 5322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5322] setpgid(0, 0) = 0
[pid 5322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5322] write(3, "1000", 4) = 4
[pid 5322] close(3) = 0
[pid 5322] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5322] memfd_create("syzkaller", 0) = 3
[pid 5322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5322] 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 5322] munmap(0x7f27798b4000, 262144) = 0
[pid 5322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5322] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5322] close(3) = 0
[pid 5322] mkdir("./file0", 0777) = 0
[pid 5322] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5322] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5322] chdir("./file0") = 0
[pid 5322] ioctl(4, LOOP_CLR_FD) = 0
[pid 5322] close(4) = 0
[pid 5322] exit_group(0) = ?
[pid 5322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5322, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./125/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5324
./strace-static-x86_64: Process 5324 attached
[pid 5324] chdir("./126") = 0
[pid 5324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5324] setpgid(0, 0) = 0
[pid 5324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5324] write(3, "1000", 4) = 4
[pid 5324] close(3) = 0
[pid 5324] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5324] memfd_create("syzkaller", 0) = 3
[pid 5324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5324] 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 5324] munmap(0x7f27798b4000, 262144) = 0
[pid 5324] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 67.623752][ T5322] loop0: detected capacity change from 0 to 512
[ 67.632119][ T5322] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.642170][ T5322] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.651101][ T5322] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5324] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5324] close(3) = 0
[pid 5324] mkdir("./file0", 0777) = 0
[pid 5324] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5324] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5324] chdir("./file0") = 0
[pid 5324] ioctl(4, LOOP_CLR_FD) = 0
[pid 5324] close(4) = 0
[pid 5324] exit_group(0) = ?
[pid 5324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5324, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./126/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5326
./strace-static-x86_64: Process 5326 attached
[pid 5326] chdir("./127") = 0
[pid 5326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5326] setpgid(0, 0) = 0
[pid 5326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5326] write(3, "1000", 4) = 4
[pid 5326] close(3) = 0
[pid 5326] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5326] memfd_create("syzkaller", 0) = 3
[pid 5326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5326] 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 5326] munmap(0x7f27798b4000, 262144) = 0
[pid 5326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 67.689194][ T5324] loop0: detected capacity change from 0 to 512
[ 67.697320][ T5324] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.706952][ T5324] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.716047][ T5324] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5326] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5326] close(3) = 0
[pid 5326] mkdir("./file0", 0777) = 0
[pid 5326] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5326] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5326] chdir("./file0") = 0
[pid 5326] ioctl(4, LOOP_CLR_FD) = 0
[pid 5326] close(4) = 0
[pid 5326] exit_group(0) = ?
[pid 5326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5326, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 4 entries */, 32768) = 112
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
umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
lstat("./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./127/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5328
./strace-static-x86_64: Process 5328 attached
[pid 5328] chdir("./128") = 0
[pid 5328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5328] setpgid(0, 0) = 0
[pid 5328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5328] write(3, "1000", 4) = 4
[pid 5328] close(3) = 0
[ 67.758970][ T5326] loop0: detected capacity change from 0 to 512
[ 67.766969][ T5326] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.776730][ T5326] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.785147][ T5326] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5328] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5328] memfd_create("syzkaller", 0) = 3
[pid 5328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5328] 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 5328] munmap(0x7f27798b4000, 262144) = 0
[pid 5328] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5328] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5328] close(3) = 0
[pid 5328] mkdir("./file0", 0777) = 0
[pid 5328] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5328] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5328] chdir("./file0") = 0
[pid 5328] ioctl(4, LOOP_CLR_FD) = 0
[pid 5328] close(4) = 0
[pid 5328] exit_group(0) = ?
[pid 5328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5328, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./128/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5330 attached
, child_tidptr=0x5555564b85d0) = 5330
[pid 5330] chdir("./129") = 0
[pid 5330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5330] setpgid(0, 0) = 0
[pid 5330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5330] write(3, "1000", 4) = 4
[pid 5330] close(3) = 0
[pid 5330] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5330] memfd_create("syzkaller", 0) = 3
[pid 5330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5330] 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 5330] munmap(0x7f27798b4000, 262144) = 0
[pid 5330] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 67.815898][ T5328] loop0: detected capacity change from 0 to 512
[ 67.818094][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 67.832467][ T5328] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.843266][ T5328] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.851851][ T5328] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5330] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5330] close(3) = 0
[pid 5330] mkdir("./file0", 0777) = 0
[pid 5330] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5330] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5330] chdir("./file0") = 0
[pid 5330] ioctl(4, LOOP_CLR_FD) = 0
[pid 5330] close(4) = 0
[pid 5330] exit_group(0) = ?
[pid 5330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5330, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./129/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5332
./strace-static-x86_64: Process 5332 attached
[pid 5332] chdir("./130") = 0
[pid 5332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5332] setpgid(0, 0) = 0
[ 67.892297][ T5330] loop0: detected capacity change from 0 to 512
[ 67.893711][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 67.909449][ T5330] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.919085][ T5330] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 67.927391][ T5330] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5332] write(3, "1000", 4) = 4
[pid 5332] close(3) = 0
[pid 5332] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5332] memfd_create("syzkaller", 0) = 3
[pid 5332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5332] 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 5332] munmap(0x7f27798b4000, 262144) = 0
[pid 5332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5332] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5332] close(3) = 0
[pid 5332] mkdir("./file0", 0777) = 0
[pid 5332] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5332] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5332] chdir("./file0") = 0
[pid 5332] ioctl(4, LOOP_CLR_FD) = 0
[pid 5332] close(4) = 0
[pid 5332] exit_group(0) = ?
[pid 5332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5332, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./130/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5334
./strace-static-x86_64: Process 5334 attached
[pid 5334] chdir("./131") = 0
[pid 5334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5334] setpgid(0, 0) = 0
[pid 5334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5334] write(3, "1000", 4) = 4
[pid 5334] close(3) = 0
[pid 5334] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5334] memfd_create("syzkaller", 0) = 3
[ 67.978387][ T5332] loop0: detected capacity change from 0 to 512
[ 67.986936][ T5332] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 67.997265][ T5332] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.005511][ T5332] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5334] 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 5334] munmap(0x7f27798b4000, 262144) = 0
[pid 5334] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5334] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5334] close(3) = 0
[pid 5334] mkdir("./file0", 0777) = 0
[pid 5334] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5334] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5334] chdir("./file0") = 0
[pid 5334] ioctl(4, LOOP_CLR_FD) = 0
[pid 5334] close(4) = 0
[pid 5334] exit_group(0) = ?
[pid 5334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5334, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./131/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5336
./strace-static-x86_64: Process 5336 attached
[pid 5336] chdir("./132") = 0
[pid 5336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5336] setpgid(0, 0) = 0
[pid 5336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5336] write(3, "1000", 4) = 4
[pid 5336] close(3) = 0
[pid 5336] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5336] memfd_create("syzkaller", 0) = 3
[pid 5336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5336] 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 5336] munmap(0x7f27798b4000, 262144) = 0
[pid 5336] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.063687][ T5334] loop0: detected capacity change from 0 to 512
[ 68.072339][ T5334] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.082425][ T5334] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.091359][ T5334] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5336] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5336] close(3) = 0
[pid 5336] mkdir("./file0", 0777) = 0
[pid 5336] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5336] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5336] chdir("./file0") = 0
[pid 5336] ioctl(4, LOOP_CLR_FD) = 0
[pid 5336] close(4) = 0
[pid 5336] exit_group(0) = ?
[pid 5336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5336, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./132/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5338 attached
[pid 5338] chdir("./133"
[pid 5068] <... clone resumed>, child_tidptr=0x5555564b85d0) = 5338
[pid 5338] <... chdir resumed>) = 0
[pid 5338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5338] setpgid(0, 0) = 0
[pid 5338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5338] write(3, "1000", 4) = 4
[pid 5338] close(3) = 0
[pid 5338] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5338] memfd_create("syzkaller", 0) = 3
[pid 5338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5338] 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 5338] munmap(0x7f27798b4000, 262144) = 0
[pid 5338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.129378][ T5336] loop0: detected capacity change from 0 to 512
[ 68.137745][ T5336] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.147444][ T5336] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.156394][ T5336] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5338] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5338] close(3) = 0
[pid 5338] mkdir("./file0", 0777) = 0
[pid 5338] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5338] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5338] chdir("./file0") = 0
[pid 5338] ioctl(4, LOOP_CLR_FD) = 0
[pid 5338] close(4) = 0
[pid 5338] exit_group(0) = ?
[pid 5338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5338, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./133/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5340
./strace-static-x86_64: Process 5340 attached
[pid 5340] chdir("./134") = 0
[pid 5340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5340] setpgid(0, 0) = 0
[pid 5340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5340] write(3, "1000", 4) = 4
[pid 5340] close(3) = 0
[pid 5340] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5340] memfd_create("syzkaller", 0) = 3
[pid 5340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5340] 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 5340] munmap(0x7f27798b4000, 262144) = 0
[pid 5340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.194606][ T5338] loop0: detected capacity change from 0 to 512
[ 68.213448][ T5338] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.223172][ T5338] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.232309][ T5338] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5340] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5340] close(3) = 0
[pid 5340] mkdir("./file0", 0777) = 0
[pid 5340] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5340] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5340] chdir("./file0") = 0
[pid 5340] ioctl(4, LOOP_CLR_FD) = 0
[pid 5340] close(4) = 0
[pid 5340] exit_group(0) = ?
[pid 5340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5340, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./134/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5342
./strace-static-x86_64: Process 5342 attached
[pid 5342] chdir("./135") = 0
[pid 5342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5342] setpgid(0, 0) = 0
[pid 5342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5342] write(3, "1000", 4) = 4
[pid 5342] close(3) = 0
[pid 5342] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5342] memfd_create("syzkaller", 0) = 3
[pid 5342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5342] 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 5342] munmap(0x7f27798b4000, 262144) = 0
[pid 5342] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.271898][ T5340] loop0: detected capacity change from 0 to 512
[ 68.280305][ T5340] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.290153][ T5340] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.298992][ T5340] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5342] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5342] close(3) = 0
[pid 5342] mkdir("./file0", 0777) = 0
[pid 5342] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5342] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5342] chdir("./file0") = 0
[pid 5342] ioctl(4, LOOP_CLR_FD) = 0
[pid 5342] close(4) = 0
[pid 5342] exit_group(0) = ?
[pid 5342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5342, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./135/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5344
./strace-static-x86_64: Process 5344 attached
[pid 5344] chdir("./136") = 0
[pid 5344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5344] setpgid(0, 0) = 0
[pid 5344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5344] write(3, "1000", 4) = 4
[pid 5344] close(3) = 0
[pid 5344] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5344] memfd_create("syzkaller", 0) = 3
[ 68.340167][ T5342] loop0: detected capacity change from 0 to 512
[ 68.348486][ T5342] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.358197][ T5342] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.367573][ T5342] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5344] 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 5344] munmap(0x7f27798b4000, 262144) = 0
[pid 5344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5344] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5344] close(3) = 0
[pid 5344] mkdir("./file0", 0777) = 0
[pid 5344] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5344] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5344] chdir("./file0") = 0
[pid 5344] ioctl(4, LOOP_CLR_FD) = 0
[pid 5344] close(4) = 0
[pid 5344] exit_group(0) = ?
[pid 5344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5344, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./136/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5346
./strace-static-x86_64: Process 5346 attached
[pid 5346] chdir("./137") = 0
[pid 5346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5346] setpgid(0, 0) = 0
[pid 5346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5346] write(3, "1000", 4) = 4
[pid 5346] close(3) = 0
[pid 5346] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5346] memfd_create("syzkaller", 0) = 3
[pid 5346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5346] 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 5346] munmap(0x7f27798b4000, 262144) = 0
[pid 5346] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.437124][ T5344] loop0: detected capacity change from 0 to 512
[ 68.445545][ T5344] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.455525][ T5344] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.463927][ T5344] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5346] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5346] close(3) = 0
[pid 5346] mkdir("./file0", 0777) = 0
[pid 5346] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5346] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5346] chdir("./file0") = 0
[pid 5346] ioctl(4, LOOP_CLR_FD) = 0
[pid 5346] close(4) = 0
[pid 5346] exit_group(0) = ?
[pid 5346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5346, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./137/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./137") = 0
mkdir("./138", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 68.498210][ T5346] loop0: detected capacity change from 0 to 512
[ 68.507477][ T5346] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.517345][ T5346] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.526804][ T5346] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_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=0x5555564b85d0) = 5348
./strace-static-x86_64: Process 5348 attached
[pid 5348] chdir("./138") = 0
[pid 5348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5348] setpgid(0, 0) = 0
[pid 5348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5348] write(3, "1000", 4) = 4
[pid 5348] close(3) = 0
[pid 5348] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5348] memfd_create("syzkaller", 0) = 3
[pid 5348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5348] 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 5348] munmap(0x7f27798b4000, 262144) = 0
[pid 5348] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5348] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5348] close(3) = 0
[pid 5348] mkdir("./file0", 0777) = 0
[pid 5348] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5348] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5348] chdir("./file0") = 0
[pid 5348] ioctl(4, LOOP_CLR_FD) = 0
[pid 5348] close(4) = 0
[pid 5348] exit_group(0) = ?
[pid 5348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5348, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./138/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -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 5350 attached
, child_tidptr=0x5555564b85d0) = 5350
[pid 5350] chdir("./139") = 0
[pid 5350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5350] setpgid(0, 0) = 0
[pid 5350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5350] write(3, "1000", 4) = 4
[pid 5350] close(3) = 0
[pid 5350] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5350] memfd_create("syzkaller", 0) = 3
[pid 5350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[ 68.590325][ T5348] loop0: detected capacity change from 0 to 512
[ 68.598688][ T5348] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.608695][ T5348] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.617438][ T5348] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5350] 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 5350] munmap(0x7f27798b4000, 262144) = 0
[pid 5350] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5350] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5350] close(3) = 0
[pid 5350] mkdir("./file0", 0777) = 0
[pid 5350] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5350] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5350] chdir("./file0") = 0
[pid 5350] ioctl(4, LOOP_CLR_FD) = 0
[pid 5350] close(4) = 0
[pid 5350] exit_group(0) = ?
[pid 5350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5350, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./139/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5352
./strace-static-x86_64: Process 5352 attached
[pid 5352] chdir("./140") = 0
[pid 5352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5352] setpgid(0, 0) = 0
[pid 5352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5352] write(3, "1000", 4) = 4
[pid 5352] close(3) = 0
[pid 5352] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5352] memfd_create("syzkaller", 0) = 3
[pid 5352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5352] 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 5352] munmap(0x7f27798b4000, 262144) = 0
[pid 5352] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.674088][ T5350] loop0: detected capacity change from 0 to 512
[ 68.682483][ T5350] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.692398][ T5350] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.701176][ T5350] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5352] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5352] close(3) = 0
[pid 5352] mkdir("./file0", 0777) = 0
[pid 5352] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5352] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5352] chdir("./file0") = 0
[pid 5352] ioctl(4, LOOP_CLR_FD) = 0
[pid 5352] close(4) = 0
[pid 5352] exit_group(0) = ?
[pid 5352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5352, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./140/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5354
./strace-static-x86_64: Process 5354 attached
[pid 5354] chdir("./141") = 0
[pid 5354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5354] setpgid(0, 0) = 0
[pid 5354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5354] write(3, "1000", 4) = 4
[pid 5354] close(3) = 0
[pid 5354] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5354] memfd_create("syzkaller", 0) = 3
[pid 5354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[ 68.734592][ T5352] loop0: detected capacity change from 0 to 512
[ 68.742774][ T5352] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.752482][ T5352] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.762217][ T5352] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5354] 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 5354] munmap(0x7f27798b4000, 262144) = 0
[pid 5354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5354] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5354] close(3) = 0
[pid 5354] mkdir("./file0", 0777) = 0
[pid 5354] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5354] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5354] chdir("./file0") = 0
[pid 5354] ioctl(4, LOOP_CLR_FD) = 0
[pid 5354] close(4) = 0
[pid 5354] exit_group(0) = ?
[pid 5354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5354, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./141/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5356
./strace-static-x86_64: Process 5356 attached
[pid 5356] chdir("./142") = 0
[pid 5356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5356] setpgid(0, 0) = 0
[pid 5356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5356] write(3, "1000", 4) = 4
[pid 5356] close(3) = 0
[pid 5356] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5356] memfd_create("syzkaller", 0) = 3
[pid 5356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5356] 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 5356] munmap(0x7f27798b4000, 262144) = 0
[pid 5356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.802510][ T5354] loop0: detected capacity change from 0 to 512
[ 68.810926][ T5354] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.820911][ T5354] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.829212][ T5354] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5356] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5356] close(3) = 0
[pid 5356] mkdir("./file0", 0777) = 0
[pid 5356] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5356] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5356] chdir("./file0") = 0
[pid 5356] ioctl(4, LOOP_CLR_FD) = 0
[pid 5356] close(4) = 0
[pid 5356] exit_group(0) = ?
[pid 5356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5356, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 4 entries */, 32768) = 112
umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./142/file0") = 0
getdents64(3, 0x5555564b9620 /* 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 5358 attached
, child_tidptr=0x5555564b85d0) = 5358
[pid 5358] chdir("./143") = 0
[pid 5358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5358] setpgid(0, 0) = 0
[pid 5358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5358] write(3, "1000", 4) = 4
[pid 5358] close(3) = 0
[pid 5358] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5358] memfd_create("syzkaller", 0) = 3
[pid 5358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5358] 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 5358] munmap(0x7f27798b4000, 262144) = 0
[pid 5358] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.861132][ T5356] loop0: detected capacity change from 0 to 512
[ 68.869322][ T5356] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.879053][ T5356] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.887726][ T5356] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5358] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5358] close(3) = 0
[pid 5358] mkdir("./file0", 0777) = 0
[pid 5358] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5358] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5358] chdir("./file0") = 0
[pid 5358] ioctl(4, LOOP_CLR_FD) = 0
[pid 5358] close(4) = 0
[pid 5358] exit_group(0) = ?
[pid 5358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5358, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./143/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5360
./strace-static-x86_64: Process 5360 attached
[pid 5360] chdir("./144") = 0
[pid 5360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5360] setpgid(0, 0) = 0
[pid 5360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5360] write(3, "1000", 4) = 4
[pid 5360] close(3) = 0
[pid 5360] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5360] memfd_create("syzkaller", 0) = 3
[pid 5360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5360] 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 5360] munmap(0x7f27798b4000, 262144) = 0
[pid 5360] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.923464][ T5358] loop0: detected capacity change from 0 to 512
[ 68.931766][ T5358] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 68.941678][ T5358] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 68.950334][ T5358] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5360] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5360] close(3) = 0
[pid 5360] mkdir("./file0", 0777) = 0
[pid 5360] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5360] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5360] chdir("./file0") = 0
[pid 5360] ioctl(4, LOOP_CLR_FD) = 0
[pid 5360] close(4) = 0
[pid 5360] exit_group(0) = ?
[pid 5360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5360, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./144/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5362
./strace-static-x86_64: Process 5362 attached
[pid 5362] chdir("./145") = 0
[pid 5362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5362] setpgid(0, 0) = 0
[pid 5362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5362] write(3, "1000", 4) = 4
[pid 5362] close(3) = 0
[pid 5362] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5362] memfd_create("syzkaller", 0) = 3
[pid 5362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5362] 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 5362] munmap(0x7f27798b4000, 262144) = 0
[pid 5362] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 68.986097][ T5360] loop0: detected capacity change from 0 to 512
[ 68.987075][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 69.006032][ T5360] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.015948][ T5360] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.024337][ T5360] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5362] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5362] close(3) = 0
[pid 5362] mkdir("./file0", 0777) = 0
[pid 5362] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5362] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5362] chdir("./file0") = 0
[pid 5362] ioctl(4, LOOP_CLR_FD) = 0
[pid 5362] close(4) = 0
[pid 5362] exit_group(0) = ?
[pid 5362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5362, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./145/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5364
./strace-static-x86_64: Process 5364 attached
[pid 5364] chdir("./146") = 0
[pid 5364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5364] setpgid(0, 0) = 0
[pid 5364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5364] write(3, "1000", 4) = 4
[pid 5364] close(3) = 0
[pid 5364] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5364] memfd_create("syzkaller", 0) = 3
[pid 5364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5364] 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 5364] munmap(0x7f27798b4000, 262144) = 0
[pid 5364] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.064410][ T5362] loop0: detected capacity change from 0 to 512
[ 69.073287][ T5362] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.082970][ T5362] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.091545][ T5362] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5364] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5364] close(3) = 0
[pid 5364] mkdir("./file0", 0777) = 0
[pid 5364] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5364] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5364] chdir("./file0") = 0
[pid 5364] ioctl(4, LOOP_CLR_FD) = 0
[pid 5364] close(4) = 0
[pid 5364] exit_group(0) = ?
[pid 5364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5364, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./146/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./146") = 0
mkdir("./147", 0777) = 0
[ 69.134856][ T5364] loop0: detected capacity change from 0 to 512
[ 69.144063][ T5364] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.153811][ T5364] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.162803][ T5364] EXT4-fs (loop0): 1 truncate cleaned up
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_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=0x5555564b85d0) = 5366
./strace-static-x86_64: Process 5366 attached
[pid 5366] chdir("./147") = 0
[pid 5366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5366] setpgid(0, 0) = 0
[pid 5366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5366] write(3, "1000", 4) = 4
[pid 5366] close(3) = 0
[pid 5366] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5366] memfd_create("syzkaller", 0) = 3
[pid 5366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5366] 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 5366] munmap(0x7f27798b4000, 262144) = 0
[pid 5366] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5366] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5366] close(3) = 0
[pid 5366] mkdir("./file0", 0777) = 0
[pid 5366] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5366] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5366] chdir("./file0") = 0
[pid 5366] ioctl(4, LOOP_CLR_FD) = 0
[pid 5366] close(4) = 0
[pid 5366] exit_group(0) = ?
[pid 5366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5366, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./147/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5368
./strace-static-x86_64: Process 5368 attached
[pid 5368] chdir("./148") = 0
[pid 5368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5368] setpgid(0, 0) = 0
[pid 5368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5368] write(3, "1000", 4) = 4
[pid 5368] close(3) = 0
[pid 5368] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5368] memfd_create("syzkaller", 0) = 3
[pid 5368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5368] 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 5368] munmap(0x7f27798b4000, 262144) = 0
[pid 5368] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.230199][ T5366] loop0: detected capacity change from 0 to 512
[ 69.238546][ T5366] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.248609][ T5366] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.257099][ T5366] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5368] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5368] close(3) = 0
[pid 5368] mkdir("./file0", 0777) = 0
[pid 5368] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5368] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5368] chdir("./file0") = 0
[pid 5368] ioctl(4, LOOP_CLR_FD) = 0
[pid 5368] close(4) = 0
[pid 5368] exit_group(0) = ?
[pid 5368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5368, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./148/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5370
./strace-static-x86_64: Process 5370 attached
[pid 5370] chdir("./149") = 0
[pid 5370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5370] setpgid(0, 0) = 0
[pid 5370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5370] write(3, "1000", 4) = 4
[pid 5370] close(3) = 0
[pid 5370] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5370] memfd_create("syzkaller", 0) = 3
[pid 5370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5370] 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 5370] munmap(0x7f27798b4000, 262144) = 0
[pid 5370] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.304574][ T5368] loop0: detected capacity change from 0 to 512
[ 69.312856][ T5368] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.322840][ T5368] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.331802][ T5368] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5370] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5370] close(3) = 0
[pid 5370] mkdir("./file0", 0777) = 0
[pid 5370] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5370] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5370] chdir("./file0") = 0
[pid 5370] ioctl(4, LOOP_CLR_FD) = 0
[pid 5370] close(4) = 0
[pid 5370] exit_group(0) = ?
[pid 5370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5370, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./149/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5372
./strace-static-x86_64: Process 5372 attached
[pid 5372] chdir("./150") = 0
[pid 5372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5372] setpgid(0, 0) = 0
[pid 5372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5372] write(3, "1000", 4) = 4
[pid 5372] close(3) = 0
[pid 5372] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5372] memfd_create("syzkaller", 0) = 3
[pid 5372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5372] 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 5372] munmap(0x7f27798b4000, 262144) = 0
[pid 5372] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.375439][ T5370] loop0: detected capacity change from 0 to 512
[ 69.384236][ T5370] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.394153][ T5370] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.402755][ T5370] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5372] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5372] close(3) = 0
[pid 5372] mkdir("./file0", 0777) = 0
[pid 5372] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5372] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5372] chdir("./file0") = 0
[pid 5372] ioctl(4, LOOP_CLR_FD) = 0
[pid 5372] close(4) = 0
[pid 5372] exit_group(0) = ?
[pid 5372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5372, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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
[ 69.439772][ T5372] loop0: detected capacity change from 0 to 512
[ 69.449113][ T5372] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.459189][ T5372] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.467368][ T5372] EXT4-fs (loop0): 1 truncate cleaned up
fstat(4, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
getdents64(4, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./150/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5374
./strace-static-x86_64: Process 5374 attached
[pid 5374] chdir("./151") = 0
[pid 5374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5374] setpgid(0, 0) = 0
[pid 5374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5374] write(3, "1000", 4) = 4
[pid 5374] close(3) = 0
[pid 5374] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5374] memfd_create("syzkaller", 0) = 3
[pid 5374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5374] 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 5374] munmap(0x7f27798b4000, 262144) = 0
[pid 5374] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5374] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5374] close(3) = 0
[pid 5374] mkdir("./file0", 0777) = 0
[pid 5374] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5374] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5374] chdir("./file0") = 0
[pid 5374] ioctl(4, LOOP_CLR_FD) = 0
[pid 5374] close(4) = 0
[pid 5374] exit_group(0) = ?
[pid 5374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5374, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./151/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
[ 69.530639][ T5374] loop0: detected capacity change from 0 to 512
[ 69.534911][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 69.547844][ T5374] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.557392][ T5374] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.565686][ T5374] EXT4-fs (loop0): 1 truncate cleaned up
close(3) = 0
rmdir("./151") = 0
mkdir("./152", 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=0x5555564b85d0) = 5376
./strace-static-x86_64: Process 5376 attached
[pid 5376] chdir("./152") = 0
[pid 5376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5376] setpgid(0, 0) = 0
[pid 5376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5376] write(3, "1000", 4) = 4
[pid 5376] close(3) = 0
[pid 5376] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5376] memfd_create("syzkaller", 0) = 3
[pid 5376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5376] 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 5376] munmap(0x7f27798b4000, 262144) = 0
[pid 5376] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5376] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5376] close(3) = 0
[pid 5376] mkdir("./file0", 0777) = 0
[pid 5376] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5376] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5376] chdir("./file0") = 0
[pid 5376] ioctl(4, LOOP_CLR_FD) = 0
[pid 5376] close(4) = 0
[pid 5376] exit_group(0) = ?
[pid 5376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5376, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./152/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5378
./strace-static-x86_64: Process 5378 attached
[pid 5378] chdir("./153") = 0
[pid 5378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5378] setpgid(0, 0) = 0
[pid 5378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5378] write(3, "1000", 4) = 4
[pid 5378] close(3) = 0
[pid 5378] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5378] memfd_create("syzkaller", 0) = 3
[pid 5378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5378] 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 5378] munmap(0x7f27798b4000, 262144) = 0
[pid 5378] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.625571][ T5376] loop0: detected capacity change from 0 to 512
[ 69.633944][ T5376] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.643540][ T5376] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.652406][ T5376] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5378] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5378] close(3) = 0
[pid 5378] mkdir("./file0", 0777) = 0
[pid 5378] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5378] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5378] chdir("./file0") = 0
[pid 5378] ioctl(4, LOOP_CLR_FD) = 0
[pid 5378] close(4) = 0
[pid 5378] exit_group(0) = ?
[pid 5378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5378, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./153/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5380
./strace-static-x86_64: Process 5380 attached
[pid 5380] chdir("./154") = 0
[pid 5380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5380] setpgid(0, 0) = 0
[pid 5380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5380] write(3, "1000", 4) = 4
[pid 5380] close(3) = 0
[pid 5380] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5380] memfd_create("syzkaller", 0) = 3
[pid 5380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[ 69.697949][ T5378] loop0: detected capacity change from 0 to 512
[ 69.706949][ T5378] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.717537][ T5378] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.725983][ T5378] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5380] 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 5380] munmap(0x7f27798b4000, 262144) = 0
[pid 5380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5380] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5380] close(3) = 0
[pid 5380] mkdir("./file0", 0777) = 0
[pid 5380] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5380] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5380] chdir("./file0") = 0
[pid 5380] ioctl(4, LOOP_CLR_FD) = 0
[pid 5380] close(4) = 0
[pid 5380] exit_group(0) = ?
[pid 5380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5380, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./154/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5382
./strace-static-x86_64: Process 5382 attached
[pid 5382] chdir("./155") = 0
[pid 5382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5382] setpgid(0, 0) = 0
[pid 5382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5382] write(3, "1000", 4) = 4
[pid 5382] close(3) = 0
[pid 5382] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5382] memfd_create("syzkaller", 0) = 3
[pid 5382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5382] 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 5382] munmap(0x7f27798b4000, 262144) = 0
[pid 5382] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.783174][ T5380] loop0: detected capacity change from 0 to 512
[ 69.791939][ T5380] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.802482][ T5380] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.810939][ T5380] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5382] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5382] close(3) = 0
[pid 5382] mkdir("./file0", 0777) = 0
[pid 5382] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5382] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5382] chdir("./file0") = 0
[pid 5382] ioctl(4, LOOP_CLR_FD) = 0
[pid 5382] close(4) = 0
[pid 5382] exit_group(0) = ?
[pid 5382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5382, 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./155/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5384
./strace-static-x86_64: Process 5384 attached
[pid 5384] chdir("./156") = 0
[pid 5384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5384] setpgid(0, 0) = 0
[pid 5384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5384] write(3, "1000", 4) = 4
[pid 5384] close(3) = 0
[pid 5384] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5384] memfd_create("syzkaller", 0) = 3
[pid 5384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5384] 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 5384] munmap(0x7f27798b4000, 262144) = 0
[pid 5384] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.843585][ T5382] loop0: detected capacity change from 0 to 512
[ 69.844708][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 69.860371][ T5382] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.870841][ T5382] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.881640][ T5382] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5384] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5384] close(3) = 0
[pid 5384] mkdir("./file0", 0777) = 0
[pid 5384] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5384] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5384] chdir("./file0") = 0
[pid 5384] ioctl(4, LOOP_CLR_FD) = 0
[pid 5384] close(4) = 0
[pid 5384] exit_group(0) = ?
[pid 5384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5384, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./156/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -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 5386 attached
, child_tidptr=0x5555564b85d0) = 5386
[pid 5386] chdir("./157") = 0
[pid 5386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5386] setpgid(0, 0) = 0
[pid 5386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5386] write(3, "1000", 4) = 4
[pid 5386] close(3) = 0
[pid 5386] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5386] memfd_create("syzkaller", 0) = 3
[pid 5386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5386] 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 5386] munmap(0x7f27798b4000, 262144) = 0
[pid 5386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.921034][ T5384] loop0: detected capacity change from 0 to 512
[ 69.929679][ T5384] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 69.939632][ T5384] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 69.948463][ T5384] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5386] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5386] close(3) = 0
[pid 5386] mkdir("./file0", 0777) = 0
[pid 5386] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5386] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5386] chdir("./file0") = 0
[pid 5386] ioctl(4, LOOP_CLR_FD) = 0
[pid 5386] close(4) = 0
[pid 5386] exit_group(0) = ?
[pid 5386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5386, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./157/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5388
./strace-static-x86_64: Process 5388 attached
[pid 5388] chdir("./158") = 0
[pid 5388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5388] setpgid(0, 0) = 0
[pid 5388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5388] write(3, "1000", 4) = 4
[pid 5388] close(3) = 0
[pid 5388] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5388] memfd_create("syzkaller", 0) = 3
[pid 5388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5388] 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 5388] munmap(0x7f27798b4000, 262144) = 0
[pid 5388] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 69.999798][ T5386] loop0: detected capacity change from 0 to 512
[ 70.008812][ T5386] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.018686][ T5386] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.027703][ T5386] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5388] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5388] close(3) = 0
[pid 5388] mkdir("./file0", 0777) = 0
[pid 5388] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5388] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5388] chdir("./file0") = 0
[pid 5388] ioctl(4, LOOP_CLR_FD) = 0
[pid 5388] close(4) = 0
[pid 5388] exit_group(0) = ?
[pid 5388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5388, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
[ 70.063032][ T5388] loop0: detected capacity change from 0 to 512
[ 70.073942][ T5388] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.084123][ T5388] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.093145][ T5388] EXT4-fs (loop0): 1 truncate cleaned up
rmdir("./158/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5390
./strace-static-x86_64: Process 5390 attached
[pid 5390] chdir("./159") = 0
[pid 5390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5390] setpgid(0, 0) = 0
[pid 5390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5390] write(3, "1000", 4) = 4
[pid 5390] close(3) = 0
[pid 5390] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5390] memfd_create("syzkaller", 0) = 3
[pid 5390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5390] 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 5390] munmap(0x7f27798b4000, 262144) = 0
[pid 5390] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5390] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5390] close(3) = 0
[pid 5390] mkdir("./file0", 0777) = 0
[pid 5390] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5390] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5390] chdir("./file0") = 0
[pid 5390] ioctl(4, LOOP_CLR_FD) = 0
[pid 5390] close(4) = 0
[pid 5390] exit_group(0) = ?
[pid 5390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5390, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./159/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5392
./strace-static-x86_64: Process 5392 attached
[pid 5392] chdir("./160") = 0
[pid 5392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5392] setpgid(0, 0) = 0
[pid 5392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5392] write(3, "1000", 4) = 4
[pid 5392] close(3) = 0
[pid 5392] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5392] memfd_create("syzkaller", 0) = 3
[pid 5392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5392] 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 5392] munmap(0x7f27798b4000, 262144) = 0
[pid 5392] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.153359][ T5390] loop0: detected capacity change from 0 to 512
[ 70.158480][ T5070] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
[ 70.170659][ T5390] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.180209][ T5390] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.189644][ T5390] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5392] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5392] close(3) = 0
[pid 5392] mkdir("./file0", 0777) = 0
[pid 5392] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5392] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5392] chdir("./file0") = 0
[pid 5392] ioctl(4, LOOP_CLR_FD) = 0
[pid 5392] close(4) = 0
[pid 5392] exit_group(0) = ?
[pid 5392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5392, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./160/file0") = 0
getdents64(3, 0x5555564b9620 /* 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)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5394
./strace-static-x86_64: Process 5394 attached
[pid 5394] chdir("./161") = 0
[pid 5394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5394] setpgid(0, 0) = 0
[pid 5394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5394] write(3, "1000", 4) = 4
[pid 5394] close(3) = 0
[pid 5394] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5394] memfd_create("syzkaller", 0) = 3
[pid 5394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5394] 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 5394] munmap(0x7f27798b4000, 262144) = 0
[pid 5394] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.227259][ T5392] loop0: detected capacity change from 0 to 512
[ 70.236095][ T5392] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.245938][ T5392] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.254560][ T5392] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5394] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5394] close(3) = 0
[pid 5394] mkdir("./file0", 0777) = 0
[pid 5394] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5394] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5394] chdir("./file0") = 0
[pid 5394] ioctl(4, LOOP_CLR_FD) = 0
[pid 5394] close(4) = 0
[pid 5394] exit_group(0) = ?
[pid 5394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5394, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./161/file0") = 0
getdents64(3, 0x5555564b9620 /* 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, child_tidptr=0x5555564b85d0) = 5396
./strace-static-x86_64: Process 5396 attached
[pid 5396] chdir("./162") = 0
[pid 5396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5396] setpgid(0, 0) = 0
[pid 5396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5396] write(3, "1000", 4) = 4
[pid 5396] close(3) = 0
[pid 5396] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5396] memfd_create("syzkaller", 0) = 3
[pid 5396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5396] 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 5396] munmap(0x7f27798b4000, 262144) = 0
[pid 5396] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.302367][ T5394] loop0: detected capacity change from 0 to 512
[ 70.311497][ T5394] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.321366][ T5394] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.329586][ T5394] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5396] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5396] close(3) = 0
[pid 5396] mkdir("./file0", 0777) = 0
[pid 5396] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5396] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5396] chdir("./file0") = 0
[pid 5396] ioctl(4, LOOP_CLR_FD) = 0
[pid 5396] close(4) = 0
[pid 5396] exit_group(0) = ?
[pid 5396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5396, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./162/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5398
./strace-static-x86_64: Process 5398 attached
[pid 5398] chdir("./163") = 0
[pid 5398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5398] setpgid(0, 0) = 0
[pid 5398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5398] write(3, "1000", 4) = 4
[pid 5398] close(3) = 0
[pid 5398] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5398] memfd_create("syzkaller", 0) = 3
[pid 5398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5398] 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
[ 70.368411][ T5396] loop0: detected capacity change from 0 to 512
[ 70.376995][ T5396] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.387277][ T5396] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.396344][ T5396] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5398] munmap(0x7f27798b4000, 262144) = 0
[pid 5398] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5398] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5398] close(3) = 0
[pid 5398] mkdir("./file0", 0777) = 0
[pid 5398] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5398] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5398] chdir("./file0") = 0
[pid 5398] ioctl(4, LOOP_CLR_FD) = 0
[pid 5398] close(4) = 0
[pid 5398] exit_group(0) = ?
[pid 5398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5398, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./163/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
[ 70.450666][ T5398] loop0: detected capacity change from 0 to 512
[ 70.454222][ T5070] Buffer I/O error on dev loop0, logical block 0, async page read
[ 70.466378][ T5398] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.476320][ T5398] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.485320][ T5398] EXT4-fs (loop0): 1 truncate cleaned up
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./strace-static-x86_64: Process 5400 attached
, child_tidptr=0x5555564b85d0) = 5400
[pid 5400] chdir("./164") = 0
[pid 5400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5400] setpgid(0, 0) = 0
[pid 5400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5400] write(3, "1000", 4) = 4
[pid 5400] close(3) = 0
[pid 5400] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5400] memfd_create("syzkaller", 0) = 3
[pid 5400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5400] 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 5400] munmap(0x7f27798b4000, 262144) = 0
[pid 5400] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5400] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5400] close(3) = 0
[pid 5400] mkdir("./file0", 0777) = 0
[pid 5400] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5400] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5400] chdir("./file0") = 0
[pid 5400] ioctl(4, LOOP_CLR_FD) = 0
[pid 5400] close(4) = 0
[pid 5400] exit_group(0) = ?
[pid 5400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5400, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./164/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5402
./strace-static-x86_64: Process 5402 attached
[pid 5402] chdir("./165") = 0
[pid 5402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5402] setpgid(0, 0) = 0
[pid 5402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5402] write(3, "1000", 4) = 4
[pid 5402] close(3) = 0
[pid 5402] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5402] memfd_create("syzkaller", 0) = 3
[pid 5402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[ 70.542287][ T5400] loop0: detected capacity change from 0 to 512
[ 70.550660][ T5400] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.560298][ T5400] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.569041][ T5400] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5402] 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 5402] munmap(0x7f27798b4000, 262144) = 0
[pid 5402] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5402] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5402] close(3) = 0
[pid 5402] mkdir("./file0", 0777) = 0
[pid 5402] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5402] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5402] chdir("./file0") = 0
[pid 5402] ioctl(4, LOOP_CLR_FD) = 0
[pid 5402] close(4) = 0
[pid 5402] exit_group(0) = ?
[pid 5402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5402, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./165/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./165") = 0
mkdir("./166", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[ 70.599495][ T5402] loop0: detected capacity change from 0 to 512
[ 70.603939][ T5070] Buffer I/O error on dev loop0, logical block 0, async page read
[ 70.614631][ T5402] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.624451][ T5402] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.633173][ T5402] EXT4-fs (loop0): 1 truncate cleaned up
ioctl(3, LOOP_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=0x5555564b85d0) = 5404
./strace-static-x86_64: Process 5404 attached
[pid 5404] chdir("./166") = 0
[pid 5404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5404] setpgid(0, 0) = 0
[pid 5404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5404] write(3, "1000", 4) = 4
[pid 5404] close(3) = 0
[pid 5404] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5404] memfd_create("syzkaller", 0) = 3
[pid 5404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5404] 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 5404] munmap(0x7f27798b4000, 262144) = 0
[pid 5404] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5404] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5404] close(3) = 0
[pid 5404] mkdir("./file0", 0777) = 0
[pid 5404] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5404] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5404] chdir("./file0") = 0
[pid 5404] ioctl(4, LOOP_CLR_FD) = 0
[pid 5404] close(4) = 0
[pid 5404] exit_group(0) = ?
[pid 5404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5404, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./166/file0") = 0
getdents64(3, 0x5555564b9620 /* 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./strace-static-x86_64: Process 5406 attached
, child_tidptr=0x5555564b85d0) = 5406
[ 70.687696][ T5404] loop0: detected capacity change from 0 to 512
[ 70.696149][ T5404] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.706589][ T5404] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.715040][ T5404] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5406] chdir("./167") = 0
[pid 5406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5406] setpgid(0, 0) = 0
[pid 5406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5406] write(3, "1000", 4) = 4
[pid 5406] close(3) = 0
[pid 5406] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5406] memfd_create("syzkaller", 0) = 3
[pid 5406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5406] 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 5406] munmap(0x7f27798b4000, 262144) = 0
[pid 5406] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5406] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5406] close(3) = 0
[pid 5406] mkdir("./file0", 0777) = 0
[pid 5406] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5406] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5406] chdir("./file0") = 0
[pid 5406] ioctl(4, LOOP_CLR_FD) = 0
[pid 5406] close(4) = 0
[pid 5406] exit_group(0) = ?
[pid 5406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5406, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./167/file0") = 0
getdents64(3, 0x5555564b9620 /* 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) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5408
./strace-static-x86_64: Process 5408 attached
[pid 5408] chdir("./168") = 0
[pid 5408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5408] setpgid(0, 0) = 0
[pid 5408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5408] write(3, "1000", 4) = 4
[pid 5408] close(3) = 0
[pid 5408] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5408] memfd_create("syzkaller", 0) = 3
[pid 5408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5408] 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 5408] munmap(0x7f27798b4000, 262144) = 0
[pid 5408] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.781190][ T5406] loop0: detected capacity change from 0 to 512
[ 70.789432][ T5406] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.799113][ T5406] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.807720][ T5406] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5408] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5408] close(3) = 0
[pid 5408] mkdir("./file0", 0777) = 0
[pid 5408] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5408] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5408] chdir("./file0") = 0
[pid 5408] ioctl(4, LOOP_CLR_FD) = 0
[pid 5408] close(4) = 0
[pid 5408] exit_group(0) = ?
[pid 5408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5408, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./168/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5410
./strace-static-x86_64: Process 5410 attached
[pid 5410] chdir("./169") = 0
[pid 5410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5410] setpgid(0, 0) = 0
[pid 5410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5410] write(3, "1000", 4) = 4
[pid 5410] close(3) = 0
[pid 5410] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5410] memfd_create("syzkaller", 0) = 3
[pid 5410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5410] 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 5410] munmap(0x7f27798b4000, 262144) = 0
[pid 5410] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.858765][ T5408] loop0: detected capacity change from 0 to 512
[ 70.867016][ T5408] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.877018][ T5408] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.885379][ T5408] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5410] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5410] close(3) = 0
[pid 5410] mkdir("./file0", 0777) = 0
[pid 5410] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5410] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5410] chdir("./file0") = 0
[pid 5410] ioctl(4, LOOP_CLR_FD) = 0
[pid 5410] close(4) = 0
[pid 5410] exit_group(0) = ?
[pid 5410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5410, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./169/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5412
./strace-static-x86_64: Process 5412 attached
[pid 5412] chdir("./170") = 0
[pid 5412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5412] setpgid(0, 0) = 0
[pid 5412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5412] write(3, "1000", 4) = 4
[pid 5412] close(3) = 0
[pid 5412] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5412] memfd_create("syzkaller", 0) = 3
[pid 5412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5412] 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 5412] munmap(0x7f27798b4000, 262144) = 0
[pid 5412] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 70.917116][ T5410] loop0: detected capacity change from 0 to 512
[ 70.925263][ T5410] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 70.935077][ T5410] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 70.943694][ T5410] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5412] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5412] close(3) = 0
[pid 5412] mkdir("./file0", 0777) = 0
[pid 5412] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5412] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5412] chdir("./file0") = 0
[pid 5412] ioctl(4, LOOP_CLR_FD) = 0
[pid 5412] close(4) = 0
[pid 5412] exit_group(0) = ?
[pid 5412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5412, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
[ 70.988438][ T5412] loop0: detected capacity change from 0 to 512
[ 70.996620][ T5412] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 71.006729][ T5412] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 71.015503][ T5412] EXT4-fs (loop0): 1 truncate cleaned up
rmdir("./170/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5414
./strace-static-x86_64: Process 5414 attached
[pid 5414] chdir("./171") = 0
[pid 5414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5414] setpgid(0, 0) = 0
[pid 5414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5414] write(3, "1000", 4) = 4
[pid 5414] close(3) = 0
[pid 5414] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5414] memfd_create("syzkaller", 0) = 3
[pid 5414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5414] 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 5414] munmap(0x7f27798b4000, 262144) = 0
[pid 5414] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5414] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5414] close(3) = 0
[pid 5414] mkdir("./file0", 0777) = 0
[pid 5414] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5414] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5414] chdir("./file0") = 0
[pid 5414] ioctl(4, LOOP_CLR_FD) = 0
[pid 5414] close(4) = 0
[pid 5414] exit_group(0) = ?
[pid 5414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5414, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} ---
[ 71.081712][ T5414] loop0: detected capacity change from 0 to 512
[ 71.090153][ T5414] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 71.101731][ T5414] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 71.111423][ T5414] EXT4-fs (loop0): 1 truncate cleaned up
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./171/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5416
./strace-static-x86_64: Process 5416 attached
[pid 5416] chdir("./172") = 0
[pid 5416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5416] setpgid(0, 0) = 0
[pid 5416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5416] write(3, "1000", 4) = 4
[pid 5416] close(3) = 0
[pid 5416] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5416] memfd_create("syzkaller", 0) = 3
[pid 5416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5416] 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 5416] munmap(0x7f27798b4000, 262144) = 0
[pid 5416] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5416] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5416] close(3) = 0
[pid 5416] mkdir("./file0", 0777) = 0
[pid 5416] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5416] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5416] chdir("./file0") = 0
[pid 5416] ioctl(4, LOOP_CLR_FD) = 0
[pid 5416] close(4) = 0
[pid 5416] exit_group(0) = ?
[pid 5416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5416, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
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, 0x5555564b9620 /* 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
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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./172/file0") = 0
getdents64(3, 0x5555564b9620 /* 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=0x5555564b85d0) = 5418
./strace-static-x86_64: Process 5418 attached
[pid 5418] chdir("./173") = 0
[pid 5418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5418] setpgid(0, 0) = 0
[pid 5418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5418] write(3, "1000", 4) = 4
[pid 5418] close(3) = 0
[pid 5418] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5418] memfd_create("syzkaller", 0) = 3
[pid 5418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5418] 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 5418] munmap(0x7f27798b4000, 262144) = 0
[pid 5418] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 71.193047][ T5416] loop0: detected capacity change from 0 to 512
[ 71.201967][ T5416] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 71.212395][ T5416] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 71.221601][ T5416] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5418] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5418] close(3) = 0
[pid 5418] mkdir("./file0", 0777) = 0
[pid 5418] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5418] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5418] chdir("./file0") = 0
[pid 5418] ioctl(4, LOOP_CLR_FD) = 0
[pid 5418] close(4) = 0
[pid 5418] exit_group(0) = ?
[pid 5418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5418, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./173/file0") = 0
getdents64(3, 0x5555564b9620 /* 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
[ 71.259156][ T5418] loop0: detected capacity change from 0 to 512
[ 71.267705][ T5418] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 71.277970][ T5418] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 71.286444][ T5418] EXT4-fs (loop0): 1 truncate cleaned up
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564b85d0) = 5420
./strace-static-x86_64: Process 5420 attached
[pid 5420] chdir("./174") = 0
[pid 5420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5420] setpgid(0, 0) = 0
[pid 5420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5420] write(3, "1000", 4) = 4
[pid 5420] close(3) = 0
[pid 5420] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5420] memfd_create("syzkaller", 0) = 3
[pid 5420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5420] 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 5420] munmap(0x7f27798b4000, 262144) = 0
[pid 5420] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 5420] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5420] close(3) = 0
[pid 5420] mkdir("./file0", 0777) = 0
[pid 5420] mount("/dev/loop0", "./file0", "ext4", MS_RDONLY|MS_NOSUID|MS_NODEV|MS_MANDLOCK, "\x6e\x6f\x6a\x6f\x75\x72\x6e\x61\x6c\x5f\x63\x68\x65\x63\x6b\x73\x75\x6d\x2c\x6e\x6f\x64\x65\x6c\x61\x6c\x6c\x6f\x63\x2c\x67\x72\x70\x6a\x71\x75\x6f\x74\x61\x3d\x16\x62\x61\x72\x72\x69\x65\x72\x3d\x30\x78\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x35\x2c\x64\x61\x74\x61\x5f\x65\x72\x72\x3d\x61\x62\x6f\x72\x74\x2c\x61\x62\x6f\x72\x74\x2c\x64\x69\x73\x63\x61\x72\x64\x2c\x75\x73\x72"...) = 0
[pid 5420] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 5420] chdir("./file0") = 0
[pid 5420] ioctl(4, LOOP_CLR_FD) = 0
[pid 5420] close(4) = 0
[pid 5420] exit_group(0) = ?
[pid 5420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5420, si_uid=0, si_status=0, si_utime=0, si_stime=3 /* 0.03 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
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, 0x5555564b9620 /* 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, 0x5555564c1660 /* 2 entries */, 32768) = 48
getdents64(4, 0x5555564c1660 /* 0 entries */, 32768) = 0
close(4) = 0
rmdir("./174/file0") = 0
getdents64(3, 0x5555564b9620 /* 0 entries */, 32768) = 0
close(3) = 0
rmdir("./174") = 0
mkdir("./175", 0777) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_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=0x5555564b85d0) = 5422
./strace-static-x86_64: Process 5422 attached
[pid 5422] chdir("./175") = 0
[pid 5422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5422] setpgid(0, 0) = 0
[pid 5422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5422] write(3, "1000", 4) = 4
[pid 5422] close(3) = 0
[pid 5422] symlink("/dev/binderfs", "./binderfs") = 0
[pid 5422] memfd_create("syzkaller", 0) = 3
[pid 5422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f27798b4000
[pid 5422] 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 5422] munmap(0x7f27798b4000, 262144) = 0
[pid 5422] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 71.340022][ T5420] loop0: detected capacity change from 0 to 512
[ 71.348783][ T5420] EXT4-fs: Journaled quota options ignored when QUOTA feature is enabled
[ 71.359967][ T5420] EXT4-fs (loop0): orphan cleanup on readonly fs
[ 71.368855][ T5420] EXT4-fs (loop0): 1 truncate cleaned up
[pid 5422] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 5422] close(3) = 0
[pid 5422] mkdir("./file0", 0777) = 0