./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor409357489

<...>
 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20400, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19563", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19563/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19563/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19563/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19563")                        = 0
mkdir("./19564", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20401
./strace-static-x86_64: Process 20401 attached
[pid 20401] set_robust_list(0x5555589fe660, 24) = 0
[pid 20401] chdir("./19564")            = 0
[pid 20401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20401] setpgid(0, 0)               = 0
[pid 20401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20401] write(3, "1000", 4)         = 4
[pid 20401] close(3)                    = 0
[pid 20401] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20401] write(1, "executing program\n", 18executing program
) = 18
[pid 20401] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20401] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20401] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20401] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20401] exit_group(0)               = ?
[pid 20401] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20401, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19564", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19564/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19564/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19564/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19564")                        = 0
mkdir("./19565", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20402
./strace-static-x86_64: Process 20402 attached
[pid 20402] set_robust_list(0x5555589fe660, 24) = 0
[pid 20402] chdir("./19565")            = 0
[pid 20402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20402] setpgid(0, 0)               = 0
[pid 20402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20402] write(3, "1000", 4)         = 4
[pid 20402] close(3)                    = 0
[pid 20402] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20402] write(1, "executing program\n", 18) = 18
[pid 20402] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20402] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20402] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20402] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20402] exit_group(0)               = ?
[pid 20402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19565", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19565/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19565/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19565/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19565")                        = 0
mkdir("./19566", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20403
./strace-static-x86_64: Process 20403 attached
[pid 20403] set_robust_list(0x5555589fe660, 24) = 0
[pid 20403] chdir("./19566")            = 0
[pid 20403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20403] setpgid(0, 0)               = 0
[pid 20403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20403] write(3, "1000", 4)         = 4
[pid 20403] close(3)                    = 0
[pid 20403] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20403] write(1, "executing program\n", 18executing program
) = 18
[pid 20403] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20403] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20403] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20403] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20403] exit_group(0)               = ?
[pid 20403] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20403, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19566", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19566/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19566/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19566/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19566")                        = 0
mkdir("./19567", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20405
./strace-static-x86_64: Process 20405 attached
[pid 20405] set_robust_list(0x5555589fe660, 24) = 0
[pid 20405] chdir("./19567")            = 0
[pid 20405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20405] setpgid(0, 0)               = 0
[pid 20405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20405] write(3, "1000", 4)         = 4
[pid 20405] close(3)                    = 0
[pid 20405] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20405] write(1, "executing program\n", 18executing program
) = 18
[pid 20405] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20405] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20405] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20405] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20405] exit_group(0)               = ?
[pid 20405] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20405, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19567", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19567/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19567/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19567/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19567")                        = 0
mkdir("./19568", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20406
./strace-static-x86_64: Process 20406 attached
[pid 20406] set_robust_list(0x5555589fe660, 24) = 0
[pid 20406] chdir("./19568")            = 0
[pid 20406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20406] setpgid(0, 0)               = 0
[pid 20406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20406] write(3, "1000", 4)         = 4
[pid 20406] close(3)                    = 0
[pid 20406] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20406] write(1, "executing program\n", 18) = 18
executing program
[pid 20406] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20406] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20406] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20406] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20406] exit_group(0)               = ?
[pid 20406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19568", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19568/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19568/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19568/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19568")                        = 0
mkdir("./19569", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20407
./strace-static-x86_64: Process 20407 attached
[pid 20407] set_robust_list(0x5555589fe660, 24) = 0
[pid 20407] chdir("./19569")            = 0
[pid 20407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20407] setpgid(0, 0)               = 0
[pid 20407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20407] write(3, "1000", 4)         = 4
[pid 20407] close(3)                    = 0
[pid 20407] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20407] write(1, "executing program\n", 18executing program
) = 18
[pid 20407] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20407] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20407] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20407] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20407] exit_group(0)               = ?
[pid 20407] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20407, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19569", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19569/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19569/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19569/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19569")                        = 0
mkdir("./19570", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20408
./strace-static-x86_64: Process 20408 attached
[pid 20408] set_robust_list(0x5555589fe660, 24) = 0
[pid 20408] chdir("./19570")            = 0
[pid 20408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20408] setpgid(0, 0)               = 0
[pid 20408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20408] write(3, "1000", 4)         = 4
[pid 20408] close(3)                    = 0
[pid 20408] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20408] write(1, "executing program\n", 18) = 18
[pid 20408] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20408] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20408] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20408] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20408] exit_group(0)               = ?
[pid 20408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19570", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19570/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19570/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19570/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19570")                        = 0
mkdir("./19571", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20409 attached
, child_tidptr=0x5555589fe650) = 20409
[pid 20409] set_robust_list(0x5555589fe660, 24) = 0
[pid 20409] chdir("./19571")            = 0
[pid 20409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20409] setpgid(0, 0)               = 0
[pid 20409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20409] write(3, "1000", 4)         = 4
[pid 20409] close(3)                    = 0
[pid 20409] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20409] write(1, "executing program\n", 18executing program
) = 18
[pid 20409] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20409] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20409] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20409] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20409] exit_group(0)               = ?
[pid 20409] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20409, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19571", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19571/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19571/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19571/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19571")                        = 0
mkdir("./19572", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20410
./strace-static-x86_64: Process 20410 attached
[pid 20410] set_robust_list(0x5555589fe660, 24) = 0
[pid 20410] chdir("./19572")            = 0
[pid 20410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20410] setpgid(0, 0)               = 0
[pid 20410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20410] write(3, "1000", 4)         = 4
[pid 20410] close(3)                    = 0
[pid 20410] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20410] write(1, "executing program\n", 18executing program
) = 18
[pid 20410] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20410] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20410] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20410] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20410] exit_group(0)               = ?
[pid 20410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20410, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19572", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19572/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19572/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19572/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19572")                        = 0
mkdir("./19573", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20411
./strace-static-x86_64: Process 20411 attached
[pid 20411] set_robust_list(0x5555589fe660, 24) = 0
[pid 20411] chdir("./19573")            = 0
[pid 20411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20411] setpgid(0, 0)               = 0
[pid 20411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20411] write(3, "1000", 4)         = 4
[pid 20411] close(3)                    = 0
[pid 20411] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20411] write(1, "executing program\n", 18executing program
) = 18
[pid 20411] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20411] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20411] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20411] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20411] exit_group(0)               = ?
[pid 20411] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20411, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19573", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19573/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19573/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19573/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19573")                        = 0
mkdir("./19574", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20412
./strace-static-x86_64: Process 20412 attached
[pid 20412] set_robust_list(0x5555589fe660, 24) = 0
[pid 20412] chdir("./19574")            = 0
[pid 20412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20412] setpgid(0, 0)               = 0
[pid 20412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20412] write(3, "1000", 4)         = 4
[pid 20412] close(3)                    = 0
[pid 20412] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20412] write(1, "executing program\n", 18executing program
) = 18
[pid 20412] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20412] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20412] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20412] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20412] exit_group(0)               = ?
[pid 20412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19574", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19574/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19574/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19574/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19574")                        = 0
mkdir("./19575", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20413
./strace-static-x86_64: Process 20413 attached
[pid 20413] set_robust_list(0x5555589fe660, 24) = 0
[pid 20413] chdir("./19575")            = 0
[pid 20413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20413] setpgid(0, 0)               = 0
[pid 20413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20413] write(3, "1000", 4)         = 4
[pid 20413] close(3)                    = 0
[pid 20413] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20413] write(1, "executing program\n", 18executing program
) = 18
[pid 20413] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20413] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20413] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20413] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20413] exit_group(0)               = ?
[pid 20413] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20413, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19575", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19575/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19575/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19575/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19575")                        = 0
mkdir("./19576", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20414
./strace-static-x86_64: Process 20414 attached
[pid 20414] set_robust_list(0x5555589fe660, 24) = 0
[pid 20414] chdir("./19576")            = 0
[pid 20414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20414] setpgid(0, 0)               = 0
[pid 20414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20414] write(3, "1000", 4)         = 4
[pid 20414] close(3)                    = 0
[pid 20414] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20414] write(1, "executing program\n", 18executing program
) = 18
[pid 20414] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20414] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20414] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20414] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20414] exit_group(0)               = ?
[pid 20414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19576", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19576/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19576/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19576/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19576")                        = 0
mkdir("./19577", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20415
./strace-static-x86_64: Process 20415 attached
[pid 20415] set_robust_list(0x5555589fe660, 24) = 0
[pid 20415] chdir("./19577")            = 0
[pid 20415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20415] setpgid(0, 0)               = 0
[pid 20415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20415] write(3, "1000", 4)         = 4
[pid 20415] close(3)                    = 0
[pid 20415] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20415] write(1, "executing program\n", 18executing program
) = 18
[pid 20415] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20415] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20415] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20415] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20415] exit_group(0)               = ?
[pid 20415] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20415, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19577", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19577/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19577/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19577/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19577")                        = 0
mkdir("./19578", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20416
./strace-static-x86_64: Process 20416 attached
[pid 20416] set_robust_list(0x5555589fe660, 24) = 0
[pid 20416] chdir("./19578")            = 0
[pid 20416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20416] setpgid(0, 0)               = 0
[pid 20416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20416] write(3, "1000", 4)         = 4
[pid 20416] close(3)                    = 0
[pid 20416] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20416] write(1, "executing program\n", 18executing program
) = 18
[pid 20416] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20416] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20416] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20416] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20416] exit_group(0)               = ?
[pid 20416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19578", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19578/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19578/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19578/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19578")                        = 0
mkdir("./19579", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20417
./strace-static-x86_64: Process 20417 attached
[pid 20417] set_robust_list(0x5555589fe660, 24) = 0
[pid 20417] chdir("./19579")            = 0
[pid 20417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20417] setpgid(0, 0)               = 0
[pid 20417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20417] write(3, "1000", 4)         = 4
[pid 20417] close(3)                    = 0
[pid 20417] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20417] write(1, "executing program\n", 18) = 18
[pid 20417] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20417] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20417] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20417] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20417] exit_group(0)               = ?
[pid 20417] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20417, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19579", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19579/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19579/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19579/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19579")                        = 0
mkdir("./19580", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20418
./strace-static-x86_64: Process 20418 attached
[pid 20418] set_robust_list(0x5555589fe660, 24) = 0
[pid 20418] chdir("./19580")            = 0
[pid 20418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20418] setpgid(0, 0)               = 0
[pid 20418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20418] write(3, "1000", 4)         = 4
[pid 20418] close(3)                    = 0
[pid 20418] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20418] write(1, "executing program\n", 18executing program
) = 18
[pid 20418] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20418] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20418] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20418] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20418] exit_group(0)               = ?
[pid 20418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19580", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19580/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19580/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19580/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19580")                        = 0
mkdir("./19581", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20419
./strace-static-x86_64: Process 20419 attached
[pid 20419] set_robust_list(0x5555589fe660, 24) = 0
[pid 20419] chdir("./19581")            = 0
[pid 20419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20419] setpgid(0, 0)               = 0
[pid 20419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20419] write(3, "1000", 4)         = 4
[pid 20419] close(3)                    = 0
[pid 20419] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20419] write(1, "executing program\n", 18executing program
) = 18
[pid 20419] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20419] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20419] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20419] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20419] exit_group(0)               = ?
[pid 20419] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20419, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19581", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19581/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19581/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19581/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19581")                        = 0
mkdir("./19582", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20420
./strace-static-x86_64: Process 20420 attached
[pid 20420] set_robust_list(0x5555589fe660, 24) = 0
[pid 20420] chdir("./19582")            = 0
[pid 20420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20420] setpgid(0, 0)               = 0
[pid 20420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20420] write(3, "1000", 4)         = 4
[pid 20420] close(3)                    = 0
executing program
[pid 20420] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20420] write(1, "executing program\n", 18) = 18
[pid 20420] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20420] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20420] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20420] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20420] exit_group(0)               = ?
[pid 20420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19582", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19582/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19582/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19582/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19582")                        = 0
mkdir("./19583", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20421
./strace-static-x86_64: Process 20421 attached
[pid 20421] set_robust_list(0x5555589fe660, 24) = 0
[pid 20421] chdir("./19583")            = 0
[pid 20421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20421] setpgid(0, 0)               = 0
[pid 20421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20421] write(3, "1000", 4)         = 4
[pid 20421] close(3)                    = 0
[pid 20421] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20421] write(1, "executing program\n", 18) = 18
[pid 20421] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20421] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20421] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20421] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20421] exit_group(0)               = ?
[pid 20421] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20421, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19583", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19583/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19583/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19583/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19583")                        = 0
mkdir("./19584", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20422
./strace-static-x86_64: Process 20422 attached
[pid 20422] set_robust_list(0x5555589fe660, 24) = 0
[pid 20422] chdir("./19584")            = 0
[pid 20422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20422] setpgid(0, 0)               = 0
[pid 20422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20422] write(3, "1000", 4)         = 4
[pid 20422] close(3)                    = 0
[pid 20422] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20422] write(1, "executing program\n", 18executing program
) = 18
[pid 20422] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20422] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20422] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20422] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20422] exit_group(0)               = ?
[pid 20422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20422, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19584", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19584/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19584/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19584/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19584")                        = 0
mkdir("./19585", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20423
./strace-static-x86_64: Process 20423 attached
[pid 20423] set_robust_list(0x5555589fe660, 24) = 0
[pid 20423] chdir("./19585")            = 0
[pid 20423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20423] setpgid(0, 0)               = 0
[pid 20423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20423] write(3, "1000", 4)         = 4
[pid 20423] close(3)                    = 0
[pid 20423] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20423] write(1, "executing program\n", 18executing program
) = 18
[pid 20423] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20423] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20423] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20423] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20423] exit_group(0)               = ?
[pid 20423] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20423, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19585", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19585/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19585/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19585/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19585")                        = 0
mkdir("./19586", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20424
./strace-static-x86_64: Process 20424 attached
[pid 20424] set_robust_list(0x5555589fe660, 24) = 0
[pid 20424] chdir("./19586")            = 0
[pid 20424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20424] setpgid(0, 0)               = 0
[pid 20424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20424] write(3, "1000", 4)         = 4
[pid 20424] close(3)                    = 0
[pid 20424] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20424] write(1, "executing program\n", 18) = 18
[pid 20424] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20424] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20424] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20424] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20424] exit_group(0)               = ?
[pid 20424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19586", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19586/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19586/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19586/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19586")                        = 0
mkdir("./19587", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20425
./strace-static-x86_64: Process 20425 attached
[pid 20425] set_robust_list(0x5555589fe660, 24) = 0
[pid 20425] chdir("./19587")            = 0
[pid 20425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20425] setpgid(0, 0)               = 0
[pid 20425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20425] write(3, "1000", 4)         = 4
[pid 20425] close(3)                    = 0
[pid 20425] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20425] write(1, "executing program\n", 18executing program
) = 18
[pid 20425] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20425] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20425] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20425] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20425] exit_group(0)               = ?
[pid 20425] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20425, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19587", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19587/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19587/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19587/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19587")                        = 0
mkdir("./19588", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20426
./strace-static-x86_64: Process 20426 attached
[pid 20426] set_robust_list(0x5555589fe660, 24) = 0
[pid 20426] chdir("./19588")            = 0
[pid 20426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20426] setpgid(0, 0)               = 0
[pid 20426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20426] write(3, "1000", 4)         = 4
[pid 20426] close(3)                    = 0
[pid 20426] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20426] write(1, "executing program\n", 18) = 18
[pid 20426] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20426] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20426] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20426] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20426] exit_group(0)               = ?
[pid 20426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19588", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19588/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19588/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19588/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19588")                        = 0
mkdir("./19589", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20427 attached
, child_tidptr=0x5555589fe650) = 20427
[pid 20427] set_robust_list(0x5555589fe660, 24) = 0
[pid 20427] chdir("./19589")            = 0
[pid 20427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20427] setpgid(0, 0)               = 0
[pid 20427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20427] write(3, "1000", 4)         = 4
[pid 20427] close(3)                    = 0
[pid 20427] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20427] write(1, "executing program\n", 18executing program
) = 18
[pid 20427] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20427] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20427] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20427] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20427] exit_group(0)               = ?
[pid 20427] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20427, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19589", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19589/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19589/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19589/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19589")                        = 0
mkdir("./19590", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20428
./strace-static-x86_64: Process 20428 attached
[pid 20428] set_robust_list(0x5555589fe660, 24) = 0
[pid 20428] chdir("./19590")            = 0
[pid 20428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20428] setpgid(0, 0)               = 0
[pid 20428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20428] write(3, "1000", 4)         = 4
[pid 20428] close(3)                    = 0
[pid 20428] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20428] write(1, "executing program\n", 18) = 18
[pid 20428] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20428] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20428] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20428] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20428] exit_group(0)               = ?
[pid 20428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19590", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19590/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19590/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19590/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19590")                        = 0
mkdir("./19591", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20429
./strace-static-x86_64: Process 20429 attached
[pid 20429] set_robust_list(0x5555589fe660, 24) = 0
[pid 20429] chdir("./19591")            = 0
[pid 20429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20429] setpgid(0, 0)               = 0
[pid 20429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20429] write(3, "1000", 4)         = 4
[pid 20429] close(3)                    = 0
[pid 20429] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20429] write(1, "executing program\n", 18executing program
) = 18
[pid 20429] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20429] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20429] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20429] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20429] exit_group(0)               = ?
[pid 20429] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20429, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19591", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19591/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19591/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19591/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19591")                        = 0
mkdir("./19592", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20430
./strace-static-x86_64: Process 20430 attached
[pid 20430] set_robust_list(0x5555589fe660, 24) = 0
[pid 20430] chdir("./19592")            = 0
[pid 20430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20430] setpgid(0, 0)               = 0
[pid 20430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20430] write(3, "1000", 4)         = 4
[pid 20430] close(3)                    = 0
[pid 20430] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20430] write(1, "executing program\n", 18executing program
) = 18
[pid 20430] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20430] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20430] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20430] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20430] exit_group(0)               = ?
[pid 20430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19592", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19592/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19592/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19592/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19592")                        = 0
mkdir("./19593", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20431
./strace-static-x86_64: Process 20431 attached
[pid 20431] set_robust_list(0x5555589fe660, 24) = 0
[pid 20431] chdir("./19593")            = 0
[pid 20431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20431] setpgid(0, 0)               = 0
[pid 20431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20431] write(3, "1000", 4)         = 4
[pid 20431] close(3)                    = 0
[pid 20431] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20431] write(1, "executing program\n", 18) = 18
[pid 20431] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20431] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20431] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20431] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20431] exit_group(0)               = ?
[pid 20431] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20431, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19593", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19593/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19593/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19593/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19593")                        = 0
mkdir("./19594", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20432
./strace-static-x86_64: Process 20432 attached
[pid 20432] set_robust_list(0x5555589fe660, 24) = 0
[pid 20432] chdir("./19594")            = 0
[pid 20432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20432] setpgid(0, 0)               = 0
[pid 20432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20432] write(3, "1000", 4)         = 4
[pid 20432] close(3)                    = 0
[pid 20432] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20432] write(1, "executing program\n", 18) = 18
[pid 20432] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20432] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20432] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20432] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20432] exit_group(0)               = ?
[pid 20432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20432, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19594", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19594/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19594/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19594/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19594")                        = 0
mkdir("./19595", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20433
./strace-static-x86_64: Process 20433 attached
[pid 20433] set_robust_list(0x5555589fe660, 24) = 0
[pid 20433] chdir("./19595")            = 0
[pid 20433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20433] setpgid(0, 0)               = 0
[pid 20433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20433] write(3, "1000", 4)         = 4
[pid 20433] close(3)                    = 0
[pid 20433] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20433] write(1, "executing program\n", 18executing program
) = 18
[pid 20433] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20433] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20433] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20433] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20433] exit_group(0)               = ?
[pid 20433] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20433, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19595", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19595/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19595/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19595/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19595")                        = 0
mkdir("./19596", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20434
./strace-static-x86_64: Process 20434 attached
[pid 20434] set_robust_list(0x5555589fe660, 24) = 0
[pid 20434] chdir("./19596")            = 0
[pid 20434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20434] setpgid(0, 0)               = 0
[pid 20434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20434] write(3, "1000", 4)         = 4
[pid 20434] close(3)                    = 0
[pid 20434] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20434] write(1, "executing program\n", 18executing program
) = 18
[pid 20434] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20434] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20434] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20434] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20434] exit_group(0)               = ?
[pid 20434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19596", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19596/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19596/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19596/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19596")                        = 0
mkdir("./19597", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20435 attached
, child_tidptr=0x5555589fe650) = 20435
[pid 20435] set_robust_list(0x5555589fe660, 24) = 0
[pid 20435] chdir("./19597")            = 0
[pid 20435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20435] setpgid(0, 0)               = 0
[pid 20435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20435] write(3, "1000", 4)         = 4
[pid 20435] close(3)                    = 0
[pid 20435] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20435] write(1, "executing program\n", 18) = 18
[pid 20435] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20435] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20435] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20435] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20435] exit_group(0)               = ?
[pid 20435] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20435, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19597", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19597/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19597/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19597/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19597")                        = 0
mkdir("./19598", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20436 attached
 <unfinished ...>
[pid 20436] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20436
[pid 20436] chdir("./19598")            = 0
[pid 20436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20436] setpgid(0, 0)               = 0
[pid 20436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20436] write(3, "1000", 4)         = 4
[pid 20436] close(3)                    = 0
[pid 20436] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20436] write(1, "executing program\n", 18) = 18
[pid 20436] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20436] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20436] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20436] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20436] exit_group(0)               = ?
[pid 20436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19598", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19598/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19598/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19598/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19598")                        = 0
mkdir("./19599", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20437
./strace-static-x86_64: Process 20437 attached
[pid 20437] set_robust_list(0x5555589fe660, 24) = 0
[pid 20437] chdir("./19599")            = 0
[pid 20437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20437] setpgid(0, 0)               = 0
[pid 20437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20437] write(3, "1000", 4)         = 4
[pid 20437] close(3executing program
)                    = 0
[pid 20437] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20437] write(1, "executing program\n", 18) = 18
[pid 20437] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20437] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20437] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20437] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20437] exit_group(0)               = ?
[pid 20437] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20437, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19599", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19599/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19599/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19599/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19599")                        = 0
mkdir("./19600", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20438
./strace-static-x86_64: Process 20438 attached
[pid 20438] set_robust_list(0x5555589fe660, 24) = 0
[pid 20438] chdir("./19600")            = 0
[pid 20438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20438] setpgid(0, 0)               = 0
[pid 20438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20438] write(3, "1000", 4)         = 4
[pid 20438] close(3)                    = 0
[pid 20438] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20438] write(1, "executing program\n", 18executing program
) = 18
[pid 20438] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20438] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20438] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20438] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20438] exit_group(0)               = ?
[pid 20438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20438, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19600", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19600/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19600/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19600/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19600")                        = 0
mkdir("./19601", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20439
./strace-static-x86_64: Process 20439 attached
[pid 20439] set_robust_list(0x5555589fe660, 24) = 0
[pid 20439] chdir("./19601")            = 0
[pid 20439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20439] setpgid(0, 0)               = 0
[pid 20439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20439] write(3, "1000", 4)         = 4
[pid 20439] close(3)                    = 0
[pid 20439] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20439] write(1, "executing program\n", 18executing program
) = 18
[pid 20439] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20439] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20439] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20439] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20439] exit_group(0)               = ?
[pid 20439] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20439, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19601", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19601/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19601/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19601/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19601")                        = 0
mkdir("./19602", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20440
./strace-static-x86_64: Process 20440 attached
[pid 20440] set_robust_list(0x5555589fe660, 24) = 0
[pid 20440] chdir("./19602")            = 0
[pid 20440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20440] setpgid(0, 0)               = 0
[pid 20440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20440] write(3, "1000", 4)         = 4
[pid 20440] close(3)                    = 0
[pid 20440] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20440] write(1, "executing program\n", 18executing program
) = 18
[pid 20440] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20440] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20440] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20440] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20440] exit_group(0)               = ?
[pid 20440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19602", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19602/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19602/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19602/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19602")                        = 0
mkdir("./19603", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20441
./strace-static-x86_64: Process 20441 attached
[pid 20441] set_robust_list(0x5555589fe660, 24) = 0
[pid 20441] chdir("./19603")            = 0
[pid 20441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20441] setpgid(0, 0)               = 0
[pid 20441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20441] write(3, "1000", 4)         = 4
[pid 20441] close(3)                    = 0
[pid 20441] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20441] write(1, "executing program\n", 18) = 18
[pid 20441] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20441] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20441] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20441] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20441] exit_group(0)               = ?
[pid 20441] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20441, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19603", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19603", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19603/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19603/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19603/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19603")                        = 0
mkdir("./19604", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20442
./strace-static-x86_64: Process 20442 attached
[pid 20442] set_robust_list(0x5555589fe660, 24) = 0
[pid 20442] chdir("./19604")            = 0
[pid 20442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20442] setpgid(0, 0)               = 0
[pid 20442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20442] write(3, "1000", 4)         = 4
[pid 20442] close(3)                    = 0
[pid 20442] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20442] write(1, "executing program\n", 18executing program
) = 18
[pid 20442] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20442] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20442] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20442] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20442] exit_group(0)               = ?
[pid 20442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19604", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19604", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19604/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19604/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19604/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19604")                        = 0
mkdir("./19605", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20443
./strace-static-x86_64: Process 20443 attached
[pid 20443] set_robust_list(0x5555589fe660, 24) = 0
[pid 20443] chdir("./19605")            = 0
[pid 20443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20443] setpgid(0, 0)               = 0
[pid 20443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20443] write(3, "1000", 4)         = 4
[pid 20443] close(3)                    = 0
[pid 20443] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20443] write(1, "executing program\n", 18executing program
) = 18
[pid 20443] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20443] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20443] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20443] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20443] exit_group(0)               = ?
[pid 20443] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20443, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19605", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19605", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19605/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19605/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19605/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19605")                        = 0
mkdir("./19606", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20444
./strace-static-x86_64: Process 20444 attached
[pid 20444] set_robust_list(0x5555589fe660, 24) = 0
[pid 20444] chdir("./19606")            = 0
[pid 20444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20444] setpgid(0, 0)               = 0
[pid 20444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20444] write(3, "1000", 4)         = 4
[pid 20444] close(3)                    = 0
[pid 20444] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20444] write(1, "executing program\n", 18) = 18
[pid 20444] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20444] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20444] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20444] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20444] exit_group(0)               = ?
[pid 20444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20444, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19606", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19606", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19606/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19606/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19606/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19606")                        = 0
mkdir("./19607", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20445
./strace-static-x86_64: Process 20445 attached
[pid 20445] set_robust_list(0x5555589fe660, 24) = 0
[pid 20445] chdir("./19607")            = 0
[pid 20445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20445] setpgid(0, 0)               = 0
[pid 20445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20445] write(3, "1000", 4)         = 4
[pid 20445] close(3)                    = 0
[pid 20445] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20445] write(1, "executing program\n", 18executing program
) = 18
[pid 20445] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20445] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20445] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20445] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20445] exit_group(0)               = ?
[pid 20445] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20445, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19607", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19607", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19607/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19607/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19607/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19607")                        = 0
mkdir("./19608", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20446
./strace-static-x86_64: Process 20446 attached
[pid 20446] set_robust_list(0x5555589fe660, 24) = 0
[pid 20446] chdir("./19608")            = 0
[pid 20446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20446] setpgid(0, 0)               = 0
[pid 20446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20446] write(3, "1000", 4)         = 4
[pid 20446] close(3)                    = 0
[pid 20446] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20446] write(1, "executing program\n", 18) = 18
[pid 20446] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20446] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20446] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20446] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20446] exit_group(0)               = ?
[pid 20446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19608", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19608", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19608/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19608/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19608/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19608")                        = 0
mkdir("./19609", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20447
./strace-static-x86_64: Process 20447 attached
[pid 20447] set_robust_list(0x5555589fe660, 24) = 0
[pid 20447] chdir("./19609")            = 0
[pid 20447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20447] setpgid(0, 0)               = 0
[pid 20447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20447] write(3, "1000", 4)         = 4
[pid 20447] close(3)                    = 0
[pid 20447] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20447] write(1, "executing program\n", 18executing program
) = 18
[pid 20447] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20447] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20447] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20447] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20447] exit_group(0)               = ?
[pid 20447] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20447, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19609", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19609", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19609/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19609/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19609/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19609")                        = 0
mkdir("./19610", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20448 attached
 <unfinished ...>
[pid 20448] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20448
[pid 20448] chdir("./19610")            = 0
[pid 20448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20448] setpgid(0, 0)               = 0
[pid 20448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20448] write(3, "1000", 4)         = 4
[pid 20448] close(3)                    = 0
[pid 20448] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20448] write(1, "executing program\n", 18executing program
) = 18
[pid 20448] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20448] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20448] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20448] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20448] exit_group(0)               = ?
[pid 20448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19610", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19610", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19610/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19610/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19610/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19610")                        = 0
mkdir("./19611", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20449
./strace-static-x86_64: Process 20449 attached
[pid 20449] set_robust_list(0x5555589fe660, 24) = 0
[pid 20449] chdir("./19611")            = 0
[pid 20449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20449] setpgid(0, 0)               = 0
[pid 20449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20449] write(3, "1000", 4)         = 4
[pid 20449] close(3)                    = 0
[pid 20449] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20449] write(1, "executing program\n", 18executing program
) = 18
[pid 20449] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20449] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20449] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20449] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20449] exit_group(0)               = ?
[pid 20449] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20449, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19611", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19611", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19611/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19611/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19611/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19611")                        = 0
mkdir("./19612", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20450 attached
 <unfinished ...>
[pid 20450] set_robust_list(0x5555589fe660, 24 <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20450
[pid 20450] <... set_robust_list resumed>) = 0
[pid 20450] chdir("./19612")            = 0
[pid 20450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20450] setpgid(0, 0)               = 0
[pid 20450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20450] write(3, "1000", 4)         = 4
[pid 20450] close(3)                    = 0
[pid 20450] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20450] write(1, "executing program\n", 18executing program
) = 18
[pid 20450] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20450] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20450] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20450] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20450] exit_group(0)               = ?
[pid 20450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19612", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19612", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19612/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19612/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19612/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19612")                        = 0
mkdir("./19613", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20451
./strace-static-x86_64: Process 20451 attached
[pid 20451] set_robust_list(0x5555589fe660, 24) = 0
[pid 20451] chdir("./19613")            = 0
[pid 20451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20451] setpgid(0, 0)               = 0
[pid 20451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20451] write(3, "1000", 4)         = 4
[pid 20451] close(3)                    = 0
[pid 20451] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20451] write(1, "executing program\n", 18) = 18
[pid 20451] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20451] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20451] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20451] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20451] exit_group(0)               = ?
[pid 20451] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20451, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19613", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19613", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19613/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19613/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19613/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19613")                        = 0
mkdir("./19614", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20452
./strace-static-x86_64: Process 20452 attached
[pid 20452] set_robust_list(0x5555589fe660, 24) = 0
[pid 20452] chdir("./19614")            = 0
[pid 20452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20452] setpgid(0, 0)               = 0
[pid 20452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20452] write(3, "1000", 4)         = 4
[pid 20452] close(3)                    = 0
[pid 20452] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20452] write(1, "executing program\n", 18) = 18
[pid 20452] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20452] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20452] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20452] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20452] exit_group(0)               = ?
[pid 20452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19614", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19614", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19614/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19614/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19614/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19614")                        = 0
mkdir("./19615", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20453
./strace-static-x86_64: Process 20453 attached
[pid 20453] set_robust_list(0x5555589fe660, 24) = 0
[pid 20453] chdir("./19615")            = 0
[pid 20453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20453] setpgid(0, 0)               = 0
[pid 20453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20453] write(3, "1000", 4)         = 4
[pid 20453] close(3)                    = 0
[pid 20453] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20453] write(1, "executing program\n", 18executing program
) = 18
[pid 20453] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20453] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20453] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20453] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20453] exit_group(0)               = ?
[pid 20453] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20453, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19615", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19615", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19615/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19615/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19615/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19615")                        = 0
mkdir("./19616", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20454
./strace-static-x86_64: Process 20454 attached
[pid 20454] set_robust_list(0x5555589fe660, 24) = 0
[pid 20454] chdir("./19616")            = 0
[pid 20454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20454] setpgid(0, 0)               = 0
[pid 20454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20454] write(3, "1000", 4)         = 4
[pid 20454] close(3)                    = 0
[pid 20454] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20454] write(1, "executing program\n", 18executing program
) = 18
[pid 20454] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20454] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20454] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20454] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20454] exit_group(0)               = ?
[pid 20454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19616", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19616", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19616/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19616/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19616/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19616")                        = 0
mkdir("./19617", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20455 attached
 <unfinished ...>
[pid 20455] set_robust_list(0x5555589fe660, 24 <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20455
[pid 20455] <... set_robust_list resumed>) = 0
[pid 20455] chdir("./19617")            = 0
[pid 20455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20455] setpgid(0, 0)               = 0
[pid 20455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20455] write(3, "1000", 4)         = 4
[pid 20455] close(3)                    = 0
[pid 20455] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20455] write(1, "executing program\n", 18executing program
) = 18
[pid 20455] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20455] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20455] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20455] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20455] exit_group(0)               = ?
[pid 20455] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20455, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19617", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19617", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19617/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19617/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19617/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19617")                        = 0
mkdir("./19618", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20456 attached
 <unfinished ...>
[pid 20456] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20456
[pid 20456] chdir("./19618")            = 0
[pid 20456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20456] setpgid(0, 0)               = 0
[pid 20456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20456] write(3, "1000", 4)         = 4
[pid 20456] close(3)                    = 0
[pid 20456] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20456] write(1, "executing program\n", 18) = 18
[pid 20456] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20456] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20456] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20456] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20456] exit_group(0)               = ?
[pid 20456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19618", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19618", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19618/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19618/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19618/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19618")                        = 0
mkdir("./19619", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20457
./strace-static-x86_64: Process 20457 attached
[pid 20457] set_robust_list(0x5555589fe660, 24) = 0
[pid 20457] chdir("./19619")            = 0
[pid 20457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20457] setpgid(0, 0)               = 0
[pid 20457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20457] write(3, "1000", 4)         = 4
[pid 20457] close(3)                    = 0
[pid 20457] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20457] write(1, "executing program\n", 18executing program
) = 18
[pid 20457] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20457] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20457] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20457] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20457] exit_group(0)               = ?
[pid 20457] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20457, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19619", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19619", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19619/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19619/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19619/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19619")                        = 0
mkdir("./19620", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20458
./strace-static-x86_64: Process 20458 attached
[pid 20458] set_robust_list(0x5555589fe660, 24) = 0
[pid 20458] chdir("./19620")            = 0
[pid 20458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20458] setpgid(0, 0)               = 0
[pid 20458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20458] write(3, "1000", 4)         = 4
[pid 20458] close(3)                    = 0
[pid 20458] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20458] write(1, "executing program\n", 18executing program
) = 18
[pid 20458] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20458] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20458] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20458] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20458] exit_group(0)               = ?
[pid 20458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19620", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19620", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19620/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19620/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19620/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19620")                        = 0
mkdir("./19621", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20459
./strace-static-x86_64: Process 20459 attached
[pid 20459] set_robust_list(0x5555589fe660, 24) = 0
[pid 20459] chdir("./19621")            = 0
[pid 20459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20459] setpgid(0, 0)               = 0
[pid 20459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20459] write(3, "1000", 4)         = 4
[pid 20459] close(3)                    = 0
[pid 20459] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20459] write(1, "executing program\n", 18) = 18
[pid 20459] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20459] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20459] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20459] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20459] exit_group(0)               = ?
[pid 20459] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20459, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19621", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19621", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19621/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19621/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19621/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19621")                        = 0
mkdir("./19622", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20460 attached
, child_tidptr=0x5555589fe650) = 20460
[pid 20460] set_robust_list(0x5555589fe660, 24) = 0
[pid 20460] chdir("./19622")            = 0
[pid 20460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20460] setpgid(0, 0)               = 0
[pid 20460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20460] write(3, "1000", 4)         = 4
[pid 20460] close(3)                    = 0
[pid 20460] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20460] write(1, "executing program\n", 18executing program
) = 18
[pid 20460] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20460] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20460] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20460] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20460] exit_group(0)               = ?
[pid 20460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20460, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19622", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19622", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19622/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19622/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19622/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19622")                        = 0
mkdir("./19623", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20461
./strace-static-x86_64: Process 20461 attached
[pid 20461] set_robust_list(0x5555589fe660, 24) = 0
[pid 20461] chdir("./19623")            = 0
[pid 20461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20461] setpgid(0, 0)               = 0
[pid 20461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20461] write(3, "1000", 4)         = 4
[pid 20461] close(3)                    = 0
[pid 20461] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20461] write(1, "executing program\n", 18executing program
) = 18
[pid 20461] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20461] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20461] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20461] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20461] exit_group(0)               = ?
[pid 20461] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20461, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19623", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19623", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19623/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19623/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19623/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19623")                        = 0
mkdir("./19624", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20462 attached
 <unfinished ...>
[pid 20462] set_robust_list(0x5555589fe660, 24) = 0
[pid 20462] chdir("./19624")            = 0
[pid 20462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20462] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20462
[pid 20462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20462] write(3, "1000", 4)         = 4
[pid 20462] close(3)                    = 0
[pid 20462] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20462] write(1, "executing program\n", 18executing program
) = 18
[pid 20462] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20462] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20462] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20462] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20462] exit_group(0)               = ?
[pid 20462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19624", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19624", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19624/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19624/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19624/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19624")                        = 0
mkdir("./19625", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20463
./strace-static-x86_64: Process 20463 attached
[pid 20463] set_robust_list(0x5555589fe660, 24) = 0
[pid 20463] chdir("./19625")            = 0
[pid 20463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20463] setpgid(0, 0)               = 0
[pid 20463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20463] write(3, "1000", 4)         = 4
[pid 20463] close(3)                    = 0
[pid 20463] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20463] write(1, "executing program\n", 18) = 18
[pid 20463] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20463] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20463] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20463] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20463] exit_group(0)               = ?
[pid 20463] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20463, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19625", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19625", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19625/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19625/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19625/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19625")                        = 0
mkdir("./19626", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20464 attached
, child_tidptr=0x5555589fe650) = 20464
[pid 20464] set_robust_list(0x5555589fe660, 24) = 0
[pid 20464] chdir("./19626")            = 0
[pid 20464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20464] setpgid(0, 0)               = 0
[pid 20464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20464] write(3, "1000", 4)         = 4
[pid 20464] close(3)                    = 0
[pid 20464] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20464] write(1, "executing program\n", 18executing program
) = 18
[pid 20464] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20464] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20464] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20464] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20464] exit_group(0)               = ?
[pid 20464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19626", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19626", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19626/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19626/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19626/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19626")                        = 0
mkdir("./19627", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20465
./strace-static-x86_64: Process 20465 attached
[pid 20465] set_robust_list(0x5555589fe660, 24) = 0
[pid 20465] chdir("./19627")            = 0
[pid 20465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20465] setpgid(0, 0)               = 0
[pid 20465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20465] write(3, "1000", 4)         = 4
[pid 20465] close(3)                    = 0
[pid 20465] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20465] write(1, "executing program\n", 18) = 18
[pid 20465] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20465] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20465] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20465] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20465] exit_group(0)               = ?
[pid 20465] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20465, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19627", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19627", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19627/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19627/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19627/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19627")                        = 0
mkdir("./19628", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20466 attached
, child_tidptr=0x5555589fe650) = 20466
[pid 20466] set_robust_list(0x5555589fe660, 24) = 0
[pid 20466] chdir("./19628")            = 0
[pid 20466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20466] setpgid(0, 0)               = 0
[pid 20466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20466] write(3, "1000", 4)         = 4
[pid 20466] close(3)                    = 0
[pid 20466] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20466] write(1, "executing program\n", 18executing program
) = 18
[pid 20466] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20466] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20466] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20466] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20466] exit_group(0)               = ?
[pid 20466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19628", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19628", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19628/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19628/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19628/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19628")                        = 0
mkdir("./19629", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20467
./strace-static-x86_64: Process 20467 attached
[pid 20467] set_robust_list(0x5555589fe660, 24) = 0
[pid 20467] chdir("./19629")            = 0
[pid 20467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20467] setpgid(0, 0)               = 0
[pid 20467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20467] write(3, "1000", 4)         = 4
[pid 20467] close(3)                    = 0
[pid 20467] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20467] write(1, "executing program\n", 18executing program
) = 18
[pid 20467] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20467] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20467] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20467] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20467] exit_group(0)               = ?
[pid 20467] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20467, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19629", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19629", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19629/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19629/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19629/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19629")                        = 0
mkdir("./19630", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20468
./strace-static-x86_64: Process 20468 attached
[pid 20468] set_robust_list(0x5555589fe660, 24) = 0
[pid 20468] chdir("./19630")            = 0
[pid 20468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20468] setpgid(0, 0)               = 0
[pid 20468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20468] write(3, "1000", 4)         = 4
[pid 20468] close(3)                    = 0
[pid 20468] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20468] write(1, "executing program\n", 18) = 18
[pid 20468] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20468] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20468] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20468] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20468] exit_group(0)               = ?
[pid 20468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19630", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19630", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19630/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19630/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19630/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19630")                        = 0
mkdir("./19631", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20469
./strace-static-x86_64: Process 20469 attached
[pid 20469] set_robust_list(0x5555589fe660, 24) = 0
[pid 20469] chdir("./19631")            = 0
[pid 20469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20469] setpgid(0, 0)               = 0
[pid 20469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20469] write(3, "1000", 4)         = 4
[pid 20469] close(3)                    = 0
[pid 20469] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20469] write(1, "executing program\n", 18) = 18
[pid 20469] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20469] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20469] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20469] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20469] exit_group(0)               = ?
[pid 20469] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20469, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19631", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19631", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19631/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19631/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19631/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19631")                        = 0
mkdir("./19632", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20470
./strace-static-x86_64: Process 20470 attached
[pid 20470] set_robust_list(0x5555589fe660, 24) = 0
[pid 20470] chdir("./19632")            = 0
[pid 20470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20470] setpgid(0, 0)               = 0
[pid 20470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20470] write(3, "1000", 4)         = 4
[pid 20470] close(3)                    = 0
[pid 20470] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20470] write(1, "executing program\n", 18executing program
) = 18
[pid 20470] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20470] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20470] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20470] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20470] exit_group(0)               = ?
[pid 20470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19632", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19632", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19632/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19632/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19632/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19632")                        = 0
mkdir("./19633", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20471
./strace-static-x86_64: Process 20471 attached
[pid 20471] set_robust_list(0x5555589fe660, 24) = 0
[pid 20471] chdir("./19633")            = 0
[pid 20471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20471] setpgid(0, 0)               = 0
[pid 20471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20471] write(3, "1000", 4)         = 4
[pid 20471] close(3)                    = 0
[pid 20471] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20471] write(1, "executing program\n", 18) = 18
[pid 20471] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20471] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20471] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20471] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20471] exit_group(0)               = ?
[pid 20471] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20471, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19633", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19633", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19633/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19633/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19633/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19633")                        = 0
mkdir("./19634", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20472
./strace-static-x86_64: Process 20472 attached
[pid 20472] set_robust_list(0x5555589fe660, 24) = 0
[pid 20472] chdir("./19634")            = 0
[pid 20472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20472] setpgid(0, 0)               = 0
[pid 20472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20472] write(3, "1000", 4)         = 4
[pid 20472] close(3)                    = 0
[pid 20472] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20472] write(1, "executing program\n", 18) = 18
[pid 20472] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20472] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20472] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20472] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20472] exit_group(0)               = ?
[pid 20472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19634", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19634", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19634/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19634/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19634/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19634")                        = 0
mkdir("./19635", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20473 attached
, child_tidptr=0x5555589fe650) = 20473
[pid 20473] set_robust_list(0x5555589fe660, 24) = 0
[pid 20473] chdir("./19635")            = 0
[pid 20473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20473] setpgid(0, 0)               = 0
[pid 20473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20473] write(3, "1000", 4)         = 4
[pid 20473] close(3)                    = 0
[pid 20473] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20473] write(1, "executing program\n", 18executing program
) = 18
[pid 20473] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20473] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20473] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20473] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20473] exit_group(0)               = ?
[pid 20473] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20473, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19635", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19635", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19635/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19635/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19635/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19635")                        = 0
mkdir("./19636", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20475 attached
, child_tidptr=0x5555589fe650) = 20475
[pid 20475] set_robust_list(0x5555589fe660, 24) = 0
[pid 20475] chdir("./19636")            = 0
[pid 20475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20475] setpgid(0, 0)               = 0
[pid 20475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20475] write(3, "1000", 4)         = 4
[pid 20475] close(3)                    = 0
[pid 20475] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20475] write(1, "executing program\n", 18) = 18
[pid 20475] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20475] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20475] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20475] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20475] exit_group(0)               = ?
[pid 20475] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20475, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19636", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19636", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19636/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19636/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19636/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19636")                        = 0
mkdir("./19637", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20476 attached
, child_tidptr=0x5555589fe650) = 20476
[pid 20476] set_robust_list(0x5555589fe660, 24) = 0
[pid 20476] chdir("./19637")            = 0
[pid 20476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20476] setpgid(0, 0)               = 0
[pid 20476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20476] write(3, "1000", 4)         = 4
[pid 20476] close(3)                    = 0
[pid 20476] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20476] write(1, "executing program\n", 18) = 18
[pid 20476] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20476] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20476] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20476] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20476] exit_group(0)               = ?
[pid 20476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19637", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19637", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19637/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19637/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19637/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19637")                        = 0
mkdir("./19638", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20477 attached
, child_tidptr=0x5555589fe650) = 20477
[pid 20477] set_robust_list(0x5555589fe660, 24) = 0
[pid 20477] chdir("./19638")            = 0
[pid 20477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20477] setpgid(0, 0)               = 0
[pid 20477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20477] write(3, "1000", 4)         = 4
[pid 20477] close(3)                    = 0
[pid 20477] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20477] write(1, "executing program\n", 18executing program
) = 18
[pid 20477] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20477] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20477] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20477] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20477] exit_group(0)               = ?
[pid 20477] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20477, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19638", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19638", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19638/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19638/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19638/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19638")                        = 0
mkdir("./19639", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20478
./strace-static-x86_64: Process 20478 attached
[pid 20478] set_robust_list(0x5555589fe660, 24) = 0
[pid 20478] chdir("./19639")            = 0
[pid 20478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20478] setpgid(0, 0)               = 0
[pid 20478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20478] write(3, "1000", 4)         = 4
[pid 20478] close(3)                    = 0
[pid 20478] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20478] write(1, "executing program\n", 18) = 18
[pid 20478] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20478] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20478] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20478] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20478] exit_group(0)               = ?
[pid 20478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20478, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19639", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19639", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19639/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19639/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19639/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19639")                        = 0
mkdir("./19640", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20479
./strace-static-x86_64: Process 20479 attached
[pid 20479] set_robust_list(0x5555589fe660, 24) = 0
[pid 20479] chdir("./19640")            = 0
[pid 20479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20479] setpgid(0, 0)               = 0
[pid 20479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20479] write(3, "1000", 4)         = 4
[pid 20479] close(3)                    = 0
[pid 20479] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20479] write(1, "executing program\n", 18) = 18
[pid 20479] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20479] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20479] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20479] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20479] exit_group(0)               = ?
[pid 20479] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20479, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19640", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19640", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19640/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19640/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19640/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19640")                        = 0
mkdir("./19641", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20480
./strace-static-x86_64: Process 20480 attached
[pid 20480] set_robust_list(0x5555589fe660, 24) = 0
[pid 20480] chdir("./19641")            = 0
[pid 20480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20480] setpgid(0, 0)               = 0
[pid 20480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20480] write(3, "1000", 4)         = 4
[pid 20480] close(3)                    = 0
[pid 20480] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20480] write(1, "executing program\n", 18) = 18
[pid 20480] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20480] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20480] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20480] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20480] exit_group(0)               = ?
[pid 20480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19641", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19641", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19641/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19641/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19641/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19641")                        = 0
mkdir("./19642", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20481
./strace-static-x86_64: Process 20481 attached
[pid 20481] set_robust_list(0x5555589fe660, 24) = 0
[pid 20481] chdir("./19642")            = 0
[pid 20481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20481] setpgid(0, 0)               = 0
[pid 20481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20481] write(3, "1000", 4)         = 4
[pid 20481] close(3)                    = 0
[pid 20481] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20481] write(1, "executing program\n", 18) = 18
[pid 20481] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20481] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20481] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20481] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20481] exit_group(0)               = ?
[pid 20481] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20481, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19642", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19642", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19642/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19642/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19642/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19642")                        = 0
mkdir("./19643", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20482
./strace-static-x86_64: Process 20482 attached
[pid 20482] set_robust_list(0x5555589fe660, 24) = 0
[pid 20482] chdir("./19643")            = 0
[pid 20482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20482] setpgid(0, 0)               = 0
[pid 20482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20482] write(3, "1000", 4)         = 4
[pid 20482] close(3)                    = 0
[pid 20482] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20482] write(1, "executing program\n", 18executing program
) = 18
[pid 20482] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20482] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20482] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20482] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20482] exit_group(0)               = ?
[pid 20482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19643", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19643", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19643/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19643/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19643/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19643")                        = 0
mkdir("./19644", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20483
./strace-static-x86_64: Process 20483 attached
[pid 20483] set_robust_list(0x5555589fe660, 24) = 0
[pid 20483] chdir("./19644")            = 0
[pid 20483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20483] setpgid(0, 0)               = 0
[pid 20483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20483] write(3, "1000", 4)         = 4
[pid 20483] close(3)                    = 0
[pid 20483] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20483] write(1, "executing program\n", 18executing program
) = 18
[pid 20483] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20483] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20483] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20483] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20483] exit_group(0)               = ?
[pid 20483] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20483, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19644", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19644", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19644/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19644/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19644/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19644")                        = 0
mkdir("./19645", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20484
./strace-static-x86_64: Process 20484 attached
[pid 20484] set_robust_list(0x5555589fe660, 24) = 0
[pid 20484] chdir("./19645")            = 0
[pid 20484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20484] setpgid(0, 0)               = 0
[pid 20484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20484] write(3, "1000", 4)         = 4
[pid 20484] close(3)                    = 0
[pid 20484] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20484] write(1, "executing program\n", 18executing program
) = 18
[pid 20484] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20484] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20484] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20484] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20484] exit_group(0)               = ?
[pid 20484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19645", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19645", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19645/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19645/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19645/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19645")                        = 0
mkdir("./19646", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20485
./strace-static-x86_64: Process 20485 attached
[pid 20485] set_robust_list(0x5555589fe660, 24) = 0
[pid 20485] chdir("./19646")            = 0
[pid 20485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20485] setpgid(0, 0)               = 0
[pid 20485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20485] write(3, "1000", 4)         = 4
[pid 20485] close(3)                    = 0
[pid 20485] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20485] write(1, "executing program\n", 18executing program
) = 18
[pid 20485] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20485] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20485] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20485] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20485] exit_group(0)               = ?
[pid 20485] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20485, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19646", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19646", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19646/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19646/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19646/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19646")                        = 0
mkdir("./19647", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20486
./strace-static-x86_64: Process 20486 attached
[pid 20486] set_robust_list(0x5555589fe660, 24) = 0
[pid 20486] chdir("./19647")            = 0
[pid 20486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20486] setpgid(0, 0)               = 0
[pid 20486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20486] write(3, "1000", 4)         = 4
[pid 20486] close(3)                    = 0
[pid 20486] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20486] write(1, "executing program\n", 18executing program
) = 18
[pid 20486] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20486] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20486] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20486] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20486] exit_group(0)               = ?
[pid 20486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19647", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19647", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19647/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19647/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19647/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19647")                        = 0
mkdir("./19648", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20487
./strace-static-x86_64: Process 20487 attached
[pid 20487] set_robust_list(0x5555589fe660, 24) = 0
[pid 20487] chdir("./19648")            = 0
[pid 20487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20487] setpgid(0, 0)               = 0
[pid 20487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20487] write(3, "1000", 4)         = 4
[pid 20487] close(3)                    = 0
[pid 20487] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20487] write(1, "executing program\n", 18executing program
) = 18
[pid 20487] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20487] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20487] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20487] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20487] exit_group(0)               = ?
[pid 20487] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20487, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19648", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19648", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19648/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19648/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19648/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19648")                        = 0
mkdir("./19649", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20488
./strace-static-x86_64: Process 20488 attached
[pid 20488] set_robust_list(0x5555589fe660, 24) = 0
[pid 20488] chdir("./19649")            = 0
[pid 20488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20488] setpgid(0, 0)               = 0
[pid 20488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20488] write(3, "1000", 4)         = 4
[pid 20488] close(3)                    = 0
[pid 20488] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20488] write(1, "executing program\n", 18executing program
) = 18
[pid 20488] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20488] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20488] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20488] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20488] exit_group(0)               = ?
[pid 20488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19649", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19649", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19649/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19649/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19649/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19649")                        = 0
mkdir("./19650", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20489 attached
, child_tidptr=0x5555589fe650) = 20489
[pid 20489] set_robust_list(0x5555589fe660, 24) = 0
[pid 20489] chdir("./19650")            = 0
[pid 20489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20489] setpgid(0, 0)               = 0
[pid 20489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20489] write(3, "1000", 4)         = 4
[pid 20489] close(3)                    = 0
[pid 20489] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20489] write(1, "executing program\n", 18executing program
) = 18
[pid 20489] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20489] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20489] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20489] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20489] exit_group(0)               = ?
[pid 20489] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20489, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19650", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19650", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19650/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19650/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19650/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19650")                        = 0
mkdir("./19651", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20490 attached
, child_tidptr=0x5555589fe650) = 20490
[pid 20490] set_robust_list(0x5555589fe660, 24) = 0
[pid 20490] chdir("./19651")            = 0
[pid 20490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20490] setpgid(0, 0)               = 0
[pid 20490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20490] write(3, "1000", 4)         = 4
[pid 20490] close(3)                    = 0
[pid 20490] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20490] write(1, "executing program\n", 18executing program
) = 18
[pid 20490] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20490] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20490] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20490] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20490] exit_group(0)               = ?
[pid 20490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19651", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19651", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19651/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19651/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19651/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19651")                        = 0
mkdir("./19652", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20491 attached
, child_tidptr=0x5555589fe650) = 20491
[pid 20491] set_robust_list(0x5555589fe660, 24) = 0
[pid 20491] chdir("./19652")            = 0
[pid 20491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20491] setpgid(0, 0)               = 0
[pid 20491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20491] write(3, "1000", 4)         = 4
[pid 20491] close(3)                    = 0
[pid 20491] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20491] write(1, "executing program\n", 18executing program
) = 18
[pid 20491] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20491] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20491] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20491] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20491] exit_group(0)               = ?
[pid 20491] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20491, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19652", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19652", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19652/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19652/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19652/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19652")                        = 0
mkdir("./19653", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20492
./strace-static-x86_64: Process 20492 attached
[pid 20492] set_robust_list(0x5555589fe660, 24) = 0
[pid 20492] chdir("./19653")            = 0
[pid 20492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20492] setpgid(0, 0)               = 0
[pid 20492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20492] write(3, "1000", 4)         = 4
[pid 20492] close(3)                    = 0
[pid 20492] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20492] write(1, "executing program\n", 18executing program
) = 18
[pid 20492] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20492] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20492] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20492] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20492] exit_group(0)               = ?
[pid 20492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19653", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19653", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19653/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19653/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19653/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19653")                        = 0
mkdir("./19654", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20493 attached
, child_tidptr=0x5555589fe650) = 20493
[pid 20493] set_robust_list(0x5555589fe660, 24) = 0
[pid 20493] chdir("./19654")            = 0
[pid 20493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20493] setpgid(0, 0)               = 0
[pid 20493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20493] write(3, "1000", 4)         = 4
[pid 20493] close(3)                    = 0
[pid 20493] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20493] write(1, "executing program\n", 18) = 18
[pid 20493] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20493] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20493] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20493] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20493] exit_group(0)               = ?
[pid 20493] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20493, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19654", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19654", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19654/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19654/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19654/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19654")                        = 0
mkdir("./19655", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20494
./strace-static-x86_64: Process 20494 attached
[pid 20494] set_robust_list(0x5555589fe660, 24) = 0
[pid 20494] chdir("./19655")            = 0
[pid 20494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20494] setpgid(0, 0)               = 0
[pid 20494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20494] write(3, "1000", 4)         = 4
[pid 20494] close(3)                    = 0
[pid 20494] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20494] write(1, "executing program\n", 18) = 18
[pid 20494] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20494] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20494] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20494] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20494] exit_group(0)               = ?
[pid 20494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19655", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19655", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19655/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19655/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19655/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19655")                        = 0
mkdir("./19656", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20495
./strace-static-x86_64: Process 20495 attached
[pid 20495] set_robust_list(0x5555589fe660, 24) = 0
[pid 20495] chdir("./19656")            = 0
[pid 20495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20495] setpgid(0, 0)               = 0
[pid 20495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20495] write(3, "1000", 4)         = 4
[pid 20495] close(3)                    = 0
[pid 20495] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20495] write(1, "executing program\n", 18executing program
) = 18
[pid 20495] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20495] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20495] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20495] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20495] exit_group(0)               = ?
[pid 20495] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20495, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19656", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19656", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19656/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19656/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19656/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19656")                        = 0
mkdir("./19657", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20496
./strace-static-x86_64: Process 20496 attached
[pid 20496] set_robust_list(0x5555589fe660, 24) = 0
[pid 20496] chdir("./19657")            = 0
[pid 20496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20496] setpgid(0, 0)               = 0
[pid 20496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20496] write(3, "1000", 4)         = 4
[pid 20496] close(3)                    = 0
[pid 20496] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20496] write(1, "executing program\n", 18executing program
) = 18
[pid 20496] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20496] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20496] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20496] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20496] exit_group(0)               = ?
[pid 20496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19657", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19657", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19657/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19657/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19657/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19657")                        = 0
mkdir("./19658", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20497 attached
, child_tidptr=0x5555589fe650) = 20497
[pid 20497] set_robust_list(0x5555589fe660, 24) = 0
[pid 20497] chdir("./19658")            = 0
[pid 20497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20497] setpgid(0, 0)               = 0
[pid 20497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20497] write(3, "1000", 4)         = 4
[pid 20497] close(3)                    = 0
[pid 20497] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20497] write(1, "executing program\n", 18) = 18
[pid 20497] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20497] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20497] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20497] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20497] exit_group(0)               = ?
[pid 20497] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20497, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19658", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19658", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19658/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19658/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19658/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19658")                        = 0
mkdir("./19659", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20498 attached
, child_tidptr=0x5555589fe650) = 20498
[pid 20498] set_robust_list(0x5555589fe660, 24) = 0
[pid 20498] chdir("./19659")            = 0
[pid 20498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20498] setpgid(0, 0)               = 0
[pid 20498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20498] write(3, "1000", 4)         = 4
[pid 20498] close(3)                    = 0
[pid 20498] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20498] write(1, "executing program\n", 18) = 18
[pid 20498] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20498] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20498] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20498] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20498] exit_group(0)               = ?
[pid 20498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20498, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19659", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19659", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19659/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19659/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19659/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19659")                        = 0
mkdir("./19660", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20499 attached
, child_tidptr=0x5555589fe650) = 20499
[pid 20499] set_robust_list(0x5555589fe660, 24) = 0
[pid 20499] chdir("./19660")            = 0
[pid 20499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20499] setpgid(0, 0)               = 0
[pid 20499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20499] write(3, "1000", 4)         = 4
[pid 20499] close(3)                    = 0
[pid 20499] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20499] write(1, "executing program\n", 18executing program
) = 18
[pid 20499] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20499] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20499] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20499] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20499] exit_group(0)               = ?
[pid 20499] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20499, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19660", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19660", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19660/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19660/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19660/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19660")                        = 0
mkdir("./19661", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20500
./strace-static-x86_64: Process 20500 attached
[pid 20500] set_robust_list(0x5555589fe660, 24) = 0
[pid 20500] chdir("./19661")            = 0
[pid 20500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20500] setpgid(0, 0)               = 0
[pid 20500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20500] write(3, "1000", 4)         = 4
[pid 20500] close(3)                    = 0
[pid 20500] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20500] write(1, "executing program\n", 18executing program
) = 18
[pid 20500] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20500] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20500] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20500] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20500] exit_group(0)               = ?
[pid 20500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19661", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19661", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19661/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19661/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19661/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19661")                        = 0
mkdir("./19662", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20501
./strace-static-x86_64: Process 20501 attached
[pid 20501] set_robust_list(0x5555589fe660, 24) = 0
[pid 20501] chdir("./19662")            = 0
[pid 20501] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20501] setpgid(0, 0)               = 0
[pid 20501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20501] write(3, "1000", 4)         = 4
[pid 20501] close(3)                    = 0
[pid 20501] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20501] write(1, "executing program\n", 18executing program
) = 18
[pid 20501] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20501] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20501] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20501] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20501] exit_group(0)               = ?
[pid 20501] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20501, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19662", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19662", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19662/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19662/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19662/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19662")                        = 0
mkdir("./19663", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20502
./strace-static-x86_64: Process 20502 attached
[pid 20502] set_robust_list(0x5555589fe660, 24) = 0
[pid 20502] chdir("./19663")            = 0
[pid 20502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20502] setpgid(0, 0)               = 0
[pid 20502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20502] write(3, "1000", 4)         = 4
[pid 20502] close(3)                    = 0
[pid 20502] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20502] write(1, "executing program\n", 18executing program
) = 18
[pid 20502] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20502] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20502] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20502] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20502] exit_group(0)               = ?
[pid 20502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19663", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19663", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19663/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19663/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19663/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19663")                        = 0
mkdir("./19664", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20503
./strace-static-x86_64: Process 20503 attached
[pid 20503] set_robust_list(0x5555589fe660, 24) = 0
[pid 20503] chdir("./19664")            = 0
[pid 20503] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20503] setpgid(0, 0)               = 0
[pid 20503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20503] write(3, "1000", 4)         = 4
[pid 20503] close(3)                    = 0
[pid 20503] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20503] write(1, "executing program\n", 18executing program
) = 18
[pid 20503] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20503] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20503] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20503] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20503] exit_group(0)               = ?
[pid 20503] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20503, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19664", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19664", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19664/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19664/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19664/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19664")                        = 0
mkdir("./19665", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20504
./strace-static-x86_64: Process 20504 attached
[pid 20504] set_robust_list(0x5555589fe660, 24) = 0
[pid 20504] chdir("./19665")            = 0
[pid 20504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20504] setpgid(0, 0)               = 0
[pid 20504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20504] write(3, "1000", 4)         = 4
[pid 20504] close(3)                    = 0
[pid 20504] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20504] write(1, "executing program\n", 18executing program
) = 18
[pid 20504] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20504] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20504] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20504] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20504] exit_group(0)               = ?
[pid 20504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19665", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19665", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19665/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19665/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19665/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19665")                        = 0
mkdir("./19666", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20505
./strace-static-x86_64: Process 20505 attached
[pid 20505] set_robust_list(0x5555589fe660, 24) = 0
[pid 20505] chdir("./19666")            = 0
[pid 20505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20505] setpgid(0, 0)               = 0
[pid 20505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20505] write(3, "1000", 4)         = 4
[pid 20505] close(3)                    = 0
[pid 20505] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20505] write(1, "executing program\n", 18executing program
) = 18
[pid 20505] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20505] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20505] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20505] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20505] exit_group(0)               = ?
[pid 20505] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20505, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19666", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19666", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19666/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19666/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19666/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19666")                        = 0
mkdir("./19667", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20506
./strace-static-x86_64: Process 20506 attached
[pid 20506] set_robust_list(0x5555589fe660, 24) = 0
[pid 20506] chdir("./19667")            = 0
[pid 20506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20506] setpgid(0, 0)               = 0
[pid 20506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20506] write(3, "1000", 4)         = 4
[pid 20506] close(3)                    = 0
[pid 20506] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20506] write(1, "executing program\n", 18executing program
) = 18
[pid 20506] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20506] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20506] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20506] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20506] exit_group(0)               = ?
[pid 20506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19667", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19667", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19667/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19667/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19667/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19667")                        = 0
mkdir("./19668", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20507
./strace-static-x86_64: Process 20507 attached
[pid 20507] set_robust_list(0x5555589fe660, 24) = 0
[pid 20507] chdir("./19668")            = 0
[pid 20507] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20507] setpgid(0, 0)               = 0
[pid 20507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20507] write(3, "1000", 4)         = 4
[pid 20507] close(3)                    = 0
[pid 20507] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20507] write(1, "executing program\n", 18executing program
) = 18
[pid 20507] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20507] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20507] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20507] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20507] exit_group(0)               = ?
[pid 20507] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20507, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19668", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19668", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19668/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19668/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19668/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19668")                        = 0
mkdir("./19669", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20508
./strace-static-x86_64: Process 20508 attached
[pid 20508] set_robust_list(0x5555589fe660, 24) = 0
[pid 20508] chdir("./19669")            = 0
[pid 20508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20508] setpgid(0, 0)               = 0
[pid 20508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20508] write(3, "1000", 4)         = 4
[pid 20508] close(3)                    = 0
[pid 20508] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20508] write(1, "executing program\n", 18executing program
) = 18
[pid 20508] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20508] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20508] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20508] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20508] exit_group(0)               = ?
[pid 20508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19669", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19669", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19669/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19669/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19669/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19669")                        = 0
mkdir("./19670", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20509
./strace-static-x86_64: Process 20509 attached
[pid 20509] set_robust_list(0x5555589fe660, 24) = 0
[pid 20509] chdir("./19670")            = 0
[pid 20509] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20509] setpgid(0, 0)               = 0
[pid 20509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20509] write(3, "1000", 4)         = 4
[pid 20509] close(3)                    = 0
[pid 20509] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20509] write(1, "executing program\n", 18executing program
) = 18
[pid 20509] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20509] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20509] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20509] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20509] exit_group(0)               = ?
[pid 20509] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20509, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19670", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19670", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19670/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19670/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19670/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19670")                        = 0
mkdir("./19671", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20510
./strace-static-x86_64: Process 20510 attached
[pid 20510] set_robust_list(0x5555589fe660, 24) = 0
[pid 20510] chdir("./19671")            = 0
[pid 20510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20510] setpgid(0, 0)               = 0
[pid 20510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20510] write(3, "1000", 4)         = 4
[pid 20510] close(3)                    = 0
[pid 20510] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20510] write(1, "executing program\n", 18executing program
) = 18
[pid 20510] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20510] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20510] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20510] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20510] exit_group(0)               = ?
[pid 20510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19671", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19671", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19671/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19671/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19671/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19671")                        = 0
mkdir("./19672", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20511
./strace-static-x86_64: Process 20511 attached
[pid 20511] set_robust_list(0x5555589fe660, 24) = 0
[pid 20511] chdir("./19672")            = 0
[pid 20511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20511] setpgid(0, 0)               = 0
[pid 20511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20511] write(3, "1000", 4)         = 4
[pid 20511] close(3)                    = 0
[pid 20511] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20511] write(1, "executing program\n", 18executing program
) = 18
[pid 20511] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20511] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20511] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20511] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20511] exit_group(0)               = ?
[pid 20511] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20511, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19672", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19672", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19672/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19672/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19672/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19672")                        = 0
mkdir("./19673", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20512
./strace-static-x86_64: Process 20512 attached
[pid 20512] set_robust_list(0x5555589fe660, 24) = 0
[pid 20512] chdir("./19673")            = 0
[pid 20512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20512] setpgid(0, 0)               = 0
[pid 20512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20512] write(3, "1000", 4)         = 4
[pid 20512] close(3)                    = 0
[pid 20512] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20512] write(1, "executing program\n", 18executing program
) = 18
[pid 20512] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20512] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20512] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20512] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20512] exit_group(0)               = ?
[pid 20512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19673", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19673", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19673/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19673/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19673/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19673")                        = 0
mkdir("./19674", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20513
./strace-static-x86_64: Process 20513 attached
[pid 20513] set_robust_list(0x5555589fe660, 24) = 0
[pid 20513] chdir("./19674")            = 0
[pid 20513] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20513] setpgid(0, 0)               = 0
[pid 20513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20513] write(3, "1000", 4)         = 4
[pid 20513] close(3)                    = 0
[pid 20513] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20513] write(1, "executing program\n", 18) = 18
[pid 20513] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20513] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20513] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20513] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20513] exit_group(0)               = ?
[pid 20513] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20513, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19674", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19674", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19674/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19674/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19674/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19674")                        = 0
mkdir("./19675", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20514
./strace-static-x86_64: Process 20514 attached
[pid 20514] set_robust_list(0x5555589fe660, 24) = 0
[pid 20514] chdir("./19675")            = 0
[pid 20514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20514] setpgid(0, 0)               = 0
[pid 20514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20514] write(3, "1000", 4)         = 4
[pid 20514] close(3)                    = 0
[pid 20514] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20514] write(1, "executing program\n", 18executing program
) = 18
[pid 20514] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20514] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20514] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20514] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20514] exit_group(0)               = ?
[pid 20514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19675", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19675", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19675/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19675/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19675/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19675")                        = 0
mkdir("./19676", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20515 attached
 <unfinished ...>
[pid 20515] set_robust_list(0x5555589fe660, 24) = 0
[pid 20515] chdir("./19676" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20515
[pid 20515] <... chdir resumed>)        = 0
[pid 20515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20515] setpgid(0, 0)               = 0
[pid 20515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20515] write(3, "1000", 4)         = 4
[pid 20515] close(3)                    = 0
[pid 20515] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20515] write(1, "executing program\n", 18executing program
) = 18
[pid 20515] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20515] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20515] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20515] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20515] exit_group(0)               = ?
[pid 20515] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20515, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19676", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19676", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19676/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19676/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19676/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19676")                        = 0
mkdir("./19677", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20516
./strace-static-x86_64: Process 20516 attached
[pid 20516] set_robust_list(0x5555589fe660, 24) = 0
[pid 20516] chdir("./19677")            = 0
[pid 20516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20516] setpgid(0, 0)               = 0
[pid 20516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20516] write(3, "1000", 4)         = 4
[pid 20516] close(3)                    = 0
[pid 20516] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20516] write(1, "executing program\n", 18executing program
) = 18
[pid 20516] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20516] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20516] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20516] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20516] exit_group(0)               = ?
[pid 20516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19677", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19677", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19677/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19677/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19677/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19677")                        = 0
mkdir("./19678", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20517
./strace-static-x86_64: Process 20517 attached
[pid 20517] set_robust_list(0x5555589fe660, 24) = 0
[pid 20517] chdir("./19678")            = 0
[pid 20517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20517] setpgid(0, 0)               = 0
[pid 20517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20517] write(3, "1000", 4)         = 4
[pid 20517] close(3)                    = 0
[pid 20517] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20517] write(1, "executing program\n", 18executing program
) = 18
[pid 20517] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20517] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20517] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20517] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20517] exit_group(0)               = ?
[pid 20517] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20517, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19678", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19678", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19678/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19678/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19678/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19678")                        = 0
mkdir("./19679", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20518
./strace-static-x86_64: Process 20518 attached
[pid 20518] set_robust_list(0x5555589fe660, 24) = 0
[pid 20518] chdir("./19679")            = 0
[pid 20518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20518] setpgid(0, 0)               = 0
[pid 20518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20518] write(3, "1000", 4)         = 4
[pid 20518] close(3)                    = 0
[pid 20518] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20518] write(1, "executing program\n", 18executing program
) = 18
[pid 20518] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20518] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20518] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20518] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20518] exit_group(0)               = ?
[pid 20518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19679", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19679", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19679/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19679/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19679/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19679")                        = 0
mkdir("./19680", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20519
./strace-static-x86_64: Process 20519 attached
[pid 20519] set_robust_list(0x5555589fe660, 24) = 0
[pid 20519] chdir("./19680")            = 0
[pid 20519] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20519] setpgid(0, 0)               = 0
[pid 20519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20519] write(3, "1000", 4)         = 4
[pid 20519] close(3)                    = 0
[pid 20519] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20519] write(1, "executing program\n", 18) = 18
[pid 20519] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20519] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20519] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20519] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20519] exit_group(0)               = ?
[pid 20519] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20519, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19680", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19680", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19680/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19680/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19680/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19680")                        = 0
mkdir("./19681", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20520 attached
, child_tidptr=0x5555589fe650) = 20520
[pid 20520] set_robust_list(0x5555589fe660, 24) = 0
[pid 20520] chdir("./19681")            = 0
[pid 20520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20520] setpgid(0, 0)               = 0
[pid 20520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20520] write(3, "1000", 4)         = 4
[pid 20520] close(3)                    = 0
[pid 20520] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20520] write(1, "executing program\n", 18executing program
) = 18
[pid 20520] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20520] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20520] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20520] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20520] exit_group(0)               = ?
[pid 20520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19681", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19681", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19681/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19681/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19681/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19681")                        = 0
mkdir("./19682", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20521 attached
 <unfinished ...>
[pid 20521] set_robust_list(0x5555589fe660, 24) = 0
[pid 20521] chdir("./19682")            = 0
[pid 20521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20521] setpgid(0, 0)               = 0
[pid 20521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20521
[pid 20521] <... openat resumed>)       = 3
[pid 20521] write(3, "1000", 4)         = 4
[pid 20521] close(3)                    = 0
[pid 20521] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20521] write(1, "executing program\n", 18executing program
) = 18
[pid 20521] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20521] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20521] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20521] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20521] exit_group(0)               = ?
[pid 20521] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20521, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19682", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19682", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19682/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19682/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19682/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19682")                        = 0
mkdir("./19683", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20522
./strace-static-x86_64: Process 20522 attached
[pid 20522] set_robust_list(0x5555589fe660, 24) = 0
[pid 20522] chdir("./19683")            = 0
[pid 20522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20522] setpgid(0, 0)               = 0
[pid 20522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20522] write(3, "1000", 4)         = 4
[pid 20522] close(3)                    = 0
[pid 20522] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20522] write(1, "executing program\n", 18) = 18
[pid 20522] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20522] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20522] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20522] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20522] exit_group(0)               = ?
[pid 20522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19683", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19683", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19683/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19683/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19683/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19683")                        = 0
mkdir("./19684", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20523
./strace-static-x86_64: Process 20523 attached
[pid 20523] set_robust_list(0x5555589fe660, 24) = 0
[pid 20523] chdir("./19684")            = 0
[pid 20523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20523] setpgid(0, 0)               = 0
[pid 20523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20523] write(3, "1000", 4)         = 4
[pid 20523] close(3)                    = 0
[pid 20523] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20523] write(1, "executing program\n", 18executing program
) = 18
[pid 20523] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20523] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20523] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20523] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20523] exit_group(0)               = ?
[pid 20523] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20523, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19684", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19684", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19684/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19684/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19684/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19684")                        = 0
mkdir("./19685", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20524
./strace-static-x86_64: Process 20524 attached
[pid 20524] set_robust_list(0x5555589fe660, 24) = 0
[pid 20524] chdir("./19685")            = 0
[pid 20524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20524] setpgid(0, 0)               = 0
[pid 20524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20524] write(3, "1000", 4)         = 4
[pid 20524] close(3)                    = 0
[pid 20524] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20524] write(1, "executing program\n", 18) = 18
[pid 20524] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20524] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20524] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20524] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20524] exit_group(0)               = ?
[pid 20524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19685", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19685", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19685/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19685/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19685/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19685")                        = 0
mkdir("./19686", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20525
./strace-static-x86_64: Process 20525 attached
[pid 20525] set_robust_list(0x5555589fe660, 24) = 0
[pid 20525] chdir("./19686")            = 0
[pid 20525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20525] setpgid(0, 0)               = 0
[pid 20525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20525] write(3, "1000", 4)         = 4
[pid 20525] close(3)                    = 0
[pid 20525] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20525] write(1, "executing program\n", 18executing program
) = 18
[pid 20525] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20525] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20525] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20525] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20525] exit_group(0)               = ?
[pid 20525] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20525, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19686", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19686", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19686/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19686/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19686/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19686")                        = 0
mkdir("./19687", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20526
./strace-static-x86_64: Process 20526 attached
[pid 20526] set_robust_list(0x5555589fe660, 24) = 0
[pid 20526] chdir("./19687")            = 0
[pid 20526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20526] setpgid(0, 0)               = 0
[pid 20526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20526] write(3, "1000", 4)         = 4
[pid 20526] close(3)                    = 0
[pid 20526] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20526] write(1, "executing program\n", 18executing program
) = 18
[pid 20526] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20526] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20526] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20526] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20526] exit_group(0)               = ?
[pid 20526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19687", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19687", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19687/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19687/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19687/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19687")                        = 0
mkdir("./19688", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20527
./strace-static-x86_64: Process 20527 attached
[pid 20527] set_robust_list(0x5555589fe660, 24) = 0
[pid 20527] chdir("./19688")            = 0
[pid 20527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20527] setpgid(0, 0)               = 0
[pid 20527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20527] write(3, "1000", 4)         = 4
[pid 20527] close(3)                    = 0
[pid 20527] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20527] write(1, "executing program\n", 18) = 18
[pid 20527] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20527] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20527] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20527] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20527] exit_group(0)               = ?
[pid 20527] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20527, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19688", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19688", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19688/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19688/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19688/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19688")                        = 0
mkdir("./19689", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20528 attached
, child_tidptr=0x5555589fe650) = 20528
[pid 20528] set_robust_list(0x5555589fe660, 24) = 0
[pid 20528] chdir("./19689")            = 0
[pid 20528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20528] setpgid(0, 0)               = 0
[pid 20528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20528] write(3, "1000", 4)         = 4
[pid 20528] close(3)                    = 0
[pid 20528] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20528] write(1, "executing program\n", 18executing program
) = 18
[pid 20528] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20528] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20528] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20528] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20528] exit_group(0)               = ?
[pid 20528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19689", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19689", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19689/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19689/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19689/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19689")                        = 0
mkdir("./19690", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20529
./strace-static-x86_64: Process 20529 attached
[pid 20529] set_robust_list(0x5555589fe660, 24) = 0
[pid 20529] chdir("./19690")            = 0
[pid 20529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20529] setpgid(0, 0)               = 0
[pid 20529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20529] write(3, "1000", 4)         = 4
[pid 20529] close(3)                    = 0
[pid 20529] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20529] write(1, "executing program\n", 18) = 18
[pid 20529] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20529] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20529] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20529] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20529] exit_group(0)               = ?
[pid 20529] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20529, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19690", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19690", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19690/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19690/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19690/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19690")                        = 0
mkdir("./19691", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20530
./strace-static-x86_64: Process 20530 attached
[pid 20530] set_robust_list(0x5555589fe660, 24) = 0
[pid 20530] chdir("./19691")            = 0
[pid 20530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20530] setpgid(0, 0)               = 0
[pid 20530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20530] write(3, "1000", 4)         = 4
[pid 20530] close(3)                    = 0
[pid 20530] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20530] write(1, "executing program\n", 18executing program
) = 18
[pid 20530] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20530] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20530] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20530] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20530] exit_group(0)               = ?
[pid 20530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19691", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19691", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19691/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19691/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19691/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19691")                        = 0
mkdir("./19692", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20531 attached
, child_tidptr=0x5555589fe650) = 20531
[pid 20531] set_robust_list(0x5555589fe660, 24) = 0
[pid 20531] chdir("./19692")            = 0
[pid 20531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20531] setpgid(0, 0)               = 0
[pid 20531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20531] write(3, "1000", 4executing program
)         = 4
[pid 20531] close(3)                    = 0
[pid 20531] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20531] write(1, "executing program\n", 18) = 18
[pid 20531] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20531] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20531] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20531] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20531] exit_group(0)               = ?
[pid 20531] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20531, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19692", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19692", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19692/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19692/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19692/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19692")                        = 0
mkdir("./19693", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20532
./strace-static-x86_64: Process 20532 attached
[pid 20532] set_robust_list(0x5555589fe660, 24) = 0
[pid 20532] chdir("./19693")            = 0
[pid 20532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20532] setpgid(0, 0)               = 0
[pid 20532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20532] write(3, "1000", 4)         = 4
[pid 20532] close(3)                    = 0
[pid 20532] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20532] write(1, "executing program\n", 18executing program
) = 18
[pid 20532] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20532] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20532] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20532] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20532] exit_group(0)               = ?
[pid 20532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19693", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19693", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19693/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19693/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19693/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19693")                        = 0
mkdir("./19694", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20533
./strace-static-x86_64: Process 20533 attached
[pid 20533] set_robust_list(0x5555589fe660, 24) = 0
[pid 20533] chdir("./19694")            = 0
[pid 20533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20533] setpgid(0, 0)               = 0
[pid 20533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20533] write(3, "1000", 4)         = 4
[pid 20533] close(3)                    = 0
[pid 20533] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20533] write(1, "executing program\n", 18executing program
) = 18
[pid 20533] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20533] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20533] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20533] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20533] exit_group(0)               = ?
[pid 20533] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20533, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19694", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19694", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19694/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19694/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19694/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19694")                        = 0
mkdir("./19695", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20534 attached
, child_tidptr=0x5555589fe650) = 20534
[pid 20534] set_robust_list(0x5555589fe660, 24) = 0
[pid 20534] chdir("./19695")            = 0
[pid 20534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20534] setpgid(0, 0)               = 0
[pid 20534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20534] write(3, "1000", 4)         = 4
[pid 20534] close(3)                    = 0
[pid 20534] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20534] write(1, "executing program\n", 18executing program
) = 18
[pid 20534] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20534] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20534] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20534] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20534] exit_group(0)               = ?
[pid 20534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19695", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19695", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19695/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19695/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19695/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19695")                        = 0
mkdir("./19696", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20535
./strace-static-x86_64: Process 20535 attached
[pid 20535] set_robust_list(0x5555589fe660, 24) = 0
[pid 20535] chdir("./19696")            = 0
[pid 20535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20535] setpgid(0, 0)               = 0
[pid 20535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20535] write(3, "1000", 4)         = 4
[pid 20535] close(3)                    = 0
[pid 20535] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20535] write(1, "executing program\n", 18executing program
) = 18
[pid 20535] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20535] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20535] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20535] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20535] exit_group(0)               = ?
[pid 20535] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20535, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19696", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19696", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19696/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19696/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19696/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19696")                        = 0
mkdir("./19697", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20536
./strace-static-x86_64: Process 20536 attached
[pid 20536] set_robust_list(0x5555589fe660, 24) = 0
[pid 20536] chdir("./19697")            = 0
[pid 20536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20536] setpgid(0, 0)               = 0
[pid 20536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20536] write(3, "1000", 4)         = 4
[pid 20536] close(3)                    = 0
[pid 20536] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20536] write(1, "executing program\n", 18) = 18
[pid 20536] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20536] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20536] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20536] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20536] exit_group(0)               = ?
[pid 20536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19697", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19697", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19697/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19697/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19697/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19697")                        = 0
mkdir("./19698", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20537
./strace-static-x86_64: Process 20537 attached
[pid 20537] set_robust_list(0x5555589fe660, 24) = 0
[pid 20537] chdir("./19698")            = 0
[pid 20537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20537] setpgid(0, 0)               = 0
[pid 20537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20537] write(3, "1000", 4)         = 4
[pid 20537] close(3)                    = 0
[pid 20537] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20537] write(1, "executing program\n", 18) = 18
[pid 20537] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20537] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20537] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20537] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20537] exit_group(0)               = ?
[pid 20537] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20537, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19698", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19698", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19698/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19698/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19698/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19698")                        = 0
mkdir("./19699", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20538
./strace-static-x86_64: Process 20538 attached
[pid 20538] set_robust_list(0x5555589fe660, 24) = 0
[pid 20538] chdir("./19699")            = 0
[pid 20538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20538] setpgid(0, 0)               = 0
[pid 20538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20538] write(3, "1000", 4)         = 4
[pid 20538] close(3)                    = 0
[pid 20538] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20538] write(1, "executing program\n", 18) = 18
[pid 20538] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20538] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20538] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20538] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20538] exit_group(0)               = ?
[pid 20538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19699", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19699", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19699/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19699/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19699/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19699")                        = 0
mkdir("./19700", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20539
./strace-static-x86_64: Process 20539 attached
[pid 20539] set_robust_list(0x5555589fe660, 24) = 0
[pid 20539] chdir("./19700")            = 0
[pid 20539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20539] setpgid(0, 0)               = 0
[pid 20539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20539] write(3, "1000", 4)         = 4
[pid 20539] close(3)                    = 0
[pid 20539] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20539] write(1, "executing program\n", 18) = 18
[pid 20539] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20539] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20539] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20539] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20539] exit_group(0)               = ?
[pid 20539] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20539, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19700", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19700", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19700/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19700/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19700/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19700")                        = 0
mkdir("./19701", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20540
./strace-static-x86_64: Process 20540 attached
[pid 20540] set_robust_list(0x5555589fe660, 24) = 0
[pid 20540] chdir("./19701")            = 0
[pid 20540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20540] setpgid(0, 0)               = 0
[pid 20540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20540] write(3, "1000", 4)         = 4
[pid 20540] close(3)                    = 0
[pid 20540] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20540] write(1, "executing program\n", 18executing program
) = 18
[pid 20540] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20540] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20540] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20540] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20540] exit_group(0)               = ?
[pid 20540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19701", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19701", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19701/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19701/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19701/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19701")                        = 0
mkdir("./19702", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20541 attached
, child_tidptr=0x5555589fe650) = 20541
[pid 20541] set_robust_list(0x5555589fe660, 24) = 0
[pid 20541] chdir("./19702")            = 0
[pid 20541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20541] setpgid(0, 0)               = 0
[pid 20541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20541] write(3, "1000", 4)         = 4
[pid 20541] close(3)                    = 0
[pid 20541] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20541] write(1, "executing program\n", 18) = 18
[pid 20541] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20541] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20541] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20541] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20541] exit_group(0)               = ?
[pid 20541] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20541, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19702", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19702", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19702/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19702/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19702/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19702")                        = 0
mkdir("./19703", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20542
./strace-static-x86_64: Process 20542 attached
[pid 20542] set_robust_list(0x5555589fe660, 24) = 0
[pid 20542] chdir("./19703")            = 0
[pid 20542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20542] setpgid(0, 0)               = 0
[pid 20542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20542] write(3, "1000", 4)         = 4
[pid 20542] close(3)                    = 0
[pid 20542] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20542] write(1, "executing program\n", 18) = 18
[pid 20542] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20542] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20542] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20542] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20542] exit_group(0)               = ?
[pid 20542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19703", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19703", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19703/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19703/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19703/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19703")                        = 0
mkdir("./19704", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20544
./strace-static-x86_64: Process 20544 attached
[pid 20544] set_robust_list(0x5555589fe660, 24) = 0
[pid 20544] chdir("./19704")            = 0
[pid 20544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20544] setpgid(0, 0)               = 0
[pid 20544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20544] write(3, "1000", 4)         = 4
[pid 20544] close(3)                    = 0
[pid 20544] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20544] write(1, "executing program\n", 18executing program
) = 18
[pid 20544] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20544] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20544] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20544] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20544] exit_group(0)               = ?
[pid 20544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19704", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19704", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19704/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19704/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19704/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19704")                        = 0
mkdir("./19705", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20545
./strace-static-x86_64: Process 20545 attached
[pid 20545] set_robust_list(0x5555589fe660, 24) = 0
[pid 20545] chdir("./19705")            = 0
[pid 20545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20545] setpgid(0, 0)               = 0
[pid 20545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20545] write(3, "1000", 4)         = 4
[pid 20545] close(3)                    = 0
[pid 20545] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20545] write(1, "executing program\n", 18) = 18
[pid 20545] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20545] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20545] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20545] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20545] exit_group(0)               = ?
[pid 20545] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20545, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19705", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19705", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19705/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19705/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19705/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19705")                        = 0
mkdir("./19706", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20546
./strace-static-x86_64: Process 20546 attached
[pid 20546] set_robust_list(0x5555589fe660, 24) = 0
[pid 20546] chdir("./19706")            = 0
[pid 20546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20546] setpgid(0, 0)               = 0
[pid 20546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20546] write(3, "1000", 4)         = 4
[pid 20546] close(3)                    = 0
[pid 20546] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20546] write(1, "executing program\n", 18executing program
) = 18
[pid 20546] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20546] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20546] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20546] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20546] exit_group(0)               = ?
[pid 20546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19706", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19706", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19706/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19706/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19706/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19706")                        = 0
mkdir("./19707", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20547
./strace-static-x86_64: Process 20547 attached
[pid 20547] set_robust_list(0x5555589fe660, 24) = 0
[pid 20547] chdir("./19707")            = 0
[pid 20547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20547] setpgid(0, 0)               = 0
[pid 20547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20547] write(3, "1000", 4)         = 4
[pid 20547] close(3)                    = 0
[pid 20547] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20547] write(1, "executing program\n", 18) = 18
[pid 20547] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20547] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20547] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20547] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20547] exit_group(0)               = ?
[pid 20547] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20547, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19707", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19707", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19707/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19707/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19707/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19707")                        = 0
mkdir("./19708", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20548
./strace-static-x86_64: Process 20548 attached
[pid 20548] set_robust_list(0x5555589fe660, 24) = 0
[pid 20548] chdir("./19708")            = 0
[pid 20548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20548] setpgid(0, 0)               = 0
[pid 20548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20548] write(3, "1000", 4)         = 4
[pid 20548] close(3)                    = 0
[pid 20548] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20548] write(1, "executing program\n", 18executing program
) = 18
[pid 20548] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20548] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20548] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20548] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20548] exit_group(0)               = ?
[pid 20548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19708", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19708", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19708/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19708/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19708/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19708")                        = 0
mkdir("./19709", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20549
./strace-static-x86_64: Process 20549 attached
[pid 20549] set_robust_list(0x5555589fe660, 24) = 0
[pid 20549] chdir("./19709")            = 0
[pid 20549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20549] setpgid(0, 0)               = 0
[pid 20549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20549] write(3, "1000", 4)         = 4
[pid 20549] close(3)                    = 0
[pid 20549] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20549] write(1, "executing program\n", 18executing program
) = 18
[pid 20549] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20549] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20549] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20549] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20549] exit_group(0)               = ?
[pid 20549] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20549, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19709", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19709", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19709/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19709/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19709/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19709")                        = 0
mkdir("./19710", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20550
./strace-static-x86_64: Process 20550 attached
[pid 20550] set_robust_list(0x5555589fe660, 24) = 0
[pid 20550] chdir("./19710")            = 0
[pid 20550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20550] setpgid(0, 0)               = 0
[pid 20550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20550] write(3, "1000", 4)         = 4
[pid 20550] close(3)                    = 0
[pid 20550] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20550] write(1, "executing program\n", 18) = 18
[pid 20550] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20550] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20550] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20550] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20550] exit_group(0)               = ?
[pid 20550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19710", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19710", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19710/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19710/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19710/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19710")                        = 0
mkdir("./19711", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20551 attached
, child_tidptr=0x5555589fe650) = 20551
[pid 20551] set_robust_list(0x5555589fe660, 24) = 0
[pid 20551] chdir("./19711")            = 0
[pid 20551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20551] setpgid(0, 0)               = 0
[pid 20551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20551] write(3, "1000", 4)         = 4
[pid 20551] close(3)                    = 0
[pid 20551] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20551] write(1, "executing program\n", 18executing program
) = 18
[pid 20551] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20551] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20551] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20551] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20551] exit_group(0)               = ?
[pid 20551] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20551, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19711", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19711", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19711/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19711/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19711/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19711")                        = 0
mkdir("./19712", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20552
./strace-static-x86_64: Process 20552 attached
[pid 20552] set_robust_list(0x5555589fe660, 24) = 0
[pid 20552] chdir("./19712")            = 0
[pid 20552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20552] setpgid(0, 0)               = 0
[pid 20552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20552] write(3, "1000", 4)         = 4
[pid 20552] close(3)                    = 0
[pid 20552] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20552] write(1, "executing program\n", 18) = 18
[pid 20552] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20552] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20552] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20552] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20552] exit_group(0)               = ?
[pid 20552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19712", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19712", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19712/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19712/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19712/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19712")                        = 0
mkdir("./19713", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20553
./strace-static-x86_64: Process 20553 attached
[pid 20553] set_robust_list(0x5555589fe660, 24) = 0
[pid 20553] chdir("./19713")            = 0
[pid 20553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20553] setpgid(0, 0)               = 0
[pid 20553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20553] write(3, "1000", 4)         = 4
[pid 20553] close(3)                    = 0
[pid 20553] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20553] write(1, "executing program\n", 18executing program
) = 18
[pid 20553] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20553] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20553] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20553] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20553] exit_group(0)               = ?
[pid 20553] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20553, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19713", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19713", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19713/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19713/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19713/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19713")                        = 0
mkdir("./19714", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20554 attached
, child_tidptr=0x5555589fe650) = 20554
[pid 20554] set_robust_list(0x5555589fe660, 24) = 0
[pid 20554] chdir("./19714")            = 0
[pid 20554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20554] setpgid(0, 0)               = 0
[pid 20554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20554] write(3, "1000", 4)         = 4
[pid 20554] close(3)                    = 0
[pid 20554] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20554] write(1, "executing program\n", 18) = 18
[pid 20554] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20554] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20554] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20554] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20554] exit_group(0)               = ?
[pid 20554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19714", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19714", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19714/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19714/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19714/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19714")                        = 0
mkdir("./19715", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20555
./strace-static-x86_64: Process 20555 attached
[pid 20555] set_robust_list(0x5555589fe660, 24) = 0
[pid 20555] chdir("./19715")            = 0
[pid 20555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20555] setpgid(0, 0)               = 0
[pid 20555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20555] write(3, "1000", 4)         = 4
[pid 20555] close(3)                    = 0
[pid 20555] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20555] write(1, "executing program\n", 18) = 18
[pid 20555] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20555] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20555] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20555] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20555] exit_group(0)               = ?
[pid 20555] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20555, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19715", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19715", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19715/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19715/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19715/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19715")                        = 0
mkdir("./19716", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20556
./strace-static-x86_64: Process 20556 attached
[pid 20556] set_robust_list(0x5555589fe660, 24) = 0
[pid 20556] chdir("./19716")            = 0
[pid 20556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20556] setpgid(0, 0)               = 0
[pid 20556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20556] write(3, "1000", 4)         = 4
[pid 20556] close(3)                    = 0
[pid 20556] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20556] write(1, "executing program\n", 18executing program
) = 18
[pid 20556] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20556] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20556] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20556] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20556] exit_group(0)               = ?
[pid 20556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19716", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19716", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19716/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19716/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19716/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19716")                        = 0
mkdir("./19717", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20557
./strace-static-x86_64: Process 20557 attached
[pid 20557] set_robust_list(0x5555589fe660, 24) = 0
[pid 20557] chdir("./19717")            = 0
[pid 20557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20557] setpgid(0, 0)               = 0
[pid 20557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20557] write(3, "1000", 4)         = 4
[pid 20557] close(3)                    = 0
[pid 20557] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20557] write(1, "executing program\n", 18executing program
) = 18
[pid 20557] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20557] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20557] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20557] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20557] exit_group(0)               = ?
[pid 20557] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20557, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19717", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19717", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19717/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19717/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19717/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19717")                        = 0
mkdir("./19718", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20558
./strace-static-x86_64: Process 20558 attached
[pid 20558] set_robust_list(0x5555589fe660, 24) = 0
[pid 20558] chdir("./19718")            = 0
[pid 20558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20558] setpgid(0, 0)               = 0
[pid 20558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20558] write(3, "1000", 4)         = 4
[pid 20558] close(3)                    = 0
[pid 20558] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20558] write(1, "executing program\n", 18executing program
) = 18
[pid 20558] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20558] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20558] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20558] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20558] exit_group(0)               = ?
[pid 20558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19718", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19718", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19718/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19718/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19718/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19718")                        = 0
mkdir("./19719", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20559 attached
, child_tidptr=0x5555589fe650) = 20559
[pid 20559] set_robust_list(0x5555589fe660, 24) = 0
[pid 20559] chdir("./19719")            = 0
[pid 20559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20559] setpgid(0, 0)               = 0
[pid 20559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20559] write(3, "1000", 4)         = 4
[pid 20559] close(3)                    = 0
[pid 20559] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20559] write(1, "executing program\n", 18executing program
) = 18
[pid 20559] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20559] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20559] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20559] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20559] exit_group(0)               = ?
[pid 20559] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20559, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19719", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19719", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19719/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19719/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19719/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19719")                        = 0
mkdir("./19720", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20560 attached
, child_tidptr=0x5555589fe650) = 20560
[pid 20560] set_robust_list(0x5555589fe660, 24) = 0
[pid 20560] chdir("./19720")            = 0
[pid 20560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20560] setpgid(0, 0)               = 0
[pid 20560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20560] write(3, "1000", 4)         = 4
[pid 20560] close(3)                    = 0
[pid 20560] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20560] write(1, "executing program\n", 18executing program
) = 18
[pid 20560] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20560] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20560] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20560] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20560] exit_group(0)               = ?
[pid 20560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19720", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19720", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19720/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19720/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19720/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19720")                        = 0
mkdir("./19721", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20561 attached
, child_tidptr=0x5555589fe650) = 20561
[pid 20561] set_robust_list(0x5555589fe660, 24) = 0
[pid 20561] chdir("./19721")            = 0
[pid 20561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20561] setpgid(0, 0)               = 0
[pid 20561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20561] write(3, "1000", 4)         = 4
[pid 20561] close(3)                    = 0
[pid 20561] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20561] write(1, "executing program\n", 18executing program
) = 18
[pid 20561] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20561] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20561] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20561] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20561] exit_group(0)               = ?
[pid 20561] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20561, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19721", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19721", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19721/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19721/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19721/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19721")                        = 0
mkdir("./19722", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20562
./strace-static-x86_64: Process 20562 attached
[pid 20562] set_robust_list(0x5555589fe660, 24) = 0
[pid 20562] chdir("./19722")            = 0
[pid 20562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20562] setpgid(0, 0)               = 0
[pid 20562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20562] write(3, "1000", 4)         = 4
[pid 20562] close(3)                    = 0
[pid 20562] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20562] write(1, "executing program\n", 18executing program
) = 18
[pid 20562] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20562] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20562] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20562] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20562] exit_group(0)               = ?
[pid 20562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19722", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19722", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19722/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19722/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19722/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19722")                        = 0
mkdir("./19723", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20563
./strace-static-x86_64: Process 20563 attached
[pid 20563] set_robust_list(0x5555589fe660, 24) = 0
[pid 20563] chdir("./19723")            = 0
[pid 20563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20563] setpgid(0, 0)               = 0
[pid 20563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20563] write(3, "1000", 4)         = 4
[pid 20563] close(3)                    = 0
[pid 20563] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20563] write(1, "executing program\n", 18executing program
) = 18
[pid 20563] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20563] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20563] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20563] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20563] exit_group(0)               = ?
[pid 20563] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20563, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19723", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19723", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19723/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19723/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19723/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19723")                        = 0
mkdir("./19724", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20564 attached
, child_tidptr=0x5555589fe650) = 20564
[pid 20564] set_robust_list(0x5555589fe660, 24) = 0
[pid 20564] chdir("./19724")            = 0
[pid 20564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20564] setpgid(0, 0)               = 0
[pid 20564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20564] write(3, "1000", 4)         = 4
[pid 20564] close(3)                    = 0
[pid 20564] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20564] write(1, "executing program\n", 18executing program
) = 18
[pid 20564] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20564] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20564] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20564] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20564] exit_group(0)               = ?
[pid 20564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19724", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19724", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19724/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19724/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19724/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19724")                        = 0
mkdir("./19725", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20565
./strace-static-x86_64: Process 20565 attached
[pid 20565] set_robust_list(0x5555589fe660, 24) = 0
[pid 20565] chdir("./19725")            = 0
[pid 20565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20565] setpgid(0, 0)               = 0
[pid 20565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20565] write(3, "1000", 4)         = 4
[pid 20565] close(3)                    = 0
[pid 20565] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20565] write(1, "executing program\n", 18executing program
) = 18
[pid 20565] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20565] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20565] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20565] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20565] exit_group(0)               = ?
[pid 20565] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20565, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19725", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19725", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19725/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19725/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19725/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19725")                        = 0
mkdir("./19726", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20566
./strace-static-x86_64: Process 20566 attached
[pid 20566] set_robust_list(0x5555589fe660, 24) = 0
[pid 20566] chdir("./19726")            = 0
[pid 20566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20566] setpgid(0, 0)               = 0
[pid 20566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20566] write(3, "1000", 4)         = 4
[pid 20566] close(3)                    = 0
[pid 20566] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20566] write(1, "executing program\n", 18executing program
) = 18
[pid 20566] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20566] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20566] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20566] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20566] exit_group(0)               = ?
[pid 20566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19726", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19726", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19726/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19726/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19726/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19726")                        = 0
mkdir("./19727", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20567
./strace-static-x86_64: Process 20567 attached
[pid 20567] set_robust_list(0x5555589fe660, 24) = 0
[pid 20567] chdir("./19727")            = 0
[pid 20567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20567] setpgid(0, 0)               = 0
[pid 20567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20567] write(3, "1000", 4)         = 4
[pid 20567] close(3)                    = 0
[pid 20567] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20567] write(1, "executing program\n", 18executing program
) = 18
[pid 20567] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20567] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20567] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20567] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20567] exit_group(0)               = ?
[pid 20567] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20567, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19727", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19727", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19727/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19727/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19727/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19727")                        = 0
mkdir("./19728", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20568
./strace-static-x86_64: Process 20568 attached
[pid 20568] set_robust_list(0x5555589fe660, 24) = 0
[pid 20568] chdir("./19728")            = 0
[pid 20568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20568] setpgid(0, 0)               = 0
[pid 20568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20568] write(3, "1000", 4)         = 4
[pid 20568] close(3)                    = 0
[pid 20568] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20568] write(1, "executing program\n", 18executing program
) = 18
[pid 20568] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20568] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20568] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20568] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20568] exit_group(0)               = ?
[pid 20568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19728", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19728", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19728/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19728/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19728/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19728")                        = 0
mkdir("./19729", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20569
./strace-static-x86_64: Process 20569 attached
[pid 20569] set_robust_list(0x5555589fe660, 24) = 0
[pid 20569] chdir("./19729")            = 0
[pid 20569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20569] setpgid(0, 0)               = 0
[pid 20569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20569] write(3, "1000", 4)         = 4
[pid 20569] close(3)                    = 0
[pid 20569] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20569] write(1, "executing program\n", 18executing program
) = 18
[pid 20569] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20569] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20569] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20569] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20569] exit_group(0)               = ?
[pid 20569] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20569, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19729", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19729", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19729/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19729/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19729/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19729")                        = 0
mkdir("./19730", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20570
./strace-static-x86_64: Process 20570 attached
[pid 20570] set_robust_list(0x5555589fe660, 24) = 0
[pid 20570] chdir("./19730")            = 0
[pid 20570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20570] setpgid(0, 0)               = 0
[pid 20570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20570] write(3, "1000", 4)         = 4
[pid 20570] close(3)                    = 0
[pid 20570] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20570] write(1, "executing program\n", 18executing program
) = 18
[pid 20570] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20570] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20570] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20570] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20570] exit_group(0)               = ?
[pid 20570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19730", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19730", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19730/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19730/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19730/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19730")                        = 0
mkdir("./19731", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20571
./strace-static-x86_64: Process 20571 attached
[pid 20571] set_robust_list(0x5555589fe660, 24) = 0
[pid 20571] chdir("./19731")            = 0
[pid 20571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20571] setpgid(0, 0)               = 0
[pid 20571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20571] write(3, "1000", 4)         = 4
[pid 20571] close(3)                    = 0
[pid 20571] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20571] write(1, "executing program\n", 18executing program
) = 18
[pid 20571] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20571] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20571] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20571] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20571] exit_group(0)               = ?
[pid 20571] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20571, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19731", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19731", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19731/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19731/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19731/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19731")                        = 0
mkdir("./19732", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20572
./strace-static-x86_64: Process 20572 attached
[pid 20572] set_robust_list(0x5555589fe660, 24) = 0
[pid 20572] chdir("./19732")            = 0
[pid 20572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20572] setpgid(0, 0)               = 0
[pid 20572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20572] write(3, "1000", 4)         = 4
[pid 20572] close(3)                    = 0
[pid 20572] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20572] write(1, "executing program\n", 18) = 18
[pid 20572] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20572] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20572] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20572] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20572] exit_group(0)               = ?
[pid 20572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19732", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19732", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19732/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19732/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19732/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19732")                        = 0
mkdir("./19733", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20573
./strace-static-x86_64: Process 20573 attached
[pid 20573] set_robust_list(0x5555589fe660, 24) = 0
[pid 20573] chdir("./19733")            = 0
[pid 20573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20573] setpgid(0, 0)               = 0
[pid 20573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20573] write(3, "1000", 4)         = 4
[pid 20573] close(3)                    = 0
[pid 20573] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20573] write(1, "executing program\n", 18executing program
) = 18
[pid 20573] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20573] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20573] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20573] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20573] exit_group(0)               = ?
[pid 20573] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20573, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19733", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19733", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19733/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19733/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19733/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19733")                        = 0
mkdir("./19734", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20574
./strace-static-x86_64: Process 20574 attached
[pid 20574] set_robust_list(0x5555589fe660, 24) = 0
[pid 20574] chdir("./19734")            = 0
[pid 20574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20574] setpgid(0, 0)               = 0
[pid 20574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20574] write(3, "1000", 4)         = 4
[pid 20574] close(3)                    = 0
[pid 20574] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20574] write(1, "executing program\n", 18executing program
) = 18
[pid 20574] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20574] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20574] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20574] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20574] exit_group(0)               = ?
[pid 20574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19734", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19734", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19734/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19734/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19734/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19734")                        = 0
mkdir("./19735", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20575
./strace-static-x86_64: Process 20575 attached
[pid 20575] set_robust_list(0x5555589fe660, 24) = 0
[pid 20575] chdir("./19735")            = 0
[pid 20575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20575] setpgid(0, 0)               = 0
[pid 20575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20575] write(3, "1000", 4)         = 4
[pid 20575] close(3)                    = 0
[pid 20575] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20575] write(1, "executing program\n", 18executing program
) = 18
[pid 20575] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20575] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20575] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20575] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20575] exit_group(0)               = ?
[pid 20575] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20575, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19735", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19735", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19735/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19735/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19735/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19735")                        = 0
mkdir("./19736", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20576
./strace-static-x86_64: Process 20576 attached
[pid 20576] set_robust_list(0x5555589fe660, 24) = 0
[pid 20576] chdir("./19736")            = 0
[pid 20576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20576] setpgid(0, 0)               = 0
[pid 20576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20576] write(3, "1000", 4)         = 4
[pid 20576] close(3)                    = 0
[pid 20576] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20576] write(1, "executing program\n", 18executing program
) = 18
[pid 20576] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20576] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20576] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20576] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20576] exit_group(0)               = ?
[pid 20576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19736", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19736", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19736/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19736/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19736/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19736")                        = 0
mkdir("./19737", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20577
./strace-static-x86_64: Process 20577 attached
[pid 20577] set_robust_list(0x5555589fe660, 24) = 0
[pid 20577] chdir("./19737")            = 0
[pid 20577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20577] setpgid(0, 0)               = 0
[pid 20577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20577] write(3, "1000", 4)         = 4
[pid 20577] close(3)                    = 0
[pid 20577] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20577] write(1, "executing program\n", 18executing program
) = 18
[pid 20577] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20577] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20577] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20577] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20577] exit_group(0)               = ?
[pid 20577] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20577, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19737", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19737", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19737/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19737/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19737/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19737")                        = 0
mkdir("./19738", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20578
./strace-static-x86_64: Process 20578 attached
[pid 20578] set_robust_list(0x5555589fe660, 24) = 0
[pid 20578] chdir("./19738")            = 0
[pid 20578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20578] setpgid(0, 0)               = 0
[pid 20578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20578] write(3, "1000", 4)         = 4
[pid 20578] close(3)                    = 0
[pid 20578] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20578] write(1, "executing program\n", 18executing program
) = 18
[pid 20578] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20578] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20578] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20578] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20578] exit_group(0)               = ?
[pid 20578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19738", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19738", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19738/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19738/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19738/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19738")                        = 0
mkdir("./19739", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20579
./strace-static-x86_64: Process 20579 attached
[pid 20579] set_robust_list(0x5555589fe660, 24) = 0
[pid 20579] chdir("./19739")            = 0
[pid 20579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20579] setpgid(0, 0)               = 0
[pid 20579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20579] write(3, "1000", 4)         = 4
[pid 20579] close(3)                    = 0
[pid 20579] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20579] write(1, "executing program\n", 18) = 18
[pid 20579] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20579] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20579] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20579] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20579] exit_group(0)               = ?
[pid 20579] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20579, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19739", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19739", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19739/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19739/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19739/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19739")                        = 0
mkdir("./19740", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20580
./strace-static-x86_64: Process 20580 attached
[pid 20580] set_robust_list(0x5555589fe660, 24) = 0
[pid 20580] chdir("./19740")            = 0
[pid 20580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20580] setpgid(0, 0)               = 0
[pid 20580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20580] write(3, "1000", 4)         = 4
[pid 20580] close(3)                    = 0
[pid 20580] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20580] write(1, "executing program\n", 18executing program
) = 18
[pid 20580] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20580] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20580] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20580] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20580] exit_group(0)               = ?
[pid 20580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19740", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19740", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19740/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19740/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19740/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19740")                        = 0
mkdir("./19741", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20581
./strace-static-x86_64: Process 20581 attached
[pid 20581] set_robust_list(0x5555589fe660, 24) = 0
[pid 20581] chdir("./19741")            = 0
[pid 20581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20581] setpgid(0, 0)               = 0
[pid 20581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20581] write(3, "1000", 4)         = 4
[pid 20581] close(3)                    = 0
[pid 20581] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20581] write(1, "executing program\n", 18executing program
) = 18
[pid 20581] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20581] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20581] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20581] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20581] exit_group(0)               = ?
[pid 20581] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20581, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19741", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19741", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19741/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19741/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19741/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19741")                        = 0
mkdir("./19742", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20582
./strace-static-x86_64: Process 20582 attached
[pid 20582] set_robust_list(0x5555589fe660, 24) = 0
[pid 20582] chdir("./19742")            = 0
[pid 20582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20582] setpgid(0, 0)               = 0
[pid 20582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20582] write(3, "1000", 4)         = 4
[pid 20582] close(3)                    = 0
[pid 20582] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20582] write(1, "executing program\n", 18) = 18
[pid 20582] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20582] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20582] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20582] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20582] exit_group(0)               = ?
[pid 20582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19742", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19742", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19742/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19742/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19742/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19742")                        = 0
mkdir("./19743", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20583 attached
 <unfinished ...>
[pid 20583] set_robust_list(0x5555589fe660, 24) = 0
[pid 20583] chdir("./19743" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20583
[pid 20583] <... chdir resumed>)        = 0
[pid 20583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20583] setpgid(0, 0)               = 0
[pid 20583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20583] write(3, "1000", 4)         = 4
[pid 20583] close(3)                    = 0
[pid 20583] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20583] write(1, "executing program\n", 18executing program
) = 18
[pid 20583] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20583] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20583] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20583] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20583] exit_group(0)               = ?
[pid 20583] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20583, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19743", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19743", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19743/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19743/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19743/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19743")                        = 0
mkdir("./19744", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20584
./strace-static-x86_64: Process 20584 attached
[pid 20584] set_robust_list(0x5555589fe660, 24) = 0
[pid 20584] chdir("./19744")            = 0
[pid 20584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20584] setpgid(0, 0)               = 0
[pid 20584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20584] write(3, "1000", 4)         = 4
[pid 20584] close(3)                    = 0
[pid 20584] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20584] write(1, "executing program\n", 18executing program
) = 18
[pid 20584] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20584] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20584] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20584] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20584] exit_group(0)               = ?
[pid 20584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19744", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19744", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19744/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19744/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19744/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19744")                        = 0
mkdir("./19745", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20585
./strace-static-x86_64: Process 20585 attached
[pid 20585] set_robust_list(0x5555589fe660, 24) = 0
[pid 20585] chdir("./19745")            = 0
[pid 20585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20585] setpgid(0, 0)               = 0
[pid 20585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20585] write(3, "1000", 4)         = 4
[pid 20585] close(3)                    = 0
[pid 20585] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20585] write(1, "executing program\n", 18executing program
) = 18
[pid 20585] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20585] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20585] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20585] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20585] exit_group(0)               = ?
[pid 20585] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20585, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19745", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19745", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19745/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19745/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19745/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19745")                        = 0
mkdir("./19746", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20586
./strace-static-x86_64: Process 20586 attached
[pid 20586] set_robust_list(0x5555589fe660, 24) = 0
[pid 20586] chdir("./19746")            = 0
[pid 20586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20586] setpgid(0, 0)               = 0
[pid 20586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20586] write(3, "1000", 4)         = 4
[pid 20586] close(3)                    = 0
[pid 20586] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20586] write(1, "executing program\n", 18) = 18
[pid 20586] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20586] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20586] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20586] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20586] exit_group(0)               = ?
[pid 20586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19746", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19746", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19746/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19746/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19746/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19746")                        = 0
mkdir("./19747", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20587
./strace-static-x86_64: Process 20587 attached
[pid 20587] set_robust_list(0x5555589fe660, 24) = 0
[pid 20587] chdir("./19747")            = 0
[pid 20587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20587] setpgid(0, 0)               = 0
[pid 20587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20587] write(3, "1000", 4)         = 4
[pid 20587] close(3)                    = 0
[pid 20587] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20587] write(1, "executing program\n", 18) = 18
[pid 20587] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20587] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20587] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20587] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20587] exit_group(0)               = ?
[pid 20587] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20587, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19747", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19747", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19747/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19747/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19747/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19747")                        = 0
mkdir("./19748", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20588
./strace-static-x86_64: Process 20588 attached
[pid 20588] set_robust_list(0x5555589fe660, 24) = 0
[pid 20588] chdir("./19748")            = 0
[pid 20588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20588] setpgid(0, 0)               = 0
[pid 20588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20588] write(3, "1000", 4)         = 4
[pid 20588] close(3)                    = 0
[pid 20588] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20588] write(1, "executing program\n", 18executing program
) = 18
[pid 20588] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20588] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20588] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20588] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20588] exit_group(0)               = ?
[pid 20588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19748", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19748", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19748/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19748/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19748/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19748")                        = 0
mkdir("./19749", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20589
./strace-static-x86_64: Process 20589 attached
[pid 20589] set_robust_list(0x5555589fe660, 24) = 0
[pid 20589] chdir("./19749")            = 0
[pid 20589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20589] setpgid(0, 0)               = 0
[pid 20589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20589] write(3, "1000", 4)         = 4
[pid 20589] close(3)                    = 0
[pid 20589] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20589] write(1, "executing program\n", 18executing program
) = 18
[pid 20589] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20589] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20589] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20589] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20589] exit_group(0)               = ?
[pid 20589] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20589, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19749", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19749", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19749/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19749/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19749/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19749")                        = 0
mkdir("./19750", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20590
./strace-static-x86_64: Process 20590 attached
[pid 20590] set_robust_list(0x5555589fe660, 24) = 0
[pid 20590] chdir("./19750")            = 0
[pid 20590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20590] setpgid(0, 0)               = 0
[pid 20590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20590] write(3, "1000", 4)         = 4
[pid 20590] close(3)                    = 0
[pid 20590] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20590] write(1, "executing program\n", 18executing program
) = 18
[pid 20590] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20590] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20590] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20590] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20590] exit_group(0)               = ?
[pid 20590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19750", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19750", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19750/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19750/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19750/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19750")                        = 0
mkdir("./19751", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20591
./strace-static-x86_64: Process 20591 attached
[pid 20591] set_robust_list(0x5555589fe660, 24) = 0
[pid 20591] chdir("./19751")            = 0
[pid 20591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20591] setpgid(0, 0)               = 0
[pid 20591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20591] write(3, "1000", 4)         = 4
[pid 20591] close(3)                    = 0
[pid 20591] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20591] write(1, "executing program\n", 18) = 18
[pid 20591] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20591] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20591] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20591] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20591] exit_group(0)               = ?
[pid 20591] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20591, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19751", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19751", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19751/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19751/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19751/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19751")                        = 0
mkdir("./19752", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20592
./strace-static-x86_64: Process 20592 attached
[pid 20592] set_robust_list(0x5555589fe660, 24) = 0
[pid 20592] chdir("./19752")            = 0
[pid 20592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20592] setpgid(0, 0)               = 0
[pid 20592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20592] write(3, "1000", 4)         = 4
[pid 20592] close(3)                    = 0
[pid 20592] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20592] write(1, "executing program\n", 18executing program
) = 18
[pid 20592] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20592] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20592] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20592] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20592] exit_group(0)               = ?
[pid 20592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19752", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19752", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19752/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19752/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19752/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19752")                        = 0
mkdir("./19753", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20593
./strace-static-x86_64: Process 20593 attached
[pid 20593] set_robust_list(0x5555589fe660, 24) = 0
[pid 20593] chdir("./19753")            = 0
[pid 20593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20593] setpgid(0, 0)               = 0
[pid 20593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20593] write(3, "1000", 4)         = 4
[pid 20593] close(3)                    = 0
[pid 20593] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20593] write(1, "executing program\n", 18executing program
) = 18
[pid 20593] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20593] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20593] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20593] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20593] exit_group(0)               = ?
[pid 20593] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20593, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19753", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19753", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19753/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19753/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19753/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19753")                        = 0
mkdir("./19754", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20594 attached
 <unfinished ...>
[pid 20594] set_robust_list(0x5555589fe660, 24) = 0
[pid 20594] chdir("./19754")            = 0
[pid 20594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20594] setpgid(0, 0)               = 0
[pid 20594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20594
[pid 20594] <... openat resumed>)       = 3
[pid 20594] write(3, "1000", 4)         = 4
[pid 20594] close(3)                    = 0
[pid 20594] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20594] write(1, "executing program\n", 18executing program
) = 18
[pid 20594] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20594] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20594] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20594] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20594] exit_group(0)               = ?
[pid 20594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19754", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19754", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19754/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19754/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19754/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19754")                        = 0
mkdir("./19755", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20595
./strace-static-x86_64: Process 20595 attached
[pid 20595] set_robust_list(0x5555589fe660, 24) = 0
[pid 20595] chdir("./19755")            = 0
[pid 20595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20595] setpgid(0, 0)               = 0
[pid 20595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20595] write(3, "1000", 4)         = 4
[pid 20595] close(3)                    = 0
[pid 20595] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20595] write(1, "executing program\n", 18executing program
) = 18
[pid 20595] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20595] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20595] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20595] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20595] exit_group(0)               = ?
[pid 20595] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20595, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19755", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19755", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19755/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19755/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19755/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19755")                        = 0
mkdir("./19756", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20596 attached
, child_tidptr=0x5555589fe650) = 20596
[pid 20596] set_robust_list(0x5555589fe660, 24) = 0
[pid 20596] chdir("./19756")            = 0
[pid 20596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20596] setpgid(0, 0)               = 0
[pid 20596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20596] write(3, "1000", 4)         = 4
[pid 20596] close(3)                    = 0
[pid 20596] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20596] write(1, "executing program\n", 18) = 18
[pid 20596] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20596] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20596] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20596] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20596] exit_group(0)               = ?
[pid 20596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19756", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19756", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19756/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19756/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19756/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19756")                        = 0
mkdir("./19757", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20597 attached
, child_tidptr=0x5555589fe650) = 20597
[pid 20597] set_robust_list(0x5555589fe660, 24) = 0
[pid 20597] chdir("./19757")            = 0
[pid 20597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20597] setpgid(0, 0)               = 0
[pid 20597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20597] write(3, "1000", 4)         = 4
[pid 20597] close(3)                    = 0
[pid 20597] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20597] write(1, "executing program\n", 18executing program
) = 18
[pid 20597] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20597] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20597] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20597] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20597] exit_group(0)               = ?
[pid 20597] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20597, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19757", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19757", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19757/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19757/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19757/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19757")                        = 0
mkdir("./19758", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20598
./strace-static-x86_64: Process 20598 attached
[pid 20598] set_robust_list(0x5555589fe660, 24) = 0
[pid 20598] chdir("./19758")            = 0
[pid 20598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20598] setpgid(0, 0)               = 0
[pid 20598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20598] write(3, "1000", 4)         = 4
[pid 20598] close(3)                    = 0
[pid 20598] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20598] write(1, "executing program\n", 18executing program
) = 18
[pid 20598] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20598] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20598] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20598] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20598] exit_group(0)               = ?
[pid 20598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19758", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19758", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19758/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19758/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19758/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19758")                        = 0
mkdir("./19759", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20599
./strace-static-x86_64: Process 20599 attached
[pid 20599] set_robust_list(0x5555589fe660, 24) = 0
[pid 20599] chdir("./19759")            = 0
[pid 20599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20599] setpgid(0, 0)               = 0
[pid 20599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20599] write(3, "1000", 4)         = 4
[pid 20599] close(3)                    = 0
[pid 20599] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20599] write(1, "executing program\n", 18executing program
) = 18
[pid 20599] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20599] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20599] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20599] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20599] exit_group(0)               = ?
[pid 20599] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20599, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19759", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19759", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19759/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19759/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19759/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19759")                        = 0
mkdir("./19760", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20600
./strace-static-x86_64: Process 20600 attached
[pid 20600] set_robust_list(0x5555589fe660, 24) = 0
[pid 20600] chdir("./19760")            = 0
[pid 20600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20600] setpgid(0, 0)               = 0
[pid 20600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20600] write(3, "1000", 4)         = 4
[pid 20600] close(3)                    = 0
[pid 20600] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20600] write(1, "executing program\n", 18executing program
) = 18
[pid 20600] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20600] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20600] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20600] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20600] exit_group(0)               = ?
[pid 20600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19760", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19760", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19760/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19760/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19760/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19760")                        = 0
mkdir("./19761", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20601
./strace-static-x86_64: Process 20601 attached
[pid 20601] set_robust_list(0x5555589fe660, 24) = 0
[pid 20601] chdir("./19761")            = 0
[pid 20601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20601] setpgid(0, 0)               = 0
[pid 20601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20601] write(3, "1000", 4)         = 4
[pid 20601] close(3)                    = 0
[pid 20601] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20601] write(1, "executing program\n", 18) = 18
[pid 20601] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20601] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20601] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20601] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20601] exit_group(0)               = ?
[pid 20601] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20601, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19761", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19761", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19761/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19761/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19761/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19761")                        = 0
mkdir("./19762", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20602
./strace-static-x86_64: Process 20602 attached
[pid 20602] set_robust_list(0x5555589fe660, 24) = 0
[pid 20602] chdir("./19762")            = 0
[pid 20602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20602] setpgid(0, 0)               = 0
[pid 20602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20602] write(3, "1000", 4)         = 4
[pid 20602] close(3)                    = 0
[pid 20602] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20602] write(1, "executing program\n", 18executing program
) = 18
[pid 20602] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20602] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20602] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20602] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20602] exit_group(0)               = ?
[pid 20602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19762", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19762", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19762/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19762/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19762/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19762")                        = 0
mkdir("./19763", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20603
./strace-static-x86_64: Process 20603 attached
[pid 20603] set_robust_list(0x5555589fe660, 24) = 0
[pid 20603] chdir("./19763")            = 0
[pid 20603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20603] setpgid(0, 0)               = 0
[pid 20603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20603] write(3, "1000", 4)         = 4
[pid 20603] close(3)                    = 0
[pid 20603] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20603] write(1, "executing program\n", 18) = 18
[pid 20603] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20603] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20603] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20603] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20603] exit_group(0)               = ?
[pid 20603] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20603, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19763", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19763", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19763/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19763/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19763/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19763")                        = 0
mkdir("./19764", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20604 attached
, child_tidptr=0x5555589fe650) = 20604
[pid 20604] set_robust_list(0x5555589fe660, 24) = 0
[pid 20604] chdir("./19764")            = 0
[pid 20604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20604] setpgid(0, 0)               = 0
[pid 20604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20604] write(3, "1000", 4)         = 4
[pid 20604] close(3)                    = 0
[pid 20604] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20604] write(1, "executing program\n", 18) = 18
[pid 20604] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20604] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20604] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20604] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20604] exit_group(0)               = ?
[pid 20604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19764", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19764", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19764/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19764/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19764/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19764")                        = 0
mkdir("./19765", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20605 attached
, child_tidptr=0x5555589fe650) = 20605
[pid 20605] set_robust_list(0x5555589fe660, 24) = 0
[pid 20605] chdir("./19765")            = 0
[pid 20605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20605] setpgid(0, 0)               = 0
[pid 20605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20605] write(3, "1000", 4)         = 4
[pid 20605] close(3)                    = 0
[pid 20605] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20605] write(1, "executing program\n", 18) = 18
[pid 20605] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20605] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20605] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20605] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20605] exit_group(0)               = ?
[pid 20605] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20605, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19765", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19765", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19765/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19765/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19765/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19765")                        = 0
mkdir("./19766", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20606
./strace-static-x86_64: Process 20606 attached
[pid 20606] set_robust_list(0x5555589fe660, 24) = 0
[pid 20606] chdir("./19766")            = 0
[pid 20606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20606] setpgid(0, 0)               = 0
[pid 20606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20606] write(3, "1000", 4)         = 4
[pid 20606] close(3)                    = 0
[pid 20606] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20606] write(1, "executing program\n", 18) = 18
[pid 20606] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20606] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20606] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20606] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20606] exit_group(0)               = ?
[pid 20606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19766", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19766", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19766/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19766/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19766/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19766")                        = 0
mkdir("./19767", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20607 attached
, child_tidptr=0x5555589fe650) = 20607
[pid 20607] set_robust_list(0x5555589fe660, 24) = 0
[pid 20607] chdir("./19767")            = 0
[pid 20607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20607] setpgid(0, 0)               = 0
[pid 20607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20607] write(3, "1000", 4)         = 4
[pid 20607] close(3)                    = 0
[pid 20607] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20607] write(1, "executing program\n", 18executing program
) = 18
[pid 20607] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20607] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20607] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20607] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20607] exit_group(0)               = ?
[pid 20607] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20607, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19767", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19767", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19767/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19767/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19767/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19767")                        = 0
mkdir("./19768", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20608
./strace-static-x86_64: Process 20608 attached
[pid 20608] set_robust_list(0x5555589fe660, 24) = 0
[pid 20608] chdir("./19768")            = 0
[pid 20608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20608] setpgid(0, 0)               = 0
[pid 20608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20608] write(3, "1000", 4)         = 4
[pid 20608] close(3)                    = 0
[pid 20608] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20608] write(1, "executing program\n", 18) = 18
[pid 20608] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20608] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20608] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20608] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20608] exit_group(0)               = ?
[pid 20608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19768", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19768", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19768/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19768/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19768/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19768")                        = 0
mkdir("./19769", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20609
./strace-static-x86_64: Process 20609 attached
[pid 20609] set_robust_list(0x5555589fe660, 24) = 0
[pid 20609] chdir("./19769")            = 0
[pid 20609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20609] setpgid(0, 0)               = 0
[pid 20609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20609] write(3, "1000", 4)         = 4
[pid 20609] close(3)                    = 0
[pid 20609] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20609] write(1, "executing program\n", 18executing program
) = 18
[pid 20609] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20609] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20609] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20609] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20609] exit_group(0)               = ?
[pid 20609] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20609, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19769", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19769", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19769/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19769/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19769/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19769")                        = 0
mkdir("./19770", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20610
./strace-static-x86_64: Process 20610 attached
[pid 20610] set_robust_list(0x5555589fe660, 24) = 0
[pid 20610] chdir("./19770")            = 0
[pid 20610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20610] setpgid(0, 0)               = 0
[pid 20610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20610] write(3, "1000", 4)         = 4
[pid 20610] close(3)                    = 0
[pid 20610] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20610] write(1, "executing program\n", 18) = 18
[pid 20610] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20610] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20610] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20610] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20610] exit_group(0)               = ?
[pid 20610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19770", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19770", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19770/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19770/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19770/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19770")                        = 0
mkdir("./19771", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20611
./strace-static-x86_64: Process 20611 attached
[pid 20611] set_robust_list(0x5555589fe660, 24) = 0
[pid 20611] chdir("./19771")            = 0
[pid 20611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20611] setpgid(0, 0)               = 0
[pid 20611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20611] write(3, "1000", 4)         = 4
[pid 20611] close(3)                    = 0
[pid 20611] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20611] write(1, "executing program\n", 18executing program
) = 18
[pid 20611] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20611] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20611] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20611] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20611] exit_group(0)               = ?
[pid 20611] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20611, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19771", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19771", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19771/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19771/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19771/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19771")                        = 0
mkdir("./19772", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20612
./strace-static-x86_64: Process 20612 attached
[pid 20612] set_robust_list(0x5555589fe660, 24) = 0
[pid 20612] chdir("./19772")            = 0
[pid 20612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20612] setpgid(0, 0)               = 0
[pid 20612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20612] write(3, "1000", 4)         = 4
[pid 20612] close(3)                    = 0
[pid 20612] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20612] write(1, "executing program\n", 18executing program
) = 18
[pid 20612] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20612] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20612] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20612] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20612] exit_group(0)               = ?
[pid 20612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19772", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19772", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19772/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19772/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19772/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19772")                        = 0
mkdir("./19773", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20613
./strace-static-x86_64: Process 20613 attached
[pid 20613] set_robust_list(0x5555589fe660, 24) = 0
[pid 20613] chdir("./19773")            = 0
[pid 20613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20613] setpgid(0, 0)               = 0
[pid 20613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20613] write(3, "1000", 4)         = 4
[pid 20613] close(3)                    = 0
[pid 20613] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20613] write(1, "executing program\n", 18executing program
) = 18
[pid 20613] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20613] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20613] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20613] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20613] exit_group(0)               = ?
[pid 20613] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20613, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19773", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19773", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19773/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19773/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19773/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19773")                        = 0
mkdir("./19774", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20614
./strace-static-x86_64: Process 20614 attached
[pid 20614] set_robust_list(0x5555589fe660, 24) = 0
[pid 20614] chdir("./19774")            = 0
[pid 20614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20614] setpgid(0, 0)               = 0
[pid 20614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20614] write(3, "1000", 4)         = 4
[pid 20614] close(3)                    = 0
[pid 20614] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20614] write(1, "executing program\n", 18executing program
) = 18
[pid 20614] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20614] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20614] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20614] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20614] exit_group(0)               = ?
[pid 20614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19774", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19774", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19774/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19774/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19774/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19774")                        = 0
mkdir("./19775", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20616
./strace-static-x86_64: Process 20616 attached
[pid 20616] set_robust_list(0x5555589fe660, 24) = 0
[pid 20616] chdir("./19775")            = 0
[pid 20616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20616] setpgid(0, 0)               = 0
[pid 20616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20616] write(3, "1000", 4)         = 4
[pid 20616] close(3)                    = 0
[pid 20616] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20616] write(1, "executing program\n", 18executing program
) = 18
[pid 20616] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20616] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20616] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20616] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20616] exit_group(0)               = ?
[pid 20616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19775", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19775", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19775/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19775/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19775/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19775")                        = 0
mkdir("./19776", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20617 attached
, child_tidptr=0x5555589fe650) = 20617
[pid 20617] set_robust_list(0x5555589fe660, 24) = 0
[pid 20617] chdir("./19776")            = 0
[pid 20617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20617] setpgid(0, 0)               = 0
[pid 20617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20617] write(3, "1000", 4)         = 4
[pid 20617] close(3)                    = 0
[pid 20617] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20617] write(1, "executing program\n", 18executing program
) = 18
[pid 20617] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20617] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20617] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20617] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20617] exit_group(0)               = ?
[pid 20617] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20617, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19776", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19776", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19776/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19776/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19776/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19776")                        = 0
mkdir("./19777", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20618
./strace-static-x86_64: Process 20618 attached
[pid 20618] set_robust_list(0x5555589fe660, 24) = 0
[pid 20618] chdir("./19777")            = 0
[pid 20618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20618] setpgid(0, 0)               = 0
[pid 20618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20618] write(3, "1000", 4)         = 4
[pid 20618] close(3)                    = 0
[pid 20618] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20618] write(1, "executing program\n", 18) = 18
[pid 20618] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20618] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20618] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20618] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20618] exit_group(0)               = ?
[pid 20618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19777", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19777", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19777/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19777/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19777/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19777")                        = 0
mkdir("./19778", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20619
./strace-static-x86_64: Process 20619 attached
[pid 20619] set_robust_list(0x5555589fe660, 24) = 0
[pid 20619] chdir("./19778")            = 0
[pid 20619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20619] setpgid(0, 0)               = 0
[pid 20619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20619] write(3, "1000", 4)         = 4
[pid 20619] close(3)                    = 0
[pid 20619] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20619] write(1, "executing program\n", 18executing program
) = 18
[pid 20619] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20619] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20619] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20619] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20619] exit_group(0)               = ?
[pid 20619] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20619, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19778", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19778", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19778/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19778/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19778/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19778")                        = 0
mkdir("./19779", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20620
./strace-static-x86_64: Process 20620 attached
[pid 20620] set_robust_list(0x5555589fe660, 24) = 0
[pid 20620] chdir("./19779")            = 0
[pid 20620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20620] setpgid(0, 0)               = 0
[pid 20620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20620] write(3, "1000", 4)         = 4
[pid 20620] close(3)                    = 0
[pid 20620] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20620] write(1, "executing program\n", 18executing program
) = 18
[pid 20620] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20620] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20620] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20620] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20620] exit_group(0)               = ?
[pid 20620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19779", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19779", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19779/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19779/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19779/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19779")                        = 0
mkdir("./19780", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20621 attached
, child_tidptr=0x5555589fe650) = 20621
[pid 20621] set_robust_list(0x5555589fe660, 24) = 0
[pid 20621] chdir("./19780")            = 0
[pid 20621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20621] setpgid(0, 0)               = 0
[pid 20621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20621] write(3, "1000", 4)         = 4
[pid 20621] close(3)                    = 0
[pid 20621] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20621] write(1, "executing program\n", 18) = 18
[pid 20621] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20621] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20621] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20621] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20621] exit_group(0)               = ?
[pid 20621] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20621, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19780", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19780", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19780/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19780/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19780/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19780")                        = 0
mkdir("./19781", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20622
./strace-static-x86_64: Process 20622 attached
[pid 20622] set_robust_list(0x5555589fe660, 24) = 0
[pid 20622] chdir("./19781")            = 0
[pid 20622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20622] setpgid(0, 0)               = 0
[pid 20622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20622] write(3, "1000", 4)         = 4
[pid 20622] close(3)                    = 0
[pid 20622] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20622] write(1, "executing program\n", 18executing program
) = 18
[pid 20622] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20622] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20622] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20622] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20622] exit_group(0)               = ?
[pid 20622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19781", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19781", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19781/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19781/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19781/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19781")                        = 0
mkdir("./19782", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20623
./strace-static-x86_64: Process 20623 attached
[pid 20623] set_robust_list(0x5555589fe660, 24) = 0
[pid 20623] chdir("./19782")            = 0
[pid 20623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20623] setpgid(0, 0)               = 0
[pid 20623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20623] write(3, "1000", 4)         = 4
[pid 20623] close(3)                    = 0
[pid 20623] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20623] write(1, "executing program\n", 18) = 18
[pid 20623] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20623] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20623] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20623] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20623] exit_group(0)               = ?
[pid 20623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20623, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19782", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19782", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19782/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19782/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19782/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19782")                        = 0
mkdir("./19783", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20624
./strace-static-x86_64: Process 20624 attached
[pid 20624] set_robust_list(0x5555589fe660, 24) = 0
[pid 20624] chdir("./19783")            = 0
[pid 20624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20624] setpgid(0, 0)               = 0
[pid 20624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20624] write(3, "1000", 4)         = 4
[pid 20624] close(3)                    = 0
[pid 20624] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20624] write(1, "executing program\n", 18executing program
) = 18
[pid 20624] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20624] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20624] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20624] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20624] exit_group(0)               = ?
[pid 20624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19783", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19783", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19783/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19783/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19783/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19783")                        = 0
mkdir("./19784", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20625
./strace-static-x86_64: Process 20625 attached
[pid 20625] set_robust_list(0x5555589fe660, 24) = 0
[pid 20625] chdir("./19784")            = 0
[pid 20625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20625] setpgid(0, 0)               = 0
[pid 20625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20625] write(3, "1000", 4)         = 4
[pid 20625] close(3)                    = 0
[pid 20625] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20625] write(1, "executing program\n", 18executing program
) = 18
[pid 20625] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20625] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20625] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20625] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20625] exit_group(0)               = ?
[pid 20625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20625, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19784", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19784", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19784/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19784/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19784/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19784")                        = 0
mkdir("./19785", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20626
./strace-static-x86_64: Process 20626 attached
[pid 20626] set_robust_list(0x5555589fe660, 24) = 0
[pid 20626] chdir("./19785")            = 0
[pid 20626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20626] setpgid(0, 0)               = 0
[pid 20626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20626] write(3, "1000", 4)         = 4
[pid 20626] close(3)                    = 0
[pid 20626] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20626] write(1, "executing program\n", 18) = 18
[pid 20626] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20626] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20626] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20626] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20626] exit_group(0)               = ?
[pid 20626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19785", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19785", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19785/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19785/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19785/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19785")                        = 0
mkdir("./19786", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20627
./strace-static-x86_64: Process 20627 attached
[pid 20627] set_robust_list(0x5555589fe660, 24) = 0
[pid 20627] chdir("./19786")            = 0
[pid 20627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20627] setpgid(0, 0)               = 0
[pid 20627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20627] write(3, "1000", 4)         = 4
[pid 20627] close(3)                    = 0
[pid 20627] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20627] write(1, "executing program\n", 18executing program
) = 18
[pid 20627] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20627] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20627] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20627] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20627] exit_group(0)               = ?
[pid 20627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20627, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19786", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19786", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19786/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19786/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19786/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19786")                        = 0
mkdir("./19787", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20628 attached
, child_tidptr=0x5555589fe650) = 20628
[pid 20628] set_robust_list(0x5555589fe660, 24) = 0
[pid 20628] chdir("./19787")            = 0
[pid 20628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20628] setpgid(0, 0)               = 0
[pid 20628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20628] write(3, "1000", 4)         = 4
[pid 20628] close(3)                    = 0
[pid 20628] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20628] write(1, "executing program\n", 18) = 18
[pid 20628] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20628] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20628] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20628] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20628] exit_group(0)               = ?
[pid 20628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19787", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19787", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19787/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19787/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19787/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19787")                        = 0
mkdir("./19788", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20629 attached
, child_tidptr=0x5555589fe650) = 20629
[pid 20629] set_robust_list(0x5555589fe660, 24) = 0
[pid 20629] chdir("./19788")            = 0
[pid 20629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20629] setpgid(0, 0)               = 0
[pid 20629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20629] write(3, "1000", 4)         = 4
[pid 20629] close(3)                    = 0
[pid 20629] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20629] write(1, "executing program\n", 18) = 18
[pid 20629] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20629] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20629] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20629] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20629] exit_group(0)               = ?
[pid 20629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20629, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19788", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19788", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19788/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19788/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19788/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19788")                        = 0
mkdir("./19789", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20630
./strace-static-x86_64: Process 20630 attached
[pid 20630] set_robust_list(0x5555589fe660, 24) = 0
[pid 20630] chdir("./19789")            = 0
[pid 20630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20630] setpgid(0, 0)               = 0
[pid 20630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20630] write(3, "1000", 4)         = 4
[pid 20630] close(3)                    = 0
[pid 20630] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20630] write(1, "executing program\n", 18executing program
) = 18
[pid 20630] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20630] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20630] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20630] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20630] exit_group(0)               = ?
[pid 20630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19789", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19789", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19789/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19789/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19789/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19789")                        = 0
mkdir("./19790", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20631
./strace-static-x86_64: Process 20631 attached
[pid 20631] set_robust_list(0x5555589fe660, 24) = 0
[pid 20631] chdir("./19790")            = 0
[pid 20631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20631] setpgid(0, 0)               = 0
[pid 20631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20631] write(3, "1000", 4)         = 4
[pid 20631] close(3)                    = 0
[pid 20631] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20631] write(1, "executing program\n", 18executing program
) = 18
[pid 20631] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20631] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20631] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20631] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20631] exit_group(0)               = ?
[pid 20631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20631, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19790", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19790", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19790/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19790/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19790/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19790")                        = 0
mkdir("./19791", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20632
./strace-static-x86_64: Process 20632 attached
[pid 20632] set_robust_list(0x5555589fe660, 24) = 0
[pid 20632] chdir("./19791")            = 0
[pid 20632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20632] setpgid(0, 0)               = 0
[pid 20632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20632] write(3, "1000", 4)         = 4
[pid 20632] close(3)                    = 0
[pid 20632] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20632] write(1, "executing program\n", 18executing program
) = 18
[pid 20632] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20632] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20632] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20632] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20632] exit_group(0)               = ?
[pid 20632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19791", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19791", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19791/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19791/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19791/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19791")                        = 0
mkdir("./19792", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20633
./strace-static-x86_64: Process 20633 attached
[pid 20633] set_robust_list(0x5555589fe660, 24) = 0
[pid 20633] chdir("./19792")            = 0
[pid 20633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20633] setpgid(0, 0)               = 0
[pid 20633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20633] write(3, "1000", 4)         = 4
[pid 20633] close(3)                    = 0
[pid 20633] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20633] write(1, "executing program\n", 18) = 18
[pid 20633] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20633] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20633] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20633] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20633] exit_group(0)               = ?
[pid 20633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20633, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19792", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19792", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19792/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19792/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19792/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19792")                        = 0
mkdir("./19793", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20634
./strace-static-x86_64: Process 20634 attached
[pid 20634] set_robust_list(0x5555589fe660, 24) = 0
[pid 20634] chdir("./19793")            = 0
[pid 20634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20634] setpgid(0, 0)               = 0
[pid 20634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20634] write(3, "1000", 4)         = 4
[pid 20634] close(3)                    = 0
[pid 20634] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20634] write(1, "executing program\n", 18executing program
) = 18
[pid 20634] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20634] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20634] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20634] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20634] exit_group(0)               = ?
[pid 20634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19793", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19793", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19793/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19793/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19793/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19793")                        = 0
mkdir("./19794", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20635
./strace-static-x86_64: Process 20635 attached
[pid 20635] set_robust_list(0x5555589fe660, 24) = 0
[pid 20635] chdir("./19794")            = 0
[pid 20635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20635] setpgid(0, 0)               = 0
[pid 20635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20635] write(3, "1000", 4)         = 4
[pid 20635] close(3)                    = 0
[pid 20635] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20635] write(1, "executing program\n", 18executing program
) = 18
[pid 20635] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20635] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20635] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20635] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20635] exit_group(0)               = ?
[pid 20635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20635, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19794", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19794", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19794/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19794/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19794/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19794")                        = 0
mkdir("./19795", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20636 attached
, child_tidptr=0x5555589fe650) = 20636
[pid 20636] set_robust_list(0x5555589fe660, 24) = 0
[pid 20636] chdir("./19795")            = 0
[pid 20636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20636] setpgid(0, 0)               = 0
[pid 20636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20636] write(3, "1000", 4)         = 4
[pid 20636] close(3)                    = 0
[pid 20636] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20636] write(1, "executing program\n", 18executing program
) = 18
[pid 20636] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20636] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20636] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20636] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20636] exit_group(0)               = ?
[pid 20636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19795", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19795", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19795/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19795/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19795/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19795")                        = 0
mkdir("./19796", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20637
./strace-static-x86_64: Process 20637 attached
[pid 20637] set_robust_list(0x5555589fe660, 24) = 0
[pid 20637] chdir("./19796")            = 0
[pid 20637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20637] setpgid(0, 0)               = 0
[pid 20637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20637] write(3, "1000", 4)         = 4
[pid 20637] close(3)                    = 0
[pid 20637] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20637] write(1, "executing program\n", 18) = 18
[pid 20637] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20637] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20637] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20637] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20637] exit_group(0)               = ?
[pid 20637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20637, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19796", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19796", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19796/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19796/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19796/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19796")                        = 0
mkdir("./19797", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20638
./strace-static-x86_64: Process 20638 attached
[pid 20638] set_robust_list(0x5555589fe660, 24) = 0
[pid 20638] chdir("./19797")            = 0
[pid 20638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20638] setpgid(0, 0)               = 0
[pid 20638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20638] write(3, "1000", 4)         = 4
[pid 20638] close(3)                    = 0
[pid 20638] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20638] write(1, "executing program\n", 18executing program
) = 18
[pid 20638] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20638] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20638] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20638] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20638] exit_group(0)               = ?
[pid 20638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19797", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19797", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19797/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19797/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19797/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19797")                        = 0
mkdir("./19798", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20639 attached
, child_tidptr=0x5555589fe650) = 20639
[pid 20639] set_robust_list(0x5555589fe660, 24) = 0
[pid 20639] chdir("./19798")            = 0
[pid 20639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20639] setpgid(0, 0)               = 0
[pid 20639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20639] write(3, "1000", 4)         = 4
[pid 20639] close(3)                    = 0
[pid 20639] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20639] write(1, "executing program\n", 18executing program
) = 18
[pid 20639] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20639] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20639] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20639] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20639] exit_group(0)               = ?
[pid 20639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20639, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19798", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19798", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19798/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19798/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19798/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19798")                        = 0
mkdir("./19799", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20640
./strace-static-x86_64: Process 20640 attached
[pid 20640] set_robust_list(0x5555589fe660, 24) = 0
[pid 20640] chdir("./19799")            = 0
[pid 20640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20640] setpgid(0, 0)               = 0
[pid 20640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20640] write(3, "1000", 4)         = 4
[pid 20640] close(3)                    = 0
[pid 20640] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20640] write(1, "executing program\n", 18executing program
) = 18
[pid 20640] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20640] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20640] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20640] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20640] exit_group(0)               = ?
[pid 20640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19799", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19799", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19799/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19799/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19799/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19799")                        = 0
mkdir("./19800", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20641
./strace-static-x86_64: Process 20641 attached
[pid 20641] set_robust_list(0x5555589fe660, 24) = 0
[pid 20641] chdir("./19800")            = 0
[pid 20641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20641] setpgid(0, 0)               = 0
[pid 20641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20641] write(3, "1000", 4)         = 4
[pid 20641] close(3)                    = 0
[pid 20641] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20641] write(1, "executing program\n", 18executing program
) = 18
[pid 20641] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20641] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20641] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20641] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20641] exit_group(0)               = ?
[pid 20641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20641, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19800", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19800", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19800/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19800/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19800/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19800")                        = 0
mkdir("./19801", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20642
./strace-static-x86_64: Process 20642 attached
[pid 20642] set_robust_list(0x5555589fe660, 24) = 0
[pid 20642] chdir("./19801")            = 0
[pid 20642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20642] setpgid(0, 0)               = 0
[pid 20642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20642] write(3, "1000", 4)         = 4
[pid 20642] close(3)                    = 0
executing program
[pid 20642] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20642] write(1, "executing program\n", 18) = 18
[pid 20642] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20642] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20642] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20642] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20642] exit_group(0)               = ?
[pid 20642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19801", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19801", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19801/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19801/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19801/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19801")                        = 0
mkdir("./19802", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20643 attached
, child_tidptr=0x5555589fe650) = 20643
[pid 20643] set_robust_list(0x5555589fe660, 24) = 0
[pid 20643] chdir("./19802")            = 0
[pid 20643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20643] setpgid(0, 0)               = 0
[pid 20643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20643] write(3, "1000", 4)         = 4
[pid 20643] close(3)                    = 0
[pid 20643] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20643] write(1, "executing program\n", 18) = 18
[pid 20643] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20643] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20643] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20643] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20643] exit_group(0)               = ?
[pid 20643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20643, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19802", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19802", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19802/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19802/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19802/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19802")                        = 0
mkdir("./19803", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20644
./strace-static-x86_64: Process 20644 attached
[pid 20644] set_robust_list(0x5555589fe660, 24) = 0
[pid 20644] chdir("./19803")            = 0
[pid 20644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20644] setpgid(0, 0)               = 0
[pid 20644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20644] write(3, "1000", 4)         = 4
[pid 20644] close(3)                    = 0
[pid 20644] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20644] write(1, "executing program\n", 18) = 18
[pid 20644] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20644] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20644] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20644] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20644] exit_group(0)               = ?
[pid 20644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19803", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19803", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19803/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19803/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19803/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19803")                        = 0
mkdir("./19804", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20645 attached
, child_tidptr=0x5555589fe650) = 20645
[pid 20645] set_robust_list(0x5555589fe660, 24) = 0
[pid 20645] chdir("./19804")            = 0
[pid 20645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20645] setpgid(0, 0)               = 0
[pid 20645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20645] write(3, "1000", 4)         = 4
[pid 20645] close(3)                    = 0
[pid 20645] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20645] write(1, "executing program\n", 18) = 18
[pid 20645] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20645] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20645] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20645] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20645] exit_group(0)               = ?
[pid 20645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20645, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19804", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19804", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19804/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19804/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19804/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19804")                        = 0
mkdir("./19805", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20646 attached
, child_tidptr=0x5555589fe650) = 20646
[pid 20646] set_robust_list(0x5555589fe660, 24) = 0
[pid 20646] chdir("./19805")            = 0
[pid 20646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20646] setpgid(0, 0)               = 0
[pid 20646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20646] write(3, "1000", 4)         = 4
[pid 20646] close(3)                    = 0
[pid 20646] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20646] write(1, "executing program\n", 18executing program
) = 18
[pid 20646] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20646] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20646] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20646] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20646] exit_group(0)               = ?
[pid 20646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19805", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19805", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19805/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19805/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19805/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19805")                        = 0
mkdir("./19806", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20647
./strace-static-x86_64: Process 20647 attached
[pid 20647] set_robust_list(0x5555589fe660, 24) = 0
[pid 20647] chdir("./19806")            = 0
[pid 20647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20647] setpgid(0, 0)               = 0
[pid 20647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20647] write(3, "1000", 4)         = 4
[pid 20647] close(3)                    = 0
[pid 20647] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20647] write(1, "executing program\n", 18executing program
) = 18
[pid 20647] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20647] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20647] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20647] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20647] exit_group(0)               = ?
[pid 20647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20647, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19806", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19806", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19806/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19806/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19806/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19806")                        = 0
mkdir("./19807", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20648
./strace-static-x86_64: Process 20648 attached
[pid 20648] set_robust_list(0x5555589fe660, 24) = 0
[pid 20648] chdir("./19807")            = 0
[pid 20648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20648] setpgid(0, 0)               = 0
[pid 20648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20648] write(3, "1000", 4)         = 4
[pid 20648] close(3)                    = 0
[pid 20648] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20648] write(1, "executing program\n", 18executing program
) = 18
[pid 20648] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20648] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20648] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20648] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20648] exit_group(0)               = ?
[pid 20648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19807", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19807", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19807/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19807/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19807/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19807")                        = 0
mkdir("./19808", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20649
./strace-static-x86_64: Process 20649 attached
[pid 20649] set_robust_list(0x5555589fe660, 24) = 0
[pid 20649] chdir("./19808")            = 0
[pid 20649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20649] setpgid(0, 0)               = 0
[pid 20649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20649] write(3, "1000", 4)         = 4
[pid 20649] close(3)                    = 0
[pid 20649] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20649] write(1, "executing program\n", 18executing program
) = 18
[pid 20649] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20649] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20649] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20649] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20649] exit_group(0)               = ?
[pid 20649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20649, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19808", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19808", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19808/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19808/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19808/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19808")                        = 0
mkdir("./19809", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20650 attached
, child_tidptr=0x5555589fe650) = 20650
[pid 20650] set_robust_list(0x5555589fe660, 24) = 0
[pid 20650] chdir("./19809")            = 0
[pid 20650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20650] setpgid(0, 0)               = 0
[pid 20650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20650] write(3, "1000", 4)         = 4
[pid 20650] close(3)                    = 0
[pid 20650] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20650] write(1, "executing program\n", 18) = 18
[pid 20650] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20650] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20650] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20650] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20650] exit_group(0)               = ?
[pid 20650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19809", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19809", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19809/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19809/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19809/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19809")                        = 0
mkdir("./19810", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20651
./strace-static-x86_64: Process 20651 attached
[pid 20651] set_robust_list(0x5555589fe660, 24) = 0
[pid 20651] chdir("./19810")            = 0
[pid 20651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20651] setpgid(0, 0)               = 0
[pid 20651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20651] write(3, "1000", 4)         = 4
[pid 20651] close(3)                    = 0
[pid 20651] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20651] write(1, "executing program\n", 18executing program
) = 18
[pid 20651] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20651] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20651] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20651] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20651] exit_group(0)               = ?
[pid 20651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20651, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19810", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19810", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19810/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19810/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19810/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19810")                        = 0
mkdir("./19811", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20652 attached
, child_tidptr=0x5555589fe650) = 20652
[pid 20652] set_robust_list(0x5555589fe660, 24) = 0
[pid 20652] chdir("./19811")            = 0
[pid 20652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20652] setpgid(0, 0)               = 0
[pid 20652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20652] write(3, "1000", 4)         = 4
[pid 20652] close(3)                    = 0
[pid 20652] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20652] write(1, "executing program\n", 18executing program
) = 18
[pid 20652] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20652] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20652] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20652] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20652] exit_group(0)               = ?
[pid 20652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19811", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19811", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19811/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19811/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19811/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19811")                        = 0
mkdir("./19812", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20653 attached
, child_tidptr=0x5555589fe650) = 20653
[pid 20653] set_robust_list(0x5555589fe660, 24) = 0
[pid 20653] chdir("./19812")            = 0
[pid 20653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20653] setpgid(0, 0)               = 0
[pid 20653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20653] write(3, "1000", 4)         = 4
[pid 20653] close(3)                    = 0
[pid 20653] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20653] write(1, "executing program\n", 18executing program
) = 18
[pid 20653] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20653] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20653] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20653] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20653] exit_group(0)               = ?
[pid 20653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20653, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19812", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19812", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19812/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19812/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19812/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19812")                        = 0
mkdir("./19813", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20654 attached
, child_tidptr=0x5555589fe650) = 20654
[pid 20654] set_robust_list(0x5555589fe660, 24) = 0
[pid 20654] chdir("./19813")            = 0
[pid 20654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20654] setpgid(0, 0)               = 0
[pid 20654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20654] write(3, "1000", 4)         = 4
[pid 20654] close(3)                    = 0
[pid 20654] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20654] write(1, "executing program\n", 18) = 18
[pid 20654] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20654] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20654] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20654] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20654] exit_group(0)               = ?
[pid 20654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19813", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19813", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19813/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19813/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19813/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19813")                        = 0
mkdir("./19814", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20655 attached
, child_tidptr=0x5555589fe650) = 20655
[pid 20655] set_robust_list(0x5555589fe660, 24) = 0
[pid 20655] chdir("./19814")            = 0
[pid 20655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20655] setpgid(0, 0)               = 0
[pid 20655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20655] write(3, "1000", 4)         = 4
[pid 20655] close(3)                    = 0
[pid 20655] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20655] write(1, "executing program\n", 18) = 18
[pid 20655] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20655] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20655] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20655] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20655] exit_group(0)               = ?
[pid 20655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20655, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19814", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19814", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19814/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19814/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19814/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19814")                        = 0
mkdir("./19815", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20656 attached
, child_tidptr=0x5555589fe650) = 20656
[pid 20656] set_robust_list(0x5555589fe660, 24) = 0
[pid 20656] chdir("./19815")            = 0
[pid 20656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20656] setpgid(0, 0)               = 0
[pid 20656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20656] write(3, "1000", 4)         = 4
[pid 20656] close(3)                    = 0
[pid 20656] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20656] write(1, "executing program\n", 18) = 18
[pid 20656] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20656] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20656] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20656] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20656] exit_group(0)               = ?
[pid 20656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19815", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19815", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19815/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19815/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19815/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19815")                        = 0
mkdir("./19816", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20657 attached
, child_tidptr=0x5555589fe650) = 20657
[pid 20657] set_robust_list(0x5555589fe660, 24) = 0
[pid 20657] chdir("./19816")            = 0
[pid 20657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20657] setpgid(0, 0)               = 0
[pid 20657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20657] write(3, "1000", 4)         = 4
[pid 20657] close(3)                    = 0
[pid 20657] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20657] write(1, "executing program\n", 18executing program
) = 18
[pid 20657] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20657] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20657] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20657] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20657] exit_group(0)               = ?
[pid 20657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20657, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19816", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19816", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19816/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19816/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19816/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19816")                        = 0
mkdir("./19817", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20658 attached
, child_tidptr=0x5555589fe650) = 20658
[pid 20658] set_robust_list(0x5555589fe660, 24) = 0
[pid 20658] chdir("./19817")            = 0
[pid 20658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20658] setpgid(0, 0)               = 0
[pid 20658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20658] write(3, "1000", 4)         = 4
[pid 20658] close(3)                    = 0
[pid 20658] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20658] write(1, "executing program\n", 18executing program
) = 18
[pid 20658] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20658] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20658] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20658] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20658] exit_group(0)               = ?
[pid 20658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19817", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19817", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19817/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19817/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19817/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19817")                        = 0
mkdir("./19818", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20659
./strace-static-x86_64: Process 20659 attached
[pid 20659] set_robust_list(0x5555589fe660, 24) = 0
[pid 20659] chdir("./19818")            = 0
[pid 20659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20659] setpgid(0, 0)               = 0
[pid 20659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20659] write(3, "1000", 4)         = 4
[pid 20659] close(3)                    = 0
[pid 20659] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20659] write(1, "executing program\n", 18executing program
) = 18
[pid 20659] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20659] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20659] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20659] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20659] exit_group(0)               = ?
[pid 20659] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20659, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19818", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19818", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19818/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19818/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19818/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19818")                        = 0
mkdir("./19819", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20660
./strace-static-x86_64: Process 20660 attached
[pid 20660] set_robust_list(0x5555589fe660, 24) = 0
[pid 20660] chdir("./19819")            = 0
[pid 20660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20660] setpgid(0, 0)               = 0
[pid 20660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20660] write(3, "1000", 4)         = 4
[pid 20660] close(3)                    = 0
[pid 20660] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20660] write(1, "executing program\n", 18executing program
) = 18
[pid 20660] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20660] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20660] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20660] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20660] exit_group(0)               = ?
[pid 20660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19819", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19819", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19819/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19819/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19819/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19819")                        = 0
mkdir("./19820", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20661
./strace-static-x86_64: Process 20661 attached
[pid 20661] set_robust_list(0x5555589fe660, 24) = 0
[pid 20661] chdir("./19820")            = 0
[pid 20661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20661] setpgid(0, 0)               = 0
[pid 20661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20661] write(3, "1000", 4)         = 4
[pid 20661] close(3)                    = 0
[pid 20661] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20661] write(1, "executing program\n", 18executing program
) = 18
[pid 20661] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20661] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20661] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20661] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20661] exit_group(0)               = ?
[pid 20661] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20661, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19820", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19820", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19820/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19820/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19820/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19820")                        = 0
mkdir("./19821", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20662 attached
, child_tidptr=0x5555589fe650) = 20662
[pid 20662] set_robust_list(0x5555589fe660, 24) = 0
[pid 20662] chdir("./19821")            = 0
[pid 20662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20662] setpgid(0, 0)               = 0
[pid 20662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20662] write(3, "1000", 4)         = 4
[pid 20662] close(3)                    = 0
[pid 20662] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20662] write(1, "executing program\n", 18executing program
) = 18
[pid 20662] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20662] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20662] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20662] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20662] exit_group(0)               = ?
[pid 20662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19821", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19821", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19821/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19821/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19821/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19821")                        = 0
mkdir("./19822", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20663 attached
, child_tidptr=0x5555589fe650) = 20663
[pid 20663] set_robust_list(0x5555589fe660, 24) = 0
[pid 20663] chdir("./19822")            = 0
[pid 20663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20663] setpgid(0, 0)               = 0
[pid 20663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20663] write(3, "1000", 4)         = 4
[pid 20663] close(3)                    = 0
[pid 20663] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20663] write(1, "executing program\n", 18executing program
) = 18
[pid 20663] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20663] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20663] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20663] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20663] exit_group(0)               = ?
[pid 20663] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20663, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19822", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19822", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19822/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19822/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19822/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19822")                        = 0
mkdir("./19823", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20664
./strace-static-x86_64: Process 20664 attached
[pid 20664] set_robust_list(0x5555589fe660, 24) = 0
[pid 20664] chdir("./19823")            = 0
[pid 20664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20664] setpgid(0, 0)               = 0
[pid 20664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20664] write(3, "1000", 4)         = 4
[pid 20664] close(3)                    = 0
[pid 20664] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20664] write(1, "executing program\n", 18executing program
) = 18
[pid 20664] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20664] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20664] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20664] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20664] exit_group(0)               = ?
[pid 20664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19823", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19823", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19823/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19823/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19823/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19823")                        = 0
mkdir("./19824", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20665 attached
, child_tidptr=0x5555589fe650) = 20665
[pid 20665] set_robust_list(0x5555589fe660, 24) = 0
[pid 20665] chdir("./19824")            = 0
[pid 20665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20665] setpgid(0, 0)               = 0
[pid 20665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20665] write(3, "1000", 4)         = 4
[pid 20665] close(3)                    = 0
[pid 20665] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20665] write(1, "executing program\n", 18) = 18
[pid 20665] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20665] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20665] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20665] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20665] exit_group(0)               = ?
[pid 20665] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20665, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19824", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19824", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19824/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19824/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19824/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19824")                        = 0
mkdir("./19825", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20666 attached
, child_tidptr=0x5555589fe650) = 20666
[pid 20666] set_robust_list(0x5555589fe660, 24) = 0
[pid 20666] chdir("./19825")            = 0
[pid 20666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20666] setpgid(0, 0)               = 0
[pid 20666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20666] write(3, "1000", 4)         = 4
[pid 20666] close(3)                    = 0
[pid 20666] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20666] write(1, "executing program\n", 18) = 18
[pid 20666] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20666] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20666] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20666] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20666] exit_group(0)               = ?
[pid 20666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19825", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19825", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19825/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19825/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19825/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19825")                        = 0
mkdir("./19826", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20667
./strace-static-x86_64: Process 20667 attached
[pid 20667] set_robust_list(0x5555589fe660, 24) = 0
[pid 20667] chdir("./19826")            = 0
[pid 20667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20667] setpgid(0, 0)               = 0
[pid 20667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20667] write(3, "1000", 4)         = 4
[pid 20667] close(3)                    = 0
[pid 20667] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20667] write(1, "executing program\n", 18executing program
) = 18
[pid 20667] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20667] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20667] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20667] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20667] exit_group(0)               = ?
[pid 20667] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20667, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19826", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19826", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19826/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19826/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19826/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19826")                        = 0
mkdir("./19827", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20668 attached
, child_tidptr=0x5555589fe650) = 20668
[pid 20668] set_robust_list(0x5555589fe660, 24) = 0
[pid 20668] chdir("./19827")            = 0
[pid 20668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20668] setpgid(0, 0)               = 0
[pid 20668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20668] write(3, "1000", 4)         = 4
[pid 20668] close(3)                    = 0
[pid 20668] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20668] write(1, "executing program\n", 18executing program
) = 18
[pid 20668] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20668] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20668] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20668] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20668] exit_group(0)               = ?
[pid 20668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19827", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19827", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19827/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19827/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19827/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19827")                        = 0
mkdir("./19828", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20669
./strace-static-x86_64: Process 20669 attached
[pid 20669] set_robust_list(0x5555589fe660, 24) = 0
[pid 20669] chdir("./19828")            = 0
[pid 20669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20669] setpgid(0, 0)               = 0
[pid 20669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20669] write(3, "1000", 4)         = 4
[pid 20669] close(3)                    = 0
[pid 20669] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20669] write(1, "executing program\n", 18) = 18
[pid 20669] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20669] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20669] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20669] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20669] exit_group(0)               = ?
[pid 20669] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20669, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19828", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19828", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19828/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19828/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19828/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19828")                        = 0
mkdir("./19829", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20670 attached
, child_tidptr=0x5555589fe650) = 20670
[pid 20670] set_robust_list(0x5555589fe660, 24) = 0
[pid 20670] chdir("./19829")            = 0
[pid 20670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20670] setpgid(0, 0)               = 0
[pid 20670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20670] write(3, "1000", 4)         = 4
[pid 20670] close(3)                    = 0
[pid 20670] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20670] write(1, "executing program\n", 18executing program
) = 18
[pid 20670] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20670] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20670] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20670] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20670] exit_group(0)               = ?
[pid 20670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19829", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19829", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19829/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19829/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19829/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19829")                        = 0
mkdir("./19830", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20671
./strace-static-x86_64: Process 20671 attached
[pid 20671] set_robust_list(0x5555589fe660, 24) = 0
[pid 20671] chdir("./19830")            = 0
[pid 20671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20671] setpgid(0, 0)               = 0
[pid 20671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20671] write(3, "1000", 4)         = 4
[pid 20671] close(3)                    = 0
[pid 20671] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20671] write(1, "executing program\n", 18executing program
) = 18
[pid 20671] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20671] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20671] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20671] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20671] exit_group(0)               = ?
[pid 20671] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20671, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19830", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19830", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19830/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19830/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19830/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19830")                        = 0
mkdir("./19831", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20672
./strace-static-x86_64: Process 20672 attached
[pid 20672] set_robust_list(0x5555589fe660, 24) = 0
[pid 20672] chdir("./19831")            = 0
[pid 20672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20672] setpgid(0, 0)               = 0
[pid 20672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20672] write(3, "1000", 4)         = 4
[pid 20672] close(3)                    = 0
[pid 20672] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20672] write(1, "executing program\n", 18executing program
) = 18
[pid 20672] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20672] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20672] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20672] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20672] exit_group(0)               = ?
[pid 20672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19831", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19831", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19831/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19831/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19831/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19831")                        = 0
mkdir("./19832", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20673 attached
, child_tidptr=0x5555589fe650) = 20673
[pid 20673] set_robust_list(0x5555589fe660, 24) = 0
[pid 20673] chdir("./19832")            = 0
[pid 20673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20673] setpgid(0, 0)               = 0
[pid 20673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20673] write(3, "1000", 4)         = 4
[pid 20673] close(3)                    = 0
[pid 20673] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20673] write(1, "executing program\n", 18executing program
) = 18
[pid 20673] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20673] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20673] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20673] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20673] exit_group(0)               = ?
[pid 20673] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20673, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19832", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19832", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19832/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19832/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19832/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19832")                        = 0
mkdir("./19833", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20674
./strace-static-x86_64: Process 20674 attached
[pid 20674] set_robust_list(0x5555589fe660, 24) = 0
[pid 20674] chdir("./19833")            = 0
[pid 20674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20674] setpgid(0, 0)               = 0
[pid 20674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20674] write(3, "1000", 4)         = 4
[pid 20674] close(3)                    = 0
[pid 20674] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20674] write(1, "executing program\n", 18executing program
) = 18
[pid 20674] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20674] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20674] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20674] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20674] exit_group(0)               = ?
[pid 20674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19833", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19833", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19833/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19833/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19833/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19833")                        = 0
mkdir("./19834", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20675 attached
, child_tidptr=0x5555589fe650) = 20675
[pid 20675] set_robust_list(0x5555589fe660, 24) = 0
[pid 20675] chdir("./19834")            = 0
[pid 20675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20675] setpgid(0, 0)               = 0
[pid 20675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20675] write(3, "1000", 4)         = 4
[pid 20675] close(3)                    = 0
[pid 20675] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20675] write(1, "executing program\n", 18executing program
) = 18
[pid 20675] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20675] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20675] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20675] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20675] exit_group(0)               = ?
[pid 20675] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20675, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19834", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19834", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19834/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19834/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19834/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19834")                        = 0
mkdir("./19835", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20676 attached
, child_tidptr=0x5555589fe650) = 20676
[pid 20676] set_robust_list(0x5555589fe660, 24) = 0
[pid 20676] chdir("./19835")            = 0
[pid 20676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20676] setpgid(0, 0)               = 0
[pid 20676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20676] write(3, "1000", 4)         = 4
[pid 20676] close(3)                    = 0
[pid 20676] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20676] write(1, "executing program\n", 18executing program
) = 18
[pid 20676] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20676] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20676] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20676] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20676] exit_group(0)               = ?
[pid 20676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19835", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19835", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19835/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19835/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19835/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19835")                        = 0
mkdir("./19836", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20677
./strace-static-x86_64: Process 20677 attached
[pid 20677] set_robust_list(0x5555589fe660, 24) = 0
[pid 20677] chdir("./19836")            = 0
[pid 20677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20677] setpgid(0, 0)               = 0
[pid 20677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20677] write(3, "1000", 4)         = 4
[pid 20677] close(3)                    = 0
[pid 20677] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20677] write(1, "executing program\n", 18executing program
) = 18
[pid 20677] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20677] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20677] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20677] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20677] exit_group(0)               = ?
[pid 20677] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20677, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19836", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19836", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19836/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19836/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19836/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19836")                        = 0
mkdir("./19837", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20678
./strace-static-x86_64: Process 20678 attached
[pid 20678] set_robust_list(0x5555589fe660, 24) = 0
[pid 20678] chdir("./19837")            = 0
[pid 20678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20678] setpgid(0, 0)               = 0
[pid 20678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20678] write(3, "1000", 4)         = 4
[pid 20678] close(3)                    = 0
[pid 20678] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20678] write(1, "executing program\n", 18executing program
) = 18
[pid 20678] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20678] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20678] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20678] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20678] exit_group(0)               = ?
[pid 20678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19837", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19837", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19837/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19837/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19837/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19837")                        = 0
mkdir("./19838", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20679
./strace-static-x86_64: Process 20679 attached
[pid 20679] set_robust_list(0x5555589fe660, 24) = 0
[pid 20679] chdir("./19838")            = 0
[pid 20679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20679] setpgid(0, 0)               = 0
[pid 20679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20679] write(3, "1000", 4)         = 4
[pid 20679] close(3)                    = 0
[pid 20679] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20679] write(1, "executing program\n", 18executing program
) = 18
[pid 20679] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20679] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20679] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20679] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20679] exit_group(0)               = ?
[pid 20679] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20679, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19838", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19838", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19838/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19838/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19838/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19838")                        = 0
mkdir("./19839", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20680
./strace-static-x86_64: Process 20680 attached
[pid 20680] set_robust_list(0x5555589fe660, 24) = 0
[pid 20680] chdir("./19839")            = 0
[pid 20680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20680] setpgid(0, 0)               = 0
[pid 20680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20680] write(3, "1000", 4)         = 4
[pid 20680] close(3)                    = 0
[pid 20680] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20680] write(1, "executing program\n", 18executing program
) = 18
[pid 20680] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20680] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20680] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20680] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20680] exit_group(0)               = ?
[pid 20680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19839", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19839", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19839/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19839/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19839/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19839")                        = 0
mkdir("./19840", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20681 attached
, child_tidptr=0x5555589fe650) = 20681
[pid 20681] set_robust_list(0x5555589fe660, 24) = 0
[pid 20681] chdir("./19840")            = 0
[pid 20681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20681] setpgid(0, 0)               = 0
[pid 20681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20681] write(3, "1000", 4)         = 4
[pid 20681] close(3)                    = 0
[pid 20681] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20681] write(1, "executing program\n", 18executing program
) = 18
[pid 20681] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20681] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20681] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20681] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20681] exit_group(0)               = ?
[pid 20681] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20681, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19840", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19840", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19840/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19840/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19840/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19840")                        = 0
mkdir("./19841", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20682
./strace-static-x86_64: Process 20682 attached
[pid 20682] set_robust_list(0x5555589fe660, 24) = 0
[pid 20682] chdir("./19841")            = 0
[pid 20682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20682] setpgid(0, 0)               = 0
[pid 20682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20682] write(3, "1000", 4)         = 4
[pid 20682] close(3)                    = 0
[pid 20682] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20682] write(1, "executing program\n", 18executing program
) = 18
[pid 20682] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20682] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20682] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20682] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20682] exit_group(0)               = ?
[pid 20682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19841", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19841", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19841/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19841/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19841/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19841")                        = 0
mkdir("./19842", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20683 attached
, child_tidptr=0x5555589fe650) = 20683
[pid 20683] set_robust_list(0x5555589fe660, 24) = 0
[pid 20683] chdir("./19842")            = 0
[pid 20683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20683] setpgid(0, 0)               = 0
[pid 20683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20683] write(3, "1000", 4)         = 4
[pid 20683] close(3)                    = 0
[pid 20683] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20683] write(1, "executing program\n", 18executing program
) = 18
[pid 20683] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20683] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20683] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20683] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20683] exit_group(0)               = ?
[pid 20683] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20683, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19842", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19842", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19842/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19842/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19842/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19842")                        = 0
mkdir("./19843", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20684 attached
, child_tidptr=0x5555589fe650) = 20684
[pid 20684] set_robust_list(0x5555589fe660, 24) = 0
[pid 20684] chdir("./19843")            = 0
[pid 20684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20684] setpgid(0, 0)               = 0
[pid 20684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20684] write(3, "1000", 4)         = 4
[pid 20684] close(3)                    = 0
[pid 20684] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20684] write(1, "executing program\n", 18) = 18
[pid 20684] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20684] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20684] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20684] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20684] exit_group(0)               = ?
[pid 20684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19843", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19843", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19843/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19843/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19843/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19843")                        = 0
mkdir("./19844", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20685
./strace-static-x86_64: Process 20685 attached
[pid 20685] set_robust_list(0x5555589fe660, 24) = 0
[pid 20685] chdir("./19844")            = 0
[pid 20685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20685] setpgid(0, 0)               = 0
[pid 20685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20685] write(3, "1000", 4)         = 4
[pid 20685] close(3)                    = 0
[pid 20685] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20685] write(1, "executing program\n", 18executing program
) = 18
[pid 20685] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20685] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20685] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20685] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20685] exit_group(0)               = ?
[pid 20685] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20685, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19844", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19844", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19844/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19844/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19844/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19844")                        = 0
mkdir("./19845", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20686
./strace-static-x86_64: Process 20686 attached
[pid 20686] set_robust_list(0x5555589fe660, 24) = 0
[pid 20686] chdir("./19845")            = 0
[pid 20686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20686] setpgid(0, 0)               = 0
[pid 20686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20686] write(3, "1000", 4)         = 4
[pid 20686] close(3)                    = 0
[pid 20686] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20686] write(1, "executing program\n", 18executing program
) = 18
[pid 20686] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20686] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20686] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20686] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20686] exit_group(0)               = ?
[pid 20686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19845", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19845", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19845/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19845/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19845/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19845")                        = 0
mkdir("./19846", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20687 attached
, child_tidptr=0x5555589fe650) = 20687
[pid 20687] set_robust_list(0x5555589fe660, 24) = 0
[pid 20687] chdir("./19846")            = 0
[pid 20687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20687] setpgid(0, 0)               = 0
[pid 20687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20687] write(3, "1000", 4)         = 4
[pid 20687] close(3)                    = 0
[pid 20687] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20687] write(1, "executing program\n", 18executing program
) = 18
[pid 20687] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20687] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20687] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20687] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20687] exit_group(0)               = ?
[pid 20687] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20687, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19846", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19846", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19846/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19846/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19846/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19846")                        = 0
mkdir("./19847", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20688
./strace-static-x86_64: Process 20688 attached
[pid 20688] set_robust_list(0x5555589fe660, 24) = 0
[pid 20688] chdir("./19847")            = 0
[pid 20688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20688] setpgid(0, 0)               = 0
[pid 20688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20688] write(3, "1000", 4)         = 4
[pid 20688] close(3)                    = 0
[pid 20688] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20688] write(1, "executing program\n", 18executing program
) = 18
[pid 20688] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20688] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20688] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20688] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20688] exit_group(0)               = ?
[pid 20688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19847", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19847", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19847/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19847/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19847/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19847")                        = 0
mkdir("./19848", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20690 attached
, child_tidptr=0x5555589fe650) = 20690
[pid 20690] set_robust_list(0x5555589fe660, 24) = 0
[pid 20690] chdir("./19848")            = 0
[pid 20690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20690] setpgid(0, 0)               = 0
[pid 20690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20690] write(3, "1000", 4)         = 4
[pid 20690] close(3)                    = 0
[pid 20690] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20690] write(1, "executing program\n", 18) = 18
[pid 20690] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20690] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20690] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20690] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20690] exit_group(0)               = ?
[pid 20690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19848", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19848", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19848/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19848/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19848/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19848")                        = 0
mkdir("./19849", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20691 attached
, child_tidptr=0x5555589fe650) = 20691
[pid 20691] set_robust_list(0x5555589fe660, 24) = 0
[pid 20691] chdir("./19849")            = 0
[pid 20691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20691] setpgid(0, 0)               = 0
[pid 20691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20691] write(3, "1000", 4)         = 4
[pid 20691] close(3)                    = 0
[pid 20691] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20691] write(1, "executing program\n", 18executing program
) = 18
[pid 20691] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20691] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20691] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20691] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20691] exit_group(0)               = ?
[pid 20691] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20691, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19849", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19849", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19849/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19849/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19849/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19849")                        = 0
mkdir("./19850", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20692
./strace-static-x86_64: Process 20692 attached
[pid 20692] set_robust_list(0x5555589fe660, 24) = 0
[pid 20692] chdir("./19850")            = 0
[pid 20692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20692] setpgid(0, 0)               = 0
[pid 20692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20692] write(3, "1000", 4)         = 4
[pid 20692] close(3)                    = 0
[pid 20692] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20692] write(1, "executing program\n", 18executing program
) = 18
[pid 20692] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20692] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20692] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20692] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20692] exit_group(0)               = ?
[pid 20692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19850", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19850", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19850/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19850/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19850/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19850")                        = 0
mkdir("./19851", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20693 attached
, child_tidptr=0x5555589fe650) = 20693
[pid 20693] set_robust_list(0x5555589fe660, 24) = 0
[pid 20693] chdir("./19851")            = 0
[pid 20693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20693] setpgid(0, 0)               = 0
[pid 20693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20693] write(3, "1000", 4)         = 4
[pid 20693] close(3)                    = 0
[pid 20693] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20693] write(1, "executing program\n", 18executing program
) = 18
[pid 20693] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20693] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20693] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20693] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20693] exit_group(0)               = ?
[pid 20693] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20693, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19851", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19851", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19851/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19851/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19851/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19851")                        = 0
mkdir("./19852", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20694
./strace-static-x86_64: Process 20694 attached
[pid 20694] set_robust_list(0x5555589fe660, 24) = 0
[pid 20694] chdir("./19852")            = 0
[pid 20694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20694] setpgid(0, 0)               = 0
[pid 20694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20694] write(3, "1000", 4)         = 4
[pid 20694] close(3)                    = 0
[pid 20694] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20694] write(1, "executing program\n", 18executing program
) = 18
[pid 20694] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20694] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20694] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20694] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20694] exit_group(0)               = ?
[pid 20694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19852", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19852", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19852/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19852/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19852/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19852")                        = 0
mkdir("./19853", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20695 attached
, child_tidptr=0x5555589fe650) = 20695
[pid 20695] set_robust_list(0x5555589fe660, 24) = 0
[pid 20695] chdir("./19853")            = 0
[pid 20695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20695] setpgid(0, 0)               = 0
[pid 20695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20695] write(3, "1000", 4)         = 4
[pid 20695] close(3)                    = 0
[pid 20695] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20695] write(1, "executing program\n", 18executing program
) = 18
[pid 20695] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20695] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20695] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20695] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20695] exit_group(0)               = ?
[pid 20695] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20695, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19853", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19853", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19853/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19853/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19853/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19853")                        = 0
mkdir("./19854", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20696
./strace-static-x86_64: Process 20696 attached
[pid 20696] set_robust_list(0x5555589fe660, 24) = 0
[pid 20696] chdir("./19854")            = 0
[pid 20696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20696] setpgid(0, 0)               = 0
[pid 20696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20696] write(3, "1000", 4)         = 4
[pid 20696] close(3)                    = 0
[pid 20696] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20696] write(1, "executing program\n", 18executing program
) = 18
[pid 20696] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20696] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20696] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20696] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20696] exit_group(0)               = ?
[pid 20696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19854", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19854", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19854/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19854/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19854/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19854")                        = 0
mkdir("./19855", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20697
./strace-static-x86_64: Process 20697 attached
[pid 20697] set_robust_list(0x5555589fe660, 24) = 0
[pid 20697] chdir("./19855")            = 0
[pid 20697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20697] setpgid(0, 0)               = 0
[pid 20697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20697] write(3, "1000", 4)         = 4
[pid 20697] close(3)                    = 0
[pid 20697] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20697] write(1, "executing program\n", 18executing program
) = 18
[pid 20697] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20697] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20697] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20697] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20697] exit_group(0)               = ?
[pid 20697] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20697, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19855", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19855", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19855/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19855/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19855/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19855")                        = 0
mkdir("./19856", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20698
./strace-static-x86_64: Process 20698 attached
[pid 20698] set_robust_list(0x5555589fe660, 24) = 0
[pid 20698] chdir("./19856")            = 0
[pid 20698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20698] setpgid(0, 0)               = 0
[pid 20698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20698] write(3, "1000", 4)         = 4
[pid 20698] close(3)                    = 0
[pid 20698] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20698] write(1, "executing program\n", 18executing program
) = 18
[pid 20698] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20698] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20698] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20698] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20698] exit_group(0)               = ?
[pid 20698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19856", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19856", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19856/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19856/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19856/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19856")                        = 0
mkdir("./19857", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20699
./strace-static-x86_64: Process 20699 attached
[pid 20699] set_robust_list(0x5555589fe660, 24) = 0
[pid 20699] chdir("./19857")            = 0
[pid 20699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20699] setpgid(0, 0)               = 0
[pid 20699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20699] write(3, "1000", 4)         = 4
[pid 20699] close(3)                    = 0
[pid 20699] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20699] write(1, "executing program\n", 18) = 18
[pid 20699] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20699] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20699] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20699] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20699] exit_group(0)               = ?
[pid 20699] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20699, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19857", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19857", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19857/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19857/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19857/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19857")                        = 0
mkdir("./19858", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20700 attached
, child_tidptr=0x5555589fe650) = 20700
[pid 20700] set_robust_list(0x5555589fe660, 24) = 0
[pid 20700] chdir("./19858")            = 0
[pid 20700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20700] setpgid(0, 0)               = 0
[pid 20700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20700] write(3, "1000", 4)         = 4
[pid 20700] close(3)                    = 0
executing program
[pid 20700] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20700] write(1, "executing program\n", 18) = 18
[pid 20700] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20700] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20700] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20700] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20700] exit_group(0)               = ?
[pid 20700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19858", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19858", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19858/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19858/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19858/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19858")                        = 0
mkdir("./19859", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20701
./strace-static-x86_64: Process 20701 attached
[pid 20701] set_robust_list(0x5555589fe660, 24) = 0
[pid 20701] chdir("./19859")            = 0
[pid 20701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20701] setpgid(0, 0)               = 0
[pid 20701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20701] write(3, "1000", 4)         = 4
[pid 20701] close(3)                    = 0
[pid 20701] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20701] write(1, "executing program\n", 18) = 18
[pid 20701] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20701] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20701] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20701] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20701] exit_group(0)               = ?
[pid 20701] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20701, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19859", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19859", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19859/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19859/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19859/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19859")                        = 0
mkdir("./19860", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20702
./strace-static-x86_64: Process 20702 attached
[pid 20702] set_robust_list(0x5555589fe660, 24) = 0
[pid 20702] chdir("./19860")            = 0
[pid 20702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20702] setpgid(0, 0)               = 0
[pid 20702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20702] write(3, "1000", 4)         = 4
[pid 20702] close(3)                    = 0
[pid 20702] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20702] write(1, "executing program\n", 18executing program
) = 18
[pid 20702] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20702] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20702] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20702] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20702] exit_group(0)               = ?
[pid 20702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19860", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19860", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19860/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19860/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19860/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19860")                        = 0
mkdir("./19861", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20703
./strace-static-x86_64: Process 20703 attached
[pid 20703] set_robust_list(0x5555589fe660, 24) = 0
[pid 20703] chdir("./19861")            = 0
[pid 20703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20703] setpgid(0, 0)               = 0
[pid 20703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20703] write(3, "1000", 4)         = 4
[pid 20703] close(3)                    = 0
[pid 20703] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20703] write(1, "executing program\n", 18executing program
) = 18
[pid 20703] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20703] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20703] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20703] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20703] exit_group(0)               = ?
[pid 20703] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20703, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19861", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19861", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19861/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19861/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19861/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19861")                        = 0
mkdir("./19862", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20704
./strace-static-x86_64: Process 20704 attached
[pid 20704] set_robust_list(0x5555589fe660, 24) = 0
[pid 20704] chdir("./19862")            = 0
[pid 20704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20704] setpgid(0, 0)               = 0
[pid 20704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20704] write(3, "1000", 4)         = 4
[pid 20704] close(3)                    = 0
[pid 20704] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20704] write(1, "executing program\n", 18executing program
) = 18
[pid 20704] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20704] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20704] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20704] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20704] exit_group(0)               = ?
[pid 20704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19862", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19862", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19862/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19862/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19862/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19862")                        = 0
mkdir("./19863", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20705 attached
, child_tidptr=0x5555589fe650) = 20705
[pid 20705] set_robust_list(0x5555589fe660, 24) = 0
[pid 20705] chdir("./19863")            = 0
[pid 20705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20705] setpgid(0, 0)               = 0
[pid 20705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20705] write(3, "1000", 4)         = 4
[pid 20705] close(3)                    = 0
[pid 20705] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20705] write(1, "executing program\n", 18executing program
) = 18
[pid 20705] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20705] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20705] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20705] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20705] exit_group(0)               = ?
[pid 20705] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20705, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19863", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19863", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19863/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19863/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19863/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19863")                        = 0
mkdir("./19864", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20706
./strace-static-x86_64: Process 20706 attached
[pid 20706] set_robust_list(0x5555589fe660, 24) = 0
[pid 20706] chdir("./19864")            = 0
[pid 20706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20706] setpgid(0, 0)               = 0
[pid 20706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20706] write(3, "1000", 4)         = 4
[pid 20706] close(3)                    = 0
[pid 20706] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20706] write(1, "executing program\n", 18executing program
) = 18
[pid 20706] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20706] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20706] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20706] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20706] exit_group(0)               = ?
[pid 20706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19864", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19864", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19864/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19864/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19864/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19864")                        = 0
mkdir("./19865", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20707 attached
, child_tidptr=0x5555589fe650) = 20707
[pid 20707] set_robust_list(0x5555589fe660, 24) = 0
[pid 20707] chdir("./19865")            = 0
[pid 20707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20707] setpgid(0, 0)               = 0
[pid 20707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20707] write(3, "1000", 4)         = 4
[pid 20707] close(3)                    = 0
[pid 20707] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20707] write(1, "executing program\n", 18executing program
) = 18
[pid 20707] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20707] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20707] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20707] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20707] exit_group(0)               = ?
[pid 20707] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20707, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19865", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19865", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19865/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19865/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19865/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19865")                        = 0
mkdir("./19866", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20708 attached
, child_tidptr=0x5555589fe650) = 20708
[pid 20708] set_robust_list(0x5555589fe660, 24) = 0
[pid 20708] chdir("./19866")            = 0
[pid 20708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20708] setpgid(0, 0)               = 0
[pid 20708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20708] write(3, "1000", 4)         = 4
[pid 20708] close(3)                    = 0
[pid 20708] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20708] write(1, "executing program\n", 18) = 18
[pid 20708] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20708] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20708] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20708] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20708] exit_group(0)               = ?
[pid 20708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19866", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19866", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19866/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19866/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19866/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19866")                        = 0
mkdir("./19867", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20709
./strace-static-x86_64: Process 20709 attached
[pid 20709] set_robust_list(0x5555589fe660, 24) = 0
[pid 20709] chdir("./19867")            = 0
[pid 20709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20709] setpgid(0, 0)               = 0
[pid 20709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20709] write(3, "1000", 4)         = 4
[pid 20709] close(3)                    = 0
executing program
[pid 20709] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20709] write(1, "executing program\n", 18) = 18
[pid 20709] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20709] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20709] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20709] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20709] exit_group(0)               = ?
[pid 20709] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20709, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19867", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19867", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19867/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19867/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19867/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19867")                        = 0
mkdir("./19868", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20710
./strace-static-x86_64: Process 20710 attached
[pid 20710] set_robust_list(0x5555589fe660, 24) = 0
[pid 20710] chdir("./19868")            = 0
[pid 20710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20710] setpgid(0, 0)               = 0
[pid 20710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20710] write(3, "1000", 4)         = 4
[pid 20710] close(3)                    = 0
[pid 20710] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20710] write(1, "executing program\n", 18) = 18
[pid 20710] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20710] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20710] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20710] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20710] exit_group(0)               = ?
[pid 20710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19868", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19868", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19868/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19868/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19868/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19868")                        = 0
mkdir("./19869", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20711
./strace-static-x86_64: Process 20711 attached
[pid 20711] set_robust_list(0x5555589fe660, 24) = 0
[pid 20711] chdir("./19869")            = 0
[pid 20711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20711] setpgid(0, 0)               = 0
[pid 20711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20711] write(3, "1000", 4)         = 4
[pid 20711] close(3)                    = 0
[pid 20711] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20711] write(1, "executing program\n", 18executing program
) = 18
[pid 20711] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20711] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20711] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20711] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20711] exit_group(0)               = ?
[pid 20711] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20711, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19869", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19869", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19869/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19869/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19869/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19869")                        = 0
mkdir("./19870", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20712
./strace-static-x86_64: Process 20712 attached
[pid 20712] set_robust_list(0x5555589fe660, 24) = 0
[pid 20712] chdir("./19870")            = 0
[pid 20712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20712] setpgid(0, 0)               = 0
[pid 20712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20712] write(3, "1000", 4)         = 4
[pid 20712] close(3)                    = 0
[pid 20712] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20712] write(1, "executing program\n", 18executing program
) = 18
[pid 20712] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20712] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20712] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20712] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20712] exit_group(0)               = ?
[pid 20712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19870", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19870", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19870/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19870/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19870/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19870")                        = 0
mkdir("./19871", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20713
./strace-static-x86_64: Process 20713 attached
[pid 20713] set_robust_list(0x5555589fe660, 24) = 0
[pid 20713] chdir("./19871")            = 0
[pid 20713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20713] setpgid(0, 0)               = 0
[pid 20713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20713] write(3, "1000", 4)         = 4
[pid 20713] close(3)                    = 0
[pid 20713] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20713] write(1, "executing program\n", 18executing program
) = 18
[pid 20713] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20713] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20713] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20713] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20713] exit_group(0)               = ?
[pid 20713] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20713, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19871", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19871", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19871/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19871/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19871/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19871")                        = 0
mkdir("./19872", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20714 attached
, child_tidptr=0x5555589fe650) = 20714
[pid 20714] set_robust_list(0x5555589fe660, 24) = 0
[pid 20714] chdir("./19872")            = 0
[pid 20714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20714] setpgid(0, 0)               = 0
[pid 20714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20714] write(3, "1000", 4)         = 4
[pid 20714] close(3)                    = 0
[pid 20714] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20714] write(1, "executing program\n", 18executing program
) = 18
[pid 20714] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20714] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20714] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20714] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20714] exit_group(0)               = ?
[pid 20714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19872", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19872", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19872/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19872/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19872/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19872")                        = 0
mkdir("./19873", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20715 attached
, child_tidptr=0x5555589fe650) = 20715
[pid 20715] set_robust_list(0x5555589fe660, 24) = 0
[pid 20715] chdir("./19873")            = 0
[pid 20715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20715] setpgid(0, 0)               = 0
[pid 20715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20715] write(3, "1000", 4)         = 4
[pid 20715] close(3)                    = 0
[pid 20715] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20715] write(1, "executing program\n", 18) = 18
[pid 20715] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20715] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20715] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20715] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20715] exit_group(0)               = ?
[pid 20715] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20715, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19873", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19873", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19873/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19873/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19873/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19873")                        = 0
mkdir("./19874", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20716
./strace-static-x86_64: Process 20716 attached
[pid 20716] set_robust_list(0x5555589fe660, 24) = 0
[pid 20716] chdir("./19874")            = 0
[pid 20716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20716] setpgid(0, 0)               = 0
[pid 20716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20716] write(3, "1000", 4)         = 4
[pid 20716] close(3)                    = 0
[pid 20716] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20716] write(1, "executing program\n", 18executing program
) = 18
[pid 20716] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20716] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20716] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20716] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20716] exit_group(0)               = ?
[pid 20716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19874", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19874", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19874/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19874/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19874/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19874")                        = 0
mkdir("./19875", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20717
./strace-static-x86_64: Process 20717 attached
[pid 20717] set_robust_list(0x5555589fe660, 24) = 0
[pid 20717] chdir("./19875")            = 0
[pid 20717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20717] setpgid(0, 0)               = 0
[pid 20717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20717] write(3, "1000", 4)         = 4
[pid 20717] close(3)                    = 0
[pid 20717] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20717] write(1, "executing program\n", 18) = 18
[pid 20717] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20717] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20717] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20717] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20717] exit_group(0)               = ?
[pid 20717] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20717, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19875", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19875", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19875/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19875/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19875/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19875")                        = 0
mkdir("./19876", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20718
./strace-static-x86_64: Process 20718 attached
[pid 20718] set_robust_list(0x5555589fe660, 24) = 0
[pid 20718] chdir("./19876")            = 0
[pid 20718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20718] setpgid(0, 0)               = 0
[pid 20718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20718] write(3, "1000", 4)         = 4
[pid 20718] close(3)                    = 0
[pid 20718] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20718] write(1, "executing program\n", 18executing program
) = 18
[pid 20718] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20718] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20718] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20718] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20718] exit_group(0)               = ?
[pid 20718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19876", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19876", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19876/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19876/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19876/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19876")                        = 0
mkdir("./19877", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20719
./strace-static-x86_64: Process 20719 attached
[pid 20719] set_robust_list(0x5555589fe660, 24) = 0
[pid 20719] chdir("./19877")            = 0
[pid 20719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20719] setpgid(0, 0)               = 0
[pid 20719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20719] write(3, "1000", 4)         = 4
[pid 20719] close(3)                    = 0
[pid 20719] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20719] write(1, "executing program\n", 18executing program
) = 18
[pid 20719] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20719] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20719] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20719] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20719] exit_group(0)               = ?
[pid 20719] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20719, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19877", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19877", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19877/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19877/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19877/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19877")                        = 0
mkdir("./19878", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20720
./strace-static-x86_64: Process 20720 attached
[pid 20720] set_robust_list(0x5555589fe660, 24) = 0
[pid 20720] chdir("./19878")            = 0
[pid 20720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20720] setpgid(0, 0)               = 0
[pid 20720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20720] write(3, "1000", 4)         = 4
[pid 20720] close(3)                    = 0
[pid 20720] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20720] write(1, "executing program\n", 18) = 18
[pid 20720] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20720] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20720] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20720] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20720] exit_group(0)               = ?
[pid 20720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19878", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19878", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19878/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19878/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19878/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19878")                        = 0
mkdir("./19879", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20721
./strace-static-x86_64: Process 20721 attached
[pid 20721] set_robust_list(0x5555589fe660, 24) = 0
[pid 20721] chdir("./19879")            = 0
[pid 20721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20721] setpgid(0, 0)               = 0
[pid 20721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20721] write(3, "1000", 4)         = 4
[pid 20721] close(3)                    = 0
[pid 20721] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20721] write(1, "executing program\n", 18executing program
) = 18
[pid 20721] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20721] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20721] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20721] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20721] exit_group(0)               = ?
[pid 20721] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20721, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19879", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19879", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19879/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19879/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19879/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19879")                        = 0
mkdir("./19880", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20722
./strace-static-x86_64: Process 20722 attached
[pid 20722] set_robust_list(0x5555589fe660, 24) = 0
[pid 20722] chdir("./19880")            = 0
[pid 20722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20722] setpgid(0, 0)               = 0
[pid 20722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20722] write(3, "1000", 4)         = 4
[pid 20722] close(3)                    = 0
[pid 20722] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20722] write(1, "executing program\n", 18executing program
) = 18
[pid 20722] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20722] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20722] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20722] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20722] exit_group(0)               = ?
[pid 20722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19880", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19880", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19880/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19880/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19880/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19880")                        = 0
mkdir("./19881", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20723
./strace-static-x86_64: Process 20723 attached
[pid 20723] set_robust_list(0x5555589fe660, 24) = 0
[pid 20723] chdir("./19881")            = 0
[pid 20723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20723] setpgid(0, 0)               = 0
[pid 20723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20723] write(3, "1000", 4)         = 4
[pid 20723] close(3)                    = 0
[pid 20723] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20723] write(1, "executing program\n", 18executing program
) = 18
[pid 20723] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20723] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20723] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20723] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20723] exit_group(0)               = ?
[pid 20723] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20723, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19881", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19881", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19881/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19881/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19881/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19881")                        = 0
mkdir("./19882", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20724
./strace-static-x86_64: Process 20724 attached
[pid 20724] set_robust_list(0x5555589fe660, 24) = 0
[pid 20724] chdir("./19882")            = 0
[pid 20724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20724] setpgid(0, 0)               = 0
[pid 20724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20724] write(3, "1000", 4)         = 4
[pid 20724] close(3)                    = 0
[pid 20724] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20724] write(1, "executing program\n", 18executing program
) = 18
[pid 20724] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20724] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20724] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20724] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20724] exit_group(0)               = ?
[pid 20724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19882", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19882", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19882/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19882/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19882/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19882")                        = 0
mkdir("./19883", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20725
./strace-static-x86_64: Process 20725 attached
[pid 20725] set_robust_list(0x5555589fe660, 24) = 0
[pid 20725] chdir("./19883")            = 0
[pid 20725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20725] setpgid(0, 0)               = 0
[pid 20725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20725] write(3, "1000", 4)         = 4
[pid 20725] close(3)                    = 0
[pid 20725] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20725] write(1, "executing program\n", 18executing program
) = 18
[pid 20725] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20725] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20725] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20725] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20725] exit_group(0)               = ?
[pid 20725] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20725, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19883", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19883", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19883/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19883/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19883/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19883")                        = 0
mkdir("./19884", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20726 attached
, child_tidptr=0x5555589fe650) = 20726
[pid 20726] set_robust_list(0x5555589fe660, 24) = 0
[pid 20726] chdir("./19884")            = 0
[pid 20726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20726] setpgid(0, 0)               = 0
[pid 20726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20726] write(3, "1000", 4)         = 4
[pid 20726] close(3)                    = 0
[pid 20726] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20726] write(1, "executing program\n", 18executing program
) = 18
[pid 20726] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20726] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20726] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20726] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20726] exit_group(0)               = ?
[pid 20726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19884", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19884", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19884/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19884/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19884/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19884")                        = 0
mkdir("./19885", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20727
./strace-static-x86_64: Process 20727 attached
[pid 20727] set_robust_list(0x5555589fe660, 24) = 0
[pid 20727] chdir("./19885")            = 0
[pid 20727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20727] setpgid(0, 0)               = 0
[pid 20727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20727] write(3, "1000", 4)         = 4
[pid 20727] close(3)                    = 0
[pid 20727] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20727] write(1, "executing program\n", 18executing program
) = 18
[pid 20727] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20727] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20727] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20727] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20727] exit_group(0)               = ?
[pid 20727] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20727, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19885", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19885", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19885/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19885/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19885/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19885")                        = 0
mkdir("./19886", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20728 attached
, child_tidptr=0x5555589fe650) = 20728
[pid 20728] set_robust_list(0x5555589fe660, 24) = 0
[pid 20728] chdir("./19886")            = 0
[pid 20728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20728] setpgid(0, 0)               = 0
[pid 20728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20728] write(3, "1000", 4)         = 4
[pid 20728] close(3)                    = 0
[pid 20728] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20728] write(1, "executing program\n", 18) = 18
[pid 20728] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20728] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20728] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20728] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20728] exit_group(0)               = ?
[pid 20728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20728, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19886", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19886", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19886/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19886/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19886/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19886")                        = 0
mkdir("./19887", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20729 attached
, child_tidptr=0x5555589fe650) = 20729
[pid 20729] set_robust_list(0x5555589fe660, 24) = 0
[pid 20729] chdir("./19887")            = 0
[pid 20729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20729] setpgid(0, 0)               = 0
[pid 20729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20729] write(3, "1000", 4)         = 4
[pid 20729] close(3)                    = 0
[pid 20729] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20729] write(1, "executing program\n", 18) = 18
[pid 20729] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20729] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20729] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20729] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20729] exit_group(0)               = ?
[pid 20729] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20729, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19887", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19887", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19887/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19887/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19887/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19887")                        = 0
mkdir("./19888", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20730
./strace-static-x86_64: Process 20730 attached
[pid 20730] set_robust_list(0x5555589fe660, 24) = 0
[pid 20730] chdir("./19888")            = 0
[pid 20730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20730] setpgid(0, 0)               = 0
[pid 20730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20730] write(3, "1000", 4)         = 4
[pid 20730] close(3)                    = 0
[pid 20730] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20730] write(1, "executing program\n", 18) = 18
[pid 20730] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20730] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20730] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20730] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20730] exit_group(0)               = ?
[pid 20730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19888", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19888", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19888/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19888/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19888/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19888")                        = 0
mkdir("./19889", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20731
./strace-static-x86_64: Process 20731 attached
[pid 20731] set_robust_list(0x5555589fe660, 24) = 0
[pid 20731] chdir("./19889")            = 0
[pid 20731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20731] setpgid(0, 0)               = 0
[pid 20731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20731] write(3, "1000", 4)         = 4
[pid 20731] close(3)                    = 0
[pid 20731] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20731] write(1, "executing program\n", 18executing program
) = 18
[pid 20731] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20731] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20731] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20731] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20731] exit_group(0)               = ?
[pid 20731] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20731, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19889", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19889", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19889/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19889/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19889/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19889")                        = 0
mkdir("./19890", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20732
./strace-static-x86_64: Process 20732 attached
[pid 20732] set_robust_list(0x5555589fe660, 24) = 0
[pid 20732] chdir("./19890")            = 0
[pid 20732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20732] setpgid(0, 0)               = 0
[pid 20732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20732] write(3, "1000", 4)         = 4
[pid 20732] close(3)                    = 0
[pid 20732] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20732] write(1, "executing program\n", 18executing program
) = 18
[pid 20732] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20732] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20732] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20732] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20732] exit_group(0)               = ?
[pid 20732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19890", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19890", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19890/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19890/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19890/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19890")                        = 0
mkdir("./19891", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20733
./strace-static-x86_64: Process 20733 attached
[pid 20733] set_robust_list(0x5555589fe660, 24) = 0
[pid 20733] chdir("./19891")            = 0
[pid 20733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20733] setpgid(0, 0)               = 0
[pid 20733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20733] write(3, "1000", 4)         = 4
[pid 20733] close(3)                    = 0
[pid 20733] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20733] write(1, "executing program\n", 18) = 18
[pid 20733] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20733] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20733] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20733] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20733] exit_group(0)               = ?
[pid 20733] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20733, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19891", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19891", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19891/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19891/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19891/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19891")                        = 0
mkdir("./19892", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20734
./strace-static-x86_64: Process 20734 attached
[pid 20734] set_robust_list(0x5555589fe660, 24) = 0
[pid 20734] chdir("./19892")            = 0
[pid 20734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20734] setpgid(0, 0)               = 0
[pid 20734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20734] write(3, "1000", 4)         = 4
[pid 20734] close(3)                    = 0
[pid 20734] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20734] write(1, "executing program\n", 18executing program
) = 18
[pid 20734] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20734] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20734] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20734] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20734] exit_group(0)               = ?
[pid 20734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19892", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19892", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19892/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19892/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19892/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19892")                        = 0
mkdir("./19893", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20735
./strace-static-x86_64: Process 20735 attached
[pid 20735] set_robust_list(0x5555589fe660, 24) = 0
[pid 20735] chdir("./19893")            = 0
[pid 20735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20735] setpgid(0, 0)               = 0
[pid 20735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20735] write(3, "1000", 4)         = 4
[pid 20735] close(3)                    = 0
[pid 20735] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20735] write(1, "executing program\n", 18executing program
) = 18
[pid 20735] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20735] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20735] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20735] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20735] exit_group(0)               = ?
[pid 20735] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20735, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19893", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19893", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19893/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19893/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19893/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19893")                        = 0
mkdir("./19894", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20736 attached
, child_tidptr=0x5555589fe650) = 20736
[pid 20736] set_robust_list(0x5555589fe660, 24) = 0
[pid 20736] chdir("./19894")            = 0
[pid 20736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20736] setpgid(0, 0)               = 0
[pid 20736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20736] write(3, "1000", 4)         = 4
[pid 20736] close(3)                    = 0
[pid 20736] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20736] write(1, "executing program\n", 18executing program
) = 18
[pid 20736] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20736] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20736] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20736] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20736] exit_group(0)               = ?
[pid 20736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19894", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19894", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19894/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19894/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19894/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19894")                        = 0
mkdir("./19895", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20737 attached
 <unfinished ...>
[pid 20737] set_robust_list(0x5555589fe660, 24 <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20737
[pid 20737] <... set_robust_list resumed>) = 0
[pid 20737] chdir("./19895")            = 0
[pid 20737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20737] setpgid(0, 0)               = 0
[pid 20737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20737] write(3, "1000", 4)         = 4
[pid 20737] close(3)                    = 0
[pid 20737] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20737] write(1, "executing program\n", 18executing program
) = 18
[pid 20737] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20737] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20737] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20737] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20737] exit_group(0)               = ?
[pid 20737] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20737, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19895", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19895", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19895/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19895/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19895/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19895")                        = 0
mkdir("./19896", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20738
./strace-static-x86_64: Process 20738 attached
[pid 20738] set_robust_list(0x5555589fe660, 24) = 0
[pid 20738] chdir("./19896")            = 0
[pid 20738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20738] setpgid(0, 0)               = 0
[pid 20738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20738] write(3, "1000", 4)         = 4
[pid 20738] close(3)                    = 0
[pid 20738] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20738] write(1, "executing program\n", 18executing program
) = 18
[pid 20738] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20738] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20738] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20738] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20738] exit_group(0)               = ?
[pid 20738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19896", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19896", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19896/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19896/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19896/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19896")                        = 0
mkdir("./19897", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20739 attached
, child_tidptr=0x5555589fe650) = 20739
[pid 20739] set_robust_list(0x5555589fe660, 24) = 0
[pid 20739] chdir("./19897")            = 0
[pid 20739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20739] setpgid(0, 0)               = 0
[pid 20739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20739] write(3, "1000", 4)         = 4
[pid 20739] close(3)                    = 0
[pid 20739] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20739] write(1, "executing program\n", 18executing program
) = 18
[pid 20739] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20739] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20739] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20739] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20739] exit_group(0)               = ?
[pid 20739] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20739, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19897", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19897", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19897/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19897/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19897/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19897")                        = 0
mkdir("./19898", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20740 attached
, child_tidptr=0x5555589fe650) = 20740
[pid 20740] set_robust_list(0x5555589fe660, 24) = 0
[pid 20740] chdir("./19898")            = 0
[pid 20740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20740] setpgid(0, 0)               = 0
[pid 20740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20740] write(3, "1000", 4)         = 4
[pid 20740] close(3)                    = 0
[pid 20740] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20740] write(1, "executing program\n", 18executing program
) = 18
[pid 20740] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20740] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20740] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20740] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20740] exit_group(0)               = ?
[pid 20740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19898", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19898", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19898/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19898/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19898/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19898")                        = 0
mkdir("./19899", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20741 attached
, child_tidptr=0x5555589fe650) = 20741
[pid 20741] set_robust_list(0x5555589fe660, 24) = 0
[pid 20741] chdir("./19899")            = 0
[pid 20741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20741] setpgid(0, 0)               = 0
[pid 20741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20741] write(3, "1000", 4)         = 4
[pid 20741] close(3)                    = 0
[pid 20741] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20741] write(1, "executing program\n", 18executing program
) = 18
[pid 20741] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20741] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20741] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20741] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20741] exit_group(0)               = ?
[pid 20741] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20741, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19899", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19899", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19899/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19899/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19899/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19899")                        = 0
mkdir("./19900", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20742
./strace-static-x86_64: Process 20742 attached
[pid 20742] set_robust_list(0x5555589fe660, 24) = 0
[pid 20742] chdir("./19900")            = 0
[pid 20742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20742] setpgid(0, 0)               = 0
[pid 20742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20742] write(3, "1000", 4)         = 4
[pid 20742] close(3)                    = 0
[pid 20742] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20742] write(1, "executing program\n", 18executing program
) = 18
[pid 20742] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20742] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20742] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20742] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20742] exit_group(0)               = ?
[pid 20742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19900", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19900", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19900/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19900/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19900/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19900")                        = 0
mkdir("./19901", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20743 attached
, child_tidptr=0x5555589fe650) = 20743
[pid 20743] set_robust_list(0x5555589fe660, 24) = 0
[pid 20743] chdir("./19901")            = 0
[pid 20743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20743] setpgid(0, 0)               = 0
[pid 20743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20743] write(3, "1000", 4)         = 4
[pid 20743] close(3)                    = 0
[pid 20743] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20743] write(1, "executing program\n", 18executing program
) = 18
[pid 20743] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20743] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20743] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20743] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20743] exit_group(0)               = ?
[pid 20743] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20743, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19901", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19901", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19901/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19901/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19901/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19901")                        = 0
mkdir("./19902", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20744 attached
, child_tidptr=0x5555589fe650) = 20744
[pid 20744] set_robust_list(0x5555589fe660, 24) = 0
[pid 20744] chdir("./19902")            = 0
[pid 20744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20744] setpgid(0, 0)               = 0
[pid 20744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20744] write(3, "1000", 4)         = 4
[pid 20744] close(3)                    = 0
[pid 20744] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20744] write(1, "executing program\n", 18executing program
) = 18
[pid 20744] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20744] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20744] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20744] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20744] exit_group(0)               = ?
[pid 20744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19902", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19902", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19902/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19902/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19902/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19902")                        = 0
mkdir("./19903", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20745
./strace-static-x86_64: Process 20745 attached
[pid 20745] set_robust_list(0x5555589fe660, 24) = 0
[pid 20745] chdir("./19903")            = 0
[pid 20745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20745] setpgid(0, 0)               = 0
[pid 20745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20745] write(3, "1000", 4)         = 4
[pid 20745] close(3)                    = 0
[pid 20745] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20745] write(1, "executing program\n", 18executing program
) = 18
[pid 20745] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20745] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20745] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20745] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20745] exit_group(0)               = ?
[pid 20745] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20745, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19903", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19903", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19903/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19903/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19903/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19903")                        = 0
mkdir("./19904", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20746
./strace-static-x86_64: Process 20746 attached
[pid 20746] set_robust_list(0x5555589fe660, 24) = 0
[pid 20746] chdir("./19904")            = 0
[pid 20746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20746] setpgid(0, 0)               = 0
[pid 20746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20746] write(3, "1000", 4)         = 4
[pid 20746] close(3)                    = 0
[pid 20746] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20746] write(1, "executing program\n", 18executing program
) = 18
[pid 20746] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20746] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20746] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20746] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20746] exit_group(0)               = ?
[pid 20746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19904", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19904", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19904/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19904/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19904/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19904")                        = 0
mkdir("./19905", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20747
./strace-static-x86_64: Process 20747 attached
[pid 20747] set_robust_list(0x5555589fe660, 24) = 0
[pid 20747] chdir("./19905")            = 0
[pid 20747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20747] setpgid(0, 0)               = 0
[pid 20747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20747] write(3, "1000", 4)         = 4
[pid 20747] close(3)                    = 0
[pid 20747] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20747] write(1, "executing program\n", 18executing program
) = 18
[pid 20747] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20747] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20747] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20747] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20747] exit_group(0)               = ?
[pid 20747] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20747, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19905", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19905", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19905/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19905/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19905/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19905")                        = 0
mkdir("./19906", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20748 attached
, child_tidptr=0x5555589fe650) = 20748
[pid 20748] set_robust_list(0x5555589fe660, 24) = 0
[pid 20748] chdir("./19906")            = 0
[pid 20748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20748] setpgid(0, 0)               = 0
[pid 20748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20748] write(3, "1000", 4)         = 4
[pid 20748] close(3)                    = 0
[pid 20748] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20748] write(1, "executing program\n", 18executing program
) = 18
[pid 20748] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20748] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20748] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20748] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20748] exit_group(0)               = ?
[pid 20748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19906", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19906", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19906/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19906/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19906/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19906")                        = 0
mkdir("./19907", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20749
./strace-static-x86_64: Process 20749 attached
[pid 20749] set_robust_list(0x5555589fe660, 24) = 0
[pid 20749] chdir("./19907")            = 0
[pid 20749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20749] setpgid(0, 0)               = 0
[pid 20749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20749] write(3, "1000", 4)         = 4
[pid 20749] close(3)                    = 0
[pid 20749] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20749] write(1, "executing program\n", 18executing program
) = 18
[pid 20749] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20749] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20749] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20749] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20749] exit_group(0)               = ?
[pid 20749] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20749, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19907", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19907", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19907/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19907/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19907/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19907")                        = 0
mkdir("./19908", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20750
./strace-static-x86_64: Process 20750 attached
[pid 20750] set_robust_list(0x5555589fe660, 24) = 0
[pid 20750] chdir("./19908")            = 0
[pid 20750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20750] setpgid(0, 0)               = 0
[pid 20750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20750] write(3, "1000", 4)         = 4
[pid 20750] close(3)                    = 0
[pid 20750] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20750] write(1, "executing program\n", 18executing program
) = 18
[pid 20750] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20750] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20750] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20750] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20750] exit_group(0)               = ?
[pid 20750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19908", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19908", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19908/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19908/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19908/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19908")                        = 0
mkdir("./19909", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20751
./strace-static-x86_64: Process 20751 attached
[pid 20751] set_robust_list(0x5555589fe660, 24) = 0
[pid 20751] chdir("./19909")            = 0
[pid 20751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20751] setpgid(0, 0)               = 0
[pid 20751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20751] write(3, "1000", 4)         = 4
[pid 20751] close(3)                    = 0
[pid 20751] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20751] write(1, "executing program\n", 18executing program
) = 18
[pid 20751] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20751] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20751] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20751] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20751] exit_group(0)               = ?
[pid 20751] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20751, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19909", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19909", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19909/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19909/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19909/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19909")                        = 0
mkdir("./19910", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20752 attached
, child_tidptr=0x5555589fe650) = 20752
[pid 20752] set_robust_list(0x5555589fe660, 24) = 0
[pid 20752] chdir("./19910")            = 0
[pid 20752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20752] setpgid(0, 0)               = 0
[pid 20752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20752] write(3, "1000", 4)         = 4
[pid 20752] close(3)                    = 0
[pid 20752] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20752] write(1, "executing program\n", 18) = 18
[pid 20752] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20752] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20752] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20752] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20752] exit_group(0)               = ?
[pid 20752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19910", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19910", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19910/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19910/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19910/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19910")                        = 0
mkdir("./19911", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20753
./strace-static-x86_64: Process 20753 attached
[pid 20753] set_robust_list(0x5555589fe660, 24) = 0
[pid 20753] chdir("./19911")            = 0
[pid 20753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20753] setpgid(0, 0)               = 0
[pid 20753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20753] write(3, "1000", 4)         = 4
[pid 20753] close(3)                    = 0
[pid 20753] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20753] write(1, "executing program\n", 18) = 18
[pid 20753] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20753] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20753] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20753] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20753] exit_group(0)               = ?
[pid 20753] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20753, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19911", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19911", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19911/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19911/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19911/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19911")                        = 0
mkdir("./19912", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20754
./strace-static-x86_64: Process 20754 attached
[pid 20754] set_robust_list(0x5555589fe660, 24) = 0
[pid 20754] chdir("./19912")            = 0
[pid 20754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20754] setpgid(0, 0)               = 0
[pid 20754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20754] write(3, "1000", 4)         = 4
[pid 20754] close(3)                    = 0
[pid 20754] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20754] write(1, "executing program\n", 18) = 18
[pid 20754] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20754] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20754] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20754] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20754] exit_group(0)               = ?
[pid 20754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19912", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19912", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19912/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19912/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19912/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19912")                        = 0
mkdir("./19913", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20755
./strace-static-x86_64: Process 20755 attached
[pid 20755] set_robust_list(0x5555589fe660, 24) = 0
[pid 20755] chdir("./19913")            = 0
[pid 20755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20755] setpgid(0, 0)               = 0
[pid 20755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20755] write(3, "1000", 4)         = 4
[pid 20755] close(3)                    = 0
[pid 20755] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20755] write(1, "executing program\n", 18executing program
) = 18
[pid 20755] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20755] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20755] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20755] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20755] exit_group(0)               = ?
[pid 20755] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20755, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19913", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19913", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19913/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19913/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19913/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19913")                        = 0
mkdir("./19914", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20756
./strace-static-x86_64: Process 20756 attached
[pid 20756] set_robust_list(0x5555589fe660, 24) = 0
[pid 20756] chdir("./19914")            = 0
[pid 20756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20756] setpgid(0, 0)               = 0
[pid 20756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20756] write(3, "1000", 4)         = 4
[pid 20756] close(3)                    = 0
[pid 20756] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20756] write(1, "executing program\n", 18) = 18
[pid 20756] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20756] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20756] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20756] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20756] exit_group(0)               = ?
[pid 20756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19914", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19914", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19914/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19914/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19914/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19914")                        = 0
mkdir("./19915", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20757 attached
, child_tidptr=0x5555589fe650) = 20757
[pid 20757] set_robust_list(0x5555589fe660, 24) = 0
[pid 20757] chdir("./19915")            = 0
[pid 20757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20757] setpgid(0, 0)               = 0
[pid 20757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20757] write(3, "1000", 4)         = 4
[pid 20757] close(3)                    = 0
[pid 20757] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20757] write(1, "executing program\n", 18executing program
) = 18
[pid 20757] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20757] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20757] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20757] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20757] exit_group(0)               = ?
[pid 20757] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20757, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19915", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19915", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19915/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19915/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19915/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19915")                        = 0
mkdir("./19916", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20758
./strace-static-x86_64: Process 20758 attached
[pid 20758] set_robust_list(0x5555589fe660, 24) = 0
[pid 20758] chdir("./19916")            = 0
[pid 20758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20758] setpgid(0, 0)               = 0
[pid 20758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20758] write(3, "1000", 4)         = 4
[pid 20758] close(3)                    = 0
[pid 20758] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20758] write(1, "executing program\n", 18executing program
) = 18
[pid 20758] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20758] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20758] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20758] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20758] exit_group(0)               = ?
[pid 20758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19916", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19916", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19916/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19916/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19916/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19916")                        = 0
mkdir("./19917", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20759
./strace-static-x86_64: Process 20759 attached
[pid 20759] set_robust_list(0x5555589fe660, 24) = 0
[pid 20759] chdir("./19917")            = 0
[pid 20759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20759] setpgid(0, 0)               = 0
[pid 20759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20759] write(3, "1000", 4)         = 4
[pid 20759] close(3)                    = 0
[pid 20759] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20759] write(1, "executing program\n", 18executing program
) = 18
[pid 20759] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20759] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20759] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20759] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20759] exit_group(0)               = ?
[pid 20759] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20759, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19917", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19917", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19917/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19917/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19917/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19917")                        = 0
mkdir("./19918", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20760 attached
, child_tidptr=0x5555589fe650) = 20760
[pid 20760] set_robust_list(0x5555589fe660, 24) = 0
[pid 20760] chdir("./19918")            = 0
[pid 20760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20760] setpgid(0, 0)               = 0
[pid 20760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20760] write(3, "1000", 4)         = 4
[pid 20760] close(3)                    = 0
[pid 20760] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20760] write(1, "executing program\n", 18executing program
) = 18
[pid 20760] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20760] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20760] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20760] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20760] exit_group(0)               = ?
[pid 20760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19918", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19918", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19918/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19918/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19918/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19918")                        = 0
mkdir("./19919", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20761 attached
, child_tidptr=0x5555589fe650) = 20761
[pid 20761] set_robust_list(0x5555589fe660, 24) = 0
[pid 20761] chdir("./19919")            = 0
[pid 20761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20761] setpgid(0, 0)               = 0
[pid 20761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20761] write(3, "1000", 4)         = 4
[pid 20761] close(3)                    = 0
[pid 20761] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20761] write(1, "executing program\n", 18executing program
) = 18
[pid 20761] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20761] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20761] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20761] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20761] exit_group(0)               = ?
[pid 20761] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20761, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19919", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19919", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19919/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19919/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19919/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19919")                        = 0
mkdir("./19920", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20762 attached
, child_tidptr=0x5555589fe650) = 20762
[pid 20762] set_robust_list(0x5555589fe660, 24) = 0
[pid 20762] chdir("./19920")            = 0
[pid 20762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20762] setpgid(0, 0)               = 0
[pid 20762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20762] write(3, "1000", 4)         = 4
[pid 20762] close(3)                    = 0
[pid 20762] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20762] write(1, "executing program\n", 18executing program
) = 18
[pid 20762] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20762] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20762] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20762] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20762] exit_group(0)               = ?
[pid 20762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19920", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19920", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19920/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19920/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19920/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19920")                        = 0
mkdir("./19921", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20763 attached
, child_tidptr=0x5555589fe650) = 20763
[pid 20763] set_robust_list(0x5555589fe660, 24) = 0
[pid 20763] chdir("./19921")            = 0
[pid 20763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20763] setpgid(0, 0)               = 0
[pid 20763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20763] write(3, "1000", 4)         = 4
[pid 20763] close(3)                    = 0
[pid 20763] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20763] write(1, "executing program\n", 18executing program
) = 18
[pid 20763] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20763] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20763] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20763] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20763] exit_group(0)               = ?
[pid 20763] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20763, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19921", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19921", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19921/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19921/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19921/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19921")                        = 0
mkdir("./19922", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20765
./strace-static-x86_64: Process 20765 attached
[pid 20765] set_robust_list(0x5555589fe660, 24) = 0
[pid 20765] chdir("./19922")            = 0
[pid 20765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20765] setpgid(0, 0)               = 0
[pid 20765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20765] write(3, "1000", 4)         = 4
[pid 20765] close(3)                    = 0
[pid 20765] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20765] write(1, "executing program\n", 18executing program
) = 18
[pid 20765] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20765] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20765] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20765] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20765] exit_group(0)               = ?
[pid 20765] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20765, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19922", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19922", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19922/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19922/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19922/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19922")                        = 0
mkdir("./19923", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20766 attached
, child_tidptr=0x5555589fe650) = 20766
[pid 20766] set_robust_list(0x5555589fe660, 24) = 0
[pid 20766] chdir("./19923")            = 0
[pid 20766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20766] setpgid(0, 0)               = 0
[pid 20766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20766] write(3, "1000", 4)         = 4
[pid 20766] close(3)                    = 0
[pid 20766] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20766] write(1, "executing program\n", 18executing program
) = 18
[pid 20766] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20766] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20766] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20766] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20766] exit_group(0)               = ?
[pid 20766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19923", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19923", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19923/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19923/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19923/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19923")                        = 0
mkdir("./19924", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20767
./strace-static-x86_64: Process 20767 attached
[pid 20767] set_robust_list(0x5555589fe660, 24) = 0
[pid 20767] chdir("./19924")            = 0
[pid 20767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20767] setpgid(0, 0)               = 0
[pid 20767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20767] write(3, "1000", 4)         = 4
[pid 20767] close(3)                    = 0
[pid 20767] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20767] write(1, "executing program\n", 18executing program
) = 18
[pid 20767] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20767] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20767] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20767] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20767] exit_group(0)               = ?
[pid 20767] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20767, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19924", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19924", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19924/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19924/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19924/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19924")                        = 0
mkdir("./19925", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20768
./strace-static-x86_64: Process 20768 attached
[pid 20768] set_robust_list(0x5555589fe660, 24) = 0
[pid 20768] chdir("./19925")            = 0
[pid 20768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20768] setpgid(0, 0)               = 0
[pid 20768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20768] write(3, "1000", 4)         = 4
[pid 20768] close(3)                    = 0
[pid 20768] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20768] write(1, "executing program\n", 18) = 18
[pid 20768] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20768] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20768] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20768] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20768] exit_group(0)               = ?
[pid 20768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19925", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19925", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19925/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19925/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19925/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19925")                        = 0
mkdir("./19926", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20769 attached
, child_tidptr=0x5555589fe650) = 20769
[pid 20769] set_robust_list(0x5555589fe660, 24) = 0
[pid 20769] chdir("./19926")            = 0
[pid 20769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20769] setpgid(0, 0)               = 0
[pid 20769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20769] write(3, "1000", 4)         = 4
[pid 20769] close(3)                    = 0
[pid 20769] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20769] write(1, "executing program\n", 18) = 18
[pid 20769] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20769] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20769] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20769] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20769] exit_group(0)               = ?
[pid 20769] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20769, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19926", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19926", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19926/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19926/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19926/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19926")                        = 0
mkdir("./19927", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20770
./strace-static-x86_64: Process 20770 attached
[pid 20770] set_robust_list(0x5555589fe660, 24) = 0
[pid 20770] chdir("./19927")            = 0
[pid 20770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20770] setpgid(0, 0)               = 0
[pid 20770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20770] write(3, "1000", 4)         = 4
[pid 20770] close(3)                    = 0
[pid 20770] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20770] write(1, "executing program\n", 18executing program
) = 18
[pid 20770] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20770] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20770] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20770] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20770] exit_group(0)               = ?
[pid 20770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19927", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19927", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19927/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19927/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19927/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19927")                        = 0
mkdir("./19928", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20771
./strace-static-x86_64: Process 20771 attached
[pid 20771] set_robust_list(0x5555589fe660, 24) = 0
[pid 20771] chdir("./19928")            = 0
[pid 20771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20771] setpgid(0, 0)               = 0
[pid 20771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20771] write(3, "1000", 4)         = 4
[pid 20771] close(3)                    = 0
[pid 20771] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20771] write(1, "executing program\n", 18executing program
) = 18
[pid 20771] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20771] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20771] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20771] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20771] exit_group(0)               = ?
[pid 20771] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20771, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19928", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19928", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19928/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19928/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19928/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19928")                        = 0
mkdir("./19929", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20772 attached
, child_tidptr=0x5555589fe650) = 20772
[pid 20772] set_robust_list(0x5555589fe660, 24) = 0
[pid 20772] chdir("./19929")            = 0
[pid 20772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20772] setpgid(0, 0)               = 0
[pid 20772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20772] write(3, "1000", 4)         = 4
[pid 20772] close(3)                    = 0
[pid 20772] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20772] write(1, "executing program\n", 18executing program
) = 18
[pid 20772] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20772] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20772] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20772] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20772] exit_group(0)               = ?
[pid 20772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19929", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19929", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19929/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19929/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19929/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19929")                        = 0
mkdir("./19930", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20773
./strace-static-x86_64: Process 20773 attached
[pid 20773] set_robust_list(0x5555589fe660, 24) = 0
[pid 20773] chdir("./19930")            = 0
[pid 20773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20773] setpgid(0, 0)               = 0
[pid 20773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20773] write(3, "1000", 4)         = 4
[pid 20773] close(3)                    = 0
[pid 20773] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20773] write(1, "executing program\n", 18) = 18
[pid 20773] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20773] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20773] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20773] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20773] exit_group(0)               = ?
[pid 20773] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20773, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19930", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19930", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19930/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19930/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19930/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19930")                        = 0
mkdir("./19931", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20774 attached
, child_tidptr=0x5555589fe650) = 20774
[pid 20774] set_robust_list(0x5555589fe660, 24) = 0
[pid 20774] chdir("./19931")            = 0
[pid 20774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20774] setpgid(0, 0)               = 0
[pid 20774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20774] write(3, "1000", 4)         = 4
[pid 20774] close(3)                    = 0
[pid 20774] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20774] write(1, "executing program\n", 18) = 18
[pid 20774] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20774] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20774] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20774] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20774] exit_group(0)               = ?
[pid 20774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19931", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19931", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19931/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19931/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19931/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19931")                        = 0
mkdir("./19932", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20775
./strace-static-x86_64: Process 20775 attached
[pid 20775] set_robust_list(0x5555589fe660, 24) = 0
[pid 20775] chdir("./19932")            = 0
[pid 20775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20775] setpgid(0, 0)               = 0
[pid 20775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20775] write(3, "1000", 4)         = 4
[pid 20775] close(3)                    = 0
[pid 20775] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20775] write(1, "executing program\n", 18) = 18
[pid 20775] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20775] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20775] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20775] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20775] exit_group(0)               = ?
[pid 20775] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20775, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19932", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19932", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19932/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19932/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19932/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19932")                        = 0
mkdir("./19933", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20776
./strace-static-x86_64: Process 20776 attached
[pid 20776] set_robust_list(0x5555589fe660, 24) = 0
[pid 20776] chdir("./19933")            = 0
[pid 20776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20776] setpgid(0, 0)               = 0
[pid 20776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20776] write(3, "1000", 4)         = 4
[pid 20776] close(3)                    = 0
[pid 20776] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20776] write(1, "executing program\n", 18executing program
) = 18
[pid 20776] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20776] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20776] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20776] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20776] exit_group(0)               = ?
[pid 20776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19933", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19933", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19933/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19933/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19933/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19933")                        = 0
mkdir("./19934", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20777
./strace-static-x86_64: Process 20777 attached
[pid 20777] set_robust_list(0x5555589fe660, 24) = 0
[pid 20777] chdir("./19934")            = 0
[pid 20777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20777] setpgid(0, 0)               = 0
[pid 20777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20777] write(3, "1000", 4)         = 4
[pid 20777] close(3)                    = 0
[pid 20777] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20777] write(1, "executing program\n", 18executing program
) = 18
[pid 20777] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20777] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20777] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20777] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20777] exit_group(0)               = ?
[pid 20777] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20777, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19934", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19934", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19934/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19934/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19934/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19934")                        = 0
mkdir("./19935", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20778
./strace-static-x86_64: Process 20778 attached
[pid 20778] set_robust_list(0x5555589fe660, 24) = 0
[pid 20778] chdir("./19935")            = 0
[pid 20778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20778] setpgid(0, 0)               = 0
[pid 20778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20778] write(3, "1000", 4)         = 4
[pid 20778] close(3)                    = 0
[pid 20778] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20778] write(1, "executing program\n", 18executing program
) = 18
[pid 20778] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20778] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20778] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20778] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20778] exit_group(0)               = ?
[pid 20778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19935", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19935", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19935/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19935/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19935/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19935")                        = 0
mkdir("./19936", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20779
./strace-static-x86_64: Process 20779 attached
[pid 20779] set_robust_list(0x5555589fe660, 24) = 0
[pid 20779] chdir("./19936")            = 0
[pid 20779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20779] setpgid(0, 0)               = 0
[pid 20779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20779] write(3, "1000", 4)         = 4
[pid 20779] close(3)                    = 0
[pid 20779] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20779] write(1, "executing program\n", 18executing program
) = 18
[pid 20779] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20779] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20779] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20779] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20779] exit_group(0)               = ?
[pid 20779] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20779, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19936", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19936", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19936/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19936/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19936/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19936")                        = 0
mkdir("./19937", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20780 attached
, child_tidptr=0x5555589fe650) = 20780
[pid 20780] set_robust_list(0x5555589fe660, 24) = 0
[pid 20780] chdir("./19937")            = 0
[pid 20780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20780] setpgid(0, 0)               = 0
[pid 20780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20780] write(3, "1000", 4)         = 4
[pid 20780] close(3)                    = 0
[pid 20780] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20780] write(1, "executing program\n", 18) = 18
[pid 20780] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20780] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20780] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20780] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20780] exit_group(0)               = ?
[pid 20780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19937", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19937", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19937/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19937/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19937/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19937")                        = 0
mkdir("./19938", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20781 attached
, child_tidptr=0x5555589fe650) = 20781
[pid 20781] set_robust_list(0x5555589fe660, 24) = 0
[pid 20781] chdir("./19938")            = 0
[pid 20781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20781] setpgid(0, 0)               = 0
[pid 20781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20781] write(3, "1000", 4)         = 4
[pid 20781] close(3)                    = 0
[pid 20781] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20781] write(1, "executing program\n", 18) = 18
[pid 20781] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7executing program
, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20781] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20781] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20781] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20781] exit_group(0)               = ?
[pid 20781] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20781, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19938", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19938", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19938/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19938/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19938/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19938")                        = 0
mkdir("./19939", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20782
./strace-static-x86_64: Process 20782 attached
[pid 20782] set_robust_list(0x5555589fe660, 24) = 0
[pid 20782] chdir("./19939")            = 0
[pid 20782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20782] setpgid(0, 0)               = 0
[pid 20782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20782] write(3, "1000", 4)         = 4
[pid 20782] close(3)                    = 0
[pid 20782] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20782] write(1, "executing program\n", 18) = 18
[pid 20782] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20782] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20782] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20782] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20782] exit_group(0)               = ?
[pid 20782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19939", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19939", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19939/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19939/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19939/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19939")                        = 0
mkdir("./19940", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20783
./strace-static-x86_64: Process 20783 attached
[pid 20783] set_robust_list(0x5555589fe660, 24) = 0
[pid 20783] chdir("./19940")            = 0
[pid 20783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20783] setpgid(0, 0)               = 0
[pid 20783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20783] write(3, "1000", 4)         = 4
[pid 20783] close(3)                    = 0
[pid 20783] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20783] write(1, "executing program\n", 18) = 18
[pid 20783] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20783] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20783] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20783] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20783] exit_group(0)               = ?
[pid 20783] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20783, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19940", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19940", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19940/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19940/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19940/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19940")                        = 0
mkdir("./19941", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20784 attached
, child_tidptr=0x5555589fe650) = 20784
[pid 20784] set_robust_list(0x5555589fe660, 24) = 0
[pid 20784] chdir("./19941")            = 0
[pid 20784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20784] setpgid(0, 0)               = 0
[pid 20784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20784] write(3, "1000", 4)         = 4
[pid 20784] close(3)                    = 0
[pid 20784] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20784] write(1, "executing program\n", 18executing program
) = 18
[pid 20784] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20784] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20784] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20784] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20784] exit_group(0)               = ?
[pid 20784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19941", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19941", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19941/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19941/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19941/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19941")                        = 0
mkdir("./19942", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20785
./strace-static-x86_64: Process 20785 attached
[pid 20785] set_robust_list(0x5555589fe660, 24) = 0
[pid 20785] chdir("./19942")            = 0
[pid 20785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20785] setpgid(0, 0)               = 0
[pid 20785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20785] write(3, "1000", 4)         = 4
[pid 20785] close(3)                    = 0
[pid 20785] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20785] write(1, "executing program\n", 18executing program
) = 18
[pid 20785] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20785] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20785] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20785] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20785] exit_group(0)               = ?
[pid 20785] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20785, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19942", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19942", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19942/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19942/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19942/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19942")                        = 0
mkdir("./19943", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20786
./strace-static-x86_64: Process 20786 attached
[pid 20786] set_robust_list(0x5555589fe660, 24) = 0
[pid 20786] chdir("./19943")            = 0
[pid 20786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20786] setpgid(0, 0)               = 0
[pid 20786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20786] write(3, "1000", 4)         = 4
[pid 20786] close(3)                    = 0
[pid 20786] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20786] write(1, "executing program\n", 18executing program
) = 18
[pid 20786] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20786] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20786] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20786] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20786] exit_group(0)               = ?
[pid 20786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19943", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19943", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19943/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19943/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19943/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19943")                        = 0
mkdir("./19944", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20787
./strace-static-x86_64: Process 20787 attached
[pid 20787] set_robust_list(0x5555589fe660, 24) = 0
[pid 20787] chdir("./19944")            = 0
[pid 20787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20787] setpgid(0, 0)               = 0
[pid 20787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20787] write(3, "1000", 4)         = 4
[pid 20787] close(3)                    = 0
[pid 20787] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20787] write(1, "executing program\n", 18) = 18
[pid 20787] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20787] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20787] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20787] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20787] exit_group(0)               = ?
[pid 20787] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20787, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19944", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19944", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19944/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19944/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19944/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19944")                        = 0
mkdir("./19945", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20788 attached
, child_tidptr=0x5555589fe650) = 20788
[pid 20788] set_robust_list(0x5555589fe660, 24) = 0
[pid 20788] chdir("./19945")            = 0
[pid 20788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20788] setpgid(0, 0)               = 0
[pid 20788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20788] write(3, "1000", 4)         = 4
[pid 20788] close(3)                    = 0
[pid 20788] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20788] write(1, "executing program\n", 18) = 18
[pid 20788] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20788] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20788] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20788] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20788] exit_group(0)               = ?
[pid 20788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19945", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19945", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19945/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19945/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19945/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19945")                        = 0
mkdir("./19946", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20789 attached
, child_tidptr=0x5555589fe650) = 20789
[pid 20789] set_robust_list(0x5555589fe660, 24) = 0
[pid 20789] chdir("./19946")            = 0
[pid 20789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20789] setpgid(0, 0)               = 0
[pid 20789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20789] write(3, "1000", 4)         = 4
[pid 20789] close(3)                    = 0
[pid 20789] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20789] write(1, "executing program\n", 18executing program
) = 18
[pid 20789] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20789] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20789] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20789] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20789] exit_group(0)               = ?
[pid 20789] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20789, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19946", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19946", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19946/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19946/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19946/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19946")                        = 0
mkdir("./19947", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20790
./strace-static-x86_64: Process 20790 attached
[pid 20790] set_robust_list(0x5555589fe660, 24) = 0
[pid 20790] chdir("./19947")            = 0
[pid 20790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20790] setpgid(0, 0)               = 0
[pid 20790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20790] write(3, "1000", 4)         = 4
[pid 20790] close(3)                    = 0
[pid 20790] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20790] write(1, "executing program\n", 18) = 18
[pid 20790] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20790] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20790] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20790] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20790] exit_group(0)               = ?
[pid 20790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19947", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19947", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19947/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19947/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19947/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19947")                        = 0
mkdir("./19948", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20791
./strace-static-x86_64: Process 20791 attached
[pid 20791] set_robust_list(0x5555589fe660, 24) = 0
[pid 20791] chdir("./19948")            = 0
[pid 20791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20791] setpgid(0, 0)               = 0
[pid 20791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20791] write(3, "1000", 4)         = 4
[pid 20791] close(3)                    = 0
[pid 20791] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20791] write(1, "executing program\n", 18executing program
) = 18
[pid 20791] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20791] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20791] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20791] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20791] exit_group(0)               = ?
[pid 20791] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20791, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19948", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19948", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19948/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19948/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19948/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19948")                        = 0
mkdir("./19949", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20792 attached
, child_tidptr=0x5555589fe650) = 20792
[pid 20792] set_robust_list(0x5555589fe660, 24) = 0
[pid 20792] chdir("./19949")            = 0
[pid 20792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20792] setpgid(0, 0)               = 0
[pid 20792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20792] write(3, "1000", 4)         = 4
[pid 20792] close(3)                    = 0
[pid 20792] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20792] write(1, "executing program\n", 18executing program
) = 18
[pid 20792] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20792] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20792] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20792] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20792] exit_group(0)               = ?
[pid 20792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19949", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19949", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19949/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19949/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19949/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19949")                        = 0
mkdir("./19950", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20793
./strace-static-x86_64: Process 20793 attached
[pid 20793] set_robust_list(0x5555589fe660, 24) = 0
[pid 20793] chdir("./19950")            = 0
[pid 20793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20793] setpgid(0, 0)               = 0
[pid 20793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20793] write(3, "1000", 4)         = 4
[pid 20793] close(3)                    = 0
[pid 20793] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20793] write(1, "executing program\n", 18executing program
) = 18
[pid 20793] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20793] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20793] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20793] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20793] exit_group(0)               = ?
[pid 20793] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20793, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19950", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19950", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19950/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19950/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19950/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19950")                        = 0
mkdir("./19951", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20794
./strace-static-x86_64: Process 20794 attached
[pid 20794] set_robust_list(0x5555589fe660, 24) = 0
[pid 20794] chdir("./19951")            = 0
[pid 20794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20794] setpgid(0, 0)               = 0
[pid 20794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20794] write(3, "1000", 4)         = 4
[pid 20794] close(3)                    = 0
[pid 20794] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20794] write(1, "executing program\n", 18executing program
) = 18
[pid 20794] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20794] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20794] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20794] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20794] exit_group(0)               = ?
[pid 20794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19951", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19951", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19951/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19951/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19951/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19951")                        = 0
mkdir("./19952", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20795 attached
, child_tidptr=0x5555589fe650) = 20795
[pid 20795] set_robust_list(0x5555589fe660, 24) = 0
[pid 20795] chdir("./19952")            = 0
[pid 20795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20795] setpgid(0, 0)               = 0
[pid 20795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20795] write(3, "1000", 4)         = 4
[pid 20795] close(3)                    = 0
[pid 20795] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20795] write(1, "executing program\n", 18executing program
) = 18
[pid 20795] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20795] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20795] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20795] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20795] exit_group(0)               = ?
[pid 20795] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20795, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19952", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19952", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19952/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19952/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19952/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19952")                        = 0
mkdir("./19953", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20796 attached
, child_tidptr=0x5555589fe650) = 20796
[pid 20796] set_robust_list(0x5555589fe660, 24) = 0
[pid 20796] chdir("./19953")            = 0
[pid 20796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20796] setpgid(0, 0)               = 0
[pid 20796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20796] write(3, "1000", 4)         = 4
[pid 20796] close(3)                    = 0
[pid 20796] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20796] write(1, "executing program\n", 18executing program
) = 18
[pid 20796] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20796] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20796] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20796] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20796] exit_group(0)               = ?
[pid 20796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19953", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19953", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19953/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19953/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19953/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19953")                        = 0
mkdir("./19954", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20797
./strace-static-x86_64: Process 20797 attached
[pid 20797] set_robust_list(0x5555589fe660, 24) = 0
[pid 20797] chdir("./19954")            = 0
[pid 20797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20797] setpgid(0, 0)               = 0
[pid 20797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20797] write(3, "1000", 4)         = 4
[pid 20797] close(3)                    = 0
[pid 20797] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20797] write(1, "executing program\n", 18executing program
) = 18
[pid 20797] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20797] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20797] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20797] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20797] exit_group(0)               = ?
[pid 20797] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20797, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19954", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19954", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19954/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19954/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19954/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19954")                        = 0
mkdir("./19955", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20798 attached
, child_tidptr=0x5555589fe650) = 20798
[pid 20798] set_robust_list(0x5555589fe660, 24) = 0
[pid 20798] chdir("./19955")            = 0
[pid 20798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20798] setpgid(0, 0)               = 0
[pid 20798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20798] write(3, "1000", 4)         = 4
[pid 20798] close(3)                    = 0
[pid 20798] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20798] write(1, "executing program\n", 18executing program
) = 18
[pid 20798] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20798] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20798] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20798] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20798] exit_group(0)               = ?
[pid 20798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19955", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19955", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19955/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19955/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19955/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19955")                        = 0
mkdir("./19956", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20799 attached
, child_tidptr=0x5555589fe650) = 20799
[pid 20799] set_robust_list(0x5555589fe660, 24) = 0
[pid 20799] chdir("./19956")            = 0
[pid 20799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20799] setpgid(0, 0)               = 0
[pid 20799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20799] write(3, "1000", 4)         = 4
[pid 20799] close(3)                    = 0
[pid 20799] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20799] write(1, "executing program\n", 18) = 18
[pid 20799] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20799] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20799] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20799] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20799] exit_group(0)               = ?
[pid 20799] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20799, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19956", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19956", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19956/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19956/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19956/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19956")                        = 0
mkdir("./19957", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20800 attached
, child_tidptr=0x5555589fe650) = 20800
[pid 20800] set_robust_list(0x5555589fe660, 24) = 0
[pid 20800] chdir("./19957")            = 0
[pid 20800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20800] setpgid(0, 0)               = 0
[pid 20800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20800] write(3, "1000", 4)         = 4
[pid 20800] close(3)                    = 0
[pid 20800] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20800] write(1, "executing program\n", 18executing program
) = 18
[pid 20800] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20800] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20800] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20800] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20800] exit_group(0)               = ?
[pid 20800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19957", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19957", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19957/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19957/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19957/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19957")                        = 0
mkdir("./19958", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20801
./strace-static-x86_64: Process 20801 attached
[pid 20801] set_robust_list(0x5555589fe660, 24) = 0
[pid 20801] chdir("./19958")            = 0
[pid 20801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20801] setpgid(0, 0)               = 0
[pid 20801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20801] write(3, "1000", 4)         = 4
[pid 20801] close(3)                    = 0
[pid 20801] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20801] write(1, "executing program\n", 18executing program
) = 18
[pid 20801] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20801] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20801] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20801] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20801] exit_group(0)               = ?
[pid 20801] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20801, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19958", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19958", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19958/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19958/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19958/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19958")                        = 0
mkdir("./19959", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20802
./strace-static-x86_64: Process 20802 attached
[pid 20802] set_robust_list(0x5555589fe660, 24) = 0
[pid 20802] chdir("./19959")            = 0
[pid 20802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20802] setpgid(0, 0)               = 0
[pid 20802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20802] write(3, "1000", 4)         = 4
[pid 20802] close(3)                    = 0
[pid 20802] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20802] write(1, "executing program\n", 18executing program
) = 18
[pid 20802] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20802] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20802] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20802] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20802] exit_group(0)               = ?
[pid 20802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19959", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19959", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19959/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19959/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19959/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19959")                        = 0
mkdir("./19960", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20803
./strace-static-x86_64: Process 20803 attached
[pid 20803] set_robust_list(0x5555589fe660, 24) = 0
[pid 20803] chdir("./19960")            = 0
[pid 20803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20803] setpgid(0, 0)               = 0
[pid 20803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20803] write(3, "1000", 4)         = 4
[pid 20803] close(3)                    = 0
[pid 20803] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20803] write(1, "executing program\n", 18) = 18
[pid 20803] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20803] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20803] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20803] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20803] exit_group(0)               = ?
[pid 20803] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20803, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19960", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19960", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19960/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19960/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19960/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19960")                        = 0
mkdir("./19961", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20804
./strace-static-x86_64: Process 20804 attached
[pid 20804] set_robust_list(0x5555589fe660, 24) = 0
[pid 20804] chdir("./19961")            = 0
[pid 20804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20804] setpgid(0, 0)               = 0
[pid 20804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20804] write(3, "1000", 4)         = 4
[pid 20804] close(3)                    = 0
[pid 20804] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20804] write(1, "executing program\n", 18executing program
) = 18
[pid 20804] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20804] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20804] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20804] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20804] exit_group(0)               = ?
[pid 20804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19961", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19961", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19961/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19961/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19961/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19961")                        = 0
mkdir("./19962", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20805
./strace-static-x86_64: Process 20805 attached
[pid 20805] set_robust_list(0x5555589fe660, 24) = 0
[pid 20805] chdir("./19962")            = 0
[pid 20805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20805] setpgid(0, 0)               = 0
[pid 20805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20805] write(3, "1000", 4)         = 4
[pid 20805] close(3)                    = 0
[pid 20805] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20805] write(1, "executing program\n", 18executing program
) = 18
[pid 20805] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20805] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20805] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20805] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20805] exit_group(0)               = ?
[pid 20805] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20805, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19962", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19962", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19962/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19962/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19962/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19962")                        = 0
mkdir("./19963", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20806 attached
, child_tidptr=0x5555589fe650) = 20806
[pid 20806] set_robust_list(0x5555589fe660, 24) = 0
[pid 20806] chdir("./19963")            = 0
[pid 20806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20806] setpgid(0, 0)               = 0
[pid 20806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20806] write(3, "1000", 4)         = 4
[pid 20806] close(3)                    = 0
[pid 20806] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20806] write(1, "executing program\n", 18executing program
) = 18
[pid 20806] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20806] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20806] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20806] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20806] exit_group(0)               = ?
[pid 20806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19963", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19963", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19963/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19963/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19963/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19963")                        = 0
mkdir("./19964", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20807
./strace-static-x86_64: Process 20807 attached
[pid 20807] set_robust_list(0x5555589fe660, 24) = 0
[pid 20807] chdir("./19964")            = 0
[pid 20807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20807] setpgid(0, 0)               = 0
[pid 20807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20807] write(3, "1000", 4)         = 4
[pid 20807] close(3)                    = 0
[pid 20807] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20807] write(1, "executing program\n", 18) = 18
[pid 20807] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20807] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20807] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20807] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20807] exit_group(0)               = ?
[pid 20807] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20807, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19964", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19964", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19964/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19964/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19964/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19964")                        = 0
mkdir("./19965", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20808
./strace-static-x86_64: Process 20808 attached
[pid 20808] set_robust_list(0x5555589fe660, 24) = 0
[pid 20808] chdir("./19965")            = 0
[pid 20808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20808] setpgid(0, 0)               = 0
[pid 20808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20808] write(3, "1000", 4)         = 4
[pid 20808] close(3)                    = 0
[pid 20808] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20808] write(1, "executing program\n", 18executing program
) = 18
[pid 20808] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20808] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20808] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20808] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20808] exit_group(0)               = ?
[pid 20808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19965", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19965", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19965/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19965/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19965/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19965")                        = 0
mkdir("./19966", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20809
./strace-static-x86_64: Process 20809 attached
[pid 20809] set_robust_list(0x5555589fe660, 24) = 0
[pid 20809] chdir("./19966")            = 0
[pid 20809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20809] setpgid(0, 0)               = 0
[pid 20809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20809] write(3, "1000", 4)         = 4
[pid 20809] close(3)                    = 0
[pid 20809] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20809] write(1, "executing program\n", 18executing program
) = 18
[pid 20809] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20809] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20809] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20809] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20809] exit_group(0)               = ?
[pid 20809] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20809, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19966", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19966", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19966/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19966/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19966/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19966")                        = 0
mkdir("./19967", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20810
./strace-static-x86_64: Process 20810 attached
[pid 20810] set_robust_list(0x5555589fe660, 24) = 0
[pid 20810] chdir("./19967")            = 0
[pid 20810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20810] setpgid(0, 0)               = 0
[pid 20810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20810] write(3, "1000", 4)         = 4
[pid 20810] close(3)                    = 0
[pid 20810] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20810] write(1, "executing program\n", 18executing program
) = 18
[pid 20810] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20810] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20810] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20810] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20810] exit_group(0)               = ?
[pid 20810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19967", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19967", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19967/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19967/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19967/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19967")                        = 0
mkdir("./19968", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20811
./strace-static-x86_64: Process 20811 attached
[pid 20811] set_robust_list(0x5555589fe660, 24) = 0
[pid 20811] chdir("./19968")            = 0
[pid 20811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20811] setpgid(0, 0)               = 0
[pid 20811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20811] write(3, "1000", 4)         = 4
[pid 20811] close(3)                    = 0
[pid 20811] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20811] write(1, "executing program\n", 18) = 18
[pid 20811] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20811] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20811] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20811] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20811] exit_group(0)               = ?
[pid 20811] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20811, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19968", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19968", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19968/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19968/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19968/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19968")                        = 0
mkdir("./19969", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20812 attached
, child_tidptr=0x5555589fe650) = 20812
[pid 20812] set_robust_list(0x5555589fe660, 24) = 0
[pid 20812] chdir("./19969")            = 0
[pid 20812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20812] setpgid(0, 0)               = 0
[pid 20812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20812] write(3, "1000", 4)         = 4
[pid 20812] close(3)                    = 0
[pid 20812] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20812] write(1, "executing program\n", 18) = 18
[pid 20812] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20812] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20812] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20812] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20812] exit_group(0)               = ?
[pid 20812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19969", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19969", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19969/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19969/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19969/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19969")                        = 0
mkdir("./19970", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20813 attached
, child_tidptr=0x5555589fe650) = 20813
[pid 20813] set_robust_list(0x5555589fe660, 24) = 0
[pid 20813] chdir("./19970")            = 0
[pid 20813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20813] setpgid(0, 0)               = 0
[pid 20813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20813] write(3, "1000", 4)         = 4
[pid 20813] close(3)                    = 0
[pid 20813] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20813] write(1, "executing program\n", 18executing program
) = 18
[pid 20813] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20813] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20813] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20813] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20813] exit_group(0)               = ?
[pid 20813] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20813, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19970", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19970", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19970/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19970/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19970/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19970")                        = 0
mkdir("./19971", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20814
./strace-static-x86_64: Process 20814 attached
[pid 20814] set_robust_list(0x5555589fe660, 24) = 0
[pid 20814] chdir("./19971")            = 0
[pid 20814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20814] setpgid(0, 0)               = 0
[pid 20814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20814] write(3, "1000", 4)         = 4
[pid 20814] close(3)                    = 0
[pid 20814] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20814] write(1, "executing program\n", 18executing program
) = 18
[pid 20814] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20814] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20814] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20814] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20814] exit_group(0)               = ?
[pid 20814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19971", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19971", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19971/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19971/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19971/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19971")                        = 0
mkdir("./19972", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20815 attached
, child_tidptr=0x5555589fe650) = 20815
[pid 20815] set_robust_list(0x5555589fe660, 24) = 0
[pid 20815] chdir("./19972")            = 0
[pid 20815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20815] setpgid(0, 0)               = 0
[pid 20815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20815] write(3, "1000", 4)         = 4
[pid 20815] close(3)                    = 0
[pid 20815] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20815] write(1, "executing program\n", 18executing program
) = 18
[pid 20815] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20815] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20815] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20815] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20815] exit_group(0)               = ?
[pid 20815] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20815, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19972", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19972", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19972/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19972/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19972/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19972")                        = 0
mkdir("./19973", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20816 attached
, child_tidptr=0x5555589fe650) = 20816
[pid 20816] set_robust_list(0x5555589fe660, 24) = 0
[pid 20816] chdir("./19973")            = 0
[pid 20816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20816] setpgid(0, 0)               = 0
[pid 20816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20816] write(3, "1000", 4)         = 4
[pid 20816] close(3)                    = 0
[pid 20816] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20816] write(1, "executing program\n", 18) = 18
[pid 20816] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20816] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20816] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20816] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20816] exit_group(0)               = ?
[pid 20816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19973", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19973", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19973/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19973/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19973/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19973")                        = 0
mkdir("./19974", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20817 attached
, child_tidptr=0x5555589fe650) = 20817
[pid 20817] set_robust_list(0x5555589fe660, 24) = 0
[pid 20817] chdir("./19974")            = 0
[pid 20817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20817] setpgid(0, 0)               = 0
[pid 20817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20817] write(3, "1000", 4)         = 4
[pid 20817] close(3)                    = 0
[pid 20817] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20817] write(1, "executing program\n", 18executing program
) = 18
[pid 20817] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20817] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20817] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20817] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20817] exit_group(0)               = ?
[pid 20817] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20817, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19974", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19974", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19974/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19974/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19974/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19974")                        = 0
mkdir("./19975", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20818
./strace-static-x86_64: Process 20818 attached
[pid 20818] set_robust_list(0x5555589fe660, 24) = 0
[pid 20818] chdir("./19975")            = 0
[pid 20818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20818] setpgid(0, 0)               = 0
[pid 20818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20818] write(3, "1000", 4)         = 4
[pid 20818] close(3)                    = 0
[pid 20818] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20818] write(1, "executing program\n", 18executing program
) = 18
[pid 20818] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20818] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20818] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20818] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20818] exit_group(0)               = ?
[pid 20818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19975", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19975", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19975/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19975/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19975/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19975")                        = 0
mkdir("./19976", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20819 attached
, child_tidptr=0x5555589fe650) = 20819
[pid 20819] set_robust_list(0x5555589fe660, 24) = 0
[pid 20819] chdir("./19976")            = 0
[pid 20819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20819] setpgid(0, 0)               = 0
[pid 20819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20819] write(3, "1000", 4)         = 4
[pid 20819] close(3)                    = 0
[pid 20819] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20819] write(1, "executing program\n", 18executing program
) = 18
[pid 20819] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20819] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20819] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20819] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20819] exit_group(0)               = ?
[pid 20819] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20819, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19976", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19976", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19976/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19976/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19976/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19976")                        = 0
mkdir("./19977", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20820
./strace-static-x86_64: Process 20820 attached
[pid 20820] set_robust_list(0x5555589fe660, 24) = 0
[pid 20820] chdir("./19977")            = 0
[pid 20820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20820] setpgid(0, 0)               = 0
[pid 20820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20820] write(3, "1000", 4)         = 4
[pid 20820] close(3)                    = 0
[pid 20820] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20820] write(1, "executing program\n", 18executing program
) = 18
[pid 20820] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20820] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20820] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20820] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20820] exit_group(0)               = ?
[pid 20820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19977", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19977", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19977/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19977/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19977/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19977")                        = 0
mkdir("./19978", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20821
./strace-static-x86_64: Process 20821 attached
[pid 20821] set_robust_list(0x5555589fe660, 24) = 0
[pid 20821] chdir("./19978")            = 0
[pid 20821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20821] setpgid(0, 0)               = 0
[pid 20821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20821] write(3, "1000", 4)         = 4
[pid 20821] close(3)                    = 0
[pid 20821] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20821] write(1, "executing program\n", 18) = 18
[pid 20821] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20821] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20821] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20821] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20821] exit_group(0)               = ?
[pid 20821] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20821, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19978", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19978", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19978/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19978/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19978/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19978")                        = 0
mkdir("./19979", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20822
./strace-static-x86_64: Process 20822 attached
[pid 20822] set_robust_list(0x5555589fe660, 24) = 0
[pid 20822] chdir("./19979")            = 0
[pid 20822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20822] setpgid(0, 0)               = 0
[pid 20822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20822] write(3, "1000", 4)         = 4
[pid 20822] close(3)                    = 0
[pid 20822] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20822] write(1, "executing program\n", 18) = 18
[pid 20822] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20822] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20822] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20822] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20822] exit_group(0)               = ?
[pid 20822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19979", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19979", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19979/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19979/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19979/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19979")                        = 0
mkdir("./19980", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20823
./strace-static-x86_64: Process 20823 attached
[pid 20823] set_robust_list(0x5555589fe660, 24) = 0
[pid 20823] chdir("./19980")            = 0
[pid 20823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20823] setpgid(0, 0)               = 0
[pid 20823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20823] write(3, "1000", 4)         = 4
[pid 20823] close(3)                    = 0
[pid 20823] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20823] write(1, "executing program\n", 18executing program
) = 18
[pid 20823] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20823] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20823] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20823] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20823] exit_group(0)               = ?
[pid 20823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20823, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19980", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19980", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19980/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19980/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19980/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19980")                        = 0
mkdir("./19981", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20824
./strace-static-x86_64: Process 20824 attached
[pid 20824] set_robust_list(0x5555589fe660, 24) = 0
[pid 20824] chdir("./19981")            = 0
[pid 20824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20824] setpgid(0, 0)               = 0
[pid 20824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20824] write(3, "1000", 4)         = 4
[pid 20824] close(3)                    = 0
[pid 20824] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20824] write(1, "executing program\n", 18executing program
) = 18
[pid 20824] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20824] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20824] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20824] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20824] exit_group(0)               = ?
[pid 20824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19981", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19981", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19981/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19981/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19981/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19981")                        = 0
mkdir("./19982", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20825
./strace-static-x86_64: Process 20825 attached
[pid 20825] set_robust_list(0x5555589fe660, 24) = 0
[pid 20825] chdir("./19982")            = 0
[pid 20825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20825] setpgid(0, 0)               = 0
[pid 20825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20825] write(3, "1000", 4)         = 4
[pid 20825] close(3)                    = 0
[pid 20825] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20825] write(1, "executing program\n", 18executing program
) = 18
[pid 20825] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20825] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20825] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20825] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20825] exit_group(0)               = ?
[pid 20825] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20825, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19982", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19982", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19982/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19982/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19982/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19982")                        = 0
mkdir("./19983", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20826 attached
, child_tidptr=0x5555589fe650) = 20826
[pid 20826] set_robust_list(0x5555589fe660, 24) = 0
[pid 20826] chdir("./19983")            = 0
[pid 20826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20826] setpgid(0, 0)               = 0
[pid 20826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20826] write(3, "1000", 4)         = 4
[pid 20826] close(3)                    = 0
[pid 20826] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20826] write(1, "executing program\n", 18executing program
) = 18
[pid 20826] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20826] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20826] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20826] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20826] exit_group(0)               = ?
[pid 20826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19983", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19983", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19983/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19983/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19983/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19983")                        = 0
mkdir("./19984", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20827 attached
, child_tidptr=0x5555589fe650) = 20827
[pid 20827] set_robust_list(0x5555589fe660, 24) = 0
[pid 20827] chdir("./19984")            = 0
[pid 20827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20827] setpgid(0, 0)               = 0
[pid 20827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20827] write(3, "1000", 4)         = 4
[pid 20827] close(3)                    = 0
[pid 20827] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20827] write(1, "executing program\n", 18executing program
) = 18
[pid 20827] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20827] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20827] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20827] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20827] exit_group(0)               = ?
[pid 20827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20827, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19984", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19984", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19984/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19984/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19984/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19984")                        = 0
mkdir("./19985", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20828 attached
, child_tidptr=0x5555589fe650) = 20828
[pid 20828] set_robust_list(0x5555589fe660, 24) = 0
[pid 20828] chdir("./19985")            = 0
[pid 20828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20828] setpgid(0, 0)               = 0
[pid 20828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20828] write(3, "1000", 4)         = 4
[pid 20828] close(3)                    = 0
[pid 20828] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20828] write(1, "executing program\n", 18executing program
) = 18
[pid 20828] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20828] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20828] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20828] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20828] exit_group(0)               = ?
[pid 20828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19985", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19985", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19985/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19985/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19985/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19985")                        = 0
mkdir("./19986", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20829
./strace-static-x86_64: Process 20829 attached
[pid 20829] set_robust_list(0x5555589fe660, 24) = 0
[pid 20829] chdir("./19986")            = 0
[pid 20829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20829] setpgid(0, 0)               = 0
[pid 20829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20829] write(3, "1000", 4)         = 4
[pid 20829] close(3)                    = 0
[pid 20829] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20829] write(1, "executing program\n", 18executing program
) = 18
[pid 20829] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20829] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20829] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20829] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20829] exit_group(0)               = ?
[pid 20829] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20829, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19986", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19986", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19986/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19986/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19986/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19986")                        = 0
mkdir("./19987", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20830
./strace-static-x86_64: Process 20830 attached
[pid 20830] set_robust_list(0x5555589fe660, 24) = 0
[pid 20830] chdir("./19987")            = 0
[pid 20830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20830] setpgid(0, 0)               = 0
[pid 20830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20830] write(3, "1000", 4)         = 4
[pid 20830] close(3)                    = 0
[pid 20830] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20830] write(1, "executing program\n", 18executing program
) = 18
[pid 20830] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20830] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20830] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20830] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20830] exit_group(0)               = ?
[pid 20830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19987", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19987", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19987/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19987/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19987/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19987")                        = 0
mkdir("./19988", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20831 attached
, child_tidptr=0x5555589fe650) = 20831
[pid 20831] set_robust_list(0x5555589fe660, 24) = 0
[pid 20831] chdir("./19988")            = 0
[pid 20831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20831] setpgid(0, 0)               = 0
[pid 20831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20831] write(3, "1000", 4)         = 4
[pid 20831] close(3)                    = 0
[pid 20831] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20831] write(1, "executing program\n", 18executing program
) = 18
[pid 20831] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20831] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20831] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20831] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20831] exit_group(0)               = ?
[pid 20831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20831, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19988", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19988", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19988/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19988/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19988/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19988")                        = 0
mkdir("./19989", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20832
./strace-static-x86_64: Process 20832 attached
[pid 20832] set_robust_list(0x5555589fe660, 24) = 0
[pid 20832] chdir("./19989")            = 0
[pid 20832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20832] setpgid(0, 0)               = 0
[pid 20832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20832] write(3, "1000", 4)         = 4
[pid 20832] close(3)                    = 0
[pid 20832] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20832] write(1, "executing program\n", 18executing program
) = 18
[pid 20832] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20832] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20832] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20832] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20832] exit_group(0)               = ?
[pid 20832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19989", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19989", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19989/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19989/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19989/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19989")                        = 0
mkdir("./19990", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20833
./strace-static-x86_64: Process 20833 attached
[pid 20833] set_robust_list(0x5555589fe660, 24) = 0
[pid 20833] chdir("./19990")            = 0
[pid 20833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20833] setpgid(0, 0)               = 0
[pid 20833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20833] write(3, "1000", 4)         = 4
[pid 20833] close(3)                    = 0
[pid 20833] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20833] write(1, "executing program\n", 18) = 18
[pid 20833] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20833] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20833] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20833] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20833] exit_group(0)               = ?
[pid 20833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20833, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19990", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19990", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19990/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19990/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19990/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19990")                        = 0
mkdir("./19991", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20834 attached
, child_tidptr=0x5555589fe650) = 20834
[pid 20834] set_robust_list(0x5555589fe660, 24) = 0
[pid 20834] chdir("./19991")            = 0
[pid 20834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20834] setpgid(0, 0)               = 0
[pid 20834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20834] write(3, "1000", 4)         = 4
[pid 20834] close(3)                    = 0
[pid 20834] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20834] write(1, "executing program\n", 18executing program
) = 18
[pid 20834] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20834] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20834] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20834] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20834] exit_group(0)               = ?
[pid 20834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19991", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19991", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19991/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19991/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19991/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19991")                        = 0
mkdir("./19992", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20835
./strace-static-x86_64: Process 20835 attached
[pid 20835] set_robust_list(0x5555589fe660, 24) = 0
[pid 20835] chdir("./19992")            = 0
[pid 20835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20835] setpgid(0, 0)               = 0
[pid 20835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20835] write(3, "1000", 4)         = 4
[pid 20835] close(3)                    = 0
[pid 20835] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20835] write(1, "executing program\n", 18executing program
) = 18
[pid 20835] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20835] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20835] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20835] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20835] exit_group(0)               = ?
[pid 20835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20835, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19992", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19992", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19992/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19992/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19992/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19992")                        = 0
mkdir("./19993", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20836
./strace-static-x86_64: Process 20836 attached
[pid 20836] set_robust_list(0x5555589fe660, 24) = 0
[pid 20836] chdir("./19993")            = 0
[pid 20836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20836] setpgid(0, 0)               = 0
[pid 20836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20836] write(3, "1000", 4)         = 4
[pid 20836] close(3)                    = 0
[pid 20836] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20836] write(1, "executing program\n", 18executing program
) = 18
[pid 20836] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20836] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20836] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20836] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20836] exit_group(0)               = ?
[pid 20836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19993", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19993", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19993/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19993/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19993/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19993")                        = 0
mkdir("./19994", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20837 attached
, child_tidptr=0x5555589fe650) = 20837
[pid 20837] set_robust_list(0x5555589fe660, 24) = 0
[pid 20837] chdir("./19994")            = 0
[pid 20837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20837] setpgid(0, 0)               = 0
[pid 20837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20837] write(3, "1000", 4)         = 4
[pid 20837] close(3)                    = 0
[pid 20837] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20837] write(1, "executing program\n", 18) = 18
[pid 20837] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20837] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20837] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20837] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20837] exit_group(0)               = ?
[pid 20837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20837, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19994", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19994", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19994/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19994/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19994/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19994")                        = 0
mkdir("./19995", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20839 attached
, child_tidptr=0x5555589fe650) = 20839
[pid 20839] set_robust_list(0x5555589fe660, 24) = 0
[pid 20839] chdir("./19995")            = 0
[pid 20839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20839] setpgid(0, 0)               = 0
[pid 20839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20839] write(3, "1000", 4)         = 4
[pid 20839] close(3)                    = 0
[pid 20839] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20839] write(1, "executing program\n", 18executing program
) = 18
[pid 20839] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20839] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20839] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20839] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20839] exit_group(0)               = ?
[pid 20839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20839, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19995", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19995", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19995/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19995/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19995/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19995")                        = 0
mkdir("./19996", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20840
./strace-static-x86_64: Process 20840 attached
[pid 20840] set_robust_list(0x5555589fe660, 24) = 0
[pid 20840] chdir("./19996")            = 0
[pid 20840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20840] setpgid(0, 0)               = 0
[pid 20840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20840] write(3, "1000", 4)         = 4
[pid 20840] close(3)                    = 0
[pid 20840] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20840] write(1, "executing program\n", 18executing program
) = 18
[pid 20840] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20840] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20840] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20840] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20840] exit_group(0)               = ?
[pid 20840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19996", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19996", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19996/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19996/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19996/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19996")                        = 0
mkdir("./19997", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20841 attached
 <unfinished ...>
[pid 20841] set_robust_list(0x5555589fe660, 24) = 0
[pid 20841] chdir("./19997" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20841
[pid 20841] <... chdir resumed>)        = 0
[pid 20841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20841] setpgid(0, 0)               = 0
[pid 20841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20841] write(3, "1000", 4)         = 4
[pid 20841] close(3)                    = 0
[pid 20841] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20841] write(1, "executing program\n", 18executing program
) = 18
[pid 20841] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20841] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20841] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20841] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20841] exit_group(0)               = ?
[pid 20841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20841, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19997", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19997", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19997/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19997/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19997/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19997")                        = 0
mkdir("./19998", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20842 attached
 <unfinished ...>
[pid 20842] set_robust_list(0x5555589fe660, 24) = 0
[pid 20842] chdir("./19998")            = 0
[pid 20842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20842] setpgid(0, 0)               = 0
[pid 20842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20842
[pid 20842] <... openat resumed>)       = 3
[pid 20842] write(3, "1000", 4)         = 4
[pid 20842] close(3)                    = 0
[pid 20842] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20842] write(1, "executing program\n", 18) = 18
[pid 20842] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20842] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20842] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20842] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20842] exit_group(0)               = ?
[pid 20842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19998", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19998", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19998/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19998/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19998/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19998")                        = 0
mkdir("./19999", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20843
./strace-static-x86_64: Process 20843 attached
[pid 20843] set_robust_list(0x5555589fe660, 24) = 0
[pid 20843] chdir("./19999")            = 0
[pid 20843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20843] setpgid(0, 0)               = 0
[pid 20843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20843] write(3, "1000", 4)         = 4
[pid 20843] close(3)                    = 0
[pid 20843] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20843] write(1, "executing program\n", 18executing program
) = 18
[pid 20843] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20843] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20843] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20843] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20843] exit_group(0)               = ?
[pid 20843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20843, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./19999", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./19999", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./19999/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./19999/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./19999/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./19999")                        = 0
mkdir("./20000", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20844
./strace-static-x86_64: Process 20844 attached
[pid 20844] set_robust_list(0x5555589fe660, 24) = 0
[pid 20844] chdir("./20000")            = 0
[pid 20844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20844] setpgid(0, 0)               = 0
[pid 20844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20844] write(3, "1000", 4)         = 4
[pid 20844] close(3)                    = 0
[pid 20844] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20844] write(1, "executing program\n", 18executing program
) = 18
[pid 20844] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20844] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20844] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20844] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20844] exit_group(0)               = ?
[pid 20844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20000", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20000", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20000/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20000/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20000/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20000")                        = 0
mkdir("./20001", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20845
./strace-static-x86_64: Process 20845 attached
[pid 20845] set_robust_list(0x5555589fe660, 24) = 0
[pid 20845] chdir("./20001")            = 0
[pid 20845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20845] setpgid(0, 0)               = 0
[pid 20845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20845] write(3, "1000", 4)         = 4
[pid 20845] close(3)                    = 0
[pid 20845] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20845] write(1, "executing program\n", 18executing program
) = 18
[pid 20845] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20845] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20845] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20845] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20845] exit_group(0)               = ?
[pid 20845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20845, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20001", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20001", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20001/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20001/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20001/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20001")                        = 0
mkdir("./20002", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20846
./strace-static-x86_64: Process 20846 attached
[pid 20846] set_robust_list(0x5555589fe660, 24) = 0
[pid 20846] chdir("./20002")            = 0
[pid 20846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20846] setpgid(0, 0)               = 0
[pid 20846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20846] write(3, "1000", 4)         = 4
[pid 20846] close(3)                    = 0
[pid 20846] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20846] write(1, "executing program\n", 18executing program
) = 18
[pid 20846] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20846] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20846] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20846] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20846] exit_group(0)               = ?
[pid 20846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20002", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20002", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20002/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20002/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20002/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20002")                        = 0
mkdir("./20003", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20847
./strace-static-x86_64: Process 20847 attached
[pid 20847] set_robust_list(0x5555589fe660, 24) = 0
[pid 20847] chdir("./20003")            = 0
[pid 20847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20847] setpgid(0, 0)               = 0
[pid 20847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20847] write(3, "1000", 4)         = 4
[pid 20847] close(3)                    = 0
[pid 20847] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20847] write(1, "executing program\n", 18executing program
) = 18
[pid 20847] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20847] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20847] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20847] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20847] exit_group(0)               = ?
[pid 20847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20847, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20003", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20003", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20003/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20003/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20003/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20003")                        = 0
mkdir("./20004", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20848
./strace-static-x86_64: Process 20848 attached
[pid 20848] set_robust_list(0x5555589fe660, 24) = 0
[pid 20848] chdir("./20004")            = 0
[pid 20848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20848] setpgid(0, 0)               = 0
[pid 20848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20848] write(3, "1000", 4)         = 4
[pid 20848] close(3)                    = 0
[pid 20848] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20848] write(1, "executing program\n", 18) = 18
[pid 20848] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20848] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20848] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20848] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20848] exit_group(0)               = ?
[pid 20848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20004", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20004", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20004/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20004/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20004/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20004")                        = 0
mkdir("./20005", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20849
./strace-static-x86_64: Process 20849 attached
[pid 20849] set_robust_list(0x5555589fe660, 24) = 0
[pid 20849] chdir("./20005")            = 0
[pid 20849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20849] setpgid(0, 0)               = 0
[pid 20849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20849] write(3, "1000", 4)         = 4
[pid 20849] close(3)                    = 0
[pid 20849] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20849] write(1, "executing program\n", 18executing program
) = 18
[pid 20849] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20849] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20849] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20849] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20849] exit_group(0)               = ?
[pid 20849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20849, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20005", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20005", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20005/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20005/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20005/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20005")                        = 0
mkdir("./20006", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20850
./strace-static-x86_64: Process 20850 attached
[pid 20850] set_robust_list(0x5555589fe660, 24) = 0
[pid 20850] chdir("./20006")            = 0
[pid 20850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20850] setpgid(0, 0)               = 0
[pid 20850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20850] write(3, "1000", 4)         = 4
[pid 20850] close(3)                    = 0
[pid 20850] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20850] write(1, "executing program\n", 18executing program
) = 18
[pid 20850] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20850] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20850] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20850] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20850] exit_group(0)               = ?
[pid 20850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20006", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20006", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20006/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20006/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20006/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20006")                        = 0
mkdir("./20007", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20851
./strace-static-x86_64: Process 20851 attached
[pid 20851] set_robust_list(0x5555589fe660, 24) = 0
[pid 20851] chdir("./20007")            = 0
[pid 20851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20851] setpgid(0, 0)               = 0
[pid 20851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20851] write(3, "1000", 4)         = 4
[pid 20851] close(3)                    = 0
[pid 20851] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20851] write(1, "executing program\n", 18executing program
) = 18
[pid 20851] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20851] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20851] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20851] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20851] exit_group(0)               = ?
[pid 20851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20851, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20007", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20007", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20007/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20007/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20007/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20007")                        = 0
mkdir("./20008", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20852
./strace-static-x86_64: Process 20852 attached
[pid 20852] set_robust_list(0x5555589fe660, 24) = 0
[pid 20852] chdir("./20008")            = 0
[pid 20852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20852] setpgid(0, 0)               = 0
[pid 20852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20852] write(3, "1000", 4)         = 4
[pid 20852] close(3)                    = 0
[pid 20852] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20852] write(1, "executing program\n", 18executing program
) = 18
[pid 20852] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20852] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20852] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20852] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20852] exit_group(0)               = ?
[pid 20852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20008", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20008", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20008/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20008/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20008/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20008")                        = 0
mkdir("./20009", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20853 attached
 <unfinished ...>
[pid 20853] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20853
[pid 20853] chdir("./20009")            = 0
[pid 20853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20853] setpgid(0, 0)               = 0
[pid 20853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20853] write(3, "1000", 4)         = 4
[pid 20853] close(3)                    = 0
[pid 20853] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20853] write(1, "executing program\n", 18executing program
) = 18
[pid 20853] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20853] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20853] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20853] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20853] exit_group(0)               = ?
[pid 20853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20853, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20009", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20009", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20009/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20009/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20009/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20009")                        = 0
mkdir("./20010", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20854 attached
, child_tidptr=0x5555589fe650) = 20854
[pid 20854] set_robust_list(0x5555589fe660, 24) = 0
[pid 20854] chdir("./20010")            = 0
[pid 20854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20854] setpgid(0, 0)               = 0
[pid 20854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20854] write(3, "1000", 4)         = 4
[pid 20854] close(3)                    = 0
[pid 20854] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20854] write(1, "executing program\n", 18executing program
) = 18
[pid 20854] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20854] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20854] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20854] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20854] exit_group(0)               = ?
[pid 20854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20010", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20010", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20010/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20010/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20010/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20010")                        = 0
mkdir("./20011", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20855
./strace-static-x86_64: Process 20855 attached
[pid 20855] set_robust_list(0x5555589fe660, 24) = 0
[pid 20855] chdir("./20011")            = 0
[pid 20855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20855] setpgid(0, 0)               = 0
[pid 20855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20855] write(3, "1000", 4)         = 4
[pid 20855] close(3)                    = 0
[pid 20855] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20855] write(1, "executing program\n", 18executing program
) = 18
[pid 20855] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20855] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20855] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20855] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20855] exit_group(0)               = ?
[pid 20855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20855, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20011", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20011", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20011/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20011/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20011/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20011")                        = 0
mkdir("./20012", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20856
./strace-static-x86_64: Process 20856 attached
[pid 20856] set_robust_list(0x5555589fe660, 24) = 0
[pid 20856] chdir("./20012")            = 0
[pid 20856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20856] setpgid(0, 0)               = 0
[pid 20856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20856] write(3, "1000", 4)         = 4
[pid 20856] close(3)                    = 0
[pid 20856] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20856] write(1, "executing program\n", 18executing program
) = 18
[pid 20856] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20856] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20856] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20856] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20856] exit_group(0)               = ?
[pid 20856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20012", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20012", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20012/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20012/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20012/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20012")                        = 0
mkdir("./20013", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20857
./strace-static-x86_64: Process 20857 attached
[pid 20857] set_robust_list(0x5555589fe660, 24) = 0
[pid 20857] chdir("./20013")            = 0
[pid 20857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20857] setpgid(0, 0)               = 0
[pid 20857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20857] write(3, "1000", 4)         = 4
[pid 20857] close(3)                    = 0
[pid 20857] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20857] write(1, "executing program\n", 18) = 18
[pid 20857] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20857] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20857] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20857] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20857] exit_group(0)               = ?
[pid 20857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20857, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20013", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20013", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20013/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20013/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20013/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20013")                        = 0
mkdir("./20014", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20858
./strace-static-x86_64: Process 20858 attached
[pid 20858] set_robust_list(0x5555589fe660, 24) = 0
[pid 20858] chdir("./20014")            = 0
[pid 20858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20858] setpgid(0, 0)               = 0
[pid 20858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20858] write(3, "1000", 4)         = 4
[pid 20858] close(3)                    = 0
[pid 20858] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20858] write(1, "executing program\n", 18) = 18
[pid 20858] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20858] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20858] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20858] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20858] exit_group(0)               = ?
[pid 20858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20014", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20014", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20014/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20014/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20014/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20014")                        = 0
mkdir("./20015", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20859
./strace-static-x86_64: Process 20859 attached
[pid 20859] set_robust_list(0x5555589fe660, 24) = 0
[pid 20859] chdir("./20015")            = 0
[pid 20859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20859] setpgid(0, 0)               = 0
[pid 20859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20859] write(3, "1000", 4)         = 4
[pid 20859] close(3)                    = 0
[pid 20859] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20859] write(1, "executing program\n", 18executing program
) = 18
[pid 20859] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20859] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20859] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20859] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20859] exit_group(0)               = ?
[pid 20859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20859, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20015", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20015", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20015/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20015/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20015/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20015")                        = 0
mkdir("./20016", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20860
./strace-static-x86_64: Process 20860 attached
[pid 20860] set_robust_list(0x5555589fe660, 24) = 0
[pid 20860] chdir("./20016")            = 0
[pid 20860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20860] setpgid(0, 0)               = 0
[pid 20860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20860] write(3, "1000", 4)         = 4
[pid 20860] close(3)                    = 0
[pid 20860] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20860] write(1, "executing program\n", 18executing program
) = 18
[pid 20860] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20860] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20860] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20860] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20860] exit_group(0)               = ?
[pid 20860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20016", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20016", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20016/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20016/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20016/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20016")                        = 0
mkdir("./20017", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20861
./strace-static-x86_64: Process 20861 attached
[pid 20861] set_robust_list(0x5555589fe660, 24) = 0
[pid 20861] chdir("./20017")            = 0
[pid 20861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20861] setpgid(0, 0)               = 0
[pid 20861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20861] write(3, "1000", 4)         = 4
[pid 20861] close(3)                    = 0
[pid 20861] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20861] write(1, "executing program\n", 18executing program
) = 18
[pid 20861] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20861] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20861] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20861] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20861] exit_group(0)               = ?
[pid 20861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20861, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20017", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20017", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20017/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20017/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20017/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20017")                        = 0
mkdir("./20018", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20862
./strace-static-x86_64: Process 20862 attached
[pid 20862] set_robust_list(0x5555589fe660, 24) = 0
[pid 20862] chdir("./20018")            = 0
[pid 20862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20862] setpgid(0, 0)               = 0
[pid 20862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20862] write(3, "1000", 4)         = 4
[pid 20862] close(3)                    = 0
[pid 20862] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20862] write(1, "executing program\n", 18) = 18
[pid 20862] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20862] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20862] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20862] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20862] exit_group(0)               = ?
[pid 20862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20018", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20018", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20018/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20018/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20018/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20018")                        = 0
mkdir("./20019", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20863
./strace-static-x86_64: Process 20863 attached
[pid 20863] set_robust_list(0x5555589fe660, 24) = 0
[pid 20863] chdir("./20019")            = 0
[pid 20863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20863] setpgid(0, 0)               = 0
[pid 20863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20863] write(3, "1000", 4)         = 4
[pid 20863] close(3)                    = 0
[pid 20863] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20863] write(1, "executing program\n", 18executing program
) = 18
[pid 20863] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20863] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20863] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20863] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20863] exit_group(0)               = ?
[pid 20863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20863, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20019", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20019", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20019/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20019/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20019/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20019")                        = 0
mkdir("./20020", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20864
./strace-static-x86_64: Process 20864 attached
[pid 20864] set_robust_list(0x5555589fe660, 24) = 0
[pid 20864] chdir("./20020")            = 0
[pid 20864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20864] setpgid(0, 0)               = 0
[pid 20864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20864] write(3, "1000", 4)         = 4
[pid 20864] close(3)                    = 0
[pid 20864] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20864] write(1, "executing program\n", 18executing program
) = 18
[pid 20864] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20864] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20864] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20864] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20864] exit_group(0)               = ?
[pid 20864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20020", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20020", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20020/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20020/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20020/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20020")                        = 0
mkdir("./20021", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20865 attached
, child_tidptr=0x5555589fe650) = 20865
[pid 20865] set_robust_list(0x5555589fe660, 24) = 0
[pid 20865] chdir("./20021")            = 0
[pid 20865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20865] setpgid(0, 0)               = 0
[pid 20865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20865] write(3, "1000", 4)         = 4
[pid 20865] close(3)                    = 0
[pid 20865] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20865] write(1, "executing program\n", 18executing program
) = 18
[pid 20865] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20865] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20865] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20865] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20865] exit_group(0)               = ?
[pid 20865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20865, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20021", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20021", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20021/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20021/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20021/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20021")                        = 0
mkdir("./20022", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20866
./strace-static-x86_64: Process 20866 attached
[pid 20866] set_robust_list(0x5555589fe660, 24) = 0
[pid 20866] chdir("./20022")            = 0
[pid 20866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20866] setpgid(0, 0)               = 0
[pid 20866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20866] write(3, "1000", 4)         = 4
[pid 20866] close(3)                    = 0
[pid 20866] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20866] write(1, "executing program\n", 18) = 18
[pid 20866] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20866] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20866] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20866] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20866] exit_group(0)               = ?
[pid 20866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20022", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20022", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20022/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20022/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20022/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20022")                        = 0
mkdir("./20023", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20867 attached
, child_tidptr=0x5555589fe650) = 20867
[pid 20867] set_robust_list(0x5555589fe660, 24) = 0
[pid 20867] chdir("./20023")            = 0
[pid 20867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20867] setpgid(0, 0)               = 0
[pid 20867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20867] write(3, "1000", 4)         = 4
[pid 20867] close(3)                    = 0
[pid 20867] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20867] write(1, "executing program\n", 18executing program
) = 18
[pid 20867] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20867] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20867] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20867] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20867] exit_group(0)               = ?
[pid 20867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20867, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20023", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20023", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20023/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20023/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20023/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20023")                        = 0
mkdir("./20024", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20868
./strace-static-x86_64: Process 20868 attached
[pid 20868] set_robust_list(0x5555589fe660, 24) = 0
[pid 20868] chdir("./20024")            = 0
[pid 20868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20868] setpgid(0, 0)               = 0
[pid 20868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20868] write(3, "1000", 4)         = 4
[pid 20868] close(3)                    = 0
[pid 20868] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20868] write(1, "executing program\n", 18executing program
) = 18
[pid 20868] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20868] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20868] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20868] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20868] exit_group(0)               = ?
[pid 20868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20024", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20024", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20024/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20024/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20024/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20024")                        = 0
mkdir("./20025", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20869
./strace-static-x86_64: Process 20869 attached
[pid 20869] set_robust_list(0x5555589fe660, 24) = 0
[pid 20869] chdir("./20025")            = 0
[pid 20869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20869] setpgid(0, 0)               = 0
[pid 20869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20869] write(3, "1000", 4)         = 4
[pid 20869] close(3)                    = 0
[pid 20869] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20869] write(1, "executing program\n", 18executing program
) = 18
[pid 20869] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20869] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20869] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20869] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20869] exit_group(0)               = ?
[pid 20869] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20869, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20025", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20025", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20025/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20025/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20025/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20025")                        = 0
mkdir("./20026", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20870
./strace-static-x86_64: Process 20870 attached
[pid 20870] set_robust_list(0x5555589fe660, 24) = 0
[pid 20870] chdir("./20026")            = 0
[pid 20870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20870] setpgid(0, 0)               = 0
[pid 20870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20870] write(3, "1000", 4)         = 4
[pid 20870] close(3)                    = 0
[pid 20870] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20870] write(1, "executing program\n", 18executing program
) = 18
[pid 20870] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20870] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20870] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20870] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20870] exit_group(0)               = ?
[pid 20870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20026", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20026", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20026/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20026/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20026/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20026")                        = 0
mkdir("./20027", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20871
./strace-static-x86_64: Process 20871 attached
[pid 20871] set_robust_list(0x5555589fe660, 24) = 0
[pid 20871] chdir("./20027")            = 0
[pid 20871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20871] setpgid(0, 0)               = 0
[pid 20871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20871] write(3, "1000", 4)         = 4
[pid 20871] close(3)                    = 0
[pid 20871] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20871] write(1, "executing program\n", 18) = 18
[pid 20871] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20871] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20871] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20871] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20871] exit_group(0)               = ?
[pid 20871] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20871, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20027", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20027", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20027/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20027/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20027/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20027")                        = 0
mkdir("./20028", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20872
./strace-static-x86_64: Process 20872 attached
[pid 20872] set_robust_list(0x5555589fe660, 24) = 0
[pid 20872] chdir("./20028")            = 0
[pid 20872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20872] setpgid(0, 0)               = 0
[pid 20872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20872] write(3, "1000", 4)         = 4
[pid 20872] close(3)                    = 0
[pid 20872] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20872] write(1, "executing program\n", 18) = 18
[pid 20872] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20872] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20872] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20872] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20872] exit_group(0)               = ?
[pid 20872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20028", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20028", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20028/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20028/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20028/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20028")                        = 0
mkdir("./20029", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20873
./strace-static-x86_64: Process 20873 attached
[pid 20873] set_robust_list(0x5555589fe660, 24) = 0
[pid 20873] chdir("./20029")            = 0
[pid 20873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20873] setpgid(0, 0)               = 0
[pid 20873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20873] write(3, "1000", 4)         = 4
[pid 20873] close(3)                    = 0
[pid 20873] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20873] write(1, "executing program\n", 18executing program
) = 18
[pid 20873] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20873] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20873] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20873] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20873] exit_group(0)               = ?
[pid 20873] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20873, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20029", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20029", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20029/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20029/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20029/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20029")                        = 0
mkdir("./20030", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20874
./strace-static-x86_64: Process 20874 attached
[pid 20874] set_robust_list(0x5555589fe660, 24) = 0
[pid 20874] chdir("./20030")            = 0
[pid 20874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20874] setpgid(0, 0)               = 0
[pid 20874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20874] write(3, "1000", 4)         = 4
[pid 20874] close(3)                    = 0
[pid 20874] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20874] write(1, "executing program\n", 18executing program
) = 18
[pid 20874] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20874] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20874] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20874] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20874] exit_group(0)               = ?
[pid 20874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20030", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20030", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20030/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20030/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20030/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20030")                        = 0
mkdir("./20031", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20875
./strace-static-x86_64: Process 20875 attached
[pid 20875] set_robust_list(0x5555589fe660, 24) = 0
[pid 20875] chdir("./20031")            = 0
[pid 20875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20875] setpgid(0, 0)               = 0
[pid 20875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20875] write(3, "1000", 4)         = 4
[pid 20875] close(3)                    = 0
[pid 20875] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20875] write(1, "executing program\n", 18executing program
) = 18
[pid 20875] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20875] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20875] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20875] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20875] exit_group(0)               = ?
[pid 20875] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20875, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20031", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20031", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20031/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20031/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20031/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20031")                        = 0
mkdir("./20032", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20876 attached
, child_tidptr=0x5555589fe650) = 20876
[pid 20876] set_robust_list(0x5555589fe660, 24) = 0
[pid 20876] chdir("./20032")            = 0
[pid 20876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20876] setpgid(0, 0)               = 0
[pid 20876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20876] write(3, "1000", 4)         = 4
[pid 20876] close(3)                    = 0
[pid 20876] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20876] write(1, "executing program\n", 18executing program
) = 18
[pid 20876] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20876] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20876] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20876] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20876] exit_group(0)               = ?
[pid 20876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20032", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20032", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20032/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20032/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20032/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20032")                        = 0
mkdir("./20033", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20877
./strace-static-x86_64: Process 20877 attached
[pid 20877] set_robust_list(0x5555589fe660, 24) = 0
[pid 20877] chdir("./20033")            = 0
[pid 20877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20877] setpgid(0, 0)               = 0
[pid 20877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20877] write(3, "1000", 4)         = 4
[pid 20877] close(3)                    = 0
[pid 20877] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20877] write(1, "executing program\n", 18) = 18
[pid 20877] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20877] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20877] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20877] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20877] exit_group(0)               = ?
[pid 20877] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20877, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20033", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20033", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20033/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20033/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20033/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20033")                        = 0
mkdir("./20034", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20878
./strace-static-x86_64: Process 20878 attached
[pid 20878] set_robust_list(0x5555589fe660, 24) = 0
[pid 20878] chdir("./20034")            = 0
[pid 20878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20878] setpgid(0, 0)               = 0
[pid 20878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20878] write(3, "1000", 4)         = 4
[pid 20878] close(3)                    = 0
executing program
[pid 20878] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20878] write(1, "executing program\n", 18) = 18
[pid 20878] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20878] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20878] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20878] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20878] exit_group(0)               = ?
[pid 20878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20034", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20034", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20034/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20034/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20034/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20034")                        = 0
mkdir("./20035", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20879 attached
, child_tidptr=0x5555589fe650) = 20879
[pid 20879] set_robust_list(0x5555589fe660, 24) = 0
[pid 20879] chdir("./20035")            = 0
[pid 20879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20879] setpgid(0, 0)               = 0
[pid 20879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20879] write(3, "1000", 4)         = 4
[pid 20879] close(3)                    = 0
[pid 20879] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20879] write(1, "executing program\n", 18executing program
) = 18
[pid 20879] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20879] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20879] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20879] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20879] exit_group(0)               = ?
[pid 20879] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20879, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20035", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20035", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20035/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20035/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20035/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20035")                        = 0
mkdir("./20036", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20880 attached
, child_tidptr=0x5555589fe650) = 20880
[pid 20880] set_robust_list(0x5555589fe660, 24) = 0
[pid 20880] chdir("./20036")            = 0
[pid 20880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20880] setpgid(0, 0)               = 0
[pid 20880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20880] write(3, "1000", 4)         = 4
[pid 20880] close(3)                    = 0
[pid 20880] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20880] write(1, "executing program\n", 18executing program
) = 18
[pid 20880] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20880] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20880] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20880] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20880] exit_group(0)               = ?
[pid 20880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20036", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20036", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20036/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20036/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20036/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20036")                        = 0
mkdir("./20037", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20881 attached
, child_tidptr=0x5555589fe650) = 20881
[pid 20881] set_robust_list(0x5555589fe660, 24) = 0
[pid 20881] chdir("./20037")            = 0
[pid 20881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20881] setpgid(0, 0)               = 0
[pid 20881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20881] write(3, "1000", 4)         = 4
[pid 20881] close(3)                    = 0
[pid 20881] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20881] write(1, "executing program\n", 18executing program
) = 18
[pid 20881] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20881] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20881] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20881] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20881] exit_group(0)               = ?
[pid 20881] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20881, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20037", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20037", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20037/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20037/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20037/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20037")                        = 0
mkdir("./20038", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20882
./strace-static-x86_64: Process 20882 attached
[pid 20882] set_robust_list(0x5555589fe660, 24) = 0
[pid 20882] chdir("./20038")            = 0
[pid 20882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20882] setpgid(0, 0)               = 0
[pid 20882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20882] write(3, "1000", 4)         = 4
[pid 20882] close(3)                    = 0
[pid 20882] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20882] write(1, "executing program\n", 18executing program
) = 18
[pid 20882] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20882] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20882] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20882] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20882] exit_group(0)               = ?
[pid 20882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20038", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20038", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20038/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20038/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20038/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20038")                        = 0
mkdir("./20039", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20883
./strace-static-x86_64: Process 20883 attached
[pid 20883] set_robust_list(0x5555589fe660, 24) = 0
[pid 20883] chdir("./20039")            = 0
[pid 20883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20883] setpgid(0, 0)               = 0
[pid 20883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20883] write(3, "1000", 4)         = 4
[pid 20883] close(3)                    = 0
[pid 20883] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20883] write(1, "executing program\n", 18) = 18
[pid 20883] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20883] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20883] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20883] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20883] exit_group(0)               = ?
[pid 20883] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20883, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20039", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20039", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20039/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20039/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20039/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20039")                        = 0
mkdir("./20040", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20884
./strace-static-x86_64: Process 20884 attached
[pid 20884] set_robust_list(0x5555589fe660, 24) = 0
[pid 20884] chdir("./20040")            = 0
[pid 20884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20884] setpgid(0, 0)               = 0
[pid 20884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20884] write(3, "1000", 4)         = 4
[pid 20884] close(3)                    = 0
[pid 20884] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20884] write(1, "executing program\n", 18) = 18
[pid 20884] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20884] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20884] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20884] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20884] exit_group(0)               = ?
[pid 20884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20040", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20040", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20040/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20040/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20040/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20040")                        = 0
mkdir("./20041", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20885
./strace-static-x86_64: Process 20885 attached
[pid 20885] set_robust_list(0x5555589fe660, 24) = 0
[pid 20885] chdir("./20041")            = 0
[pid 20885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20885] setpgid(0, 0)               = 0
[pid 20885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20885] write(3, "1000", 4)         = 4
[pid 20885] close(3)                    = 0
[pid 20885] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20885] write(1, "executing program\n", 18executing program
) = 18
[pid 20885] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20885] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20885] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20885] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20885] exit_group(0)               = ?
[pid 20885] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20885, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20041", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20041", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20041/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20041/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20041/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20041")                        = 0
mkdir("./20042", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20886
./strace-static-x86_64: Process 20886 attached
[pid 20886] set_robust_list(0x5555589fe660, 24) = 0
[pid 20886] chdir("./20042")            = 0
[pid 20886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20886] setpgid(0, 0)               = 0
[pid 20886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20886] write(3, "1000", 4)         = 4
[pid 20886] close(3)                    = 0
[pid 20886] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20886] write(1, "executing program\n", 18) = 18
[pid 20886] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20886] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20886] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20886] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20886] exit_group(0)               = ?
[pid 20886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20042", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20042", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20042/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20042/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20042/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20042")                        = 0
mkdir("./20043", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20887 attached
 <unfinished ...>
[pid 20887] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20887
[pid 20887] chdir("./20043")            = 0
[pid 20887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20887] setpgid(0, 0)               = 0
[pid 20887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20887] write(3, "1000", 4)         = 4
[pid 20887] close(3)                    = 0
[pid 20887] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20887] write(1, "executing program\n", 18executing program
) = 18
[pid 20887] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20887] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20887] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20887] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20887] exit_group(0)               = ?
[pid 20887] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20887, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20043", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20043", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20043/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20043/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20043/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20043")                        = 0
mkdir("./20044", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20888 attached
 <unfinished ...>
[pid 20888] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20888
[pid 20888] chdir("./20044")            = 0
[pid 20888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20888] setpgid(0, 0)               = 0
[pid 20888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20888] write(3, "1000", 4)         = 4
[pid 20888] close(3)                    = 0
[pid 20888] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20888] write(1, "executing program\n", 18) = 18
[pid 20888] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20888] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20888] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20888] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20888] exit_group(0)               = ?
[pid 20888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20044", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20044", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20044/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20044/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20044/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20044")                        = 0
mkdir("./20045", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20889
./strace-static-x86_64: Process 20889 attached
[pid 20889] set_robust_list(0x5555589fe660, 24) = 0
[pid 20889] chdir("./20045")            = 0
[pid 20889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20889] setpgid(0, 0)               = 0
[pid 20889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20889] write(3, "1000", 4)         = 4
[pid 20889] close(3)                    = 0
[pid 20889] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20889] write(1, "executing program\n", 18executing program
) = 18
[pid 20889] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20889] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20889] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20889] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20889] exit_group(0)               = ?
[pid 20889] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20889, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20045", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20045", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20045/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20045/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20045/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20045")                        = 0
mkdir("./20046", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20890
./strace-static-x86_64: Process 20890 attached
[pid 20890] set_robust_list(0x5555589fe660, 24) = 0
[pid 20890] chdir("./20046")            = 0
[pid 20890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20890] setpgid(0, 0)               = 0
[pid 20890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20890] write(3, "1000", 4)         = 4
[pid 20890] close(3)                    = 0
[pid 20890] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20890] write(1, "executing program\n", 18) = 18
[pid 20890] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20890] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20890] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20890] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20890] exit_group(0)               = ?
[pid 20890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20046", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20046", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20046/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20046/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20046/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20046")                        = 0
mkdir("./20047", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20891
./strace-static-x86_64: Process 20891 attached
[pid 20891] set_robust_list(0x5555589fe660, 24) = 0
[pid 20891] chdir("./20047")            = 0
[pid 20891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20891] setpgid(0, 0)               = 0
[pid 20891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20891] write(3, "1000", 4)         = 4
[pid 20891] close(3)                    = 0
[pid 20891] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20891] write(1, "executing program\n", 18executing program
) = 18
[pid 20891] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20891] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20891] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20891] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20891] exit_group(0)               = ?
[pid 20891] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20891, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20047", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20047", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20047/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20047/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20047/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20047")                        = 0
mkdir("./20048", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20892
./strace-static-x86_64: Process 20892 attached
[pid 20892] set_robust_list(0x5555589fe660, 24) = 0
[pid 20892] chdir("./20048")            = 0
[pid 20892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20892] setpgid(0, 0)               = 0
[pid 20892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20892] write(3, "1000", 4)         = 4
[pid 20892] close(3)                    = 0
[pid 20892] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20892] write(1, "executing program\n", 18executing program
) = 18
[pid 20892] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20892] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20892] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20892] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20892] exit_group(0)               = ?
[pid 20892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20048", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20048", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20048/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20048/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20048/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20048")                        = 0
mkdir("./20049", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20893
./strace-static-x86_64: Process 20893 attached
[pid 20893] set_robust_list(0x5555589fe660, 24) = 0
[pid 20893] chdir("./20049")            = 0
[pid 20893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20893] setpgid(0, 0)               = 0
[pid 20893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20893] write(3, "1000", 4)         = 4
[pid 20893] close(3)                    = 0
[pid 20893] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20893] write(1, "executing program\n", 18executing program
) = 18
[pid 20893] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20893] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20893] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20893] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20893] exit_group(0)               = ?
[pid 20893] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20893, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20049", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20049", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20049/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20049/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20049/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20049")                        = 0
mkdir("./20050", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20894
./strace-static-x86_64: Process 20894 attached
[pid 20894] set_robust_list(0x5555589fe660, 24) = 0
[pid 20894] chdir("./20050")            = 0
[pid 20894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20894] setpgid(0, 0)               = 0
[pid 20894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20894] write(3, "1000", 4)         = 4
[pid 20894] close(3)                    = 0
[pid 20894] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20894] write(1, "executing program\n", 18) = 18
[pid 20894] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20894] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20894] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20894] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20894] exit_group(0)               = ?
[pid 20894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20050", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20050", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20050/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20050/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20050/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20050")                        = 0
mkdir("./20051", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20895
./strace-static-x86_64: Process 20895 attached
[pid 20895] set_robust_list(0x5555589fe660, 24) = 0
[pid 20895] chdir("./20051")            = 0
[pid 20895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20895] setpgid(0, 0)               = 0
[pid 20895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20895] write(3, "1000", 4)         = 4
[pid 20895] close(3)                    = 0
[pid 20895] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20895] write(1, "executing program\n", 18executing program
) = 18
[pid 20895] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20895] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20895] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20895] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20895] exit_group(0)               = ?
[pid 20895] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20895, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20051", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20051", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20051/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20051/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20051/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20051")                        = 0
mkdir("./20052", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20896
./strace-static-x86_64: Process 20896 attached
[pid 20896] set_robust_list(0x5555589fe660, 24) = 0
[pid 20896] chdir("./20052")            = 0
[pid 20896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20896] setpgid(0, 0)               = 0
[pid 20896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20896] write(3, "1000", 4)         = 4
[pid 20896] close(3)                    = 0
[pid 20896] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20896] write(1, "executing program\n", 18executing program
) = 18
[pid 20896] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20896] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20896] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20896] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20896] exit_group(0)               = ?
[pid 20896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20052", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20052", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20052/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20052/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20052/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20052")                        = 0
mkdir("./20053", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20897
./strace-static-x86_64: Process 20897 attached
[pid 20897] set_robust_list(0x5555589fe660, 24) = 0
[pid 20897] chdir("./20053")            = 0
[pid 20897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20897] setpgid(0, 0)               = 0
[pid 20897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20897] write(3, "1000", 4)         = 4
[pid 20897] close(3)                    = 0
[pid 20897] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20897] write(1, "executing program\n", 18executing program
) = 18
[pid 20897] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20897] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20897] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20897] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20897] exit_group(0)               = ?
[pid 20897] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20897, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20053", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20053", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20053/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20053/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20053/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20053")                        = 0
mkdir("./20054", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20898
./strace-static-x86_64: Process 20898 attached
[pid 20898] set_robust_list(0x5555589fe660, 24) = 0
[pid 20898] chdir("./20054")            = 0
[pid 20898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20898] setpgid(0, 0)               = 0
[pid 20898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20898] write(3, "1000", 4)         = 4
[pid 20898] close(3)                    = 0
[pid 20898] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20898] write(1, "executing program\n", 18executing program
) = 18
[pid 20898] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20898] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20898] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20898] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20898] exit_group(0)               = ?
[pid 20898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20054", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20054", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20054/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20054/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20054/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20054")                        = 0
mkdir("./20055", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20899
./strace-static-x86_64: Process 20899 attached
[pid 20899] set_robust_list(0x5555589fe660, 24) = 0
[pid 20899] chdir("./20055")            = 0
[pid 20899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20899] setpgid(0, 0)               = 0
[pid 20899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20899] write(3, "1000", 4)         = 4
[pid 20899] close(3)                    = 0
[pid 20899] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20899] write(1, "executing program\n", 18executing program
) = 18
[pid 20899] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20899] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20899] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20899] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20899] exit_group(0)               = ?
[pid 20899] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20899, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20055", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20055", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20055/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20055/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20055/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20055")                        = 0
mkdir("./20056", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20900
./strace-static-x86_64: Process 20900 attached
[pid 20900] set_robust_list(0x5555589fe660, 24) = 0
[pid 20900] chdir("./20056")            = 0
[pid 20900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20900] setpgid(0, 0)               = 0
[pid 20900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20900] write(3, "1000", 4)         = 4
[pid 20900] close(3)                    = 0
[pid 20900] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20900] write(1, "executing program\n", 18executing program
) = 18
[pid 20900] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20900] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20900] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20900] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20900] exit_group(0)               = ?
[pid 20900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20056", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20056", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20056/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20056/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20056/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20056")                        = 0
mkdir("./20057", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20901
./strace-static-x86_64: Process 20901 attached
[pid 20901] set_robust_list(0x5555589fe660, 24) = 0
[pid 20901] chdir("./20057")            = 0
[pid 20901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20901] setpgid(0, 0)               = 0
[pid 20901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20901] write(3, "1000", 4)         = 4
[pid 20901] close(3)                    = 0
[pid 20901] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20901] write(1, "executing program\n", 18executing program
) = 18
[pid 20901] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20901] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20901] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20901] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20901] exit_group(0)               = ?
[pid 20901] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20901, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20057", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20057", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20057/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20057/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20057/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20057")                        = 0
mkdir("./20058", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20902
./strace-static-x86_64: Process 20902 attached
[pid 20902] set_robust_list(0x5555589fe660, 24) = 0
[pid 20902] chdir("./20058")            = 0
[pid 20902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20902] setpgid(0, 0)               = 0
[pid 20902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20902] write(3, "1000", 4)         = 4
[pid 20902] close(3)                    = 0
[pid 20902] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20902] write(1, "executing program\n", 18executing program
) = 18
[pid 20902] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20902] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20902] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20902] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20902] exit_group(0)               = ?
[pid 20902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20058", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20058", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20058/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20058/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20058/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20058")                        = 0
mkdir("./20059", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20903
./strace-static-x86_64: Process 20903 attached
[pid 20903] set_robust_list(0x5555589fe660, 24) = 0
[pid 20903] chdir("./20059")            = 0
[pid 20903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20903] setpgid(0, 0)               = 0
[pid 20903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20903] write(3, "1000", 4)         = 4
[pid 20903] close(3)                    = 0
[pid 20903] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20903] write(1, "executing program\n", 18executing program
) = 18
[pid 20903] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20903] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20903] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20903] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20903] exit_group(0)               = ?
[pid 20903] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20903, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20059", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20059", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20059/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20059/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20059/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20059")                        = 0
mkdir("./20060", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20904
./strace-static-x86_64: Process 20904 attached
[pid 20904] set_robust_list(0x5555589fe660, 24) = 0
[pid 20904] chdir("./20060")            = 0
[pid 20904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20904] setpgid(0, 0)               = 0
[pid 20904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20904] write(3, "1000", 4)         = 4
[pid 20904] close(3)                    = 0
[pid 20904] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20904] write(1, "executing program\n", 18) = 18
[pid 20904] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20904] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20904] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20904] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20904] exit_group(0)               = ?
[pid 20904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20060", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20060", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20060/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20060/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20060/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20060")                        = 0
mkdir("./20061", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20905
./strace-static-x86_64: Process 20905 attached
[pid 20905] set_robust_list(0x5555589fe660, 24) = 0
[pid 20905] chdir("./20061")            = 0
[pid 20905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20905] setpgid(0, 0)               = 0
[pid 20905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20905] write(3, "1000", 4)         = 4
[pid 20905] close(3)                    = 0
[pid 20905] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20905] write(1, "executing program\n", 18) = 18
[pid 20905] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20905] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20905] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20905] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20905] exit_group(0)               = ?
[pid 20905] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20905, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20061", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20061", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20061/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20061/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20061/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20061")                        = 0
mkdir("./20062", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20907
./strace-static-x86_64: Process 20907 attached
[pid 20907] set_robust_list(0x5555589fe660, 24) = 0
[pid 20907] chdir("./20062")            = 0
[pid 20907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20907] setpgid(0, 0)               = 0
[pid 20907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20907] write(3, "1000", 4)         = 4
[pid 20907] close(3)                    = 0
[pid 20907] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20907] write(1, "executing program\n", 18) = 18
[pid 20907] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20907] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20907] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20907] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20907] exit_group(0)               = ?
[pid 20907] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20907, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20062", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20062", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20062/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20062/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20062/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20062")                        = 0
mkdir("./20063", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20908
./strace-static-x86_64: Process 20908 attached
[pid 20908] set_robust_list(0x5555589fe660, 24) = 0
[pid 20908] chdir("./20063")            = 0
[pid 20908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20908] setpgid(0, 0)               = 0
[pid 20908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20908] write(3, "1000", 4)         = 4
[pid 20908] close(3)                    = 0
[pid 20908] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20908] write(1, "executing program\n", 18) = 18
[pid 20908] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20908] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20908] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20908] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20908] exit_group(0)               = ?
[pid 20908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20908, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20063", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20063", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20063/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20063/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20063/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20063")                        = 0
mkdir("./20064", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20909
./strace-static-x86_64: Process 20909 attached
[pid 20909] set_robust_list(0x5555589fe660, 24) = 0
[pid 20909] chdir("./20064")            = 0
[pid 20909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20909] setpgid(0, 0)               = 0
[pid 20909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20909] write(3, "1000", 4)         = 4
[pid 20909] close(3)                    = 0
[pid 20909] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20909] write(1, "executing program\n", 18executing program
) = 18
[pid 20909] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20909] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20909] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20909] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20909] exit_group(0)               = ?
[pid 20909] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20909, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20064", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20064", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20064/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20064/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20064/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20064")                        = 0
mkdir("./20065", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20910
./strace-static-x86_64: Process 20910 attached
[pid 20910] set_robust_list(0x5555589fe660, 24) = 0
[pid 20910] chdir("./20065")            = 0
[pid 20910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20910] setpgid(0, 0)               = 0
[pid 20910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20910] write(3, "1000", 4)         = 4
[pid 20910] close(3)                    = 0
[pid 20910] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20910] write(1, "executing program\n", 18) = 18
[pid 20910] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20910] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20910] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20910] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20910] exit_group(0)               = ?
[pid 20910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20065", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20065", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20065/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20065/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20065/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20065")                        = 0
mkdir("./20066", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20911
./strace-static-x86_64: Process 20911 attached
[pid 20911] set_robust_list(0x5555589fe660, 24) = 0
[pid 20911] chdir("./20066")            = 0
[pid 20911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20911] setpgid(0, 0)               = 0
[pid 20911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20911] write(3, "1000", 4)         = 4
[pid 20911] close(3)                    = 0
[pid 20911] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20911] write(1, "executing program\n", 18) = 18
[pid 20911] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20911] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20911] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20911] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20911] exit_group(0)               = ?
[pid 20911] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20911, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20066", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20066", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20066/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20066/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20066/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20066")                        = 0
mkdir("./20067", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20912 attached
, child_tidptr=0x5555589fe650) = 20912
[pid 20912] set_robust_list(0x5555589fe660, 24) = 0
[pid 20912] chdir("./20067")            = 0
[pid 20912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20912] setpgid(0, 0)               = 0
[pid 20912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20912] write(3, "1000", 4)         = 4
[pid 20912] close(3)                    = 0
[pid 20912] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20912] write(1, "executing program\n", 18executing program
) = 18
[pid 20912] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20912] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20912] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20912] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20912] exit_group(0)               = ?
[pid 20912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20067", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20067", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20067/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20067/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20067/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20067")                        = 0
mkdir("./20068", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20913
./strace-static-x86_64: Process 20913 attached
[pid 20913] set_robust_list(0x5555589fe660, 24) = 0
[pid 20913] chdir("./20068")            = 0
[pid 20913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20913] setpgid(0, 0)               = 0
[pid 20913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20913] write(3, "1000", 4)         = 4
[pid 20913] close(3)                    = 0
[pid 20913] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20913] write(1, "executing program\n", 18) = 18
[pid 20913] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20913] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20913] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20913] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20913] exit_group(0)               = ?
[pid 20913] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20913, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20068", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20068", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20068/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20068/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20068/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20068")                        = 0
mkdir("./20069", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20914
./strace-static-x86_64: Process 20914 attached
[pid 20914] set_robust_list(0x5555589fe660, 24) = 0
[pid 20914] chdir("./20069")            = 0
[pid 20914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20914] setpgid(0, 0)               = 0
[pid 20914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20914] write(3, "1000", 4)         = 4
[pid 20914] close(3)                    = 0
[pid 20914] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20914] write(1, "executing program\n", 18executing program
) = 18
[pid 20914] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20914] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20914] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20914] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20914] exit_group(0)               = ?
[pid 20914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20069", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20069", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20069/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20069/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20069/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20069")                        = 0
mkdir("./20070", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20915
./strace-static-x86_64: Process 20915 attached
[pid 20915] set_robust_list(0x5555589fe660, 24) = 0
[pid 20915] chdir("./20070")            = 0
[pid 20915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20915] setpgid(0, 0)               = 0
[pid 20915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20915] write(3, "1000", 4)         = 4
[pid 20915] close(3)                    = 0
[pid 20915] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20915] write(1, "executing program\n", 18executing program
) = 18
[pid 20915] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20915] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20915] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20915] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20915] exit_group(0)               = ?
[pid 20915] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20915, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20070", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20070", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20070/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20070/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20070/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20070")                        = 0
mkdir("./20071", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20916
./strace-static-x86_64: Process 20916 attached
[pid 20916] set_robust_list(0x5555589fe660, 24) = 0
[pid 20916] chdir("./20071")            = 0
[pid 20916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20916] setpgid(0, 0)               = 0
[pid 20916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20916] write(3, "1000", 4)         = 4
[pid 20916] close(3)                    = 0
[pid 20916] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20916] write(1, "executing program\n", 18executing program
) = 18
[pid 20916] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20916] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20916] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20916] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20916] exit_group(0)               = ?
[pid 20916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20071", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20071", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20071/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20071/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20071/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20071")                        = 0
mkdir("./20072", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20917
./strace-static-x86_64: Process 20917 attached
[pid 20917] set_robust_list(0x5555589fe660, 24) = 0
[pid 20917] chdir("./20072")            = 0
[pid 20917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20917] setpgid(0, 0)               = 0
[pid 20917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20917] write(3, "1000", 4)         = 4
[pid 20917] close(3)                    = 0
[pid 20917] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20917] write(1, "executing program\n", 18executing program
) = 18
[pid 20917] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20917] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20917] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20917] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20917] exit_group(0)               = ?
[pid 20917] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20917, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20072", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20072", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20072/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20072/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20072/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20072")                        = 0
mkdir("./20073", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20918 attached
 <unfinished ...>
[pid 20918] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20918
[pid 20918] chdir("./20073")            = 0
[pid 20918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20918] setpgid(0, 0)               = 0
[pid 20918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20918] write(3, "1000", 4)         = 4
[pid 20918] close(3)                    = 0
[pid 20918] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20918] write(1, "executing program\n", 18executing program
) = 18
[pid 20918] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20918] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20918] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20918] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20918] exit_group(0)               = ?
[pid 20918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20073", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20073", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20073/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20073/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20073/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20073")                        = 0
mkdir("./20074", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20919
./strace-static-x86_64: Process 20919 attached
[pid 20919] set_robust_list(0x5555589fe660, 24) = 0
[pid 20919] chdir("./20074")            = 0
[pid 20919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20919] setpgid(0, 0)               = 0
[pid 20919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20919] write(3, "1000", 4)         = 4
[pid 20919] close(3)                    = 0
[pid 20919] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20919] write(1, "executing program\n", 18executing program
) = 18
[pid 20919] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20919] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20919] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20919] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20919] exit_group(0)               = ?
[pid 20919] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20919, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20074", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20074", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20074/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20074/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20074/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20074")                        = 0
mkdir("./20075", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20920
./strace-static-x86_64: Process 20920 attached
[pid 20920] set_robust_list(0x5555589fe660, 24) = 0
[pid 20920] chdir("./20075")            = 0
[pid 20920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20920] setpgid(0, 0)               = 0
[pid 20920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20920] write(3, "1000", 4)         = 4
[pid 20920] close(3)                    = 0
[pid 20920] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20920] write(1, "executing program\n", 18executing program
) = 18
[pid 20920] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20920] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20920] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20920] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20920] exit_group(0)               = ?
[pid 20920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20075", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20075", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20075/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20075/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20075/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20075")                        = 0
mkdir("./20076", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20921
./strace-static-x86_64: Process 20921 attached
[pid 20921] set_robust_list(0x5555589fe660, 24) = 0
[pid 20921] chdir("./20076")            = 0
[pid 20921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20921] setpgid(0, 0)               = 0
[pid 20921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20921] write(3, "1000", 4)         = 4
[pid 20921] close(3)                    = 0
[pid 20921] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20921] write(1, "executing program\n", 18executing program
) = 18
[pid 20921] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20921] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20921] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20921] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20921] exit_group(0)               = ?
[pid 20921] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20921, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20076", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20076", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20076/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20076/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20076/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20076")                        = 0
mkdir("./20077", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20922
./strace-static-x86_64: Process 20922 attached
[pid 20922] set_robust_list(0x5555589fe660, 24) = 0
[pid 20922] chdir("./20077")            = 0
[pid 20922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20922] setpgid(0, 0)               = 0
[pid 20922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20922] write(3, "1000", 4)         = 4
[pid 20922] close(3)                    = 0
[pid 20922] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20922] write(1, "executing program\n", 18) = 18
[pid 20922] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20922] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20922] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20922] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20922] exit_group(0)               = ?
[pid 20922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20077", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20077", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20077/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20077/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20077/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20077")                        = 0
mkdir("./20078", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20923
./strace-static-x86_64: Process 20923 attached
[pid 20923] set_robust_list(0x5555589fe660, 24) = 0
[pid 20923] chdir("./20078")            = 0
[pid 20923] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20923] setpgid(0, 0)               = 0
[pid 20923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20923] write(3, "1000", 4)         = 4
[pid 20923] close(3)                    = 0
[pid 20923] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20923] write(1, "executing program\n", 18) = 18
[pid 20923] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20923] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20923] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20923] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20923] exit_group(0)               = ?
[pid 20923] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20923, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20078", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20078", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20078/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20078/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20078/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20078")                        = 0
mkdir("./20079", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20924
./strace-static-x86_64: Process 20924 attached
[pid 20924] set_robust_list(0x5555589fe660, 24) = 0
[pid 20924] chdir("./20079")            = 0
[pid 20924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20924] setpgid(0, 0)               = 0
[pid 20924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20924] write(3, "1000", 4)         = 4
[pid 20924] close(3)                    = 0
[pid 20924] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20924] write(1, "executing program\n", 18executing program
) = 18
[pid 20924] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20924] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20924] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20924] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20924] exit_group(0)               = ?
[pid 20924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20079", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20079", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20079/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20079/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20079/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20079")                        = 0
mkdir("./20080", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20925
./strace-static-x86_64: Process 20925 attached
[pid 20925] set_robust_list(0x5555589fe660, 24) = 0
[pid 20925] chdir("./20080")            = 0
[pid 20925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20925] setpgid(0, 0)               = 0
[pid 20925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20925] write(3, "1000", 4)         = 4
[pid 20925] close(3)                    = 0
[pid 20925] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20925] write(1, "executing program\n", 18executing program
) = 18
[pid 20925] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20925] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20925] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20925] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20925] exit_group(0)               = ?
[pid 20925] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20925, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20080", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20080", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20080/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20080/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20080/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20080")                        = 0
mkdir("./20081", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20926
./strace-static-x86_64: Process 20926 attached
[pid 20926] set_robust_list(0x5555589fe660, 24) = 0
[pid 20926] chdir("./20081")            = 0
[pid 20926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20926] setpgid(0, 0)               = 0
[pid 20926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20926] write(3, "1000", 4)         = 4
[pid 20926] close(3)                    = 0
[pid 20926] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20926] write(1, "executing program\n", 18) = 18
[pid 20926] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20926] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20926] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20926] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20926] exit_group(0)               = ?
[pid 20926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20081", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20081", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20081/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20081/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20081/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20081")                        = 0
mkdir("./20082", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20927
./strace-static-x86_64: Process 20927 attached
[pid 20927] set_robust_list(0x5555589fe660, 24) = 0
[pid 20927] chdir("./20082")            = 0
[pid 20927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20927] setpgid(0, 0)               = 0
[pid 20927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20927] write(3, "1000", 4)         = 4
[pid 20927] close(3)                    = 0
[pid 20927] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20927] write(1, "executing program\n", 18executing program
) = 18
[pid 20927] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20927] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20927] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20927] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20927] exit_group(0)               = ?
[pid 20927] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20927, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20082", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20082", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20082/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20082/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20082/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20082")                        = 0
mkdir("./20083", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20928
./strace-static-x86_64: Process 20928 attached
[pid 20928] set_robust_list(0x5555589fe660, 24) = 0
[pid 20928] chdir("./20083")            = 0
[pid 20928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20928] setpgid(0, 0)               = 0
[pid 20928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20928] write(3, "1000", 4)         = 4
[pid 20928] close(3)                    = 0
[pid 20928] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20928] write(1, "executing program\n", 18executing program
) = 18
[pid 20928] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20928] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20928] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20928] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20928] exit_group(0)               = ?
[pid 20928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20083", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20083", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20083/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20083/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20083/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20083")                        = 0
mkdir("./20084", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20929
./strace-static-x86_64: Process 20929 attached
[pid 20929] set_robust_list(0x5555589fe660, 24) = 0
[pid 20929] chdir("./20084")            = 0
[pid 20929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20929] setpgid(0, 0)               = 0
[pid 20929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20929] write(3, "1000", 4)         = 4
[pid 20929] close(3)                    = 0
[pid 20929] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20929] write(1, "executing program\n", 18executing program
) = 18
[pid 20929] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20929] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20929] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20929] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20929] exit_group(0)               = ?
[pid 20929] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20929, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20084", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20084", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20084/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20084/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20084/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20084")                        = 0
mkdir("./20085", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20930 attached
 <unfinished ...>
[pid 20930] set_robust_list(0x5555589fe660, 24) = 0
[pid 20930] chdir("./20085")            = 0
[pid 20930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20930] setpgid(0, 0)               = 0
[pid 20930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20930
[pid 20930] <... openat resumed>)       = 3
[pid 20930] write(3, "1000", 4)         = 4
[pid 20930] close(3)                    = 0
[pid 20930] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20930] write(1, "executing program\n", 18executing program
) = 18
[pid 20930] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20930] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20930] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20930] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20930] exit_group(0)               = ?
[pid 20930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20085", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20085", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20085/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20085/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20085/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20085")                        = 0
mkdir("./20086", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20931
./strace-static-x86_64: Process 20931 attached
[pid 20931] set_robust_list(0x5555589fe660, 24) = 0
[pid 20931] chdir("./20086")            = 0
[pid 20931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20931] setpgid(0, 0)               = 0
[pid 20931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20931] write(3, "1000", 4)         = 4
[pid 20931] close(3)                    = 0
[pid 20931] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20931] write(1, "executing program\n", 18) = 18
[pid 20931] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20931] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20931] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20931] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20931] exit_group(0)               = ?
[pid 20931] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20931, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20086", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20086", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20086/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20086/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20086/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20086")                        = 0
mkdir("./20087", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20932
./strace-static-x86_64: Process 20932 attached
[pid 20932] set_robust_list(0x5555589fe660, 24) = 0
[pid 20932] chdir("./20087")            = 0
[pid 20932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20932] setpgid(0, 0)               = 0
[pid 20932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20932] write(3, "1000", 4)         = 4
[pid 20932] close(3)                    = 0
[pid 20932] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20932] write(1, "executing program\n", 18executing program
) = 18
[pid 20932] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20932] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20932] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20932] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20932] exit_group(0)               = ?
[pid 20932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20087", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20087", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20087/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20087/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20087/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20087")                        = 0
mkdir("./20088", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20933
./strace-static-x86_64: Process 20933 attached
[pid 20933] set_robust_list(0x5555589fe660, 24) = 0
[pid 20933] chdir("./20088")            = 0
[pid 20933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20933] setpgid(0, 0)               = 0
[pid 20933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20933] write(3, "1000", 4)         = 4
[pid 20933] close(3)                    = 0
[pid 20933] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20933] write(1, "executing program\n", 18) = 18
[pid 20933] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20933] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20933] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20933] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20933] exit_group(0)               = ?
[pid 20933] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20933, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20088", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20088", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20088/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20088/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20088/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20088")                        = 0
mkdir("./20089", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20934
./strace-static-x86_64: Process 20934 attached
[pid 20934] set_robust_list(0x5555589fe660, 24) = 0
[pid 20934] chdir("./20089")            = 0
[pid 20934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20934] setpgid(0, 0)               = 0
[pid 20934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20934] write(3, "1000", 4)         = 4
[pid 20934] close(3)                    = 0
[pid 20934] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20934] write(1, "executing program\n", 18executing program
) = 18
[pid 20934] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20934] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20934] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20934] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20934] exit_group(0)               = ?
[pid 20934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20089", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20089", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20089/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20089/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20089/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20089")                        = 0
mkdir("./20090", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20935 attached
, child_tidptr=0x5555589fe650) = 20935
[pid 20935] set_robust_list(0x5555589fe660, 24) = 0
[pid 20935] chdir("./20090")            = 0
[pid 20935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20935] setpgid(0, 0)               = 0
[pid 20935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20935] write(3, "1000", 4)         = 4
[pid 20935] close(3)                    = 0
[pid 20935] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20935] write(1, "executing program\n", 18executing program
) = 18
[pid 20935] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20935] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20935] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20935] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20935] exit_group(0)               = ?
[pid 20935] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20935, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20090", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20090", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20090/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20090/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20090/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20090")                        = 0
mkdir("./20091", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20936
./strace-static-x86_64: Process 20936 attached
[pid 20936] set_robust_list(0x5555589fe660, 24) = 0
[pid 20936] chdir("./20091")            = 0
[pid 20936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20936] setpgid(0, 0)               = 0
[pid 20936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20936] write(3, "1000", 4)         = 4
[pid 20936] close(3)                    = 0
[pid 20936] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20936] write(1, "executing program\n", 18executing program
) = 18
[pid 20936] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20936] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20936] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20936] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20936] exit_group(0)               = ?
[pid 20936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20091", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20091", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20091/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20091/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20091/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20091")                        = 0
mkdir("./20092", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20937
./strace-static-x86_64: Process 20937 attached
[pid 20937] set_robust_list(0x5555589fe660, 24) = 0
[pid 20937] chdir("./20092")            = 0
[pid 20937] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20937] setpgid(0, 0)               = 0
[pid 20937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20937] write(3, "1000", 4)         = 4
[pid 20937] close(3)                    = 0
[pid 20937] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20937] write(1, "executing program\n", 18executing program
) = 18
[pid 20937] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20937] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20937] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20937] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20937] exit_group(0)               = ?
[pid 20937] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20937, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20092", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20092", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20092/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20092/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20092/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20092")                        = 0
mkdir("./20093", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20938
./strace-static-x86_64: Process 20938 attached
[pid 20938] set_robust_list(0x5555589fe660, 24) = 0
[pid 20938] chdir("./20093")            = 0
[pid 20938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20938] setpgid(0, 0)               = 0
[pid 20938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20938] write(3, "1000", 4)         = 4
[pid 20938] close(3)                    = 0
[pid 20938] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20938] write(1, "executing program\n", 18) = 18
[pid 20938] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20938] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20938] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20938] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20938] exit_group(0)               = ?
[pid 20938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20093", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20093", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20093/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20093/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20093/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20093")                        = 0
mkdir("./20094", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20939
./strace-static-x86_64: Process 20939 attached
[pid 20939] set_robust_list(0x5555589fe660, 24) = 0
[pid 20939] chdir("./20094")            = 0
[pid 20939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20939] setpgid(0, 0)               = 0
[pid 20939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20939] write(3, "1000", 4)         = 4
[pid 20939] close(3)                    = 0
[pid 20939] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20939] write(1, "executing program\n", 18executing program
) = 18
[pid 20939] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20939] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20939] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20939] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20939] exit_group(0)               = ?
[pid 20939] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20939, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20094", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20094", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20094/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20094/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20094/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20094")                        = 0
mkdir("./20095", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20940
./strace-static-x86_64: Process 20940 attached
[pid 20940] set_robust_list(0x5555589fe660, 24) = 0
[pid 20940] chdir("./20095")            = 0
[pid 20940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20940] setpgid(0, 0)               = 0
[pid 20940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20940] write(3, "1000", 4)         = 4
[pid 20940] close(3)                    = 0
[pid 20940] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20940] write(1, "executing program\n", 18) = 18
[pid 20940] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20940] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20940] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20940] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20940] exit_group(0)               = ?
[pid 20940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20095", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20095", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20095/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20095/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20095/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20095")                        = 0
mkdir("./20096", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20941
./strace-static-x86_64: Process 20941 attached
[pid 20941] set_robust_list(0x5555589fe660, 24) = 0
[pid 20941] chdir("./20096")            = 0
[pid 20941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20941] setpgid(0, 0)               = 0
[pid 20941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20941] write(3, "1000", 4)         = 4
[pid 20941] close(3)                    = 0
[pid 20941] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20941] write(1, "executing program\n", 18) = 18
[pid 20941] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20941] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20941] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20941] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20941] exit_group(0)               = ?
[pid 20941] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20941, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20096", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20096", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20096/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20096/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20096/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20096")                        = 0
mkdir("./20097", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20942
./strace-static-x86_64: Process 20942 attached
[pid 20942] set_robust_list(0x5555589fe660, 24) = 0
[pid 20942] chdir("./20097")            = 0
[pid 20942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20942] setpgid(0, 0)               = 0
[pid 20942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20942] write(3, "1000", 4)         = 4
[pid 20942] close(3)                    = 0
[pid 20942] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20942] write(1, "executing program\n", 18) = 18
[pid 20942] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20942] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20942] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20942] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20942] exit_group(0)               = ?
[pid 20942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20097", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20097", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20097/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20097/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20097/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20097")                        = 0
mkdir("./20098", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20943
./strace-static-x86_64: Process 20943 attached
[pid 20943] set_robust_list(0x5555589fe660, 24) = 0
[pid 20943] chdir("./20098")            = 0
[pid 20943] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20943] setpgid(0, 0)               = 0
[pid 20943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20943] write(3, "1000", 4)         = 4
[pid 20943] close(3)                    = 0
[pid 20943] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20943] write(1, "executing program\n", 18executing program
) = 18
[pid 20943] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20943] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20943] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20943] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20943] exit_group(0)               = ?
[pid 20943] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20943, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20098", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20098", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20098/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20098/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20098/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20098")                        = 0
mkdir("./20099", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20944
./strace-static-x86_64: Process 20944 attached
[pid 20944] set_robust_list(0x5555589fe660, 24) = 0
[pid 20944] chdir("./20099")            = 0
[pid 20944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20944] setpgid(0, 0)               = 0
[pid 20944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20944] write(3, "1000", 4)         = 4
[pid 20944] close(3)                    = 0
[pid 20944] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20944] write(1, "executing program\n", 18executing program
) = 18
[pid 20944] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20944] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20944] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20944] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20944] exit_group(0)               = ?
[pid 20944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20099", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20099", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20099/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20099/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20099/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20099")                        = 0
mkdir("./20100", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20945
./strace-static-x86_64: Process 20945 attached
[pid 20945] set_robust_list(0x5555589fe660, 24) = 0
[pid 20945] chdir("./20100")            = 0
[pid 20945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20945] setpgid(0, 0)               = 0
[pid 20945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20945] write(3, "1000", 4)         = 4
[pid 20945] close(3)                    = 0
[pid 20945] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20945] write(1, "executing program\n", 18executing program
) = 18
[pid 20945] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20945] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20945] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20945] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20945] exit_group(0)               = ?
[pid 20945] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20945, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20100", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20100/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20100/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20100")                        = 0
mkdir("./20101", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20946 attached
 <unfinished ...>
[pid 20946] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20946
[pid 20946] chdir("./20101")            = 0
[pid 20946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20946] setpgid(0, 0)               = 0
[pid 20946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20946] write(3, "1000", 4)         = 4
[pid 20946] close(3)                    = 0
[pid 20946] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20946] write(1, "executing program\n", 18executing program
) = 18
[pid 20946] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20946] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20946] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20946] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20946] exit_group(0)               = ?
[pid 20946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20101", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20101/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20101/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20101")                        = 0
mkdir("./20102", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20947
./strace-static-x86_64: Process 20947 attached
[pid 20947] set_robust_list(0x5555589fe660, 24) = 0
[pid 20947] chdir("./20102")            = 0
[pid 20947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20947] setpgid(0, 0)               = 0
[pid 20947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20947] write(3, "1000", 4)         = 4
[pid 20947] close(3)                    = 0
[pid 20947] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20947] write(1, "executing program\n", 18) = 18
[pid 20947] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20947] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20947] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20947] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20947] exit_group(0)               = ?
[pid 20947] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20947, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20102", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20102/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20102/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20102")                        = 0
mkdir("./20103", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20948 attached
 <unfinished ...>
[pid 20948] set_robust_list(0x5555589fe660, 24) = 0
[pid 20948] chdir("./20103")            = 0
[pid 20948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20948] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20948
[pid 20948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20948] write(3, "1000", 4)         = 4
[pid 20948] close(3)                    = 0
[pid 20948] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20948] write(1, "executing program\n", 18) = 18
[pid 20948] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20948] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20948] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20948] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20948] exit_group(0)               = ?
[pid 20948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20103", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20103/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20103/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20103")                        = 0
mkdir("./20104", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20949
./strace-static-x86_64: Process 20949 attached
[pid 20949] set_robust_list(0x5555589fe660, 24) = 0
[pid 20949] chdir("./20104")            = 0
[pid 20949] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20949] setpgid(0, 0)               = 0
[pid 20949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20949] write(3, "1000", 4)         = 4
[pid 20949] close(3)                    = 0
[pid 20949] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20949] write(1, "executing program\n", 18executing program
) = 18
[pid 20949] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20949] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20949] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20949] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20949] exit_group(0)               = ?
[pid 20949] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20949, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20104", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20104/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20104/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20104")                        = 0
mkdir("./20105", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20950
./strace-static-x86_64: Process 20950 attached
[pid 20950] set_robust_list(0x5555589fe660, 24) = 0
[pid 20950] chdir("./20105")            = 0
[pid 20950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20950] setpgid(0, 0)               = 0
[pid 20950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20950] write(3, "1000", 4)         = 4
[pid 20950] close(3)                    = 0
[pid 20950] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20950] write(1, "executing program\n", 18executing program
) = 18
[pid 20950] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20950] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20950] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20950] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20950] exit_group(0)               = ?
[pid 20950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20105", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20105/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20105/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20105")                        = 0
mkdir("./20106", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20951
./strace-static-x86_64: Process 20951 attached
[pid 20951] set_robust_list(0x5555589fe660, 24) = 0
[pid 20951] chdir("./20106")            = 0
[pid 20951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20951] setpgid(0, 0)               = 0
[pid 20951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20951] write(3, "1000", 4)         = 4
[pid 20951] close(3)                    = 0
[pid 20951] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20951] write(1, "executing program\n", 18executing program
) = 18
[pid 20951] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20951] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20951] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20951] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20951] exit_group(0)               = ?
[pid 20951] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20951, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20106", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20106/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20106/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20106")                        = 0
mkdir("./20107", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20952
./strace-static-x86_64: Process 20952 attached
[pid 20952] set_robust_list(0x5555589fe660, 24) = 0
[pid 20952] chdir("./20107")            = 0
[pid 20952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20952] setpgid(0, 0)               = 0
[pid 20952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20952] write(3, "1000", 4)         = 4
[pid 20952] close(3)                    = 0
[pid 20952] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20952] write(1, "executing program\n", 18executing program
) = 18
[pid 20952] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20952] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20952] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20952] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20952] exit_group(0)               = ?
[pid 20952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20107", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20107/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20107/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20107")                        = 0
mkdir("./20108", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20953
./strace-static-x86_64: Process 20953 attached
[pid 20953] set_robust_list(0x5555589fe660, 24) = 0
[pid 20953] chdir("./20108")            = 0
[pid 20953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20953] setpgid(0, 0)               = 0
[pid 20953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20953] write(3, "1000", 4)         = 4
[pid 20953] close(3)                    = 0
[pid 20953] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20953] write(1, "executing program\n", 18executing program
) = 18
[pid 20953] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20953] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20953] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20953] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20953] exit_group(0)               = ?
[pid 20953] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20953, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20108", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20108/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20108/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20108")                        = 0
mkdir("./20109", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20954
./strace-static-x86_64: Process 20954 attached
[pid 20954] set_robust_list(0x5555589fe660, 24) = 0
[pid 20954] chdir("./20109")            = 0
[pid 20954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20954] setpgid(0, 0)               = 0
[pid 20954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20954] write(3, "1000", 4)         = 4
[pid 20954] close(3)                    = 0
[pid 20954] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20954] write(1, "executing program\n", 18) = 18
[pid 20954] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20954] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20954] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20954] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20954] exit_group(0)               = ?
[pid 20954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20109", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20109/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20109/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20109")                        = 0
mkdir("./20110", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20955
./strace-static-x86_64: Process 20955 attached
[pid 20955] set_robust_list(0x5555589fe660, 24) = 0
[pid 20955] chdir("./20110")            = 0
[pid 20955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20955] setpgid(0, 0)               = 0
[pid 20955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20955] write(3, "1000", 4)         = 4
[pid 20955] close(3)                    = 0
[pid 20955] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20955] write(1, "executing program\n", 18executing program
) = 18
[pid 20955] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20955] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20955] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20955] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20955] exit_group(0)               = ?
[pid 20955] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20955, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20110", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20110/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20110/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20110")                        = 0
mkdir("./20111", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20956
./strace-static-x86_64: Process 20956 attached
[pid 20956] set_robust_list(0x5555589fe660, 24) = 0
[pid 20956] chdir("./20111")            = 0
[pid 20956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20956] setpgid(0, 0)               = 0
[pid 20956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20956] write(3, "1000", 4)         = 4
[pid 20956] close(3)                    = 0
[pid 20956] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20956] write(1, "executing program\n", 18executing program
) = 18
[pid 20956] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20956] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20956] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20956] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20956] exit_group(0)               = ?
[pid 20956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20111", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20111/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20111/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20111")                        = 0
mkdir("./20112", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20957
./strace-static-x86_64: Process 20957 attached
[pid 20957] set_robust_list(0x5555589fe660, 24) = 0
[pid 20957] chdir("./20112")            = 0
[pid 20957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20957] setpgid(0, 0)               = 0
[pid 20957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20957] write(3, "1000", 4)         = 4
[pid 20957] close(3)                    = 0
[pid 20957] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20957] write(1, "executing program\n", 18executing program
) = 18
[pid 20957] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20957] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20957] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20957] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20957] exit_group(0)               = ?
[pid 20957] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20957, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20112", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20112/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20112/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20112")                        = 0
mkdir("./20113", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20958 attached
 <unfinished ...>
[pid 20958] set_robust_list(0x5555589fe660, 24 <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20958
[pid 20958] <... set_robust_list resumed>) = 0
[pid 20958] chdir("./20113")            = 0
[pid 20958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20958] setpgid(0, 0)               = 0
[pid 20958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20958] write(3, "1000", 4)         = 4
[pid 20958] close(3)                    = 0
[pid 20958] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20958] write(1, "executing program\n", 18executing program
) = 18
[pid 20958] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20958] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20958] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20958] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20958] exit_group(0)               = ?
[pid 20958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20113", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20113/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20113/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20113")                        = 0
mkdir("./20114", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20959
./strace-static-x86_64: Process 20959 attached
[pid 20959] set_robust_list(0x5555589fe660, 24) = 0
[pid 20959] chdir("./20114")            = 0
[pid 20959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20959] setpgid(0, 0)               = 0
[pid 20959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20959] write(3, "1000", 4)         = 4
[pid 20959] close(3)                    = 0
[pid 20959] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20959] write(1, "executing program\n", 18executing program
) = 18
[pid 20959] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20959] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20959] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20959] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20959] exit_group(0)               = ?
[pid 20959] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20959, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20114", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20114/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20114/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20114")                        = 0
mkdir("./20115", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20960 attached
, child_tidptr=0x5555589fe650) = 20960
[pid 20960] set_robust_list(0x5555589fe660, 24) = 0
[pid 20960] chdir("./20115")            = 0
[pid 20960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20960] setpgid(0, 0)               = 0
[pid 20960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20960] write(3, "1000", 4)         = 4
[pid 20960] close(3)                    = 0
[pid 20960] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20960] write(1, "executing program\n", 18executing program
) = 18
[pid 20960] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20960] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20960] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20960] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20960] exit_group(0)               = ?
[pid 20960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20960, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20115", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20115/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20115/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20115")                        = 0
mkdir("./20116", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20961 attached
 <unfinished ...>
[pid 20961] set_robust_list(0x5555589fe660, 24) = 0
[pid 20961] chdir("./20116")            = 0
[pid 20961] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20961] setpgid(0, 0)               = 0
[pid 20961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20961] write(3, "1000", 4)         = 4
[pid 20961] close(3)                    = 0
[pid 20961] symlink("/dev/binderfs", "./binderfs" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 20961
[pid 20961] <... symlink resumed>)      = 0
executing program
[pid 20961] write(1, "executing program\n", 18) = 18
[pid 20961] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20961] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20961] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20961] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20961] exit_group(0)               = ?
[pid 20961] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20961, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20116", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20116/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20116/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20116")                        = 0
mkdir("./20117", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20962
./strace-static-x86_64: Process 20962 attached
[pid 20962] set_robust_list(0x5555589fe660, 24) = 0
[pid 20962] chdir("./20117")            = 0
[pid 20962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20962] setpgid(0, 0)               = 0
[pid 20962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20962] write(3, "1000", 4)         = 4
[pid 20962] close(3)                    = 0
[pid 20962] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20962] write(1, "executing program\n", 18executing program
) = 18
[pid 20962] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20962] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20962] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20962] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20962] exit_group(0)               = ?
[pid 20962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20117", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20117/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20117/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20117")                        = 0
mkdir("./20118", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20963
./strace-static-x86_64: Process 20963 attached
[pid 20963] set_robust_list(0x5555589fe660, 24) = 0
[pid 20963] chdir("./20118")            = 0
[pid 20963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20963] setpgid(0, 0)               = 0
[pid 20963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20963] write(3, "1000", 4)         = 4
[pid 20963] close(3)                    = 0
[pid 20963] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20963] write(1, "executing program\n", 18) = 18
[pid 20963] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20963] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20963] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20963] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20963] exit_group(0)               = ?
[pid 20963] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20963, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20118", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20118/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20118/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20118")                        = 0
mkdir("./20119", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20964
./strace-static-x86_64: Process 20964 attached
[pid 20964] set_robust_list(0x5555589fe660, 24) = 0
[pid 20964] chdir("./20119")            = 0
[pid 20964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20964] setpgid(0, 0)               = 0
[pid 20964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20964] write(3, "1000", 4)         = 4
[pid 20964] close(3)                    = 0
[pid 20964] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20964] write(1, "executing program\n", 18executing program
) = 18
[pid 20964] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20964] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20964] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20964] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20964] exit_group(0)               = ?
[pid 20964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20119", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20119/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20119/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20119")                        = 0
mkdir("./20120", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20965
./strace-static-x86_64: Process 20965 attached
[pid 20965] set_robust_list(0x5555589fe660, 24) = 0
[pid 20965] chdir("./20120")            = 0
[pid 20965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20965] setpgid(0, 0)               = 0
[pid 20965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20965] write(3, "1000", 4)         = 4
[pid 20965] close(3)                    = 0
[pid 20965] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20965] write(1, "executing program\n", 18executing program
) = 18
[pid 20965] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20965] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20965] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20965] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20965] exit_group(0)               = ?
[pid 20965] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20965, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20120", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20120/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20120/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20120")                        = 0
mkdir("./20121", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20966
./strace-static-x86_64: Process 20966 attached
[pid 20966] set_robust_list(0x5555589fe660, 24) = 0
[pid 20966] chdir("./20121")            = 0
[pid 20966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20966] setpgid(0, 0)               = 0
[pid 20966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20966] write(3, "1000", 4)         = 4
[pid 20966] close(3)                    = 0
[pid 20966] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20966] write(1, "executing program\n", 18executing program
) = 18
[pid 20966] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20966] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20966] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20966] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20966] exit_group(0)               = ?
[pid 20966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20121", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20121/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20121/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20121")                        = 0
mkdir("./20122", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20967
./strace-static-x86_64: Process 20967 attached
[pid 20967] set_robust_list(0x5555589fe660, 24) = 0
[pid 20967] chdir("./20122")            = 0
[pid 20967] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20967] setpgid(0, 0)               = 0
[pid 20967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20967] write(3, "1000", 4)         = 4
[pid 20967] close(3)                    = 0
[pid 20967] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20967] write(1, "executing program\n", 18) = 18
[pid 20967] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20967] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20967] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20967] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20967] exit_group(0)               = ?
[pid 20967] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20967, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20122", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20122/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20122/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20122")                        = 0
mkdir("./20123", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20968 attached
, child_tidptr=0x5555589fe650) = 20968
[pid 20968] set_robust_list(0x5555589fe660, 24) = 0
[pid 20968] chdir("./20123")            = 0
[pid 20968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20968] setpgid(0, 0)               = 0
[pid 20968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20968] write(3, "1000", 4)         = 4
[pid 20968] close(3)                    = 0
[pid 20968] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20968] write(1, "executing program\n", 18executing program
) = 18
[pid 20968] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20968] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20968] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20968] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20968] exit_group(0)               = ?
[pid 20968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20968, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20123", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20123/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20123/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20123")                        = 0
mkdir("./20124", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20969
./strace-static-x86_64: Process 20969 attached
[pid 20969] set_robust_list(0x5555589fe660, 24) = 0
[pid 20969] chdir("./20124")            = 0
[pid 20969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20969] setpgid(0, 0)               = 0
[pid 20969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20969] write(3, "1000", 4)         = 4
[pid 20969] close(3)                    = 0
[pid 20969] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20969] write(1, "executing program\n", 18executing program
) = 18
[pid 20969] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20969] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20969] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20969] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20969] exit_group(0)               = ?
[pid 20969] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20969, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20124", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20124/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20124/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20124")                        = 0
mkdir("./20125", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20970
./strace-static-x86_64: Process 20970 attached
[pid 20970] set_robust_list(0x5555589fe660, 24) = 0
[pid 20970] chdir("./20125")            = 0
[pid 20970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20970] setpgid(0, 0)               = 0
[pid 20970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20970] write(3, "1000", 4)         = 4
[pid 20970] close(3)                    = 0
[pid 20970] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20970] write(1, "executing program\n", 18) = 18
[pid 20970] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20970] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20970] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20970] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20970] exit_group(0)               = ?
[pid 20970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20125", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20125/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20125/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20125")                        = 0
mkdir("./20126", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20971
./strace-static-x86_64: Process 20971 attached
[pid 20971] set_robust_list(0x5555589fe660, 24) = 0
[pid 20971] chdir("./20126")            = 0
[pid 20971] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20971] setpgid(0, 0)               = 0
[pid 20971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20971] write(3, "1000", 4)         = 4
[pid 20971] close(3)                    = 0
[pid 20971] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20971] write(1, "executing program\n", 18) = 18
[pid 20971] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20971] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20971] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20971] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20971] exit_group(0)               = ?
[pid 20971] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20971, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20126", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20126/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20126/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20126")                        = 0
mkdir("./20127", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20972
./strace-static-x86_64: Process 20972 attached
[pid 20972] set_robust_list(0x5555589fe660, 24) = 0
[pid 20972] chdir("./20127")            = 0
[pid 20972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20972] setpgid(0, 0)               = 0
[pid 20972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20972] write(3, "1000", 4)         = 4
[pid 20972] close(3)                    = 0
[pid 20972] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20972] write(1, "executing program\n", 18) = 18
[pid 20972] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20972] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20972] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20972] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20972] exit_group(0)               = ?
[pid 20972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20127", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20127/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20127/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20127")                        = 0
mkdir("./20128", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20973 attached
, child_tidptr=0x5555589fe650) = 20973
[pid 20973] set_robust_list(0x5555589fe660, 24) = 0
[pid 20973] chdir("./20128")            = 0
[pid 20973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20973] setpgid(0, 0)               = 0
[pid 20973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20973] write(3, "1000", 4)         = 4
[pid 20973] close(3)                    = 0
[pid 20973] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20973] write(1, "executing program\n", 18executing program
) = 18
[pid 20973] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20973] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20973] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20973] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20973] exit_group(0)               = ?
[pid 20973] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20973, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20128", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20128/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20128/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20128")                        = 0
mkdir("./20129", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20974 attached
, child_tidptr=0x5555589fe650) = 20974
[pid 20974] set_robust_list(0x5555589fe660, 24) = 0
[pid 20974] chdir("./20129")            = 0
[pid 20974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20974] setpgid(0, 0)               = 0
[pid 20974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20974] write(3, "1000", 4)         = 4
[pid 20974] close(3)                    = 0
[pid 20974] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20974] write(1, "executing program\n", 18executing program
) = 18
[pid 20974] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20974] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20974] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20974] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20974] exit_group(0)               = ?
[pid 20974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20129", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20129/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20129/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20129")                        = 0
mkdir("./20130", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20975
./strace-static-x86_64: Process 20975 attached
[pid 20975] set_robust_list(0x5555589fe660, 24) = 0
[pid 20975] chdir("./20130")            = 0
[pid 20975] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20975] setpgid(0, 0)               = 0
[pid 20975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20975] write(3, "1000", 4)         = 4
[pid 20975] close(3)                    = 0
[pid 20975] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20975] write(1, "executing program\n", 18) = 18
[pid 20975] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20975] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20975] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20975] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20975] exit_group(0)               = ?
[pid 20975] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20975, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20130", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20130/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20130/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20130")                        = 0
mkdir("./20131", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20976
./strace-static-x86_64: Process 20976 attached
[pid 20976] set_robust_list(0x5555589fe660, 24) = 0
[pid 20976] chdir("./20131")            = 0
[pid 20976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20976] setpgid(0, 0)               = 0
[pid 20976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20976] write(3, "1000", 4)         = 4
[pid 20976] close(3)                    = 0
[pid 20976] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20976] write(1, "executing program\n", 18executing program
) = 18
[pid 20976] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20976] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20976] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20976] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20976] exit_group(0)               = ?
[pid 20976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20131", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20131/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20131/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20131")                        = 0
mkdir("./20132", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20977
./strace-static-x86_64: Process 20977 attached
[pid 20977] set_robust_list(0x5555589fe660, 24) = 0
[pid 20977] chdir("./20132")            = 0
[pid 20977] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20977] setpgid(0, 0)               = 0
[pid 20977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20977] write(3, "1000", 4)         = 4
[pid 20977] close(3)                    = 0
[pid 20977] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20977] write(1, "executing program\n", 18) = 18
[pid 20977] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20977] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20977] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20977] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20977] exit_group(0)               = ?
[pid 20977] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20977, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20132", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20132/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20132/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20132")                        = 0
mkdir("./20133", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20978
./strace-static-x86_64: Process 20978 attached
[pid 20978] set_robust_list(0x5555589fe660, 24) = 0
[pid 20978] chdir("./20133")            = 0
[pid 20978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20978] setpgid(0, 0)               = 0
[pid 20978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20978] write(3, "1000", 4)         = 4
[pid 20978] close(3)                    = 0
[pid 20978] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20978] write(1, "executing program\n", 18) = 18
[pid 20978] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20978] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20978] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20978] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20978] exit_group(0)               = ?
[pid 20978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20978, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20133", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20133/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20133/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20133")                        = 0
mkdir("./20134", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20980 attached
, child_tidptr=0x5555589fe650) = 20980
[pid 20980] set_robust_list(0x5555589fe660, 24) = 0
[pid 20980] chdir("./20134")            = 0
[pid 20980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20980] setpgid(0, 0)               = 0
[pid 20980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20980] write(3, "1000", 4)         = 4
[pid 20980] close(3)                    = 0
[pid 20980] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20980] write(1, "executing program\n", 18) = 18
[pid 20980] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20980] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20980] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20980] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20980] exit_group(0)               = ?
[pid 20980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20134", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20134/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20134/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20134")                        = 0
mkdir("./20135", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20981
./strace-static-x86_64: Process 20981 attached
[pid 20981] set_robust_list(0x5555589fe660, 24) = 0
[pid 20981] chdir("./20135")            = 0
[pid 20981] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20981] setpgid(0, 0)               = 0
[pid 20981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20981] write(3, "1000", 4)         = 4
[pid 20981] close(3)                    = 0
[pid 20981] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20981] write(1, "executing program\n", 18executing program
) = 18
[pid 20981] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20981] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20981] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20981] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20981] exit_group(0)               = ?
[pid 20981] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20981, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20135", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20135/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20135/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20135")                        = 0
mkdir("./20136", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20982
./strace-static-x86_64: Process 20982 attached
[pid 20982] set_robust_list(0x5555589fe660, 24) = 0
[pid 20982] chdir("./20136")            = 0
[pid 20982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20982] setpgid(0, 0)               = 0
[pid 20982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20982] write(3, "1000", 4)         = 4
[pid 20982] close(3)                    = 0
[pid 20982] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20982] write(1, "executing program\n", 18) = 18
[pid 20982] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20982] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20982] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20982] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20982] exit_group(0)               = ?
[pid 20982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20982, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20136", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20136/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20136/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20136")                        = 0
mkdir("./20137", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20983 attached
, child_tidptr=0x5555589fe650) = 20983
[pid 20983] set_robust_list(0x5555589fe660, 24) = 0
[pid 20983] chdir("./20137")            = 0
[pid 20983] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20983] setpgid(0, 0)               = 0
[pid 20983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20983] write(3, "1000", 4)         = 4
[pid 20983] close(3)                    = 0
[pid 20983] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20983] write(1, "executing program\n", 18) = 18
[pid 20983] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20983] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20983] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20983] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20983] exit_group(0)               = ?
[pid 20983] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20983, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20137", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20137/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20137/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20137")                        = 0
mkdir("./20138", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20984
./strace-static-x86_64: Process 20984 attached
[pid 20984] set_robust_list(0x5555589fe660, 24) = 0
[pid 20984] chdir("./20138")            = 0
[pid 20984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20984] setpgid(0, 0)               = 0
[pid 20984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20984] write(3, "1000", 4)         = 4
[pid 20984] close(3)                    = 0
[pid 20984] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20984] write(1, "executing program\n", 18) = 18
[pid 20984] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20984] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20984] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20984] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20984] exit_group(0)               = ?
[pid 20984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20138", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20138/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20138/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20138")                        = 0
mkdir("./20139", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20985 attached
, child_tidptr=0x5555589fe650) = 20985
[pid 20985] set_robust_list(0x5555589fe660, 24) = 0
[pid 20985] chdir("./20139")            = 0
[pid 20985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20985] setpgid(0, 0)               = 0
[pid 20985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20985] write(3, "1000", 4)         = 4
[pid 20985] close(3)                    = 0
[pid 20985] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20985] write(1, "executing program\n", 18executing program
) = 18
[pid 20985] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20985] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20985] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20985] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20985] exit_group(0)               = ?
[pid 20985] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20985, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20139", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20139/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20139/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20139")                        = 0
mkdir("./20140", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20986 attached
, child_tidptr=0x5555589fe650) = 20986
[pid 20986] set_robust_list(0x5555589fe660, 24) = 0
[pid 20986] chdir("./20140")            = 0
[pid 20986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20986] setpgid(0, 0)               = 0
[pid 20986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20986] write(3, "1000", 4)         = 4
[pid 20986] close(3)                    = 0
[pid 20986] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20986] write(1, "executing program\n", 18executing program
) = 18
[pid 20986] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20986] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20986] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20986] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20986] exit_group(0)               = ?
[pid 20986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20140", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20140/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20140/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20140")                        = 0
mkdir("./20141", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20987
./strace-static-x86_64: Process 20987 attached
[pid 20987] set_robust_list(0x5555589fe660, 24) = 0
[pid 20987] chdir("./20141")            = 0
[pid 20987] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20987] setpgid(0, 0)               = 0
[pid 20987] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20987] write(3, "1000", 4)         = 4
[pid 20987] close(3)                    = 0
[pid 20987] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20987] write(1, "executing program\n", 18) = 18
[pid 20987] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20987] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20987] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20987] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20987] exit_group(0)               = ?
[pid 20987] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20987, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20141", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20141/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20141/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20141")                        = 0
mkdir("./20142", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20988 attached
, child_tidptr=0x5555589fe650) = 20988
[pid 20988] set_robust_list(0x5555589fe660, 24) = 0
[pid 20988] chdir("./20142")            = 0
[pid 20988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20988] setpgid(0, 0)               = 0
[pid 20988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20988] write(3, "1000", 4)         = 4
[pid 20988] close(3)                    = 0
[pid 20988] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 20988] write(1, "executing program\n", 18) = 18
[pid 20988] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20988] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20988] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20988] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20988] exit_group(0)               = ?
[pid 20988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20142", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20142/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20142/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20142")                        = 0
mkdir("./20143", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20989
./strace-static-x86_64: Process 20989 attached
[pid 20989] set_robust_list(0x5555589fe660, 24) = 0
[pid 20989] chdir("./20143")            = 0
[pid 20989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20989] setpgid(0, 0)               = 0
[pid 20989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20989] write(3, "1000", 4)         = 4
[pid 20989] close(3)                    = 0
[pid 20989] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20989] write(1, "executing program\n", 18executing program
) = 18
[pid 20989] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20989] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20989] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20989] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20989] exit_group(0)               = ?
[pid 20989] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20989, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20143", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20143/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20143/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20143")                        = 0
mkdir("./20144", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20990
./strace-static-x86_64: Process 20990 attached
[pid 20990] set_robust_list(0x5555589fe660, 24) = 0
[pid 20990] chdir("./20144")            = 0
[pid 20990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20990] setpgid(0, 0)               = 0
[pid 20990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20990] write(3, "1000", 4)         = 4
[pid 20990] close(3)                    = 0
[pid 20990] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20990] write(1, "executing program\n", 18executing program
) = 18
[pid 20990] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20990] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20990] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20990] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20990] exit_group(0)               = ?
[pid 20990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20144", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20144/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20144/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20144")                        = 0
mkdir("./20145", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20991
./strace-static-x86_64: Process 20991 attached
[pid 20991] set_robust_list(0x5555589fe660, 24) = 0
[pid 20991] chdir("./20145")            = 0
[pid 20991] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20991] setpgid(0, 0)               = 0
[pid 20991] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20991] write(3, "1000", 4)         = 4
[pid 20991] close(3)                    = 0
[pid 20991] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20991] write(1, "executing program\n", 18executing program
) = 18
[pid 20991] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20991] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20991] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20991] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20991] exit_group(0)               = ?
[pid 20991] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20991, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20145", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20145/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20145/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20145/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20145")                        = 0
mkdir("./20146", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20992
./strace-static-x86_64: Process 20992 attached
[pid 20992] set_robust_list(0x5555589fe660, 24) = 0
[pid 20992] chdir("./20146")            = 0
[pid 20992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20992] setpgid(0, 0)               = 0
[pid 20992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20992] write(3, "1000", 4)         = 4
[pid 20992] close(3)                    = 0
[pid 20992] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20992] write(1, "executing program\n", 18executing program
) = 18
[pid 20992] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20992] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20992] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20992] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20992] exit_group(0)               = ?
[pid 20992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20146", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20146/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20146/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20146")                        = 0
mkdir("./20147", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20993
./strace-static-x86_64: Process 20993 attached
[pid 20993] set_robust_list(0x5555589fe660, 24) = 0
[pid 20993] chdir("./20147")            = 0
[pid 20993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20993] setpgid(0, 0)               = 0
[pid 20993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20993] write(3, "1000", 4)         = 4
[pid 20993] close(3)                    = 0
[pid 20993] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20993] write(1, "executing program\n", 18executing program
) = 18
[pid 20993] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20993] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20993] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20993] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20993] exit_group(0)               = ?
[pid 20993] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20993, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20147", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20147/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20147/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20147/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20147")                        = 0
mkdir("./20148", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20994
./strace-static-x86_64: Process 20994 attached
[pid 20994] set_robust_list(0x5555589fe660, 24) = 0
[pid 20994] chdir("./20148")            = 0
[pid 20994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20994] setpgid(0, 0)               = 0
[pid 20994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20994] write(3, "1000", 4)         = 4
[pid 20994] close(3)                    = 0
[pid 20994] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20994] write(1, "executing program\n", 18) = 18
[pid 20994] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20994] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20994] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20994] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20994] exit_group(0)               = ?
[pid 20994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20148", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20148/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20148/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20148")                        = 0
mkdir("./20149", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20995 attached
, child_tidptr=0x5555589fe650) = 20995
[pid 20995] set_robust_list(0x5555589fe660, 24) = 0
[pid 20995] chdir("./20149")            = 0
[pid 20995] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20995] setpgid(0, 0)               = 0
[pid 20995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20995] write(3, "1000", 4)         = 4
[pid 20995] close(3)                    = 0
[pid 20995] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20995] write(1, "executing program\n", 18) = 18
[pid 20995] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20995] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20995] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20995] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20995] exit_group(0)               = ?
[pid 20995] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20995, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20149", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20149/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20149/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20149")                        = 0
mkdir("./20150", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20996
./strace-static-x86_64: Process 20996 attached
[pid 20996] set_robust_list(0x5555589fe660, 24) = 0
[pid 20996] chdir("./20150")            = 0
[pid 20996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20996] setpgid(0, 0)               = 0
[pid 20996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20996] write(3, "1000", 4)         = 4
[pid 20996] close(3)                    = 0
[pid 20996] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20996] write(1, "executing program\n", 18) = 18
[pid 20996] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20996] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20996] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20996] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20996] exit_group(0)               = ?
[pid 20996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20996, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20150", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20150/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20150/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20150/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20150")                        = 0
mkdir("./20151", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 20997 attached
, child_tidptr=0x5555589fe650) = 20997
[pid 20997] set_robust_list(0x5555589fe660, 24) = 0
[pid 20997] chdir("./20151")            = 0
[pid 20997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20997] setpgid(0, 0)               = 0
[pid 20997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20997] write(3, "1000", 4)         = 4
[pid 20997] close(3)                    = 0
[pid 20997] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20997] write(1, "executing program\n", 18executing program
) = 18
[pid 20997] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20997] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20997] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20997] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20997] exit_group(0)               = ?
[pid 20997] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20997, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20151", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20151/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20151/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20151")                        = 0
mkdir("./20152", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20998
./strace-static-x86_64: Process 20998 attached
[pid 20998] set_robust_list(0x5555589fe660, 24) = 0
[pid 20998] chdir("./20152")            = 0
[pid 20998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20998] setpgid(0, 0)               = 0
[pid 20998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20998] write(3, "1000", 4)         = 4
[pid 20998] close(3)                    = 0
[pid 20998] symlink("/dev/binderfs", "./binderfs") = 0
[pid 20998] write(1, "executing program\n", 18executing program
) = 18
[pid 20998] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20998] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20998] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20998] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20998] exit_group(0)               = ?
[pid 20998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20152", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20152/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20152/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20152")                        = 0
mkdir("./20153", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 20999
./strace-static-x86_64: Process 20999 attached
[pid 20999] set_robust_list(0x5555589fe660, 24) = 0
[pid 20999] chdir("./20153")            = 0
[pid 20999] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 20999] setpgid(0, 0)               = 0
[pid 20999] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 20999] write(3, "1000", 4)         = 4
[pid 20999] close(3)                    = 0
[pid 20999] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 20999] write(1, "executing program\n", 18) = 18
[pid 20999] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 20999] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 20999] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 20999] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 20999] exit_group(0)               = ?
[pid 20999] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20999, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20153", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20153/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20153/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20153/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20153")                        = 0
mkdir("./20154", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21000 attached
, child_tidptr=0x5555589fe650) = 21000
[pid 21000] set_robust_list(0x5555589fe660, 24) = 0
[pid 21000] chdir("./20154")            = 0
[pid 21000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21000] setpgid(0, 0)               = 0
[pid 21000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21000] write(3, "1000", 4)         = 4
[pid 21000] close(3)                    = 0
[pid 21000] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21000] write(1, "executing program\n", 18) = 18
[pid 21000] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21000] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21000] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21000] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21000] exit_group(0)               = ?
[pid 21000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20154", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20154/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20154/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20154/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20154")                        = 0
mkdir("./20155", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21001 attached
, child_tidptr=0x5555589fe650) = 21001
[pid 21001] set_robust_list(0x5555589fe660, 24) = 0
[pid 21001] chdir("./20155")            = 0
[pid 21001] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21001] setpgid(0, 0)               = 0
[pid 21001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21001] write(3, "1000", 4)         = 4
[pid 21001] close(3)                    = 0
[pid 21001] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21001] write(1, "executing program\n", 18) = 18
[pid 21001] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21001] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21001] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21001] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21001] exit_group(0)               = ?
[pid 21001] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21001, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20155", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20155/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20155/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20155")                        = 0
mkdir("./20156", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21002 attached
, child_tidptr=0x5555589fe650) = 21002
[pid 21002] set_robust_list(0x5555589fe660, 24) = 0
[pid 21002] chdir("./20156")            = 0
[pid 21002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21002] setpgid(0, 0)               = 0
[pid 21002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21002] write(3, "1000", 4)         = 4
[pid 21002] close(3)                    = 0
[pid 21002] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21002] write(1, "executing program\n", 18executing program
) = 18
[pid 21002] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21002] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21002] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21002] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21002] exit_group(0)               = ?
[pid 21002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20156", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20156", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20156/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20156/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20156/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20156")                        = 0
mkdir("./20157", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21003
./strace-static-x86_64: Process 21003 attached
[pid 21003] set_robust_list(0x5555589fe660, 24) = 0
[pid 21003] chdir("./20157")            = 0
[pid 21003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21003] setpgid(0, 0)               = 0
[pid 21003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21003] write(3, "1000", 4)         = 4
[pid 21003] close(3)                    = 0
[pid 21003] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21003] write(1, "executing program\n", 18executing program
) = 18
[pid 21003] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21003] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21003] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21003] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21003] exit_group(0)               = ?
[pid 21003] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21003, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20157", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20157", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20157/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20157/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20157/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20157")                        = 0
mkdir("./20158", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21004
./strace-static-x86_64: Process 21004 attached
[pid 21004] set_robust_list(0x5555589fe660, 24) = 0
[pid 21004] chdir("./20158")            = 0
[pid 21004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21004] setpgid(0, 0)               = 0
[pid 21004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21004] write(3, "1000", 4)         = 4
[pid 21004] close(3)                    = 0
[pid 21004] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21004] write(1, "executing program\n", 18executing program
) = 18
[pid 21004] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21004] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21004] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21004] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21004] exit_group(0)               = ?
[pid 21004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20158", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20158", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20158/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20158/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20158/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20158")                        = 0
mkdir("./20159", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21005
./strace-static-x86_64: Process 21005 attached
[pid 21005] set_robust_list(0x5555589fe660, 24) = 0
[pid 21005] chdir("./20159")            = 0
[pid 21005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21005] setpgid(0, 0)               = 0
[pid 21005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21005] write(3, "1000", 4)         = 4
[pid 21005] close(3)                    = 0
[pid 21005] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21005] write(1, "executing program\n", 18executing program
) = 18
[pid 21005] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21005] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21005] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21005] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21005] exit_group(0)               = ?
[pid 21005] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21005, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20159", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20159", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20159/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20159/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20159/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20159")                        = 0
mkdir("./20160", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21006 attached
, child_tidptr=0x5555589fe650) = 21006
[pid 21006] set_robust_list(0x5555589fe660, 24) = 0
[pid 21006] chdir("./20160")            = 0
[pid 21006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21006] setpgid(0, 0)               = 0
[pid 21006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21006] write(3, "1000", 4)         = 4
[pid 21006] close(3)                    = 0
[pid 21006] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21006] write(1, "executing program\n", 18executing program
) = 18
[pid 21006] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21006] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21006] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21006] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21006] exit_group(0)               = ?
[pid 21006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20160", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20160", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20160/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20160/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20160/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20160")                        = 0
mkdir("./20161", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21007
./strace-static-x86_64: Process 21007 attached
[pid 21007] set_robust_list(0x5555589fe660, 24) = 0
[pid 21007] chdir("./20161")            = 0
[pid 21007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21007] setpgid(0, 0)               = 0
[pid 21007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21007] write(3, "1000", 4)         = 4
[pid 21007] close(3)                    = 0
[pid 21007] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21007] write(1, "executing program\n", 18) = 18
[pid 21007] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21007] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21007] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21007] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21007] exit_group(0)               = ?
[pid 21007] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21007, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20161", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20161", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20161/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20161/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20161/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20161")                        = 0
mkdir("./20162", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21008
./strace-static-x86_64: Process 21008 attached
[pid 21008] set_robust_list(0x5555589fe660, 24) = 0
[pid 21008] chdir("./20162")            = 0
[pid 21008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21008] setpgid(0, 0)               = 0
[pid 21008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21008] write(3, "1000", 4)         = 4
[pid 21008] close(3)                    = 0
[pid 21008] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21008] write(1, "executing program\n", 18executing program
) = 18
[pid 21008] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21008] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21008] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21008] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21008] exit_group(0)               = ?
[pid 21008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20162", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20162", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20162/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20162/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20162/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20162")                        = 0
mkdir("./20163", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21009
./strace-static-x86_64: Process 21009 attached
[pid 21009] set_robust_list(0x5555589fe660, 24) = 0
[pid 21009] chdir("./20163")            = 0
[pid 21009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21009] setpgid(0, 0)               = 0
[pid 21009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21009] write(3, "1000", 4)         = 4
[pid 21009] close(3)                    = 0
[pid 21009] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21009] write(1, "executing program\n", 18executing program
) = 18
[pid 21009] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21009] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21009] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21009] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21009] exit_group(0)               = ?
[pid 21009] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21009, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20163", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20163", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20163/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20163/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20163/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20163")                        = 0
mkdir("./20164", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21010
./strace-static-x86_64: Process 21010 attached
[pid 21010] set_robust_list(0x5555589fe660, 24) = 0
[pid 21010] chdir("./20164")            = 0
[pid 21010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21010] setpgid(0, 0)               = 0
[pid 21010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21010] write(3, "1000", 4)         = 4
[pid 21010] close(3)                    = 0
[pid 21010] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21010] write(1, "executing program\n", 18executing program
) = 18
[pid 21010] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21010] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21010] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21010] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21010] exit_group(0)               = ?
[pid 21010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20164", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20164", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20164/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20164/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20164/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20164")                        = 0
mkdir("./20165", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21011
./strace-static-x86_64: Process 21011 attached
[pid 21011] set_robust_list(0x5555589fe660, 24) = 0
[pid 21011] chdir("./20165")            = 0
[pid 21011] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21011] setpgid(0, 0)               = 0
[pid 21011] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21011] write(3, "1000", 4)         = 4
[pid 21011] close(3)                    = 0
[pid 21011] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21011] write(1, "executing program\n", 18executing program
) = 18
[pid 21011] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21011] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21011] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21011] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21011] exit_group(0)               = ?
[pid 21011] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21011, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20165", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20165", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20165/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20165/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20165/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20165")                        = 0
mkdir("./20166", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21012 attached
, child_tidptr=0x5555589fe650) = 21012
[pid 21012] set_robust_list(0x5555589fe660, 24) = 0
[pid 21012] chdir("./20166")            = 0
[pid 21012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21012] setpgid(0, 0)               = 0
[pid 21012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21012] write(3, "1000", 4)         = 4
[pid 21012] close(3)                    = 0
[pid 21012] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21012] write(1, "executing program\n", 18executing program
) = 18
[pid 21012] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21012] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21012] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21012] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21012] exit_group(0)               = ?
[pid 21012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20166", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20166", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20166/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20166/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20166/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20166")                        = 0
mkdir("./20167", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21013
./strace-static-x86_64: Process 21013 attached
[pid 21013] set_robust_list(0x5555589fe660, 24) = 0
[pid 21013] chdir("./20167")            = 0
[pid 21013] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21013] setpgid(0, 0)               = 0
[pid 21013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21013] write(3, "1000", 4)         = 4
[pid 21013] close(3)                    = 0
[pid 21013] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21013] write(1, "executing program\n", 18executing program
) = 18
[pid 21013] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21013] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21013] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21013] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21013] exit_group(0)               = ?
[pid 21013] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21013, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20167", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20167", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20167/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20167/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20167/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20167")                        = 0
mkdir("./20168", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21014
./strace-static-x86_64: Process 21014 attached
[pid 21014] set_robust_list(0x5555589fe660, 24) = 0
[pid 21014] chdir("./20168")            = 0
[pid 21014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21014] setpgid(0, 0)               = 0
[pid 21014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21014] write(3, "1000", 4)         = 4
[pid 21014] close(3)                    = 0
[pid 21014] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21014] write(1, "executing program\n", 18executing program
) = 18
[pid 21014] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21014] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21014] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21014] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21014] exit_group(0)               = ?
[pid 21014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20168", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20168", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20168/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20168/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20168/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20168")                        = 0
mkdir("./20169", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21015
./strace-static-x86_64: Process 21015 attached
[pid 21015] set_robust_list(0x5555589fe660, 24) = 0
[pid 21015] chdir("./20169")            = 0
[pid 21015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21015] setpgid(0, 0)               = 0
[pid 21015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21015] write(3, "1000", 4)         = 4
[pid 21015] close(3)                    = 0
[pid 21015] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21015] write(1, "executing program\n", 18executing program
) = 18
[pid 21015] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21015] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21015] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21015] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21015] exit_group(0)               = ?
[pid 21015] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21015, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20169", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20169", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20169/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20169/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20169/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20169")                        = 0
mkdir("./20170", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21016
./strace-static-x86_64: Process 21016 attached
[pid 21016] set_robust_list(0x5555589fe660, 24) = 0
[pid 21016] chdir("./20170")            = 0
[pid 21016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21016] setpgid(0, 0)               = 0
[pid 21016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21016] write(3, "1000", 4)         = 4
[pid 21016] close(3)                    = 0
[pid 21016] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21016] write(1, "executing program\n", 18executing program
) = 18
[pid 21016] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21016] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21016] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21016] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21016] exit_group(0)               = ?
[pid 21016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20170", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20170", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20170/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20170/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20170/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20170")                        = 0
mkdir("./20171", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21017
./strace-static-x86_64: Process 21017 attached
[pid 21017] set_robust_list(0x5555589fe660, 24) = 0
[pid 21017] chdir("./20171")            = 0
[pid 21017] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21017] setpgid(0, 0)               = 0
[pid 21017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21017] write(3, "1000", 4)         = 4
[pid 21017] close(3)                    = 0
[pid 21017] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21017] write(1, "executing program\n", 18executing program
) = 18
[pid 21017] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21017] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21017] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21017] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21017] exit_group(0)               = ?
[pid 21017] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21017, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20171", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20171", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20171/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20171/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20171/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20171")                        = 0
mkdir("./20172", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21018
./strace-static-x86_64: Process 21018 attached
[pid 21018] set_robust_list(0x5555589fe660, 24) = 0
[pid 21018] chdir("./20172")            = 0
[pid 21018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21018] setpgid(0, 0)               = 0
[pid 21018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21018] write(3, "1000", 4)         = 4
[pid 21018] close(3)                    = 0
[pid 21018] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21018] write(1, "executing program\n", 18executing program
) = 18
[pid 21018] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21018] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21018] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21018] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21018] exit_group(0)               = ?
[pid 21018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20172", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20172", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20172/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20172/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20172/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20172")                        = 0
mkdir("./20173", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21019 attached
, child_tidptr=0x5555589fe650) = 21019
[pid 21019] set_robust_list(0x5555589fe660, 24) = 0
[pid 21019] chdir("./20173")            = 0
[pid 21019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21019] setpgid(0, 0)               = 0
[pid 21019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21019] write(3, "1000", 4)         = 4
[pid 21019] close(3)                    = 0
[pid 21019] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21019] write(1, "executing program\n", 18executing program
) = 18
[pid 21019] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21019] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21019] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21019] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21019] exit_group(0)               = ?
[pid 21019] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21019, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20173", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20173", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20173/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20173/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20173/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20173")                        = 0
mkdir("./20174", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21020 attached
, child_tidptr=0x5555589fe650) = 21020
[pid 21020] set_robust_list(0x5555589fe660, 24) = 0
[pid 21020] chdir("./20174")            = 0
[pid 21020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21020] setpgid(0, 0)               = 0
[pid 21020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21020] write(3, "1000", 4)         = 4
[pid 21020] close(3)                    = 0
[pid 21020] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21020] write(1, "executing program\n", 18executing program
) = 18
[pid 21020] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21020] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21020] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21020] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21020] exit_group(0)               = ?
[pid 21020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20174", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20174", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20174/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20174/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20174/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20174")                        = 0
mkdir("./20175", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21021
./strace-static-x86_64: Process 21021 attached
[pid 21021] set_robust_list(0x5555589fe660, 24) = 0
[pid 21021] chdir("./20175")            = 0
[pid 21021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21021] setpgid(0, 0)               = 0
[pid 21021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21021] write(3, "1000", 4)         = 4
[pid 21021] close(3)                    = 0
[pid 21021] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21021] write(1, "executing program\n", 18executing program
) = 18
[pid 21021] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21021] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21021] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21021] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21021] exit_group(0)               = ?
[pid 21021] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21021, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20175", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20175", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20175/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20175/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20175/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20175")                        = 0
mkdir("./20176", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21022 attached
, child_tidptr=0x5555589fe650) = 21022
[pid 21022] set_robust_list(0x5555589fe660, 24) = 0
[pid 21022] chdir("./20176")            = 0
[pid 21022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21022] setpgid(0, 0)               = 0
[pid 21022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21022] write(3, "1000", 4)         = 4
[pid 21022] close(3)                    = 0
[pid 21022] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21022] write(1, "executing program\n", 18executing program
) = 18
[pid 21022] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21022] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21022] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21022] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21022] exit_group(0)               = ?
[pid 21022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20176", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20176", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20176/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20176/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20176/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20176")                        = 0
mkdir("./20177", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21023
./strace-static-x86_64: Process 21023 attached
[pid 21023] set_robust_list(0x5555589fe660, 24) = 0
[pid 21023] chdir("./20177")            = 0
[pid 21023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21023] setpgid(0, 0)               = 0
[pid 21023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21023] write(3, "1000", 4)         = 4
[pid 21023] close(3)                    = 0
[pid 21023] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21023] write(1, "executing program\n", 18) = 18
[pid 21023] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21023] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21023] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21023] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21023] exit_group(0)               = ?
[pid 21023] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21023, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20177", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20177", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20177/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20177/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20177/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20177")                        = 0
mkdir("./20178", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21024
./strace-static-x86_64: Process 21024 attached
[pid 21024] set_robust_list(0x5555589fe660, 24) = 0
[pid 21024] chdir("./20178")            = 0
[pid 21024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21024] setpgid(0, 0)               = 0
[pid 21024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21024] write(3, "1000", 4)         = 4
[pid 21024] close(3)                    = 0
[pid 21024] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21024] write(1, "executing program\n", 18executing program
) = 18
[pid 21024] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21024] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21024] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21024] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21024] exit_group(0)               = ?
[pid 21024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20178", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20178", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20178/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20178/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20178/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20178")                        = 0
mkdir("./20179", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21025 attached
, child_tidptr=0x5555589fe650) = 21025
[pid 21025] set_robust_list(0x5555589fe660, 24) = 0
[pid 21025] chdir("./20179")            = 0
[pid 21025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21025] setpgid(0, 0)               = 0
[pid 21025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21025] write(3, "1000", 4)         = 4
[pid 21025] close(3)                    = 0
[pid 21025] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21025] write(1, "executing program\n", 18executing program
) = 18
[pid 21025] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21025] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21025] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21025] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21025] exit_group(0)               = ?
[pid 21025] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21025, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20179", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20179", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20179/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20179/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20179/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20179")                        = 0
mkdir("./20180", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21026 attached
, child_tidptr=0x5555589fe650) = 21026
[pid 21026] set_robust_list(0x5555589fe660, 24) = 0
[pid 21026] chdir("./20180")            = 0
[pid 21026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21026] setpgid(0, 0)               = 0
[pid 21026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21026] write(3, "1000", 4)         = 4
[pid 21026] close(3)                    = 0
[pid 21026] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21026] write(1, "executing program\n", 18executing program
) = 18
[pid 21026] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21026] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21026] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21026] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21026] exit_group(0)               = ?
[pid 21026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20180", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20180", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20180/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20180/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20180/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20180")                        = 0
mkdir("./20181", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21027
./strace-static-x86_64: Process 21027 attached
[pid 21027] set_robust_list(0x5555589fe660, 24) = 0
[pid 21027] chdir("./20181")            = 0
[pid 21027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21027] setpgid(0, 0)               = 0
[pid 21027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21027] write(3, "1000", 4)         = 4
[pid 21027] close(3)                    = 0
[pid 21027] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21027] write(1, "executing program\n", 18executing program
) = 18
[pid 21027] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21027] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21027] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21027] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21027] exit_group(0)               = ?
[pid 21027] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21027, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20181", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20181", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20181/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20181/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20181/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20181")                        = 0
mkdir("./20182", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21028
./strace-static-x86_64: Process 21028 attached
[pid 21028] set_robust_list(0x5555589fe660, 24) = 0
[pid 21028] chdir("./20182")            = 0
[pid 21028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21028] setpgid(0, 0)               = 0
[pid 21028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21028] write(3, "1000", 4)         = 4
[pid 21028] close(3)                    = 0
[pid 21028] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21028] write(1, "executing program\n", 18executing program
) = 18
[pid 21028] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21028] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21028] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21028] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21028] exit_group(0)               = ?
[pid 21028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20182", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20182", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20182/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20182/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20182/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20182")                        = 0
mkdir("./20183", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21029
./strace-static-x86_64: Process 21029 attached
[pid 21029] set_robust_list(0x5555589fe660, 24) = 0
[pid 21029] chdir("./20183")            = 0
[pid 21029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21029] setpgid(0, 0)               = 0
[pid 21029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21029] write(3, "1000", 4)         = 4
[pid 21029] close(3)                    = 0
[pid 21029] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21029] write(1, "executing program\n", 18executing program
) = 18
[pid 21029] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21029] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21029] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21029] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21029] exit_group(0)               = ?
[pid 21029] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21029, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20183", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20183", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20183/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20183/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20183/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20183")                        = 0
mkdir("./20184", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21030 attached
, child_tidptr=0x5555589fe650) = 21030
[pid 21030] set_robust_list(0x5555589fe660, 24) = 0
[pid 21030] chdir("./20184")            = 0
[pid 21030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21030] setpgid(0, 0)               = 0
[pid 21030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21030] write(3, "1000", 4)         = 4
[pid 21030] close(3)                    = 0
[pid 21030] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21030] write(1, "executing program\n", 18executing program
) = 18
[pid 21030] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21030] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21030] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21030] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21030] exit_group(0)               = ?
[pid 21030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20184", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20184", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20184/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20184/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20184/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20184")                        = 0
mkdir("./20185", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21031
./strace-static-x86_64: Process 21031 attached
[pid 21031] set_robust_list(0x5555589fe660, 24) = 0
[pid 21031] chdir("./20185")            = 0
[pid 21031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21031] setpgid(0, 0)               = 0
[pid 21031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21031] write(3, "1000", 4)         = 4
[pid 21031] close(3)                    = 0
[pid 21031] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21031] write(1, "executing program\n", 18executing program
) = 18
[pid 21031] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21031] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21031] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21031] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21031] exit_group(0)               = ?
[pid 21031] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21031, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20185", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20185", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20185/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20185/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20185/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20185")                        = 0
mkdir("./20186", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21032 attached
, child_tidptr=0x5555589fe650) = 21032
[pid 21032] set_robust_list(0x5555589fe660, 24) = 0
[pid 21032] chdir("./20186")            = 0
[pid 21032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21032] setpgid(0, 0)               = 0
[pid 21032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21032] write(3, "1000", 4)         = 4
[pid 21032] close(3)                    = 0
[pid 21032] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21032] write(1, "executing program\n", 18executing program
) = 18
[pid 21032] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21032] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21032] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21032] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21032] exit_group(0)               = ?
[pid 21032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20186", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20186", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20186/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20186/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20186/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20186")                        = 0
mkdir("./20187", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21033 attached
, child_tidptr=0x5555589fe650) = 21033
[pid 21033] set_robust_list(0x5555589fe660, 24) = 0
[pid 21033] chdir("./20187")            = 0
[pid 21033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21033] setpgid(0, 0)               = 0
[pid 21033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21033] write(3, "1000", 4)         = 4
[pid 21033] close(3)                    = 0
[pid 21033] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21033] write(1, "executing program\n", 18executing program
) = 18
[pid 21033] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21033] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21033] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21033] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21033] exit_group(0)               = ?
[pid 21033] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21033, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20187", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20187", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20187/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20187/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20187/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20187")                        = 0
mkdir("./20188", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21034 attached
, child_tidptr=0x5555589fe650) = 21034
[pid 21034] set_robust_list(0x5555589fe660, 24) = 0
[pid 21034] chdir("./20188")            = 0
[pid 21034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21034] setpgid(0, 0)               = 0
[pid 21034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21034] write(3, "1000", 4)         = 4
[pid 21034] close(3)                    = 0
[pid 21034] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21034] write(1, "executing program\n", 18executing program
) = 18
[pid 21034] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21034] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21034] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21034] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21034] exit_group(0)               = ?
[pid 21034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20188", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20188", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20188/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20188/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20188/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20188")                        = 0
mkdir("./20189", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21035
./strace-static-x86_64: Process 21035 attached
[pid 21035] set_robust_list(0x5555589fe660, 24) = 0
[pid 21035] chdir("./20189")            = 0
[pid 21035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21035] setpgid(0, 0)               = 0
[pid 21035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21035] write(3, "1000", 4)         = 4
[pid 21035] close(3)                    = 0
[pid 21035] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21035] write(1, "executing program\n", 18executing program
) = 18
[pid 21035] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21035] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21035] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21035] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21035] exit_group(0)               = ?
[pid 21035] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21035, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20189", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20189", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20189/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20189/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20189/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20189")                        = 0
mkdir("./20190", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21036 attached
, child_tidptr=0x5555589fe650) = 21036
[pid 21036] set_robust_list(0x5555589fe660, 24) = 0
[pid 21036] chdir("./20190")            = 0
[pid 21036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21036] setpgid(0, 0)               = 0
[pid 21036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21036] write(3, "1000", 4)         = 4
[pid 21036] close(3)                    = 0
[pid 21036] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21036] write(1, "executing program\n", 18executing program
) = 18
[pid 21036] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21036] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21036] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21036] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21036] exit_group(0)               = ?
[pid 21036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20190", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20190", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20190/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20190/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20190/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20190")                        = 0
mkdir("./20191", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21037
./strace-static-x86_64: Process 21037 attached
[pid 21037] set_robust_list(0x5555589fe660, 24) = 0
[pid 21037] chdir("./20191")            = 0
[pid 21037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21037] setpgid(0, 0)               = 0
[pid 21037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21037] write(3, "1000", 4)         = 4
[pid 21037] close(3)                    = 0
[pid 21037] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21037] write(1, "executing program\n", 18executing program
) = 18
[pid 21037] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21037] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21037] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21037] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21037] exit_group(0)               = ?
[pid 21037] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21037, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20191", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20191", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20191/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20191/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20191/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20191")                        = 0
mkdir("./20192", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21038
./strace-static-x86_64: Process 21038 attached
[pid 21038] set_robust_list(0x5555589fe660, 24) = 0
[pid 21038] chdir("./20192")            = 0
[pid 21038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21038] setpgid(0, 0)               = 0
[pid 21038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21038] write(3, "1000", 4)         = 4
[pid 21038] close(3)                    = 0
[pid 21038] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21038] write(1, "executing program\n", 18executing program
) = 18
[pid 21038] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21038] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21038] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21038] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21038] exit_group(0)               = ?
[pid 21038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20192", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20192", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20192/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20192/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20192/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20192")                        = 0
mkdir("./20193", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21039
./strace-static-x86_64: Process 21039 attached
[pid 21039] set_robust_list(0x5555589fe660, 24) = 0
[pid 21039] chdir("./20193")            = 0
[pid 21039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21039] setpgid(0, 0)               = 0
[pid 21039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21039] write(3, "1000", 4)         = 4
[pid 21039] close(3)                    = 0
[pid 21039] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21039] write(1, "executing program\n", 18executing program
) = 18
[pid 21039] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21039] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21039] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21039] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21039] exit_group(0)               = ?
[pid 21039] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21039, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20193", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20193", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20193/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20193/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20193/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20193")                        = 0
mkdir("./20194", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21040 attached
, child_tidptr=0x5555589fe650) = 21040
[pid 21040] set_robust_list(0x5555589fe660, 24) = 0
[pid 21040] chdir("./20194")            = 0
[pid 21040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21040] setpgid(0, 0)               = 0
[pid 21040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21040] write(3, "1000", 4)         = 4
[pid 21040] close(3)                    = 0
[pid 21040] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21040] write(1, "executing program\n", 18executing program
) = 18
[pid 21040] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21040] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21040] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21040] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21040] exit_group(0)               = ?
[pid 21040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20194", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20194", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20194/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20194/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20194/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20194")                        = 0
mkdir("./20195", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21041 attached
, child_tidptr=0x5555589fe650) = 21041
[pid 21041] set_robust_list(0x5555589fe660, 24) = 0
[pid 21041] chdir("./20195")            = 0
[pid 21041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21041] setpgid(0, 0)               = 0
[pid 21041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21041] write(3, "1000", 4)         = 4
[pid 21041] close(3)                    = 0
[pid 21041] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21041] write(1, "executing program\n", 18executing program
) = 18
[pid 21041] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21041] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21041] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21041] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21041] exit_group(0)               = ?
[pid 21041] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21041, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20195", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20195", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20195/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20195/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20195/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20195")                        = 0
mkdir("./20196", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21042 attached
, child_tidptr=0x5555589fe650) = 21042
[pid 21042] set_robust_list(0x5555589fe660, 24) = 0
[pid 21042] chdir("./20196")            = 0
[pid 21042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21042] setpgid(0, 0)               = 0
[pid 21042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21042] write(3, "1000", 4)         = 4
[pid 21042] close(3)                    = 0
[pid 21042] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21042] write(1, "executing program\n", 18) = 18
[pid 21042] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21042] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21042] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21042] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21042] exit_group(0)               = ?
[pid 21042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20196", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20196", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20196/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20196/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20196/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20196")                        = 0
mkdir("./20197", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21043 attached
, child_tidptr=0x5555589fe650) = 21043
[pid 21043] set_robust_list(0x5555589fe660, 24) = 0
[pid 21043] chdir("./20197")            = 0
[pid 21043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21043] setpgid(0, 0)               = 0
[pid 21043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21043] write(3, "1000", 4)         = 4
[pid 21043] close(3)                    = 0
[pid 21043] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21043] write(1, "executing program\n", 18executing program
) = 18
[pid 21043] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21043] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21043] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21043] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21043] exit_group(0)               = ?
[pid 21043] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21043, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20197", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20197", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20197/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20197/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20197/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20197")                        = 0
mkdir("./20198", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21044 attached
 <unfinished ...>
[pid 21044] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21044
[pid 21044] chdir("./20198")            = 0
[pid 21044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21044] setpgid(0, 0)               = 0
[pid 21044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21044] write(3, "1000", 4)         = 4
[pid 21044] close(3)                    = 0
[pid 21044] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21044] write(1, "executing program\n", 18executing program
) = 18
[pid 21044] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21044] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21044] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21044] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21044] exit_group(0)               = ?
[pid 21044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20198", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20198", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20198/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20198/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20198/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20198")                        = 0
mkdir("./20199", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21045
./strace-static-x86_64: Process 21045 attached
[pid 21045] set_robust_list(0x5555589fe660, 24) = 0
[pid 21045] chdir("./20199")            = 0
[pid 21045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21045] setpgid(0, 0)               = 0
[pid 21045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21045] write(3, "1000", 4)         = 4
[pid 21045] close(3)                    = 0
[pid 21045] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21045] write(1, "executing program\n", 18executing program
) = 18
[pid 21045] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21045] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21045] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21045] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21045] exit_group(0)               = ?
[pid 21045] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21045, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20199", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20199", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20199/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20199/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20199/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20199")                        = 0
mkdir("./20200", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21046 attached
, child_tidptr=0x5555589fe650) = 21046
[pid 21046] set_robust_list(0x5555589fe660, 24) = 0
[pid 21046] chdir("./20200")            = 0
[pid 21046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21046] setpgid(0, 0)               = 0
[pid 21046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21046] write(3, "1000", 4)         = 4
[pid 21046] close(3)                    = 0
[pid 21046] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21046] write(1, "executing program\n", 18executing program
) = 18
[pid 21046] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21046] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21046] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21046] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21046] exit_group(0)               = ?
[pid 21046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20200", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20200", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20200/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20200/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20200/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20200")                        = 0
mkdir("./20201", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21047 attached
, child_tidptr=0x5555589fe650) = 21047
[pid 21047] set_robust_list(0x5555589fe660, 24) = 0
[pid 21047] chdir("./20201")            = 0
[pid 21047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21047] setpgid(0, 0)               = 0
[pid 21047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21047] write(3, "1000", 4)         = 4
[pid 21047] close(3)                    = 0
[pid 21047] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21047] write(1, "executing program\n", 18executing program
) = 18
[pid 21047] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21047] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21047] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21047] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21047] exit_group(0)               = ?
[pid 21047] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21047, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20201", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20201", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20201/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20201/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20201/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20201")                        = 0
mkdir("./20202", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21048 attached
, child_tidptr=0x5555589fe650) = 21048
[pid 21048] set_robust_list(0x5555589fe660, 24) = 0
[pid 21048] chdir("./20202")            = 0
[pid 21048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21048] setpgid(0, 0)               = 0
[pid 21048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21048] write(3, "1000", 4)         = 4
[pid 21048] close(3)                    = 0
[pid 21048] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21048] write(1, "executing program\n", 18) = 18
[pid 21048] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21048] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21048] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21048] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21048] exit_group(0)               = ?
[pid 21048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20202", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20202", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20202/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20202/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20202/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20202")                        = 0
mkdir("./20203", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21049
./strace-static-x86_64: Process 21049 attached
[pid 21049] set_robust_list(0x5555589fe660, 24) = 0
[pid 21049] chdir("./20203")            = 0
[pid 21049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21049] setpgid(0, 0)               = 0
[pid 21049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21049] write(3, "1000", 4)         = 4
[pid 21049] close(3)                    = 0
[pid 21049] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21049] write(1, "executing program\n", 18) = 18
[pid 21049] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21049] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21049] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21049] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21049] exit_group(0)               = ?
[pid 21049] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21049, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20203", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20203", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20203/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20203/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20203/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20203")                        = 0
mkdir("./20204", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21050
./strace-static-x86_64: Process 21050 attached
[pid 21050] set_robust_list(0x5555589fe660, 24) = 0
[pid 21050] chdir("./20204")            = 0
[pid 21050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21050] setpgid(0, 0)               = 0
[pid 21050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21050] write(3, "1000", 4)         = 4
[pid 21050] close(3)                    = 0
[pid 21050] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21050] write(1, "executing program\n", 18executing program
) = 18
[pid 21050] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21050] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21050] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21050] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21050] exit_group(0)               = ?
[pid 21050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20204", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20204", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20204/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20204/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20204/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20204")                        = 0
mkdir("./20205", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21051 attached
, child_tidptr=0x5555589fe650) = 21051
[pid 21051] set_robust_list(0x5555589fe660, 24) = 0
[pid 21051] chdir("./20205")            = 0
[pid 21051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21051] setpgid(0, 0)               = 0
[pid 21051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21051] write(3, "1000", 4)         = 4
[pid 21051] close(3)                    = 0
[pid 21051] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21051] write(1, "executing program\n", 18executing program
) = 18
[pid 21051] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21051] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21051] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21051] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21051] exit_group(0)               = ?
[pid 21051] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21051, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20205", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20205", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20205/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20205/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20205/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20205")                        = 0
mkdir("./20206", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21052
./strace-static-x86_64: Process 21052 attached
[pid 21052] set_robust_list(0x5555589fe660, 24) = 0
[pid 21052] chdir("./20206")            = 0
[pid 21052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21052] setpgid(0, 0)               = 0
[pid 21052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21052] write(3, "1000", 4)         = 4
[pid 21052] close(3)                    = 0
[pid 21052] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21052] write(1, "executing program\n", 18executing program
) = 18
[pid 21052] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21052] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21052] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21052] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21052] exit_group(0)               = ?
[pid 21052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20206", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20206", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20206/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20206/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20206/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20206")                        = 0
mkdir("./20207", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21054 attached
, child_tidptr=0x5555589fe650) = 21054
[pid 21054] set_robust_list(0x5555589fe660, 24) = 0
[pid 21054] chdir("./20207")            = 0
[pid 21054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21054] setpgid(0, 0)               = 0
[pid 21054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21054] write(3, "1000", 4)         = 4
[pid 21054] close(3)                    = 0
[pid 21054] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21054] write(1, "executing program\n", 18) = 18
[pid 21054] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21054] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21054] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21054] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21054] exit_group(0)               = ?
[pid 21054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20207", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20207", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20207/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20207/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20207/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20207")                        = 0
mkdir("./20208", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21055
./strace-static-x86_64: Process 21055 attached
[pid 21055] set_robust_list(0x5555589fe660, 24) = 0
[pid 21055] chdir("./20208")            = 0
[pid 21055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21055] setpgid(0, 0)               = 0
[pid 21055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21055] write(3, "1000", 4)         = 4
[pid 21055] close(3)                    = 0
[pid 21055] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21055] write(1, "executing program\n", 18) = 18
[pid 21055] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21055] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21055] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21055] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21055] exit_group(0)               = ?
[pid 21055] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21055, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20208", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20208", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20208/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20208/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20208/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20208")                        = 0
mkdir("./20209", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21056 attached
, child_tidptr=0x5555589fe650) = 21056
[pid 21056] set_robust_list(0x5555589fe660, 24) = 0
[pid 21056] chdir("./20209")            = 0
[pid 21056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21056] setpgid(0, 0)               = 0
[pid 21056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21056] write(3, "1000", 4)         = 4
[pid 21056] close(3)                    = 0
[pid 21056] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21056] write(1, "executing program\n", 18executing program
) = 18
[pid 21056] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21056] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21056] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21056] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21056] exit_group(0)               = ?
[pid 21056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20209", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20209", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20209/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20209/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20209/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20209")                        = 0
mkdir("./20210", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21057
./strace-static-x86_64: Process 21057 attached
[pid 21057] set_robust_list(0x5555589fe660, 24) = 0
[pid 21057] chdir("./20210")            = 0
[pid 21057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21057] setpgid(0, 0)               = 0
[pid 21057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21057] write(3, "1000", 4)         = 4
[pid 21057] close(3)                    = 0
[pid 21057] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21057] write(1, "executing program\n", 18executing program
) = 18
[pid 21057] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21057] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21057] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21057] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21057] exit_group(0)               = ?
[pid 21057] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21057, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20210", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20210", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20210/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20210/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20210/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20210")                        = 0
mkdir("./20211", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21058
./strace-static-x86_64: Process 21058 attached
[pid 21058] set_robust_list(0x5555589fe660, 24) = 0
[pid 21058] chdir("./20211")            = 0
[pid 21058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21058] setpgid(0, 0)               = 0
[pid 21058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21058] write(3, "1000", 4)         = 4
[pid 21058] close(3)                    = 0
[pid 21058] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21058] write(1, "executing program\n", 18executing program
) = 18
[pid 21058] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21058] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21058] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21058] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21058] exit_group(0)               = ?
[pid 21058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20211", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20211", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20211/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20211/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20211/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20211")                        = 0
mkdir("./20212", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21059
./strace-static-x86_64: Process 21059 attached
[pid 21059] set_robust_list(0x5555589fe660, 24) = 0
[pid 21059] chdir("./20212")            = 0
[pid 21059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21059] setpgid(0, 0)               = 0
[pid 21059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21059] write(3, "1000", 4)         = 4
[pid 21059] close(3)                    = 0
[pid 21059] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21059] write(1, "executing program\n", 18executing program
) = 18
[pid 21059] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21059] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21059] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21059] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21059] exit_group(0)               = ?
[pid 21059] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21059, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20212", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20212", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20212/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20212/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20212/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20212")                        = 0
mkdir("./20213", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21060
./strace-static-x86_64: Process 21060 attached
[pid 21060] set_robust_list(0x5555589fe660, 24) = 0
[pid 21060] chdir("./20213")            = 0
[pid 21060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21060] setpgid(0, 0)               = 0
[pid 21060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21060] write(3, "1000", 4)         = 4
[pid 21060] close(3)                    = 0
[pid 21060] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21060] write(1, "executing program\n", 18executing program
) = 18
[pid 21060] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21060] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21060] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21060] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21060] exit_group(0)               = ?
[pid 21060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20213", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20213", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20213/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20213/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20213/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20213")                        = 0
mkdir("./20214", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21061 attached
, child_tidptr=0x5555589fe650) = 21061
[pid 21061] set_robust_list(0x5555589fe660, 24) = 0
[pid 21061] chdir("./20214")            = 0
[pid 21061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21061] setpgid(0, 0)               = 0
[pid 21061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21061] write(3, "1000", 4)         = 4
[pid 21061] close(3)                    = 0
[pid 21061] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21061] write(1, "executing program\n", 18executing program
) = 18
[pid 21061] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21061] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21061] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21061] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21061] exit_group(0)               = ?
[pid 21061] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21061, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20214", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20214", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20214/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20214/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20214/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20214")                        = 0
mkdir("./20215", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21062
./strace-static-x86_64: Process 21062 attached
[pid 21062] set_robust_list(0x5555589fe660, 24) = 0
[pid 21062] chdir("./20215")            = 0
[pid 21062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21062] setpgid(0, 0)               = 0
[pid 21062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21062] write(3, "1000", 4)         = 4
[pid 21062] close(3)                    = 0
[pid 21062] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21062] write(1, "executing program\n", 18) = 18
[pid 21062] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21062] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21062] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21062] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21062] exit_group(0)               = ?
[pid 21062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20215", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20215", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20215/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20215/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20215/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20215")                        = 0
mkdir("./20216", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21063
./strace-static-x86_64: Process 21063 attached
[pid 21063] set_robust_list(0x5555589fe660, 24) = 0
[pid 21063] chdir("./20216")            = 0
[pid 21063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21063] setpgid(0, 0)               = 0
[pid 21063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21063] write(3, "1000", 4)         = 4
[pid 21063] close(3)                    = 0
[pid 21063] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21063] write(1, "executing program\n", 18) = 18
[pid 21063] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21063] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21063] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21063] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21063] exit_group(0)               = ?
[pid 21063] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21063, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20216", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20216", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20216/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20216/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20216/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20216")                        = 0
mkdir("./20217", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21064
./strace-static-x86_64: Process 21064 attached
[pid 21064] set_robust_list(0x5555589fe660, 24) = 0
[pid 21064] chdir("./20217")            = 0
[pid 21064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21064] setpgid(0, 0)               = 0
[pid 21064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21064] write(3, "1000", 4)         = 4
[pid 21064] close(3)                    = 0
[pid 21064] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21064] write(1, "executing program\n", 18) = 18
[pid 21064] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21064] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21064] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21064] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21064] exit_group(0)               = ?
[pid 21064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20217", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20217", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20217/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20217/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20217/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20217")                        = 0
mkdir("./20218", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21065
./strace-static-x86_64: Process 21065 attached
[pid 21065] set_robust_list(0x5555589fe660, 24) = 0
[pid 21065] chdir("./20218")            = 0
[pid 21065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21065] setpgid(0, 0)               = 0
[pid 21065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21065] write(3, "1000", 4)         = 4
[pid 21065] close(3)                    = 0
[pid 21065] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21065] write(1, "executing program\n", 18executing program
) = 18
[pid 21065] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21065] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21065] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21065] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21065] exit_group(0)               = ?
[pid 21065] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21065, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20218", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20218", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20218/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20218/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20218/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20218")                        = 0
mkdir("./20219", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21066
./strace-static-x86_64: Process 21066 attached
[pid 21066] set_robust_list(0x5555589fe660, 24) = 0
[pid 21066] chdir("./20219")            = 0
[pid 21066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21066] setpgid(0, 0)               = 0
[pid 21066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21066] write(3, "1000", 4)         = 4
[pid 21066] close(3)                    = 0
[pid 21066] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21066] write(1, "executing program\n", 18executing program
) = 18
[pid 21066] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21066] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21066] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21066] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21066] exit_group(0)               = ?
[pid 21066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20219", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20219", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20219/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20219/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20219/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20219")                        = 0
mkdir("./20220", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21067
./strace-static-x86_64: Process 21067 attached
[pid 21067] set_robust_list(0x5555589fe660, 24) = 0
[pid 21067] chdir("./20220")            = 0
[pid 21067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21067] setpgid(0, 0)               = 0
[pid 21067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21067] write(3, "1000", 4)         = 4
[pid 21067] close(3)                    = 0
[pid 21067] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21067] write(1, "executing program\n", 18executing program
) = 18
[pid 21067] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21067] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21067] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21067] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21067] exit_group(0)               = ?
[pid 21067] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21067, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20220", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20220", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20220/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20220/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20220/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20220")                        = 0
mkdir("./20221", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21068 attached
, child_tidptr=0x5555589fe650) = 21068
[pid 21068] set_robust_list(0x5555589fe660, 24) = 0
[pid 21068] chdir("./20221")            = 0
[pid 21068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21068] setpgid(0, 0)               = 0
[pid 21068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21068] write(3, "1000", 4)         = 4
[pid 21068] close(3)                    = 0
[pid 21068] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21068] write(1, "executing program\n", 18executing program
) = 18
[pid 21068] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21068] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21068] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21068] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21068] exit_group(0)               = ?
[pid 21068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20221", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20221", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20221/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20221/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20221/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20221")                        = 0
mkdir("./20222", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21069
./strace-static-x86_64: Process 21069 attached
[pid 21069] set_robust_list(0x5555589fe660, 24) = 0
[pid 21069] chdir("./20222")            = 0
[pid 21069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21069] setpgid(0, 0)               = 0
[pid 21069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21069] write(3, "1000", 4)         = 4
[pid 21069] close(3)                    = 0
[pid 21069] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21069] write(1, "executing program\n", 18executing program
) = 18
[pid 21069] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21069] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21069] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21069] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21069] exit_group(0)               = ?
[pid 21069] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21069, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20222", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20222", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20222/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20222/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20222/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20222")                        = 0
mkdir("./20223", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21070
./strace-static-x86_64: Process 21070 attached
[pid 21070] set_robust_list(0x5555589fe660, 24) = 0
[pid 21070] chdir("./20223")            = 0
[pid 21070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21070] setpgid(0, 0)               = 0
[pid 21070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21070] write(3, "1000", 4)         = 4
[pid 21070] close(3)                    = 0
[pid 21070] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21070] write(1, "executing program\n", 18executing program
) = 18
[pid 21070] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21070] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21070] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21070] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21070] exit_group(0)               = ?
[pid 21070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20223", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20223", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20223/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20223/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20223/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20223")                        = 0
mkdir("./20224", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21071 attached
, child_tidptr=0x5555589fe650) = 21071
[pid 21071] set_robust_list(0x5555589fe660, 24) = 0
[pid 21071] chdir("./20224")            = 0
[pid 21071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21071] setpgid(0, 0)               = 0
[pid 21071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21071] write(3, "1000", 4)         = 4
[pid 21071] close(3)                    = 0
[pid 21071] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21071] write(1, "executing program\n", 18executing program
) = 18
[pid 21071] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21071] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21071] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21071] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21071] exit_group(0)               = ?
[pid 21071] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21071, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20224", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20224", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20224/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20224/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20224/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20224")                        = 0
mkdir("./20225", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21072 attached
, child_tidptr=0x5555589fe650) = 21072
[pid 21072] set_robust_list(0x5555589fe660, 24) = 0
[pid 21072] chdir("./20225")            = 0
[pid 21072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21072] setpgid(0, 0)               = 0
[pid 21072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21072] write(3, "1000", 4)         = 4
[pid 21072] close(3)                    = 0
[pid 21072] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21072] write(1, "executing program\n", 18executing program
) = 18
[pid 21072] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21072] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21072] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21072] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21072] exit_group(0)               = ?
[pid 21072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20225", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20225", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20225/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20225/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20225/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20225")                        = 0
mkdir("./20226", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21073 attached
, child_tidptr=0x5555589fe650) = 21073
[pid 21073] set_robust_list(0x5555589fe660, 24) = 0
[pid 21073] chdir("./20226")            = 0
[pid 21073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21073] setpgid(0, 0)               = 0
[pid 21073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21073] write(3, "1000", 4)         = 4
[pid 21073] close(3)                    = 0
[pid 21073] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21073] write(1, "executing program\n", 18executing program
) = 18
[pid 21073] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21073] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21073] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21073] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21073] exit_group(0)               = ?
[pid 21073] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21073, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20226", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20226", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20226/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20226/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20226/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20226")                        = 0
mkdir("./20227", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21074 attached
, child_tidptr=0x5555589fe650) = 21074
[pid 21074] set_robust_list(0x5555589fe660, 24) = 0
[pid 21074] chdir("./20227")            = 0
[pid 21074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21074] setpgid(0, 0)               = 0
[pid 21074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21074] write(3, "1000", 4)         = 4
[pid 21074] close(3)                    = 0
[pid 21074] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21074] write(1, "executing program\n", 18executing program
) = 18
[pid 21074] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21074] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21074] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21074] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21074] exit_group(0)               = ?
[pid 21074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20227", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20227", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20227/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20227/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20227/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20227")                        = 0
mkdir("./20228", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21075
./strace-static-x86_64: Process 21075 attached
[pid 21075] set_robust_list(0x5555589fe660, 24) = 0
[pid 21075] chdir("./20228")            = 0
[pid 21075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21075] setpgid(0, 0)               = 0
[pid 21075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21075] write(3, "1000", 4)         = 4
[pid 21075] close(3)                    = 0
[pid 21075] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21075] write(1, "executing program\n", 18executing program
) = 18
[pid 21075] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21075] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21075] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21075] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21075] exit_group(0)               = ?
[pid 21075] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21075, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20228", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20228", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20228/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20228/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20228/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20228")                        = 0
mkdir("./20229", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21076
./strace-static-x86_64: Process 21076 attached
[pid 21076] set_robust_list(0x5555589fe660, 24) = 0
[pid 21076] chdir("./20229")            = 0
[pid 21076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21076] setpgid(0, 0)               = 0
[pid 21076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21076] write(3, "1000", 4)         = 4
[pid 21076] close(3)                    = 0
[pid 21076] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21076] write(1, "executing program\n", 18) = 18
[pid 21076] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21076] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21076] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21076] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21076] exit_group(0)               = ?
[pid 21076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20229", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20229", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20229/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20229/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20229/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20229")                        = 0
mkdir("./20230", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21077
./strace-static-x86_64: Process 21077 attached
[pid 21077] set_robust_list(0x5555589fe660, 24) = 0
[pid 21077] chdir("./20230")            = 0
[pid 21077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21077] setpgid(0, 0)               = 0
[pid 21077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21077] write(3, "1000", 4)         = 4
[pid 21077] close(3)                    = 0
[pid 21077] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21077] write(1, "executing program\n", 18) = 18
[pid 21077] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21077] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21077] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21077] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21077] exit_group(0)               = ?
[pid 21077] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21077, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20230", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20230", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20230/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20230/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20230/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20230")                        = 0
mkdir("./20231", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21078
./strace-static-x86_64: Process 21078 attached
[pid 21078] set_robust_list(0x5555589fe660, 24) = 0
[pid 21078] chdir("./20231")            = 0
[pid 21078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21078] setpgid(0, 0)               = 0
[pid 21078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21078] write(3, "1000", 4)         = 4
[pid 21078] close(3)                    = 0
[pid 21078] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21078] write(1, "executing program\n", 18) = 18
[pid 21078] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21078] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21078] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21078] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21078] exit_group(0)               = ?
[pid 21078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20231", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20231", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20231/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20231/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20231/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20231")                        = 0
mkdir("./20232", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21079
./strace-static-x86_64: Process 21079 attached
[pid 21079] set_robust_list(0x5555589fe660, 24) = 0
[pid 21079] chdir("./20232")            = 0
[pid 21079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21079] setpgid(0, 0)               = 0
[pid 21079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21079] write(3, "1000", 4)         = 4
[pid 21079] close(3)                    = 0
[pid 21079] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21079] write(1, "executing program\n", 18executing program
) = 18
[pid 21079] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21079] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21079] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21079] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21079] exit_group(0)               = ?
[pid 21079] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21079, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20232", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20232", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20232/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20232/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20232/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20232")                        = 0
mkdir("./20233", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21080 attached
, child_tidptr=0x5555589fe650) = 21080
[pid 21080] set_robust_list(0x5555589fe660, 24) = 0
[pid 21080] chdir("./20233")            = 0
[pid 21080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21080] setpgid(0, 0)               = 0
[pid 21080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21080] write(3, "1000", 4)         = 4
[pid 21080] close(3)                    = 0
[pid 21080] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21080] write(1, "executing program\n", 18executing program
) = 18
[pid 21080] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21080] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21080] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21080] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21080] exit_group(0)               = ?
[pid 21080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20233", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20233", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20233/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20233/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20233/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20233")                        = 0
mkdir("./20234", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21081
./strace-static-x86_64: Process 21081 attached
[pid 21081] set_robust_list(0x5555589fe660, 24) = 0
[pid 21081] chdir("./20234")            = 0
[pid 21081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21081] setpgid(0, 0)               = 0
[pid 21081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21081] write(3, "1000", 4)         = 4
[pid 21081] close(3)                    = 0
[pid 21081] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21081] write(1, "executing program\n", 18executing program
) = 18
[pid 21081] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21081] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21081] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21081] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21081] exit_group(0)               = ?
[pid 21081] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21081, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20234", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20234", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20234/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20234/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20234/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20234")                        = 0
mkdir("./20235", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21082
./strace-static-x86_64: Process 21082 attached
[pid 21082] set_robust_list(0x5555589fe660, 24) = 0
[pid 21082] chdir("./20235")            = 0
[pid 21082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21082] setpgid(0, 0)               = 0
[pid 21082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21082] write(3, "1000", 4)         = 4
[pid 21082] close(3)                    = 0
[pid 21082] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21082] write(1, "executing program\n", 18) = 18
[pid 21082] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21082] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21082] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21082] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21082] exit_group(0)               = ?
[pid 21082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20235", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20235", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20235/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20235/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20235/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20235")                        = 0
mkdir("./20236", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21083
./strace-static-x86_64: Process 21083 attached
[pid 21083] set_robust_list(0x5555589fe660, 24) = 0
[pid 21083] chdir("./20236")            = 0
[pid 21083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21083] setpgid(0, 0)               = 0
[pid 21083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21083] write(3, "1000", 4)         = 4
[pid 21083] close(3)                    = 0
[pid 21083] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21083] write(1, "executing program\n", 18executing program
) = 18
[pid 21083] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21083] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21083] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21083] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21083] exit_group(0)               = ?
[pid 21083] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21083, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20236", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20236", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20236/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20236/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20236/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20236")                        = 0
mkdir("./20237", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21084 attached
, child_tidptr=0x5555589fe650) = 21084
[pid 21084] set_robust_list(0x5555589fe660, 24) = 0
[pid 21084] chdir("./20237")            = 0
[pid 21084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21084] setpgid(0, 0)               = 0
[pid 21084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21084] write(3, "1000", 4)         = 4
[pid 21084] close(3)                    = 0
[pid 21084] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21084] write(1, "executing program\n", 18executing program
) = 18
[pid 21084] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21084] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21084] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21084] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21084] exit_group(0)               = ?
[pid 21084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20237", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20237", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20237/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20237/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20237/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20237")                        = 0
mkdir("./20238", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21085
./strace-static-x86_64: Process 21085 attached
[pid 21085] set_robust_list(0x5555589fe660, 24) = 0
[pid 21085] chdir("./20238")            = 0
[pid 21085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21085] setpgid(0, 0)               = 0
[pid 21085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21085] write(3, "1000", 4)         = 4
[pid 21085] close(3)                    = 0
[pid 21085] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21085] write(1, "executing program\n", 18) = 18
[pid 21085] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21085] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21085] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21085] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21085] exit_group(0)               = ?
[pid 21085] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21085, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20238", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20238", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20238/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20238/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20238/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20238")                        = 0
mkdir("./20239", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21086
./strace-static-x86_64: Process 21086 attached
[pid 21086] set_robust_list(0x5555589fe660, 24) = 0
[pid 21086] chdir("./20239")            = 0
[pid 21086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21086] setpgid(0, 0)               = 0
[pid 21086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21086] write(3, "1000", 4)         = 4
[pid 21086] close(3)                    = 0
[pid 21086] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21086] write(1, "executing program\n", 18executing program
) = 18
[pid 21086] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21086] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21086] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21086] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21086] exit_group(0)               = ?
[pid 21086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20239", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20239", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20239/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20239/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20239/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20239")                        = 0
mkdir("./20240", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21087 attached
, child_tidptr=0x5555589fe650) = 21087
[pid 21087] set_robust_list(0x5555589fe660, 24) = 0
[pid 21087] chdir("./20240")            = 0
[pid 21087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21087] setpgid(0, 0)               = 0
[pid 21087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21087] write(3, "1000", 4)         = 4
[pid 21087] close(3)                    = 0
[pid 21087] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21087] write(1, "executing program\n", 18executing program
) = 18
[pid 21087] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21087] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21087] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21087] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21087] exit_group(0)               = ?
[pid 21087] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21087, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20240", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20240", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20240/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20240/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20240/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20240")                        = 0
mkdir("./20241", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21088 attached
, child_tidptr=0x5555589fe650) = 21088
[pid 21088] set_robust_list(0x5555589fe660, 24) = 0
[pid 21088] chdir("./20241")            = 0
[pid 21088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21088] setpgid(0, 0)               = 0
[pid 21088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21088] write(3, "1000", 4)         = 4
[pid 21088] close(3)                    = 0
[pid 21088] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21088] write(1, "executing program\n", 18executing program
) = 18
[pid 21088] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21088] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21088] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21088] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21088] exit_group(0)               = ?
[pid 21088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20241", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20241", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20241/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20241/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20241/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20241")                        = 0
mkdir("./20242", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21089 attached
, child_tidptr=0x5555589fe650) = 21089
[pid 21089] set_robust_list(0x5555589fe660, 24) = 0
[pid 21089] chdir("./20242")            = 0
[pid 21089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21089] setpgid(0, 0)               = 0
[pid 21089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21089] write(3, "1000", 4)         = 4
[pid 21089] close(3)                    = 0
[pid 21089] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21089] write(1, "executing program\n", 18executing program
) = 18
[pid 21089] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21089] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21089] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21089] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21089] exit_group(0)               = ?
[pid 21089] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21089, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20242", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20242", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20242/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20242/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20242/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20242")                        = 0
mkdir("./20243", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21090
./strace-static-x86_64: Process 21090 attached
[pid 21090] set_robust_list(0x5555589fe660, 24) = 0
[pid 21090] chdir("./20243")            = 0
[pid 21090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21090] setpgid(0, 0)               = 0
[pid 21090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21090] write(3, "1000", 4)         = 4
[pid 21090] close(3)                    = 0
[pid 21090] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21090] write(1, "executing program\n", 18) = 18
[pid 21090] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21090] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21090] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21090] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21090] exit_group(0)               = ?
[pid 21090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20243", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20243", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20243/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20243/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20243/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20243")                        = 0
mkdir("./20244", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21091
./strace-static-x86_64: Process 21091 attached
[pid 21091] set_robust_list(0x5555589fe660, 24) = 0
[pid 21091] chdir("./20244")            = 0
[pid 21091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21091] setpgid(0, 0)               = 0
[pid 21091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21091] write(3, "1000", 4)         = 4
[pid 21091] close(3)                    = 0
[pid 21091] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21091] write(1, "executing program\n", 18executing program
) = 18
[pid 21091] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21091] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21091] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21091] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21091] exit_group(0)               = ?
[pid 21091] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21091, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20244", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20244", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20244/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20244/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20244/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20244")                        = 0
mkdir("./20245", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21092 attached
, child_tidptr=0x5555589fe650) = 21092
[pid 21092] set_robust_list(0x5555589fe660, 24) = 0
[pid 21092] chdir("./20245")            = 0
[pid 21092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21092] setpgid(0, 0)               = 0
[pid 21092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21092] write(3, "1000", 4)         = 4
[pid 21092] close(3)                    = 0
[pid 21092] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21092] write(1, "executing program\n", 18) = 18
[pid 21092] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21092] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21092] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21092] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21092] exit_group(0)               = ?
[pid 21092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20245", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20245", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20245/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20245/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20245/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20245")                        = 0
mkdir("./20246", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21093
./strace-static-x86_64: Process 21093 attached
[pid 21093] set_robust_list(0x5555589fe660, 24) = 0
[pid 21093] chdir("./20246")            = 0
[pid 21093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21093] setpgid(0, 0)               = 0
[pid 21093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21093] write(3, "1000", 4)         = 4
[pid 21093] close(3)                    = 0
[pid 21093] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21093] write(1, "executing program\n", 18) = 18
[pid 21093] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21093] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21093] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21093] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21093] exit_group(0)               = ?
[pid 21093] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21093, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20246", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20246", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20246/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20246/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20246/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20246")                        = 0
mkdir("./20247", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21094
./strace-static-x86_64: Process 21094 attached
[pid 21094] set_robust_list(0x5555589fe660, 24) = 0
[pid 21094] chdir("./20247")            = 0
[pid 21094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21094] setpgid(0, 0)               = 0
[pid 21094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21094] write(3, "1000", 4)         = 4
[pid 21094] close(3)                    = 0
[pid 21094] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21094] write(1, "executing program\n", 18executing program
) = 18
[pid 21094] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21094] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21094] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21094] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21094] exit_group(0)               = ?
[pid 21094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20247", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20247", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20247/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20247/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20247/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20247")                        = 0
mkdir("./20248", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21095
./strace-static-x86_64: Process 21095 attached
[pid 21095] set_robust_list(0x5555589fe660, 24) = 0
[pid 21095] chdir("./20248")            = 0
[pid 21095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21095] setpgid(0, 0)               = 0
[pid 21095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21095] write(3, "1000", 4)         = 4
[pid 21095] close(3)                    = 0
[pid 21095] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21095] write(1, "executing program\n", 18) = 18
[pid 21095] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21095] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21095] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21095] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21095] exit_group(0)               = ?
[pid 21095] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21095, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20248", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20248", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20248/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20248/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20248/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20248")                        = 0
mkdir("./20249", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21096
./strace-static-x86_64: Process 21096 attached
[pid 21096] set_robust_list(0x5555589fe660, 24) = 0
[pid 21096] chdir("./20249")            = 0
[pid 21096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21096] setpgid(0, 0)               = 0
[pid 21096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21096] write(3, "1000", 4)         = 4
[pid 21096] close(3)                    = 0
[pid 21096] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21096] write(1, "executing program\n", 18executing program
) = 18
[pid 21096] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21096] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21096] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21096] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21096] exit_group(0)               = ?
[pid 21096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20249", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20249", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20249/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20249/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20249/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20249")                        = 0
mkdir("./20250", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21097
./strace-static-x86_64: Process 21097 attached
[pid 21097] set_robust_list(0x5555589fe660, 24) = 0
[pid 21097] chdir("./20250")            = 0
[pid 21097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21097] setpgid(0, 0)               = 0
[pid 21097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21097] write(3, "1000", 4)         = 4
[pid 21097] close(3)                    = 0
[pid 21097] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21097] write(1, "executing program\n", 18executing program
) = 18
[pid 21097] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21097] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21097] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21097] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21097] exit_group(0)               = ?
[pid 21097] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21097, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20250", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20250", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20250/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20250/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20250/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20250")                        = 0
mkdir("./20251", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21098
./strace-static-x86_64: Process 21098 attached
[pid 21098] set_robust_list(0x5555589fe660, 24) = 0
[pid 21098] chdir("./20251")            = 0
[pid 21098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21098] setpgid(0, 0)               = 0
[pid 21098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21098] write(3, "1000", 4)         = 4
[pid 21098] close(3)                    = 0
[pid 21098] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21098] write(1, "executing program\n", 18executing program
) = 18
[pid 21098] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21098] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21098] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21098] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21098] exit_group(0)               = ?
[pid 21098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20251", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20251", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20251/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20251/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20251/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20251")                        = 0
mkdir("./20252", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21099 attached
, child_tidptr=0x5555589fe650) = 21099
[pid 21099] set_robust_list(0x5555589fe660, 24) = 0
[pid 21099] chdir("./20252")            = 0
[pid 21099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21099] setpgid(0, 0)               = 0
[pid 21099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21099] write(3, "1000", 4)         = 4
[pid 21099] close(3)                    = 0
[pid 21099] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21099] write(1, "executing program\n", 18executing program
) = 18
[pid 21099] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21099] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21099] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21099] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21099] exit_group(0)               = ?
[pid 21099] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21099, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20252", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20252", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20252/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20252/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20252/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20252")                        = 0
mkdir("./20253", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21100
./strace-static-x86_64: Process 21100 attached
[pid 21100] set_robust_list(0x5555589fe660, 24) = 0
[pid 21100] chdir("./20253")            = 0
[pid 21100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21100] setpgid(0, 0)               = 0
[pid 21100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21100] write(3, "1000", 4)         = 4
[pid 21100] close(3)                    = 0
[pid 21100] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21100] write(1, "executing program\n", 18executing program
) = 18
[pid 21100] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21100] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21100] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21100] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21100] exit_group(0)               = ?
[pid 21100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20253", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20253", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20253/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20253/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20253/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20253")                        = 0
mkdir("./20254", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21101
./strace-static-x86_64: Process 21101 attached
[pid 21101] set_robust_list(0x5555589fe660, 24) = 0
[pid 21101] chdir("./20254")            = 0
[pid 21101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21101] setpgid(0, 0)               = 0
[pid 21101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21101] write(3, "1000", 4)         = 4
[pid 21101] close(3)                    = 0
[pid 21101] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21101] write(1, "executing program\n", 18executing program
) = 18
[pid 21101] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21101] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21101] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21101] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21101] exit_group(0)               = ?
[pid 21101] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21101, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20254", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20254", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20254/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20254/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20254/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20254")                        = 0
mkdir("./20255", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21102
./strace-static-x86_64: Process 21102 attached
[pid 21102] set_robust_list(0x5555589fe660, 24) = 0
[pid 21102] chdir("./20255")            = 0
[pid 21102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21102] setpgid(0, 0)               = 0
[pid 21102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21102] write(3, "1000", 4)         = 4
[pid 21102] close(3)                    = 0
[pid 21102] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21102] write(1, "executing program\n", 18executing program
) = 18
[pid 21102] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21102] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21102] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21102] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21102] exit_group(0)               = ?
[pid 21102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20255", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20255", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20255/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20255/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20255/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20255")                        = 0
mkdir("./20256", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21103
./strace-static-x86_64: Process 21103 attached
[pid 21103] set_robust_list(0x5555589fe660, 24) = 0
[pid 21103] chdir("./20256")            = 0
[pid 21103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21103] setpgid(0, 0)               = 0
[pid 21103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21103] write(3, "1000", 4)         = 4
[pid 21103] close(3)                    = 0
[pid 21103] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21103] write(1, "executing program\n", 18) = 18
[pid 21103] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21103] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21103] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21103] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21103] exit_group(0)               = ?
[pid 21103] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21103, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20256", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20256", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20256/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20256/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20256/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20256")                        = 0
mkdir("./20257", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21104 attached
, child_tidptr=0x5555589fe650) = 21104
[pid 21104] set_robust_list(0x5555589fe660, 24) = 0
[pid 21104] chdir("./20257")            = 0
[pid 21104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21104] setpgid(0, 0)               = 0
[pid 21104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21104] write(3, "1000", 4)         = 4
[pid 21104] close(3)                    = 0
[pid 21104] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21104] write(1, "executing program\n", 18) = 18
[pid 21104] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21104] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21104] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21104] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21104] exit_group(0)               = ?
[pid 21104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20257", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20257", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20257/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20257/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20257/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20257")                        = 0
mkdir("./20258", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21105
./strace-static-x86_64: Process 21105 attached
[pid 21105] set_robust_list(0x5555589fe660, 24) = 0
[pid 21105] chdir("./20258")            = 0
[pid 21105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21105] setpgid(0, 0)               = 0
[pid 21105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21105] write(3, "1000", 4)         = 4
[pid 21105] close(3)                    = 0
[pid 21105] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21105] write(1, "executing program\n", 18) = 18
[pid 21105] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21105] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21105] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21105] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21105] exit_group(0)               = ?
[pid 21105] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21105, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20258", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20258", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20258/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20258/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20258/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20258")                        = 0
mkdir("./20259", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21106 attached
, child_tidptr=0x5555589fe650) = 21106
[pid 21106] set_robust_list(0x5555589fe660, 24) = 0
[pid 21106] chdir("./20259")            = 0
[pid 21106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21106] setpgid(0, 0)               = 0
[pid 21106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21106] write(3, "1000", 4)         = 4
[pid 21106] close(3)                    = 0
[pid 21106] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21106] write(1, "executing program\n", 18) = 18
[pid 21106] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21106] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21106] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21106] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21106] exit_group(0)               = ?
[pid 21106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20259", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20259", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20259/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20259/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20259/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20259")                        = 0
mkdir("./20260", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21107
./strace-static-x86_64: Process 21107 attached
[pid 21107] set_robust_list(0x5555589fe660, 24) = 0
[pid 21107] chdir("./20260")            = 0
[pid 21107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21107] setpgid(0, 0)               = 0
[pid 21107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21107] write(3, "1000", 4)         = 4
[pid 21107] close(3)                    = 0
[pid 21107] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21107] write(1, "executing program\n", 18) = 18
[pid 21107] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21107] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21107] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21107] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21107] exit_group(0)               = ?
[pid 21107] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21107, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20260", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20260", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20260/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20260/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20260/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20260")                        = 0
mkdir("./20261", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21108
./strace-static-x86_64: Process 21108 attached
[pid 21108] set_robust_list(0x5555589fe660, 24) = 0
[pid 21108] chdir("./20261")            = 0
[pid 21108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21108] setpgid(0, 0)               = 0
[pid 21108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21108] write(3, "1000", 4)         = 4
[pid 21108] close(3)                    = 0
[pid 21108] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21108] write(1, "executing program\n", 18) = 18
[pid 21108] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21108] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21108] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21108] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21108] exit_group(0)               = ?
[pid 21108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20261", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20261", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20261/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20261/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20261/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20261")                        = 0
mkdir("./20262", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21109
./strace-static-x86_64: Process 21109 attached
[pid 21109] set_robust_list(0x5555589fe660, 24) = 0
[pid 21109] chdir("./20262")            = 0
[pid 21109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21109] setpgid(0, 0)               = 0
[pid 21109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21109] write(3, "1000", 4)         = 4
[pid 21109] close(3)                    = 0
[pid 21109] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21109] write(1, "executing program\n", 18executing program
) = 18
[pid 21109] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21109] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21109] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21109] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21109] exit_group(0)               = ?
[pid 21109] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21109, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20262", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20262", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20262/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20262/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20262/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20262")                        = 0
mkdir("./20263", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21110
./strace-static-x86_64: Process 21110 attached
[pid 21110] set_robust_list(0x5555589fe660, 24) = 0
[pid 21110] chdir("./20263")            = 0
[pid 21110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21110] setpgid(0, 0)               = 0
[pid 21110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21110] write(3, "1000", 4)         = 4
[pid 21110] close(3)                    = 0
[pid 21110] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21110] write(1, "executing program\n", 18) = 18
[pid 21110] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21110] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21110] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21110] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21110] exit_group(0)               = ?
[pid 21110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20263", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20263", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20263/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20263/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20263/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20263")                        = 0
mkdir("./20264", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21111
./strace-static-x86_64: Process 21111 attached
[pid 21111] set_robust_list(0x5555589fe660, 24) = 0
[pid 21111] chdir("./20264")            = 0
[pid 21111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21111] setpgid(0, 0)               = 0
[pid 21111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21111] write(3, "1000", 4)         = 4
[pid 21111] close(3)                    = 0
[pid 21111] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21111] write(1, "executing program\n", 18executing program
) = 18
[pid 21111] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21111] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21111] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21111] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21111] exit_group(0)               = ?
[pid 21111] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21111, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20264", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20264", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20264/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20264/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20264/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20264")                        = 0
mkdir("./20265", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21112
./strace-static-x86_64: Process 21112 attached
[pid 21112] set_robust_list(0x5555589fe660, 24) = 0
[pid 21112] chdir("./20265")            = 0
[pid 21112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21112] setpgid(0, 0)               = 0
[pid 21112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21112] write(3, "1000", 4)         = 4
[pid 21112] close(3)                    = 0
[pid 21112] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21112] write(1, "executing program\n", 18executing program
) = 18
[pid 21112] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21112] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21112] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21112] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21112] exit_group(0)               = ?
[pid 21112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20265", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20265", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20265/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20265/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20265/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20265")                        = 0
mkdir("./20266", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21113
./strace-static-x86_64: Process 21113 attached
[pid 21113] set_robust_list(0x5555589fe660, 24) = 0
[pid 21113] chdir("./20266")            = 0
[pid 21113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21113] setpgid(0, 0)               = 0
[pid 21113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21113] write(3, "1000", 4)         = 4
[pid 21113] close(3)                    = 0
[pid 21113] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21113] write(1, "executing program\n", 18executing program
) = 18
[pid 21113] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21113] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21113] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21113] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21113] exit_group(0)               = ?
[pid 21113] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21113, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20266", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20266", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20266/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20266/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20266/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20266")                        = 0
mkdir("./20267", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21114
./strace-static-x86_64: Process 21114 attached
[pid 21114] set_robust_list(0x5555589fe660, 24) = 0
[pid 21114] chdir("./20267")            = 0
[pid 21114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21114] setpgid(0, 0)               = 0
[pid 21114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21114] write(3, "1000", 4)         = 4
[pid 21114] close(3)                    = 0
[pid 21114] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21114] write(1, "executing program\n", 18) = 18
[pid 21114] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21114] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21114] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21114] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21114] exit_group(0)               = ?
[pid 21114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20267", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20267", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20267/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20267/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20267/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20267")                        = 0
mkdir("./20268", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21115
./strace-static-x86_64: Process 21115 attached
[pid 21115] set_robust_list(0x5555589fe660, 24) = 0
[pid 21115] chdir("./20268")            = 0
[pid 21115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21115] setpgid(0, 0)               = 0
[pid 21115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21115] write(3, "1000", 4)         = 4
[pid 21115] close(3)                    = 0
[pid 21115] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21115] write(1, "executing program\n", 18executing program
) = 18
[pid 21115] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21115] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21115] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21115] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21115] exit_group(0)               = ?
[pid 21115] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21115, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20268", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20268", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20268/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20268/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20268/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20268")                        = 0
mkdir("./20269", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21116
./strace-static-x86_64: Process 21116 attached
[pid 21116] set_robust_list(0x5555589fe660, 24) = 0
[pid 21116] chdir("./20269")            = 0
[pid 21116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21116] setpgid(0, 0)               = 0
[pid 21116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21116] write(3, "1000", 4)         = 4
[pid 21116] close(3)                    = 0
[pid 21116] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21116] write(1, "executing program\n", 18executing program
) = 18
[pid 21116] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21116] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21116] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21116] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21116] exit_group(0)               = ?
[pid 21116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20269", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20269", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20269/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20269/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20269/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20269")                        = 0
mkdir("./20270", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21117
./strace-static-x86_64: Process 21117 attached
[pid 21117] set_robust_list(0x5555589fe660, 24) = 0
[pid 21117] chdir("./20270")            = 0
[pid 21117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21117] setpgid(0, 0)               = 0
[pid 21117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21117] write(3, "1000", 4)         = 4
[pid 21117] close(3)                    = 0
[pid 21117] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21117] write(1, "executing program\n", 18) = 18
[pid 21117] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21117] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21117] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21117] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21117] exit_group(0)               = ?
[pid 21117] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21117, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20270", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20270", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20270/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20270/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20270/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20270")                        = 0
mkdir("./20271", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21118
./strace-static-x86_64: Process 21118 attached
[pid 21118] set_robust_list(0x5555589fe660, 24) = 0
[pid 21118] chdir("./20271")            = 0
[pid 21118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21118] setpgid(0, 0)               = 0
[pid 21118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21118] write(3, "1000", 4)         = 4
[pid 21118] close(3)                    = 0
[pid 21118] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21118] write(1, "executing program\n", 18executing program
) = 18
[pid 21118] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21118] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21118] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21118] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21118] exit_group(0)               = ?
[pid 21118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20271", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20271", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20271/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20271/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20271/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20271")                        = 0
mkdir("./20272", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21119
./strace-static-x86_64: Process 21119 attached
[pid 21119] set_robust_list(0x5555589fe660, 24) = 0
[pid 21119] chdir("./20272")            = 0
[pid 21119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21119] setpgid(0, 0)               = 0
[pid 21119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21119] write(3, "1000", 4)         = 4
[pid 21119] close(3)                    = 0
[pid 21119] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21119] write(1, "executing program\n", 18executing program
) = 18
[pid 21119] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21119] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21119] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21119] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21119] exit_group(0)               = ?
[pid 21119] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21119, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20272", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20272", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20272/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20272/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20272/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20272")                        = 0
mkdir("./20273", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21120
./strace-static-x86_64: Process 21120 attached
[pid 21120] set_robust_list(0x5555589fe660, 24) = 0
[pid 21120] chdir("./20273")            = 0
[pid 21120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21120] setpgid(0, 0)               = 0
[pid 21120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21120] write(3, "1000", 4)         = 4
[pid 21120] close(3)                    = 0
[pid 21120] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21120] write(1, "executing program\n", 18) = 18
[pid 21120] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21120] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21120] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21120] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21120] exit_group(0)               = ?
[pid 21120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20273", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20273", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20273/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20273/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20273/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20273")                        = 0
mkdir("./20274", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21121 attached
 <unfinished ...>
[pid 21121] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21121
[pid 21121] chdir("./20274")            = 0
[pid 21121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21121] setpgid(0, 0)               = 0
[pid 21121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21121] write(3, "1000", 4)         = 4
[pid 21121] close(3)                    = 0
[pid 21121] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21121] write(1, "executing program\n", 18executing program
) = 18
[pid 21121] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21121] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21121] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21121] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21121] exit_group(0)               = ?
[pid 21121] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21121, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20274", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20274", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20274/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20274/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20274/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20274")                        = 0
mkdir("./20275", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21122 attached
, child_tidptr=0x5555589fe650) = 21122
[pid 21122] set_robust_list(0x5555589fe660, 24) = 0
[pid 21122] chdir("./20275")            = 0
[pid 21122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21122] setpgid(0, 0)               = 0
[pid 21122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21122] write(3, "1000", 4)         = 4
[pid 21122] close(3)                    = 0
[pid 21122] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21122] write(1, "executing program\n", 18) = 18
[pid 21122] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21122] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21122] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21122] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21122] exit_group(0)               = ?
[pid 21122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20275", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20275", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20275/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20275/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20275/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20275")                        = 0
mkdir("./20276", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21123
./strace-static-x86_64: Process 21123 attached
[pid 21123] set_robust_list(0x5555589fe660, 24) = 0
[pid 21123] chdir("./20276")            = 0
[pid 21123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21123] setpgid(0, 0)               = 0
[pid 21123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21123] write(3, "1000", 4)         = 4
[pid 21123] close(3)                    = 0
[pid 21123] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21123] write(1, "executing program\n", 18executing program
) = 18
[pid 21123] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21123] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21123] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21123] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21123] exit_group(0)               = ?
[pid 21123] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21123, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20276", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20276", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20276/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20276/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20276/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20276")                        = 0
mkdir("./20277", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21124
./strace-static-x86_64: Process 21124 attached
[pid 21124] set_robust_list(0x5555589fe660, 24) = 0
[pid 21124] chdir("./20277")            = 0
[pid 21124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21124] setpgid(0, 0)               = 0
[pid 21124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21124] write(3, "1000", 4)         = 4
[pid 21124] close(3)                    = 0
[pid 21124] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21124] write(1, "executing program\n", 18executing program
) = 18
[pid 21124] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21124] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21124] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21124] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21124] exit_group(0)               = ?
[pid 21124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20277", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20277", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20277/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20277/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20277/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20277")                        = 0
mkdir("./20278", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21126
./strace-static-x86_64: Process 21126 attached
[pid 21126] set_robust_list(0x5555589fe660, 24) = 0
[pid 21126] chdir("./20278")            = 0
[pid 21126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21126] setpgid(0, 0)               = 0
[pid 21126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21126] write(3, "1000", 4)         = 4
[pid 21126] close(3)                    = 0
[pid 21126] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21126] write(1, "executing program\n", 18) = 18
[pid 21126] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21126] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21126] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21126] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21126] exit_group(0)               = ?
[pid 21126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20278", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20278", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20278/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20278/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20278/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20278")                        = 0
mkdir("./20279", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21127 attached
 <unfinished ...>
[pid 21127] set_robust_list(0x5555589fe660, 24) = 0
[pid 21127] chdir("./20279" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21127
[pid 21127] <... chdir resumed>)        = 0
[pid 21127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21127] setpgid(0, 0)               = 0
[pid 21127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21127] write(3, "1000", 4)         = 4
[pid 21127] close(3)                    = 0
[pid 21127] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21127] write(1, "executing program\n", 18executing program
) = 18
[pid 21127] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21127] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21127] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21127] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21127] exit_group(0)               = ?
[pid 21127] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21127, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20279", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20279", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20279/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20279/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20279/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20279")                        = 0
mkdir("./20280", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21128
./strace-static-x86_64: Process 21128 attached
[pid 21128] set_robust_list(0x5555589fe660, 24) = 0
[pid 21128] chdir("./20280")            = 0
[pid 21128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21128] setpgid(0, 0)               = 0
[pid 21128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21128] write(3, "1000", 4)         = 4
[pid 21128] close(3)                    = 0
[pid 21128] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21128] write(1, "executing program\n", 18executing program
) = 18
[pid 21128] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21128] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21128] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21128] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21128] exit_group(0)               = ?
[pid 21128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20280", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20280", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20280/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20280/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20280/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20280")                        = 0
mkdir("./20281", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21129 attached
 <unfinished ...>
[pid 21129] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21129
[pid 21129] chdir("./20281")            = 0
[pid 21129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21129] setpgid(0, 0)               = 0
[pid 21129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21129] write(3, "1000", 4)         = 4
[pid 21129] close(3)                    = 0
[pid 21129] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21129] write(1, "executing program\n", 18executing program
) = 18
[pid 21129] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21129] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21129] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21129] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21129] exit_group(0)               = ?
[pid 21129] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21129, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20281", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20281", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20281/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20281/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20281/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20281")                        = 0
mkdir("./20282", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21130
./strace-static-x86_64: Process 21130 attached
[pid 21130] set_robust_list(0x5555589fe660, 24) = 0
[pid 21130] chdir("./20282")            = 0
[pid 21130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21130] setpgid(0, 0)               = 0
[pid 21130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21130] write(3, "1000", 4)         = 4
[pid 21130] close(3)                    = 0
[pid 21130] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21130] write(1, "executing program\n", 18) = 18
[pid 21130] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21130] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21130] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21130] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21130] exit_group(0)               = ?
[pid 21130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20282", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20282", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20282/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20282/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20282/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20282")                        = 0
mkdir("./20283", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21131
./strace-static-x86_64: Process 21131 attached
[pid 21131] set_robust_list(0x5555589fe660, 24) = 0
[pid 21131] chdir("./20283")            = 0
[pid 21131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21131] setpgid(0, 0)               = 0
[pid 21131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21131] write(3, "1000", 4)         = 4
[pid 21131] close(3)                    = 0
[pid 21131] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21131] write(1, "executing program\n", 18executing program
) = 18
[pid 21131] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21131] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21131] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21131] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21131] exit_group(0)               = ?
[pid 21131] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21131, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20283", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20283", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20283/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20283/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20283/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20283")                        = 0
mkdir("./20284", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21132
./strace-static-x86_64: Process 21132 attached
[pid 21132] set_robust_list(0x5555589fe660, 24) = 0
[pid 21132] chdir("./20284")            = 0
[pid 21132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21132] setpgid(0, 0)               = 0
[pid 21132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21132] write(3, "1000", 4)         = 4
[pid 21132] close(3)                    = 0
[pid 21132] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21132] write(1, "executing program\n", 18executing program
) = 18
[pid 21132] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21132] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21132] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21132] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21132] exit_group(0)               = ?
[pid 21132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21132, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20284", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20284", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20284/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20284/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20284/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20284")                        = 0
mkdir("./20285", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21133
./strace-static-x86_64: Process 21133 attached
[pid 21133] set_robust_list(0x5555589fe660, 24) = 0
[pid 21133] chdir("./20285")            = 0
[pid 21133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21133] setpgid(0, 0)               = 0
[pid 21133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21133] write(3, "1000", 4)         = 4
[pid 21133] close(3)                    = 0
[pid 21133] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21133] write(1, "executing program\n", 18executing program
) = 18
[pid 21133] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21133] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21133] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21133] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21133] exit_group(0)               = ?
[pid 21133] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21133, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20285", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20285", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20285/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20285/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20285/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20285")                        = 0
mkdir("./20286", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21134
./strace-static-x86_64: Process 21134 attached
[pid 21134] set_robust_list(0x5555589fe660, 24) = 0
[pid 21134] chdir("./20286")            = 0
[pid 21134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21134] setpgid(0, 0)               = 0
[pid 21134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21134] write(3, "1000", 4)         = 4
[pid 21134] close(3)                    = 0
[pid 21134] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21134] write(1, "executing program\n", 18executing program
) = 18
[pid 21134] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21134] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21134] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21134] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21134] exit_group(0)               = ?
[pid 21134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20286", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20286", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20286/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20286/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20286/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20286")                        = 0
mkdir("./20287", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21135
./strace-static-x86_64: Process 21135 attached
[pid 21135] set_robust_list(0x5555589fe660, 24) = 0
[pid 21135] chdir("./20287")            = 0
[pid 21135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21135] setpgid(0, 0)               = 0
[pid 21135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21135] write(3, "1000", 4)         = 4
[pid 21135] close(3)                    = 0
[pid 21135] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21135] write(1, "executing program\n", 18) = 18
[pid 21135] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21135] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21135] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21135] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21135] exit_group(0)               = ?
[pid 21135] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21135, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20287", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20287", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20287/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20287/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20287/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20287")                        = 0
mkdir("./20288", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21136
./strace-static-x86_64: Process 21136 attached
[pid 21136] set_robust_list(0x5555589fe660, 24) = 0
[pid 21136] chdir("./20288")            = 0
[pid 21136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21136] setpgid(0, 0)               = 0
[pid 21136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21136] write(3, "1000", 4)         = 4
[pid 21136] close(3)                    = 0
[pid 21136] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21136] write(1, "executing program\n", 18executing program
) = 18
[pid 21136] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21136] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21136] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21136] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21136] exit_group(0)               = ?
[pid 21136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20288", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20288", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20288/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20288/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20288/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20288")                        = 0
mkdir("./20289", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21137
./strace-static-x86_64: Process 21137 attached
[pid 21137] set_robust_list(0x5555589fe660, 24) = 0
[pid 21137] chdir("./20289")            = 0
[pid 21137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21137] setpgid(0, 0)               = 0
[pid 21137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21137] write(3, "1000", 4)         = 4
[pid 21137] close(3)                    = 0
[pid 21137] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21137] write(1, "executing program\n", 18executing program
) = 18
[pid 21137] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21137] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21137] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21137] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21137] exit_group(0)               = ?
[pid 21137] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21137, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20289", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20289", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20289/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20289/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20289/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20289")                        = 0
mkdir("./20290", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21138 attached
 <unfinished ...>
[pid 21138] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21138
[pid 21138] chdir("./20290")            = 0
[pid 21138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21138] setpgid(0, 0)               = 0
[pid 21138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21138] write(3, "1000", 4)         = 4
[pid 21138] close(3)                    = 0
[pid 21138] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21138] write(1, "executing program\n", 18executing program
) = 18
[pid 21138] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21138] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21138] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21138] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21138] exit_group(0)               = ?
[pid 21138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20290", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20290", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20290/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20290/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20290/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20290")                        = 0
mkdir("./20291", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21139
./strace-static-x86_64: Process 21139 attached
[pid 21139] set_robust_list(0x5555589fe660, 24) = 0
[pid 21139] chdir("./20291")            = 0
[pid 21139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21139] setpgid(0, 0)               = 0
[pid 21139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21139] write(3, "1000", 4)         = 4
[pid 21139] close(3)                    = 0
[pid 21139] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21139] write(1, "executing program\n", 18executing program
) = 18
[pid 21139] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21139] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21139] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21139] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21139] exit_group(0)               = ?
[pid 21139] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21139, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20291", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20291", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20291/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20291/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20291/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20291")                        = 0
mkdir("./20292", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21140
./strace-static-x86_64: Process 21140 attached
[pid 21140] set_robust_list(0x5555589fe660, 24) = 0
[pid 21140] chdir("./20292")            = 0
[pid 21140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21140] setpgid(0, 0)               = 0
[pid 21140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21140] write(3, "1000", 4)         = 4
[pid 21140] close(3)                    = 0
[pid 21140] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21140] write(1, "executing program\n", 18executing program
) = 18
[pid 21140] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21140] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21140] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21140] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21140] exit_group(0)               = ?
[pid 21140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20292", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20292", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20292/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20292/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20292/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20292")                        = 0
mkdir("./20293", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21141 attached
 <unfinished ...>
[pid 21141] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21141
[pid 21141] chdir("./20293")            = 0
[pid 21141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21141] setpgid(0, 0)               = 0
[pid 21141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21141] write(3, "1000", 4)         = 4
[pid 21141] close(3)                    = 0
[pid 21141] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21141] write(1, "executing program\n", 18executing program
) = 18
[pid 21141] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21141] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21141] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21141] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21141] exit_group(0)               = ?
[pid 21141] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21141, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20293", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20293", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20293/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20293/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20293/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20293")                        = 0
mkdir("./20294", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21142 attached
 <unfinished ...>
[pid 21142] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21142
[pid 21142] chdir("./20294")            = 0
[pid 21142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21142] setpgid(0, 0)               = 0
[pid 21142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21142] write(3, "1000", 4)         = 4
[pid 21142] close(3)                    = 0
[pid 21142] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21142] write(1, "executing program\n", 18executing program
) = 18
[pid 21142] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21142] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21142] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21142] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21142] exit_group(0)               = ?
[pid 21142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20294", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20294", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20294/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20294/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20294/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20294")                        = 0
mkdir("./20295", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21143
./strace-static-x86_64: Process 21143 attached
[pid 21143] set_robust_list(0x5555589fe660, 24) = 0
[pid 21143] chdir("./20295")            = 0
[pid 21143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21143] setpgid(0, 0)               = 0
[pid 21143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21143] write(3, "1000", 4)         = 4
[pid 21143] close(3)                    = 0
[pid 21143] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21143] write(1, "executing program\n", 18executing program
) = 18
[pid 21143] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21143] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21143] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21143] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21143] exit_group(0)               = ?
[pid 21143] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21143, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20295", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20295", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20295/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20295/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20295/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20295")                        = 0
mkdir("./20296", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21144
./strace-static-x86_64: Process 21144 attached
[pid 21144] set_robust_list(0x5555589fe660, 24) = 0
[pid 21144] chdir("./20296")            = 0
[pid 21144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21144] setpgid(0, 0)               = 0
[pid 21144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21144] write(3, "1000", 4)         = 4
[pid 21144] close(3)                    = 0
[pid 21144] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21144] write(1, "executing program\n", 18) = 18
[pid 21144] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21144] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21144] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21144] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21144] exit_group(0)               = ?
[pid 21144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20296", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20296", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20296/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20296/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20296/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20296")                        = 0
mkdir("./20297", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21145
./strace-static-x86_64: Process 21145 attached
[pid 21145] set_robust_list(0x5555589fe660, 24) = 0
[pid 21145] chdir("./20297")            = 0
[pid 21145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21145] setpgid(0, 0)               = 0
[pid 21145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21145] write(3, "1000", 4)         = 4
[pid 21145] close(3)                    = 0
[pid 21145] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21145] write(1, "executing program\n", 18executing program
) = 18
[pid 21145] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21145] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21145] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21145] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21145] exit_group(0)               = ?
[pid 21145] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21145, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20297", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20297", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20297/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20297/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20297/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20297")                        = 0
mkdir("./20298", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21146 attached
 <unfinished ...>
[pid 21146] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21146
[pid 21146] chdir("./20298")            = 0
[pid 21146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21146] setpgid(0, 0)               = 0
[pid 21146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21146] write(3, "1000", 4)         = 4
[pid 21146] close(3)                    = 0
[pid 21146] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21146] write(1, "executing program\n", 18executing program
) = 18
[pid 21146] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21146] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21146] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21146] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21146] exit_group(0)               = ?
[pid 21146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20298", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20298", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20298/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20298/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20298/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20298")                        = 0
mkdir("./20299", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21147
./strace-static-x86_64: Process 21147 attached
[pid 21147] set_robust_list(0x5555589fe660, 24) = 0
[pid 21147] chdir("./20299")            = 0
[pid 21147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21147] setpgid(0, 0)               = 0
[pid 21147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21147] write(3, "1000", 4)         = 4
[pid 21147] close(3)                    = 0
[pid 21147] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21147] write(1, "executing program\n", 18) = 18
[pid 21147] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21147] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21147] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21147] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21147] exit_group(0)               = ?
[pid 21147] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21147, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20299", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20299", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20299/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20299/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20299/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20299")                        = 0
mkdir("./20300", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21148
./strace-static-x86_64: Process 21148 attached
[pid 21148] set_robust_list(0x5555589fe660, 24) = 0
[pid 21148] chdir("./20300")            = 0
[pid 21148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21148] setpgid(0, 0)               = 0
[pid 21148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21148] write(3, "1000", 4)         = 4
[pid 21148] close(3)                    = 0
[pid 21148] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21148] write(1, "executing program\n", 18) = 18
[pid 21148] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21148] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21148] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21148] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21148] exit_group(0)               = ?
[pid 21148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20300", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20300", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20300/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20300/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20300/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20300")                        = 0
mkdir("./20301", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21149 attached
 <unfinished ...>
[pid 21149] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21149
[pid 21149] chdir("./20301")            = 0
[pid 21149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21149] setpgid(0, 0)               = 0
[pid 21149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21149] write(3, "1000", 4)         = 4
[pid 21149] close(3)                    = 0
[pid 21149] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21149] write(1, "executing program\n", 18) = 18
[pid 21149] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21149] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21149] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21149] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21149] exit_group(0)               = ?
[pid 21149] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21149, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20301", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20301", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20301/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20301/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20301/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20301")                        = 0
mkdir("./20302", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21150 attached
 <unfinished ...>
[pid 21150] set_robust_list(0x5555589fe660, 24) = 0
[pid 21150] chdir("./20302" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21150
[pid 21150] <... chdir resumed>)        = 0
[pid 21150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21150] setpgid(0, 0)               = 0
[pid 21150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21150] write(3, "1000", 4)         = 4
[pid 21150] close(3)                    = 0
[pid 21150] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21150] write(1, "executing program\n", 18executing program
) = 18
[pid 21150] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21150] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21150] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21150] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21150] exit_group(0)               = ?
[pid 21150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20302", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20302", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20302/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20302/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20302/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20302")                        = 0
mkdir("./20303", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21151
./strace-static-x86_64: Process 21151 attached
[pid 21151] set_robust_list(0x5555589fe660, 24) = 0
[pid 21151] chdir("./20303")            = 0
[pid 21151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21151] setpgid(0, 0)               = 0
[pid 21151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21151] write(3, "1000", 4)         = 4
[pid 21151] close(3)                    = 0
[pid 21151] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21151] write(1, "executing program\n", 18) = 18
[pid 21151] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21151] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21151] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21151] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21151] exit_group(0)               = ?
[pid 21151] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21151, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20303", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20303", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20303/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20303/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20303/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20303")                        = 0
mkdir("./20304", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21152
./strace-static-x86_64: Process 21152 attached
[pid 21152] set_robust_list(0x5555589fe660, 24) = 0
[pid 21152] chdir("./20304")            = 0
[pid 21152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21152] setpgid(0, 0)               = 0
[pid 21152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21152] write(3, "1000", 4)         = 4
[pid 21152] close(3)                    = 0
[pid 21152] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21152] write(1, "executing program\n", 18executing program
) = 18
[pid 21152] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21152] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21152] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21152] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21152] exit_group(0)               = ?
[pid 21152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20304", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20304", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20304/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20304/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20304/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20304")                        = 0
mkdir("./20305", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21153
./strace-static-x86_64: Process 21153 attached
[pid 21153] set_robust_list(0x5555589fe660, 24) = 0
[pid 21153] chdir("./20305")            = 0
[pid 21153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21153] setpgid(0, 0)               = 0
[pid 21153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21153] write(3, "1000", 4)         = 4
[pid 21153] close(3)                    = 0
[pid 21153] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21153] write(1, "executing program\n", 18executing program
) = 18
[pid 21153] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21153] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21153] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21153] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21153] exit_group(0)               = ?
[pid 21153] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21153, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20305", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20305", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20305/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20305/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20305/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20305")                        = 0
mkdir("./20306", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21154
./strace-static-x86_64: Process 21154 attached
[pid 21154] set_robust_list(0x5555589fe660, 24) = 0
[pid 21154] chdir("./20306")            = 0
[pid 21154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21154] setpgid(0, 0)               = 0
[pid 21154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21154] write(3, "1000", 4)         = 4
[pid 21154] close(3)                    = 0
[pid 21154] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21154] write(1, "executing program\n", 18executing program
) = 18
[pid 21154] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21154] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21154] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21154] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21154] exit_group(0)               = ?
[pid 21154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20306", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20306", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20306/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20306/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20306/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20306")                        = 0
mkdir("./20307", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21155
./strace-static-x86_64: Process 21155 attached
[pid 21155] set_robust_list(0x5555589fe660, 24) = 0
[pid 21155] chdir("./20307")            = 0
[pid 21155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21155] setpgid(0, 0)               = 0
[pid 21155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21155] write(3, "1000", 4)         = 4
[pid 21155] close(3)                    = 0
[pid 21155] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21155] write(1, "executing program\n", 18executing program
) = 18
[pid 21155] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21155] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21155] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21155] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21155] exit_group(0)               = ?
[pid 21155] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21155, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20307", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20307", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20307/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20307/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20307/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20307")                        = 0
mkdir("./20308", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21156
./strace-static-x86_64: Process 21156 attached
[pid 21156] set_robust_list(0x5555589fe660, 24) = 0
[pid 21156] chdir("./20308")            = 0
[pid 21156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21156] setpgid(0, 0)               = 0
[pid 21156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21156] write(3, "1000", 4)         = 4
[pid 21156] close(3)                    = 0
[pid 21156] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21156] write(1, "executing program\n", 18executing program
) = 18
[pid 21156] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21156] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21156] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21156] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21156] exit_group(0)               = ?
[pid 21156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20308", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20308", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20308/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20308/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20308/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20308")                        = 0
mkdir("./20309", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21157
./strace-static-x86_64: Process 21157 attached
[pid 21157] set_robust_list(0x5555589fe660, 24) = 0
[pid 21157] chdir("./20309")            = 0
[pid 21157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21157] setpgid(0, 0)               = 0
[pid 21157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21157] write(3, "1000", 4)         = 4
[pid 21157] close(3)                    = 0
[pid 21157] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21157] write(1, "executing program\n", 18executing program
) = 18
[pid 21157] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21157] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21157] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21157] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21157] exit_group(0)               = ?
[pid 21157] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21157, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20309", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20309", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20309/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20309/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20309/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20309")                        = 0
mkdir("./20310", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21158 attached
, child_tidptr=0x5555589fe650) = 21158
[pid 21158] set_robust_list(0x5555589fe660, 24) = 0
[pid 21158] chdir("./20310")            = 0
[pid 21158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21158] setpgid(0, 0)               = 0
[pid 21158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21158] write(3, "1000", 4)         = 4
[pid 21158] close(3)                    = 0
[pid 21158] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21158] write(1, "executing program\n", 18) = 18
[pid 21158] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21158] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21158] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21158] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21158] exit_group(0)               = ?
[pid 21158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20310", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20310", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20310/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20310/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20310/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20310")                        = 0
mkdir("./20311", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21159
./strace-static-x86_64: Process 21159 attached
[pid 21159] set_robust_list(0x5555589fe660, 24) = 0
[pid 21159] chdir("./20311")            = 0
[pid 21159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21159] setpgid(0, 0)               = 0
[pid 21159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21159] write(3, "1000", 4)         = 4
[pid 21159] close(3)                    = 0
[pid 21159] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21159] write(1, "executing program\n", 18executing program
) = 18
[pid 21159] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21159] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21159] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21159] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21159] exit_group(0)               = ?
[pid 21159] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21159, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20311", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20311", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20311/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20311/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20311/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20311")                        = 0
mkdir("./20312", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21160
./strace-static-x86_64: Process 21160 attached
[pid 21160] set_robust_list(0x5555589fe660, 24) = 0
[pid 21160] chdir("./20312")            = 0
[pid 21160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21160] setpgid(0, 0)               = 0
[pid 21160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21160] write(3, "1000", 4)         = 4
[pid 21160] close(3)                    = 0
[pid 21160] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21160] write(1, "executing program\n", 18) = 18
[pid 21160] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21160] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21160] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21160] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21160] exit_group(0)               = ?
[pid 21160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20312", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20312", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20312/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20312/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20312/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20312")                        = 0
mkdir("./20313", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21161 attached
 <unfinished ...>
[pid 21161] set_robust_list(0x5555589fe660, 24) = 0
[pid 21161] chdir("./20313")            = 0
[pid 21161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21161] setpgid(0, 0)               = 0
[pid 21161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21161] write(3, "1000", 4)         = 4
[pid 21161] close(3)                    = 0
[pid 21161] symlink("/dev/binderfs", "./binderfs" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21161
[pid 21161] <... symlink resumed>)      = 0
executing program
[pid 21161] write(1, "executing program\n", 18) = 18
[pid 21161] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21161] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21161] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21161] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21161] exit_group(0)               = ?
[pid 21161] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21161, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20313", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20313", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20313/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20313/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20313/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20313")                        = 0
mkdir("./20314", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21162 attached
, child_tidptr=0x5555589fe650) = 21162
[pid 21162] set_robust_list(0x5555589fe660, 24) = 0
[pid 21162] chdir("./20314")            = 0
[pid 21162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21162] setpgid(0, 0)               = 0
[pid 21162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21162] write(3, "1000", 4)         = 4
[pid 21162] close(3)                    = 0
[pid 21162] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21162] write(1, "executing program\n", 18executing program
) = 18
[pid 21162] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21162] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21162] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21162] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21162] exit_group(0)               = ?
[pid 21162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20314", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20314", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20314/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20314/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20314/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20314")                        = 0
mkdir("./20315", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21163
./strace-static-x86_64: Process 21163 attached
[pid 21163] set_robust_list(0x5555589fe660, 24) = 0
[pid 21163] chdir("./20315")            = 0
[pid 21163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21163] setpgid(0, 0)               = 0
[pid 21163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21163] write(3, "1000", 4)         = 4
[pid 21163] close(3)                    = 0
[pid 21163] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21163] write(1, "executing program\n", 18executing program
) = 18
[pid 21163] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21163] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21163] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21163] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21163] exit_group(0)               = ?
[pid 21163] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21163, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20315", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20315", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20315/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20315/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20315/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20315")                        = 0
mkdir("./20316", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21164
./strace-static-x86_64: Process 21164 attached
[pid 21164] set_robust_list(0x5555589fe660, 24) = 0
[pid 21164] chdir("./20316")            = 0
[pid 21164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21164] setpgid(0, 0)               = 0
[pid 21164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21164] write(3, "1000", 4)         = 4
[pid 21164] close(3)                    = 0
[pid 21164] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21164] write(1, "executing program\n", 18executing program
) = 18
[pid 21164] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21164] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21164] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21164] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21164] exit_group(0)               = ?
[pid 21164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20316", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20316", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20316/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20316/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20316/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20316")                        = 0
mkdir("./20317", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21165
./strace-static-x86_64: Process 21165 attached
[pid 21165] set_robust_list(0x5555589fe660, 24) = 0
[pid 21165] chdir("./20317")            = 0
[pid 21165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21165] setpgid(0, 0)               = 0
[pid 21165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21165] write(3, "1000", 4)         = 4
[pid 21165] close(3)                    = 0
[pid 21165] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21165] write(1, "executing program\n", 18executing program
) = 18
[pid 21165] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21165] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21165] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21165] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21165] exit_group(0)               = ?
[pid 21165] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21165, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20317", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20317", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20317/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20317/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20317/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20317")                        = 0
mkdir("./20318", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21166
./strace-static-x86_64: Process 21166 attached
[pid 21166] set_robust_list(0x5555589fe660, 24) = 0
[pid 21166] chdir("./20318")            = 0
[pid 21166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21166] setpgid(0, 0)               = 0
[pid 21166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21166] write(3, "1000", 4)         = 4
[pid 21166] close(3)                    = 0
[pid 21166] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21166] write(1, "executing program\n", 18executing program
) = 18
[pid 21166] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21166] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21166] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21166] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21166] exit_group(0)               = ?
[pid 21166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20318", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20318", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20318/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20318/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20318/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20318")                        = 0
mkdir("./20319", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21167 attached
 <unfinished ...>
[pid 21167] set_robust_list(0x5555589fe660, 24) = 0
[pid 21167] chdir("./20319" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21167
[pid 21167] <... chdir resumed>)        = 0
[pid 21167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21167] setpgid(0, 0)               = 0
[pid 21167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21167] write(3, "1000", 4)         = 4
[pid 21167] close(3)                    = 0
[pid 21167] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21167] write(1, "executing program\n", 18executing program
) = 18
[pid 21167] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21167] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21167] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21167] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21167] exit_group(0)               = ?
[pid 21167] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21167, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20319", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20319", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20319/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20319/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20319/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20319")                        = 0
mkdir("./20320", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21168 attached
 <unfinished ...>
[pid 21168] set_robust_list(0x5555589fe660, 24) = 0
[pid 21168] chdir("./20320")            = 0
[pid 21168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21168] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21168
[pid 21168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21168] write(3, "1000", 4)         = 4
[pid 21168] close(3)                    = 0
[pid 21168] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21168] write(1, "executing program\n", 18executing program
) = 18
[pid 21168] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21168] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21168] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21168] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21168] exit_group(0)               = ?
[pid 21168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20320", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20320", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20320/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20320/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20320/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20320")                        = 0
mkdir("./20321", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21169 attached
 <unfinished ...>
[pid 21169] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21169
[pid 21169] chdir("./20321")            = 0
[pid 21169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21169] setpgid(0, 0)               = 0
[pid 21169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21169] write(3, "1000", 4)         = 4
[pid 21169] close(3)                    = 0
[pid 21169] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21169] write(1, "executing program\n", 18executing program
) = 18
[pid 21169] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21169] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21169] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21169] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21169] exit_group(0)               = ?
[pid 21169] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21169, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20321", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20321", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20321/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20321/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20321/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20321")                        = 0
mkdir("./20322", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21170
./strace-static-x86_64: Process 21170 attached
[pid 21170] set_robust_list(0x5555589fe660, 24) = 0
[pid 21170] chdir("./20322")            = 0
[pid 21170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21170] setpgid(0, 0)               = 0
[pid 21170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21170] write(3, "1000", 4)         = 4
[pid 21170] close(3)                    = 0
[pid 21170] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21170] write(1, "executing program\n", 18) = 18
[pid 21170] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21170] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21170] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21170] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21170] exit_group(0)               = ?
[pid 21170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20322", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20322", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20322/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20322/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20322/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20322")                        = 0
mkdir("./20323", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21171
./strace-static-x86_64: Process 21171 attached
[pid 21171] set_robust_list(0x5555589fe660, 24) = 0
[pid 21171] chdir("./20323")            = 0
[pid 21171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21171] setpgid(0, 0)               = 0
[pid 21171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21171] write(3, "1000", 4)         = 4
[pid 21171] close(3)                    = 0
[pid 21171] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21171] write(1, "executing program\n", 18executing program
) = 18
[pid 21171] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21171] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21171] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21171] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21171] exit_group(0)               = ?
[pid 21171] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21171, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20323", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20323", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20323/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20323/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20323/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20323")                        = 0
mkdir("./20324", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21172
./strace-static-x86_64: Process 21172 attached
[pid 21172] set_robust_list(0x5555589fe660, 24) = 0
[pid 21172] chdir("./20324")            = 0
[pid 21172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21172] setpgid(0, 0)               = 0
[pid 21172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21172] write(3, "1000", 4)         = 4
[pid 21172] close(3)                    = 0
[pid 21172] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21172] write(1, "executing program\n", 18executing program
) = 18
[pid 21172] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21172] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21172] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21172] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21172] exit_group(0)               = ?
[pid 21172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20324", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20324", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20324/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20324/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20324/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20324")                        = 0
mkdir("./20325", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21173 attached
, child_tidptr=0x5555589fe650) = 21173
[pid 21173] set_robust_list(0x5555589fe660, 24) = 0
[pid 21173] chdir("./20325")            = 0
[pid 21173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21173] setpgid(0, 0)               = 0
[pid 21173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21173] write(3, "1000", 4)         = 4
[pid 21173] close(3)                    = 0
[pid 21173] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21173] write(1, "executing program\n", 18executing program
) = 18
[pid 21173] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21173] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21173] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21173] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21173] exit_group(0)               = ?
[pid 21173] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21173, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20325", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20325", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20325/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20325/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20325/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20325")                        = 0
mkdir("./20326", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21174
./strace-static-x86_64: Process 21174 attached
[pid 21174] set_robust_list(0x5555589fe660, 24) = 0
[pid 21174] chdir("./20326")            = 0
[pid 21174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21174] setpgid(0, 0)               = 0
[pid 21174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21174] write(3, "1000", 4)         = 4
[pid 21174] close(3)                    = 0
[pid 21174] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21174] write(1, "executing program\n", 18) = 18
[pid 21174] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21174] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21174] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21174] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21174] exit_group(0)               = ?
[pid 21174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20326", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20326", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20326/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20326/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20326/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20326")                        = 0
mkdir("./20327", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21175 attached
, child_tidptr=0x5555589fe650) = 21175
[pid 21175] set_robust_list(0x5555589fe660, 24) = 0
[pid 21175] chdir("./20327")            = 0
[pid 21175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21175] setpgid(0, 0)               = 0
[pid 21175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21175] write(3, "1000", 4)         = 4
[pid 21175] close(3)                    = 0
[pid 21175] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21175] write(1, "executing program\n", 18executing program
) = 18
[pid 21175] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21175] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21175] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21175] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21175] exit_group(0)               = ?
[pid 21175] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21175, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20327", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20327", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20327/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20327/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20327/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20327")                        = 0
mkdir("./20328", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21176
./strace-static-x86_64: Process 21176 attached
[pid 21176] set_robust_list(0x5555589fe660, 24) = 0
[pid 21176] chdir("./20328")            = 0
[pid 21176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21176] setpgid(0, 0)               = 0
[pid 21176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21176] write(3, "1000", 4)         = 4
[pid 21176] close(3)                    = 0
[pid 21176] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21176] write(1, "executing program\n", 18executing program
) = 18
[pid 21176] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21176] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21176] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21176] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21176] exit_group(0)               = ?
[pid 21176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20328", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20328", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20328/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20328/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20328/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20328")                        = 0
mkdir("./20329", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21177
./strace-static-x86_64: Process 21177 attached
[pid 21177] set_robust_list(0x5555589fe660, 24) = 0
[pid 21177] chdir("./20329")            = 0
[pid 21177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21177] setpgid(0, 0)               = 0
[pid 21177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21177] write(3, "1000", 4)         = 4
[pid 21177] close(3)                    = 0
[pid 21177] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21177] write(1, "executing program\n", 18executing program
) = 18
[pid 21177] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21177] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21177] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21177] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21177] exit_group(0)               = ?
[pid 21177] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21177, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20329", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20329", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20329/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20329/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20329/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20329")                        = 0
mkdir("./20330", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21178
./strace-static-x86_64: Process 21178 attached
[pid 21178] set_robust_list(0x5555589fe660, 24) = 0
[pid 21178] chdir("./20330")            = 0
[pid 21178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21178] setpgid(0, 0)               = 0
[pid 21178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21178] write(3, "1000", 4)         = 4
[pid 21178] close(3)                    = 0
[pid 21178] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21178] write(1, "executing program\n", 18executing program
) = 18
[pid 21178] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21178] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21178] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21178] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21178] exit_group(0)               = ?
[pid 21178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20330", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20330", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20330/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20330/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20330/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20330")                        = 0
mkdir("./20331", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21179
./strace-static-x86_64: Process 21179 attached
[pid 21179] set_robust_list(0x5555589fe660, 24) = 0
[pid 21179] chdir("./20331")            = 0
[pid 21179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21179] setpgid(0, 0)               = 0
[pid 21179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21179] write(3, "1000", 4)         = 4
[pid 21179] close(3)                    = 0
[pid 21179] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21179] write(1, "executing program\n", 18executing program
) = 18
[pid 21179] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21179] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21179] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21179] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21179] exit_group(0)               = ?
[pid 21179] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21179, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20331", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20331", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20331/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20331/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20331/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20331")                        = 0
mkdir("./20332", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21180
./strace-static-x86_64: Process 21180 attached
[pid 21180] set_robust_list(0x5555589fe660, 24) = 0
[pid 21180] chdir("./20332")            = 0
[pid 21180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21180] setpgid(0, 0)               = 0
[pid 21180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21180] write(3, "1000", 4)         = 4
[pid 21180] close(3)                    = 0
[pid 21180] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21180] write(1, "executing program\n", 18executing program
) = 18
[pid 21180] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21180] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21180] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21180] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21180] exit_group(0)               = ?
[pid 21180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21180, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20332", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20332", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20332/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20332/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20332/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20332")                        = 0
mkdir("./20333", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21181
./strace-static-x86_64: Process 21181 attached
[pid 21181] set_robust_list(0x5555589fe660, 24) = 0
[pid 21181] chdir("./20333")            = 0
[pid 21181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21181] setpgid(0, 0)               = 0
[pid 21181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21181] write(3, "1000", 4)         = 4
[pid 21181] close(3)                    = 0
[pid 21181] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21181] write(1, "executing program\n", 18executing program
) = 18
[pid 21181] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21181] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21181] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21181] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21181] exit_group(0)               = ?
[pid 21181] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21181, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20333", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20333", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20333/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20333/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20333/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20333")                        = 0
mkdir("./20334", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21182
./strace-static-x86_64: Process 21182 attached
[pid 21182] set_robust_list(0x5555589fe660, 24) = 0
[pid 21182] chdir("./20334")            = 0
[pid 21182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21182] setpgid(0, 0)               = 0
[pid 21182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21182] write(3, "1000", 4)         = 4
[pid 21182] close(3)                    = 0
[pid 21182] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21182] write(1, "executing program\n", 18executing program
) = 18
[pid 21182] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21182] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21182] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21182] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21182] exit_group(0)               = ?
[pid 21182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20334", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20334", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20334/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20334/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20334/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20334")                        = 0
mkdir("./20335", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21183 attached
 <unfinished ...>
[pid 21183] set_robust_list(0x5555589fe660, 24) = 0
[pid 21183] chdir("./20335")            = 0
[pid 21183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21183] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21183
[pid 21183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21183] write(3, "1000", 4)         = 4
[pid 21183] close(3)                    = 0
[pid 21183] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21183] write(1, "executing program\n", 18) = 18
[pid 21183] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21183] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21183] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21183] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21183] exit_group(0)               = ?
[pid 21183] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21183, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20335", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20335", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20335/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20335/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20335/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20335")                        = 0
mkdir("./20336", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21184 attached
, child_tidptr=0x5555589fe650) = 21184
[pid 21184] set_robust_list(0x5555589fe660, 24) = 0
[pid 21184] chdir("./20336")            = 0
[pid 21184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21184] setpgid(0, 0)               = 0
[pid 21184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21184] write(3, "1000", 4)         = 4
[pid 21184] close(3)                    = 0
[pid 21184] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21184] write(1, "executing program\n", 18) = 18
[pid 21184] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21184] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21184] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21184] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21184] exit_group(0)               = ?
[pid 21184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20336", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20336", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20336/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20336/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20336/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20336")                        = 0
mkdir("./20337", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21185
./strace-static-x86_64: Process 21185 attached
[pid 21185] set_robust_list(0x5555589fe660, 24) = 0
[pid 21185] chdir("./20337")            = 0
[pid 21185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21185] setpgid(0, 0)               = 0
[pid 21185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21185] write(3, "1000", 4)         = 4
[pid 21185] close(3)                    = 0
[pid 21185] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21185] write(1, "executing program\n", 18) = 18
[pid 21185] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21185] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21185] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21185] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21185] exit_group(0)               = ?
[pid 21185] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21185, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20337", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20337", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20337/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20337/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20337/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20337")                        = 0
mkdir("./20338", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21186
./strace-static-x86_64: Process 21186 attached
[pid 21186] set_robust_list(0x5555589fe660, 24) = 0
[pid 21186] chdir("./20338")            = 0
[pid 21186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21186] setpgid(0, 0)               = 0
[pid 21186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21186] write(3, "1000", 4)         = 4
[pid 21186] close(3)                    = 0
[pid 21186] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21186] write(1, "executing program\n", 18executing program
) = 18
[pid 21186] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21186] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21186] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21186] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21186] exit_group(0)               = ?
[pid 21186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20338", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20338", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20338/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20338/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20338/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20338")                        = 0
mkdir("./20339", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21187
./strace-static-x86_64: Process 21187 attached
[pid 21187] set_robust_list(0x5555589fe660, 24) = 0
[pid 21187] chdir("./20339")            = 0
[pid 21187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21187] setpgid(0, 0)               = 0
[pid 21187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21187] write(3, "1000", 4)         = 4
[pid 21187] close(3)                    = 0
[pid 21187] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21187] write(1, "executing program\n", 18) = 18
[pid 21187] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21187] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21187] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21187] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21187] exit_group(0)               = ?
[pid 21187] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21187, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20339", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20339", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20339/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20339/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20339/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20339")                        = 0
mkdir("./20340", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21188
./strace-static-x86_64: Process 21188 attached
[pid 21188] set_robust_list(0x5555589fe660, 24) = 0
[pid 21188] chdir("./20340")            = 0
[pid 21188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21188] setpgid(0, 0)               = 0
[pid 21188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21188] write(3, "1000", 4)         = 4
[pid 21188] close(3)                    = 0
[pid 21188] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21188] write(1, "executing program\n", 18) = 18
[pid 21188] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21188] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21188] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21188] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21188] exit_group(0)               = ?
[pid 21188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20340", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20340", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20340/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20340/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20340/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20340")                        = 0
mkdir("./20341", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21189
./strace-static-x86_64: Process 21189 attached
[pid 21189] set_robust_list(0x5555589fe660, 24) = 0
[pid 21189] chdir("./20341")            = 0
[pid 21189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21189] setpgid(0, 0)               = 0
[pid 21189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21189] write(3, "1000", 4)         = 4
[pid 21189] close(3)                    = 0
[pid 21189] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21189] write(1, "executing program\n", 18executing program
) = 18
[pid 21189] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21189] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21189] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21189] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21189] exit_group(0)               = ?
[pid 21189] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21189, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20341", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20341", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20341/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20341/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20341/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20341")                        = 0
mkdir("./20342", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21190
./strace-static-x86_64: Process 21190 attached
[pid 21190] set_robust_list(0x5555589fe660, 24) = 0
[pid 21190] chdir("./20342")            = 0
[pid 21190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21190] setpgid(0, 0)               = 0
[pid 21190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21190] write(3, "1000", 4)         = 4
[pid 21190] close(3)                    = 0
[pid 21190] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21190] write(1, "executing program\n", 18executing program
) = 18
[pid 21190] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21190] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21190] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21190] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21190] exit_group(0)               = ?
[pid 21190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20342", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20342", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20342/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20342/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20342/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20342")                        = 0
mkdir("./20343", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21191 attached
 <unfinished ...>
[pid 21191] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21191
[pid 21191] chdir("./20343")            = 0
[pid 21191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21191] setpgid(0, 0)               = 0
[pid 21191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21191] write(3, "1000", 4)         = 4
[pid 21191] close(3)                    = 0
[pid 21191] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21191] write(1, "executing program\n", 18) = 18
[pid 21191] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21191] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21191] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21191] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21191] exit_group(0)               = ?
[pid 21191] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21191, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20343", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20343", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20343/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20343/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20343/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20343")                        = 0
mkdir("./20344", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21192
./strace-static-x86_64: Process 21192 attached
[pid 21192] set_robust_list(0x5555589fe660, 24) = 0
[pid 21192] chdir("./20344")            = 0
[pid 21192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21192] setpgid(0, 0)               = 0
[pid 21192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21192] write(3, "1000", 4)         = 4
[pid 21192] close(3)                    = 0
[pid 21192] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21192] write(1, "executing program\n", 18executing program
) = 18
[pid 21192] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21192] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21192] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21192] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21192] exit_group(0)               = ?
[pid 21192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20344", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20344", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20344/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20344/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20344/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20344")                        = 0
mkdir("./20345", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21193
./strace-static-x86_64: Process 21193 attached
[pid 21193] set_robust_list(0x5555589fe660, 24) = 0
[pid 21193] chdir("./20345")            = 0
[pid 21193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21193] setpgid(0, 0)               = 0
[pid 21193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21193] write(3, "1000", 4)         = 4
[pid 21193] close(3)                    = 0
[pid 21193] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21193] write(1, "executing program\n", 18executing program
) = 18
[pid 21193] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21193] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21193] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21193] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21193] exit_group(0)               = ?
[pid 21193] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21193, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20345", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20345", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20345/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20345/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20345/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20345")                        = 0
mkdir("./20346", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21194
./strace-static-x86_64: Process 21194 attached
[pid 21194] set_robust_list(0x5555589fe660, 24) = 0
[pid 21194] chdir("./20346")            = 0
[pid 21194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21194] setpgid(0, 0)               = 0
[pid 21194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21194] write(3, "1000", 4)         = 4
[pid 21194] close(3)                    = 0
[pid 21194] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21194] write(1, "executing program\n", 18executing program
) = 18
[pid 21194] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21194] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21194] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21194] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21194] exit_group(0)               = ?
[pid 21194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21194, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20346", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20346", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20346/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20346/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20346/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20346")                        = 0
mkdir("./20347", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21195 attached
 <unfinished ...>
[pid 21195] set_robust_list(0x5555589fe660, 24) = 0
[pid 21195] chdir("./20347" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21195
[pid 21195] <... chdir resumed>)        = 0
[pid 21195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21195] setpgid(0, 0)               = 0
[pid 21195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21195] write(3, "1000", 4)         = 4
[pid 21195] close(3)                    = 0
[pid 21195] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21195] write(1, "executing program\n", 18executing program
) = 18
[pid 21195] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21195] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21195] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21195] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21195] exit_group(0)               = ?
[pid 21195] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21195, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20347", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20347", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20347/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20347/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20347/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20347")                        = 0
mkdir("./20348", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21197
./strace-static-x86_64: Process 21197 attached
[pid 21197] set_robust_list(0x5555589fe660, 24) = 0
[pid 21197] chdir("./20348")            = 0
[pid 21197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21197] setpgid(0, 0)               = 0
[pid 21197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21197] write(3, "1000", 4)         = 4
[pid 21197] close(3)                    = 0
[pid 21197] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21197] write(1, "executing program\n", 18executing program
) = 18
[pid 21197] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21197] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21197] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21197] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21197] exit_group(0)               = ?
[pid 21197] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21197, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20348", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20348", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20348/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20348/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20348/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20348")                        = 0
mkdir("./20349", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21198 attached
, child_tidptr=0x5555589fe650) = 21198
[pid 21198] set_robust_list(0x5555589fe660, 24) = 0
[pid 21198] chdir("./20349")            = 0
[pid 21198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21198] setpgid(0, 0)               = 0
[pid 21198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21198] write(3, "1000", 4)         = 4
[pid 21198] close(3)                    = 0
[pid 21198] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21198] write(1, "executing program\n", 18executing program
) = 18
[pid 21198] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21198] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21198] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21198] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21198] exit_group(0)               = ?
[pid 21198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20349", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20349", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20349/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20349/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20349/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20349")                        = 0
mkdir("./20350", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21199
./strace-static-x86_64: Process 21199 attached
[pid 21199] set_robust_list(0x5555589fe660, 24) = 0
[pid 21199] chdir("./20350")            = 0
[pid 21199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21199] setpgid(0, 0)               = 0
[pid 21199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21199] write(3, "1000", 4)         = 4
[pid 21199] close(3)                    = 0
[pid 21199] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21199] write(1, "executing program\n", 18executing program
) = 18
[pid 21199] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21199] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21199] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21199] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21199] exit_group(0)               = ?
[pid 21199] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21199, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20350", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20350", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20350/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20350/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20350/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20350")                        = 0
mkdir("./20351", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21200
./strace-static-x86_64: Process 21200 attached
[pid 21200] set_robust_list(0x5555589fe660, 24) = 0
[pid 21200] chdir("./20351")            = 0
[pid 21200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21200] setpgid(0, 0)               = 0
[pid 21200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21200] write(3, "1000", 4)         = 4
[pid 21200] close(3)                    = 0
[pid 21200] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21200] write(1, "executing program\n", 18executing program
) = 18
[pid 21200] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21200] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21200] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21200] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21200] exit_group(0)               = ?
[pid 21200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20351", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20351", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20351/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20351/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20351/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20351")                        = 0
mkdir("./20352", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21201
./strace-static-x86_64: Process 21201 attached
[pid 21201] set_robust_list(0x5555589fe660, 24) = 0
[pid 21201] chdir("./20352")            = 0
[pid 21201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21201] setpgid(0, 0)               = 0
[pid 21201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21201] write(3, "1000", 4)         = 4
[pid 21201] close(3)                    = 0
[pid 21201] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21201] write(1, "executing program\n", 18executing program
) = 18
[pid 21201] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21201] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21201] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21201] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21201] exit_group(0)               = ?
[pid 21201] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21201, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20352", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20352", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20352/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20352/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20352/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20352")                        = 0
mkdir("./20353", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21202
./strace-static-x86_64: Process 21202 attached
[pid 21202] set_robust_list(0x5555589fe660, 24) = 0
[pid 21202] chdir("./20353")            = 0
[pid 21202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21202] setpgid(0, 0)               = 0
[pid 21202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21202] write(3, "1000", 4)         = 4
[pid 21202] close(3)                    = 0
[pid 21202] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21202] write(1, "executing program\n", 18executing program
) = 18
[pid 21202] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21202] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21202] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21202] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21202] exit_group(0)               = ?
[pid 21202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20353", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20353", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20353/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20353/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20353/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20353")                        = 0
mkdir("./20354", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21203
./strace-static-x86_64: Process 21203 attached
[pid 21203] set_robust_list(0x5555589fe660, 24) = 0
[pid 21203] chdir("./20354")            = 0
[pid 21203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21203] setpgid(0, 0)               = 0
[pid 21203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21203] write(3, "1000", 4)         = 4
[pid 21203] close(3)                    = 0
[pid 21203] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21203] write(1, "executing program\n", 18) = 18
[pid 21203] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21203] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21203] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21203] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21203] exit_group(0)               = ?
[pid 21203] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21203, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20354", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20354", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20354/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20354/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20354/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20354")                        = 0
mkdir("./20355", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21204
./strace-static-x86_64: Process 21204 attached
[pid 21204] set_robust_list(0x5555589fe660, 24) = 0
[pid 21204] chdir("./20355")            = 0
[pid 21204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21204] setpgid(0, 0)               = 0
[pid 21204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21204] write(3, "1000", 4)         = 4
[pid 21204] close(3)                    = 0
[pid 21204] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21204] write(1, "executing program\n", 18executing program
) = 18
[pid 21204] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21204] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21204] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21204] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21204] exit_group(0)               = ?
[pid 21204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20355", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20355", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20355/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20355/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20355/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20355")                        = 0
mkdir("./20356", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21205
./strace-static-x86_64: Process 21205 attached
[pid 21205] set_robust_list(0x5555589fe660, 24) = 0
[pid 21205] chdir("./20356")            = 0
[pid 21205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21205] setpgid(0, 0)               = 0
[pid 21205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21205] write(3, "1000", 4)         = 4
[pid 21205] close(3)                    = 0
[pid 21205] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21205] write(1, "executing program\n", 18executing program
) = 18
[pid 21205] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21205] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21205] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21205] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21205] exit_group(0)               = ?
[pid 21205] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21205, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20356", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20356", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20356/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20356/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20356/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20356")                        = 0
mkdir("./20357", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21206
./strace-static-x86_64: Process 21206 attached
[pid 21206] set_robust_list(0x5555589fe660, 24) = 0
[pid 21206] chdir("./20357")            = 0
[pid 21206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21206] setpgid(0, 0)               = 0
[pid 21206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21206] write(3, "1000", 4)         = 4
[pid 21206] close(3)                    = 0
[pid 21206] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21206] write(1, "executing program\n", 18executing program
) = 18
[pid 21206] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21206] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21206] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21206] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21206] exit_group(0)               = ?
[pid 21206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20357", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20357", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20357/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20357/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20357/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20357")                        = 0
mkdir("./20358", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21207
./strace-static-x86_64: Process 21207 attached
[pid 21207] set_robust_list(0x5555589fe660, 24) = 0
[pid 21207] chdir("./20358")            = 0
[pid 21207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21207] setpgid(0, 0)               = 0
[pid 21207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21207] write(3, "1000", 4)         = 4
[pid 21207] close(3)                    = 0
[pid 21207] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21207] write(1, "executing program\n", 18executing program
) = 18
[pid 21207] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21207] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21207] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21207] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21207] exit_group(0)               = ?
[pid 21207] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21207, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20358", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20358", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20358/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20358/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20358/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20358")                        = 0
mkdir("./20359", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21208
./strace-static-x86_64: Process 21208 attached
[pid 21208] set_robust_list(0x5555589fe660, 24) = 0
[pid 21208] chdir("./20359")            = 0
[pid 21208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21208] setpgid(0, 0)               = 0
[pid 21208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21208] write(3, "1000", 4)         = 4
[pid 21208] close(3)                    = 0
[pid 21208] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21208] write(1, "executing program\n", 18executing program
) = 18
[pid 21208] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21208] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21208] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21208] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21208] exit_group(0)               = ?
[pid 21208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20359", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20359", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20359/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20359/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20359/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20359")                        = 0
mkdir("./20360", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21209
./strace-static-x86_64: Process 21209 attached
[pid 21209] set_robust_list(0x5555589fe660, 24) = 0
[pid 21209] chdir("./20360")            = 0
[pid 21209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21209] setpgid(0, 0)               = 0
[pid 21209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21209] write(3, "1000", 4)         = 4
[pid 21209] close(3)                    = 0
[pid 21209] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21209] write(1, "executing program\n", 18executing program
) = 18
[pid 21209] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21209] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21209] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21209] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21209] exit_group(0)               = ?
[pid 21209] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21209, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20360", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20360", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20360/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20360/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20360/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20360")                        = 0
mkdir("./20361", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21210
./strace-static-x86_64: Process 21210 attached
[pid 21210] set_robust_list(0x5555589fe660, 24) = 0
[pid 21210] chdir("./20361")            = 0
[pid 21210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21210] setpgid(0, 0)               = 0
[pid 21210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21210] write(3, "1000", 4)         = 4
[pid 21210] close(3)                    = 0
[pid 21210] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21210] write(1, "executing program\n", 18executing program
) = 18
[pid 21210] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21210] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21210] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21210] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21210] exit_group(0)               = ?
[pid 21210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20361", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20361", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20361/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20361/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20361/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20361")                        = 0
mkdir("./20362", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21211
./strace-static-x86_64: Process 21211 attached
[pid 21211] set_robust_list(0x5555589fe660, 24) = 0
[pid 21211] chdir("./20362")            = 0
[pid 21211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21211] setpgid(0, 0)               = 0
[pid 21211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21211] write(3, "1000", 4)         = 4
[pid 21211] close(3)                    = 0
[pid 21211] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21211] write(1, "executing program\n", 18executing program
) = 18
[pid 21211] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21211] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21211] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21211] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21211] exit_group(0)               = ?
[pid 21211] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21211, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20362", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20362", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20362/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20362/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20362/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20362")                        = 0
mkdir("./20363", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21212
./strace-static-x86_64: Process 21212 attached
[pid 21212] set_robust_list(0x5555589fe660, 24) = 0
[pid 21212] chdir("./20363")            = 0
[pid 21212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21212] setpgid(0, 0)               = 0
[pid 21212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21212] write(3, "1000", 4)         = 4
[pid 21212] close(3)                    = 0
[pid 21212] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21212] write(1, "executing program\n", 18executing program
) = 18
[pid 21212] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21212] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21212] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21212] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21212] exit_group(0)               = ?
[pid 21212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20363", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20363", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20363/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20363/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20363/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20363")                        = 0
mkdir("./20364", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21213 attached
 <unfinished ...>
[pid 21213] set_robust_list(0x5555589fe660, 24) = 0
[pid 21213] chdir("./20364")            = 0
[pid 21213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21213] setpgid(0, 0)               = 0
[pid 21213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21213
[pid 21213] <... openat resumed>)       = 3
[pid 21213] write(3, "1000", 4)         = 4
[pid 21213] close(3)                    = 0
[pid 21213] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21213] write(1, "executing program\n", 18) = 18
[pid 21213] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21213] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21213] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21213] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21213] exit_group(0)               = ?
[pid 21213] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21213, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20364", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20364", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20364/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20364/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20364/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20364")                        = 0
mkdir("./20365", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21214
./strace-static-x86_64: Process 21214 attached
[pid 21214] set_robust_list(0x5555589fe660, 24) = 0
[pid 21214] chdir("./20365")            = 0
[pid 21214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21214] setpgid(0, 0)               = 0
[pid 21214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21214] write(3, "1000", 4)         = 4
[pid 21214] close(3)                    = 0
[pid 21214] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21214] write(1, "executing program\n", 18executing program
) = 18
[pid 21214] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21214] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21214] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21214] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21214] exit_group(0)               = ?
[pid 21214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20365", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20365", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20365/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20365/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20365/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20365")                        = 0
mkdir("./20366", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21215
./strace-static-x86_64: Process 21215 attached
[pid 21215] set_robust_list(0x5555589fe660, 24) = 0
[pid 21215] chdir("./20366")            = 0
[pid 21215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21215] setpgid(0, 0)               = 0
[pid 21215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21215] write(3, "1000", 4)         = 4
[pid 21215] close(3)                    = 0
[pid 21215] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21215] write(1, "executing program\n", 18executing program
) = 18
[pid 21215] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21215] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21215] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21215] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21215] exit_group(0)               = ?
[pid 21215] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21215, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20366", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20366", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20366/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20366/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20366/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20366")                        = 0
mkdir("./20367", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21216
./strace-static-x86_64: Process 21216 attached
[pid 21216] set_robust_list(0x5555589fe660, 24) = 0
[pid 21216] chdir("./20367")            = 0
[pid 21216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21216] setpgid(0, 0)               = 0
[pid 21216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21216] write(3, "1000", 4)         = 4
[pid 21216] close(3)                    = 0
[pid 21216] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21216] write(1, "executing program\n", 18executing program
) = 18
[pid 21216] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21216] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21216] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21216] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21216] exit_group(0)               = ?
[pid 21216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20367", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20367", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20367/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20367/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20367/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20367")                        = 0
mkdir("./20368", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21217
./strace-static-x86_64: Process 21217 attached
[pid 21217] set_robust_list(0x5555589fe660, 24) = 0
[pid 21217] chdir("./20368")            = 0
[pid 21217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21217] setpgid(0, 0)               = 0
[pid 21217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21217] write(3, "1000", 4)         = 4
[pid 21217] close(3)                    = 0
[pid 21217] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21217] write(1, "executing program\n", 18) = 18
[pid 21217] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21217] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21217] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21217] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21217] exit_group(0)               = ?
[pid 21217] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21217, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20368", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20368", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20368/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20368/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20368/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20368")                        = 0
mkdir("./20369", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21218 attached
, child_tidptr=0x5555589fe650) = 21218
[pid 21218] set_robust_list(0x5555589fe660, 24) = 0
[pid 21218] chdir("./20369")            = 0
[pid 21218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21218] setpgid(0, 0)               = 0
[pid 21218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21218] write(3, "1000", 4)         = 4
[pid 21218] close(3)                    = 0
[pid 21218] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21218] write(1, "executing program\n", 18executing program
) = 18
[pid 21218] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21218] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21218] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21218] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21218] exit_group(0)               = ?
[pid 21218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20369", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20369", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20369/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20369/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20369/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20369")                        = 0
mkdir("./20370", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21219
./strace-static-x86_64: Process 21219 attached
[pid 21219] set_robust_list(0x5555589fe660, 24) = 0
[pid 21219] chdir("./20370")            = 0
[pid 21219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21219] setpgid(0, 0)               = 0
[pid 21219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21219] write(3, "1000", 4)         = 4
[pid 21219] close(3)                    = 0
[pid 21219] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21219] write(1, "executing program\n", 18executing program
) = 18
[pid 21219] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21219] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21219] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21219] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21219] exit_group(0)               = ?
[pid 21219] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21219, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20370", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20370", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20370/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20370/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20370/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20370")                        = 0
mkdir("./20371", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21220
./strace-static-x86_64: Process 21220 attached
[pid 21220] set_robust_list(0x5555589fe660, 24) = 0
[pid 21220] chdir("./20371")            = 0
[pid 21220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21220] setpgid(0, 0)               = 0
[pid 21220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21220] write(3, "1000", 4)         = 4
[pid 21220] close(3)                    = 0
[pid 21220] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21220] write(1, "executing program\n", 18executing program
) = 18
[pid 21220] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21220] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21220] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21220] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21220] exit_group(0)               = ?
[pid 21220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20371", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20371", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20371/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20371/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20371/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20371")                        = 0
mkdir("./20372", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21221
./strace-static-x86_64: Process 21221 attached
[pid 21221] set_robust_list(0x5555589fe660, 24) = 0
[pid 21221] chdir("./20372")            = 0
[pid 21221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21221] setpgid(0, 0)               = 0
[pid 21221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21221] write(3, "1000", 4)         = 4
[pid 21221] close(3)                    = 0
[pid 21221] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21221] write(1, "executing program\n", 18executing program
) = 18
[pid 21221] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21221] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21221] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21221] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21221] exit_group(0)               = ?
[pid 21221] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21221, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20372", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20372", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20372/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20372/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20372/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20372")                        = 0
mkdir("./20373", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21222
./strace-static-x86_64: Process 21222 attached
[pid 21222] set_robust_list(0x5555589fe660, 24) = 0
[pid 21222] chdir("./20373")            = 0
[pid 21222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21222] setpgid(0, 0)               = 0
[pid 21222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21222] write(3, "1000", 4)         = 4
[pid 21222] close(3)                    = 0
executing program
[pid 21222] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21222] write(1, "executing program\n", 18) = 18
[pid 21222] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21222] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21222] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21222] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21222] exit_group(0)               = ?
[pid 21222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20373", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20373", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20373/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20373/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20373/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20373")                        = 0
mkdir("./20374", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21223
./strace-static-x86_64: Process 21223 attached
[pid 21223] set_robust_list(0x5555589fe660, 24) = 0
[pid 21223] chdir("./20374")            = 0
[pid 21223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21223] setpgid(0, 0)               = 0
[pid 21223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21223] write(3, "1000", 4)         = 4
[pid 21223] close(3)                    = 0
[pid 21223] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21223] write(1, "executing program\n", 18) = 18
[pid 21223] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21223] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21223] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21223] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21223] exit_group(0)               = ?
[pid 21223] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21223, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20374", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20374", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20374/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20374/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20374/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20374")                        = 0
mkdir("./20375", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21224
./strace-static-x86_64: Process 21224 attached
[pid 21224] set_robust_list(0x5555589fe660, 24) = 0
[pid 21224] chdir("./20375")            = 0
[pid 21224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21224] setpgid(0, 0)               = 0
[pid 21224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21224] write(3, "1000", 4)         = 4
[pid 21224] close(3)                    = 0
[pid 21224] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21224] write(1, "executing program\n", 18executing program
) = 18
[pid 21224] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21224] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21224] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21224] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21224] exit_group(0)               = ?
[pid 21224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20375", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20375", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20375/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20375/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20375/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20375")                        = 0
mkdir("./20376", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21225
./strace-static-x86_64: Process 21225 attached
[pid 21225] set_robust_list(0x5555589fe660, 24) = 0
[pid 21225] chdir("./20376")            = 0
[pid 21225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21225] setpgid(0, 0)               = 0
[pid 21225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21225] write(3, "1000", 4)         = 4
[pid 21225] close(3)                    = 0
[pid 21225] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21225] write(1, "executing program\n", 18executing program
) = 18
[pid 21225] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21225] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21225] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21225] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21225] exit_group(0)               = ?
[pid 21225] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21225, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20376", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20376", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20376/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20376/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20376/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20376")                        = 0
mkdir("./20377", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21226
./strace-static-x86_64: Process 21226 attached
[pid 21226] set_robust_list(0x5555589fe660, 24) = 0
[pid 21226] chdir("./20377")            = 0
[pid 21226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21226] setpgid(0, 0)               = 0
[pid 21226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21226] write(3, "1000", 4)         = 4
[pid 21226] close(3)                    = 0
[pid 21226] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21226] write(1, "executing program\n", 18executing program
) = 18
[pid 21226] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21226] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21226] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21226] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21226] exit_group(0)               = ?
[pid 21226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20377", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20377", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20377/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20377/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20377/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20377")                        = 0
mkdir("./20378", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21227
./strace-static-x86_64: Process 21227 attached
[pid 21227] set_robust_list(0x5555589fe660, 24) = 0
[pid 21227] chdir("./20378")            = 0
[pid 21227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21227] setpgid(0, 0)               = 0
[pid 21227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21227] write(3, "1000", 4)         = 4
[pid 21227] close(3)                    = 0
[pid 21227] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21227] write(1, "executing program\n", 18executing program
) = 18
[pid 21227] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21227] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21227] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21227] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21227] exit_group(0)               = ?
[pid 21227] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21227, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20378", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20378", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20378/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20378/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20378/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20378")                        = 0
mkdir("./20379", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21228
./strace-static-x86_64: Process 21228 attached
[pid 21228] set_robust_list(0x5555589fe660, 24) = 0
[pid 21228] chdir("./20379")            = 0
[pid 21228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21228] setpgid(0, 0)               = 0
[pid 21228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21228] write(3, "1000", 4)         = 4
[pid 21228] close(3)                    = 0
[pid 21228] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21228] write(1, "executing program\n", 18) = 18
[pid 21228] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21228] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21228] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21228] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21228] exit_group(0)               = ?
[pid 21228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21228, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20379", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20379", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20379/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20379/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20379/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20379")                        = 0
mkdir("./20380", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21229
./strace-static-x86_64: Process 21229 attached
[pid 21229] set_robust_list(0x5555589fe660, 24) = 0
[pid 21229] chdir("./20380")            = 0
[pid 21229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21229] setpgid(0, 0)               = 0
[pid 21229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21229] write(3, "1000", 4)         = 4
[pid 21229] close(3)                    = 0
[pid 21229] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21229] write(1, "executing program\n", 18executing program
) = 18
[pid 21229] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21229] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21229] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21229] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21229] exit_group(0)               = ?
[pid 21229] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21229, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20380", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20380", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20380/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20380/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20380/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20380")                        = 0
mkdir("./20381", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21230 attached
, child_tidptr=0x5555589fe650) = 21230
[pid 21230] set_robust_list(0x5555589fe660, 24) = 0
[pid 21230] chdir("./20381")            = 0
[pid 21230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21230] setpgid(0, 0)               = 0
[pid 21230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21230] write(3, "1000", 4)         = 4
[pid 21230] close(3)                    = 0
[pid 21230] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21230] write(1, "executing program\n", 18executing program
) = 18
[pid 21230] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21230] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21230] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21230] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21230] exit_group(0)               = ?
[pid 21230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20381", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20381", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20381/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20381/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20381/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20381")                        = 0
mkdir("./20382", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21231
./strace-static-x86_64: Process 21231 attached
[pid 21231] set_robust_list(0x5555589fe660, 24) = 0
[pid 21231] chdir("./20382")            = 0
[pid 21231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21231] setpgid(0, 0)               = 0
[pid 21231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21231] write(3, "1000", 4)         = 4
[pid 21231] close(3)                    = 0
[pid 21231] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21231] write(1, "executing program\n", 18executing program
) = 18
[pid 21231] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21231] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21231] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21231] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21231] exit_group(0)               = ?
[pid 21231] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21231, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20382", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20382", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20382/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20382/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20382/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20382")                        = 0
mkdir("./20383", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21232
./strace-static-x86_64: Process 21232 attached
[pid 21232] set_robust_list(0x5555589fe660, 24) = 0
[pid 21232] chdir("./20383")            = 0
[pid 21232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21232] setpgid(0, 0)               = 0
[pid 21232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21232] write(3, "1000", 4)         = 4
[pid 21232] close(3)                    = 0
[pid 21232] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21232] write(1, "executing program\n", 18executing program
) = 18
[pid 21232] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21232] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21232] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21232] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21232] exit_group(0)               = ?
[pid 21232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20383", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20383", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20383/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20383/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20383/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20383")                        = 0
mkdir("./20384", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21233
./strace-static-x86_64: Process 21233 attached
[pid 21233] set_robust_list(0x5555589fe660, 24) = 0
[pid 21233] chdir("./20384")            = 0
[pid 21233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21233] setpgid(0, 0)               = 0
[pid 21233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21233] write(3, "1000", 4)         = 4
[pid 21233] close(3)                    = 0
[pid 21233] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21233] write(1, "executing program\n", 18executing program
) = 18
[pid 21233] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21233] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21233] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21233] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21233] exit_group(0)               = ?
[pid 21233] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21233, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20384", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20384", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20384/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20384/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20384/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20384")                        = 0
mkdir("./20385", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21234
./strace-static-x86_64: Process 21234 attached
[pid 21234] set_robust_list(0x5555589fe660, 24) = 0
[pid 21234] chdir("./20385")            = 0
[pid 21234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21234] setpgid(0, 0)               = 0
[pid 21234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21234] write(3, "1000", 4)         = 4
[pid 21234] close(3)                    = 0
[pid 21234] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21234] write(1, "executing program\n", 18executing program
) = 18
[pid 21234] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21234] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21234] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21234] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21234] exit_group(0)               = ?
[pid 21234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20385", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20385", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20385/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20385/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20385/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20385")                        = 0
mkdir("./20386", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21235
./strace-static-x86_64: Process 21235 attached
[pid 21235] set_robust_list(0x5555589fe660, 24) = 0
[pid 21235] chdir("./20386")            = 0
[pid 21235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21235] setpgid(0, 0)               = 0
[pid 21235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21235] write(3, "1000", 4)         = 4
[pid 21235] close(3)                    = 0
[pid 21235] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21235] write(1, "executing program\n", 18) = 18
[pid 21235] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21235] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21235] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21235] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21235] exit_group(0)               = ?
[pid 21235] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21235, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20386", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20386", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20386/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20386/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20386/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20386")                        = 0
mkdir("./20387", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21236
./strace-static-x86_64: Process 21236 attached
[pid 21236] set_robust_list(0x5555589fe660, 24) = 0
[pid 21236] chdir("./20387")            = 0
[pid 21236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21236] setpgid(0, 0)               = 0
[pid 21236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21236] write(3, "1000", 4)         = 4
[pid 21236] close(3)                    = 0
[pid 21236] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21236] write(1, "executing program\n", 18) = 18
[pid 21236] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21236] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21236] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21236] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21236] exit_group(0)               = ?
[pid 21236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20387", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20387", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20387/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20387/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20387/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20387")                        = 0
mkdir("./20388", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21237
./strace-static-x86_64: Process 21237 attached
[pid 21237] set_robust_list(0x5555589fe660, 24) = 0
[pid 21237] chdir("./20388")            = 0
[pid 21237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21237] setpgid(0, 0)               = 0
[pid 21237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21237] write(3, "1000", 4)         = 4
[pid 21237] close(3)                    = 0
[pid 21237] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21237] write(1, "executing program\n", 18executing program
) = 18
[pid 21237] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21237] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21237] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21237] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21237] exit_group(0)               = ?
[pid 21237] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21237, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20388", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20388", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20388/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20388/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20388/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20388")                        = 0
mkdir("./20389", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21238
./strace-static-x86_64: Process 21238 attached
[pid 21238] set_robust_list(0x5555589fe660, 24) = 0
[pid 21238] chdir("./20389")            = 0
[pid 21238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21238] setpgid(0, 0)               = 0
[pid 21238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21238] write(3, "1000", 4)         = 4
[pid 21238] close(3)                    = 0
[pid 21238] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21238] write(1, "executing program\n", 18executing program
) = 18
[pid 21238] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21238] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21238] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21238] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21238] exit_group(0)               = ?
[pid 21238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21238, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20389", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20389", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20389/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20389/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20389/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20389")                        = 0
mkdir("./20390", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21239 attached
, child_tidptr=0x5555589fe650) = 21239
[pid 21239] set_robust_list(0x5555589fe660, 24) = 0
[pid 21239] chdir("./20390")            = 0
[pid 21239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21239] setpgid(0, 0)               = 0
[pid 21239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21239] write(3, "1000", 4)         = 4
[pid 21239] close(3)                    = 0
[pid 21239] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21239] write(1, "executing program\n", 18executing program
) = 18
[pid 21239] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21239] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21239] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21239] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21239] exit_group(0)               = ?
[pid 21239] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21239, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20390", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20390", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20390/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20390/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20390/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20390")                        = 0
mkdir("./20391", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21240
./strace-static-x86_64: Process 21240 attached
[pid 21240] set_robust_list(0x5555589fe660, 24) = 0
[pid 21240] chdir("./20391")            = 0
[pid 21240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21240] setpgid(0, 0)               = 0
[pid 21240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21240] write(3, "1000", 4)         = 4
[pid 21240] close(3)                    = 0
[pid 21240] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21240] write(1, "executing program\n", 18executing program
) = 18
[pid 21240] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21240] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21240] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21240] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21240] exit_group(0)               = ?
[pid 21240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21240, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20391", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20391", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20391/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20391/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20391/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20391")                        = 0
mkdir("./20392", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21241
./strace-static-x86_64: Process 21241 attached
[pid 21241] set_robust_list(0x5555589fe660, 24) = 0
[pid 21241] chdir("./20392")            = 0
[pid 21241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21241] setpgid(0, 0)               = 0
[pid 21241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21241] write(3, "1000", 4)         = 4
[pid 21241] close(3)                    = 0
[pid 21241] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21241] write(1, "executing program\n", 18executing program
) = 18
[pid 21241] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21241] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21241] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21241] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21241] exit_group(0)               = ?
[pid 21241] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21241, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20392", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20392", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20392/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20392/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20392/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20392")                        = 0
mkdir("./20393", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21242
./strace-static-x86_64: Process 21242 attached
[pid 21242] set_robust_list(0x5555589fe660, 24) = 0
[pid 21242] chdir("./20393")            = 0
[pid 21242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21242] setpgid(0, 0)               = 0
[pid 21242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21242] write(3, "1000", 4)         = 4
[pid 21242] close(3)                    = 0
[pid 21242] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21242] write(1, "executing program\n", 18) = 18
[pid 21242] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21242] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21242] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21242] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21242] exit_group(0)               = ?
[pid 21242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20393", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20393", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20393/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20393/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20393/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20393")                        = 0
mkdir("./20394", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21243
./strace-static-x86_64: Process 21243 attached
[pid 21243] set_robust_list(0x5555589fe660, 24) = 0
[pid 21243] chdir("./20394")            = 0
[pid 21243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21243] setpgid(0, 0)               = 0
[pid 21243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21243] write(3, "1000", 4)         = 4
[pid 21243] close(3)                    = 0
[pid 21243] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21243] write(1, "executing program\n", 18executing program
) = 18
[pid 21243] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21243] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21243] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21243] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21243] exit_group(0)               = ?
[pid 21243] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21243, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20394", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20394", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20394/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20394/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20394/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20394")                        = 0
mkdir("./20395", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21244
./strace-static-x86_64: Process 21244 attached
[pid 21244] set_robust_list(0x5555589fe660, 24) = 0
[pid 21244] chdir("./20395")            = 0
[pid 21244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21244] setpgid(0, 0)               = 0
[pid 21244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21244] write(3, "1000", 4)         = 4
[pid 21244] close(3)                    = 0
[pid 21244] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21244] write(1, "executing program\n", 18executing program
) = 18
[pid 21244] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21244] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21244] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21244] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21244] exit_group(0)               = ?
[pid 21244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20395", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20395", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20395/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20395/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20395/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20395")                        = 0
mkdir("./20396", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21245 attached
, child_tidptr=0x5555589fe650) = 21245
[pid 21245] set_robust_list(0x5555589fe660, 24) = 0
[pid 21245] chdir("./20396")            = 0
[pid 21245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21245] setpgid(0, 0)               = 0
[pid 21245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21245] write(3, "1000", 4)         = 4
[pid 21245] close(3)                    = 0
[pid 21245] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21245] write(1, "executing program\n", 18executing program
) = 18
[pid 21245] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21245] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21245] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21245] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21245] exit_group(0)               = ?
[pid 21245] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21245, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20396", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20396", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20396/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20396/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20396/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20396")                        = 0
mkdir("./20397", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21246
./strace-static-x86_64: Process 21246 attached
[pid 21246] set_robust_list(0x5555589fe660, 24) = 0
[pid 21246] chdir("./20397")            = 0
[pid 21246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21246] setpgid(0, 0)               = 0
[pid 21246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21246] write(3, "1000", 4)         = 4
[pid 21246] close(3)                    = 0
[pid 21246] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21246] write(1, "executing program\n", 18executing program
) = 18
[pid 21246] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21246] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21246] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21246] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21246] exit_group(0)               = ?
[pid 21246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20397", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20397", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20397/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20397/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20397/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20397")                        = 0
mkdir("./20398", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21247
./strace-static-x86_64: Process 21247 attached
[pid 21247] set_robust_list(0x5555589fe660, 24) = 0
[pid 21247] chdir("./20398")            = 0
[pid 21247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21247] setpgid(0, 0)               = 0
[pid 21247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21247] write(3, "1000", 4)         = 4
[pid 21247] close(3)                    = 0
[pid 21247] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21247] write(1, "executing program\n", 18executing program
) = 18
[pid 21247] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21247] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21247] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21247] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21247] exit_group(0)               = ?
[pid 21247] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21247, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20398", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20398", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20398/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20398/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20398/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20398")                        = 0
mkdir("./20399", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21248
./strace-static-x86_64: Process 21248 attached
[pid 21248] set_robust_list(0x5555589fe660, 24) = 0
[pid 21248] chdir("./20399")            = 0
[pid 21248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21248] setpgid(0, 0)               = 0
[pid 21248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21248] write(3, "1000", 4)         = 4
[pid 21248] close(3)                    = 0
[pid 21248] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21248] write(1, "executing program\n", 18executing program
) = 18
[pid 21248] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21248] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21248] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21248] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21248] exit_group(0)               = ?
[pid 21248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20399", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20399", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20399/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20399/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20399/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20399")                        = 0
mkdir("./20400", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21249
./strace-static-x86_64: Process 21249 attached
[pid 21249] set_robust_list(0x5555589fe660, 24) = 0
[pid 21249] chdir("./20400")            = 0
[pid 21249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21249] setpgid(0, 0)               = 0
[pid 21249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21249] write(3, "1000", 4)         = 4
[pid 21249] close(3)                    = 0
[pid 21249] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21249] write(1, "executing program\n", 18) = 18
[pid 21249] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21249] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21249] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21249] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21249] exit_group(0)               = ?
[pid 21249] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21249, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20400", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20400", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20400/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20400/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20400/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20400")                        = 0
mkdir("./20401", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21250
./strace-static-x86_64: Process 21250 attached
[pid 21250] set_robust_list(0x5555589fe660, 24) = 0
[pid 21250] chdir("./20401")            = 0
[pid 21250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21250] setpgid(0, 0)               = 0
[pid 21250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21250] write(3, "1000", 4)         = 4
[pid 21250] close(3)                    = 0
[pid 21250] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21250] write(1, "executing program\n", 18executing program
) = 18
[pid 21250] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21250] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21250] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21250] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21250] exit_group(0)               = ?
[pid 21250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21250, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20401", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20401", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20401/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20401/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20401/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20401")                        = 0
mkdir("./20402", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21251
./strace-static-x86_64: Process 21251 attached
[pid 21251] set_robust_list(0x5555589fe660, 24) = 0
[pid 21251] chdir("./20402")            = 0
[pid 21251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21251] setpgid(0, 0)               = 0
[pid 21251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21251] write(3, "1000", 4)         = 4
[pid 21251] close(3)                    = 0
[pid 21251] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21251] write(1, "executing program\n", 18executing program
) = 18
[pid 21251] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21251] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21251] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21251] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21251] exit_group(0)               = ?
[pid 21251] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21251, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20402", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20402", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20402/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20402/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20402/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20402")                        = 0
mkdir("./20403", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21252
./strace-static-x86_64: Process 21252 attached
[pid 21252] set_robust_list(0x5555589fe660, 24) = 0
[pid 21252] chdir("./20403")            = 0
[pid 21252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21252] setpgid(0, 0)               = 0
[pid 21252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21252] write(3, "1000", 4)         = 4
[pid 21252] close(3)                    = 0
[pid 21252] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21252] write(1, "executing program\n", 18executing program
) = 18
[pid 21252] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21252] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21252] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21252] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21252] exit_group(0)               = ?
[pid 21252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20403", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20403", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20403/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20403/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20403/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20403")                        = 0
mkdir("./20404", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21253
./strace-static-x86_64: Process 21253 attached
[pid 21253] set_robust_list(0x5555589fe660, 24) = 0
[pid 21253] chdir("./20404")            = 0
[pid 21253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21253] setpgid(0, 0)               = 0
[pid 21253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21253] write(3, "1000", 4)         = 4
[pid 21253] close(3)                    = 0
[pid 21253] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21253] write(1, "executing program\n", 18executing program
) = 18
[pid 21253] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21253] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21253] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21253] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21253] exit_group(0)               = ?
[pid 21253] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21253, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20404", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20404", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20404/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20404/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20404/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20404")                        = 0
mkdir("./20405", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21254
./strace-static-x86_64: Process 21254 attached
[pid 21254] set_robust_list(0x5555589fe660, 24) = 0
[pid 21254] chdir("./20405")            = 0
[pid 21254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21254] setpgid(0, 0)               = 0
[pid 21254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21254] write(3, "1000", 4)         = 4
[pid 21254] close(3)                    = 0
[pid 21254] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21254] write(1, "executing program\n", 18executing program
) = 18
[pid 21254] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21254] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21254] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21254] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21254] exit_group(0)               = ?
[pid 21254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20405", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20405", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20405/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20405/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20405/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20405")                        = 0
mkdir("./20406", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21255
./strace-static-x86_64: Process 21255 attached
[pid 21255] set_robust_list(0x5555589fe660, 24) = 0
[pid 21255] chdir("./20406")            = 0
[pid 21255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21255] setpgid(0, 0)               = 0
[pid 21255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21255] write(3, "1000", 4)         = 4
[pid 21255] close(3)                    = 0
[pid 21255] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21255] write(1, "executing program\n", 18executing program
) = 18
[pid 21255] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21255] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21255] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21255] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21255] exit_group(0)               = ?
[pid 21255] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21255, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20406", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20406", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20406/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20406/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20406/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20406")                        = 0
mkdir("./20407", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21256
./strace-static-x86_64: Process 21256 attached
[pid 21256] set_robust_list(0x5555589fe660, 24) = 0
[pid 21256] chdir("./20407")            = 0
[pid 21256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21256] setpgid(0, 0)               = 0
[pid 21256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21256] write(3, "1000", 4)         = 4
[pid 21256] close(3)                    = 0
[pid 21256] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21256] write(1, "executing program\n", 18executing program
) = 18
[pid 21256] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21256] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21256] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21256] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21256] exit_group(0)               = ?
[pid 21256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20407", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20407", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20407/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20407/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20407/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20407")                        = 0
mkdir("./20408", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21257
./strace-static-x86_64: Process 21257 attached
[pid 21257] set_robust_list(0x5555589fe660, 24) = 0
[pid 21257] chdir("./20408")            = 0
[pid 21257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21257] setpgid(0, 0)               = 0
[pid 21257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21257] write(3, "1000", 4)         = 4
[pid 21257] close(3)                    = 0
[pid 21257] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21257] write(1, "executing program\n", 18) = 18
[pid 21257] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21257] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21257] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21257] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21257] exit_group(0)               = ?
[pid 21257] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21257, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20408", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20408", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20408/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20408/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20408/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20408")                        = 0
mkdir("./20409", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21258
./strace-static-x86_64: Process 21258 attached
[pid 21258] set_robust_list(0x5555589fe660, 24) = 0
[pid 21258] chdir("./20409")            = 0
[pid 21258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21258] setpgid(0, 0)               = 0
[pid 21258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21258] write(3, "1000", 4)         = 4
[pid 21258] close(3)                    = 0
[pid 21258] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21258] write(1, "executing program\n", 18executing program
) = 18
[pid 21258] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21258] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21258] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21258] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21258] exit_group(0)               = ?
[pid 21258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20409", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20409", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20409/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20409/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20409/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20409")                        = 0
mkdir("./20410", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21259 attached
 <unfinished ...>
[pid 21259] set_robust_list(0x5555589fe660, 24) = 0
[pid 21259] chdir("./20410")            = 0
[pid 21259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21259] setpgid(0, 0)               = 0
[pid 21259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21259
[pid 21259] <... openat resumed>)       = 3
[pid 21259] write(3, "1000", 4)         = 4
[pid 21259] close(3)                    = 0
executing program
[pid 21259] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21259] write(1, "executing program\n", 18) = 18
[pid 21259] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21259] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21259] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21259] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21259] exit_group(0)               = ?
[pid 21259] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21259, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20410", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20410", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20410/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20410/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20410/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20410")                        = 0
mkdir("./20411", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21260
./strace-static-x86_64: Process 21260 attached
[pid 21260] set_robust_list(0x5555589fe660, 24) = 0
[pid 21260] chdir("./20411")            = 0
[pid 21260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21260] setpgid(0, 0)               = 0
[pid 21260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21260] write(3, "1000", 4)         = 4
[pid 21260] close(3)                    = 0
[pid 21260] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21260] write(1, "executing program\n", 18executing program
) = 18
[pid 21260] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21260] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21260] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21260] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21260] exit_group(0)               = ?
[pid 21260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20411", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20411", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20411/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20411/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20411/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20411")                        = 0
mkdir("./20412", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21261 attached
 <unfinished ...>
[pid 21261] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21261
[pid 21261] chdir("./20412")            = 0
[pid 21261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21261] setpgid(0, 0)               = 0
[pid 21261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21261] write(3, "1000", 4)         = 4
[pid 21261] close(3)                    = 0
[pid 21261] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21261] write(1, "executing program\n", 18executing program
) = 18
[pid 21261] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21261] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21261] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21261] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21261] exit_group(0)               = ?
[pid 21261] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21261, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20412", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20412", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20412/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20412/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20412/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20412")                        = 0
mkdir("./20413", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21262
./strace-static-x86_64: Process 21262 attached
[pid 21262] set_robust_list(0x5555589fe660, 24) = 0
[pid 21262] chdir("./20413")            = 0
[pid 21262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21262] setpgid(0, 0)               = 0
[pid 21262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21262] write(3, "1000", 4)         = 4
[pid 21262] close(3)                    = 0
[pid 21262] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21262] write(1, "executing program\n", 18) = 18
[pid 21262] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21262] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21262] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21262] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21262] exit_group(0)               = ?
[pid 21262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20413", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20413", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20413/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20413/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20413/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20413")                        = 0
mkdir("./20414", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21263
./strace-static-x86_64: Process 21263 attached
[pid 21263] set_robust_list(0x5555589fe660, 24) = 0
[pid 21263] chdir("./20414")            = 0
[pid 21263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21263] setpgid(0, 0)               = 0
[pid 21263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21263] write(3, "1000", 4)         = 4
[pid 21263] close(3)                    = 0
[pid 21263] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21263] write(1, "executing program\n", 18) = 18
[pid 21263] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21263] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21263] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21263] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21263] exit_group(0)               = ?
[pid 21263] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21263, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20414", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20414", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20414/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20414/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20414/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20414")                        = 0
mkdir("./20415", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21264 attached
, child_tidptr=0x5555589fe650) = 21264
[pid 21264] set_robust_list(0x5555589fe660, 24) = 0
[pid 21264] chdir("./20415")            = 0
[pid 21264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21264] setpgid(0, 0)               = 0
[pid 21264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21264] write(3, "1000", 4)         = 4
[pid 21264] close(3)                    = 0
[pid 21264] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21264] write(1, "executing program\n", 18) = 18
[pid 21264] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21264] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21264] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21264] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21264] exit_group(0)               = ?
[pid 21264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21264, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20415", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20415", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20415/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20415/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20415/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20415")                        = 0
mkdir("./20416", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21265
./strace-static-x86_64: Process 21265 attached
[pid 21265] set_robust_list(0x5555589fe660, 24) = 0
[pid 21265] chdir("./20416")            = 0
[pid 21265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21265] setpgid(0, 0)               = 0
[pid 21265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21265] write(3, "1000", 4)         = 4
[pid 21265] close(3)                    = 0
[pid 21265] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21265] write(1, "executing program\n", 18executing program
) = 18
[pid 21265] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21265] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21265] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21265] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21265] exit_group(0)               = ?
[pid 21265] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21265, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20416", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20416", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20416/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20416/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20416/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20416")                        = 0
mkdir("./20417", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21267
./strace-static-x86_64: Process 21267 attached
[pid 21267] set_robust_list(0x5555589fe660, 24) = 0
[pid 21267] chdir("./20417")            = 0
[pid 21267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21267] setpgid(0, 0)               = 0
[pid 21267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21267] write(3, "1000", 4)         = 4
[pid 21267] close(3)                    = 0
[pid 21267] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21267] write(1, "executing program\n", 18executing program
) = 18
[pid 21267] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21267] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21267] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21267] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21267] exit_group(0)               = ?
[pid 21267] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21267, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20417", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20417", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20417/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20417/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20417/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20417")                        = 0
mkdir("./20418", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21268 attached
 <unfinished ...>
[pid 21268] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21268
[pid 21268] chdir("./20418")            = 0
[pid 21268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21268] setpgid(0, 0)               = 0
[pid 21268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21268] write(3, "1000", 4)         = 4
[pid 21268] close(3)                    = 0
[pid 21268] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21268] write(1, "executing program\n", 18executing program
) = 18
[pid 21268] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21268] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21268] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21268] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21268] exit_group(0)               = ?
[pid 21268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20418", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20418", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20418/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20418/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20418/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20418")                        = 0
mkdir("./20419", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21269
./strace-static-x86_64: Process 21269 attached
[pid 21269] set_robust_list(0x5555589fe660, 24) = 0
[pid 21269] chdir("./20419")            = 0
[pid 21269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21269] setpgid(0, 0)               = 0
[pid 21269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21269] write(3, "1000", 4)         = 4
[pid 21269] close(3)                    = 0
[pid 21269] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21269] write(1, "executing program\n", 18) = 18
[pid 21269] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21269] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21269] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21269] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21269] exit_group(0)               = ?
[pid 21269] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21269, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20419", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20419", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20419/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20419/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20419/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20419")                        = 0
mkdir("./20420", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21270
./strace-static-x86_64: Process 21270 attached
[pid 21270] set_robust_list(0x5555589fe660, 24) = 0
[pid 21270] chdir("./20420")            = 0
[pid 21270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21270] setpgid(0, 0)               = 0
[pid 21270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21270] write(3, "1000", 4)         = 4
[pid 21270] close(3)                    = 0
[pid 21270] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21270] write(1, "executing program\n", 18) = 18
[pid 21270] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21270] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21270] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21270] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21270] exit_group(0)               = ?
[pid 21270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21270, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20420", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20420", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20420/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20420/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20420/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20420")                        = 0
mkdir("./20421", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21271
./strace-static-x86_64: Process 21271 attached
[pid 21271] set_robust_list(0x5555589fe660, 24) = 0
[pid 21271] chdir("./20421")            = 0
[pid 21271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21271] setpgid(0, 0)               = 0
[pid 21271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21271] write(3, "1000", 4)         = 4
[pid 21271] close(3)                    = 0
[pid 21271] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21271] write(1, "executing program\n", 18) = 18
[pid 21271] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21271] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21271] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21271] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21271] exit_group(0)               = ?
[pid 21271] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21271, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20421", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20421", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20421/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20421/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20421/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20421")                        = 0
mkdir("./20422", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21272
./strace-static-x86_64: Process 21272 attached
[pid 21272] set_robust_list(0x5555589fe660, 24) = 0
[pid 21272] chdir("./20422")            = 0
[pid 21272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21272] setpgid(0, 0)               = 0
[pid 21272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21272] write(3, "1000", 4)         = 4
[pid 21272] close(3)                    = 0
[pid 21272] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21272] write(1, "executing program\n", 18executing program
) = 18
[pid 21272] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21272] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21272] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21272] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21272] exit_group(0)               = ?
[pid 21272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20422", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20422", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20422/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20422/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20422/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20422")                        = 0
mkdir("./20423", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21273
./strace-static-x86_64: Process 21273 attached
[pid 21273] set_robust_list(0x5555589fe660, 24) = 0
[pid 21273] chdir("./20423")            = 0
[pid 21273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21273] setpgid(0, 0)               = 0
[pid 21273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21273] write(3, "1000", 4)         = 4
[pid 21273] close(3)                    = 0
[pid 21273] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21273] write(1, "executing program\n", 18executing program
) = 18
[pid 21273] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21273] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21273] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21273] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21273] exit_group(0)               = ?
[pid 21273] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21273, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20423", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20423", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20423/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20423/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20423/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20423")                        = 0
mkdir("./20424", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21274
./strace-static-x86_64: Process 21274 attached
[pid 21274] set_robust_list(0x5555589fe660, 24) = 0
[pid 21274] chdir("./20424")            = 0
[pid 21274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21274] setpgid(0, 0)               = 0
[pid 21274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21274] write(3, "1000", 4)         = 4
[pid 21274] close(3)                    = 0
[pid 21274] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21274] write(1, "executing program\n", 18) = 18
[pid 21274] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21274] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21274] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21274] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21274] exit_group(0)               = ?
[pid 21274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20424", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20424", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20424/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20424/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20424/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20424")                        = 0
mkdir("./20425", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21275
./strace-static-x86_64: Process 21275 attached
[pid 21275] set_robust_list(0x5555589fe660, 24) = 0
[pid 21275] chdir("./20425")            = 0
[pid 21275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21275] setpgid(0, 0)               = 0
[pid 21275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21275] write(3, "1000", 4)         = 4
[pid 21275] close(3)                    = 0
[pid 21275] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21275] write(1, "executing program\n", 18executing program
) = 18
[pid 21275] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21275] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21275] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21275] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21275] exit_group(0)               = ?
[pid 21275] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21275, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20425", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20425", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20425/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20425/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20425/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20425")                        = 0
mkdir("./20426", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21276
./strace-static-x86_64: Process 21276 attached
[pid 21276] set_robust_list(0x5555589fe660, 24) = 0
[pid 21276] chdir("./20426")            = 0
[pid 21276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21276] setpgid(0, 0)               = 0
[pid 21276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21276] write(3, "1000", 4)         = 4
[pid 21276] close(3)                    = 0
[pid 21276] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21276] write(1, "executing program\n", 18) = 18
[pid 21276] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21276] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21276] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21276] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21276] exit_group(0)               = ?
[pid 21276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20426", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20426", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20426/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20426/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20426/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20426")                        = 0
mkdir("./20427", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21277
./strace-static-x86_64: Process 21277 attached
[pid 21277] set_robust_list(0x5555589fe660, 24) = 0
[pid 21277] chdir("./20427")            = 0
[pid 21277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21277] setpgid(0, 0)               = 0
[pid 21277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21277] write(3, "1000", 4)         = 4
[pid 21277] close(3)                    = 0
[pid 21277] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21277] write(1, "executing program\n", 18) = 18
[pid 21277] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21277] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21277] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21277] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21277] exit_group(0)               = ?
[pid 21277] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21277, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20427", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20427", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20427/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20427/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20427/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20427")                        = 0
mkdir("./20428", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21278 attached
 <unfinished ...>
[pid 21278] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21278
[pid 21278] chdir("./20428")            = 0
[pid 21278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21278] setpgid(0, 0)               = 0
[pid 21278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21278] write(3, "1000", 4)         = 4
[pid 21278] close(3)                    = 0
[pid 21278] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21278] write(1, "executing program\n", 18) = 18
[pid 21278] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21278] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21278] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21278] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21278] exit_group(0)               = ?
[pid 21278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20428", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20428", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20428/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20428/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20428/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20428")                        = 0
mkdir("./20429", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21279
./strace-static-x86_64: Process 21279 attached
[pid 21279] set_robust_list(0x5555589fe660, 24) = 0
[pid 21279] chdir("./20429")            = 0
[pid 21279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21279] setpgid(0, 0)               = 0
[pid 21279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21279] write(3, "1000", 4)         = 4
[pid 21279] close(3)                    = 0
[pid 21279] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21279] write(1, "executing program\n", 18executing program
) = 18
[pid 21279] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21279] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21279] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21279] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21279] exit_group(0)               = ?
[pid 21279] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21279, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20429", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20429", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20429/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20429/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20429/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20429")                        = 0
mkdir("./20430", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21280
./strace-static-x86_64: Process 21280 attached
[pid 21280] set_robust_list(0x5555589fe660, 24) = 0
[pid 21280] chdir("./20430")            = 0
[pid 21280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21280] setpgid(0, 0)               = 0
[pid 21280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21280] write(3, "1000", 4)         = 4
[pid 21280] close(3)                    = 0
[pid 21280] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21280] write(1, "executing program\n", 18) = 18
[pid 21280] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21280] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21280] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21280] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21280] exit_group(0)               = ?
[pid 21280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20430", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20430", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20430/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20430/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20430/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20430")                        = 0
mkdir("./20431", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21281
./strace-static-x86_64: Process 21281 attached
[pid 21281] set_robust_list(0x5555589fe660, 24) = 0
[pid 21281] chdir("./20431")            = 0
[pid 21281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21281] setpgid(0, 0)               = 0
[pid 21281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21281] write(3, "1000", 4)         = 4
[pid 21281] close(3)                    = 0
[pid 21281] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21281] write(1, "executing program\n", 18) = 18
[pid 21281] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21281] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21281] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21281] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21281] exit_group(0)               = ?
[pid 21281] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21281, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20431", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20431", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20431/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20431/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20431/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20431")                        = 0
mkdir("./20432", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21282
./strace-static-x86_64: Process 21282 attached
[pid 21282] set_robust_list(0x5555589fe660, 24) = 0
[pid 21282] chdir("./20432")            = 0
[pid 21282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21282] setpgid(0, 0)               = 0
[pid 21282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21282] write(3, "1000", 4)         = 4
[pid 21282] close(3)                    = 0
[pid 21282] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21282] write(1, "executing program\n", 18) = 18
[pid 21282] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21282] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21282] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21282] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21282] exit_group(0)               = ?
[pid 21282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20432", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20432", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20432/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20432/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20432/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20432")                        = 0
mkdir("./20433", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21283
./strace-static-x86_64: Process 21283 attached
[pid 21283] set_robust_list(0x5555589fe660, 24) = 0
[pid 21283] chdir("./20433")            = 0
[pid 21283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21283] setpgid(0, 0)               = 0
[pid 21283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21283] write(3, "1000", 4)         = 4
[pid 21283] close(3)                    = 0
[pid 21283] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21283] write(1, "executing program\n", 18executing program
) = 18
[pid 21283] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21283] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21283] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21283] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21283] exit_group(0)               = ?
[pid 21283] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21283, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20433", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20433", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20433/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20433/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20433/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20433")                        = 0
mkdir("./20434", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21284
./strace-static-x86_64: Process 21284 attached
[pid 21284] set_robust_list(0x5555589fe660, 24) = 0
[pid 21284] chdir("./20434")            = 0
[pid 21284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21284] setpgid(0, 0)               = 0
[pid 21284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21284] write(3, "1000", 4)         = 4
[pid 21284] close(3)                    = 0
[pid 21284] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21284] write(1, "executing program\n", 18executing program
) = 18
[pid 21284] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21284] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21284] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21284] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21284] exit_group(0)               = ?
[pid 21284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20434", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20434", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20434/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20434/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20434/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20434")                        = 0
mkdir("./20435", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21285
./strace-static-x86_64: Process 21285 attached
[pid 21285] set_robust_list(0x5555589fe660, 24) = 0
[pid 21285] chdir("./20435")            = 0
[pid 21285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21285] setpgid(0, 0)               = 0
[pid 21285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21285] write(3, "1000", 4)         = 4
[pid 21285] close(3)                    = 0
[pid 21285] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21285] write(1, "executing program\n", 18) = 18
[pid 21285] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21285] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21285] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21285] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21285] exit_group(0)               = ?
[pid 21285] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21285, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20435", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20435", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20435/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20435/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20435/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20435")                        = 0
mkdir("./20436", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21286 attached
, child_tidptr=0x5555589fe650) = 21286
[pid 21286] set_robust_list(0x5555589fe660, 24) = 0
[pid 21286] chdir("./20436")            = 0
[pid 21286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21286] setpgid(0, 0)               = 0
[pid 21286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21286] write(3, "1000", 4)         = 4
[pid 21286] close(3)                    = 0
[pid 21286] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21286] write(1, "executing program\n", 18) = 18
[pid 21286] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21286] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21286] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21286] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21286] exit_group(0)               = ?
[pid 21286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20436", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20436", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20436/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20436/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20436/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20436")                        = 0
mkdir("./20437", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21287 attached
 <unfinished ...>
[pid 21287] set_robust_list(0x5555589fe660, 24) = 0
[pid 21287] chdir("./20437")            = 0
[pid 21287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21287] setpgid(0, 0)               = 0
[pid 21287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21287
[pid 21287] write(3, "1000", 4)         = 4
[pid 21287] close(3)                    = 0
[pid 21287] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21287] write(1, "executing program\n", 18) = 18
[pid 21287] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21287] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21287] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21287] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21287] exit_group(0)               = ?
[pid 21287] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21287, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20437", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20437", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20437/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20437/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20437/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20437")                        = 0
mkdir("./20438", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21288 attached
 <unfinished ...>
[pid 21288] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21288
[pid 21288] chdir("./20438")            = 0
[pid 21288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21288] setpgid(0, 0)               = 0
[pid 21288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21288] write(3, "1000", 4)         = 4
[pid 21288] close(3)                    = 0
[pid 21288] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21288] write(1, "executing program\n", 18executing program
) = 18
[pid 21288] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21288] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21288] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21288] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21288] exit_group(0)               = ?
[pid 21288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20438", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20438", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20438/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20438/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20438/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20438")                        = 0
mkdir("./20439", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21289
./strace-static-x86_64: Process 21289 attached
[pid 21289] set_robust_list(0x5555589fe660, 24) = 0
[pid 21289] chdir("./20439")            = 0
[pid 21289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21289] setpgid(0, 0)               = 0
[pid 21289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21289] write(3, "1000", 4)         = 4
[pid 21289] close(3)                    = 0
[pid 21289] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21289] write(1, "executing program\n", 18executing program
) = 18
[pid 21289] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21289] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21289] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21289] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21289] exit_group(0)               = ?
[pid 21289] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21289, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20439", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20439", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20439/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20439/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20439/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20439")                        = 0
mkdir("./20440", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21290
./strace-static-x86_64: Process 21290 attached
[pid 21290] set_robust_list(0x5555589fe660, 24) = 0
[pid 21290] chdir("./20440")            = 0
[pid 21290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21290] setpgid(0, 0)               = 0
[pid 21290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21290] write(3, "1000", 4)         = 4
[pid 21290] close(3)                    = 0
[pid 21290] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21290] write(1, "executing program\n", 18executing program
) = 18
[pid 21290] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21290] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21290] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21290] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21290] exit_group(0)               = ?
[pid 21290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20440", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20440", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20440/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20440/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20440/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20440")                        = 0
mkdir("./20441", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21291
./strace-static-x86_64: Process 21291 attached
[pid 21291] set_robust_list(0x5555589fe660, 24) = 0
[pid 21291] chdir("./20441")            = 0
[pid 21291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21291] setpgid(0, 0)               = 0
[pid 21291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21291] write(3, "1000", 4)         = 4
[pid 21291] close(3)                    = 0
[pid 21291] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21291] write(1, "executing program\n", 18executing program
) = 18
[pid 21291] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21291] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21291] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21291] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21291] exit_group(0)               = ?
[pid 21291] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21291, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20441", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20441", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20441/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20441/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20441/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20441")                        = 0
mkdir("./20442", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21292 attached
 <unfinished ...>
[pid 21292] set_robust_list(0x5555589fe660, 24) = 0
[pid 21292] chdir("./20442" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21292
[pid 21292] <... chdir resumed>)        = 0
[pid 21292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21292] setpgid(0, 0)               = 0
[pid 21292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21292] write(3, "1000", 4)         = 4
[pid 21292] close(3)                    = 0
[pid 21292] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21292] write(1, "executing program\n", 18executing program
) = 18
[pid 21292] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21292] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21292] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21292] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21292] exit_group(0)               = ?
[pid 21292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20442", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20442", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20442/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20442/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20442/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20442")                        = 0
mkdir("./20443", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21293
./strace-static-x86_64: Process 21293 attached
[pid 21293] set_robust_list(0x5555589fe660, 24) = 0
[pid 21293] chdir("./20443")            = 0
[pid 21293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21293] setpgid(0, 0)               = 0
[pid 21293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21293] write(3, "1000", 4)         = 4
[pid 21293] close(3)                    = 0
[pid 21293] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21293] write(1, "executing program\n", 18) = 18
[pid 21293] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21293] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21293] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21293] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21293] exit_group(0)               = ?
[pid 21293] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21293, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20443", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20443", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20443/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20443/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20443/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20443")                        = 0
mkdir("./20444", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21294
./strace-static-x86_64: Process 21294 attached
[pid 21294] set_robust_list(0x5555589fe660, 24) = 0
[pid 21294] chdir("./20444")            = 0
[pid 21294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21294] setpgid(0, 0)               = 0
[pid 21294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21294] write(3, "1000", 4)         = 4
[pid 21294] close(3)                    = 0
[pid 21294] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21294] write(1, "executing program\n", 18executing program
) = 18
[pid 21294] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21294] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21294] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21294] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21294] exit_group(0)               = ?
[pid 21294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20444", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20444", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20444/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20444/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20444/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20444")                        = 0
mkdir("./20445", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21295
./strace-static-x86_64: Process 21295 attached
[pid 21295] set_robust_list(0x5555589fe660, 24) = 0
[pid 21295] chdir("./20445")            = 0
[pid 21295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21295] setpgid(0, 0)               = 0
[pid 21295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21295] write(3, "1000", 4)         = 4
[pid 21295] close(3)                    = 0
[pid 21295] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21295] write(1, "executing program\n", 18executing program
) = 18
[pid 21295] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21295] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21295] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21295] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21295] exit_group(0)               = ?
[pid 21295] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21295, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20445", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20445", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20445/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20445/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20445/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20445")                        = 0
mkdir("./20446", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21296
./strace-static-x86_64: Process 21296 attached
[pid 21296] set_robust_list(0x5555589fe660, 24) = 0
[pid 21296] chdir("./20446")            = 0
[pid 21296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21296] setpgid(0, 0)               = 0
[pid 21296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21296] write(3, "1000", 4)         = 4
[pid 21296] close(3)                    = 0
[pid 21296] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21296] write(1, "executing program\n", 18executing program
) = 18
[pid 21296] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21296] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21296] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21296] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21296] exit_group(0)               = ?
[pid 21296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20446", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20446", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20446/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20446/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20446/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20446")                        = 0
mkdir("./20447", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21297 attached
 <unfinished ...>
[pid 21297] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21297
[pid 21297] chdir("./20447")            = 0
[pid 21297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21297] setpgid(0, 0)               = 0
[pid 21297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21297] write(3, "1000", 4)         = 4
[pid 21297] close(3)                    = 0
[pid 21297] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21297] write(1, "executing program\n", 18executing program
) = 18
[pid 21297] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21297] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21297] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21297] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21297] exit_group(0)               = ?
[pid 21297] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21297, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20447", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20447", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20447/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20447/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20447/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20447")                        = 0
mkdir("./20448", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21298
./strace-static-x86_64: Process 21298 attached
[pid 21298] set_robust_list(0x5555589fe660, 24) = 0
[pid 21298] chdir("./20448")            = 0
[pid 21298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21298] setpgid(0, 0)               = 0
[pid 21298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21298] write(3, "1000", 4)         = 4
[pid 21298] close(3)                    = 0
[pid 21298] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21298] write(1, "executing program\n", 18executing program
) = 18
[pid 21298] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21298] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21298] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21298] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21298] exit_group(0)               = ?
[pid 21298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20448", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20448", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20448/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20448/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20448/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20448")                        = 0
mkdir("./20449", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21299
./strace-static-x86_64: Process 21299 attached
[pid 21299] set_robust_list(0x5555589fe660, 24) = 0
[pid 21299] chdir("./20449")            = 0
[pid 21299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21299] setpgid(0, 0)               = 0
[pid 21299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21299] write(3, "1000", 4)         = 4
[pid 21299] close(3)                    = 0
[pid 21299] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21299] write(1, "executing program\n", 18executing program
) = 18
[pid 21299] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21299] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21299] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21299] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21299] exit_group(0)               = ?
[pid 21299] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21299, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20449", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20449", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20449/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20449/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20449/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20449")                        = 0
mkdir("./20450", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21300
./strace-static-x86_64: Process 21300 attached
[pid 21300] set_robust_list(0x5555589fe660, 24) = 0
[pid 21300] chdir("./20450")            = 0
[pid 21300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21300] setpgid(0, 0)               = 0
[pid 21300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21300] write(3, "1000", 4)         = 4
[pid 21300] close(3)                    = 0
[pid 21300] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21300] write(1, "executing program\n", 18) = 18
[pid 21300] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21300] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21300] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21300] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21300] exit_group(0)               = ?
[pid 21300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21300, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20450", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20450", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20450/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20450/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20450/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20450")                        = 0
mkdir("./20451", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21301
./strace-static-x86_64: Process 21301 attached
[pid 21301] set_robust_list(0x5555589fe660, 24) = 0
[pid 21301] chdir("./20451")            = 0
[pid 21301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21301] setpgid(0, 0)               = 0
[pid 21301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21301] write(3, "1000", 4)         = 4
[pid 21301] close(3)                    = 0
[pid 21301] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21301] write(1, "executing program\n", 18executing program
) = 18
[pid 21301] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21301] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21301] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21301] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21301] exit_group(0)               = ?
[pid 21301] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21301, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20451", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20451", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20451/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20451/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20451/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20451")                        = 0
mkdir("./20452", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21302
./strace-static-x86_64: Process 21302 attached
[pid 21302] set_robust_list(0x5555589fe660, 24) = 0
[pid 21302] chdir("./20452")            = 0
[pid 21302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21302] setpgid(0, 0)               = 0
[pid 21302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21302] write(3, "1000", 4)         = 4
[pid 21302] close(3)                    = 0
[pid 21302] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21302] write(1, "executing program\n", 18) = 18
[pid 21302] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21302] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21302] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21302] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21302] exit_group(0)               = ?
[pid 21302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20452", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20452", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20452/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20452/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20452/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20452")                        = 0
mkdir("./20453", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21303
./strace-static-x86_64: Process 21303 attached
[pid 21303] set_robust_list(0x5555589fe660, 24) = 0
[pid 21303] chdir("./20453")            = 0
[pid 21303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21303] setpgid(0, 0)               = 0
[pid 21303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21303] write(3, "1000", 4)         = 4
[pid 21303] close(3)                    = 0
[pid 21303] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21303] write(1, "executing program\n", 18executing program
) = 18
[pid 21303] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21303] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21303] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21303] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21303] exit_group(0)               = ?
[pid 21303] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21303, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20453", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20453", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20453/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20453/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20453/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20453")                        = 0
mkdir("./20454", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21304 attached
 <unfinished ...>
[pid 21304] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21304
[pid 21304] chdir("./20454")            = 0
[pid 21304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21304] setpgid(0, 0)               = 0
[pid 21304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21304] write(3, "1000", 4)         = 4
[pid 21304] close(3)                    = 0
[pid 21304] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21304] write(1, "executing program\n", 18) = 18
[pid 21304] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21304] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21304] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21304] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21304] exit_group(0)               = ?
[pid 21304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20454", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20454", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20454/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20454/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20454/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20454")                        = 0
mkdir("./20455", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21305
./strace-static-x86_64: Process 21305 attached
[pid 21305] set_robust_list(0x5555589fe660, 24) = 0
[pid 21305] chdir("./20455")            = 0
[pid 21305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21305] setpgid(0, 0)               = 0
[pid 21305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21305] write(3, "1000", 4)         = 4
[pid 21305] close(3)                    = 0
[pid 21305] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21305] write(1, "executing program\n", 18executing program
) = 18
[pid 21305] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21305] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21305] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21305] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21305] exit_group(0)               = ?
[pid 21305] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21305, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20455", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20455", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20455/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20455/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20455/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20455")                        = 0
mkdir("./20456", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21306
./strace-static-x86_64: Process 21306 attached
[pid 21306] set_robust_list(0x5555589fe660, 24) = 0
[pid 21306] chdir("./20456")            = 0
[pid 21306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21306] setpgid(0, 0)               = 0
[pid 21306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21306] write(3, "1000", 4)         = 4
[pid 21306] close(3)                    = 0
[pid 21306] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21306] write(1, "executing program\n", 18executing program
) = 18
[pid 21306] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21306] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21306] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21306] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21306] exit_group(0)               = ?
[pid 21306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20456", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20456", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20456/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20456/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20456/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20456")                        = 0
mkdir("./20457", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21307
./strace-static-x86_64: Process 21307 attached
[pid 21307] set_robust_list(0x5555589fe660, 24) = 0
[pid 21307] chdir("./20457")            = 0
[pid 21307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21307] setpgid(0, 0)               = 0
[pid 21307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21307] write(3, "1000", 4)         = 4
[pid 21307] close(3)                    = 0
[pid 21307] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21307] write(1, "executing program\n", 18executing program
) = 18
[pid 21307] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21307] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21307] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21307] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21307] exit_group(0)               = ?
[pid 21307] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21307, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20457", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20457", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20457/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20457/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20457/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20457")                        = 0
mkdir("./20458", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21308
./strace-static-x86_64: Process 21308 attached
[pid 21308] set_robust_list(0x5555589fe660, 24) = 0
[pid 21308] chdir("./20458")            = 0
[pid 21308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21308] setpgid(0, 0)               = 0
[pid 21308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21308] write(3, "1000", 4)         = 4
[pid 21308] close(3)                    = 0
[pid 21308] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21308] write(1, "executing program\n", 18executing program
) = 18
[pid 21308] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21308] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21308] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21308] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21308] exit_group(0)               = ?
[pid 21308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20458", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20458", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20458/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20458/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20458/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20458")                        = 0
mkdir("./20459", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21309
./strace-static-x86_64: Process 21309 attached
[pid 21309] set_robust_list(0x5555589fe660, 24) = 0
[pid 21309] chdir("./20459")            = 0
[pid 21309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21309] setpgid(0, 0)               = 0
[pid 21309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21309] write(3, "1000", 4)         = 4
[pid 21309] close(3)                    = 0
[pid 21309] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21309] write(1, "executing program\n", 18executing program
) = 18
[pid 21309] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21309] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21309] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21309] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21309] exit_group(0)               = ?
[pid 21309] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21309, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20459", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20459", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20459/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20459/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20459/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20459")                        = 0
mkdir("./20460", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21310
./strace-static-x86_64: Process 21310 attached
[pid 21310] set_robust_list(0x5555589fe660, 24) = 0
[pid 21310] chdir("./20460")            = 0
[pid 21310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21310] setpgid(0, 0)               = 0
[pid 21310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21310] write(3, "1000", 4)         = 4
[pid 21310] close(3)                    = 0
[pid 21310] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21310] write(1, "executing program\n", 18executing program
) = 18
[pid 21310] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21310] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21310] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21310] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21310] exit_group(0)               = ?
[pid 21310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20460", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20460", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20460/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20460/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20460/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20460")                        = 0
mkdir("./20461", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21311
./strace-static-x86_64: Process 21311 attached
[pid 21311] set_robust_list(0x5555589fe660, 24) = 0
[pid 21311] chdir("./20461")            = 0
[pid 21311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21311] setpgid(0, 0)               = 0
[pid 21311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21311] write(3, "1000", 4)         = 4
[pid 21311] close(3)                    = 0
[pid 21311] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21311] write(1, "executing program\n", 18executing program
) = 18
[pid 21311] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21311] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21311] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21311] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21311] exit_group(0)               = ?
[pid 21311] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21311, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20461", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20461", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20461/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20461/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20461/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20461")                        = 0
mkdir("./20462", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21312 attached
 <unfinished ...>
[pid 21312] set_robust_list(0x5555589fe660, 24) = 0
[pid 21312] chdir("./20462" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21312
[pid 21312] <... chdir resumed>)        = 0
[pid 21312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21312] setpgid(0, 0)               = 0
[pid 21312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21312] write(3, "1000", 4)         = 4
[pid 21312] close(3)                    = 0
[pid 21312] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21312] write(1, "executing program\n", 18) = 18
[pid 21312] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21312] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21312] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21312] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21312] exit_group(0)               = ?
[pid 21312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20462", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20462", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20462/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20462/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20462/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20462")                        = 0
mkdir("./20463", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21313 attached
 <unfinished ...>
[pid 21313] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21313
[pid 21313] chdir("./20463")            = 0
[pid 21313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21313] setpgid(0, 0)               = 0
[pid 21313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21313] write(3, "1000", 4)         = 4
[pid 21313] close(3)                    = 0
[pid 21313] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21313] write(1, "executing program\n", 18executing program
) = 18
[pid 21313] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21313] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21313] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21313] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21313] exit_group(0)               = ?
[pid 21313] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21313, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20463", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20463", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20463/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20463/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20463/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20463")                        = 0
mkdir("./20464", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21314
./strace-static-x86_64: Process 21314 attached
[pid 21314] set_robust_list(0x5555589fe660, 24) = 0
[pid 21314] chdir("./20464")            = 0
[pid 21314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21314] setpgid(0, 0)               = 0
[pid 21314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21314] write(3, "1000", 4)         = 4
[pid 21314] close(3)                    = 0
[pid 21314] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21314] write(1, "executing program\n", 18executing program
) = 18
[pid 21314] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21314] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21314] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21314] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21314] exit_group(0)               = ?
[pid 21314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20464", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20464", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20464/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20464/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20464/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20464")                        = 0
mkdir("./20465", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21315
./strace-static-x86_64: Process 21315 attached
[pid 21315] set_robust_list(0x5555589fe660, 24) = 0
[pid 21315] chdir("./20465")            = 0
[pid 21315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21315] setpgid(0, 0)               = 0
[pid 21315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21315] write(3, "1000", 4)         = 4
[pid 21315] close(3)                    = 0
[pid 21315] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21315] write(1, "executing program\n", 18executing program
) = 18
[pid 21315] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21315] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21315] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21315] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21315] exit_group(0)               = ?
[pid 21315] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21315, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20465", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20465", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20465/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20465/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20465/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20465")                        = 0
mkdir("./20466", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21316
./strace-static-x86_64: Process 21316 attached
[pid 21316] set_robust_list(0x5555589fe660, 24) = 0
[pid 21316] chdir("./20466")            = 0
[pid 21316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21316] setpgid(0, 0)               = 0
[pid 21316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21316] write(3, "1000", 4)         = 4
[pid 21316] close(3)                    = 0
[pid 21316] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21316] write(1, "executing program\n", 18executing program
) = 18
[pid 21316] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21316] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21316] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21316] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21316] exit_group(0)               = ?
[pid 21316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21316, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20466", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20466", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20466/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20466/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20466/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20466")                        = 0
mkdir("./20467", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21317 attached
, child_tidptr=0x5555589fe650) = 21317
[pid 21317] set_robust_list(0x5555589fe660, 24) = 0
[pid 21317] chdir("./20467")            = 0
[pid 21317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21317] setpgid(0, 0)               = 0
[pid 21317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21317] write(3, "1000", 4)         = 4
[pid 21317] close(3)                    = 0
[pid 21317] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21317] write(1, "executing program\n", 18executing program
) = 18
[pid 21317] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21317] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21317] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21317] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21317] exit_group(0)               = ?
[pid 21317] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21317, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20467", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20467", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20467/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20467/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20467/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20467")                        = 0
mkdir("./20468", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21318 attached
 <unfinished ...>
[pid 21318] set_robust_list(0x5555589fe660, 24) = 0
[pid 21318] chdir("./20468")            = 0
[pid 21318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21318] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21318
[pid 21318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21318] write(3, "1000", 4)         = 4
[pid 21318] close(3)                    = 0
[pid 21318] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21318] write(1, "executing program\n", 18executing program
) = 18
[pid 21318] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21318] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21318] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21318] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21318] exit_group(0)               = ?
[pid 21318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20468", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20468", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20468/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20468/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20468/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20468")                        = 0
mkdir("./20469", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21319
./strace-static-x86_64: Process 21319 attached
[pid 21319] set_robust_list(0x5555589fe660, 24) = 0
[pid 21319] chdir("./20469")            = 0
[pid 21319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21319] setpgid(0, 0)               = 0
[pid 21319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21319] write(3, "1000", 4)         = 4
[pid 21319] close(3)                    = 0
[pid 21319] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21319] write(1, "executing program\n", 18) = 18
[pid 21319] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21319] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21319] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21319] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21319] exit_group(0)               = ?
[pid 21319] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21319, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20469", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20469", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20469/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20469/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20469/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20469")                        = 0
mkdir("./20470", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21320
./strace-static-x86_64: Process 21320 attached
[pid 21320] set_robust_list(0x5555589fe660, 24) = 0
[pid 21320] chdir("./20470")            = 0
[pid 21320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21320] setpgid(0, 0)               = 0
[pid 21320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21320] write(3, "1000", 4)         = 4
[pid 21320] close(3)                    = 0
[pid 21320] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21320] write(1, "executing program\n", 18executing program
) = 18
[pid 21320] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21320] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21320] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21320] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21320] exit_group(0)               = ?
[pid 21320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20470", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20470", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20470/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20470/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20470/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20470")                        = 0
mkdir("./20471", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21321
./strace-static-x86_64: Process 21321 attached
[pid 21321] set_robust_list(0x5555589fe660, 24) = 0
[pid 21321] chdir("./20471")            = 0
[pid 21321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21321] setpgid(0, 0)               = 0
[pid 21321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21321] write(3, "1000", 4)         = 4
[pid 21321] close(3)                    = 0
[pid 21321] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21321] write(1, "executing program\n", 18executing program
) = 18
[pid 21321] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21321] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21321] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21321] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21321] exit_group(0)               = ?
[pid 21321] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21321, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20471", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20471", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20471/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20471/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20471/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20471")                        = 0
mkdir("./20472", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21322
./strace-static-x86_64: Process 21322 attached
[pid 21322] set_robust_list(0x5555589fe660, 24) = 0
[pid 21322] chdir("./20472")            = 0
[pid 21322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21322] setpgid(0, 0)               = 0
[pid 21322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21322] write(3, "1000", 4)         = 4
[pid 21322] close(3)                    = 0
[pid 21322] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21322] write(1, "executing program\n", 18executing program
) = 18
[pid 21322] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21322] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21322] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21322] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21322] exit_group(0)               = ?
[pid 21322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21322, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20472", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20472", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20472/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20472/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20472/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20472")                        = 0
mkdir("./20473", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21323
./strace-static-x86_64: Process 21323 attached
[pid 21323] set_robust_list(0x5555589fe660, 24) = 0
[pid 21323] chdir("./20473")            = 0
[pid 21323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21323] setpgid(0, 0)               = 0
[pid 21323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21323] write(3, "1000", 4)         = 4
[pid 21323] close(3)                    = 0
[pid 21323] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21323] write(1, "executing program\n", 18) = 18
[pid 21323] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21323] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21323] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21323] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21323] exit_group(0)               = ?
[pid 21323] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21323, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20473", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20473", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20473/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20473/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20473/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20473")                        = 0
mkdir("./20474", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21324
./strace-static-x86_64: Process 21324 attached
[pid 21324] set_robust_list(0x5555589fe660, 24) = 0
[pid 21324] chdir("./20474")            = 0
[pid 21324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21324] setpgid(0, 0)               = 0
[pid 21324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21324] write(3, "1000", 4)         = 4
[pid 21324] close(3)                    = 0
[pid 21324] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21324] write(1, "executing program\n", 18executing program
) = 18
[pid 21324] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21324] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21324] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21324] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21324] exit_group(0)               = ?
[pid 21324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21324, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20474", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20474", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20474/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20474/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20474/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20474")                        = 0
mkdir("./20475", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21325 attached
 <unfinished ...>
[pid 21325] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21325
[pid 21325] chdir("./20475")            = 0
[pid 21325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21325] setpgid(0, 0)               = 0
[pid 21325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21325] write(3, "1000", 4)         = 4
[pid 21325] close(3)                    = 0
[pid 21325] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21325] write(1, "executing program\n", 18executing program
) = 18
[pid 21325] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21325] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21325] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21325] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21325] exit_group(0)               = ?
[pid 21325] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21325, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20475", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20475", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20475/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20475/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20475/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20475")                        = 0
mkdir("./20476", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21326 attached
 <unfinished ...>
[pid 21326] set_robust_list(0x5555589fe660, 24) = 0
[pid 21326] chdir("./20476")            = 0
[pid 21326] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21326
[pid 21326] <... prctl resumed>)        = 0
[pid 21326] setpgid(0, 0)               = 0
[pid 21326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21326] write(3, "1000", 4)         = 4
[pid 21326] close(3)                    = 0
[pid 21326] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21326] write(1, "executing program\n", 18executing program
) = 18
[pid 21326] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21326] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21326] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21326] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21326] exit_group(0)               = ?
[pid 21326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20476", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20476", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20476/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20476/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20476/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20476")                        = 0
mkdir("./20477", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21327
./strace-static-x86_64: Process 21327 attached
[pid 21327] set_robust_list(0x5555589fe660, 24) = 0
[pid 21327] chdir("./20477")            = 0
[pid 21327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21327] setpgid(0, 0)               = 0
[pid 21327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21327] write(3, "1000", 4)         = 4
[pid 21327] close(3)                    = 0
[pid 21327] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21327] write(1, "executing program\n", 18executing program
) = 18
[pid 21327] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21327] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21327] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21327] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21327] exit_group(0)               = ?
[pid 21327] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21327, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20477", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20477", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20477/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20477/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20477/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20477")                        = 0
mkdir("./20478", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21328
./strace-static-x86_64: Process 21328 attached
[pid 21328] set_robust_list(0x5555589fe660, 24) = 0
[pid 21328] chdir("./20478")            = 0
[pid 21328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21328] setpgid(0, 0)               = 0
[pid 21328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21328] write(3, "1000", 4)         = 4
[pid 21328] close(3)                    = 0
[pid 21328] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21328] write(1, "executing program\n", 18executing program
) = 18
[pid 21328] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21328] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21328] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21328] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21328] exit_group(0)               = ?
[pid 21328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20478", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20478", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20478/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20478/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20478/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20478")                        = 0
mkdir("./20479", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21329
./strace-static-x86_64: Process 21329 attached
[pid 21329] set_robust_list(0x5555589fe660, 24) = 0
[pid 21329] chdir("./20479")            = 0
[pid 21329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21329] setpgid(0, 0)               = 0
[pid 21329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21329] write(3, "1000", 4)         = 4
[pid 21329] close(3)                    = 0
[pid 21329] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21329] write(1, "executing program\n", 18) = 18
[pid 21329] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21329] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21329] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21329] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21329] exit_group(0)               = ?
[pid 21329] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21329, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20479", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20479", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20479/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20479/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20479/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20479")                        = 0
mkdir("./20480", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21330
./strace-static-x86_64: Process 21330 attached
[pid 21330] set_robust_list(0x5555589fe660, 24) = 0
[pid 21330] chdir("./20480")            = 0
[pid 21330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21330] setpgid(0, 0)               = 0
[pid 21330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21330] write(3, "1000", 4)         = 4
[pid 21330] close(3)                    = 0
[pid 21330] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21330] write(1, "executing program\n", 18executing program
) = 18
[pid 21330] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21330] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21330] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21330] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21330] exit_group(0)               = ?
[pid 21330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20480", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20480", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20480/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20480/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20480/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20480")                        = 0
mkdir("./20481", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21331 attached
 <unfinished ...>
[pid 21331] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21331
[pid 21331] chdir("./20481")            = 0
[pid 21331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21331] setpgid(0, 0)               = 0
[pid 21331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21331] write(3, "1000", 4)         = 4
[pid 21331] close(3)                    = 0
[pid 21331] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21331] write(1, "executing program\n", 18executing program
) = 18
[pid 21331] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21331] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21331] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21331] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21331] exit_group(0)               = ?
[pid 21331] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21331, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20481", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20481", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20481/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20481/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20481/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20481")                        = 0
mkdir("./20482", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21332 attached
 <unfinished ...>
[pid 21332] set_robust_list(0x5555589fe660, 24) = 0
[pid 21332] chdir("./20482")            = 0
[pid 21332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21332] setpgid(0, 0)               = 0
[pid 21332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21332] write(3, "1000", 4)         = 4
[pid 21332] close(3)                    = 0
[pid 21332] symlink("/dev/binderfs", "./binderfs" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21332
[pid 21332] <... symlink resumed>)      = 0
[pid 21332] write(1, "executing program\n", 18executing program
) = 18
[pid 21332] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21332] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21332] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21332] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21332] exit_group(0)               = ?
[pid 21332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20482", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20482", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20482/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20482/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20482/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20482")                        = 0
mkdir("./20483", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21333 attached
 <unfinished ...>
[pid 21333] set_robust_list(0x5555589fe660, 24) = 0
[pid 21333] chdir("./20483")            = 0
[pid 21333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21333] setpgid(0, 0 <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21333
[pid 21333] <... setpgid resumed>)      = 0
[pid 21333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21333] write(3, "1000", 4)         = 4
[pid 21333] close(3)                    = 0
[pid 21333] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21333] write(1, "executing program\n", 18) = 18
[pid 21333] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21333] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21333] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21333] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21333] exit_group(0)               = ?
[pid 21333] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21333, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20483", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20483", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20483/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20483/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20483/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20483")                        = 0
mkdir("./20484", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21334
./strace-static-x86_64: Process 21334 attached
[pid 21334] set_robust_list(0x5555589fe660, 24) = 0
[pid 21334] chdir("./20484")            = 0
[pid 21334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21334] setpgid(0, 0)               = 0
[pid 21334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21334] write(3, "1000", 4)         = 4
[pid 21334] close(3)                    = 0
[pid 21334] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21334] write(1, "executing program\n", 18executing program
) = 18
[pid 21334] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21334] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21334] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21334] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21334] exit_group(0)               = ?
[pid 21334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20484", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20484", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20484/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20484/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20484/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20484")                        = 0
mkdir("./20485", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21335
./strace-static-x86_64: Process 21335 attached
[pid 21335] set_robust_list(0x5555589fe660, 24) = 0
[pid 21335] chdir("./20485")            = 0
[pid 21335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21335] setpgid(0, 0)               = 0
[pid 21335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21335] write(3, "1000", 4)         = 4
[pid 21335] close(3)                    = 0
[pid 21335] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21335] write(1, "executing program\n", 18executing program
) = 18
[pid 21335] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21335] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21335] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21335] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21335] exit_group(0)               = ?
[pid 21335] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21335, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20485", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20485", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20485/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20485/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20485/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20485")                        = 0
mkdir("./20486", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21336
./strace-static-x86_64: Process 21336 attached
[pid 21336] set_robust_list(0x5555589fe660, 24) = 0
[pid 21336] chdir("./20486")            = 0
[pid 21336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21336] setpgid(0, 0)               = 0
[pid 21336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21336] write(3, "1000", 4)         = 4
[pid 21336] close(3)                    = 0
[pid 21336] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21336] write(1, "executing program\n", 18) = 18
[pid 21336] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21336] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21336] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21336] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21336] exit_group(0)               = ?
[pid 21336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20486", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20486", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20486/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20486/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20486/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20486")                        = 0
mkdir("./20487", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21337
./strace-static-x86_64: Process 21337 attached
[pid 21337] set_robust_list(0x5555589fe660, 24) = 0
[pid 21337] chdir("./20487")            = 0
[pid 21337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21337] setpgid(0, 0)               = 0
[pid 21337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21337] write(3, "1000", 4)         = 4
[pid 21337] close(3)                    = 0
[pid 21337] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21337] write(1, "executing program\n", 18executing program
) = 18
[pid 21337] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21337] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21337] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21337] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21337] exit_group(0)               = ?
[pid 21337] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21337, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20487", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20487", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20487/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20487/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20487/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20487")                        = 0
mkdir("./20488", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21339
./strace-static-x86_64: Process 21339 attached
[pid 21339] set_robust_list(0x5555589fe660, 24) = 0
[pid 21339] chdir("./20488")            = 0
[pid 21339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21339] setpgid(0, 0)               = 0
[pid 21339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21339] write(3, "1000", 4)         = 4
[pid 21339] close(3)                    = 0
[pid 21339] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21339] write(1, "executing program\n", 18executing program
) = 18
[pid 21339] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21339] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21339] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21339] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21339] exit_group(0)               = ?
[pid 21339] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21339, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20488", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20488", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20488/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20488/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20488/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20488")                        = 0
mkdir("./20489", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21340 attached
 <unfinished ...>
[pid 21340] set_robust_list(0x5555589fe660, 24) = 0
[pid 21340] chdir("./20489")            = 0
[pid 21340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21340] setpgid(0, 0)               = 0
[pid 21340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21340
[pid 21340] write(3, "1000", 4)         = 4
[pid 21340] close(3)                    = 0
[pid 21340] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21340] write(1, "executing program\n", 18) = 18
[pid 21340] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21340] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21340] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21340] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21340] exit_group(0)               = ?
[pid 21340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21340, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20489", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20489", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20489/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20489/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20489/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20489")                        = 0
mkdir("./20490", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21341
./strace-static-x86_64: Process 21341 attached
[pid 21341] set_robust_list(0x5555589fe660, 24) = 0
[pid 21341] chdir("./20490")            = 0
[pid 21341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21341] setpgid(0, 0)               = 0
[pid 21341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21341] write(3, "1000", 4)         = 4
[pid 21341] close(3)                    = 0
[pid 21341] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21341] write(1, "executing program\n", 18executing program
) = 18
[pid 21341] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21341] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21341] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21341] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21341] exit_group(0)               = ?
[pid 21341] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21341, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20490", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20490", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20490/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20490/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20490/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20490")                        = 0
mkdir("./20491", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21342
./strace-static-x86_64: Process 21342 attached
[pid 21342] set_robust_list(0x5555589fe660, 24) = 0
[pid 21342] chdir("./20491")            = 0
[pid 21342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21342] setpgid(0, 0)               = 0
[pid 21342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21342] write(3, "1000", 4)         = 4
[pid 21342] close(3)                    = 0
[pid 21342] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21342] write(1, "executing program\n", 18executing program
) = 18
[pid 21342] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21342] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21342] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21342] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21342] exit_group(0)               = ?
[pid 21342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21342, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20491", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20491", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20491/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20491/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20491/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20491")                        = 0
mkdir("./20492", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21343 attached
 <unfinished ...>
[pid 21343] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21343
[pid 21343] chdir("./20492")            = 0
[pid 21343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21343] setpgid(0, 0)               = 0
[pid 21343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21343] write(3, "1000", 4)         = 4
[pid 21343] close(3)                    = 0
[pid 21343] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21343] write(1, "executing program\n", 18executing program
) = 18
[pid 21343] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21343] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21343] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21343] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21343] exit_group(0)               = ?
[pid 21343] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21343, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20492", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20492", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20492/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20492/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20492/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20492")                        = 0
mkdir("./20493", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21344
./strace-static-x86_64: Process 21344 attached
[pid 21344] set_robust_list(0x5555589fe660, 24) = 0
[pid 21344] chdir("./20493")            = 0
[pid 21344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21344] setpgid(0, 0)               = 0
[pid 21344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21344] write(3, "1000", 4)         = 4
[pid 21344] close(3)                    = 0
[pid 21344] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21344] write(1, "executing program\n", 18) = 18
[pid 21344] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21344] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21344] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21344] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21344] exit_group(0)               = ?
[pid 21344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20493", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20493", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20493/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20493/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20493/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20493")                        = 0
mkdir("./20494", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21345
./strace-static-x86_64: Process 21345 attached
[pid 21345] set_robust_list(0x5555589fe660, 24) = 0
[pid 21345] chdir("./20494")            = 0
[pid 21345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21345] setpgid(0, 0)               = 0
[pid 21345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21345] write(3, "1000", 4)         = 4
[pid 21345] close(3)                    = 0
[pid 21345] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21345] write(1, "executing program\n", 18executing program
) = 18
[pid 21345] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21345] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21345] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21345] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21345] exit_group(0)               = ?
[pid 21345] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21345, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20494", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20494", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20494/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20494/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20494/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20494")                        = 0
mkdir("./20495", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21346
./strace-static-x86_64: Process 21346 attached
[pid 21346] set_robust_list(0x5555589fe660, 24) = 0
[pid 21346] chdir("./20495")            = 0
[pid 21346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21346] setpgid(0, 0)               = 0
[pid 21346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21346] write(3, "1000", 4)         = 4
[pid 21346] close(3)                    = 0
[pid 21346] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21346] write(1, "executing program\n", 18executing program
) = 18
[pid 21346] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21346] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21346] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21346] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21346] exit_group(0)               = ?
[pid 21346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20495", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20495", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20495/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20495/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20495/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20495")                        = 0
mkdir("./20496", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21347
./strace-static-x86_64: Process 21347 attached
[pid 21347] set_robust_list(0x5555589fe660, 24) = 0
[pid 21347] chdir("./20496")            = 0
[pid 21347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21347] setpgid(0, 0)               = 0
[pid 21347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21347] write(3, "1000", 4)         = 4
[pid 21347] close(3)                    = 0
[pid 21347] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21347] write(1, "executing program\n", 18executing program
) = 18
[pid 21347] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21347] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21347] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21347] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21347] exit_group(0)               = ?
[pid 21347] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21347, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20496", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20496", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20496/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20496/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20496/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20496")                        = 0
mkdir("./20497", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21348
./strace-static-x86_64: Process 21348 attached
[pid 21348] set_robust_list(0x5555589fe660, 24) = 0
[pid 21348] chdir("./20497")            = 0
[pid 21348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21348] setpgid(0, 0)               = 0
[pid 21348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21348] write(3, "1000", 4)         = 4
[pid 21348] close(3)                    = 0
[pid 21348] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21348] write(1, "executing program\n", 18executing program
) = 18
[pid 21348] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21348] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21348] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21348] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21348] exit_group(0)               = ?
[pid 21348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20497", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20497", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20497/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20497/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20497/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20497")                        = 0
mkdir("./20498", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21349
./strace-static-x86_64: Process 21349 attached
[pid 21349] set_robust_list(0x5555589fe660, 24) = 0
[pid 21349] chdir("./20498")            = 0
[pid 21349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21349] setpgid(0, 0)               = 0
[pid 21349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21349] write(3, "1000", 4)         = 4
[pid 21349] close(3)                    = 0
[pid 21349] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21349] write(1, "executing program\n", 18executing program
) = 18
[pid 21349] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21349] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21349] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21349] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21349] exit_group(0)               = ?
[pid 21349] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21349, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20498", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20498", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20498/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20498/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20498/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20498")                        = 0
mkdir("./20499", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21350
./strace-static-x86_64: Process 21350 attached
[pid 21350] set_robust_list(0x5555589fe660, 24) = 0
[pid 21350] chdir("./20499")            = 0
[pid 21350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21350] setpgid(0, 0)               = 0
[pid 21350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21350] write(3, "1000", 4)         = 4
[pid 21350] close(3)                    = 0
[pid 21350] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21350] write(1, "executing program\n", 18executing program
) = 18
[pid 21350] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21350] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21350] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21350] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21350] exit_group(0)               = ?
[pid 21350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20499", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20499", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20499/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20499/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20499/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20499")                        = 0
mkdir("./20500", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21351
./strace-static-x86_64: Process 21351 attached
[pid 21351] set_robust_list(0x5555589fe660, 24) = 0
[pid 21351] chdir("./20500")            = 0
[pid 21351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21351] setpgid(0, 0)               = 0
[pid 21351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21351] write(3, "1000", 4)         = 4
[pid 21351] close(3)                    = 0
[pid 21351] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21351] write(1, "executing program\n", 18executing program
) = 18
[pid 21351] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21351] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21351] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21351] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21351] exit_group(0)               = ?
[pid 21351] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21351, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20500", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20500", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20500/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20500/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20500/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20500")                        = 0
mkdir("./20501", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21352
./strace-static-x86_64: Process 21352 attached
[pid 21352] set_robust_list(0x5555589fe660, 24) = 0
[pid 21352] chdir("./20501")            = 0
[pid 21352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21352] setpgid(0, 0)               = 0
[pid 21352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21352] write(3, "1000", 4)         = 4
[pid 21352] close(3)                    = 0
[pid 21352] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21352] write(1, "executing program\n", 18) = 18
[pid 21352] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21352] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21352] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21352] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21352] exit_group(0)               = ?
[pid 21352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21352, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20501", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20501", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20501/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20501/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20501/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20501")                        = 0
mkdir("./20502", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21353
./strace-static-x86_64: Process 21353 attached
[pid 21353] set_robust_list(0x5555589fe660, 24) = 0
[pid 21353] chdir("./20502")            = 0
[pid 21353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21353] setpgid(0, 0)               = 0
[pid 21353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21353] write(3, "1000", 4)         = 4
[pid 21353] close(3)                    = 0
[pid 21353] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21353] write(1, "executing program\n", 18executing program
) = 18
[pid 21353] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21353] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21353] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21353] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21353] exit_group(0)               = ?
[pid 21353] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21353, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20502", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20502", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20502/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20502/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20502/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20502")                        = 0
mkdir("./20503", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21354
./strace-static-x86_64: Process 21354 attached
[pid 21354] set_robust_list(0x5555589fe660, 24) = 0
[pid 21354] chdir("./20503")            = 0
[pid 21354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21354] setpgid(0, 0)               = 0
[pid 21354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21354] write(3, "1000", 4)         = 4
[pid 21354] close(3)                    = 0
[pid 21354] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21354] write(1, "executing program\n", 18executing program
) = 18
[pid 21354] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21354] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21354] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21354] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21354] exit_group(0)               = ?
[pid 21354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21354, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20503", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20503", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20503/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20503/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20503/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20503")                        = 0
mkdir("./20504", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21355
./strace-static-x86_64: Process 21355 attached
[pid 21355] set_robust_list(0x5555589fe660, 24) = 0
[pid 21355] chdir("./20504")            = 0
[pid 21355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21355] setpgid(0, 0)               = 0
[pid 21355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21355] write(3, "1000", 4)         = 4
[pid 21355] close(3)                    = 0
[pid 21355] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21355] write(1, "executing program\n", 18) = 18
[pid 21355] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21355] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21355] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21355] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21355] exit_group(0)               = ?
[pid 21355] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21355, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20504", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20504", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20504/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20504/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20504/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20504")                        = 0
mkdir("./20505", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21356
./strace-static-x86_64: Process 21356 attached
[pid 21356] set_robust_list(0x5555589fe660, 24) = 0
[pid 21356] chdir("./20505")            = 0
[pid 21356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21356] setpgid(0, 0)               = 0
[pid 21356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21356] write(3, "1000", 4)         = 4
[pid 21356] close(3)                    = 0
[pid 21356] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21356] write(1, "executing program\n", 18executing program
) = 18
[pid 21356] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21356] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21356] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21356] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21356] exit_group(0)               = ?
[pid 21356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21356, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20505", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20505", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20505/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20505/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20505/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20505")                        = 0
mkdir("./20506", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21357
./strace-static-x86_64: Process 21357 attached
[pid 21357] set_robust_list(0x5555589fe660, 24) = 0
[pid 21357] chdir("./20506")            = 0
[pid 21357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21357] setpgid(0, 0)               = 0
[pid 21357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21357] write(3, "1000", 4)         = 4
[pid 21357] close(3)                    = 0
[pid 21357] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21357] write(1, "executing program\n", 18executing program
) = 18
[pid 21357] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21357] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21357] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21357] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21357] exit_group(0)               = ?
[pid 21357] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21357, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20506", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20506", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20506/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20506/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20506/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20506")                        = 0
mkdir("./20507", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21358
./strace-static-x86_64: Process 21358 attached
[pid 21358] set_robust_list(0x5555589fe660, 24) = 0
[pid 21358] chdir("./20507")            = 0
[pid 21358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21358] setpgid(0, 0)               = 0
[pid 21358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21358] write(3, "1000", 4)         = 4
[pid 21358] close(3)                    = 0
[pid 21358] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21358] write(1, "executing program\n", 18executing program
) = 18
[pid 21358] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21358] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21358] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21358] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21358] exit_group(0)               = ?
[pid 21358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21358, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20507", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20507", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20507/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20507/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20507/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20507")                        = 0
mkdir("./20508", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21359 attached
, child_tidptr=0x5555589fe650) = 21359
[pid 21359] set_robust_list(0x5555589fe660, 24) = 0
[pid 21359] chdir("./20508")            = 0
[pid 21359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21359] setpgid(0, 0)               = 0
[pid 21359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21359] write(3, "1000", 4)         = 4
[pid 21359] close(3)                    = 0
[pid 21359] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21359] write(1, "executing program\n", 18) = 18
[pid 21359] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21359] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21359] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21359] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21359] exit_group(0)               = ?
[pid 21359] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21359, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20508", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20508", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20508/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20508/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20508/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20508")                        = 0
mkdir("./20509", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21360
./strace-static-x86_64: Process 21360 attached
[pid 21360] set_robust_list(0x5555589fe660, 24) = 0
[pid 21360] chdir("./20509")            = 0
[pid 21360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21360] setpgid(0, 0)               = 0
[pid 21360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21360] write(3, "1000", 4)         = 4
[pid 21360] close(3)                    = 0
[pid 21360] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21360] write(1, "executing program\n", 18) = 18
[pid 21360] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21360] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21360] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21360] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21360] exit_group(0)               = ?
[pid 21360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21360, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20509", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20509", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20509/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20509/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20509/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20509")                        = 0
mkdir("./20510", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21361 attached
 <unfinished ...>
[pid 21361] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21361
[pid 21361] chdir("./20510")            = 0
[pid 21361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21361] setpgid(0, 0)               = 0
[pid 21361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21361] write(3, "1000", 4)         = 4
[pid 21361] close(3)                    = 0
[pid 21361] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21361] write(1, "executing program\n", 18executing program
) = 18
[pid 21361] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21361] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21361] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21361] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21361] exit_group(0)               = ?
[pid 21361] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21361, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20510", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20510", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20510/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20510/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20510/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20510")                        = 0
mkdir("./20511", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21362
./strace-static-x86_64: Process 21362 attached
[pid 21362] set_robust_list(0x5555589fe660, 24) = 0
[pid 21362] chdir("./20511")            = 0
[pid 21362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21362] setpgid(0, 0)               = 0
[pid 21362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21362] write(3, "1000", 4)         = 4
[pid 21362] close(3)                    = 0
[pid 21362] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21362] write(1, "executing program\n", 18) = 18
[pid 21362] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21362] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21362] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21362] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21362] exit_group(0)               = ?
[pid 21362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21362, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20511", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20511", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20511/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20511/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20511/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20511")                        = 0
mkdir("./20512", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21363
./strace-static-x86_64: Process 21363 attached
[pid 21363] set_robust_list(0x5555589fe660, 24) = 0
[pid 21363] chdir("./20512")            = 0
[pid 21363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21363] setpgid(0, 0)               = 0
[pid 21363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 21363] write(3, "1000", 4)         = 4
[pid 21363] close(3)                    = 0
[pid 21363] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21363] write(1, "executing program\n", 18) = 18
[pid 21363] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21363] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21363] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21363] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21363] exit_group(0)               = ?
[pid 21363] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21363, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20512", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20512", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20512/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20512/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20512/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20512")                        = 0
mkdir("./20513", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21364
./strace-static-x86_64: Process 21364 attached
[pid 21364] set_robust_list(0x5555589fe660, 24) = 0
[pid 21364] chdir("./20513")            = 0
[pid 21364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21364] setpgid(0, 0)               = 0
[pid 21364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21364] write(3, "1000", 4)         = 4
[pid 21364] close(3)                    = 0
[pid 21364] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21364] write(1, "executing program\n", 18executing program
) = 18
[pid 21364] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21364] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21364] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21364] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21364] exit_group(0)               = ?
[pid 21364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21364, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20513", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20513", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20513/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20513/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20513/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20513")                        = 0
mkdir("./20514", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21365
./strace-static-x86_64: Process 21365 attached
[pid 21365] set_robust_list(0x5555589fe660, 24) = 0
[pid 21365] chdir("./20514")            = 0
[pid 21365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21365] setpgid(0, 0)               = 0
[pid 21365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21365] write(3, "1000", 4)         = 4
[pid 21365] close(3)                    = 0
[pid 21365] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21365] write(1, "executing program\n", 18executing program
) = 18
[pid 21365] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21365] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21365] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21365] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21365] exit_group(0)               = ?
[pid 21365] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21365, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20514", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20514", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20514/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20514/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20514/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20514")                        = 0
mkdir("./20515", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21366
./strace-static-x86_64: Process 21366 attached
[pid 21366] set_robust_list(0x5555589fe660, 24) = 0
[pid 21366] chdir("./20515")            = 0
[pid 21366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21366] setpgid(0, 0)               = 0
[pid 21366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21366] write(3, "1000", 4)         = 4
[pid 21366] close(3)                    = 0
[pid 21366] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21366] write(1, "executing program\n", 18executing program
) = 18
[pid 21366] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21366] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21366] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21366] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21366] exit_group(0)               = ?
[pid 21366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21366, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20515", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20515", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20515/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20515/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20515/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20515")                        = 0
mkdir("./20516", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21367 attached
 <unfinished ...>
[pid 21367] set_robust_list(0x5555589fe660, 24) = 0
[pid 21367] chdir("./20516" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21367
[pid 21367] <... chdir resumed>)        = 0
[pid 21367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21367] setpgid(0, 0)               = 0
[pid 21367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21367] write(3, "1000", 4)         = 4
[pid 21367] close(3)                    = 0
[pid 21367] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21367] write(1, "executing program\n", 18executing program
) = 18
[pid 21367] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21367] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21367] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21367] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21367] exit_group(0)               = ?
[pid 21367] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21367, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20516", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20516", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20516/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20516/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20516/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20516")                        = 0
mkdir("./20517", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21368 attached
 <unfinished ...>
[pid 21368] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21368
[pid 21368] chdir("./20517")            = 0
[pid 21368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21368] setpgid(0, 0)               = 0
[pid 21368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21368] write(3, "1000", 4)         = 4
[pid 21368] close(3)                    = 0
executing program
[pid 21368] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21368] write(1, "executing program\n", 18) = 18
[pid 21368] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21368] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21368] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21368] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21368] exit_group(0)               = ?
[pid 21368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21368, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20517", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20517", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20517/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20517/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20517/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20517")                        = 0
mkdir("./20518", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21369
./strace-static-x86_64: Process 21369 attached
[pid 21369] set_robust_list(0x5555589fe660, 24) = 0
[pid 21369] chdir("./20518")            = 0
[pid 21369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21369] setpgid(0, 0)               = 0
[pid 21369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21369] write(3, "1000", 4)         = 4
[pid 21369] close(3)                    = 0
[pid 21369] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21369] write(1, "executing program\n", 18executing program
) = 18
[pid 21369] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21369] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21369] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21369] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21369] exit_group(0)               = ?
[pid 21369] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21369, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20518", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20518", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20518/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20518/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20518/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20518")                        = 0
mkdir("./20519", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21370
./strace-static-x86_64: Process 21370 attached
[pid 21370] set_robust_list(0x5555589fe660, 24) = 0
[pid 21370] chdir("./20519")            = 0
[pid 21370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21370] setpgid(0, 0)               = 0
[pid 21370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21370] write(3, "1000", 4)         = 4
[pid 21370] close(3)                    = 0
[pid 21370] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21370] write(1, "executing program\n", 18) = 18
[pid 21370] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21370] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21370] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21370] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21370] exit_group(0)               = ?
[pid 21370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21370, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20519", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20519", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20519/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20519/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20519/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20519")                        = 0
mkdir("./20520", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21371
./strace-static-x86_64: Process 21371 attached
[pid 21371] set_robust_list(0x5555589fe660, 24) = 0
[pid 21371] chdir("./20520")            = 0
[pid 21371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21371] setpgid(0, 0)               = 0
[pid 21371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21371] write(3, "1000", 4)         = 4
[pid 21371] close(3)                    = 0
[pid 21371] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21371] write(1, "executing program\n", 18) = 18
[pid 21371] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21371] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21371] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21371] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21371] exit_group(0)               = ?
[pid 21371] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21371, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20520", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20520", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20520/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20520/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20520/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20520")                        = 0
mkdir("./20521", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21372
./strace-static-x86_64: Process 21372 attached
[pid 21372] set_robust_list(0x5555589fe660, 24) = 0
[pid 21372] chdir("./20521")            = 0
[pid 21372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21372] setpgid(0, 0)               = 0
[pid 21372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21372] write(3, "1000", 4)         = 4
[pid 21372] close(3)                    = 0
[pid 21372] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21372] write(1, "executing program\n", 18executing program
) = 18
[pid 21372] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21372] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21372] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21372] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21372] exit_group(0)               = ?
[pid 21372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21372, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20521", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20521", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20521/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20521/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20521/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20521")                        = 0
mkdir("./20522", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21373
./strace-static-x86_64: Process 21373 attached
[pid 21373] set_robust_list(0x5555589fe660, 24) = 0
[pid 21373] chdir("./20522")            = 0
[pid 21373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21373] setpgid(0, 0)               = 0
[pid 21373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21373] write(3, "1000", 4)         = 4
[pid 21373] close(3)                    = 0
[pid 21373] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21373] write(1, "executing program\n", 18) = 18
[pid 21373] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21373] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21373] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21373] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21373] exit_group(0)               = ?
[pid 21373] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21373, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20522", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20522", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20522/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20522/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20522/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20522")                        = 0
mkdir("./20523", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21374
./strace-static-x86_64: Process 21374 attached
[pid 21374] set_robust_list(0x5555589fe660, 24) = 0
[pid 21374] chdir("./20523")            = 0
[pid 21374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21374] setpgid(0, 0)               = 0
[pid 21374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21374] write(3, "1000", 4)         = 4
[pid 21374] close(3)                    = 0
[pid 21374] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21374] write(1, "executing program\n", 18) = 18
[pid 21374] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21374] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21374] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21374] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21374] exit_group(0)               = ?
[pid 21374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21374, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20523", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20523", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20523/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20523/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20523/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20523")                        = 0
mkdir("./20524", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21375
./strace-static-x86_64: Process 21375 attached
[pid 21375] set_robust_list(0x5555589fe660, 24) = 0
[pid 21375] chdir("./20524")            = 0
[pid 21375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21375] setpgid(0, 0)               = 0
[pid 21375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21375] write(3, "1000", 4)         = 4
[pid 21375] close(3)                    = 0
[pid 21375] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21375] write(1, "executing program\n", 18executing program
) = 18
[pid 21375] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21375] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21375] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21375] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21375] exit_group(0)               = ?
[pid 21375] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21375, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20524", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20524", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20524/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20524/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20524/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20524")                        = 0
mkdir("./20525", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21376
./strace-static-x86_64: Process 21376 attached
[pid 21376] set_robust_list(0x5555589fe660, 24) = 0
[pid 21376] chdir("./20525")            = 0
[pid 21376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21376] setpgid(0, 0)               = 0
[pid 21376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21376] write(3, "1000", 4)         = 4
[pid 21376] close(3)                    = 0
[pid 21376] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21376] write(1, "executing program\n", 18executing program
) = 18
[pid 21376] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21376] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21376] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21376] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21376] exit_group(0)               = ?
[pid 21376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21376, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20525", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20525", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20525/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20525/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20525/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20525")                        = 0
mkdir("./20526", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21377
./strace-static-x86_64: Process 21377 attached
[pid 21377] set_robust_list(0x5555589fe660, 24) = 0
[pid 21377] chdir("./20526")            = 0
[pid 21377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21377] setpgid(0, 0)               = 0
[pid 21377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21377] write(3, "1000", 4)         = 4
[pid 21377] close(3)                    = 0
[pid 21377] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21377] write(1, "executing program\n", 18executing program
) = 18
[pid 21377] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21377] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21377] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21377] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21377] exit_group(0)               = ?
[pid 21377] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21377, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20526", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20526", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20526/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20526/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20526/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20526")                        = 0
mkdir("./20527", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21378
./strace-static-x86_64: Process 21378 attached
[pid 21378] set_robust_list(0x5555589fe660, 24) = 0
[pid 21378] chdir("./20527")            = 0
[pid 21378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21378] setpgid(0, 0)               = 0
[pid 21378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21378] write(3, "1000", 4)         = 4
[pid 21378] close(3)                    = 0
[pid 21378] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21378] write(1, "executing program\n", 18executing program
) = 18
[pid 21378] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21378] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21378] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21378] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21378] exit_group(0)               = ?
[pid 21378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20527", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20527", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20527/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20527/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20527/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20527")                        = 0
mkdir("./20528", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21379
./strace-static-x86_64: Process 21379 attached
[pid 21379] set_robust_list(0x5555589fe660, 24) = 0
[pid 21379] chdir("./20528")            = 0
[pid 21379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21379] setpgid(0, 0)               = 0
[pid 21379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21379] write(3, "1000", 4)         = 4
[pid 21379] close(3)                    = 0
[pid 21379] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21379] write(1, "executing program\n", 18executing program
) = 18
[pid 21379] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21379] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21379] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21379] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21379] exit_group(0)               = ?
[pid 21379] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21379, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20528", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20528", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20528/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20528/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20528/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20528")                        = 0
mkdir("./20529", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21380
./strace-static-x86_64: Process 21380 attached
[pid 21380] set_robust_list(0x5555589fe660, 24) = 0
[pid 21380] chdir("./20529")            = 0
[pid 21380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21380] setpgid(0, 0)               = 0
[pid 21380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21380] write(3, "1000", 4)         = 4
[pid 21380] close(3)                    = 0
[pid 21380] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21380] write(1, "executing program\n", 18executing program
) = 18
[pid 21380] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21380] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21380] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21380] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21380] exit_group(0)               = ?
[pid 21380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21380, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20529", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20529", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20529/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20529/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20529/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20529")                        = 0
mkdir("./20530", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21381
./strace-static-x86_64: Process 21381 attached
[pid 21381] set_robust_list(0x5555589fe660, 24) = 0
[pid 21381] chdir("./20530")            = 0
[pid 21381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21381] setpgid(0, 0)               = 0
[pid 21381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21381] write(3, "1000", 4)         = 4
[pid 21381] close(3)                    = 0
[pid 21381] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21381] write(1, "executing program\n", 18executing program
) = 18
[pid 21381] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21381] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21381] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21381] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21381] exit_group(0)               = ?
[pid 21381] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21381, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20530", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20530", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20530/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20530/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20530/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20530")                        = 0
mkdir("./20531", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21382 attached
 <unfinished ...>
[pid 21382] set_robust_list(0x5555589fe660, 24) = 0
[pid 21382] chdir("./20531")            = 0
[pid 21382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21382] setpgid(0, 0)               = 0
[pid 21382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21382
[pid 21382] <... openat resumed>)       = 3
[pid 21382] write(3, "1000", 4)         = 4
[pid 21382] close(3executing program
)                    = 0
[pid 21382] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21382] write(1, "executing program\n", 18) = 18
[pid 21382] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21382] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21382] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21382] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21382] exit_group(0)               = ?
[pid 21382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21382, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20531", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20531", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20531/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20531/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20531/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20531")                        = 0
mkdir("./20532", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21383 attached
, child_tidptr=0x5555589fe650) = 21383
[pid 21383] set_robust_list(0x5555589fe660, 24) = 0
[pid 21383] chdir("./20532")            = 0
[pid 21383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21383] setpgid(0, 0)               = 0
[pid 21383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21383] write(3, "1000", 4)         = 4
[pid 21383] close(3)                    = 0
[pid 21383] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21383] write(1, "executing program\n", 18executing program
) = 18
[pid 21383] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21383] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21383] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21383] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21383] exit_group(0)               = ?
[pid 21383] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21383, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20532", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20532", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20532/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20532/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20532/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20532")                        = 0
mkdir("./20533", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21384 attached
 <unfinished ...>
[pid 21384] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21384
[pid 21384] chdir("./20533")            = 0
[pid 21384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21384] setpgid(0, 0)               = 0
[pid 21384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21384] write(3, "1000", 4)         = 4
[pid 21384] close(3)                    = 0
[pid 21384] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21384] write(1, "executing program\n", 18executing program
) = 18
[pid 21384] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21384] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21384] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21384] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21384] exit_group(0)               = ?
[pid 21384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21384, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20533", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20533", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20533/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20533/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20533/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20533")                        = 0
mkdir("./20534", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21385 attached
 <unfinished ...>
[pid 21385] set_robust_list(0x5555589fe660, 24) = 0
[pid 21385] chdir("./20534" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21385
[pid 21385] <... chdir resumed>)        = 0
[pid 21385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21385] setpgid(0, 0)               = 0
[pid 21385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21385] write(3, "1000", 4)         = 4
[pid 21385] close(3)                    = 0
[pid 21385] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21385] write(1, "executing program\n", 18) = 18
[pid 21385] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21385] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21385] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21385] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21385] exit_group(0)               = ?
[pid 21385] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21385, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20534", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20534", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20534/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20534/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20534/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20534")                        = 0
mkdir("./20535", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21386 attached
 <unfinished ...>
[pid 21386] set_robust_list(0x5555589fe660, 24) = 0
[pid 21386] chdir("./20535")            = 0
[pid 21386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21386] setpgid(0, 0)               = 0
[pid 21386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21386
[pid 21386] <... openat resumed>)       = 3
[pid 21386] write(3, "1000", 4)         = 4
[pid 21386] close(3)                    = 0
[pid 21386] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21386] write(1, "executing program\n", 18executing program
) = 18
[pid 21386] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21386] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21386] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21386] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21386] exit_group(0)               = ?
[pid 21386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21386, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20535", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20535", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20535/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20535/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20535/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20535")                        = 0
mkdir("./20536", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21387 attached
, child_tidptr=0x5555589fe650) = 21387
[pid 21387] set_robust_list(0x5555589fe660, 24) = 0
[pid 21387] chdir("./20536")            = 0
[pid 21387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21387] setpgid(0, 0)               = 0
[pid 21387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21387] write(3, "1000", 4)         = 4
[pid 21387] close(3)                    = 0
[pid 21387] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21387] write(1, "executing program\n", 18executing program
) = 18
[pid 21387] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21387] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21387] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21387] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21387] exit_group(0)               = ?
[pid 21387] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21387, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20536", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20536", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20536/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20536/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20536/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20536")                        = 0
mkdir("./20537", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21388
./strace-static-x86_64: Process 21388 attached
[pid 21388] set_robust_list(0x5555589fe660, 24) = 0
[pid 21388] chdir("./20537")            = 0
[pid 21388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21388] setpgid(0, 0)               = 0
[pid 21388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21388] write(3, "1000", 4)         = 4
[pid 21388] close(3)                    = 0
[pid 21388] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21388] write(1, "executing program\n", 18executing program
) = 18
[pid 21388] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21388] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21388] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21388] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21388] exit_group(0)               = ?
[pid 21388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21388, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20537", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20537", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20537/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20537/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20537/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20537")                        = 0
mkdir("./20538", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21389
./strace-static-x86_64: Process 21389 attached
[pid 21389] set_robust_list(0x5555589fe660, 24) = 0
[pid 21389] chdir("./20538")            = 0
[pid 21389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21389] setpgid(0, 0)               = 0
[pid 21389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21389] write(3, "1000", 4)         = 4
[pid 21389] close(3)                    = 0
[pid 21389] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21389] write(1, "executing program\n", 18) = 18
executing program
[pid 21389] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21389] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21389] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21389] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21389] exit_group(0)               = ?
[pid 21389] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21389, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20538", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20538", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20538/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20538/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20538/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20538")                        = 0
mkdir("./20539", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21390
./strace-static-x86_64: Process 21390 attached
[pid 21390] set_robust_list(0x5555589fe660, 24) = 0
[pid 21390] chdir("./20539")            = 0
[pid 21390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21390] setpgid(0, 0)               = 0
[pid 21390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21390] write(3, "1000", 4)         = 4
[pid 21390] close(3)                    = 0
[pid 21390] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21390] write(1, "executing program\n", 18) = 18
[pid 21390] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21390] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21390] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21390] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21390] exit_group(0)               = ?
[pid 21390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21390, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20539", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20539", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20539/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20539/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20539/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20539")                        = 0
mkdir("./20540", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21391
./strace-static-x86_64: Process 21391 attached
[pid 21391] set_robust_list(0x5555589fe660, 24) = 0
[pid 21391] chdir("./20540")            = 0
[pid 21391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21391] setpgid(0, 0)               = 0
[pid 21391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21391] write(3, "1000", 4)         = 4
[pid 21391] close(3)                    = 0
[pid 21391] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21391] write(1, "executing program\n", 18executing program
) = 18
[pid 21391] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21391] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21391] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21391] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21391] exit_group(0)               = ?
[pid 21391] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21391, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20540", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20540", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20540/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20540/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20540/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20540")                        = 0
mkdir("./20541", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21392
./strace-static-x86_64: Process 21392 attached
[pid 21392] set_robust_list(0x5555589fe660, 24) = 0
[pid 21392] chdir("./20541")            = 0
[pid 21392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21392] setpgid(0, 0)               = 0
[pid 21392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21392] write(3, "1000", 4)         = 4
[pid 21392] close(3)                    = 0
[pid 21392] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21392] write(1, "executing program\n", 18executing program
) = 18
[pid 21392] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21392] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21392] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21392] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21392] exit_group(0)               = ?
[pid 21392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21392, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20541", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20541", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20541/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20541/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20541/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20541")                        = 0
mkdir("./20542", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21393
./strace-static-x86_64: Process 21393 attached
[pid 21393] set_robust_list(0x5555589fe660, 24) = 0
[pid 21393] chdir("./20542")            = 0
[pid 21393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21393] setpgid(0, 0)               = 0
[pid 21393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21393] write(3, "1000", 4)         = 4
[pid 21393] close(3)                    = 0
[pid 21393] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21393] write(1, "executing program\n", 18executing program
) = 18
[pid 21393] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21393] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21393] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21393] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21393] exit_group(0)               = ?
[pid 21393] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21393, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20542", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20542", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20542/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20542/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20542/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20542")                        = 0
mkdir("./20543", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21394
./strace-static-x86_64: Process 21394 attached
[pid 21394] set_robust_list(0x5555589fe660, 24) = 0
[pid 21394] chdir("./20543")            = 0
[pid 21394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21394] setpgid(0, 0)               = 0
[pid 21394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21394] write(3, "1000", 4)         = 4
[pid 21394] close(3)                    = 0
[pid 21394] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21394] write(1, "executing program\n", 18executing program
) = 18
[pid 21394] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21394] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21394] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21394] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21394] exit_group(0)               = ?
[pid 21394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21394, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20543", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20543", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20543/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20543/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20543/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20543")                        = 0
mkdir("./20544", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21395
./strace-static-x86_64: Process 21395 attached
[pid 21395] set_robust_list(0x5555589fe660, 24) = 0
[pid 21395] chdir("./20544")            = 0
[pid 21395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21395] setpgid(0, 0)               = 0
[pid 21395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21395] write(3, "1000", 4)         = 4
[pid 21395] close(3)                    = 0
[pid 21395] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21395] write(1, "executing program\n", 18) = 18
[pid 21395] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21395] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21395] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21395] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21395] exit_group(0)               = ?
[pid 21395] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21395, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20544", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20544", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20544/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20544/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20544/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20544")                        = 0
mkdir("./20545", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21396
./strace-static-x86_64: Process 21396 attached
[pid 21396] set_robust_list(0x5555589fe660, 24) = 0
[pid 21396] chdir("./20545")            = 0
[pid 21396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21396] setpgid(0, 0)               = 0
[pid 21396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21396] write(3, "1000", 4)         = 4
[pid 21396] close(3)                    = 0
[pid 21396] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21396] write(1, "executing program\n", 18) = 18
[pid 21396] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21396] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21396] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21396] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21396] exit_group(0)               = ?
[pid 21396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21396, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20545", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20545", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20545/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20545/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20545/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20545")                        = 0
mkdir("./20546", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21397 attached
, child_tidptr=0x5555589fe650) = 21397
[pid 21397] set_robust_list(0x5555589fe660, 24) = 0
[pid 21397] chdir("./20546")            = 0
[pid 21397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21397] setpgid(0, 0)               = 0
[pid 21397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21397] write(3, "1000", 4)         = 4
[pid 21397] close(3)                    = 0
[pid 21397] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21397] write(1, "executing program\n", 18) = 18
[pid 21397] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21397] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21397] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21397] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21397] exit_group(0)               = ?
[pid 21397] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21397, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20546", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20546", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20546/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20546/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20546/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20546")                        = 0
mkdir("./20547", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21398
./strace-static-x86_64: Process 21398 attached
[pid 21398] set_robust_list(0x5555589fe660, 24) = 0
[pid 21398] chdir("./20547")            = 0
[pid 21398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21398] setpgid(0, 0)               = 0
[pid 21398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21398] write(3, "1000", 4)         = 4
[pid 21398] close(3)                    = 0
[pid 21398] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21398] write(1, "executing program\n", 18) = 18
[pid 21398] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21398] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21398] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21398] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21398] exit_group(0)               = ?
[pid 21398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21398, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20547", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20547", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20547/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20547/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20547/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20547")                        = 0
mkdir("./20548", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21399
./strace-static-x86_64: Process 21399 attached
[pid 21399] set_robust_list(0x5555589fe660, 24) = 0
[pid 21399] chdir("./20548")            = 0
[pid 21399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21399] setpgid(0, 0)               = 0
[pid 21399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21399] write(3, "1000", 4)         = 4
[pid 21399] close(3)                    = 0
[pid 21399] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21399] write(1, "executing program\n", 18) = 18
[pid 21399] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21399] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21399] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21399] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21399] exit_group(0)               = ?
[pid 21399] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21399, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20548", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20548", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20548/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20548/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20548/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20548")                        = 0
mkdir("./20549", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21400
./strace-static-x86_64: Process 21400 attached
[pid 21400] set_robust_list(0x5555589fe660, 24) = 0
[pid 21400] chdir("./20549")            = 0
[pid 21400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21400] setpgid(0, 0)               = 0
[pid 21400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21400] write(3, "1000", 4)         = 4
[pid 21400] close(3)                    = 0
[pid 21400] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21400] write(1, "executing program\n", 18executing program
) = 18
[pid 21400] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21400] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21400] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21400] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21400] exit_group(0)               = ?
[pid 21400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21400, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20549", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20549", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20549/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20549/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20549/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20549")                        = 0
mkdir("./20550", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21401
./strace-static-x86_64: Process 21401 attached
[pid 21401] set_robust_list(0x5555589fe660, 24) = 0
[pid 21401] chdir("./20550")            = 0
[pid 21401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21401] setpgid(0, 0)               = 0
[pid 21401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21401] write(3, "1000", 4)         = 4
[pid 21401] close(3)                    = 0
[pid 21401] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21401] write(1, "executing program\n", 18) = 18
[pid 21401] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21401] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21401] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21401] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21401] exit_group(0)               = ?
[pid 21401] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21401, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20550", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20550", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20550/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20550/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20550/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20550")                        = 0
mkdir("./20551", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21402
./strace-static-x86_64: Process 21402 attached
[pid 21402] set_robust_list(0x5555589fe660, 24) = 0
[pid 21402] chdir("./20551")            = 0
[pid 21402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21402] setpgid(0, 0)               = 0
[pid 21402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21402] write(3, "1000", 4)         = 4
[pid 21402] close(3)                    = 0
[pid 21402] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21402] write(1, "executing program\n", 18executing program
) = 18
[pid 21402] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21402] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21402] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21402] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21402] exit_group(0)               = ?
[pid 21402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20551", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20551", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20551/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20551/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20551/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20551")                        = 0
mkdir("./20552", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21403
./strace-static-x86_64: Process 21403 attached
[pid 21403] set_robust_list(0x5555589fe660, 24) = 0
[pid 21403] chdir("./20552")            = 0
[pid 21403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21403] setpgid(0, 0)               = 0
[pid 21403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21403] write(3, "1000", 4)         = 4
[pid 21403] close(3)                    = 0
[pid 21403] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21403] write(1, "executing program\n", 18executing program
) = 18
[pid 21403] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21403] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21403] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21403] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21403] exit_group(0)               = ?
[pid 21403] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21403, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20552", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20552", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20552/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20552/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20552/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20552")                        = 0
mkdir("./20553", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21404
./strace-static-x86_64: Process 21404 attached
[pid 21404] set_robust_list(0x5555589fe660, 24) = 0
[pid 21404] chdir("./20553")            = 0
[pid 21404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21404] setpgid(0, 0)               = 0
[pid 21404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21404] write(3, "1000", 4)         = 4
[pid 21404] close(3)                    = 0
[pid 21404] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21404] write(1, "executing program\n", 18) = 18
[pid 21404] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21404] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21404] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21404] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21404] exit_group(0)               = ?
[pid 21404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21404, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20553", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20553", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20553/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20553/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20553/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20553")                        = 0
mkdir("./20554", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21405
./strace-static-x86_64: Process 21405 attached
[pid 21405] set_robust_list(0x5555589fe660, 24) = 0
[pid 21405] chdir("./20554")            = 0
[pid 21405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21405] setpgid(0, 0)               = 0
[pid 21405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21405] write(3, "1000", 4)         = 4
[pid 21405] close(3)                    = 0
[pid 21405] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21405] write(1, "executing program\n", 18) = 18
[pid 21405] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21405] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21405] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21405] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21405] exit_group(0)               = ?
[pid 21405] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21405, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20554", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20554", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20554/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20554/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20554/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20554")                        = 0
mkdir("./20555", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21406
./strace-static-x86_64: Process 21406 attached
[pid 21406] set_robust_list(0x5555589fe660, 24) = 0
[pid 21406] chdir("./20555")            = 0
[pid 21406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21406] setpgid(0, 0)               = 0
[pid 21406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21406] write(3, "1000", 4)         = 4
[pid 21406] close(3)                    = 0
[pid 21406] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21406] write(1, "executing program\n", 18executing program
) = 18
[pid 21406] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21406] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21406] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21406] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21406] exit_group(0)               = ?
[pid 21406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20555", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20555", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20555/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20555/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20555/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20555")                        = 0
mkdir("./20556", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21407
./strace-static-x86_64: Process 21407 attached
[pid 21407] set_robust_list(0x5555589fe660, 24) = 0
[pid 21407] chdir("./20556")            = 0
[pid 21407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21407] setpgid(0, 0)               = 0
[pid 21407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21407] write(3, "1000", 4)         = 4
[pid 21407] close(3)                    = 0
[pid 21407] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21407] write(1, "executing program\n", 18executing program
) = 18
[pid 21407] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21407] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21407] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21407] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21407] exit_group(0)               = ?
[pid 21407] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21407, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20556", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20556", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20556/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20556/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20556/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20556")                        = 0
mkdir("./20557", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21408
./strace-static-x86_64: Process 21408 attached
[pid 21408] set_robust_list(0x5555589fe660, 24) = 0
[pid 21408] chdir("./20557")            = 0
[pid 21408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21408] setpgid(0, 0)               = 0
[pid 21408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21408] write(3, "1000", 4)         = 4
[pid 21408] close(3)                    = 0
[pid 21408] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21408] write(1, "executing program\n", 18executing program
) = 18
[pid 21408] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21408] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21408] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21408] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21408] exit_group(0)               = ?
[pid 21408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20557", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20557", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20557/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20557/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20557/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20557")                        = 0
mkdir("./20558", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21409
./strace-static-x86_64: Process 21409 attached
[pid 21409] set_robust_list(0x5555589fe660, 24) = 0
[pid 21409] chdir("./20558")            = 0
[pid 21409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21409] setpgid(0, 0)               = 0
[pid 21409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21409] write(3, "1000", 4)         = 4
[pid 21409] close(3)                    = 0
[pid 21409] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21409] write(1, "executing program\n", 18executing program
) = 18
[pid 21409] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21409] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21409] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21409] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21409] exit_group(0)               = ?
[pid 21409] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21409, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20558", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20558", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20558/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20558/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20558/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20558")                        = 0
mkdir("./20559", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21411
./strace-static-x86_64: Process 21411 attached
[pid 21411] set_robust_list(0x5555589fe660, 24) = 0
[pid 21411] chdir("./20559")            = 0
[pid 21411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21411] setpgid(0, 0)               = 0
[pid 21411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21411] write(3, "1000", 4)         = 4
[pid 21411] close(3)                    = 0
[pid 21411] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21411] write(1, "executing program\n", 18executing program
) = 18
[pid 21411] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21411] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21411] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21411] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21411] exit_group(0)               = ?
[pid 21411] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21411, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20559", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20559", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20559/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20559/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20559/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20559")                        = 0
mkdir("./20560", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21412
./strace-static-x86_64: Process 21412 attached
[pid 21412] set_robust_list(0x5555589fe660, 24) = 0
[pid 21412] chdir("./20560")            = 0
[pid 21412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21412] setpgid(0, 0)               = 0
[pid 21412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21412] write(3, "1000", 4)         = 4
[pid 21412] close(3)                    = 0
[pid 21412] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21412] write(1, "executing program\n", 18executing program
) = 18
[pid 21412] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21412] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21412] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21412] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21412] exit_group(0)               = ?
[pid 21412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20560", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20560", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20560/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20560/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20560/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20560")                        = 0
mkdir("./20561", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21413
./strace-static-x86_64: Process 21413 attached
[pid 21413] set_robust_list(0x5555589fe660, 24) = 0
[pid 21413] chdir("./20561")            = 0
[pid 21413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21413] setpgid(0, 0)               = 0
[pid 21413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21413] write(3, "1000", 4)         = 4
[pid 21413] close(3)                    = 0
[pid 21413] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21413] write(1, "executing program\n", 18executing program
) = 18
[pid 21413] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21413] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21413] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21413] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21413] exit_group(0)               = ?
[pid 21413] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21413, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20561", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20561", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20561/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20561/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20561/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20561")                        = 0
mkdir("./20562", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21414
./strace-static-x86_64: Process 21414 attached
[pid 21414] set_robust_list(0x5555589fe660, 24) = 0
[pid 21414] chdir("./20562")            = 0
[pid 21414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21414] setpgid(0, 0)               = 0
[pid 21414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21414] write(3, "1000", 4)         = 4
[pid 21414] close(3)                    = 0
[pid 21414] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21414] write(1, "executing program\n", 18executing program
) = 18
[pid 21414] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21414] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21414] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21414] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21414] exit_group(0)               = ?
[pid 21414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20562", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20562", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20562/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20562/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20562/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20562")                        = 0
mkdir("./20563", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21415 attached
 <unfinished ...>
[pid 21415] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21415
[pid 21415] chdir("./20563")            = 0
[pid 21415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21415] setpgid(0, 0)               = 0
[pid 21415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21415] write(3, "1000", 4)         = 4
[pid 21415] close(3)                    = 0
[pid 21415] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21415] write(1, "executing program\n", 18executing program
) = 18
[pid 21415] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21415] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21415] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21415] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21415] exit_group(0)               = ?
[pid 21415] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21415, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20563", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20563", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20563/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20563/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20563/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20563")                        = 0
mkdir("./20564", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21416
./strace-static-x86_64: Process 21416 attached
[pid 21416] set_robust_list(0x5555589fe660, 24) = 0
[pid 21416] chdir("./20564")            = 0
[pid 21416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21416] setpgid(0, 0)               = 0
[pid 21416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21416] write(3, "1000", 4)         = 4
[pid 21416] close(3)                    = 0
[pid 21416] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21416] write(1, "executing program\n", 18executing program
) = 18
[pid 21416] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21416] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21416] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21416] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21416] exit_group(0)               = ?
[pid 21416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20564", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20564", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20564/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20564/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20564/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20564")                        = 0
mkdir("./20565", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21417
./strace-static-x86_64: Process 21417 attached
[pid 21417] set_robust_list(0x5555589fe660, 24) = 0
[pid 21417] chdir("./20565")            = 0
[pid 21417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21417] setpgid(0, 0)               = 0
[pid 21417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21417] write(3, "1000", 4)         = 4
[pid 21417] close(3)                    = 0
[pid 21417] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21417] write(1, "executing program\n", 18executing program
) = 18
[pid 21417] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21417] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21417] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21417] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21417] exit_group(0)               = ?
[pid 21417] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21417, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20565", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20565", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20565/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20565/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20565/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20565")                        = 0
mkdir("./20566", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21418 attached
 <unfinished ...>
[pid 21418] set_robust_list(0x5555589fe660, 24) = 0
[pid 21418] chdir("./20566")            = 0
[pid 21418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21418] setpgid(0, 0)               = 0
[pid 21418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21418
[pid 21418] <... openat resumed>)       = 3
[pid 21418] write(3, "1000", 4)         = 4
[pid 21418] close(3)                    = 0
[pid 21418] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21418] write(1, "executing program\n", 18executing program
) = 18
[pid 21418] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21418] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21418] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21418] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21418] exit_group(0)               = ?
[pid 21418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20566", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20566", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20566/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20566/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20566/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20566")                        = 0
mkdir("./20567", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21419
./strace-static-x86_64: Process 21419 attached
[pid 21419] set_robust_list(0x5555589fe660, 24) = 0
[pid 21419] chdir("./20567")            = 0
[pid 21419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21419] setpgid(0, 0)               = 0
[pid 21419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21419] write(3, "1000", 4)         = 4
[pid 21419] close(3)                    = 0
[pid 21419] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21419] write(1, "executing program\n", 18executing program
) = 18
[pid 21419] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21419] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21419] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21419] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21419] exit_group(0)               = ?
[pid 21419] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21419, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20567", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20567", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20567/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20567/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20567/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20567")                        = 0
mkdir("./20568", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21420 attached
, child_tidptr=0x5555589fe650) = 21420
[pid 21420] set_robust_list(0x5555589fe660, 24) = 0
[pid 21420] chdir("./20568")            = 0
[pid 21420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21420] setpgid(0, 0)               = 0
[pid 21420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21420] write(3, "1000", 4)         = 4
[pid 21420] close(3)                    = 0
[pid 21420] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21420] write(1, "executing program\n", 18executing program
) = 18
[pid 21420] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21420] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21420] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21420] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21420] exit_group(0)               = ?
[pid 21420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20568", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20568", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20568/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20568/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20568/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20568")                        = 0
mkdir("./20569", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21421 attached
 <unfinished ...>
[pid 21421] set_robust_list(0x5555589fe660, 24) = 0
[pid 21421] chdir("./20569")            = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21421
[pid 21421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21421] setpgid(0, 0)               = 0
[pid 21421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21421] write(3, "1000", 4)         = 4
[pid 21421] close(3)                    = 0
[pid 21421] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21421] write(1, "executing program\n", 18executing program
) = 18
[pid 21421] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21421] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21421] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21421] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21421] exit_group(0)               = ?
[pid 21421] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21421, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20569", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20569", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20569/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20569/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20569/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20569")                        = 0
mkdir("./20570", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21422 attached
, child_tidptr=0x5555589fe650) = 21422
[pid 21422] set_robust_list(0x5555589fe660, 24) = 0
[pid 21422] chdir("./20570")            = 0
[pid 21422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21422] setpgid(0, 0)               = 0
[pid 21422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21422] write(3, "1000", 4)         = 4
[pid 21422] close(3)                    = 0
[pid 21422] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21422] write(1, "executing program\n", 18executing program
) = 18
[pid 21422] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21422] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21422] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21422] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21422] exit_group(0)               = ?
[pid 21422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21422, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20570", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20570", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20570/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20570/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20570/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20570")                        = 0
mkdir("./20571", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21423
./strace-static-x86_64: Process 21423 attached
[pid 21423] set_robust_list(0x5555589fe660, 24) = 0
[pid 21423] chdir("./20571")            = 0
[pid 21423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21423] setpgid(0, 0)               = 0
[pid 21423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21423] write(3, "1000", 4)         = 4
[pid 21423] close(3)                    = 0
[pid 21423] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21423] write(1, "executing program\n", 18executing program
) = 18
[pid 21423] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21423] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21423] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21423] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21423] exit_group(0)               = ?
[pid 21423] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21423, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20571", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20571", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20571/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20571/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20571/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20571")                        = 0
mkdir("./20572", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21424
./strace-static-x86_64: Process 21424 attached
[pid 21424] set_robust_list(0x5555589fe660, 24) = 0
[pid 21424] chdir("./20572")            = 0
[pid 21424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21424] setpgid(0, 0)               = 0
[pid 21424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21424] write(3, "1000", 4)         = 4
[pid 21424] close(3)                    = 0
[pid 21424] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21424] write(1, "executing program\n", 18executing program
) = 18
[pid 21424] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21424] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21424] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21424] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21424] exit_group(0)               = ?
[pid 21424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20572", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20572", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20572/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20572/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20572/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20572")                        = 0
mkdir("./20573", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21425
./strace-static-x86_64: Process 21425 attached
[pid 21425] set_robust_list(0x5555589fe660, 24) = 0
[pid 21425] chdir("./20573")            = 0
[pid 21425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21425] setpgid(0, 0)               = 0
[pid 21425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21425] write(3, "1000", 4)         = 4
[pid 21425] close(3)                    = 0
[pid 21425] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21425] write(1, "executing program\n", 18executing program
) = 18
[pid 21425] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21425] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21425] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21425] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21425] exit_group(0)               = ?
[pid 21425] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21425, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20573", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20573", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20573/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20573/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20573/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20573")                        = 0
mkdir("./20574", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21426
./strace-static-x86_64: Process 21426 attached
[pid 21426] set_robust_list(0x5555589fe660, 24) = 0
[pid 21426] chdir("./20574")            = 0
[pid 21426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21426] setpgid(0, 0)               = 0
[pid 21426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21426] write(3, "1000", 4)         = 4
[pid 21426] close(3)                    = 0
[pid 21426] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21426] write(1, "executing program\n", 18executing program
) = 18
[pid 21426] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21426] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21426] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21426] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21426] exit_group(0)               = ?
[pid 21426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20574", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20574", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20574/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20574/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20574/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20574")                        = 0
mkdir("./20575", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21427
./strace-static-x86_64: Process 21427 attached
[pid 21427] set_robust_list(0x5555589fe660, 24) = 0
[pid 21427] chdir("./20575")            = 0
[pid 21427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21427] setpgid(0, 0)               = 0
[pid 21427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21427] write(3, "1000", 4)         = 4
[pid 21427] close(3)                    = 0
[pid 21427] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21427] write(1, "executing program\n", 18) = 18
[pid 21427] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21427] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21427] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21427] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21427] exit_group(0)               = ?
[pid 21427] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21427, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20575", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20575", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20575/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20575/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20575/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20575")                        = 0
mkdir("./20576", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21428
./strace-static-x86_64: Process 21428 attached
[pid 21428] set_robust_list(0x5555589fe660, 24) = 0
[pid 21428] chdir("./20576")            = 0
[pid 21428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21428] setpgid(0, 0)               = 0
executing program
[pid 21428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21428] write(3, "1000", 4)         = 4
[pid 21428] close(3)                    = 0
[pid 21428] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21428] write(1, "executing program\n", 18) = 18
[pid 21428] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21428] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21428] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21428] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21428] exit_group(0)               = ?
[pid 21428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20576", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20576", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20576/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20576/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20576/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20576")                        = 0
mkdir("./20577", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21429
./strace-static-x86_64: Process 21429 attached
[pid 21429] set_robust_list(0x5555589fe660, 24) = 0
[pid 21429] chdir("./20577")            = 0
[pid 21429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21429] setpgid(0, 0)               = 0
[pid 21429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21429] write(3, "1000", 4)         = 4
[pid 21429] close(3)                    = 0
[pid 21429] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21429] write(1, "executing program\n", 18executing program
) = 18
[pid 21429] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21429] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21429] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21429] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21429] exit_group(0)               = ?
[pid 21429] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21429, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20577", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20577", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20577/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20577/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20577/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20577")                        = 0
mkdir("./20578", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21430
./strace-static-x86_64: Process 21430 attached
[pid 21430] set_robust_list(0x5555589fe660, 24) = 0
[pid 21430] chdir("./20578")            = 0
[pid 21430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21430] setpgid(0, 0)               = 0
[pid 21430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21430] write(3, "1000", 4)         = 4
[pid 21430] close(3)                    = 0
[pid 21430] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21430] write(1, "executing program\n", 18executing program
) = 18
[pid 21430] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21430] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21430] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21430] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21430] exit_group(0)               = ?
[pid 21430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20578", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20578", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20578/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20578/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20578/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20578")                        = 0
mkdir("./20579", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21431
./strace-static-x86_64: Process 21431 attached
[pid 21431] set_robust_list(0x5555589fe660, 24) = 0
[pid 21431] chdir("./20579")            = 0
[pid 21431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21431] setpgid(0, 0)               = 0
[pid 21431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21431] write(3, "1000", 4)         = 4
[pid 21431] close(3)                    = 0
[pid 21431] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21431] write(1, "executing program\n", 18executing program
) = 18
[pid 21431] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21431] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21431] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21431] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21431] exit_group(0)               = ?
[pid 21431] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21431, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20579", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20579", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20579/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20579/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20579/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20579")                        = 0
mkdir("./20580", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21432
./strace-static-x86_64: Process 21432 attached
[pid 21432] set_robust_list(0x5555589fe660, 24) = 0
[pid 21432] chdir("./20580")            = 0
[pid 21432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21432] setpgid(0, 0)               = 0
[pid 21432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21432] write(3, "1000", 4)         = 4
[pid 21432] close(3)                    = 0
[pid 21432] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21432] write(1, "executing program\n", 18executing program
) = 18
[pid 21432] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21432] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21432] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21432] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21432] exit_group(0)               = ?
[pid 21432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21432, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20580", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20580", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20580/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20580/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20580/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20580")                        = 0
mkdir("./20581", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21433
./strace-static-x86_64: Process 21433 attached
[pid 21433] set_robust_list(0x5555589fe660, 24) = 0
[pid 21433] chdir("./20581")            = 0
[pid 21433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21433] setpgid(0, 0)               = 0
[pid 21433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21433] write(3, "1000", 4)         = 4
[pid 21433] close(3)                    = 0
[pid 21433] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21433] write(1, "executing program\n", 18executing program
) = 18
[pid 21433] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21433] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21433] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21433] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21433] exit_group(0)               = ?
[pid 21433] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21433, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20581", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20581", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20581/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20581/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20581/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20581")                        = 0
mkdir("./20582", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21434
./strace-static-x86_64: Process 21434 attached
[pid 21434] set_robust_list(0x5555589fe660, 24) = 0
[pid 21434] chdir("./20582")            = 0
[pid 21434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21434] setpgid(0, 0)               = 0
[pid 21434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21434] write(3, "1000", 4)         = 4
[pid 21434] close(3)                    = 0
[pid 21434] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21434] write(1, "executing program\n", 18executing program
) = 18
[pid 21434] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21434] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21434] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21434] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21434] exit_group(0)               = ?
[pid 21434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20582", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20582", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20582/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20582/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20582/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20582")                        = 0
mkdir("./20583", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21435 attached
 <unfinished ...>
[pid 21435] set_robust_list(0x5555589fe660, 24) = 0
[pid 21435] chdir("./20583" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21435
[pid 21435] <... chdir resumed>)        = 0
[pid 21435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21435] setpgid(0, 0)               = 0
[pid 21435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21435] write(3, "1000", 4)         = 4
[pid 21435] close(3)                    = 0
[pid 21435] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21435] write(1, "executing program\n", 18executing program
) = 18
[pid 21435] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21435] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21435] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21435] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21435] exit_group(0)               = ?
[pid 21435] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21435, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20583", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20583", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20583/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20583/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20583/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20583")                        = 0
mkdir("./20584", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21436
./strace-static-x86_64: Process 21436 attached
[pid 21436] set_robust_list(0x5555589fe660, 24) = 0
[pid 21436] chdir("./20584")            = 0
[pid 21436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21436] setpgid(0, 0)               = 0
[pid 21436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21436] write(3, "1000", 4)         = 4
[pid 21436] close(3)                    = 0
[pid 21436] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21436] write(1, "executing program\n", 18executing program
) = 18
[pid 21436] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21436] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21436] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21436] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21436] exit_group(0)               = ?
[pid 21436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20584", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20584", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20584/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20584/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20584/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20584")                        = 0
mkdir("./20585", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21437
./strace-static-x86_64: Process 21437 attached
[pid 21437] set_robust_list(0x5555589fe660, 24) = 0
[pid 21437] chdir("./20585")            = 0
[pid 21437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21437] setpgid(0, 0)               = 0
[pid 21437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21437] write(3, "1000", 4)         = 4
[pid 21437] close(3)                    = 0
[pid 21437] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21437] write(1, "executing program\n", 18executing program
) = 18
[pid 21437] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21437] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21437] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21437] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21437] exit_group(0)               = ?
[pid 21437] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21437, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20585", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20585", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20585/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20585/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20585/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20585")                        = 0
mkdir("./20586", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21438 attached
, child_tidptr=0x5555589fe650) = 21438
[pid 21438] set_robust_list(0x5555589fe660, 24) = 0
[pid 21438] chdir("./20586")            = 0
[pid 21438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21438] setpgid(0, 0)               = 0
[pid 21438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21438] write(3, "1000", 4)         = 4
[pid 21438] close(3)                    = 0
[pid 21438] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21438] write(1, "executing program\n", 18executing program
) = 18
[pid 21438] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21438] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21438] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21438] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21438] exit_group(0)               = ?
[pid 21438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21438, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20586", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20586", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20586/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20586/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20586/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20586")                        = 0
mkdir("./20587", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21439
./strace-static-x86_64: Process 21439 attached
[pid 21439] set_robust_list(0x5555589fe660, 24) = 0
[pid 21439] chdir("./20587")            = 0
[pid 21439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21439] setpgid(0, 0)               = 0
[pid 21439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21439] write(3, "1000", 4)         = 4
[pid 21439] close(3)                    = 0
[pid 21439] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21439] write(1, "executing program\n", 18) = 18
[pid 21439] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21439] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21439] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21439] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21439] exit_group(0)               = ?
[pid 21439] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21439, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20587", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20587", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20587/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20587/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20587/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20587")                        = 0
mkdir("./20588", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21440
./strace-static-x86_64: Process 21440 attached
[pid 21440] set_robust_list(0x5555589fe660, 24) = 0
[pid 21440] chdir("./20588")            = 0
[pid 21440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21440] setpgid(0, 0)               = 0
[pid 21440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21440] write(3, "1000", 4)         = 4
[pid 21440] close(3)                    = 0
[pid 21440] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21440] write(1, "executing program\n", 18executing program
) = 18
[pid 21440] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21440] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21440] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21440] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21440] exit_group(0)               = ?
[pid 21440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20588", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20588", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20588/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20588/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20588/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20588")                        = 0
mkdir("./20589", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21441
./strace-static-x86_64: Process 21441 attached
[pid 21441] set_robust_list(0x5555589fe660, 24) = 0
[pid 21441] chdir("./20589")            = 0
[pid 21441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21441] setpgid(0, 0)               = 0
[pid 21441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21441] write(3, "1000", 4)         = 4
[pid 21441] close(3)                    = 0
[pid 21441] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21441] write(1, "executing program\n", 18executing program
) = 18
[pid 21441] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21441] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21441] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21441] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21441] exit_group(0)               = ?
[pid 21441] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21441, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20589", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20589", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20589/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20589/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20589/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20589")                        = 0
mkdir("./20590", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21442
./strace-static-x86_64: Process 21442 attached
[pid 21442] set_robust_list(0x5555589fe660, 24) = 0
[pid 21442] chdir("./20590")            = 0
[pid 21442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21442] setpgid(0, 0)               = 0
[pid 21442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21442] write(3, "1000", 4)         = 4
[pid 21442] close(3)                    = 0
[pid 21442] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21442] write(1, "executing program\n", 18executing program
) = 18
[pid 21442] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21442] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21442] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21442] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21442] exit_group(0)               = ?
[pid 21442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20590", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20590", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20590/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20590/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20590/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20590")                        = 0
mkdir("./20591", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21443
./strace-static-x86_64: Process 21443 attached
[pid 21443] set_robust_list(0x5555589fe660, 24) = 0
[pid 21443] chdir("./20591")            = 0
[pid 21443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21443] setpgid(0, 0)               = 0
[pid 21443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21443] write(3, "1000", 4)         = 4
[pid 21443] close(3)                    = 0
[pid 21443] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21443] write(1, "executing program\n", 18executing program
) = 18
[pid 21443] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21443] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21443] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21443] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21443] exit_group(0)               = ?
[pid 21443] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21443, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20591", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20591", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20591/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20591/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20591/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20591")                        = 0
mkdir("./20592", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21444
./strace-static-x86_64: Process 21444 attached
[pid 21444] set_robust_list(0x5555589fe660, 24) = 0
[pid 21444] chdir("./20592")            = 0
[pid 21444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21444] setpgid(0, 0)               = 0
[pid 21444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21444] write(3, "1000", 4)         = 4
[pid 21444] close(3)                    = 0
[pid 21444] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21444] write(1, "executing program\n", 18executing program
) = 18
[pid 21444] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21444] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21444] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21444] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21444] exit_group(0)               = ?
[pid 21444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21444, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20592", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20592", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20592/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20592/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20592/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20592")                        = 0
mkdir("./20593", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21445
./strace-static-x86_64: Process 21445 attached
[pid 21445] set_robust_list(0x5555589fe660, 24) = 0
[pid 21445] chdir("./20593")            = 0
[pid 21445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21445] setpgid(0, 0)               = 0
[pid 21445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21445] write(3, "1000", 4)         = 4
[pid 21445] close(3)                    = 0
[pid 21445] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21445] write(1, "executing program\n", 18) = 18
[pid 21445] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21445] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21445] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21445] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21445] exit_group(0)               = ?
[pid 21445] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21445, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20593", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20593", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20593/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20593/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20593/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20593")                        = 0
mkdir("./20594", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21446
./strace-static-x86_64: Process 21446 attached
[pid 21446] set_robust_list(0x5555589fe660, 24) = 0
[pid 21446] chdir("./20594")            = 0
[pid 21446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21446] setpgid(0, 0)               = 0
[pid 21446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21446] write(3, "1000", 4)         = 4
[pid 21446] close(3)                    = 0
[pid 21446] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21446] write(1, "executing program\n", 18executing program
) = 18
[pid 21446] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21446] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21446] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21446] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21446] exit_group(0)               = ?
[pid 21446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20594", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20594", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20594/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20594/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20594/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20594")                        = 0
mkdir("./20595", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21447
./strace-static-x86_64: Process 21447 attached
[pid 21447] set_robust_list(0x5555589fe660, 24) = 0
[pid 21447] chdir("./20595")            = 0
[pid 21447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21447] setpgid(0, 0)               = 0
[pid 21447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21447] write(3, "1000", 4)         = 4
[pid 21447] close(3)                    = 0
[pid 21447] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21447] write(1, "executing program\n", 18executing program
) = 18
[pid 21447] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21447] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21447] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21447] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21447] exit_group(0)               = ?
[pid 21447] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21447, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20595", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20595", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20595/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20595/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20595/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20595")                        = 0
mkdir("./20596", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21448 attached
 <unfinished ...>
[pid 21448] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21448
[pid 21448] chdir("./20596")            = 0
[pid 21448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21448] setpgid(0, 0)               = 0
[pid 21448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21448] write(3, "1000", 4)         = 4
[pid 21448] close(3)                    = 0
[pid 21448] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21448] write(1, "executing program\n", 18executing program
) = 18
[pid 21448] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21448] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21448] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21448] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21448] exit_group(0)               = ?
[pid 21448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20596", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20596", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20596/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20596/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20596/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20596")                        = 0
mkdir("./20597", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21449
./strace-static-x86_64: Process 21449 attached
[pid 21449] set_robust_list(0x5555589fe660, 24) = 0
[pid 21449] chdir("./20597")            = 0
[pid 21449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21449] setpgid(0, 0)               = 0
[pid 21449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21449] write(3, "1000", 4)         = 4
[pid 21449] close(3)                    = 0
[pid 21449] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21449] write(1, "executing program\n", 18executing program
) = 18
[pid 21449] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21449] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21449] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21449] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21449] exit_group(0)               = ?
[pid 21449] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21449, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20597", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20597", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20597/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20597/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20597/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20597")                        = 0
mkdir("./20598", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21450
./strace-static-x86_64: Process 21450 attached
[pid 21450] set_robust_list(0x5555589fe660, 24) = 0
[pid 21450] chdir("./20598")            = 0
[pid 21450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21450] setpgid(0, 0)               = 0
[pid 21450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21450] write(3, "1000", 4)         = 4
[pid 21450] close(3)                    = 0
[pid 21450] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21450] write(1, "executing program\n", 18) = 18
[pid 21450] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21450] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21450] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21450] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21450] exit_group(0)               = ?
[pid 21450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20598", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20598", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20598/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20598/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20598/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20598")                        = 0
mkdir("./20599", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21451
./strace-static-x86_64: Process 21451 attached
[pid 21451] set_robust_list(0x5555589fe660, 24) = 0
[pid 21451] chdir("./20599")            = 0
[pid 21451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21451] setpgid(0, 0)               = 0
[pid 21451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21451] write(3, "1000", 4)         = 4
[pid 21451] close(3)                    = 0
[pid 21451] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21451] write(1, "executing program\n", 18) = 18
[pid 21451] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21451] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21451] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21451] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21451] exit_group(0)               = ?
[pid 21451] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21451, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20599", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20599", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20599/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20599/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20599/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20599")                        = 0
mkdir("./20600", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21452
./strace-static-x86_64: Process 21452 attached
[pid 21452] set_robust_list(0x5555589fe660, 24) = 0
[pid 21452] chdir("./20600")            = 0
[pid 21452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21452] setpgid(0, 0)               = 0
[pid 21452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21452] write(3, "1000", 4)         = 4
[pid 21452] close(3)                    = 0
[pid 21452] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21452] write(1, "executing program\n", 18executing program
) = 18
[pid 21452] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21452] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21452] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21452] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21452] exit_group(0)               = ?
[pid 21452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20600", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20600", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20600/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20600/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20600/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20600")                        = 0
mkdir("./20601", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21453
./strace-static-x86_64: Process 21453 attached
[pid 21453] set_robust_list(0x5555589fe660, 24) = 0
[pid 21453] chdir("./20601")            = 0
[pid 21453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21453] setpgid(0, 0)               = 0
[pid 21453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21453] write(3, "1000", 4)         = 4
[pid 21453] close(3)                    = 0
[pid 21453] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21453] write(1, "executing program\n", 18executing program
) = 18
[pid 21453] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21453] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21453] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21453] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21453] exit_group(0)               = ?
[pid 21453] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21453, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20601", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20601", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20601/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20601/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20601/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20601")                        = 0
mkdir("./20602", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21454
./strace-static-x86_64: Process 21454 attached
[pid 21454] set_robust_list(0x5555589fe660, 24) = 0
[pid 21454] chdir("./20602")            = 0
[pid 21454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21454] setpgid(0, 0)               = 0
[pid 21454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21454] write(3, "1000", 4)         = 4
[pid 21454] close(3)                    = 0
[pid 21454] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21454] write(1, "executing program\n", 18executing program
) = 18
[pid 21454] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21454] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21454] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21454] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21454] exit_group(0)               = ?
[pid 21454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20602", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20602", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20602/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20602/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20602/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20602")                        = 0
mkdir("./20603", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21455
./strace-static-x86_64: Process 21455 attached
[pid 21455] set_robust_list(0x5555589fe660, 24) = 0
[pid 21455] chdir("./20603")            = 0
[pid 21455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21455] setpgid(0, 0)               = 0
[pid 21455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21455] write(3, "1000", 4)         = 4
[pid 21455] close(3)                    = 0
[pid 21455] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21455] write(1, "executing program\n", 18executing program
) = 18
[pid 21455] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21455] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21455] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21455] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21455] exit_group(0)               = ?
[pid 21455] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21455, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20603", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20603", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20603/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20603/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20603/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20603")                        = 0
mkdir("./20604", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21456
./strace-static-x86_64: Process 21456 attached
[pid 21456] set_robust_list(0x5555589fe660, 24) = 0
[pid 21456] chdir("./20604")            = 0
[pid 21456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21456] setpgid(0, 0)               = 0
[pid 21456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21456] write(3, "1000", 4)         = 4
[pid 21456] close(3)                    = 0
[pid 21456] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21456] write(1, "executing program\n", 18) = 18
[pid 21456] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21456] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21456] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21456] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21456] exit_group(0)               = ?
[pid 21456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20604", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20604", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20604/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20604/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20604/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20604")                        = 0
mkdir("./20605", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21457 attached
 <unfinished ...>
[pid 21457] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21457
[pid 21457] chdir("./20605")            = 0
[pid 21457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21457] setpgid(0, 0)               = 0
[pid 21457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21457] write(3, "1000", 4)         = 4
[pid 21457] close(3)                    = 0
[pid 21457] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21457] write(1, "executing program\n", 18executing program
) = 18
[pid 21457] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21457] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21457] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21457] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21457] exit_group(0)               = ?
[pid 21457] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21457, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20605", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20605", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20605/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20605/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20605/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20605")                        = 0
mkdir("./20606", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21458
./strace-static-x86_64: Process 21458 attached
[pid 21458] set_robust_list(0x5555589fe660, 24) = 0
[pid 21458] chdir("./20606")            = 0
[pid 21458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21458] setpgid(0, 0)               = 0
[pid 21458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21458] write(3, "1000", 4)         = 4
[pid 21458] close(3)                    = 0
[pid 21458] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21458] write(1, "executing program\n", 18executing program
) = 18
[pid 21458] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21458] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21458] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21458] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21458] exit_group(0)               = ?
[pid 21458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20606", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20606", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20606/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20606/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20606/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20606")                        = 0
mkdir("./20607", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21459 attached
 <unfinished ...>
[pid 21459] set_robust_list(0x5555589fe660, 24) = 0
[pid 21459] chdir("./20607" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21459
[pid 21459] <... chdir resumed>)        = 0
[pid 21459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21459] setpgid(0, 0)               = 0
[pid 21459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21459] write(3, "1000", 4)         = 4
[pid 21459] close(3)                    = 0
[pid 21459] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21459] write(1, "executing program\n", 18) = 18
[pid 21459] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21459] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21459] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21459] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21459] exit_group(0)               = ?
[pid 21459] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21459, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20607", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20607", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20607/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20607/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20607/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20607")                        = 0
mkdir("./20608", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21460
./strace-static-x86_64: Process 21460 attached
[pid 21460] set_robust_list(0x5555589fe660, 24) = 0
[pid 21460] chdir("./20608")            = 0
[pid 21460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21460] setpgid(0, 0)               = 0
[pid 21460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21460] write(3, "1000", 4)         = 4
[pid 21460] close(3)                    = 0
[pid 21460] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21460] write(1, "executing program\n", 18executing program
) = 18
[pid 21460] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21460] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21460] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21460] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21460] exit_group(0)               = ?
[pid 21460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21460, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20608", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20608", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20608/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20608/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20608/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20608")                        = 0
mkdir("./20609", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21461
./strace-static-x86_64: Process 21461 attached
[pid 21461] set_robust_list(0x5555589fe660, 24) = 0
[pid 21461] chdir("./20609")            = 0
[pid 21461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21461] setpgid(0, 0)               = 0
[pid 21461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21461] write(3, "1000", 4)         = 4
[pid 21461] close(3)                    = 0
[pid 21461] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21461] write(1, "executing program\n", 18executing program
) = 18
[pid 21461] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21461] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21461] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21461] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21461] exit_group(0)               = ?
[pid 21461] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21461, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20609", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20609", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20609/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20609/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20609/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20609")                        = 0
mkdir("./20610", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21462
./strace-static-x86_64: Process 21462 attached
[pid 21462] set_robust_list(0x5555589fe660, 24) = 0
[pid 21462] chdir("./20610")            = 0
[pid 21462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21462] setpgid(0, 0)               = 0
[pid 21462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21462] write(3, "1000", 4)         = 4
[pid 21462] close(3)                    = 0
[pid 21462] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21462] write(1, "executing program\n", 18executing program
) = 18
[pid 21462] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21462] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21462] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21462] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21462] exit_group(0)               = ?
[pid 21462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20610", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20610", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20610/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20610/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20610/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20610")                        = 0
mkdir("./20611", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21463
./strace-static-x86_64: Process 21463 attached
[pid 21463] set_robust_list(0x5555589fe660, 24) = 0
[pid 21463] chdir("./20611")            = 0
[pid 21463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21463] setpgid(0, 0)               = 0
[pid 21463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21463] write(3, "1000", 4)         = 4
[pid 21463] close(3)                    = 0
[pid 21463] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21463] write(1, "executing program\n", 18executing program
) = 18
[pid 21463] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21463] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21463] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21463] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21463] exit_group(0)               = ?
[pid 21463] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21463, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20611", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20611", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20611/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20611/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20611/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20611")                        = 0
mkdir("./20612", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21464
./strace-static-x86_64: Process 21464 attached
[pid 21464] set_robust_list(0x5555589fe660, 24) = 0
[pid 21464] chdir("./20612")            = 0
[pid 21464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21464] setpgid(0, 0)               = 0
[pid 21464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21464] write(3, "1000", 4)         = 4
[pid 21464] close(3)                    = 0
[pid 21464] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21464] write(1, "executing program\n", 18executing program
) = 18
[pid 21464] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21464] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21464] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21464] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21464] exit_group(0)               = ?
[pid 21464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20612", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20612", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20612/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20612/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20612/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20612")                        = 0
mkdir("./20613", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21465
./strace-static-x86_64: Process 21465 attached
[pid 21465] set_robust_list(0x5555589fe660, 24) = 0
[pid 21465] chdir("./20613")            = 0
[pid 21465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21465] setpgid(0, 0)               = 0
[pid 21465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21465] write(3, "1000", 4)         = 4
[pid 21465] close(3)                    = 0
[pid 21465] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21465] write(1, "executing program\n", 18executing program
) = 18
[pid 21465] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21465] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21465] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21465] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21465] exit_group(0)               = ?
[pid 21465] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21465, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20613", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20613", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20613/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20613/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20613/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20613")                        = 0
mkdir("./20614", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21466
./strace-static-x86_64: Process 21466 attached
[pid 21466] set_robust_list(0x5555589fe660, 24) = 0
[pid 21466] chdir("./20614")            = 0
[pid 21466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21466] setpgid(0, 0)               = 0
[pid 21466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21466] write(3, "1000", 4)         = 4
[pid 21466] close(3)                    = 0
[pid 21466] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21466] write(1, "executing program\n", 18executing program
) = 18
[pid 21466] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21466] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21466] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21466] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21466] exit_group(0)               = ?
[pid 21466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20614", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20614", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20614/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20614/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20614/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20614")                        = 0
mkdir("./20615", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21467 attached
, child_tidptr=0x5555589fe650) = 21467
[pid 21467] set_robust_list(0x5555589fe660, 24) = 0
[pid 21467] chdir("./20615")            = 0
[pid 21467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21467] setpgid(0, 0)               = 0
[pid 21467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21467] write(3, "1000", 4)         = 4
[pid 21467] close(3)                    = 0
[pid 21467] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21467] write(1, "executing program\n", 18) = 18
[pid 21467] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21467] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21467] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21467] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21467] exit_group(0)               = ?
[pid 21467] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21467, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
umount2("./20615", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20615", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20615/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20615/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20615/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20615")                        = 0
mkdir("./20616", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21468
./strace-static-x86_64: Process 21468 attached
[pid 21468] set_robust_list(0x5555589fe660, 24) = 0
[pid 21468] chdir("./20616")            = 0
[pid 21468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21468] setpgid(0, 0)               = 0
[pid 21468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21468] write(3, "1000", 4)         = 4
[pid 21468] close(3)                    = 0
[pid 21468] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21468] write(1, "executing program\n", 18) = 18
[pid 21468] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21468] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21468] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21468] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21468] exit_group(0)               = ?
[pid 21468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20616", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20616", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20616/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20616/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20616/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20616")                        = 0
mkdir("./20617", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21469
./strace-static-x86_64: Process 21469 attached
[pid 21469] set_robust_list(0x5555589fe660, 24) = 0
[pid 21469] chdir("./20617")            = 0
[pid 21469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21469] setpgid(0, 0)               = 0
[pid 21469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21469] write(3, "1000", 4)         = 4
[pid 21469] close(3)                    = 0
[pid 21469] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21469] write(1, "executing program\n", 18executing program
) = 18
[pid 21469] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21469] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21469] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21469] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21469] exit_group(0)               = ?
[pid 21469] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21469, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20617", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20617", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20617/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20617/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20617/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20617")                        = 0
mkdir("./20618", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21470
./strace-static-x86_64: Process 21470 attached
[pid 21470] set_robust_list(0x5555589fe660, 24) = 0
[pid 21470] chdir("./20618")            = 0
[pid 21470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21470] setpgid(0, 0)               = 0
[pid 21470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21470] write(3, "1000", 4)         = 4
[pid 21470] close(3)                    = 0
[pid 21470] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21470] write(1, "executing program\n", 18executing program
) = 18
[pid 21470] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21470] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21470] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21470] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21470] exit_group(0)               = ?
[pid 21470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20618", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20618", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20618/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20618/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20618/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20618")                        = 0
mkdir("./20619", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21471
./strace-static-x86_64: Process 21471 attached
[pid 21471] set_robust_list(0x5555589fe660, 24) = 0
[pid 21471] chdir("./20619")            = 0
[pid 21471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21471] setpgid(0, 0)               = 0
[pid 21471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21471] write(3, "1000", 4)         = 4
[pid 21471] close(3)                    = 0
[pid 21471] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21471] write(1, "executing program\n", 18) = 18
[pid 21471] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21471] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21471] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21471] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21471] exit_group(0)               = ?
[pid 21471] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21471, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20619", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20619", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20619/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20619/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20619/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20619")                        = 0
mkdir("./20620", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21472 attached
, child_tidptr=0x5555589fe650) = 21472
[pid 21472] set_robust_list(0x5555589fe660, 24) = 0
[pid 21472] chdir("./20620")            = 0
[pid 21472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21472] setpgid(0, 0)               = 0
[pid 21472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21472] write(3, "1000", 4)         = 4
[pid 21472] close(3)                    = 0
[pid 21472] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21472] write(1, "executing program\n", 18executing program
) = 18
[pid 21472] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21472] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21472] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21472] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21472] exit_group(0)               = ?
[pid 21472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20620", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20620", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20620/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20620/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20620/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20620")                        = 0
mkdir("./20621", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21473 attached
 <unfinished ...>
[pid 21473] set_robust_list(0x5555589fe660, 24) = 0
[pid 21473] chdir("./20621" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21473
[pid 21473] <... chdir resumed>)        = 0
[pid 21473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21473] setpgid(0, 0)               = 0
[pid 21473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21473] write(3, "1000", 4)         = 4
[pid 21473] close(3)                    = 0
[pid 21473] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21473] write(1, "executing program\n", 18executing program
) = 18
[pid 21473] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21473] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21473] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21473] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21473] exit_group(0)               = ?
[pid 21473] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21473, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20621", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20621", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20621/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20621/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20621/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20621")                        = 0
mkdir("./20622", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21474
./strace-static-x86_64: Process 21474 attached
[pid 21474] set_robust_list(0x5555589fe660, 24) = 0
[pid 21474] chdir("./20622")            = 0
[pid 21474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21474] setpgid(0, 0)               = 0
[pid 21474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21474] write(3, "1000", 4)         = 4
[pid 21474] close(3)                    = 0
[pid 21474] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21474] write(1, "executing program\n", 18executing program
) = 18
[pid 21474] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21474] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21474] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21474] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21474] exit_group(0)               = ?
[pid 21474] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21474, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20622", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20622", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20622/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20622/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20622/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20622")                        = 0
mkdir("./20623", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21475
./strace-static-x86_64: Process 21475 attached
[pid 21475] set_robust_list(0x5555589fe660, 24) = 0
[pid 21475] chdir("./20623")            = 0
[pid 21475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21475] setpgid(0, 0)               = 0
[pid 21475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21475] write(3, "1000", 4)         = 4
[pid 21475] close(3)                    = 0
[pid 21475] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21475] write(1, "executing program\n", 18) = 18
[pid 21475] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21475] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21475] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21475] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21475] exit_group(0)               = ?
[pid 21475] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21475, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20623", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20623", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20623/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20623/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20623/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20623")                        = 0
mkdir("./20624", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21476
./strace-static-x86_64: Process 21476 attached
[pid 21476] set_robust_list(0x5555589fe660, 24) = 0
[pid 21476] chdir("./20624")            = 0
[pid 21476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21476] setpgid(0, 0)               = 0
[pid 21476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21476] write(3, "1000", 4)         = 4
[pid 21476] close(3)                    = 0
[pid 21476] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21476] write(1, "executing program\n", 18executing program
) = 18
[pid 21476] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21476] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21476] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21476] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21476] exit_group(0)               = ?
[pid 21476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20624", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20624", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20624/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20624/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20624/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20624")                        = 0
mkdir("./20625", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21477
./strace-static-x86_64: Process 21477 attached
[pid 21477] set_robust_list(0x5555589fe660, 24) = 0
[pid 21477] chdir("./20625")            = 0
[pid 21477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21477] setpgid(0, 0)               = 0
[pid 21477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21477] write(3, "1000", 4)         = 4
[pid 21477] close(3)                    = 0
[pid 21477] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21477] write(1, "executing program\n", 18executing program
) = 18
[pid 21477] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21477] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21477] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21477] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21477] exit_group(0)               = ?
[pid 21477] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21477, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20625", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20625", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20625/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20625/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20625/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20625")                        = 0
mkdir("./20626", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21478
./strace-static-x86_64: Process 21478 attached
[pid 21478] set_robust_list(0x5555589fe660, 24) = 0
[pid 21478] chdir("./20626")            = 0
[pid 21478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21478] setpgid(0, 0)               = 0
[pid 21478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21478] write(3, "1000", 4)         = 4
[pid 21478] close(3)                    = 0
[pid 21478] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21478] write(1, "executing program\n", 18executing program
) = 18
[pid 21478] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21478] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21478] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21478] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21478] exit_group(0)               = ?
[pid 21478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21478, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20626", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20626", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20626/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20626/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20626/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20626")                        = 0
mkdir("./20627", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21479
./strace-static-x86_64: Process 21479 attached
[pid 21479] set_robust_list(0x5555589fe660, 24) = 0
[pid 21479] chdir("./20627")            = 0
[pid 21479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21479] setpgid(0, 0)               = 0
[pid 21479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21479] write(3, "1000", 4)         = 4
[pid 21479] close(3)                    = 0
[pid 21479] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21479] write(1, "executing program\n", 18executing program
) = 18
[pid 21479] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21479] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21479] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21479] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21479] exit_group(0)               = ?
[pid 21479] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21479, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20627", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20627", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20627/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20627/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20627/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20627")                        = 0
mkdir("./20628", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21480
./strace-static-x86_64: Process 21480 attached
[pid 21480] set_robust_list(0x5555589fe660, 24) = 0
[pid 21480] chdir("./20628")            = 0
[pid 21480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21480] setpgid(0, 0)               = 0
[pid 21480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21480] write(3, "1000", 4)         = 4
[pid 21480] close(3)                    = 0
[pid 21480] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21480] write(1, "executing program\n", 18executing program
) = 18
[pid 21480] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21480] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21480] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21480] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21480] exit_group(0)               = ?
[pid 21480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20628", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20628", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20628/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20628/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20628/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20628")                        = 0
mkdir("./20629", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21482
./strace-static-x86_64: Process 21482 attached
[pid 21482] set_robust_list(0x5555589fe660, 24) = 0
[pid 21482] chdir("./20629")            = 0
[pid 21482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21482] setpgid(0, 0)               = 0
[pid 21482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21482] write(3, "1000", 4)         = 4
[pid 21482] close(3)                    = 0
[pid 21482] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21482] write(1, "executing program\n", 18executing program
) = 18
[pid 21482] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21482] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21482] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21482] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21482] exit_group(0)               = ?
[pid 21482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20629", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20629", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20629/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20629/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20629/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20629")                        = 0
mkdir("./20630", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21483
./strace-static-x86_64: Process 21483 attached
[pid 21483] set_robust_list(0x5555589fe660, 24) = 0
[pid 21483] chdir("./20630")            = 0
[pid 21483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21483] setpgid(0, 0)               = 0
[pid 21483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21483] write(3, "1000", 4)         = 4
[pid 21483] close(3)                    = 0
[pid 21483] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21483] write(1, "executing program\n", 18executing program
) = 18
[pid 21483] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21483] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21483] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21483] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21483] exit_group(0)               = ?
[pid 21483] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21483, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20630", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20630", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20630/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20630/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20630/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20630")                        = 0
mkdir("./20631", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21484
./strace-static-x86_64: Process 21484 attached
[pid 21484] set_robust_list(0x5555589fe660, 24) = 0
[pid 21484] chdir("./20631")            = 0
[pid 21484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21484] setpgid(0, 0)               = 0
[pid 21484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21484] write(3, "1000", 4)         = 4
[pid 21484] close(3)                    = 0
[pid 21484] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21484] write(1, "executing program\n", 18executing program
) = 18
[pid 21484] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21484] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21484] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21484] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21484] exit_group(0)               = ?
[pid 21484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20631", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20631", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20631/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20631/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20631/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20631")                        = 0
mkdir("./20632", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21485 attached
 <unfinished ...>
[pid 21485] set_robust_list(0x5555589fe660, 24) = 0
[pid 21485] chdir("./20632" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21485
[pid 21485] <... chdir resumed>)        = 0
[pid 21485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21485] setpgid(0, 0)               = 0
[pid 21485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21485] write(3, "1000", 4)         = 4
[pid 21485] close(3)                    = 0
[pid 21485] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21485] write(1, "executing program\n", 18) = 18
[pid 21485] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21485] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21485] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21485] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21485] exit_group(0)               = ?
[pid 21485] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21485, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20632", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20632", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20632/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20632/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20632/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20632")                        = 0
mkdir("./20633", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21486
./strace-static-x86_64: Process 21486 attached
[pid 21486] set_robust_list(0x5555589fe660, 24) = 0
[pid 21486] chdir("./20633")            = 0
[pid 21486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21486] setpgid(0, 0)               = 0
[pid 21486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21486] write(3, "1000", 4)         = 4
[pid 21486] close(3)                    = 0
[pid 21486] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21486] write(1, "executing program\n", 18executing program
) = 18
[pid 21486] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21486] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21486] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21486] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21486] exit_group(0)               = ?
[pid 21486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20633", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20633", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20633/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20633/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20633/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20633")                        = 0
mkdir("./20634", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21487
./strace-static-x86_64: Process 21487 attached
[pid 21487] set_robust_list(0x5555589fe660, 24) = 0
[pid 21487] chdir("./20634")            = 0
[pid 21487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21487] setpgid(0, 0)               = 0
[pid 21487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21487] write(3, "1000", 4)         = 4
[pid 21487] close(3)                    = 0
[pid 21487] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21487] write(1, "executing program\n", 18executing program
) = 18
[pid 21487] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21487] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21487] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21487] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21487] exit_group(0)               = ?
[pid 21487] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21487, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20634", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20634", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20634/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20634/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20634/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20634")                        = 0
mkdir("./20635", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21488
./strace-static-x86_64: Process 21488 attached
[pid 21488] set_robust_list(0x5555589fe660, 24) = 0
[pid 21488] chdir("./20635")            = 0
[pid 21488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21488] setpgid(0, 0)               = 0
[pid 21488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21488] write(3, "1000", 4)         = 4
[pid 21488] close(3)                    = 0
[pid 21488] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21488] write(1, "executing program\n", 18) = 18
[pid 21488] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21488] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21488] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21488] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21488] exit_group(0)               = ?
[pid 21488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20635", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20635", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20635/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20635/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20635/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20635")                        = 0
mkdir("./20636", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21489
./strace-static-x86_64: Process 21489 attached
[pid 21489] set_robust_list(0x5555589fe660, 24) = 0
[pid 21489] chdir("./20636")            = 0
[pid 21489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21489] setpgid(0, 0)               = 0
[pid 21489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21489] write(3, "1000", 4)         = 4
[pid 21489] close(3)                    = 0
[pid 21489] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21489] write(1, "executing program\n", 18executing program
) = 18
[pid 21489] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21489] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21489] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21489] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21489] exit_group(0)               = ?
[pid 21489] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21489, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20636", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20636", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20636/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20636/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20636/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20636")                        = 0
mkdir("./20637", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21490
./strace-static-x86_64: Process 21490 attached
[pid 21490] set_robust_list(0x5555589fe660, 24) = 0
[pid 21490] chdir("./20637")            = 0
[pid 21490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21490] setpgid(0, 0)               = 0
[pid 21490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21490] write(3, "1000", 4)         = 4
[pid 21490] close(3)                    = 0
[pid 21490] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21490] write(1, "executing program\n", 18executing program
) = 18
[pid 21490] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21490] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21490] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21490] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21490] exit_group(0)               = ?
[pid 21490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20637", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20637", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20637/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20637/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20637/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20637")                        = 0
mkdir("./20638", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21491
./strace-static-x86_64: Process 21491 attached
[pid 21491] set_robust_list(0x5555589fe660, 24) = 0
[pid 21491] chdir("./20638")            = 0
[pid 21491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21491] setpgid(0, 0)               = 0
[pid 21491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21491] write(3, "1000", 4)         = 4
[pid 21491] close(3)                    = 0
[pid 21491] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21491] write(1, "executing program\n", 18) = 18
[pid 21491] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21491] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21491] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21491] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21491] exit_group(0)               = ?
[pid 21491] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21491, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20638", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20638", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20638/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20638/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20638/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20638")                        = 0
mkdir("./20639", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21492
./strace-static-x86_64: Process 21492 attached
[pid 21492] set_robust_list(0x5555589fe660, 24) = 0
[pid 21492] chdir("./20639")            = 0
[pid 21492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21492] setpgid(0, 0)               = 0
[pid 21492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21492] write(3, "1000", 4)         = 4
[pid 21492] close(3)                    = 0
[pid 21492] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21492] write(1, "executing program\n", 18) = 18
[pid 21492] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21492] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21492] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21492] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21492] exit_group(0)               = ?
[pid 21492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20639", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20639", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20639/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20639/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20639/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20639")                        = 0
mkdir("./20640", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21493
./strace-static-x86_64: Process 21493 attached
[pid 21493] set_robust_list(0x5555589fe660, 24) = 0
[pid 21493] chdir("./20640")            = 0
[pid 21493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21493] setpgid(0, 0)               = 0
[pid 21493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21493] write(3, "1000", 4)         = 4
[pid 21493] close(3)                    = 0
[pid 21493] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21493] write(1, "executing program\n", 18executing program
) = 18
[pid 21493] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21493] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21493] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21493] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21493] exit_group(0)               = ?
[pid 21493] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21493, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20640", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20640", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20640/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20640/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20640/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20640")                        = 0
mkdir("./20641", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21494
./strace-static-x86_64: Process 21494 attached
[pid 21494] set_robust_list(0x5555589fe660, 24) = 0
[pid 21494] chdir("./20641")            = 0
[pid 21494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21494] setpgid(0, 0)               = 0
[pid 21494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21494] write(3, "1000", 4)         = 4
[pid 21494] close(3)                    = 0
[pid 21494] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21494] write(1, "executing program\n", 18executing program
) = 18
[pid 21494] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21494] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21494] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21494] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21494] exit_group(0)               = ?
[pid 21494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20641", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20641", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20641/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20641/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20641/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20641")                        = 0
mkdir("./20642", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21495 attached
 <unfinished ...>
[pid 21495] set_robust_list(0x5555589fe660, 24) = 0
[pid 21495] chdir("./20642" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21495
[pid 21495] <... chdir resumed>)        = 0
[pid 21495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21495] setpgid(0, 0)               = 0
[pid 21495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21495] write(3, "1000", 4)         = 4
[pid 21495] close(3)                    = 0
[pid 21495] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21495] write(1, "executing program\n", 18) = 18
[pid 21495] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21495] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21495] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21495] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21495] exit_group(0)               = ?
[pid 21495] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21495, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20642", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20642", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20642/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20642/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20642/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20642")                        = 0
mkdir("./20643", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21496
./strace-static-x86_64: Process 21496 attached
[pid 21496] set_robust_list(0x5555589fe660, 24) = 0
[pid 21496] chdir("./20643")            = 0
[pid 21496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21496] setpgid(0, 0)               = 0
[pid 21496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21496] write(3, "1000", 4)         = 4
[pid 21496] close(3)                    = 0
[pid 21496] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21496] write(1, "executing program\n", 18executing program
) = 18
[pid 21496] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21496] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21496] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21496] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21496] exit_group(0)               = ?
[pid 21496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20643", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20643", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20643/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20643/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20643/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20643")                        = 0
mkdir("./20644", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21497 attached
 <unfinished ...>
[pid 21497] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21497
[pid 21497] chdir("./20644")            = 0
[pid 21497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21497] setpgid(0, 0)               = 0
[pid 21497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21497] write(3, "1000", 4)         = 4
[pid 21497] close(3)                    = 0
[pid 21497] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21497] write(1, "executing program\n", 18executing program
) = 18
[pid 21497] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21497] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21497] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21497] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21497] exit_group(0)               = ?
[pid 21497] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21497, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20644", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20644", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20644/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20644/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20644/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20644")                        = 0
mkdir("./20645", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21498
./strace-static-x86_64: Process 21498 attached
[pid 21498] set_robust_list(0x5555589fe660, 24) = 0
[pid 21498] chdir("./20645")            = 0
[pid 21498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21498] setpgid(0, 0)               = 0
[pid 21498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21498] write(3, "1000", 4)         = 4
[pid 21498] close(3)                    = 0
[pid 21498] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21498] write(1, "executing program\n", 18) = 18
[pid 21498] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21498] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21498] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21498] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21498] exit_group(0)               = ?
[pid 21498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21498, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20645", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20645", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20645/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20645/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20645/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20645")                        = 0
mkdir("./20646", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21499
./strace-static-x86_64: Process 21499 attached
[pid 21499] set_robust_list(0x5555589fe660, 24) = 0
[pid 21499] chdir("./20646")            = 0
[pid 21499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21499] setpgid(0, 0)               = 0
[pid 21499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21499] write(3, "1000", 4)         = 4
[pid 21499] close(3)                    = 0
[pid 21499] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21499] write(1, "executing program\n", 18) = 18
[pid 21499] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21499] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21499] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21499] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21499] exit_group(0)               = ?
[pid 21499] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21499, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20646", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20646", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20646/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20646/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20646/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20646")                        = 0
mkdir("./20647", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21500
./strace-static-x86_64: Process 21500 attached
[pid 21500] set_robust_list(0x5555589fe660, 24) = 0
[pid 21500] chdir("./20647")            = 0
[pid 21500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21500] setpgid(0, 0)               = 0
[pid 21500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21500] write(3, "1000", 4)         = 4
[pid 21500] close(3)                    = 0
[pid 21500] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21500] write(1, "executing program\n", 18) = 18
[pid 21500] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21500] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21500] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21500] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21500] exit_group(0)               = ?
[pid 21500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20647", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20647", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20647/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20647/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20647/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20647")                        = 0
mkdir("./20648", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21501 attached
, child_tidptr=0x5555589fe650) = 21501
[pid 21501] set_robust_list(0x5555589fe660, 24) = 0
[pid 21501] chdir("./20648")            = 0
[pid 21501] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21501] setpgid(0, 0)               = 0
[pid 21501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21501] write(3, "1000", 4)         = 4
[pid 21501] close(3)                    = 0
[pid 21501] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21501] write(1, "executing program\n", 18executing program
) = 18
[pid 21501] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21501] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21501] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21501] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21501] exit_group(0)               = ?
[pid 21501] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21501, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20648", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20648", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20648/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20648/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20648/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20648")                        = 0
mkdir("./20649", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21502
./strace-static-x86_64: Process 21502 attached
[pid 21502] set_robust_list(0x5555589fe660, 24) = 0
[pid 21502] chdir("./20649")            = 0
[pid 21502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21502] setpgid(0, 0)               = 0
[pid 21502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21502] write(3, "1000", 4)         = 4
[pid 21502] close(3)                    = 0
[pid 21502] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21502] write(1, "executing program\n", 18executing program
) = 18
[pid 21502] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21502] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21502] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21502] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21502] exit_group(0)               = ?
[pid 21502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20649", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20649", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20649/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20649/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20649/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20649")                        = 0
mkdir("./20650", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21503
./strace-static-x86_64: Process 21503 attached
[pid 21503] set_robust_list(0x5555589fe660, 24) = 0
[pid 21503] chdir("./20650")            = 0
[pid 21503] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21503] setpgid(0, 0)               = 0
[pid 21503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21503] write(3, "1000", 4)         = 4
[pid 21503] close(3)                    = 0
[pid 21503] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21503] write(1, "executing program\n", 18executing program
) = 18
[pid 21503] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21503] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21503] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21503] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21503] exit_group(0)               = ?
[pid 21503] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21503, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20650", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20650", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20650/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20650/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20650/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20650")                        = 0
mkdir("./20651", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21504
./strace-static-x86_64: Process 21504 attached
[pid 21504] set_robust_list(0x5555589fe660, 24) = 0
[pid 21504] chdir("./20651")            = 0
[pid 21504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21504] setpgid(0, 0)               = 0
[pid 21504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21504] write(3, "1000", 4)         = 4
[pid 21504] close(3)                    = 0
[pid 21504] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21504] write(1, "executing program\n", 18executing program
) = 18
[pid 21504] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21504] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21504] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21504] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21504] exit_group(0)               = ?
[pid 21504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20651", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20651", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20651/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20651/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20651/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20651")                        = 0
mkdir("./20652", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21505
./strace-static-x86_64: Process 21505 attached
[pid 21505] set_robust_list(0x5555589fe660, 24) = 0
[pid 21505] chdir("./20652")            = 0
[pid 21505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21505] setpgid(0, 0)               = 0
[pid 21505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21505] write(3, "1000", 4)         = 4
[pid 21505] close(3)                    = 0
[pid 21505] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21505] write(1, "executing program\n", 18executing program
) = 18
[pid 21505] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21505] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21505] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21505] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21505] exit_group(0)               = ?
[pid 21505] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21505, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20652", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20652", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20652/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20652/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20652/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20652")                        = 0
mkdir("./20653", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21506
./strace-static-x86_64: Process 21506 attached
[pid 21506] set_robust_list(0x5555589fe660, 24) = 0
[pid 21506] chdir("./20653")            = 0
[pid 21506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21506] setpgid(0, 0)               = 0
[pid 21506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21506] write(3, "1000", 4)         = 4
[pid 21506] close(3)                    = 0
[pid 21506] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21506] write(1, "executing program\n", 18executing program
) = 18
[pid 21506] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21506] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21506] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21506] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21506] exit_group(0)               = ?
[pid 21506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20653", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20653", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20653/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20653/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20653/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20653")                        = 0
mkdir("./20654", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21507
./strace-static-x86_64: Process 21507 attached
[pid 21507] set_robust_list(0x5555589fe660, 24) = 0
[pid 21507] chdir("./20654")            = 0
[pid 21507] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21507] setpgid(0, 0)               = 0
[pid 21507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21507] write(3, "1000", 4)         = 4
[pid 21507] close(3)                    = 0
[pid 21507] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21507] write(1, "executing program\n", 18executing program
) = 18
[pid 21507] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21507] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21507] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21507] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21507] exit_group(0)               = ?
[pid 21507] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21507, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20654", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20654", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20654/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20654/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20654/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20654")                        = 0
mkdir("./20655", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21508
./strace-static-x86_64: Process 21508 attached
[pid 21508] set_robust_list(0x5555589fe660, 24) = 0
[pid 21508] chdir("./20655")            = 0
[pid 21508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21508] setpgid(0, 0)               = 0
[pid 21508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21508] write(3, "1000", 4)         = 4
[pid 21508] close(3)                    = 0
[pid 21508] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21508] write(1, "executing program\n", 18executing program
) = 18
[pid 21508] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21508] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21508] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21508] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21508] exit_group(0)               = ?
[pid 21508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20655", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20655", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20655/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20655/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20655/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20655")                        = 0
mkdir("./20656", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21509
./strace-static-x86_64: Process 21509 attached
[pid 21509] set_robust_list(0x5555589fe660, 24) = 0
[pid 21509] chdir("./20656")            = 0
[pid 21509] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21509] setpgid(0, 0)               = 0
[pid 21509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21509] write(3, "1000", 4)         = 4
[pid 21509] close(3)                    = 0
[pid 21509] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21509] write(1, "executing program\n", 18) = 18
[pid 21509] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21509] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21509] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21509] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21509] exit_group(0)               = ?
[pid 21509] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21509, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20656", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20656", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20656/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20656/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20656/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20656")                        = 0
mkdir("./20657", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21510
./strace-static-x86_64: Process 21510 attached
[pid 21510] set_robust_list(0x5555589fe660, 24) = 0
[pid 21510] chdir("./20657")            = 0
[pid 21510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21510] setpgid(0, 0)               = 0
[pid 21510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21510] write(3, "1000", 4)         = 4
[pid 21510] close(3)                    = 0
[pid 21510] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21510] write(1, "executing program\n", 18executing program
) = 18
[pid 21510] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21510] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21510] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21510] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21510] exit_group(0)               = ?
[pid 21510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20657", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20657", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20657/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20657/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20657/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20657")                        = 0
mkdir("./20658", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21511
./strace-static-x86_64: Process 21511 attached
[pid 21511] set_robust_list(0x5555589fe660, 24) = 0
[pid 21511] chdir("./20658")            = 0
[pid 21511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21511] setpgid(0, 0)               = 0
[pid 21511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21511] write(3, "1000", 4)         = 4
[pid 21511] close(3)                    = 0
[pid 21511] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21511] write(1, "executing program\n", 18) = 18
[pid 21511] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21511] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21511] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21511] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21511] exit_group(0)               = ?
[pid 21511] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21511, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20658", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20658", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20658/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20658/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20658/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20658")                        = 0
mkdir("./20659", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21512
./strace-static-x86_64: Process 21512 attached
[pid 21512] set_robust_list(0x5555589fe660, 24) = 0
[pid 21512] chdir("./20659")            = 0
[pid 21512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21512] setpgid(0, 0)               = 0
[pid 21512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21512] write(3, "1000", 4)         = 4
[pid 21512] close(3)                    = 0
[pid 21512] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21512] write(1, "executing program\n", 18executing program
) = 18
[pid 21512] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21512] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21512] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21512] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21512] exit_group(0)               = ?
[pid 21512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20659", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20659", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20659/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20659/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20659/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20659")                        = 0
mkdir("./20660", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21513
./strace-static-x86_64: Process 21513 attached
[pid 21513] set_robust_list(0x5555589fe660, 24) = 0
[pid 21513] chdir("./20660")            = 0
[pid 21513] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21513] setpgid(0, 0)               = 0
[pid 21513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21513] write(3, "1000", 4)         = 4
[pid 21513] close(3)                    = 0
executing program
[pid 21513] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21513] write(1, "executing program\n", 18) = 18
[pid 21513] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21513] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21513] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21513] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21513] exit_group(0)               = ?
[pid 21513] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21513, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20660", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20660", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20660/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20660/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20660/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20660")                        = 0
mkdir("./20661", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21514 attached
, child_tidptr=0x5555589fe650) = 21514
[pid 21514] set_robust_list(0x5555589fe660, 24) = 0
[pid 21514] chdir("./20661")            = 0
[pid 21514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21514] setpgid(0, 0)               = 0
[pid 21514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21514] write(3, "1000", 4)         = 4
[pid 21514] close(3)                    = 0
[pid 21514] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21514] write(1, "executing program\n", 18executing program
) = 18
[pid 21514] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21514] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21514] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21514] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21514] exit_group(0)               = ?
[pid 21514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20661", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20661", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20661/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20661/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20661/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20661")                        = 0
mkdir("./20662", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21515
./strace-static-x86_64: Process 21515 attached
[pid 21515] set_robust_list(0x5555589fe660, 24) = 0
[pid 21515] chdir("./20662")            = 0
[pid 21515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21515] setpgid(0, 0)               = 0
[pid 21515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21515] write(3, "1000", 4)         = 4
[pid 21515] close(3)                    = 0
[pid 21515] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21515] write(1, "executing program\n", 18executing program
) = 18
[pid 21515] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21515] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21515] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21515] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21515] exit_group(0)               = ?
[pid 21515] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21515, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20662", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20662", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20662/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20662/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20662/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20662")                        = 0
mkdir("./20663", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21516
./strace-static-x86_64: Process 21516 attached
[pid 21516] set_robust_list(0x5555589fe660, 24) = 0
[pid 21516] chdir("./20663")            = 0
[pid 21516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21516] setpgid(0, 0)               = 0
[pid 21516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21516] write(3, "1000", 4)         = 4
[pid 21516] close(3)                    = 0
[pid 21516] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21516] write(1, "executing program\n", 18executing program
) = 18
[pid 21516] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21516] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21516] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21516] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21516] exit_group(0)               = ?
[pid 21516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20663", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20663", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20663/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20663/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20663/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20663")                        = 0
mkdir("./20664", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21517
./strace-static-x86_64: Process 21517 attached
[pid 21517] set_robust_list(0x5555589fe660, 24) = 0
[pid 21517] chdir("./20664")            = 0
[pid 21517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21517] setpgid(0, 0)               = 0
[pid 21517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21517] write(3, "1000", 4)         = 4
[pid 21517] close(3)                    = 0
[pid 21517] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21517] write(1, "executing program\n", 18executing program
) = 18
[pid 21517] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21517] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21517] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21517] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21517] exit_group(0)               = ?
[pid 21517] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21517, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20664", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20664", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20664/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20664/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20664/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20664")                        = 0
mkdir("./20665", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21518
./strace-static-x86_64: Process 21518 attached
[pid 21518] set_robust_list(0x5555589fe660, 24) = 0
[pid 21518] chdir("./20665")            = 0
[pid 21518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21518] setpgid(0, 0)               = 0
[pid 21518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21518] write(3, "1000", 4)         = 4
[pid 21518] close(3)                    = 0
[pid 21518] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21518] write(1, "executing program\n", 18) = 18
[pid 21518] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21518] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21518] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21518] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21518] exit_group(0)               = ?
[pid 21518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20665", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20665", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20665/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20665/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20665/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20665")                        = 0
mkdir("./20666", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21519
./strace-static-x86_64: Process 21519 attached
[pid 21519] set_robust_list(0x5555589fe660, 24) = 0
[pid 21519] chdir("./20666")            = 0
[pid 21519] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21519] setpgid(0, 0)               = 0
[pid 21519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21519] write(3, "1000", 4)         = 4
[pid 21519] close(3)                    = 0
[pid 21519] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21519] write(1, "executing program\n", 18) = 18
[pid 21519] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21519] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21519] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21519] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21519] exit_group(0)               = ?
[pid 21519] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21519, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20666", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20666", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20666/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20666/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20666/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20666")                        = 0
mkdir("./20667", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21520
./strace-static-x86_64: Process 21520 attached
[pid 21520] set_robust_list(0x5555589fe660, 24) = 0
[pid 21520] chdir("./20667")            = 0
[pid 21520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21520] setpgid(0, 0)               = 0
[pid 21520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21520] write(3, "1000", 4)         = 4
[pid 21520] close(3)                    = 0
[pid 21520] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21520] write(1, "executing program\n", 18executing program
) = 18
[pid 21520] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21520] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21520] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21520] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21520] exit_group(0)               = ?
[pid 21520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20667", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20667", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20667/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20667/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20667/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20667")                        = 0
mkdir("./20668", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21521
./strace-static-x86_64: Process 21521 attached
[pid 21521] set_robust_list(0x5555589fe660, 24) = 0
[pid 21521] chdir("./20668")            = 0
[pid 21521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21521] setpgid(0, 0)               = 0
[pid 21521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21521] write(3, "1000", 4)         = 4
[pid 21521] close(3)                    = 0
[pid 21521] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21521] write(1, "executing program\n", 18executing program
) = 18
[pid 21521] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21521] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21521] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21521] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21521] exit_group(0)               = ?
[pid 21521] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21521, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20668", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20668", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20668/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20668/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20668/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20668")                        = 0
mkdir("./20669", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21522
./strace-static-x86_64: Process 21522 attached
[pid 21522] set_robust_list(0x5555589fe660, 24) = 0
[pid 21522] chdir("./20669")            = 0
[pid 21522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21522] setpgid(0, 0)               = 0
[pid 21522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21522] write(3, "1000", 4)         = 4
[pid 21522] close(3)                    = 0
[pid 21522] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21522] write(1, "executing program\n", 18) = 18
[pid 21522] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21522] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21522] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21522] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21522] exit_group(0)               = ?
[pid 21522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20669", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20669", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20669/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20669/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20669/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20669")                        = 0
mkdir("./20670", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21523
./strace-static-x86_64: Process 21523 attached
[pid 21523] set_robust_list(0x5555589fe660, 24) = 0
[pid 21523] chdir("./20670")            = 0
[pid 21523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21523] setpgid(0, 0)               = 0
[pid 21523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21523] write(3, "1000", 4)         = 4
[pid 21523] close(3)                    = 0
[pid 21523] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21523] write(1, "executing program\n", 18executing program
) = 18
[pid 21523] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21523] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21523] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21523] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21523] exit_group(0)               = ?
[pid 21523] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21523, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20670", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20670", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20670/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20670/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20670/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20670")                        = 0
mkdir("./20671", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21524
./strace-static-x86_64: Process 21524 attached
[pid 21524] set_robust_list(0x5555589fe660, 24) = 0
[pid 21524] chdir("./20671")            = 0
[pid 21524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21524] setpgid(0, 0)               = 0
[pid 21524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21524] write(3, "1000", 4)         = 4
[pid 21524] close(3)                    = 0
[pid 21524] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21524] write(1, "executing program\n", 18executing program
) = 18
[pid 21524] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21524] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21524] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21524] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21524] exit_group(0)               = ?
[pid 21524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20671", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20671", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20671/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20671/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20671/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20671")                        = 0
mkdir("./20672", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21525
./strace-static-x86_64: Process 21525 attached
[pid 21525] set_robust_list(0x5555589fe660, 24) = 0
[pid 21525] chdir("./20672")            = 0
[pid 21525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21525] setpgid(0, 0)               = 0
[pid 21525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21525] write(3, "1000", 4)         = 4
[pid 21525] close(3)                    = 0
[pid 21525] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21525] write(1, "executing program\n", 18executing program
) = 18
[pid 21525] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21525] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21525] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21525] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21525] exit_group(0)               = ?
[pid 21525] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21525, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20672", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20672", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20672/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20672/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20672/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20672")                        = 0
mkdir("./20673", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21526
./strace-static-x86_64: Process 21526 attached
[pid 21526] set_robust_list(0x5555589fe660, 24) = 0
[pid 21526] chdir("./20673")            = 0
[pid 21526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21526] setpgid(0, 0)               = 0
[pid 21526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21526] write(3, "1000", 4)         = 4
[pid 21526] close(3)                    = 0
[pid 21526] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21526] write(1, "executing program\n", 18executing program
) = 18
[pid 21526] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21526] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21526] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21526] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21526] exit_group(0)               = ?
[pid 21526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20673", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20673", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20673/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20673/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20673/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20673")                        = 0
mkdir("./20674", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21527
./strace-static-x86_64: Process 21527 attached
[pid 21527] set_robust_list(0x5555589fe660, 24) = 0
[pid 21527] chdir("./20674")            = 0
[pid 21527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21527] setpgid(0, 0)               = 0
[pid 21527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21527] write(3, "1000", 4)         = 4
[pid 21527] close(3)                    = 0
[pid 21527] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21527] write(1, "executing program\n", 18) = 18
[pid 21527] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21527] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21527] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21527] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21527] exit_group(0)               = ?
[pid 21527] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21527, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20674", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20674", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20674/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20674/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20674/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20674")                        = 0
mkdir("./20675", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21528
./strace-static-x86_64: Process 21528 attached
[pid 21528] set_robust_list(0x5555589fe660, 24) = 0
[pid 21528] chdir("./20675")            = 0
[pid 21528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21528] setpgid(0, 0)               = 0
[pid 21528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21528] write(3, "1000", 4)         = 4
[pid 21528] close(3)                    = 0
[pid 21528] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21528] write(1, "executing program\n", 18) = 18
[pid 21528] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21528] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21528] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21528] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21528] exit_group(0)               = ?
[pid 21528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20675", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20675", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20675/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20675/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20675/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20675")                        = 0
mkdir("./20676", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21529
./strace-static-x86_64: Process 21529 attached
[pid 21529] set_robust_list(0x5555589fe660, 24) = 0
[pid 21529] chdir("./20676")            = 0
[pid 21529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21529] setpgid(0, 0)               = 0
[pid 21529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21529] write(3, "1000", 4)         = 4
[pid 21529] close(3)                    = 0
[pid 21529] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21529] write(1, "executing program\n", 18executing program
) = 18
[pid 21529] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21529] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21529] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21529] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21529] exit_group(0)               = ?
[pid 21529] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21529, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20676", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20676", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20676/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20676/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20676/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20676")                        = 0
mkdir("./20677", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21530
./strace-static-x86_64: Process 21530 attached
[pid 21530] set_robust_list(0x5555589fe660, 24) = 0
[pid 21530] chdir("./20677")            = 0
[pid 21530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21530] setpgid(0, 0)               = 0
[pid 21530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21530] write(3, "1000", 4)         = 4
[pid 21530] close(3)                    = 0
[pid 21530] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21530] write(1, "executing program\n", 18executing program
) = 18
[pid 21530] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21530] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21530] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21530] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21530] exit_group(0)               = ?
[pid 21530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20677", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20677", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20677/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20677/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20677/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20677")                        = 0
mkdir("./20678", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21531
./strace-static-x86_64: Process 21531 attached
[pid 21531] set_robust_list(0x5555589fe660, 24) = 0
[pid 21531] chdir("./20678")            = 0
[pid 21531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21531] setpgid(0, 0)               = 0
[pid 21531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21531] write(3, "1000", 4)         = 4
[pid 21531] close(3)                    = 0
[pid 21531] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21531] write(1, "executing program\n", 18executing program
) = 18
[pid 21531] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21531] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21531] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21531] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21531] exit_group(0)               = ?
[pid 21531] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21531, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20678", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20678", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20678/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20678/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20678/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20678")                        = 0
mkdir("./20679", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21532
./strace-static-x86_64: Process 21532 attached
[pid 21532] set_robust_list(0x5555589fe660, 24) = 0
[pid 21532] chdir("./20679")            = 0
[pid 21532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21532] setpgid(0, 0)               = 0
[pid 21532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21532] write(3, "1000", 4)         = 4
[pid 21532] close(3)                    = 0
[pid 21532] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21532] write(1, "executing program\n", 18executing program
) = 18
[pid 21532] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21532] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21532] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21532] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21532] exit_group(0)               = ?
[pid 21532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20679", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20679", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20679/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20679/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20679/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20679")                        = 0
mkdir("./20680", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21533
./strace-static-x86_64: Process 21533 attached
[pid 21533] set_robust_list(0x5555589fe660, 24) = 0
[pid 21533] chdir("./20680")            = 0
[pid 21533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21533] setpgid(0, 0)               = 0
[pid 21533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21533] write(3, "1000", 4)         = 4
[pid 21533] close(3)                    = 0
[pid 21533] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21533] write(1, "executing program\n", 18) = 18
[pid 21533] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21533] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21533] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21533] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21533] exit_group(0)               = ?
[pid 21533] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21533, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20680", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20680", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20680/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20680/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20680/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20680")                        = 0
mkdir("./20681", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21534
./strace-static-x86_64: Process 21534 attached
[pid 21534] set_robust_list(0x5555589fe660, 24) = 0
[pid 21534] chdir("./20681")            = 0
[pid 21534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21534] setpgid(0, 0)               = 0
[pid 21534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21534] write(3, "1000", 4)         = 4
[pid 21534] close(3)                    = 0
[pid 21534] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21534] write(1, "executing program\n", 18executing program
) = 18
[pid 21534] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21534] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21534] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21534] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21534] exit_group(0)               = ?
[pid 21534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20681", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20681", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20681/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20681/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20681/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20681")                        = 0
mkdir("./20682", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21535
./strace-static-x86_64: Process 21535 attached
[pid 21535] set_robust_list(0x5555589fe660, 24) = 0
[pid 21535] chdir("./20682")            = 0
[pid 21535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21535] setpgid(0, 0)               = 0
[pid 21535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21535] write(3, "1000", 4)         = 4
[pid 21535] close(3)                    = 0
[pid 21535] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21535] write(1, "executing program\n", 18executing program
) = 18
[pid 21535] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21535] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21535] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21535] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21535] exit_group(0)               = ?
[pid 21535] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21535, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20682", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20682", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20682/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20682/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20682/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20682")                        = 0
mkdir("./20683", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21536
./strace-static-x86_64: Process 21536 attached
[pid 21536] set_robust_list(0x5555589fe660, 24) = 0
[pid 21536] chdir("./20683")            = 0
[pid 21536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21536] setpgid(0, 0)               = 0
[pid 21536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21536] write(3, "1000", 4)         = 4
[pid 21536] close(3)                    = 0
[pid 21536] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21536] write(1, "executing program\n", 18executing program
) = 18
[pid 21536] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21536] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21536] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21536] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21536] exit_group(0)               = ?
[pid 21536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20683", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20683", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20683/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20683/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20683/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20683")                        = 0
mkdir("./20684", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21537
./strace-static-x86_64: Process 21537 attached
[pid 21537] set_robust_list(0x5555589fe660, 24) = 0
[pid 21537] chdir("./20684")            = 0
[pid 21537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21537] setpgid(0, 0)               = 0
[pid 21537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21537] write(3, "1000", 4)         = 4
[pid 21537] close(3)                    = 0
[pid 21537] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21537] write(1, "executing program\n", 18executing program
) = 18
[pid 21537] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21537] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21537] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21537] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21537] exit_group(0)               = ?
[pid 21537] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21537, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20684", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20684", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20684/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20684/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20684/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20684")                        = 0
mkdir("./20685", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21538
./strace-static-x86_64: Process 21538 attached
[pid 21538] set_robust_list(0x5555589fe660, 24) = 0
[pid 21538] chdir("./20685")            = 0
[pid 21538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21538] setpgid(0, 0)               = 0
[pid 21538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21538] write(3, "1000", 4)         = 4
[pid 21538] close(3)                    = 0
[pid 21538] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21538] write(1, "executing program\n", 18executing program
) = 18
[pid 21538] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21538] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21538] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21538] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21538] exit_group(0)               = ?
[pid 21538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20685", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20685", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20685/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20685/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20685/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20685")                        = 0
mkdir("./20686", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21539
./strace-static-x86_64: Process 21539 attached
[pid 21539] set_robust_list(0x5555589fe660, 24) = 0
[pid 21539] chdir("./20686")            = 0
[pid 21539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21539] setpgid(0, 0)               = 0
[pid 21539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21539] write(3, "1000", 4)         = 4
[pid 21539] close(3)                    = 0
[pid 21539] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21539] write(1, "executing program\n", 18executing program
) = 18
[pid 21539] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21539] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21539] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21539] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21539] exit_group(0)               = ?
[pid 21539] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21539, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20686", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20686", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20686/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20686/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20686/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20686")                        = 0
mkdir("./20687", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21540
./strace-static-x86_64: Process 21540 attached
[pid 21540] set_robust_list(0x5555589fe660, 24) = 0
[pid 21540] chdir("./20687")            = 0
[pid 21540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21540] setpgid(0, 0)               = 0
[pid 21540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21540] write(3, "1000", 4)         = 4
[pid 21540] close(3)                    = 0
[pid 21540] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21540] write(1, "executing program\n", 18executing program
) = 18
[pid 21540] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21540] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21540] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21540] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21540] exit_group(0)               = ?
[pid 21540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20687", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20687", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20687/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20687/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20687/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20687")                        = 0
mkdir("./20688", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21541
./strace-static-x86_64: Process 21541 attached
[pid 21541] set_robust_list(0x5555589fe660, 24) = 0
[pid 21541] chdir("./20688")            = 0
[pid 21541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21541] setpgid(0, 0)               = 0
[pid 21541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21541] write(3, "1000", 4)         = 4
[pid 21541] close(3)                    = 0
[pid 21541] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21541] write(1, "executing program\n", 18) = 18
[pid 21541] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21541] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21541] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21541] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21541] exit_group(0)               = ?
[pid 21541] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21541, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20688", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20688", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20688/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20688/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20688/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20688")                        = 0
mkdir("./20689", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21542
./strace-static-x86_64: Process 21542 attached
[pid 21542] set_robust_list(0x5555589fe660, 24) = 0
[pid 21542] chdir("./20689")            = 0
[pid 21542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21542] setpgid(0, 0)               = 0
[pid 21542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21542] write(3, "1000", 4)         = 4
[pid 21542] close(3)                    = 0
[pid 21542] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21542] write(1, "executing program\n", 18) = 18
[pid 21542] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21542] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21542] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21542] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21542] exit_group(0)               = ?
[pid 21542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20689", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20689", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20689/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20689/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20689/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20689")                        = 0
mkdir("./20690", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21543
./strace-static-x86_64: Process 21543 attached
[pid 21543] set_robust_list(0x5555589fe660, 24) = 0
[pid 21543] chdir("./20690")            = 0
[pid 21543] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21543] setpgid(0, 0)               = 0
[pid 21543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21543] write(3, "1000", 4)         = 4
[pid 21543] close(3)                    = 0
[pid 21543] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21543] write(1, "executing program\n", 18) = 18
[pid 21543] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21543] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21543] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21543] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21543] exit_group(0)               = ?
[pid 21543] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21543, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20690", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20690", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20690/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20690/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20690/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20690")                        = 0
mkdir("./20691", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21544 attached
 <unfinished ...>
[pid 21544] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21544
[pid 21544] chdir("./20691")            = 0
[pid 21544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21544] setpgid(0, 0)               = 0
[pid 21544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21544] write(3, "1000", 4)         = 4
[pid 21544] close(3)                    = 0
[pid 21544] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21544] write(1, "executing program\n", 18) = 18
[pid 21544] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21544] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21544] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21544] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21544] exit_group(0)               = ?
[pid 21544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20691", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20691", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20691/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20691/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20691/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20691")                        = 0
mkdir("./20692", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21545
./strace-static-x86_64: Process 21545 attached
[pid 21545] set_robust_list(0x5555589fe660, 24) = 0
[pid 21545] chdir("./20692")            = 0
[pid 21545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21545] setpgid(0, 0)               = 0
[pid 21545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21545] write(3, "1000", 4)         = 4
[pid 21545] close(3)                    = 0
[pid 21545] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21545] write(1, "executing program\n", 18executing program
) = 18
[pid 21545] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21545] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21545] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21545] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21545] exit_group(0)               = ?
[pid 21545] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21545, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20692", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20692", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20692/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20692/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20692/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20692")                        = 0
mkdir("./20693", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21546
./strace-static-x86_64: Process 21546 attached
[pid 21546] set_robust_list(0x5555589fe660, 24) = 0
[pid 21546] chdir("./20693")            = 0
[pid 21546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21546] setpgid(0, 0)               = 0
[pid 21546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21546] write(3, "1000", 4)         = 4
[pid 21546] close(3)                    = 0
[pid 21546] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21546] write(1, "executing program\n", 18executing program
) = 18
[pid 21546] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21546] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21546] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21546] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21546] exit_group(0)               = ?
[pid 21546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20693", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20693", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20693/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20693/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20693/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20693")                        = 0
mkdir("./20694", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21547
./strace-static-x86_64: Process 21547 attached
[pid 21547] set_robust_list(0x5555589fe660, 24) = 0
[pid 21547] chdir("./20694")            = 0
[pid 21547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21547] setpgid(0, 0)               = 0
[pid 21547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21547] write(3, "1000", 4)         = 4
[pid 21547] close(3)                    = 0
[pid 21547] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21547] write(1, "executing program\n", 18executing program
) = 18
[pid 21547] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21547] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21547] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21547] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21547] exit_group(0)               = ?
[pid 21547] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21547, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20694", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20694", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20694/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20694/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20694/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20694")                        = 0
mkdir("./20695", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21548
./strace-static-x86_64: Process 21548 attached
[pid 21548] set_robust_list(0x5555589fe660, 24) = 0
[pid 21548] chdir("./20695")            = 0
[pid 21548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21548] setpgid(0, 0)               = 0
[pid 21548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21548] write(3, "1000", 4)         = 4
[pid 21548] close(3)                    = 0
[pid 21548] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21548] write(1, "executing program\n", 18) = 18
[pid 21548] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21548] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21548] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21548] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21548] exit_group(0)               = ?
[pid 21548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20695", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20695", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20695/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20695/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20695/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20695")                        = 0
mkdir("./20696", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21549 attached
, child_tidptr=0x5555589fe650) = 21549
[pid 21549] set_robust_list(0x5555589fe660, 24) = 0
[pid 21549] chdir("./20696")            = 0
[pid 21549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21549] setpgid(0, 0)               = 0
[pid 21549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21549] write(3, "1000", 4)         = 4
[pid 21549] close(3)                    = 0
[pid 21549] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21549] write(1, "executing program\n", 18executing program
) = 18
[pid 21549] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21549] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21549] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21549] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21549] exit_group(0)               = ?
[pid 21549] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21549, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20696", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20696", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20696/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20696/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20696/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20696")                        = 0
mkdir("./20697", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21550
./strace-static-x86_64: Process 21550 attached
[pid 21550] set_robust_list(0x5555589fe660, 24) = 0
[pid 21550] chdir("./20697")            = 0
[pid 21550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21550] setpgid(0, 0)               = 0
[pid 21550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21550] write(3, "1000", 4)         = 4
[pid 21550] close(3)                    = 0
[pid 21550] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21550] write(1, "executing program\n", 18executing program
) = 18
[pid 21550] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21550] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21550] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21550] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21550] exit_group(0)               = ?
[pid 21550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20697", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20697", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20697/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20697/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20697/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20697")                        = 0
mkdir("./20698", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21551
./strace-static-x86_64: Process 21551 attached
[pid 21551] set_robust_list(0x5555589fe660, 24) = 0
[pid 21551] chdir("./20698")            = 0
[pid 21551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21551] setpgid(0, 0)               = 0
[pid 21551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21551] write(3, "1000", 4)         = 4
[pid 21551] close(3)                    = 0
[pid 21551] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21551] write(1, "executing program\n", 18executing program
) = 18
[pid 21551] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21551] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21551] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21551] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21551] exit_group(0)               = ?
[pid 21551] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21551, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20698", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20698", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20698/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20698/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20698/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20698")                        = 0
mkdir("./20699", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21553
./strace-static-x86_64: Process 21553 attached
[pid 21553] set_robust_list(0x5555589fe660, 24) = 0
[pid 21553] chdir("./20699")            = 0
[pid 21553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21553] setpgid(0, 0)               = 0
[pid 21553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21553] write(3, "1000", 4)         = 4
[pid 21553] close(3)                    = 0
[pid 21553] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21553] write(1, "executing program\n", 18executing program
) = 18
[pid 21553] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21553] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21553] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21553] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21553] exit_group(0)               = ?
[pid 21553] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21553, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20699", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20699", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20699/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20699/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20699/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20699")                        = 0
mkdir("./20700", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21554
./strace-static-x86_64: Process 21554 attached
[pid 21554] set_robust_list(0x5555589fe660, 24) = 0
[pid 21554] chdir("./20700")            = 0
[pid 21554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21554] setpgid(0, 0)               = 0
[pid 21554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21554] write(3, "1000", 4)         = 4
[pid 21554] close(3)                    = 0
[pid 21554] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21554] write(1, "executing program\n", 18) = 18
[pid 21554] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21554] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21554] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21554] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21554] exit_group(0)               = ?
[pid 21554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20700", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20700", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20700/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20700/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20700/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20700")                        = 0
mkdir("./20701", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21555 attached
, child_tidptr=0x5555589fe650) = 21555
[pid 21555] set_robust_list(0x5555589fe660, 24) = 0
[pid 21555] chdir("./20701")            = 0
[pid 21555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21555] setpgid(0, 0)               = 0
[pid 21555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21555] write(3, "1000", 4)         = 4
[pid 21555] close(3)                    = 0
[pid 21555] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21555] write(1, "executing program\n", 18executing program
) = 18
[pid 21555] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21555] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21555] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21555] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21555] exit_group(0)               = ?
[pid 21555] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21555, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20701", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20701", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20701/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20701/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20701/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20701")                        = 0
mkdir("./20702", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21556 attached
 <unfinished ...>
[pid 21556] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21556
[pid 21556] chdir("./20702")            = 0
[pid 21556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21556] setpgid(0, 0)               = 0
[pid 21556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21556] write(3, "1000", 4)         = 4
[pid 21556] close(3)                    = 0
[pid 21556] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21556] write(1, "executing program\n", 18executing program
) = 18
[pid 21556] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21556] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21556] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21556] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21556] exit_group(0)               = ?
[pid 21556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20702", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20702", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20702/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20702/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20702/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20702")                        = 0
mkdir("./20703", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21557
./strace-static-x86_64: Process 21557 attached
[pid 21557] set_robust_list(0x5555589fe660, 24) = 0
[pid 21557] chdir("./20703")            = 0
[pid 21557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21557] setpgid(0, 0)               = 0
[pid 21557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21557] write(3, "1000", 4)         = 4
[pid 21557] close(3)                    = 0
[pid 21557] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21557] write(1, "executing program\n", 18executing program
) = 18
[pid 21557] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21557] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21557] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21557] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21557] exit_group(0)               = ?
[pid 21557] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21557, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20703", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20703", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20703/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20703/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20703/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20703")                        = 0
mkdir("./20704", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21558 attached
 <unfinished ...>
[pid 21558] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21558
[pid 21558] chdir("./20704")            = 0
[pid 21558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21558] setpgid(0, 0)               = 0
[pid 21558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21558] write(3, "1000", 4)         = 4
[pid 21558] close(3)                    = 0
[pid 21558] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21558] write(1, "executing program\n", 18executing program
) = 18
[pid 21558] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21558] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21558] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21558] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21558] exit_group(0)               = ?
[pid 21558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20704", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20704", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20704/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20704/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20704/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20704")                        = 0
mkdir("./20705", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21559 attached
, child_tidptr=0x5555589fe650) = 21559
[pid 21559] set_robust_list(0x5555589fe660, 24) = 0
[pid 21559] chdir("./20705")            = 0
[pid 21559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21559] setpgid(0, 0)               = 0
[pid 21559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21559] write(3, "1000", 4)         = 4
[pid 21559] close(3)                    = 0
[pid 21559] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21559] write(1, "executing program\n", 18) = 18
[pid 21559] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21559] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21559] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21559] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21559] exit_group(0)               = ?
[pid 21559] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21559, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20705", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20705", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20705/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20705/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20705/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20705")                        = 0
mkdir("./20706", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21560 attached
 <unfinished ...>
[pid 21560] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21560
[pid 21560] chdir("./20706")            = 0
[pid 21560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21560] setpgid(0, 0)               = 0
[pid 21560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21560] write(3, "1000", 4)         = 4
[pid 21560] close(3)                    = 0
[pid 21560] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21560] write(1, "executing program\n", 18) = 18
[pid 21560] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21560] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21560] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21560] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21560] exit_group(0)               = ?
[pid 21560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20706", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20706", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20706/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20706/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20706/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20706")                        = 0
mkdir("./20707", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21561
./strace-static-x86_64: Process 21561 attached
[pid 21561] set_robust_list(0x5555589fe660, 24) = 0
[pid 21561] chdir("./20707")            = 0
[pid 21561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21561] setpgid(0, 0)               = 0
[pid 21561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21561] write(3, "1000", 4)         = 4
[pid 21561] close(3)                    = 0
[pid 21561] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21561] write(1, "executing program\n", 18executing program
) = 18
[pid 21561] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21561] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21561] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21561] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21561] exit_group(0)               = ?
[pid 21561] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21561, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20707", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20707", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20707/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20707/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20707/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20707")                        = 0
mkdir("./20708", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21562
./strace-static-x86_64: Process 21562 attached
[pid 21562] set_robust_list(0x5555589fe660, 24) = 0
[pid 21562] chdir("./20708")            = 0
[pid 21562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21562] setpgid(0, 0)               = 0
[pid 21562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21562] write(3, "1000", 4)         = 4
[pid 21562] close(3)                    = 0
[pid 21562] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21562] write(1, "executing program\n", 18executing program
) = 18
[pid 21562] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21562] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21562] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21562] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21562] exit_group(0)               = ?
[pid 21562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20708", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20708", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20708/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20708/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20708/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20708")                        = 0
mkdir("./20709", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21563
./strace-static-x86_64: Process 21563 attached
[pid 21563] set_robust_list(0x5555589fe660, 24) = 0
[pid 21563] chdir("./20709")            = 0
[pid 21563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21563] setpgid(0, 0)               = 0
[pid 21563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21563] write(3, "1000", 4)         = 4
[pid 21563] close(3)                    = 0
[pid 21563] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21563] write(1, "executing program\n", 18executing program
) = 18
[pid 21563] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21563] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21563] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21563] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21563] exit_group(0)               = ?
[pid 21563] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21563, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20709", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20709", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20709/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20709/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20709/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20709")                        = 0
mkdir("./20710", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21564
./strace-static-x86_64: Process 21564 attached
[pid 21564] set_robust_list(0x5555589fe660, 24) = 0
[pid 21564] chdir("./20710")            = 0
[pid 21564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21564] setpgid(0, 0)               = 0
[pid 21564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21564] write(3, "1000", 4)         = 4
[pid 21564] close(3)                    = 0
[pid 21564] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21564] write(1, "executing program\n", 18executing program
) = 18
[pid 21564] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21564] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21564] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21564] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21564] exit_group(0)               = ?
[pid 21564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20710", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20710", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20710/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20710/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20710/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20710")                        = 0
mkdir("./20711", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21565
./strace-static-x86_64: Process 21565 attached
[pid 21565] set_robust_list(0x5555589fe660, 24) = 0
[pid 21565] chdir("./20711")            = 0
[pid 21565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21565] setpgid(0, 0)               = 0
[pid 21565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21565] write(3, "1000", 4)         = 4
[pid 21565] close(3)                    = 0
[pid 21565] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21565] write(1, "executing program\n", 18executing program
) = 18
[pid 21565] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21565] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21565] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21565] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21565] exit_group(0)               = ?
[pid 21565] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21565, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20711", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20711", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20711/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20711/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20711/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20711")                        = 0
mkdir("./20712", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21566
./strace-static-x86_64: Process 21566 attached
[pid 21566] set_robust_list(0x5555589fe660, 24) = 0
[pid 21566] chdir("./20712")            = 0
[pid 21566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21566] setpgid(0, 0)               = 0
[pid 21566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21566] write(3, "1000", 4)         = 4
[pid 21566] close(3)                    = 0
[pid 21566] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21566] write(1, "executing program\n", 18executing program
) = 18
[pid 21566] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21566] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21566] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21566] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21566] exit_group(0)               = ?
[pid 21566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20712", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20712", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20712/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20712/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20712/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20712")                        = 0
mkdir("./20713", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21567
./strace-static-x86_64: Process 21567 attached
[pid 21567] set_robust_list(0x5555589fe660, 24) = 0
[pid 21567] chdir("./20713")            = 0
[pid 21567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21567] setpgid(0, 0)               = 0
[pid 21567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21567] write(3, "1000", 4)         = 4
[pid 21567] close(3executing program
)                    = 0
[pid 21567] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21567] write(1, "executing program\n", 18) = 18
[pid 21567] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21567] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21567] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21567] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21567] exit_group(0)               = ?
[pid 21567] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21567, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20713", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20713", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20713/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20713/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20713/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20713")                        = 0
mkdir("./20714", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21568
./strace-static-x86_64: Process 21568 attached
[pid 21568] set_robust_list(0x5555589fe660, 24) = 0
[pid 21568] chdir("./20714")            = 0
[pid 21568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21568] setpgid(0, 0)               = 0
[pid 21568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21568] write(3, "1000", 4)         = 4
[pid 21568] close(3)                    = 0
[pid 21568] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21568] write(1, "executing program\n", 18) = 18
[pid 21568] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21568] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21568] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21568] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21568] exit_group(0)               = ?
[pid 21568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20714", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20714", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20714/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20714/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20714/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20714")                        = 0
mkdir("./20715", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21569
./strace-static-x86_64: Process 21569 attached
[pid 21569] set_robust_list(0x5555589fe660, 24) = 0
[pid 21569] chdir("./20715")            = 0
[pid 21569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21569] setpgid(0, 0)               = 0
[pid 21569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21569] write(3, "1000", 4)         = 4
[pid 21569] close(3)                    = 0
[pid 21569] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21569] write(1, "executing program\n", 18) = 18
[pid 21569] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21569] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21569] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21569] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21569] exit_group(0)               = ?
[pid 21569] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21569, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20715", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20715", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20715/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20715/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20715/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20715")                        = 0
mkdir("./20716", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21570
./strace-static-x86_64: Process 21570 attached
[pid 21570] set_robust_list(0x5555589fe660, 24) = 0
[pid 21570] chdir("./20716")            = 0
[pid 21570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21570] setpgid(0, 0)               = 0
[pid 21570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21570] write(3, "1000", 4)         = 4
[pid 21570] close(3)                    = 0
[pid 21570] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21570] write(1, "executing program\n", 18executing program
) = 18
[pid 21570] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21570] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21570] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21570] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21570] exit_group(0)               = ?
[pid 21570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20716", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20716", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20716/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20716/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20716/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20716")                        = 0
mkdir("./20717", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21571
./strace-static-x86_64: Process 21571 attached
[pid 21571] set_robust_list(0x5555589fe660, 24) = 0
[pid 21571] chdir("./20717")            = 0
[pid 21571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21571] setpgid(0, 0)               = 0
[pid 21571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21571] write(3, "1000", 4)         = 4
[pid 21571] close(3)                    = 0
[pid 21571] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21571] write(1, "executing program\n", 18executing program
) = 18
[pid 21571] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21571] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21571] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21571] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21571] exit_group(0)               = ?
[pid 21571] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21571, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20717", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20717", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20717/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20717/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20717/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20717")                        = 0
mkdir("./20718", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21572
./strace-static-x86_64: Process 21572 attached
[pid 21572] set_robust_list(0x5555589fe660, 24) = 0
[pid 21572] chdir("./20718")            = 0
[pid 21572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21572] setpgid(0, 0)               = 0
[pid 21572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21572] write(3, "1000", 4)         = 4
[pid 21572] close(3)                    = 0
[pid 21572] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21572] write(1, "executing program\n", 18executing program
) = 18
[pid 21572] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21572] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21572] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21572] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21572] exit_group(0)               = ?
[pid 21572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20718", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20718", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20718/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20718/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20718/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20718")                        = 0
mkdir("./20719", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21573
./strace-static-x86_64: Process 21573 attached
[pid 21573] set_robust_list(0x5555589fe660, 24) = 0
[pid 21573] chdir("./20719")            = 0
[pid 21573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21573] setpgid(0, 0)               = 0
[pid 21573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21573] write(3, "1000", 4)         = 4
[pid 21573] close(3)                    = 0
[pid 21573] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21573] write(1, "executing program\n", 18executing program
) = 18
[pid 21573] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21573] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21573] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21573] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21573] exit_group(0)               = ?
[pid 21573] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21573, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20719", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20719", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20719/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20719/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20719/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20719")                        = 0
mkdir("./20720", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21574
./strace-static-x86_64: Process 21574 attached
[pid 21574] set_robust_list(0x5555589fe660, 24) = 0
[pid 21574] chdir("./20720")            = 0
[pid 21574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21574] setpgid(0, 0)               = 0
[pid 21574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21574] write(3, "1000", 4)         = 4
[pid 21574] close(3)                    = 0
[pid 21574] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21574] write(1, "executing program\n", 18executing program
) = 18
[pid 21574] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21574] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21574] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21574] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21574] exit_group(0)               = ?
[pid 21574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20720", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20720", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20720/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20720/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20720/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20720")                        = 0
mkdir("./20721", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21575
./strace-static-x86_64: Process 21575 attached
[pid 21575] set_robust_list(0x5555589fe660, 24) = 0
[pid 21575] chdir("./20721")            = 0
[pid 21575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21575] setpgid(0, 0)               = 0
[pid 21575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21575] write(3, "1000", 4)         = 4
[pid 21575] close(3)                    = 0
[pid 21575] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21575] write(1, "executing program\n", 18executing program
) = 18
[pid 21575] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21575] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21575] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21575] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21575] exit_group(0)               = ?
[pid 21575] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21575, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20721", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20721", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20721/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20721/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20721/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20721")                        = 0
mkdir("./20722", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21576
./strace-static-x86_64: Process 21576 attached
[pid 21576] set_robust_list(0x5555589fe660, 24) = 0
[pid 21576] chdir("./20722")            = 0
[pid 21576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21576] setpgid(0, 0)               = 0
[pid 21576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21576] write(3, "1000", 4)         = 4
[pid 21576] close(3)                    = 0
[pid 21576] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21576] write(1, "executing program\n", 18executing program
) = 18
[pid 21576] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21576] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21576] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21576] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21576] exit_group(0)               = ?
[pid 21576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20722", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20722", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20722/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20722/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20722/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20722")                        = 0
mkdir("./20723", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21577
./strace-static-x86_64: Process 21577 attached
[pid 21577] set_robust_list(0x5555589fe660, 24) = 0
[pid 21577] chdir("./20723")            = 0
[pid 21577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21577] setpgid(0, 0)               = 0
[pid 21577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21577] write(3, "1000", 4)         = 4
[pid 21577] close(3)                    = 0
[pid 21577] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21577] write(1, "executing program\n", 18executing program
) = 18
[pid 21577] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21577] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21577] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21577] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21577] exit_group(0)               = ?
[pid 21577] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21577, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20723", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20723", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20723/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20723/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20723/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20723")                        = 0
mkdir("./20724", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21578 attached
 <unfinished ...>
[pid 21578] set_robust_list(0x5555589fe660, 24) = 0
[pid 21578] chdir("./20724" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21578
[pid 21578] <... chdir resumed>)        = 0
[pid 21578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21578] setpgid(0, 0)               = 0
[pid 21578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21578] write(3, "1000", 4)         = 4
[pid 21578] close(3)                    = 0
[pid 21578] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21578] write(1, "executing program\n", 18) = 18
[pid 21578] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21578] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21578] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21578] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21578] exit_group(0)               = ?
[pid 21578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20724", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20724", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20724/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20724/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20724/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20724")                        = 0
mkdir("./20725", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21579
./strace-static-x86_64: Process 21579 attached
[pid 21579] set_robust_list(0x5555589fe660, 24) = 0
[pid 21579] chdir("./20725")            = 0
[pid 21579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21579] setpgid(0, 0)               = 0
[pid 21579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21579] write(3, "1000", 4)         = 4
[pid 21579] close(3)                    = 0
[pid 21579] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21579] write(1, "executing program\n", 18executing program
) = 18
[pid 21579] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21579] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21579] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21579] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21579] exit_group(0)               = ?
[pid 21579] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21579, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20725", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20725", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20725/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20725/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20725/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20725")                        = 0
mkdir("./20726", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21580
./strace-static-x86_64: Process 21580 attached
[pid 21580] set_robust_list(0x5555589fe660, 24) = 0
[pid 21580] chdir("./20726")            = 0
[pid 21580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21580] setpgid(0, 0)               = 0
[pid 21580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21580] write(3, "1000", 4)         = 4
[pid 21580] close(3)                    = 0
[pid 21580] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21580] write(1, "executing program\n", 18executing program
) = 18
[pid 21580] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21580] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21580] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21580] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21580] exit_group(0)               = ?
[pid 21580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20726", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20726", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20726/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20726/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20726/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20726")                        = 0
mkdir("./20727", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21581
./strace-static-x86_64: Process 21581 attached
[pid 21581] set_robust_list(0x5555589fe660, 24) = 0
[pid 21581] chdir("./20727")            = 0
[pid 21581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21581] setpgid(0, 0)               = 0
[pid 21581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21581] write(3, "1000", 4)         = 4
[pid 21581] close(3)                    = 0
[pid 21581] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21581] write(1, "executing program\n", 18executing program
) = 18
[pid 21581] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21581] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21581] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21581] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21581] exit_group(0)               = ?
[pid 21581] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21581, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20727", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20727", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20727/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20727/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20727/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20727")                        = 0
mkdir("./20728", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21582
./strace-static-x86_64: Process 21582 attached
[pid 21582] set_robust_list(0x5555589fe660, 24) = 0
[pid 21582] chdir("./20728")            = 0
[pid 21582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21582] setpgid(0, 0)               = 0
[pid 21582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21582] write(3, "1000", 4)         = 4
[pid 21582] close(3)                    = 0
[pid 21582] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21582] write(1, "executing program\n", 18executing program
) = 18
[pid 21582] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21582] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21582] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21582] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21582] exit_group(0)               = ?
[pid 21582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20728", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20728", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20728/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20728/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20728/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20728")                        = 0
mkdir("./20729", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21583
./strace-static-x86_64: Process 21583 attached
[pid 21583] set_robust_list(0x5555589fe660, 24) = 0
[pid 21583] chdir("./20729")            = 0
[pid 21583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21583] setpgid(0, 0)               = 0
[pid 21583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21583] write(3, "1000", 4)         = 4
[pid 21583] close(3)                    = 0
[pid 21583] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21583] write(1, "executing program\n", 18executing program
) = 18
[pid 21583] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21583] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21583] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21583] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21583] exit_group(0)               = ?
[pid 21583] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21583, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20729", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20729", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20729/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20729/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20729/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20729")                        = 0
mkdir("./20730", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21584 attached
 <unfinished ...>
[pid 21584] set_robust_list(0x5555589fe660, 24) = 0
[pid 21584] chdir("./20730")            = 0
[pid 21584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21584] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21584
[pid 21584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21584] write(3, "1000", 4)         = 4
[pid 21584] close(3)                    = 0
[pid 21584] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21584] write(1, "executing program\n", 18executing program
) = 18
[pid 21584] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21584] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21584] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21584] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21584] exit_group(0)               = ?
[pid 21584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20730", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20730", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20730/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20730/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20730/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20730")                        = 0
mkdir("./20731", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21585
./strace-static-x86_64: Process 21585 attached
[pid 21585] set_robust_list(0x5555589fe660, 24) = 0
[pid 21585] chdir("./20731")            = 0
[pid 21585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21585] setpgid(0, 0)               = 0
[pid 21585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21585] write(3, "1000", 4)         = 4
[pid 21585] close(3)                    = 0
[pid 21585] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21585] write(1, "executing program\n", 18executing program
) = 18
[pid 21585] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21585] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21585] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21585] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21585] exit_group(0)               = ?
[pid 21585] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21585, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20731", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20731", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20731/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20731/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20731/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20731")                        = 0
mkdir("./20732", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21586 attached
 <unfinished ...>
[pid 21586] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21586
[pid 21586] chdir("./20732")            = 0
[pid 21586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21586] setpgid(0, 0)               = 0
[pid 21586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21586] write(3, "1000", 4)         = 4
[pid 21586] close(3)                    = 0
[pid 21586] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21586] write(1, "executing program\n", 18executing program
) = 18
[pid 21586] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21586] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21586] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21586] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21586] exit_group(0)               = ?
[pid 21586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20732", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20732", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20732/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20732/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20732/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20732")                        = 0
mkdir("./20733", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21587 attached
 <unfinished ...>
[pid 21587] set_robust_list(0x5555589fe660, 24) = 0
[pid 21587] chdir("./20733" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21587
[pid 21587] <... chdir resumed>)        = 0
[pid 21587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21587] setpgid(0, 0)               = 0
[pid 21587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21587] write(3, "1000", 4)         = 4
[pid 21587] close(3)                    = 0
[pid 21587] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21587] write(1, "executing program\n", 18executing program
) = 18
[pid 21587] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21587] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21587] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21587] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21587] exit_group(0)               = ?
[pid 21587] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21587, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20733", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20733", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20733/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20733/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20733/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20733")                        = 0
mkdir("./20734", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21588
./strace-static-x86_64: Process 21588 attached
[pid 21588] set_robust_list(0x5555589fe660, 24) = 0
[pid 21588] chdir("./20734")            = 0
[pid 21588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21588] setpgid(0, 0)               = 0
[pid 21588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21588] write(3, "1000", 4)         = 4
[pid 21588] close(3)                    = 0
[pid 21588] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21588] write(1, "executing program\n", 18executing program
) = 18
[pid 21588] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21588] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21588] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21588] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21588] exit_group(0)               = ?
[pid 21588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20734", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20734", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20734/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20734/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20734/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20734")                        = 0
mkdir("./20735", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21589
./strace-static-x86_64: Process 21589 attached
[pid 21589] set_robust_list(0x5555589fe660, 24) = 0
[pid 21589] chdir("./20735")            = 0
[pid 21589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21589] setpgid(0, 0)               = 0
[pid 21589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21589] write(3, "1000", 4)         = 4
[pid 21589] close(3)                    = 0
[pid 21589] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21589] write(1, "executing program\n", 18executing program
) = 18
[pid 21589] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21589] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21589] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21589] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21589] exit_group(0)               = ?
[pid 21589] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21589, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20735", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20735", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20735/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20735/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20735/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20735")                        = 0
mkdir("./20736", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21590
./strace-static-x86_64: Process 21590 attached
[pid 21590] set_robust_list(0x5555589fe660, 24) = 0
[pid 21590] chdir("./20736")            = 0
[pid 21590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21590] setpgid(0, 0)               = 0
[pid 21590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21590] write(3, "1000", 4)         = 4
[pid 21590] close(3)                    = 0
[pid 21590] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21590] write(1, "executing program\n", 18executing program
) = 18
[pid 21590] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21590] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21590] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21590] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21590] exit_group(0)               = ?
[pid 21590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20736", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20736", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20736/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20736/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20736/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20736")                        = 0
mkdir("./20737", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21591
./strace-static-x86_64: Process 21591 attached
[pid 21591] set_robust_list(0x5555589fe660, 24) = 0
[pid 21591] chdir("./20737")            = 0
[pid 21591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21591] setpgid(0, 0)               = 0
[pid 21591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21591] write(3, "1000", 4)         = 4
[pid 21591] close(3)                    = 0
[pid 21591] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21591] write(1, "executing program\n", 18executing program
) = 18
[pid 21591] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21591] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21591] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21591] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21591] exit_group(0)               = ?
[pid 21591] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21591, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20737", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20737", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20737/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20737/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20737/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20737")                        = 0
mkdir("./20738", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21592
./strace-static-x86_64: Process 21592 attached
[pid 21592] set_robust_list(0x5555589fe660, 24) = 0
[pid 21592] chdir("./20738")            = 0
[pid 21592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21592] setpgid(0, 0)               = 0
[pid 21592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21592] write(3, "1000", 4)         = 4
[pid 21592] close(3)                    = 0
[pid 21592] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21592] write(1, "executing program\n", 18executing program
) = 18
[pid 21592] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21592] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21592] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21592] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21592] exit_group(0)               = ?
[pid 21592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20738", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20738", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20738/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20738/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20738/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20738")                        = 0
mkdir("./20739", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21593
./strace-static-x86_64: Process 21593 attached
[pid 21593] set_robust_list(0x5555589fe660, 24) = 0
[pid 21593] chdir("./20739")            = 0
[pid 21593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21593] setpgid(0, 0)               = 0
[pid 21593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21593] write(3, "1000", 4)         = 4
[pid 21593] close(3)                    = 0
[pid 21593] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21593] write(1, "executing program\n", 18executing program
) = 18
[pid 21593] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21593] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21593] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21593] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21593] exit_group(0)               = ?
[pid 21593] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21593, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20739", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20739", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20739/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20739/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20739/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20739")                        = 0
mkdir("./20740", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21594
./strace-static-x86_64: Process 21594 attached
[pid 21594] set_robust_list(0x5555589fe660, 24) = 0
[pid 21594] chdir("./20740")            = 0
[pid 21594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21594] setpgid(0, 0)               = 0
[pid 21594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21594] write(3, "1000", 4)         = 4
[pid 21594] close(3)                    = 0
[pid 21594] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21594] write(1, "executing program\n", 18executing program
) = 18
[pid 21594] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21594] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21594] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21594] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21594] exit_group(0)               = ?
[pid 21594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20740", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20740", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20740/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20740/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20740/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20740")                        = 0
mkdir("./20741", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21595
./strace-static-x86_64: Process 21595 attached
[pid 21595] set_robust_list(0x5555589fe660, 24) = 0
[pid 21595] chdir("./20741")            = 0
[pid 21595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21595] setpgid(0, 0)               = 0
[pid 21595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21595] write(3, "1000", 4)         = 4
[pid 21595] close(3)                    = 0
[pid 21595] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21595] write(1, "executing program\n", 18executing program
) = 18
[pid 21595] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21595] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21595] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21595] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21595] exit_group(0)               = ?
[pid 21595] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21595, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20741", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20741", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20741/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20741/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20741/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20741")                        = 0
mkdir("./20742", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21596
./strace-static-x86_64: Process 21596 attached
[pid 21596] set_robust_list(0x5555589fe660, 24) = 0
[pid 21596] chdir("./20742")            = 0
[pid 21596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21596] setpgid(0, 0)               = 0
[pid 21596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21596] write(3, "1000", 4)         = 4
[pid 21596] close(3)                    = 0
[pid 21596] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21596] write(1, "executing program\n", 18executing program
) = 18
[pid 21596] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21596] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21596] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21596] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21596] exit_group(0)               = ?
[pid 21596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20742", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20742", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20742/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20742/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20742/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20742")                        = 0
mkdir("./20743", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21597
./strace-static-x86_64: Process 21597 attached
[pid 21597] set_robust_list(0x5555589fe660, 24) = 0
[pid 21597] chdir("./20743")            = 0
[pid 21597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21597] setpgid(0, 0)               = 0
[pid 21597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21597] write(3, "1000", 4)         = 4
[pid 21597] close(3)                    = 0
[pid 21597] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21597] write(1, "executing program\n", 18executing program
) = 18
[pid 21597] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21597] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21597] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21597] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21597] exit_group(0)               = ?
[pid 21597] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21597, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20743", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20743", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20743/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20743/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20743/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20743")                        = 0
mkdir("./20744", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21598
./strace-static-x86_64: Process 21598 attached
[pid 21598] set_robust_list(0x5555589fe660, 24) = 0
[pid 21598] chdir("./20744")            = 0
[pid 21598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21598] setpgid(0, 0)               = 0
[pid 21598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21598] write(3, "1000", 4)         = 4
[pid 21598] close(3)                    = 0
[pid 21598] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21598] write(1, "executing program\n", 18executing program
) = 18
[pid 21598] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21598] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21598] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21598] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21598] exit_group(0)               = ?
[pid 21598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20744", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20744", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20744/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20744/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20744/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20744")                        = 0
mkdir("./20745", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21599
./strace-static-x86_64: Process 21599 attached
[pid 21599] set_robust_list(0x5555589fe660, 24) = 0
[pid 21599] chdir("./20745")            = 0
[pid 21599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21599] setpgid(0, 0)               = 0
[pid 21599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21599] write(3, "1000", 4)         = 4
[pid 21599] close(3)                    = 0
[pid 21599] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21599] write(1, "executing program\n", 18executing program
) = 18
[pid 21599] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21599] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21599] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21599] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21599] exit_group(0)               = ?
[pid 21599] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21599, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20745", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20745", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20745/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20745/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20745/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20745")                        = 0
mkdir("./20746", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21600
./strace-static-x86_64: Process 21600 attached
[pid 21600] set_robust_list(0x5555589fe660, 24) = 0
[pid 21600] chdir("./20746")            = 0
[pid 21600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21600] setpgid(0, 0)               = 0
[pid 21600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21600] write(3, "1000", 4)         = 4
[pid 21600] close(3)                    = 0
[pid 21600] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21600] write(1, "executing program\n", 18executing program
) = 18
[pid 21600] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21600] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21600] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21600] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21600] exit_group(0)               = ?
[pid 21600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20746", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20746", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20746/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20746/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20746/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20746")                        = 0
mkdir("./20747", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21601
./strace-static-x86_64: Process 21601 attached
[pid 21601] set_robust_list(0x5555589fe660, 24) = 0
[pid 21601] chdir("./20747")            = 0
[pid 21601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21601] setpgid(0, 0)               = 0
[pid 21601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21601] write(3, "1000", 4)         = 4
[pid 21601] close(3)                    = 0
[pid 21601] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21601] write(1, "executing program\n", 18executing program
) = 18
[pid 21601] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21601] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21601] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21601] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21601] exit_group(0)               = ?
[pid 21601] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21601, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20747", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20747", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20747/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20747/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20747/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20747")                        = 0
mkdir("./20748", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21602 attached
, child_tidptr=0x5555589fe650) = 21602
[pid 21602] set_robust_list(0x5555589fe660, 24) = 0
[pid 21602] chdir("./20748")            = 0
[pid 21602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21602] setpgid(0, 0)               = 0
[pid 21602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21602] write(3, "1000", 4)         = 4
[pid 21602] close(3)                    = 0
[pid 21602] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21602] write(1, "executing program\n", 18executing program
) = 18
[pid 21602] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21602] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21602] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21602] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21602] exit_group(0)               = ?
[pid 21602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20748", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20748", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20748/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20748/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20748/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20748")                        = 0
mkdir("./20749", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21603
./strace-static-x86_64: Process 21603 attached
[pid 21603] set_robust_list(0x5555589fe660, 24) = 0
[pid 21603] chdir("./20749")            = 0
[pid 21603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21603] setpgid(0, 0)               = 0
[pid 21603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21603] write(3, "1000", 4)         = 4
[pid 21603] close(3)                    = 0
[pid 21603] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21603] write(1, "executing program\n", 18executing program
) = 18
[pid 21603] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21603] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21603] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21603] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21603] exit_group(0)               = ?
[pid 21603] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21603, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20749", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20749", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20749/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20749/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20749/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20749")                        = 0
mkdir("./20750", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21604
./strace-static-x86_64: Process 21604 attached
[pid 21604] set_robust_list(0x5555589fe660, 24) = 0
[pid 21604] chdir("./20750")            = 0
[pid 21604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21604] setpgid(0, 0)               = 0
[pid 21604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21604] write(3, "1000", 4)         = 4
[pid 21604] close(3)                    = 0
[pid 21604] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21604] write(1, "executing program\n", 18executing program
) = 18
[pid 21604] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21604] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21604] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21604] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21604] exit_group(0)               = ?
[pid 21604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20750", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20750", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20750/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20750/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20750/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20750")                        = 0
mkdir("./20751", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21605 attached
, child_tidptr=0x5555589fe650) = 21605
[pid 21605] set_robust_list(0x5555589fe660, 24) = 0
[pid 21605] chdir("./20751")            = 0
[pid 21605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21605] setpgid(0, 0)               = 0
[pid 21605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21605] write(3, "1000", 4)         = 4
[pid 21605] close(3)                    = 0
[pid 21605] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21605] write(1, "executing program\n", 18executing program
) = 18
[pid 21605] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21605] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21605] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21605] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21605] exit_group(0)               = ?
[pid 21605] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21605, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20751", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20751", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20751/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20751/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20751/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20751")                        = 0
mkdir("./20752", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21606
./strace-static-x86_64: Process 21606 attached
[pid 21606] set_robust_list(0x5555589fe660, 24) = 0
[pid 21606] chdir("./20752")            = 0
[pid 21606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21606] setpgid(0, 0)               = 0
[pid 21606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21606] write(3, "1000", 4)         = 4
[pid 21606] close(3)                    = 0
[pid 21606] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21606] write(1, "executing program\n", 18) = 18
[pid 21606] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21606] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21606] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21606] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21606] exit_group(0)               = ?
[pid 21606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20752", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20752", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20752/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20752/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20752/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20752")                        = 0
mkdir("./20753", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21607
./strace-static-x86_64: Process 21607 attached
[pid 21607] set_robust_list(0x5555589fe660, 24) = 0
[pid 21607] chdir("./20753")            = 0
[pid 21607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21607] setpgid(0, 0)               = 0
[pid 21607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21607] write(3, "1000", 4)         = 4
[pid 21607] close(3)                    = 0
[pid 21607] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21607] write(1, "executing program\n", 18executing program
) = 18
[pid 21607] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21607] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21607] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21607] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21607] exit_group(0)               = ?
[pid 21607] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21607, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20753", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20753", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20753/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20753/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20753/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20753")                        = 0
mkdir("./20754", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21608
./strace-static-x86_64: Process 21608 attached
[pid 21608] set_robust_list(0x5555589fe660, 24) = 0
[pid 21608] chdir("./20754")            = 0
[pid 21608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21608] setpgid(0, 0)               = 0
[pid 21608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21608] write(3, "1000", 4)         = 4
[pid 21608] close(3)                    = 0
[pid 21608] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21608] write(1, "executing program\n", 18) = 18
[pid 21608] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21608] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21608] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21608] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21608] exit_group(0)               = ?
[pid 21608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20754", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20754", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20754/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20754/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20754/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20754")                        = 0
mkdir("./20755", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21609 attached
 <unfinished ...>
[pid 21609] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21609
[pid 21609] chdir("./20755")            = 0
[pid 21609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21609] setpgid(0, 0)               = 0
[pid 21609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21609] write(3, "1000", 4)         = 4
[pid 21609] close(3)                    = 0
[pid 21609] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21609] write(1, "executing program\n", 18executing program
) = 18
[pid 21609] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21609] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21609] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21609] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21609] exit_group(0)               = ?
[pid 21609] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21609, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20755", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20755", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20755/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20755/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20755/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20755")                        = 0
mkdir("./20756", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21610
./strace-static-x86_64: Process 21610 attached
[pid 21610] set_robust_list(0x5555589fe660, 24) = 0
[pid 21610] chdir("./20756")            = 0
[pid 21610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21610] setpgid(0, 0)               = 0
[pid 21610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21610] write(3, "1000", 4)         = 4
[pid 21610] close(3)                    = 0
[pid 21610] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21610] write(1, "executing program\n", 18executing program
) = 18
[pid 21610] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21610] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21610] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21610] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21610] exit_group(0)               = ?
[pid 21610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20756", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20756", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20756/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20756/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20756/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20756")                        = 0
mkdir("./20757", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21611
./strace-static-x86_64: Process 21611 attached
[pid 21611] set_robust_list(0x5555589fe660, 24) = 0
[pid 21611] chdir("./20757")            = 0
[pid 21611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21611] setpgid(0, 0)               = 0
[pid 21611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21611] write(3, "1000", 4)         = 4
[pid 21611] close(3)                    = 0
[pid 21611] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21611] write(1, "executing program\n", 18executing program
) = 18
[pid 21611] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21611] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21611] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21611] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21611] exit_group(0)               = ?
[pid 21611] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21611, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20757", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20757", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20757/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20757/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20757/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20757")                        = 0
mkdir("./20758", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21612
./strace-static-x86_64: Process 21612 attached
[pid 21612] set_robust_list(0x5555589fe660, 24) = 0
[pid 21612] chdir("./20758")            = 0
[pid 21612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21612] setpgid(0, 0)               = 0
[pid 21612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21612] write(3, "1000", 4)         = 4
[pid 21612] close(3)                    = 0
[pid 21612] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21612] write(1, "executing program\n", 18executing program
) = 18
[pid 21612] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21612] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21612] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21612] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21612] exit_group(0)               = ?
[pid 21612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20758", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20758", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20758/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20758/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20758/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20758")                        = 0
mkdir("./20759", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21613
./strace-static-x86_64: Process 21613 attached
[pid 21613] set_robust_list(0x5555589fe660, 24) = 0
[pid 21613] chdir("./20759")            = 0
[pid 21613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21613] setpgid(0, 0)               = 0
[pid 21613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21613] write(3, "1000", 4)         = 4
[pid 21613] close(3)                    = 0
[pid 21613] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21613] write(1, "executing program\n", 18executing program
) = 18
[pid 21613] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21613] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21613] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21613] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21613] exit_group(0)               = ?
[pid 21613] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21613, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20759", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20759", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20759/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20759/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20759/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20759")                        = 0
mkdir("./20760", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21614 attached
 <unfinished ...>
[pid 21614] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21614
[pid 21614] chdir("./20760")            = 0
[pid 21614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21614] setpgid(0, 0)               = 0
[pid 21614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21614] write(3, "1000", 4)         = 4
[pid 21614] close(3)                    = 0
[pid 21614] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21614] write(1, "executing program\n", 18executing program
) = 18
[pid 21614] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21614] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21614] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21614] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21614] exit_group(0)               = ?
[pid 21614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20760", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20760", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20760/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20760/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20760/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20760")                        = 0
mkdir("./20761", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21615
./strace-static-x86_64: Process 21615 attached
[pid 21615] set_robust_list(0x5555589fe660, 24) = 0
[pid 21615] chdir("./20761")            = 0
[pid 21615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21615] setpgid(0, 0)               = 0
[pid 21615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21615] write(3, "1000", 4)         = 4
[pid 21615] close(3)                    = 0
[pid 21615] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21615] write(1, "executing program\n", 18executing program
) = 18
[pid 21615] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21615] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21615] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21615] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21615] exit_group(0)               = ?
[pid 21615] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21615, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20761", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20761", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20761/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20761/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20761/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20761")                        = 0
mkdir("./20762", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21616
./strace-static-x86_64: Process 21616 attached
[pid 21616] set_robust_list(0x5555589fe660, 24) = 0
[pid 21616] chdir("./20762")            = 0
[pid 21616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21616] setpgid(0, 0)               = 0
[pid 21616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21616] write(3, "1000", 4)         = 4
[pid 21616] close(3)                    = 0
[pid 21616] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21616] write(1, "executing program\n", 18executing program
) = 18
[pid 21616] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21616] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21616] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21616] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21616] exit_group(0)               = ?
[pid 21616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20762", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20762", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20762/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20762/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20762/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20762")                        = 0
mkdir("./20763", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21617
./strace-static-x86_64: Process 21617 attached
[pid 21617] set_robust_list(0x5555589fe660, 24) = 0
[pid 21617] chdir("./20763")            = 0
[pid 21617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21617] setpgid(0, 0)               = 0
[pid 21617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21617] write(3, "1000", 4)         = 4
[pid 21617] close(3)                    = 0
[pid 21617] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21617] write(1, "executing program\n", 18executing program
) = 18
[pid 21617] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21617] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21617] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21617] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21617] exit_group(0)               = ?
[pid 21617] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21617, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20763", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20763", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20763/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20763/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20763/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20763")                        = 0
mkdir("./20764", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21618
./strace-static-x86_64: Process 21618 attached
[pid 21618] set_robust_list(0x5555589fe660, 24) = 0
[pid 21618] chdir("./20764")            = 0
[pid 21618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21618] setpgid(0, 0)               = 0
[pid 21618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21618] write(3, "1000", 4)         = 4
[pid 21618] close(3)                    = 0
[pid 21618] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21618] write(1, "executing program\n", 18executing program
) = 18
[pid 21618] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21618] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21618] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21618] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21618] exit_group(0)               = ?
[pid 21618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20764", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20764", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20764/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20764/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20764/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20764")                        = 0
mkdir("./20765", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21619 attached
 <unfinished ...>
[pid 21619] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21619
[pid 21619] chdir("./20765")            = 0
[pid 21619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21619] setpgid(0, 0)               = 0
[pid 21619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21619] write(3, "1000", 4)         = 4
[pid 21619] close(3)                    = 0
[pid 21619] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21619] write(1, "executing program\n", 18executing program
) = 18
[pid 21619] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21619] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21619] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21619] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21619] exit_group(0)               = ?
[pid 21619] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21619, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20765", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20765", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20765/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20765/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20765/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20765")                        = 0
mkdir("./20766", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21620
./strace-static-x86_64: Process 21620 attached
[pid 21620] set_robust_list(0x5555589fe660, 24) = 0
[pid 21620] chdir("./20766")            = 0
[pid 21620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21620] setpgid(0, 0)               = 0
[pid 21620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21620] write(3, "1000", 4)         = 4
[pid 21620] close(3)                    = 0
[pid 21620] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21620] write(1, "executing program\n", 18executing program
) = 18
[pid 21620] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21620] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21620] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21620] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21620] exit_group(0)               = ?
[pid 21620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20766", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20766", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20766/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20766/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20766/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20766")                        = 0
mkdir("./20767", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21621 attached
 <unfinished ...>
[pid 21621] set_robust_list(0x5555589fe660, 24) = 0
[pid 21621] chdir("./20767")            = 0
[pid 21621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21621] setpgid(0, 0)               = 0
[pid 21621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21621
[pid 21621] <... openat resumed>)       = 3
[pid 21621] write(3, "1000", 4)         = 4
[pid 21621] close(3)                    = 0
[pid 21621] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21621] write(1, "executing program\n", 18executing program
) = 18
[pid 21621] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21621] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21621] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21621] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21621] exit_group(0)               = ?
[pid 21621] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21621, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20767", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20767", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20767/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20767/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20767/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20767")                        = 0
mkdir("./20768", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21623
./strace-static-x86_64: Process 21623 attached
[pid 21623] set_robust_list(0x5555589fe660, 24) = 0
[pid 21623] chdir("./20768")            = 0
[pid 21623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21623] setpgid(0, 0)               = 0
[pid 21623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21623] write(3, "1000", 4)         = 4
[pid 21623] close(3)                    = 0
[pid 21623] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21623] write(1, "executing program\n", 18executing program
) = 18
[pid 21623] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21623] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21623] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21623] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21623] exit_group(0)               = ?
[pid 21623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21623, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20768", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20768", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20768/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20768/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20768/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20768")                        = 0
mkdir("./20769", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21624
./strace-static-x86_64: Process 21624 attached
[pid 21624] set_robust_list(0x5555589fe660, 24) = 0
[pid 21624] chdir("./20769")            = 0
[pid 21624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21624] setpgid(0, 0)               = 0
[pid 21624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21624] write(3, "1000", 4)         = 4
[pid 21624] close(3)                    = 0
[pid 21624] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21624] write(1, "executing program\n", 18executing program
) = 18
[pid 21624] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21624] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21624] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21624] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21624] exit_group(0)               = ?
[pid 21624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20769", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20769", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20769/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20769/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20769/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20769")                        = 0
mkdir("./20770", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21625
./strace-static-x86_64: Process 21625 attached
[pid 21625] set_robust_list(0x5555589fe660, 24) = 0
[pid 21625] chdir("./20770")            = 0
[pid 21625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21625] setpgid(0, 0)               = 0
[pid 21625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21625] write(3, "1000", 4)         = 4
[pid 21625] close(3)                    = 0
[pid 21625] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21625] write(1, "executing program\n", 18executing program
) = 18
[pid 21625] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21625] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21625] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21625] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21625] exit_group(0)               = ?
[pid 21625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21625, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20770", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20770", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20770/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20770/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20770/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20770")                        = 0
mkdir("./20771", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21626
./strace-static-x86_64: Process 21626 attached
[pid 21626] set_robust_list(0x5555589fe660, 24) = 0
[pid 21626] chdir("./20771")            = 0
[pid 21626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21626] setpgid(0, 0)               = 0
[pid 21626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21626] write(3, "1000", 4)         = 4
[pid 21626] close(3)                    = 0
[pid 21626] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21626] write(1, "executing program\n", 18executing program
) = 18
[pid 21626] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21626] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21626] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21626] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21626] exit_group(0)               = ?
[pid 21626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20771", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20771", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20771/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20771/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20771/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20771")                        = 0
mkdir("./20772", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21627 attached
 <unfinished ...>
[pid 21627] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21627
[pid 21627] chdir("./20772")            = 0
[pid 21627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21627] setpgid(0, 0)               = 0
[pid 21627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21627] write(3, "1000", 4)         = 4
[pid 21627] close(3)                    = 0
[pid 21627] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21627] write(1, "executing program\n", 18executing program
) = 18
[pid 21627] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21627] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21627] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21627] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21627] exit_group(0)               = ?
[pid 21627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21627, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20772", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20772", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20772/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20772/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20772/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20772")                        = 0
mkdir("./20773", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21628
./strace-static-x86_64: Process 21628 attached
[pid 21628] set_robust_list(0x5555589fe660, 24) = 0
[pid 21628] chdir("./20773")            = 0
[pid 21628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21628] setpgid(0, 0)               = 0
[pid 21628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21628] write(3, "1000", 4)         = 4
[pid 21628] close(3)                    = 0
[pid 21628] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21628] write(1, "executing program\n", 18executing program
) = 18
[pid 21628] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21628] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21628] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21628] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21628] exit_group(0)               = ?
[pid 21628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20773", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20773", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20773/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20773/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20773/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20773")                        = 0
mkdir("./20774", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21629
./strace-static-x86_64: Process 21629 attached
[pid 21629] set_robust_list(0x5555589fe660, 24) = 0
[pid 21629] chdir("./20774")            = 0
[pid 21629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21629] setpgid(0, 0)               = 0
[pid 21629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21629] write(3, "1000", 4)         = 4
[pid 21629] close(3)                    = 0
[pid 21629] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21629] write(1, "executing program\n", 18executing program
) = 18
[pid 21629] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21629] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21629] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21629] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21629] exit_group(0)               = ?
[pid 21629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21629, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20774", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20774", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20774/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20774/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20774/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20774")                        = 0
mkdir("./20775", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21630
./strace-static-x86_64: Process 21630 attached
[pid 21630] set_robust_list(0x5555589fe660, 24) = 0
[pid 21630] chdir("./20775")            = 0
[pid 21630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21630] setpgid(0, 0)               = 0
[pid 21630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21630] write(3, "1000", 4)         = 4
[pid 21630] close(3)                    = 0
[pid 21630] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21630] write(1, "executing program\n", 18executing program
) = 18
[pid 21630] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21630] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21630] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21630] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21630] exit_group(0)               = ?
[pid 21630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20775", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20775", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20775/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20775/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20775/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20775")                        = 0
mkdir("./20776", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21631
./strace-static-x86_64: Process 21631 attached
[pid 21631] set_robust_list(0x5555589fe660, 24) = 0
[pid 21631] chdir("./20776")            = 0
[pid 21631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21631] setpgid(0, 0)               = 0
[pid 21631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21631] write(3, "1000", 4)         = 4
[pid 21631] close(3)                    = 0
[pid 21631] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21631] write(1, "executing program\n", 18executing program
) = 18
[pid 21631] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21631] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21631] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21631] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21631] exit_group(0)               = ?
[pid 21631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21631, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20776", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20776", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20776/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20776/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20776/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20776")                        = 0
mkdir("./20777", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21632
./strace-static-x86_64: Process 21632 attached
[pid 21632] set_robust_list(0x5555589fe660, 24) = 0
[pid 21632] chdir("./20777")            = 0
[pid 21632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21632] setpgid(0, 0)               = 0
[pid 21632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21632] write(3, "1000", 4)         = 4
[pid 21632] close(3)                    = 0
[pid 21632] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21632] write(1, "executing program\n", 18executing program
) = 18
[pid 21632] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21632] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21632] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21632] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21632] exit_group(0)               = ?
[pid 21632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20777", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20777", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20777/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20777/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20777/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20777")                        = 0
mkdir("./20778", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21633
./strace-static-x86_64: Process 21633 attached
[pid 21633] set_robust_list(0x5555589fe660, 24) = 0
[pid 21633] chdir("./20778")            = 0
[pid 21633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21633] setpgid(0, 0)               = 0
[pid 21633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21633] write(3, "1000", 4)         = 4
[pid 21633] close(3)                    = 0
[pid 21633] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21633] write(1, "executing program\n", 18executing program
) = 18
[pid 21633] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21633] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21633] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21633] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21633] exit_group(0)               = ?
[pid 21633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21633, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20778", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20778", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20778/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20778/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20778/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20778")                        = 0
mkdir("./20779", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21634
./strace-static-x86_64: Process 21634 attached
[pid 21634] set_robust_list(0x5555589fe660, 24) = 0
[pid 21634] chdir("./20779")            = 0
[pid 21634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21634] setpgid(0, 0)               = 0
[pid 21634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21634] write(3, "1000", 4)         = 4
[pid 21634] close(3)                    = 0
[pid 21634] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21634] write(1, "executing program\n", 18executing program
) = 18
[pid 21634] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21634] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21634] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21634] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21634] exit_group(0)               = ?
[pid 21634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20779", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20779", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20779/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20779/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20779/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20779")                        = 0
mkdir("./20780", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21635
./strace-static-x86_64: Process 21635 attached
[pid 21635] set_robust_list(0x5555589fe660, 24) = 0
[pid 21635] chdir("./20780")            = 0
[pid 21635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21635] setpgid(0, 0)               = 0
[pid 21635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21635] write(3, "1000", 4)         = 4
[pid 21635] close(3)                    = 0
[pid 21635] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21635] write(1, "executing program\n", 18executing program
) = 18
[pid 21635] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21635] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21635] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21635] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21635] exit_group(0)               = ?
[pid 21635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21635, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20780", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20780", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20780/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20780/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20780/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20780")                        = 0
mkdir("./20781", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21636
./strace-static-x86_64: Process 21636 attached
[pid 21636] set_robust_list(0x5555589fe660, 24) = 0
[pid 21636] chdir("./20781")            = 0
[pid 21636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21636] setpgid(0, 0)               = 0
[pid 21636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21636] write(3, "1000", 4)         = 4
[pid 21636] close(3)                    = 0
[pid 21636] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21636] write(1, "executing program\n", 18executing program
) = 18
[pid 21636] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21636] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21636] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21636] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21636] exit_group(0)               = ?
[pid 21636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20781", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20781", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20781/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20781/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20781/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20781")                        = 0
mkdir("./20782", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21637
./strace-static-x86_64: Process 21637 attached
[pid 21637] set_robust_list(0x5555589fe660, 24) = 0
[pid 21637] chdir("./20782")            = 0
[pid 21637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21637] setpgid(0, 0)               = 0
[pid 21637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21637] write(3, "1000", 4)         = 4
[pid 21637] close(3)                    = 0
[pid 21637] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21637] write(1, "executing program\n", 18executing program
) = 18
[pid 21637] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21637] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21637] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21637] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21637] exit_group(0)               = ?
[pid 21637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21637, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20782", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20782", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20782/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20782/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20782/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20782")                        = 0
mkdir("./20783", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21638
./strace-static-x86_64: Process 21638 attached
[pid 21638] set_robust_list(0x5555589fe660, 24) = 0
[pid 21638] chdir("./20783")            = 0
[pid 21638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21638] setpgid(0, 0)               = 0
[pid 21638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21638] write(3, "1000", 4)         = 4
[pid 21638] close(3)                    = 0
[pid 21638] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21638] write(1, "executing program\n", 18executing program
) = 18
[pid 21638] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21638] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21638] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21638] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21638] exit_group(0)               = ?
[pid 21638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20783", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20783", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20783/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20783/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20783/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20783")                        = 0
mkdir("./20784", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21639
./strace-static-x86_64: Process 21639 attached
[pid 21639] set_robust_list(0x5555589fe660, 24) = 0
[pid 21639] chdir("./20784")            = 0
[pid 21639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21639] setpgid(0, 0)               = 0
[pid 21639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21639] write(3, "1000", 4)         = 4
[pid 21639] close(3)                    = 0
[pid 21639] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21639] write(1, "executing program\n", 18executing program
) = 18
[pid 21639] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21639] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21639] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21639] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21639] exit_group(0)               = ?
[pid 21639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21639, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20784", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20784", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20784/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20784/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20784/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20784")                        = 0
mkdir("./20785", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21640
./strace-static-x86_64: Process 21640 attached
[pid 21640] set_robust_list(0x5555589fe660, 24) = 0
[pid 21640] chdir("./20785")            = 0
[pid 21640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21640] setpgid(0, 0)               = 0
[pid 21640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21640] write(3, "1000", 4)         = 4
[pid 21640] close(3)                    = 0
[pid 21640] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21640] write(1, "executing program\n", 18executing program
) = 18
[pid 21640] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21640] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21640] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21640] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21640] exit_group(0)               = ?
[pid 21640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20785", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20785", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20785/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20785/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20785/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20785")                        = 0
mkdir("./20786", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21641
./strace-static-x86_64: Process 21641 attached
[pid 21641] set_robust_list(0x5555589fe660, 24) = 0
[pid 21641] chdir("./20786")            = 0
[pid 21641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21641] setpgid(0, 0)               = 0
[pid 21641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21641] write(3, "1000", 4)         = 4
[pid 21641] close(3)                    = 0
[pid 21641] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21641] write(1, "executing program\n", 18) = 18
[pid 21641] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21641] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21641] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21641] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21641] exit_group(0)               = ?
[pid 21641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21641, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20786", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20786", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20786/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20786/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20786/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20786")                        = 0
mkdir("./20787", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21642
./strace-static-x86_64: Process 21642 attached
[pid 21642] set_robust_list(0x5555589fe660, 24) = 0
[pid 21642] chdir("./20787")            = 0
[pid 21642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21642] setpgid(0, 0)               = 0
[pid 21642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21642] write(3, "1000", 4)         = 4
[pid 21642] close(3)                    = 0
[pid 21642] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21642] write(1, "executing program\n", 18executing program
) = 18
[pid 21642] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21642] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21642] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21642] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21642] exit_group(0)               = ?
[pid 21642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20787", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20787", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20787/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20787/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20787/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20787")                        = 0
mkdir("./20788", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21643
./strace-static-x86_64: Process 21643 attached
[pid 21643] set_robust_list(0x5555589fe660, 24) = 0
[pid 21643] chdir("./20788")            = 0
[pid 21643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21643] setpgid(0, 0)               = 0
[pid 21643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21643] write(3, "1000", 4)         = 4
[pid 21643] close(3)                    = 0
[pid 21643] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21643] write(1, "executing program\n", 18) = 18
[pid 21643] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21643] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21643] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21643] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21643] exit_group(0)               = ?
[pid 21643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21643, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20788", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20788", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20788/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20788/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20788/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20788")                        = 0
mkdir("./20789", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21644
./strace-static-x86_64: Process 21644 attached
[pid 21644] set_robust_list(0x5555589fe660, 24) = 0
[pid 21644] chdir("./20789")            = 0
[pid 21644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21644] setpgid(0, 0)               = 0
[pid 21644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21644] write(3, "1000", 4)         = 4
[pid 21644] close(3)                    = 0
[pid 21644] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21644] write(1, "executing program\n", 18executing program
) = 18
[pid 21644] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21644] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21644] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21644] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21644] exit_group(0)               = ?
[pid 21644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20789", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20789", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20789/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20789/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20789/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20789")                        = 0
mkdir("./20790", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21645
./strace-static-x86_64: Process 21645 attached
[pid 21645] set_robust_list(0x5555589fe660, 24) = 0
[pid 21645] chdir("./20790")            = 0
[pid 21645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21645] setpgid(0, 0)               = 0
[pid 21645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21645] write(3, "1000", 4)         = 4
[pid 21645] close(3)                    = 0
[pid 21645] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21645] write(1, "executing program\n", 18executing program
) = 18
[pid 21645] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21645] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21645] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21645] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21645] exit_group(0)               = ?
[pid 21645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21645, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20790", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20790", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20790/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20790/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20790/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20790")                        = 0
mkdir("./20791", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21646 attached
 <unfinished ...>
[pid 21646] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21646
[pid 21646] chdir("./20791")            = 0
[pid 21646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21646] setpgid(0, 0)               = 0
[pid 21646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21646] write(3, "1000", 4)         = 4
[pid 21646] close(3)                    = 0
[pid 21646] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21646] write(1, "executing program\n", 18executing program
) = 18
[pid 21646] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21646] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21646] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21646] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21646] exit_group(0)               = ?
[pid 21646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20791", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20791", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20791/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20791/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20791/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20791")                        = 0
mkdir("./20792", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21647 attached
, child_tidptr=0x5555589fe650) = 21647
[pid 21647] set_robust_list(0x5555589fe660, 24) = 0
[pid 21647] chdir("./20792")            = 0
[pid 21647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21647] setpgid(0, 0)               = 0
[pid 21647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21647] write(3, "1000", 4)         = 4
[pid 21647] close(3)                    = 0
[pid 21647] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21647] write(1, "executing program\n", 18executing program
) = 18
[pid 21647] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21647] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21647] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21647] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21647] exit_group(0)               = ?
[pid 21647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21647, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20792", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20792", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20792/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20792/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20792/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20792")                        = 0
mkdir("./20793", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21648
./strace-static-x86_64: Process 21648 attached
[pid 21648] set_robust_list(0x5555589fe660, 24) = 0
[pid 21648] chdir("./20793")            = 0
[pid 21648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21648] setpgid(0, 0)               = 0
[pid 21648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21648] write(3, "1000", 4)         = 4
[pid 21648] close(3)                    = 0
[pid 21648] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21648] write(1, "executing program\n", 18executing program
) = 18
[pid 21648] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21648] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21648] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21648] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21648] exit_group(0)               = ?
[pid 21648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20793", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20793", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20793/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20793/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20793/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20793")                        = 0
mkdir("./20794", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21649
./strace-static-x86_64: Process 21649 attached
[pid 21649] set_robust_list(0x5555589fe660, 24) = 0
[pid 21649] chdir("./20794")            = 0
[pid 21649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21649] setpgid(0, 0)               = 0
[pid 21649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21649] write(3, "1000", 4)         = 4
[pid 21649] close(3)                    = 0
[pid 21649] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21649] write(1, "executing program\n", 18executing program
) = 18
[pid 21649] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21649] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21649] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21649] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21649] exit_group(0)               = ?
[pid 21649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21649, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20794", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20794", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20794/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20794/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20794/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20794")                        = 0
mkdir("./20795", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21650
./strace-static-x86_64: Process 21650 attached
[pid 21650] set_robust_list(0x5555589fe660, 24) = 0
[pid 21650] chdir("./20795")            = 0
[pid 21650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21650] setpgid(0, 0)               = 0
[pid 21650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21650] write(3, "1000", 4)         = 4
[pid 21650] close(3)                    = 0
[pid 21650] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21650] write(1, "executing program\n", 18executing program
) = 18
[pid 21650] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21650] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21650] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21650] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21650] exit_group(0)               = ?
[pid 21650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20795", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20795", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20795/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20795/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20795/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20795")                        = 0
mkdir("./20796", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21651
./strace-static-x86_64: Process 21651 attached
[pid 21651] set_robust_list(0x5555589fe660, 24) = 0
[pid 21651] chdir("./20796")            = 0
[pid 21651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21651] setpgid(0, 0)               = 0
[pid 21651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21651] write(3, "1000", 4)         = 4
[pid 21651] close(3)                    = 0
[pid 21651] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21651] write(1, "executing program\n", 18executing program
) = 18
[pid 21651] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21651] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21651] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21651] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21651] exit_group(0)               = ?
[pid 21651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21651, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20796", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20796", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20796/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20796/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20796/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20796")                        = 0
mkdir("./20797", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21652
./strace-static-x86_64: Process 21652 attached
[pid 21652] set_robust_list(0x5555589fe660, 24) = 0
[pid 21652] chdir("./20797")            = 0
[pid 21652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21652] setpgid(0, 0)               = 0
[pid 21652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21652] write(3, "1000", 4)         = 4
[pid 21652] close(3)                    = 0
[pid 21652] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21652] write(1, "executing program\n", 18executing program
) = 18
[pid 21652] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21652] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21652] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21652] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21652] exit_group(0)               = ?
[pid 21652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20797", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20797", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20797/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20797/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20797/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20797")                        = 0
mkdir("./20798", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21653
./strace-static-x86_64: Process 21653 attached
[pid 21653] set_robust_list(0x5555589fe660, 24) = 0
[pid 21653] chdir("./20798")            = 0
[pid 21653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21653] setpgid(0, 0)               = 0
[pid 21653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21653] write(3, "1000", 4)         = 4
[pid 21653] close(3)                    = 0
[pid 21653] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21653] write(1, "executing program\n", 18executing program
) = 18
[pid 21653] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21653] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21653] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21653] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21653] exit_group(0)               = ?
[pid 21653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21653, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20798", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20798", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20798/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20798/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20798/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20798")                        = 0
mkdir("./20799", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21654
./strace-static-x86_64: Process 21654 attached
[pid 21654] set_robust_list(0x5555589fe660, 24) = 0
[pid 21654] chdir("./20799")            = 0
[pid 21654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21654] setpgid(0, 0)               = 0
[pid 21654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21654] write(3, "1000", 4)         = 4
[pid 21654] close(3)                    = 0
[pid 21654] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21654] write(1, "executing program\n", 18executing program
) = 18
[pid 21654] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21654] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21654] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21654] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21654] exit_group(0)               = ?
[pid 21654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20799", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20799", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20799/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20799/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20799/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20799")                        = 0
mkdir("./20800", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21655
./strace-static-x86_64: Process 21655 attached
[pid 21655] set_robust_list(0x5555589fe660, 24) = 0
[pid 21655] chdir("./20800")            = 0
[pid 21655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21655] setpgid(0, 0)               = 0
[pid 21655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21655] write(3, "1000", 4)         = 4
[pid 21655] close(3)                    = 0
[pid 21655] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21655] write(1, "executing program\n", 18executing program
) = 18
[pid 21655] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21655] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21655] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21655] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21655] exit_group(0)               = ?
[pid 21655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21655, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20800", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20800", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20800/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20800/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20800/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20800")                        = 0
mkdir("./20801", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21656
./strace-static-x86_64: Process 21656 attached
[pid 21656] set_robust_list(0x5555589fe660, 24) = 0
[pid 21656] chdir("./20801")            = 0
[pid 21656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21656] setpgid(0, 0)               = 0
[pid 21656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21656] write(3, "1000", 4)         = 4
[pid 21656] close(3)                    = 0
[pid 21656] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21656] write(1, "executing program\n", 18) = 18
[pid 21656] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21656] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21656] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21656] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21656] exit_group(0)               = ?
[pid 21656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20801", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20801", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20801/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20801/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20801/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20801")                        = 0
mkdir("./20802", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21657
./strace-static-x86_64: Process 21657 attached
[pid 21657] set_robust_list(0x5555589fe660, 24) = 0
[pid 21657] chdir("./20802")            = 0
[pid 21657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21657] setpgid(0, 0)               = 0
[pid 21657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21657] write(3, "1000", 4)         = 4
[pid 21657] close(3)                    = 0
[pid 21657] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21657] write(1, "executing program\n", 18executing program
) = 18
[pid 21657] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21657] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21657] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21657] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21657] exit_group(0)               = ?
[pid 21657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21657, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20802", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20802", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20802/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20802/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20802/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20802")                        = 0
mkdir("./20803", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21658
./strace-static-x86_64: Process 21658 attached
[pid 21658] set_robust_list(0x5555589fe660, 24) = 0
[pid 21658] chdir("./20803")            = 0
[pid 21658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21658] setpgid(0, 0)               = 0
[pid 21658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21658] write(3, "1000", 4)         = 4
[pid 21658] close(3)                    = 0
[pid 21658] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21658] write(1, "executing program\n", 18executing program
) = 18
[pid 21658] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21658] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21658] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21658] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21658] exit_group(0)               = ?
[pid 21658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20803", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20803", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20803/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20803/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20803/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20803")                        = 0
mkdir("./20804", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21659
./strace-static-x86_64: Process 21659 attached
[pid 21659] set_robust_list(0x5555589fe660, 24) = 0
[pid 21659] chdir("./20804")            = 0
[pid 21659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21659] setpgid(0, 0)               = 0
[pid 21659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21659] write(3, "1000", 4)         = 4
[pid 21659] close(3)                    = 0
[pid 21659] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21659] write(1, "executing program\n", 18executing program
) = 18
[pid 21659] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21659] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21659] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21659] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21659] exit_group(0)               = ?
[pid 21659] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21659, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20804", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20804", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20804/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20804/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20804/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20804")                        = 0
mkdir("./20805", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21660
./strace-static-x86_64: Process 21660 attached
[pid 21660] set_robust_list(0x5555589fe660, 24) = 0
[pid 21660] chdir("./20805")            = 0
[pid 21660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21660] setpgid(0, 0)               = 0
[pid 21660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21660] write(3, "1000", 4)         = 4
[pid 21660] close(3)                    = 0
[pid 21660] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21660] write(1, "executing program\n", 18executing program
) = 18
[pid 21660] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21660] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21660] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21660] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21660] exit_group(0)               = ?
[pid 21660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20805", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20805", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20805/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20805/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20805/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20805")                        = 0
mkdir("./20806", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21661
./strace-static-x86_64: Process 21661 attached
[pid 21661] set_robust_list(0x5555589fe660, 24) = 0
[pid 21661] chdir("./20806")            = 0
[pid 21661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21661] setpgid(0, 0)               = 0
[pid 21661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21661] write(3, "1000", 4)         = 4
[pid 21661] close(3)                    = 0
[pid 21661] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21661] write(1, "executing program\n", 18executing program
) = 18
[pid 21661] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21661] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21661] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21661] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21661] exit_group(0)               = ?
[pid 21661] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21661, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20806", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20806", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20806/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20806/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20806/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20806")                        = 0
mkdir("./20807", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21662
./strace-static-x86_64: Process 21662 attached
[pid 21662] set_robust_list(0x5555589fe660, 24) = 0
[pid 21662] chdir("./20807")            = 0
[pid 21662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21662] setpgid(0, 0)               = 0
[pid 21662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21662] write(3, "1000", 4)         = 4
[pid 21662] close(3)                    = 0
[pid 21662] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21662] write(1, "executing program\n", 18) = 18
[pid 21662] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21662] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21662] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21662] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21662] exit_group(0)               = ?
[pid 21662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20807", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20807", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20807/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20807/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20807/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20807")                        = 0
mkdir("./20808", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21663
./strace-static-x86_64: Process 21663 attached
[pid 21663] set_robust_list(0x5555589fe660, 24) = 0
[pid 21663] chdir("./20808")            = 0
[pid 21663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21663] setpgid(0, 0)               = 0
[pid 21663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21663] write(3, "1000", 4)         = 4
[pid 21663] close(3)                    = 0
[pid 21663] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21663] write(1, "executing program\n", 18) = 18
[pid 21663] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21663] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21663] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21663] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21663] exit_group(0)               = ?
[pid 21663] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21663, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20808", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20808", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20808/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20808/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20808/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20808")                        = 0
mkdir("./20809", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21664
./strace-static-x86_64: Process 21664 attached
[pid 21664] set_robust_list(0x5555589fe660, 24) = 0
[pid 21664] chdir("./20809")            = 0
[pid 21664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21664] setpgid(0, 0)               = 0
[pid 21664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21664] write(3, "1000", 4)         = 4
[pid 21664] close(3)                    = 0
[pid 21664] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21664] write(1, "executing program\n", 18executing program
) = 18
[pid 21664] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21664] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21664] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21664] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21664] exit_group(0)               = ?
[pid 21664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20809", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20809", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20809/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20809/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20809/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20809")                        = 0
mkdir("./20810", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21665
./strace-static-x86_64: Process 21665 attached
[pid 21665] set_robust_list(0x5555589fe660, 24) = 0
[pid 21665] chdir("./20810")            = 0
[pid 21665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21665] setpgid(0, 0)               = 0
[pid 21665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21665] write(3, "1000", 4)         = 4
[pid 21665] close(3)                    = 0
[pid 21665] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21665] write(1, "executing program\n", 18executing program
) = 18
[pid 21665] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21665] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21665] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21665] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21665] exit_group(0)               = ?
[pid 21665] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21665, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20810", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20810", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20810/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20810/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20810/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20810")                        = 0
mkdir("./20811", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21666
./strace-static-x86_64: Process 21666 attached
[pid 21666] set_robust_list(0x5555589fe660, 24) = 0
[pid 21666] chdir("./20811")            = 0
[pid 21666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21666] setpgid(0, 0)               = 0
[pid 21666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21666] write(3, "1000", 4)         = 4
[pid 21666] close(3)                    = 0
[pid 21666] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21666] write(1, "executing program\n", 18executing program
) = 18
[pid 21666] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21666] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21666] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21666] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21666] exit_group(0)               = ?
[pid 21666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20811", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20811", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20811/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20811/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20811/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20811")                        = 0
mkdir("./20812", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21667
./strace-static-x86_64: Process 21667 attached
[pid 21667] set_robust_list(0x5555589fe660, 24) = 0
[pid 21667] chdir("./20812")            = 0
[pid 21667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21667] setpgid(0, 0)               = 0
[pid 21667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21667] write(3, "1000", 4)         = 4
[pid 21667] close(3)                    = 0
[pid 21667] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21667] write(1, "executing program\n", 18) = 18
[pid 21667] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21667] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21667] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21667] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21667] exit_group(0)               = ?
[pid 21667] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21667, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20812", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20812", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20812/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20812/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20812/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20812")                        = 0
mkdir("./20813", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21668
./strace-static-x86_64: Process 21668 attached
[pid 21668] set_robust_list(0x5555589fe660, 24) = 0
[pid 21668] chdir("./20813")            = 0
[pid 21668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21668] setpgid(0, 0)               = 0
[pid 21668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21668] write(3, "1000", 4)         = 4
[pid 21668] close(3)                    = 0
[pid 21668] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21668] write(1, "executing program\n", 18executing program
) = 18
[pid 21668] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21668] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21668] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21668] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21668] exit_group(0)               = ?
[pid 21668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20813", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20813", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20813/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20813/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20813/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20813")                        = 0
mkdir("./20814", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21669
./strace-static-x86_64: Process 21669 attached
[pid 21669] set_robust_list(0x5555589fe660, 24) = 0
[pid 21669] chdir("./20814")            = 0
[pid 21669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21669] setpgid(0, 0)               = 0
[pid 21669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21669] write(3, "1000", 4)         = 4
[pid 21669] close(3)                    = 0
[pid 21669] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21669] write(1, "executing program\n", 18executing program
) = 18
[pid 21669] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21669] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21669] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21669] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21669] exit_group(0)               = ?
[pid 21669] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21669, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20814", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20814", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20814/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20814/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20814/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20814")                        = 0
mkdir("./20815", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21670
./strace-static-x86_64: Process 21670 attached
[pid 21670] set_robust_list(0x5555589fe660, 24) = 0
[pid 21670] chdir("./20815")            = 0
[pid 21670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21670] setpgid(0, 0)               = 0
[pid 21670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21670] write(3, "1000", 4)         = 4
[pid 21670] close(3)                    = 0
[pid 21670] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21670] write(1, "executing program\n", 18executing program
) = 18
[pid 21670] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21670] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21670] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21670] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21670] exit_group(0)               = ?
[pid 21670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20815", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20815", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20815/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20815/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20815/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20815")                        = 0
mkdir("./20816", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21671 attached
 <unfinished ...>
[pid 21671] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21671
[pid 21671] chdir("./20816")            = 0
[pid 21671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21671] setpgid(0, 0)               = 0
[pid 21671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21671] write(3, "1000", 4)         = 4
[pid 21671] close(3)                    = 0
[pid 21671] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21671] write(1, "executing program\n", 18executing program
) = 18
[pid 21671] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21671] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21671] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21671] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21671] exit_group(0)               = ?
[pid 21671] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21671, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20816", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20816", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20816/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20816/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20816/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20816")                        = 0
mkdir("./20817", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21672
./strace-static-x86_64: Process 21672 attached
[pid 21672] set_robust_list(0x5555589fe660, 24) = 0
[pid 21672] chdir("./20817")            = 0
[pid 21672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21672] setpgid(0, 0)               = 0
[pid 21672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21672] write(3, "1000", 4)         = 4
[pid 21672] close(3)                    = 0
[pid 21672] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21672] write(1, "executing program\n", 18executing program
) = 18
[pid 21672] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21672] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21672] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21672] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21672] exit_group(0)               = ?
[pid 21672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20817", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20817", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20817/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20817/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20817/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20817")                        = 0
mkdir("./20818", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21673
./strace-static-x86_64: Process 21673 attached
[pid 21673] set_robust_list(0x5555589fe660, 24) = 0
[pid 21673] chdir("./20818")            = 0
[pid 21673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21673] setpgid(0, 0)               = 0
[pid 21673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21673] write(3, "1000", 4)         = 4
[pid 21673] close(3)                    = 0
[pid 21673] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21673] write(1, "executing program\n", 18executing program
) = 18
[pid 21673] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21673] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21673] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21673] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21673] exit_group(0)               = ?
[pid 21673] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21673, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20818", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20818", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20818/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20818/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20818/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20818")                        = 0
mkdir("./20819", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21674
./strace-static-x86_64: Process 21674 attached
[pid 21674] set_robust_list(0x5555589fe660, 24) = 0
[pid 21674] chdir("./20819")            = 0
[pid 21674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21674] setpgid(0, 0)               = 0
[pid 21674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21674] write(3, "1000", 4)         = 4
[pid 21674] close(3)                    = 0
[pid 21674] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21674] write(1, "executing program\n", 18executing program
) = 18
[pid 21674] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21674] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21674] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21674] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21674] exit_group(0)               = ?
[pid 21674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20819", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20819", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20819/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20819/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20819/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20819")                        = 0
mkdir("./20820", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21675 attached
, child_tidptr=0x5555589fe650) = 21675
[pid 21675] set_robust_list(0x5555589fe660, 24) = 0
[pid 21675] chdir("./20820")            = 0
[pid 21675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21675] setpgid(0, 0)               = 0
[pid 21675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21675] write(3, "1000", 4)         = 4
[pid 21675] close(3)                    = 0
[pid 21675] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21675] write(1, "executing program\n", 18executing program
) = 18
[pid 21675] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21675] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21675] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21675] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21675] exit_group(0)               = ?
[pid 21675] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21675, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20820", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20820", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20820/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20820/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20820/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20820")                        = 0
mkdir("./20821", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21676
./strace-static-x86_64: Process 21676 attached
[pid 21676] set_robust_list(0x5555589fe660, 24) = 0
[pid 21676] chdir("./20821")            = 0
[pid 21676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21676] setpgid(0, 0)               = 0
[pid 21676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21676] write(3, "1000", 4)         = 4
[pid 21676] close(3)                    = 0
[pid 21676] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21676] write(1, "executing program\n", 18executing program
) = 18
[pid 21676] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21676] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21676] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21676] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21676] exit_group(0)               = ?
[pid 21676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20821", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20821", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20821/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20821/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20821/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20821")                        = 0
mkdir("./20822", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21677
./strace-static-x86_64: Process 21677 attached
[pid 21677] set_robust_list(0x5555589fe660, 24) = 0
[pid 21677] chdir("./20822")            = 0
[pid 21677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21677] setpgid(0, 0)               = 0
[pid 21677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21677] write(3, "1000", 4)         = 4
[pid 21677] close(3)                    = 0
[pid 21677] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21677] write(1, "executing program\n", 18) = 18
[pid 21677] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21677] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21677] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21677] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21677] exit_group(0)               = ?
[pid 21677] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21677, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20822", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20822", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20822/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20822/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20822/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20822")                        = 0
mkdir("./20823", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21678
./strace-static-x86_64: Process 21678 attached
[pid 21678] set_robust_list(0x5555589fe660, 24) = 0
[pid 21678] chdir("./20823")            = 0
[pid 21678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21678] setpgid(0, 0)               = 0
[pid 21678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21678] write(3, "1000", 4)         = 4
[pid 21678] close(3)                    = 0
[pid 21678] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21678] write(1, "executing program\n", 18executing program
) = 18
[pid 21678] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21678] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21678] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21678] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21678] exit_group(0)               = ?
[pid 21678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20823", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20823", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20823/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20823/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20823/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20823")                        = 0
mkdir("./20824", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21679
./strace-static-x86_64: Process 21679 attached
[pid 21679] set_robust_list(0x5555589fe660, 24) = 0
[pid 21679] chdir("./20824")            = 0
[pid 21679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21679] setpgid(0, 0)               = 0
[pid 21679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21679] write(3, "1000", 4)         = 4
[pid 21679] close(3)                    = 0
[pid 21679] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21679] write(1, "executing program\n", 18executing program
) = 18
[pid 21679] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21679] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21679] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21679] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21679] exit_group(0)               = ?
[pid 21679] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21679, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20824", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20824", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20824/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20824/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20824/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20824")                        = 0
mkdir("./20825", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21680
./strace-static-x86_64: Process 21680 attached
[pid 21680] set_robust_list(0x5555589fe660, 24) = 0
[pid 21680] chdir("./20825")            = 0
[pid 21680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21680] setpgid(0, 0)               = 0
[pid 21680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21680] write(3, "1000", 4)         = 4
[pid 21680] close(3)                    = 0
[pid 21680] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21680] write(1, "executing program\n", 18) = 18
[pid 21680] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21680] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21680] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21680] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21680] exit_group(0)               = ?
[pid 21680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20825", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20825", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20825/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20825/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20825/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20825")                        = 0
mkdir("./20826", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21681
./strace-static-x86_64: Process 21681 attached
[pid 21681] set_robust_list(0x5555589fe660, 24) = 0
[pid 21681] chdir("./20826")            = 0
[pid 21681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21681] setpgid(0, 0)               = 0
[pid 21681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21681] write(3, "1000", 4)         = 4
[pid 21681] close(3)                    = 0
[pid 21681] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21681] write(1, "executing program\n", 18executing program
) = 18
[pid 21681] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21681] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21681] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21681] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21681] exit_group(0)               = ?
[pid 21681] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21681, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20826", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20826", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20826/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20826/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20826/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20826")                        = 0
mkdir("./20827", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21682
./strace-static-x86_64: Process 21682 attached
[pid 21682] set_robust_list(0x5555589fe660, 24) = 0
[pid 21682] chdir("./20827")            = 0
[pid 21682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21682] setpgid(0, 0)               = 0
[pid 21682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21682] write(3, "1000", 4)         = 4
[pid 21682] close(3)                    = 0
[pid 21682] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21682] write(1, "executing program\n", 18) = 18
[pid 21682] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21682] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21682] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21682] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21682] exit_group(0)               = ?
[pid 21682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20827", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20827", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20827/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20827/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20827/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20827")                        = 0
mkdir("./20828", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21683
./strace-static-x86_64: Process 21683 attached
[pid 21683] set_robust_list(0x5555589fe660, 24) = 0
[pid 21683] chdir("./20828")            = 0
[pid 21683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21683] setpgid(0, 0)               = 0
[pid 21683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21683] write(3, "1000", 4)         = 4
[pid 21683] close(3)                    = 0
[pid 21683] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21683] write(1, "executing program\n", 18executing program
) = 18
[pid 21683] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21683] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21683] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21683] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21683] exit_group(0)               = ?
[pid 21683] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21683, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20828", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20828", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20828/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20828/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20828/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20828")                        = 0
mkdir("./20829", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21684 attached
 <unfinished ...>
[pid 21684] set_robust_list(0x5555589fe660, 24) = 0
[pid 21684] chdir("./20829" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21684
[pid 21684] <... chdir resumed>)        = 0
[pid 21684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21684] setpgid(0, 0)               = 0
[pid 21684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21684] write(3, "1000", 4)         = 4
[pid 21684] close(3)                    = 0
[pid 21684] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21684] write(1, "executing program\n", 18executing program
) = 18
[pid 21684] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21684] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21684] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21684] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21684] exit_group(0)               = ?
[pid 21684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20829", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20829", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20829/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20829/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20829/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20829")                        = 0
mkdir("./20830", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21685
./strace-static-x86_64: Process 21685 attached
[pid 21685] set_robust_list(0x5555589fe660, 24) = 0
[pid 21685] chdir("./20830")            = 0
[pid 21685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21685] setpgid(0, 0)               = 0
[pid 21685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21685] write(3, "1000", 4)         = 4
[pid 21685] close(3)                    = 0
[pid 21685] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21685] write(1, "executing program\n", 18) = 18
[pid 21685] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21685] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21685] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21685] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21685] exit_group(0)               = ?
[pid 21685] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21685, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20830", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20830", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20830/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20830/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20830/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20830")                        = 0
mkdir("./20831", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21686
./strace-static-x86_64: Process 21686 attached
[pid 21686] set_robust_list(0x5555589fe660, 24) = 0
[pid 21686] chdir("./20831")            = 0
[pid 21686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21686] setpgid(0, 0)               = 0
[pid 21686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21686] write(3, "1000", 4)         = 4
[pid 21686] close(3)                    = 0
[pid 21686] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21686] write(1, "executing program\n", 18executing program
) = 18
[pid 21686] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21686] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21686] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21686] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21686] exit_group(0)               = ?
[pid 21686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20831", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20831", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20831/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20831/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20831/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20831")                        = 0
mkdir("./20832", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21687
./strace-static-x86_64: Process 21687 attached
[pid 21687] set_robust_list(0x5555589fe660, 24) = 0
[pid 21687] chdir("./20832")            = 0
[pid 21687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21687] setpgid(0, 0)               = 0
[pid 21687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21687] write(3, "1000", 4)         = 4
[pid 21687] close(3)                    = 0
[pid 21687] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21687] write(1, "executing program\n", 18executing program
) = 18
[pid 21687] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21687] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21687] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21687] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21687] exit_group(0)               = ?
[pid 21687] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21687, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20832", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20832", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20832/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20832/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20832/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20832")                        = 0
mkdir("./20833", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21688 attached
, child_tidptr=0x5555589fe650) = 21688
[pid 21688] set_robust_list(0x5555589fe660, 24) = 0
[pid 21688] chdir("./20833")            = 0
[pid 21688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21688] setpgid(0, 0)               = 0
[pid 21688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21688] write(3, "1000", 4)         = 4
[pid 21688] close(3)                    = 0
[pid 21688] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21688] write(1, "executing program\n", 18executing program
) = 18
[pid 21688] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21688] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21688] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21688] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21688] exit_group(0)               = ?
[pid 21688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20833", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20833", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20833/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20833/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20833/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20833")                        = 0
mkdir("./20834", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21689
./strace-static-x86_64: Process 21689 attached
[pid 21689] set_robust_list(0x5555589fe660, 24) = 0
[pid 21689] chdir("./20834")            = 0
[pid 21689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21689] setpgid(0, 0)               = 0
[pid 21689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21689] write(3, "1000", 4)         = 4
[pid 21689] close(3)                    = 0
[pid 21689] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21689] write(1, "executing program\n", 18executing program
) = 18
[pid 21689] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21689] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21689] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21689] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21689] exit_group(0)               = ?
[pid 21689] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21689, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20834", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20834", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20834/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20834/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20834/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20834")                        = 0
mkdir("./20835", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21691
./strace-static-x86_64: Process 21691 attached
[pid 21691] set_robust_list(0x5555589fe660, 24) = 0
[pid 21691] chdir("./20835")            = 0
[pid 21691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21691] setpgid(0, 0)               = 0
[pid 21691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21691] write(3, "1000", 4)         = 4
[pid 21691] close(3)                    = 0
[pid 21691] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21691] write(1, "executing program\n", 18executing program
) = 18
[pid 21691] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21691] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21691] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21691] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21691] exit_group(0)               = ?
[pid 21691] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21691, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20835", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20835", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20835/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20835/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20835/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20835")                        = 0
mkdir("./20836", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21692 attached
, child_tidptr=0x5555589fe650) = 21692
[pid 21692] set_robust_list(0x5555589fe660, 24) = 0
[pid 21692] chdir("./20836")            = 0
[pid 21692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21692] setpgid(0, 0)               = 0
[pid 21692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21692] write(3, "1000", 4)         = 4
[pid 21692] close(3)                    = 0
[pid 21692] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21692] write(1, "executing program\n", 18executing program
) = 18
[pid 21692] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21692] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21692] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21692] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21692] exit_group(0)               = ?
[pid 21692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20836", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20836", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20836/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20836/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20836/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20836")                        = 0
mkdir("./20837", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21693 attached
, child_tidptr=0x5555589fe650) = 21693
[pid 21693] set_robust_list(0x5555589fe660, 24) = 0
[pid 21693] chdir("./20837")            = 0
[pid 21693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21693] setpgid(0, 0)               = 0
[pid 21693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21693] write(3, "1000", 4)         = 4
[pid 21693] close(3)                    = 0
[pid 21693] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21693] write(1, "executing program\n", 18) = 18
[pid 21693] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21693] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21693] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21693] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21693] exit_group(0)               = ?
[pid 21693] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21693, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20837", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20837", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20837/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20837/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20837/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20837")                        = 0
mkdir("./20838", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21694
./strace-static-x86_64: Process 21694 attached
[pid 21694] set_robust_list(0x5555589fe660, 24) = 0
[pid 21694] chdir("./20838")            = 0
[pid 21694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21694] setpgid(0, 0)               = 0
[pid 21694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21694] write(3, "1000", 4)         = 4
[pid 21694] close(3)                    = 0
[pid 21694] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21694] write(1, "executing program\n", 18executing program
) = 18
[pid 21694] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21694] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21694] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21694] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21694] exit_group(0)               = ?
[pid 21694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20838", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20838", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20838/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20838/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20838/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20838")                        = 0
mkdir("./20839", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21695 attached
, child_tidptr=0x5555589fe650) = 21695
[pid 21695] set_robust_list(0x5555589fe660, 24) = 0
[pid 21695] chdir("./20839")            = 0
[pid 21695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21695] setpgid(0, 0)               = 0
[pid 21695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21695] write(3, "1000", 4)         = 4
[pid 21695] close(3)                    = 0
[pid 21695] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21695] write(1, "executing program\n", 18executing program
) = 18
[pid 21695] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21695] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21695] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21695] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21695] exit_group(0)               = ?
[pid 21695] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21695, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20839", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20839", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20839/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20839/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20839/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20839")                        = 0
mkdir("./20840", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21696
./strace-static-x86_64: Process 21696 attached
[pid 21696] set_robust_list(0x5555589fe660, 24) = 0
[pid 21696] chdir("./20840")            = 0
[pid 21696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21696] setpgid(0, 0)               = 0
[pid 21696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21696] write(3, "1000", 4)         = 4
[pid 21696] close(3)                    = 0
[pid 21696] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21696] write(1, "executing program\n", 18executing program
) = 18
[pid 21696] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21696] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21696] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21696] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21696] exit_group(0)               = ?
[pid 21696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20840", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20840", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20840/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20840/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20840/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20840")                        = 0
mkdir("./20841", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21697
./strace-static-x86_64: Process 21697 attached
[pid 21697] set_robust_list(0x5555589fe660, 24) = 0
[pid 21697] chdir("./20841")            = 0
[pid 21697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21697] setpgid(0, 0)               = 0
[pid 21697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21697] write(3, "1000", 4)         = 4
[pid 21697] close(3)                    = 0
[pid 21697] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21697] write(1, "executing program\n", 18executing program
) = 18
[pid 21697] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21697] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21697] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21697] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21697] exit_group(0)               = ?
[pid 21697] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21697, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20841", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20841", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20841/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20841/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20841/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20841")                        = 0
mkdir("./20842", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21698
./strace-static-x86_64: Process 21698 attached
[pid 21698] set_robust_list(0x5555589fe660, 24) = 0
[pid 21698] chdir("./20842")            = 0
[pid 21698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21698] setpgid(0, 0)               = 0
[pid 21698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21698] write(3, "1000", 4)         = 4
[pid 21698] close(3)                    = 0
[pid 21698] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21698] write(1, "executing program\n", 18) = 18
[pid 21698] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21698] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21698] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21698] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21698] exit_group(0)               = ?
[pid 21698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20842", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20842", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20842/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20842/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20842/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20842")                        = 0
mkdir("./20843", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21699
./strace-static-x86_64: Process 21699 attached
[pid 21699] set_robust_list(0x5555589fe660, 24) = 0
[pid 21699] chdir("./20843")            = 0
[pid 21699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21699] setpgid(0, 0)               = 0
[pid 21699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21699] write(3, "1000", 4)         = 4
[pid 21699] close(3)                    = 0
[pid 21699] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21699] write(1, "executing program\n", 18executing program
) = 18
[pid 21699] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21699] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21699] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21699] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21699] exit_group(0)               = ?
[pid 21699] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21699, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20843", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20843", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20843/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20843/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20843/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20843")                        = 0
mkdir("./20844", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21700
./strace-static-x86_64: Process 21700 attached
[pid 21700] set_robust_list(0x5555589fe660, 24) = 0
[pid 21700] chdir("./20844")            = 0
[pid 21700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21700] setpgid(0, 0)               = 0
[pid 21700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21700] write(3, "1000", 4)         = 4
[pid 21700] close(3)                    = 0
[pid 21700] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21700] write(1, "executing program\n", 18) = 18
[pid 21700] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21700] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21700] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21700] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21700] exit_group(0)               = ?
[pid 21700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20844", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20844", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20844/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20844/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20844/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20844")                        = 0
mkdir("./20845", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21701
./strace-static-x86_64: Process 21701 attached
[pid 21701] set_robust_list(0x5555589fe660, 24) = 0
[pid 21701] chdir("./20845")            = 0
[pid 21701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21701] setpgid(0, 0)               = 0
[pid 21701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21701] write(3, "1000", 4)         = 4
[pid 21701] close(3)                    = 0
[pid 21701] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21701] write(1, "executing program\n", 18) = 18
[pid 21701] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21701] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21701] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21701] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21701] exit_group(0)               = ?
[pid 21701] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21701, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20845", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20845", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20845/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20845/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20845/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20845")                        = 0
mkdir("./20846", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21702
./strace-static-x86_64: Process 21702 attached
[pid 21702] set_robust_list(0x5555589fe660, 24) = 0
[pid 21702] chdir("./20846")            = 0
[pid 21702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21702] setpgid(0, 0)               = 0
[pid 21702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21702] write(3, "1000", 4)         = 4
[pid 21702] close(3)                    = 0
[pid 21702] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21702] write(1, "executing program\n", 18executing program
) = 18
[pid 21702] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21702] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21702] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21702] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21702] exit_group(0)               = ?
[pid 21702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20846", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20846", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20846/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20846/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20846/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20846")                        = 0
mkdir("./20847", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21703
./strace-static-x86_64: Process 21703 attached
[pid 21703] set_robust_list(0x5555589fe660, 24) = 0
[pid 21703] chdir("./20847")            = 0
[pid 21703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21703] setpgid(0, 0)               = 0
[pid 21703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21703] write(3, "1000", 4)         = 4
[pid 21703] close(3)                    = 0
[pid 21703] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21703] write(1, "executing program\n", 18) = 18
[pid 21703] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21703] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21703] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21703] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21703] exit_group(0)               = ?
[pid 21703] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21703, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20847", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20847", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20847/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20847/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20847/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20847")                        = 0
mkdir("./20848", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21704
./strace-static-x86_64: Process 21704 attached
[pid 21704] set_robust_list(0x5555589fe660, 24) = 0
[pid 21704] chdir("./20848")            = 0
[pid 21704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21704] setpgid(0, 0)               = 0
[pid 21704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21704] write(3, "1000", 4)         = 4
[pid 21704] close(3)                    = 0
[pid 21704] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21704] write(1, "executing program\n", 18executing program
) = 18
[pid 21704] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21704] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21704] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21704] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21704] exit_group(0)               = ?
[pid 21704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20848", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20848", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20848/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20848/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20848/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20848")                        = 0
mkdir("./20849", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21705 attached
, child_tidptr=0x5555589fe650) = 21705
[pid 21705] set_robust_list(0x5555589fe660, 24) = 0
[pid 21705] chdir("./20849")            = 0
[pid 21705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21705] setpgid(0, 0)               = 0
[pid 21705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21705] write(3, "1000", 4)         = 4
[pid 21705] close(3)                    = 0
[pid 21705] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21705] write(1, "executing program\n", 18executing program
) = 18
[pid 21705] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21705] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21705] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21705] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21705] exit_group(0)               = ?
[pid 21705] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21705, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20849", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20849", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20849/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20849/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20849/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20849")                        = 0
mkdir("./20850", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21706
./strace-static-x86_64: Process 21706 attached
[pid 21706] set_robust_list(0x5555589fe660, 24) = 0
[pid 21706] chdir("./20850")            = 0
[pid 21706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21706] setpgid(0, 0)               = 0
[pid 21706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21706] write(3, "1000", 4)         = 4
[pid 21706] close(3)                    = 0
[pid 21706] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21706] write(1, "executing program\n", 18) = 18
[pid 21706] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21706] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21706] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21706] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21706] exit_group(0)               = ?
[pid 21706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20850", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20850", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20850/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20850/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20850/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20850")                        = 0
mkdir("./20851", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21707
./strace-static-x86_64: Process 21707 attached
[pid 21707] set_robust_list(0x5555589fe660, 24) = 0
[pid 21707] chdir("./20851")            = 0
[pid 21707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21707] setpgid(0, 0)               = 0
[pid 21707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21707] write(3, "1000", 4)         = 4
[pid 21707] close(3)                    = 0
[pid 21707] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21707] write(1, "executing program\n", 18executing program
) = 18
[pid 21707] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21707] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21707] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21707] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21707] exit_group(0)               = ?
[pid 21707] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21707, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20851", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20851", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20851/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20851/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20851/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20851")                        = 0
mkdir("./20852", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21708
./strace-static-x86_64: Process 21708 attached
[pid 21708] set_robust_list(0x5555589fe660, 24) = 0
[pid 21708] chdir("./20852")            = 0
[pid 21708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21708] setpgid(0, 0)               = 0
[pid 21708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21708] write(3, "1000", 4)         = 4
[pid 21708] close(3)                    = 0
[pid 21708] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21708] write(1, "executing program\n", 18executing program
) = 18
[pid 21708] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21708] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21708] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21708] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21708] exit_group(0)               = ?
[pid 21708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20852", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20852", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20852/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20852/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20852/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20852")                        = 0
mkdir("./20853", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21709 attached
, child_tidptr=0x5555589fe650) = 21709
[pid 21709] set_robust_list(0x5555589fe660, 24) = 0
[pid 21709] chdir("./20853")            = 0
[pid 21709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21709] setpgid(0, 0)               = 0
[pid 21709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21709] write(3, "1000", 4)         = 4
[pid 21709] close(3)                    = 0
[pid 21709] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21709] write(1, "executing program\n", 18executing program
) = 18
[pid 21709] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21709] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21709] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21709] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21709] exit_group(0)               = ?
[pid 21709] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21709, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20853", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20853", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20853/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20853/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20853/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20853")                        = 0
mkdir("./20854", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21710 attached
, child_tidptr=0x5555589fe650) = 21710
[pid 21710] set_robust_list(0x5555589fe660, 24) = 0
[pid 21710] chdir("./20854")            = 0
[pid 21710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21710] setpgid(0, 0)               = 0
[pid 21710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21710] write(3, "1000", 4)         = 4
[pid 21710] close(3)                    = 0
[pid 21710] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21710] write(1, "executing program\n", 18) = 18
[pid 21710] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21710] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21710] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21710] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21710] exit_group(0)               = ?
[pid 21710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20854", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20854", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20854/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20854/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20854/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20854")                        = 0
mkdir("./20855", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21711 attached
, child_tidptr=0x5555589fe650) = 21711
[pid 21711] set_robust_list(0x5555589fe660, 24) = 0
[pid 21711] chdir("./20855")            = 0
[pid 21711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21711] setpgid(0, 0)               = 0
[pid 21711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21711] write(3, "1000", 4)         = 4
[pid 21711] close(3)                    = 0
[pid 21711] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21711] write(1, "executing program\n", 18) = 18
[pid 21711] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21711] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21711] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21711] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21711] exit_group(0)               = ?
[pid 21711] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21711, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20855", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20855", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20855/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20855/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20855/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20855")                        = 0
mkdir("./20856", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21712 attached
, child_tidptr=0x5555589fe650) = 21712
[pid 21712] set_robust_list(0x5555589fe660, 24) = 0
[pid 21712] chdir("./20856")            = 0
[pid 21712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21712] setpgid(0, 0)               = 0
[pid 21712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21712] write(3, "1000", 4)         = 4
[pid 21712] close(3)                    = 0
[pid 21712] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21712] write(1, "executing program\n", 18executing program
) = 18
[pid 21712] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21712] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21712] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21712] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21712] exit_group(0)               = ?
[pid 21712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20856", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20856", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20856/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20856/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20856/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20856")                        = 0
mkdir("./20857", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21713
./strace-static-x86_64: Process 21713 attached
[pid 21713] set_robust_list(0x5555589fe660, 24) = 0
[pid 21713] chdir("./20857")            = 0
[pid 21713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21713] setpgid(0, 0)               = 0
[pid 21713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21713] write(3, "1000", 4)         = 4
[pid 21713] close(3)                    = 0
[pid 21713] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21713] write(1, "executing program\n", 18executing program
) = 18
[pid 21713] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21713] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21713] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21713] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21713] exit_group(0)               = ?
[pid 21713] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21713, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20857", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20857", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20857/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20857/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20857/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20857")                        = 0
mkdir("./20858", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21714
./strace-static-x86_64: Process 21714 attached
[pid 21714] set_robust_list(0x5555589fe660, 24) = 0
[pid 21714] chdir("./20858")            = 0
[pid 21714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21714] setpgid(0, 0)               = 0
[pid 21714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21714] write(3, "1000", 4)         = 4
[pid 21714] close(3)                    = 0
[pid 21714] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21714] write(1, "executing program\n", 18executing program
) = 18
[pid 21714] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21714] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21714] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21714] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21714] exit_group(0)               = ?
[pid 21714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20858", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20858", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20858/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20858/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20858/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20858")                        = 0
mkdir("./20859", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21715 attached
, child_tidptr=0x5555589fe650) = 21715
[pid 21715] set_robust_list(0x5555589fe660, 24) = 0
[pid 21715] chdir("./20859")            = 0
[pid 21715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21715] setpgid(0, 0)               = 0
[pid 21715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21715] write(3, "1000", 4)         = 4
[pid 21715] close(3)                    = 0
[pid 21715] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21715] write(1, "executing program\n", 18executing program
) = 18
[pid 21715] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21715] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21715] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21715] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21715] exit_group(0)               = ?
[pid 21715] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21715, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20859", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20859", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20859/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20859/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20859/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20859")                        = 0
mkdir("./20860", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21716
./strace-static-x86_64: Process 21716 attached
[pid 21716] set_robust_list(0x5555589fe660, 24) = 0
[pid 21716] chdir("./20860")            = 0
[pid 21716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21716] setpgid(0, 0)               = 0
[pid 21716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21716] write(3, "1000", 4)         = 4
[pid 21716] close(3)                    = 0
[pid 21716] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21716] write(1, "executing program\n", 18executing program
) = 18
[pid 21716] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21716] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21716] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21716] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21716] exit_group(0)               = ?
[pid 21716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20860", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20860", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20860/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20860/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20860/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20860")                        = 0
mkdir("./20861", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21717
./strace-static-x86_64: Process 21717 attached
[pid 21717] set_robust_list(0x5555589fe660, 24) = 0
[pid 21717] chdir("./20861")            = 0
[pid 21717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21717] setpgid(0, 0)               = 0
[pid 21717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21717] write(3, "1000", 4)         = 4
[pid 21717] close(3)                    = 0
[pid 21717] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21717] write(1, "executing program\n", 18executing program
) = 18
[pid 21717] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21717] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21717] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21717] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21717] exit_group(0)               = ?
[pid 21717] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21717, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20861", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20861", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20861/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20861/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20861/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20861")                        = 0
mkdir("./20862", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21718
./strace-static-x86_64: Process 21718 attached
[pid 21718] set_robust_list(0x5555589fe660, 24) = 0
[pid 21718] chdir("./20862")            = 0
[pid 21718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21718] setpgid(0, 0)               = 0
[pid 21718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21718] write(3, "1000", 4)         = 4
[pid 21718] close(3)                    = 0
[pid 21718] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21718] write(1, "executing program\n", 18executing program
) = 18
[pid 21718] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21718] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21718] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21718] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21718] exit_group(0)               = ?
[pid 21718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20862", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20862", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20862/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20862/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20862/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20862")                        = 0
mkdir("./20863", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21719
./strace-static-x86_64: Process 21719 attached
[pid 21719] set_robust_list(0x5555589fe660, 24) = 0
[pid 21719] chdir("./20863")            = 0
[pid 21719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21719] setpgid(0, 0)               = 0
[pid 21719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21719] write(3, "1000", 4)         = 4
[pid 21719] close(3)                    = 0
[pid 21719] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21719] write(1, "executing program\n", 18executing program
) = 18
[pid 21719] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21719] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21719] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21719] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21719] exit_group(0)               = ?
[pid 21719] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21719, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20863", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20863", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20863/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20863/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20863/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20863")                        = 0
mkdir("./20864", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21720
./strace-static-x86_64: Process 21720 attached
[pid 21720] set_robust_list(0x5555589fe660, 24) = 0
[pid 21720] chdir("./20864")            = 0
[pid 21720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21720] setpgid(0, 0)               = 0
[pid 21720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21720] write(3, "1000", 4)         = 4
[pid 21720] close(3)                    = 0
[pid 21720] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21720] write(1, "executing program\n", 18executing program
) = 18
[pid 21720] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21720] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21720] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21720] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21720] exit_group(0)               = ?
[pid 21720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20864", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20864", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20864/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20864/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20864/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20864")                        = 0
mkdir("./20865", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21721
./strace-static-x86_64: Process 21721 attached
[pid 21721] set_robust_list(0x5555589fe660, 24) = 0
[pid 21721] chdir("./20865")            = 0
[pid 21721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21721] setpgid(0, 0)               = 0
[pid 21721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21721] write(3, "1000", 4)         = 4
[pid 21721] close(3)                    = 0
[pid 21721] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21721] write(1, "executing program\n", 18) = 18
[pid 21721] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21721] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21721] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21721] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21721] exit_group(0)               = ?
[pid 21721] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21721, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20865", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20865", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20865/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20865/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20865/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20865")                        = 0
mkdir("./20866", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21722
./strace-static-x86_64: Process 21722 attached
[pid 21722] set_robust_list(0x5555589fe660, 24) = 0
[pid 21722] chdir("./20866")            = 0
[pid 21722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21722] setpgid(0, 0)               = 0
[pid 21722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21722] write(3, "1000", 4)         = 4
[pid 21722] close(3)                    = 0
[pid 21722] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21722] write(1, "executing program\n", 18executing program
) = 18
[pid 21722] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21722] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21722] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21722] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21722] exit_group(0)               = ?
[pid 21722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20866", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20866", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20866/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20866/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20866/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20866")                        = 0
mkdir("./20867", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21723
./strace-static-x86_64: Process 21723 attached
[pid 21723] set_robust_list(0x5555589fe660, 24) = 0
[pid 21723] chdir("./20867")            = 0
[pid 21723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21723] setpgid(0, 0)               = 0
[pid 21723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21723] write(3, "1000", 4)         = 4
[pid 21723] close(3)                    = 0
[pid 21723] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21723] write(1, "executing program\n", 18executing program
) = 18
[pid 21723] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21723] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21723] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21723] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21723] exit_group(0)               = ?
[pid 21723] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21723, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20867", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20867", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20867/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20867/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20867/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20867")                        = 0
mkdir("./20868", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21724
./strace-static-x86_64: Process 21724 attached
[pid 21724] set_robust_list(0x5555589fe660, 24) = 0
[pid 21724] chdir("./20868")            = 0
[pid 21724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21724] setpgid(0, 0)               = 0
[pid 21724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21724] write(3, "1000", 4)         = 4
[pid 21724] close(3)                    = 0
[pid 21724] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21724] write(1, "executing program\n", 18executing program
) = 18
[pid 21724] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21724] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21724] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21724] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21724] exit_group(0)               = ?
[pid 21724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20868", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20868", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20868/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20868/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20868/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20868")                        = 0
mkdir("./20869", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21725 attached
, child_tidptr=0x5555589fe650) = 21725
[pid 21725] set_robust_list(0x5555589fe660, 24) = 0
[pid 21725] chdir("./20869")            = 0
[pid 21725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21725] setpgid(0, 0)               = 0
[pid 21725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21725] write(3, "1000", 4)         = 4
[pid 21725] close(3)                    = 0
[pid 21725] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21725] write(1, "executing program\n", 18executing program
) = 18
[pid 21725] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21725] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21725] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21725] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21725] exit_group(0)               = ?
[pid 21725] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21725, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20869", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20869", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20869/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20869/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20869/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20869")                        = 0
mkdir("./20870", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21726
./strace-static-x86_64: Process 21726 attached
[pid 21726] set_robust_list(0x5555589fe660, 24) = 0
[pid 21726] chdir("./20870")            = 0
[pid 21726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21726] setpgid(0, 0)               = 0
[pid 21726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21726] write(3, "1000", 4)         = 4
[pid 21726] close(3)                    = 0
[pid 21726] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21726] write(1, "executing program\n", 18) = 18
[pid 21726] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21726] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21726] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21726] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21726] exit_group(0)               = ?
[pid 21726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20870", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20870", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20870/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20870/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20870/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20870")                        = 0
mkdir("./20871", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21727
./strace-static-x86_64: Process 21727 attached
[pid 21727] set_robust_list(0x5555589fe660, 24) = 0
[pid 21727] chdir("./20871")            = 0
[pid 21727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21727] setpgid(0, 0)               = 0
[pid 21727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21727] write(3, "1000", 4)         = 4
[pid 21727] close(3)                    = 0
[pid 21727] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21727] write(1, "executing program\n", 18executing program
) = 18
[pid 21727] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21727] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21727] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21727] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21727] exit_group(0)               = ?
[pid 21727] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21727, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20871", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20871", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20871/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20871/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20871/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20871")                        = 0
mkdir("./20872", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21728 attached
, child_tidptr=0x5555589fe650) = 21728
[pid 21728] set_robust_list(0x5555589fe660, 24) = 0
[pid 21728] chdir("./20872")            = 0
[pid 21728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21728] setpgid(0, 0)               = 0
[pid 21728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21728] write(3, "1000", 4)         = 4
[pid 21728] close(3)                    = 0
[pid 21728] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21728] write(1, "executing program\n", 18) = 18
[pid 21728] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21728] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21728] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21728] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21728] exit_group(0)               = ?
[pid 21728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21728, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20872", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20872", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20872/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20872/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20872/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20872")                        = 0
mkdir("./20873", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21729 attached
, child_tidptr=0x5555589fe650) = 21729
[pid 21729] set_robust_list(0x5555589fe660, 24) = 0
[pid 21729] chdir("./20873")            = 0
[pid 21729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21729] setpgid(0, 0)               = 0
[pid 21729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21729] write(3, "1000", 4)         = 4
[pid 21729] close(3)                    = 0
[pid 21729] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21729] write(1, "executing program\n", 18executing program
) = 18
[pid 21729] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21729] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21729] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21729] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21729] exit_group(0)               = ?
[pid 21729] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21729, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20873", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20873", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20873/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20873/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20873/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20873")                        = 0
mkdir("./20874", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21730
./strace-static-x86_64: Process 21730 attached
[pid 21730] set_robust_list(0x5555589fe660, 24) = 0
[pid 21730] chdir("./20874")            = 0
[pid 21730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21730] setpgid(0, 0)               = 0
[pid 21730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21730] write(3, "1000", 4)         = 4
[pid 21730] close(3)                    = 0
[pid 21730] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21730] write(1, "executing program\n", 18executing program
) = 18
[pid 21730] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21730] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21730] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21730] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21730] exit_group(0)               = ?
[pid 21730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20874", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20874", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20874/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20874/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20874/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20874")                        = 0
mkdir("./20875", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21731
./strace-static-x86_64: Process 21731 attached
[pid 21731] set_robust_list(0x5555589fe660, 24) = 0
[pid 21731] chdir("./20875")            = 0
[pid 21731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21731] setpgid(0, 0)               = 0
[pid 21731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21731] write(3, "1000", 4)         = 4
[pid 21731] close(3)                    = 0
[pid 21731] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21731] write(1, "executing program\n", 18executing program
) = 18
[pid 21731] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21731] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21731] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21731] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21731] exit_group(0)               = ?
[pid 21731] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21731, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20875", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20875", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20875/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20875/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20875/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20875")                        = 0
mkdir("./20876", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21732
./strace-static-x86_64: Process 21732 attached
[pid 21732] set_robust_list(0x5555589fe660, 24) = 0
[pid 21732] chdir("./20876")            = 0
[pid 21732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21732] setpgid(0, 0)               = 0
[pid 21732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21732] write(3, "1000", 4)         = 4
[pid 21732] close(3)                    = 0
[pid 21732] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21732] write(1, "executing program\n", 18executing program
) = 18
[pid 21732] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21732] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21732] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21732] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21732] exit_group(0)               = ?
[pid 21732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20876", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20876", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20876/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20876/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20876/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20876")                        = 0
mkdir("./20877", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21733 attached
, child_tidptr=0x5555589fe650) = 21733
[pid 21733] set_robust_list(0x5555589fe660, 24) = 0
[pid 21733] chdir("./20877")            = 0
[pid 21733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21733] setpgid(0, 0)               = 0
[pid 21733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21733] write(3, "1000", 4)         = 4
[pid 21733] close(3)                    = 0
[pid 21733] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21733] write(1, "executing program\n", 18executing program
) = 18
[pid 21733] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21733] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21733] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21733] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21733] exit_group(0)               = ?
[pid 21733] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21733, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20877", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20877", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20877/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20877/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20877/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20877")                        = 0
mkdir("./20878", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21734
./strace-static-x86_64: Process 21734 attached
[pid 21734] set_robust_list(0x5555589fe660, 24) = 0
[pid 21734] chdir("./20878")            = 0
[pid 21734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21734] setpgid(0, 0)               = 0
[pid 21734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21734] write(3, "1000", 4)         = 4
[pid 21734] close(3)                    = 0
executing program
[pid 21734] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21734] write(1, "executing program\n", 18) = 18
[pid 21734] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21734] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21734] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21734] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21734] exit_group(0)               = ?
[pid 21734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20878", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20878", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20878/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20878/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20878/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20878")                        = 0
mkdir("./20879", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21735
./strace-static-x86_64: Process 21735 attached
[pid 21735] set_robust_list(0x5555589fe660, 24) = 0
[pid 21735] chdir("./20879")            = 0
[pid 21735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21735] setpgid(0, 0)               = 0
[pid 21735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21735] write(3, "1000", 4)         = 4
[pid 21735] close(3)                    = 0
[pid 21735] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21735] write(1, "executing program\n", 18) = 18
[pid 21735] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21735] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21735] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21735] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21735] exit_group(0)               = ?
[pid 21735] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21735, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20879", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20879", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20879/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20879/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20879/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20879")                        = 0
mkdir("./20880", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21736
./strace-static-x86_64: Process 21736 attached
[pid 21736] set_robust_list(0x5555589fe660, 24) = 0
[pid 21736] chdir("./20880")            = 0
[pid 21736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21736] setpgid(0, 0)               = 0
[pid 21736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21736] write(3, "1000", 4)         = 4
[pid 21736] close(3)                    = 0
[pid 21736] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21736] write(1, "executing program\n", 18executing program
) = 18
[pid 21736] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21736] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21736] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21736] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21736] exit_group(0)               = ?
[pid 21736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20880", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20880", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20880/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20880/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20880/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20880")                        = 0
mkdir("./20881", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21737
./strace-static-x86_64: Process 21737 attached
[pid 21737] set_robust_list(0x5555589fe660, 24) = 0
[pid 21737] chdir("./20881")            = 0
[pid 21737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21737] setpgid(0, 0)               = 0
[pid 21737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21737] write(3, "1000", 4)         = 4
[pid 21737] close(3)                    = 0
[pid 21737] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21737] write(1, "executing program\n", 18executing program
) = 18
[pid 21737] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21737] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21737] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21737] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21737] exit_group(0)               = ?
[pid 21737] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21737, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20881", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20881", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20881/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20881/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20881/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20881")                        = 0
mkdir("./20882", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21738
./strace-static-x86_64: Process 21738 attached
[pid 21738] set_robust_list(0x5555589fe660, 24) = 0
[pid 21738] chdir("./20882")            = 0
[pid 21738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21738] setpgid(0, 0)               = 0
[pid 21738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21738] write(3, "1000", 4)         = 4
[pid 21738] close(3)                    = 0
[pid 21738] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21738] write(1, "executing program\n", 18) = 18
[pid 21738] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21738] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21738] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21738] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21738] exit_group(0)               = ?
[pid 21738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20882", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20882", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20882/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20882/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20882/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20882")                        = 0
mkdir("./20883", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21739
./strace-static-x86_64: Process 21739 attached
[pid 21739] set_robust_list(0x5555589fe660, 24) = 0
[pid 21739] chdir("./20883")            = 0
[pid 21739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21739] setpgid(0, 0)               = 0
[pid 21739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21739] write(3, "1000", 4)         = 4
[pid 21739] close(3)                    = 0
[pid 21739] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21739] write(1, "executing program\n", 18executing program
) = 18
[pid 21739] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21739] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21739] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21739] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21739] exit_group(0)               = ?
[pid 21739] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21739, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20883", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20883", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20883/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20883/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20883/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20883")                        = 0
mkdir("./20884", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21740
./strace-static-x86_64: Process 21740 attached
[pid 21740] set_robust_list(0x5555589fe660, 24) = 0
[pid 21740] chdir("./20884")            = 0
[pid 21740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21740] setpgid(0, 0)               = 0
[pid 21740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21740] write(3, "1000", 4)         = 4
[pid 21740] close(3)                    = 0
[pid 21740] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21740] write(1, "executing program\n", 18executing program
) = 18
[pid 21740] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21740] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21740] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21740] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21740] exit_group(0)               = ?
[pid 21740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20884", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20884", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20884/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20884/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20884/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20884")                        = 0
mkdir("./20885", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21741
./strace-static-x86_64: Process 21741 attached
[pid 21741] set_robust_list(0x5555589fe660, 24) = 0
[pid 21741] chdir("./20885")            = 0
[pid 21741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21741] setpgid(0, 0)               = 0
[pid 21741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21741] write(3, "1000", 4)         = 4
[pid 21741] close(3executing program
)                    = 0
[pid 21741] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21741] write(1, "executing program\n", 18) = 18
[pid 21741] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21741] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21741] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21741] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21741] exit_group(0)               = ?
[pid 21741] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21741, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20885", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20885", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20885/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20885/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20885/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20885")                        = 0
mkdir("./20886", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21742
./strace-static-x86_64: Process 21742 attached
[pid 21742] set_robust_list(0x5555589fe660, 24) = 0
[pid 21742] chdir("./20886")            = 0
[pid 21742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21742] setpgid(0, 0)               = 0
[pid 21742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21742] write(3, "1000", 4)         = 4
[pid 21742] close(3)                    = 0
[pid 21742] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21742] write(1, "executing program\n", 18executing program
) = 18
[pid 21742] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21742] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21742] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21742] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21742] exit_group(0)               = ?
[pid 21742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20886", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20886", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20886/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20886/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20886/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20886")                        = 0
mkdir("./20887", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21743
./strace-static-x86_64: Process 21743 attached
[pid 21743] set_robust_list(0x5555589fe660, 24) = 0
[pid 21743] chdir("./20887")            = 0
[pid 21743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21743] setpgid(0, 0)               = 0
[pid 21743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21743] write(3, "1000", 4)         = 4
[pid 21743] close(3)                    = 0
[pid 21743] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21743] write(1, "executing program\n", 18executing program
) = 18
[pid 21743] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21743] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21743] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21743] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21743] exit_group(0)               = ?
[pid 21743] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21743, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20887", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20887", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20887/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20887/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20887/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20887")                        = 0
mkdir("./20888", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21744
./strace-static-x86_64: Process 21744 attached
[pid 21744] set_robust_list(0x5555589fe660, 24) = 0
[pid 21744] chdir("./20888")            = 0
[pid 21744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21744] setpgid(0, 0)               = 0
[pid 21744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21744] write(3, "1000", 4)         = 4
[pid 21744] close(3)                    = 0
[pid 21744] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21744] write(1, "executing program\n", 18) = 18
[pid 21744] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21744] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21744] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21744] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21744] exit_group(0)               = ?
[pid 21744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20888", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20888", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20888/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20888/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20888/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20888")                        = 0
mkdir("./20889", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21745
./strace-static-x86_64: Process 21745 attached
[pid 21745] set_robust_list(0x5555589fe660, 24) = 0
[pid 21745] chdir("./20889")            = 0
[pid 21745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21745] setpgid(0, 0)               = 0
[pid 21745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21745] write(3, "1000", 4)         = 4
[pid 21745] close(3)                    = 0
[pid 21745] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21745] write(1, "executing program\n", 18executing program
) = 18
[pid 21745] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21745] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21745] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21745] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21745] exit_group(0)               = ?
[pid 21745] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21745, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20889", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20889", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20889/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20889/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20889/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20889")                        = 0
mkdir("./20890", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21746
./strace-static-x86_64: Process 21746 attached
[pid 21746] set_robust_list(0x5555589fe660, 24) = 0
[pid 21746] chdir("./20890")            = 0
[pid 21746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21746] setpgid(0, 0)               = 0
[pid 21746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21746] write(3, "1000", 4)         = 4
[pid 21746] close(3)                    = 0
[pid 21746] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21746] write(1, "executing program\n", 18executing program
) = 18
[pid 21746] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21746] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21746] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21746] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21746] exit_group(0)               = ?
[pid 21746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20890", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20890", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20890/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20890/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20890/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20890")                        = 0
mkdir("./20891", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21747 attached
, child_tidptr=0x5555589fe650) = 21747
[pid 21747] set_robust_list(0x5555589fe660, 24) = 0
[pid 21747] chdir("./20891")            = 0
[pid 21747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21747] setpgid(0, 0)               = 0
[pid 21747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21747] write(3, "1000", 4)         = 4
[pid 21747] close(3)                    = 0
[pid 21747] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21747] write(1, "executing program\n", 18executing program
) = 18
[pid 21747] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21747] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21747] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21747] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21747] exit_group(0)               = ?
[pid 21747] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21747, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20891", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20891", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20891/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20891/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20891/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20891")                        = 0
mkdir("./20892", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21748
./strace-static-x86_64: Process 21748 attached
[pid 21748] set_robust_list(0x5555589fe660, 24) = 0
[pid 21748] chdir("./20892")            = 0
[pid 21748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21748] setpgid(0, 0)               = 0
[pid 21748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21748] write(3, "1000", 4)         = 4
[pid 21748] close(3)                    = 0
[pid 21748] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21748] write(1, "executing program\n", 18executing program
) = 18
[pid 21748] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21748] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21748] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21748] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21748] exit_group(0)               = ?
[pid 21748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20892", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20892", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20892/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20892/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20892/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20892")                        = 0
mkdir("./20893", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21749 attached
, child_tidptr=0x5555589fe650) = 21749
[pid 21749] set_robust_list(0x5555589fe660, 24) = 0
[pid 21749] chdir("./20893")            = 0
[pid 21749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21749] setpgid(0, 0)               = 0
[pid 21749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21749] write(3, "1000", 4)         = 4
[pid 21749] close(3)                    = 0
[pid 21749] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21749] write(1, "executing program\n", 18executing program
) = 18
[pid 21749] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21749] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21749] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21749] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21749] exit_group(0)               = ?
[pid 21749] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21749, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20893", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20893", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20893/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20893/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20893/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20893")                        = 0
mkdir("./20894", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21750
./strace-static-x86_64: Process 21750 attached
[pid 21750] set_robust_list(0x5555589fe660, 24) = 0
[pid 21750] chdir("./20894")            = 0
[pid 21750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21750] setpgid(0, 0)               = 0
[pid 21750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21750] write(3, "1000", 4)         = 4
[pid 21750] close(3)                    = 0
[pid 21750] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21750] write(1, "executing program\n", 18executing program
) = 18
[pid 21750] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21750] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21750] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21750] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21750] exit_group(0)               = ?
[pid 21750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20894", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20894", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20894/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20894/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20894/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20894")                        = 0
mkdir("./20895", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21751 attached
, child_tidptr=0x5555589fe650) = 21751
[pid 21751] set_robust_list(0x5555589fe660, 24) = 0
[pid 21751] chdir("./20895")            = 0
[pid 21751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21751] setpgid(0, 0)               = 0
[pid 21751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21751] write(3, "1000", 4)         = 4
[pid 21751] close(3)                    = 0
[pid 21751] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21751] write(1, "executing program\n", 18executing program
) = 18
[pid 21751] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21751] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21751] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21751] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21751] exit_group(0)               = ?
[pid 21751] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21751, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20895", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20895", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20895/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20895/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20895/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20895")                        = 0
mkdir("./20896", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21752
./strace-static-x86_64: Process 21752 attached
[pid 21752] set_robust_list(0x5555589fe660, 24) = 0
[pid 21752] chdir("./20896")            = 0
[pid 21752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21752] setpgid(0, 0)               = 0
[pid 21752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21752] write(3, "1000", 4)         = 4
[pid 21752] close(3)                    = 0
[pid 21752] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21752] write(1, "executing program\n", 18executing program
) = 18
[pid 21752] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21752] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21752] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21752] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21752] exit_group(0)               = ?
[pid 21752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20896", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20896", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20896/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20896/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20896/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20896")                        = 0
mkdir("./20897", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21753 attached
, child_tidptr=0x5555589fe650) = 21753
[pid 21753] set_robust_list(0x5555589fe660, 24) = 0
[pid 21753] chdir("./20897")            = 0
[pid 21753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21753] setpgid(0, 0)               = 0
[pid 21753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21753] write(3, "1000", 4)         = 4
[pid 21753] close(3)                    = 0
[pid 21753] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21753] write(1, "executing program\n", 18executing program
) = 18
[pid 21753] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21753] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21753] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21753] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21753] exit_group(0)               = ?
[pid 21753] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21753, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20897", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20897", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20897/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20897/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20897/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20897")                        = 0
mkdir("./20898", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21754
./strace-static-x86_64: Process 21754 attached
[pid 21754] set_robust_list(0x5555589fe660, 24) = 0
[pid 21754] chdir("./20898")            = 0
[pid 21754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21754] setpgid(0, 0)               = 0
[pid 21754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 21754] write(3, "1000", 4)         = 4
[pid 21754] close(3)                    = 0
[pid 21754] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21754] write(1, "executing program\n", 18) = 18
[pid 21754] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21754] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21754] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21754] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21754] exit_group(0)               = ?
[pid 21754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20898", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20898", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20898/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20898/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20898/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20898")                        = 0
mkdir("./20899", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21755
./strace-static-x86_64: Process 21755 attached
[pid 21755] set_robust_list(0x5555589fe660, 24) = 0
[pid 21755] chdir("./20899")            = 0
[pid 21755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21755] setpgid(0, 0)               = 0
[pid 21755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21755] write(3, "1000", 4)         = 4
[pid 21755] close(3)                    = 0
[pid 21755] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21755] write(1, "executing program\n", 18executing program
) = 18
[pid 21755] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21755] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21755] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21755] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21755] exit_group(0)               = ?
[pid 21755] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21755, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20899", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20899", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20899/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20899/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20899/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20899")                        = 0
mkdir("./20900", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21756 attached
, child_tidptr=0x5555589fe650) = 21756
[pid 21756] set_robust_list(0x5555589fe660, 24) = 0
[pid 21756] chdir("./20900")            = 0
[pid 21756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21756] setpgid(0, 0)               = 0
[pid 21756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21756] write(3, "1000", 4)         = 4
[pid 21756] close(3)                    = 0
[pid 21756] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21756] write(1, "executing program\n", 18executing program
) = 18
[pid 21756] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21756] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21756] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21756] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21756] exit_group(0)               = ?
[pid 21756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20900", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20900", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20900/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20900/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20900/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20900")                        = 0
mkdir("./20901", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21757
./strace-static-x86_64: Process 21757 attached
[pid 21757] set_robust_list(0x5555589fe660, 24) = 0
[pid 21757] chdir("./20901")            = 0
[pid 21757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21757] setpgid(0, 0)               = 0
[pid 21757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21757] write(3, "1000", 4)         = 4
[pid 21757] close(3)                    = 0
[pid 21757] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21757] write(1, "executing program\n", 18executing program
) = 18
[pid 21757] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21757] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21757] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21757] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21757] exit_group(0)               = ?
[pid 21757] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21757, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20901", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20901", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20901/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20901/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20901/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20901")                        = 0
mkdir("./20902", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21758
./strace-static-x86_64: Process 21758 attached
[pid 21758] set_robust_list(0x5555589fe660, 24) = 0
[pid 21758] chdir("./20902")            = 0
[pid 21758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21758] setpgid(0, 0)               = 0
[pid 21758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21758] write(3, "1000", 4)         = 4
[pid 21758] close(3)                    = 0
[pid 21758] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21758] write(1, "executing program\n", 18executing program
) = 18
[pid 21758] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21758] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21758] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21758] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21758] exit_group(0)               = ?
[pid 21758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20902", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20902", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20902/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20902/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20902/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20902")                        = 0
mkdir("./20903", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21759 attached
, child_tidptr=0x5555589fe650) = 21759
[pid 21759] set_robust_list(0x5555589fe660, 24) = 0
[pid 21759] chdir("./20903")            = 0
[pid 21759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21759] setpgid(0, 0)               = 0
[pid 21759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21759] write(3, "1000", 4)         = 4
[pid 21759] close(3)                    = 0
[pid 21759] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21759] write(1, "executing program\n", 18executing program
) = 18
[pid 21759] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21759] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21759] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21759] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21759] exit_group(0)               = ?
[pid 21759] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21759, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20903", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20903", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20903/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20903/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20903/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20903")                        = 0
mkdir("./20904", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21760
./strace-static-x86_64: Process 21760 attached
[pid 21760] set_robust_list(0x5555589fe660, 24) = 0
[pid 21760] chdir("./20904")            = 0
[pid 21760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21760] setpgid(0, 0)               = 0
[pid 21760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21760] write(3, "1000", 4)         = 4
[pid 21760] close(3)                    = 0
[pid 21760] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21760] write(1, "executing program\n", 18) = 18
[pid 21760] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21760] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21760] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21760] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21760] exit_group(0)               = ?
[pid 21760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20904", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20904", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20904/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20904/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20904/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20904")                        = 0
mkdir("./20905", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21761
./strace-static-x86_64: Process 21761 attached
[pid 21761] set_robust_list(0x5555589fe660, 24) = 0
[pid 21761] chdir("./20905")            = 0
[pid 21761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21761] setpgid(0, 0)               = 0
[pid 21761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21761] write(3, "1000", 4)         = 4
[pid 21761] close(3)                    = 0
[pid 21761] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21761] write(1, "executing program\n", 18executing program
) = 18
[pid 21761] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21761] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21761] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21761] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21761] exit_group(0)               = ?
[pid 21761] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21761, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20905", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20905", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20905/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20905/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20905/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20905")                        = 0
mkdir("./20906", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21763 attached
, child_tidptr=0x5555589fe650) = 21763
[pid 21763] set_robust_list(0x5555589fe660, 24) = 0
[pid 21763] chdir("./20906")            = 0
[pid 21763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21763] setpgid(0, 0)               = 0
[pid 21763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21763] write(3, "1000", 4)         = 4
[pid 21763] close(3)                    = 0
[pid 21763] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21763] write(1, "executing program\n", 18executing program
) = 18
[pid 21763] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21763] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21763] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21763] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21763] exit_group(0)               = ?
[pid 21763] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21763, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20906", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20906", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20906/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20906/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20906/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20906")                        = 0
mkdir("./20907", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21764
./strace-static-x86_64: Process 21764 attached
[pid 21764] set_robust_list(0x5555589fe660, 24) = 0
[pid 21764] chdir("./20907")            = 0
[pid 21764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21764] setpgid(0, 0)               = 0
[pid 21764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21764] write(3, "1000", 4)         = 4
[pid 21764] close(3)                    = 0
[pid 21764] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21764] write(1, "executing program\n", 18executing program
) = 18
[pid 21764] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21764] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21764] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21764] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21764] exit_group(0)               = ?
[pid 21764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20907", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20907", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20907/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20907/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20907/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20907")                        = 0
mkdir("./20908", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21765
./strace-static-x86_64: Process 21765 attached
[pid 21765] set_robust_list(0x5555589fe660, 24) = 0
[pid 21765] chdir("./20908")            = 0
[pid 21765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21765] setpgid(0, 0)               = 0
[pid 21765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21765] write(3, "1000", 4)         = 4
[pid 21765] close(3)                    = 0
[pid 21765] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21765] write(1, "executing program\n", 18executing program
) = 18
[pid 21765] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21765] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21765] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21765] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21765] exit_group(0)               = ?
[pid 21765] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21765, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20908", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20908", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20908/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20908/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20908/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20908")                        = 0
mkdir("./20909", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21766
./strace-static-x86_64: Process 21766 attached
[pid 21766] set_robust_list(0x5555589fe660, 24) = 0
[pid 21766] chdir("./20909")            = 0
[pid 21766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21766] setpgid(0, 0)               = 0
[pid 21766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21766] write(3, "1000", 4)         = 4
[pid 21766] close(3)                    = 0
[pid 21766] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21766] write(1, "executing program\n", 18) = 18
[pid 21766] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21766] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21766] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21766] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21766] exit_group(0)               = ?
[pid 21766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20909", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20909", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20909/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20909/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20909/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20909")                        = 0
mkdir("./20910", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21767
./strace-static-x86_64: Process 21767 attached
[pid 21767] set_robust_list(0x5555589fe660, 24) = 0
[pid 21767] chdir("./20910")            = 0
[pid 21767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21767] setpgid(0, 0)               = 0
[pid 21767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21767] write(3, "1000", 4)         = 4
[pid 21767] close(3)                    = 0
[pid 21767] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21767] write(1, "executing program\n", 18executing program
) = 18
[pid 21767] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21767] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21767] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21767] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21767] exit_group(0)               = ?
[pid 21767] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21767, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20910", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20910", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20910/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20910/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20910/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20910")                        = 0
mkdir("./20911", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21768
./strace-static-x86_64: Process 21768 attached
[pid 21768] set_robust_list(0x5555589fe660, 24) = 0
[pid 21768] chdir("./20911")            = 0
[pid 21768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21768] setpgid(0, 0)               = 0
[pid 21768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21768] write(3, "1000", 4)         = 4
[pid 21768] close(3)                    = 0
[pid 21768] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21768] write(1, "executing program\n", 18) = 18
[pid 21768] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21768] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21768] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21768] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21768] exit_group(0)               = ?
[pid 21768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20911", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20911", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20911/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20911/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20911/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20911")                        = 0
mkdir("./20912", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21769
./strace-static-x86_64: Process 21769 attached
[pid 21769] set_robust_list(0x5555589fe660, 24) = 0
[pid 21769] chdir("./20912")            = 0
[pid 21769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21769] setpgid(0, 0)               = 0
[pid 21769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21769] write(3, "1000", 4)         = 4
[pid 21769] close(3)                    = 0
[pid 21769] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21769] write(1, "executing program\n", 18executing program
) = 18
[pid 21769] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21769] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21769] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21769] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21769] exit_group(0)               = ?
[pid 21769] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21769, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20912", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20912", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20912/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20912/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20912/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20912")                        = 0
mkdir("./20913", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21770
./strace-static-x86_64: Process 21770 attached
[pid 21770] set_robust_list(0x5555589fe660, 24) = 0
[pid 21770] chdir("./20913")            = 0
[pid 21770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21770] setpgid(0, 0)               = 0
[pid 21770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21770] write(3, "1000", 4)         = 4
[pid 21770] close(3)                    = 0
[pid 21770] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21770] write(1, "executing program\n", 18executing program
) = 18
[pid 21770] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21770] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21770] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21770] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21770] exit_group(0)               = ?
[pid 21770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20913", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20913", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20913/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20913/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20913/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20913")                        = 0
mkdir("./20914", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21771
./strace-static-x86_64: Process 21771 attached
[pid 21771] set_robust_list(0x5555589fe660, 24) = 0
[pid 21771] chdir("./20914")            = 0
[pid 21771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21771] setpgid(0, 0)               = 0
[pid 21771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21771] write(3, "1000", 4)         = 4
[pid 21771] close(3)                    = 0
[pid 21771] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21771] write(1, "executing program\n", 18executing program
) = 18
[pid 21771] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21771] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21771] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21771] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21771] exit_group(0)               = ?
[pid 21771] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21771, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20914", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20914", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20914/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20914/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20914/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20914")                        = 0
mkdir("./20915", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21772 attached
 <unfinished ...>
[pid 21772] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21772
[pid 21772] chdir("./20915")            = 0
[pid 21772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21772] setpgid(0, 0)               = 0
[pid 21772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21772] write(3, "1000", 4)         = 4
[pid 21772] close(3)                    = 0
[pid 21772] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21772] write(1, "executing program\n", 18) = 18
[pid 21772] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21772] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21772] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21772] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21772] exit_group(0)               = ?
[pid 21772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20915", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20915", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20915/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20915/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20915/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20915")                        = 0
mkdir("./20916", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21773 attached
, child_tidptr=0x5555589fe650) = 21773
[pid 21773] set_robust_list(0x5555589fe660, 24) = 0
[pid 21773] chdir("./20916")            = 0
[pid 21773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21773] setpgid(0, 0)               = 0
[pid 21773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21773] write(3, "1000", 4)         = 4
[pid 21773] close(3)                    = 0
[pid 21773] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21773] write(1, "executing program\n", 18executing program
) = 18
[pid 21773] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21773] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21773] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21773] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21773] exit_group(0)               = ?
[pid 21773] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21773, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20916", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20916", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20916/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20916/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20916/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20916")                        = 0
mkdir("./20917", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21774
./strace-static-x86_64: Process 21774 attached
[pid 21774] set_robust_list(0x5555589fe660, 24) = 0
[pid 21774] chdir("./20917")            = 0
[pid 21774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21774] setpgid(0, 0)               = 0
[pid 21774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21774] write(3, "1000", 4)         = 4
[pid 21774] close(3)                    = 0
[pid 21774] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21774] write(1, "executing program\n", 18executing program
) = 18
[pid 21774] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21774] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21774] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21774] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21774] exit_group(0)               = ?
[pid 21774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20917", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20917", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20917/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20917/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20917/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20917")                        = 0
mkdir("./20918", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21775
./strace-static-x86_64: Process 21775 attached
[pid 21775] set_robust_list(0x5555589fe660, 24) = 0
[pid 21775] chdir("./20918")            = 0
[pid 21775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21775] setpgid(0, 0)               = 0
[pid 21775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21775] write(3, "1000", 4)         = 4
[pid 21775] close(3)                    = 0
[pid 21775] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21775] write(1, "executing program\n", 18executing program
) = 18
[pid 21775] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21775] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21775] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21775] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21775] exit_group(0)               = ?
[pid 21775] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21775, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20918", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20918", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20918/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20918/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20918/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20918")                        = 0
mkdir("./20919", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21776
./strace-static-x86_64: Process 21776 attached
[pid 21776] set_robust_list(0x5555589fe660, 24) = 0
[pid 21776] chdir("./20919")            = 0
[pid 21776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21776] setpgid(0, 0)               = 0
[pid 21776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21776] write(3, "1000", 4)         = 4
[pid 21776] close(3)                    = 0
[pid 21776] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21776] write(1, "executing program\n", 18executing program
) = 18
[pid 21776] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21776] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21776] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21776] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21776] exit_group(0)               = ?
[pid 21776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20919", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20919", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20919/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20919/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20919/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20919")                        = 0
mkdir("./20920", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21777
./strace-static-x86_64: Process 21777 attached
[pid 21777] set_robust_list(0x5555589fe660, 24) = 0
[pid 21777] chdir("./20920")            = 0
[pid 21777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21777] setpgid(0, 0)               = 0
[pid 21777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21777] write(3, "1000", 4)         = 4
[pid 21777] close(3)                    = 0
[pid 21777] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21777] write(1, "executing program\n", 18executing program
) = 18
[pid 21777] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21777] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21777] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21777] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21777] exit_group(0)               = ?
[pid 21777] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21777, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20920", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20920", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20920/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20920/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20920/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20920")                        = 0
mkdir("./20921", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21778
./strace-static-x86_64: Process 21778 attached
[pid 21778] set_robust_list(0x5555589fe660, 24) = 0
[pid 21778] chdir("./20921")            = 0
[pid 21778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21778] setpgid(0, 0)               = 0
[pid 21778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21778] write(3, "1000", 4)         = 4
[pid 21778] close(3)                    = 0
[pid 21778] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21778] write(1, "executing program\n", 18executing program
) = 18
[pid 21778] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21778] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21778] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21778] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21778] exit_group(0)               = ?
[pid 21778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20921", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20921", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20921/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20921/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20921/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20921")                        = 0
mkdir("./20922", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21779
./strace-static-x86_64: Process 21779 attached
[pid 21779] set_robust_list(0x5555589fe660, 24) = 0
[pid 21779] chdir("./20922")            = 0
[pid 21779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21779] setpgid(0, 0)               = 0
[pid 21779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21779] write(3, "1000", 4)         = 4
[pid 21779] close(3)                    = 0
[pid 21779] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21779] write(1, "executing program\n", 18executing program
) = 18
[pid 21779] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21779] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21779] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21779] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21779] exit_group(0)               = ?
[pid 21779] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21779, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20922", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20922", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20922/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20922/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20922/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20922")                        = 0
mkdir("./20923", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21780
./strace-static-x86_64: Process 21780 attached
[pid 21780] set_robust_list(0x5555589fe660, 24) = 0
[pid 21780] chdir("./20923")            = 0
[pid 21780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21780] setpgid(0, 0)               = 0
[pid 21780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21780] write(3, "1000", 4)         = 4
[pid 21780] close(3)                    = 0
[pid 21780] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21780] write(1, "executing program\n", 18executing program
) = 18
[pid 21780] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21780] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21780] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21780] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21780] exit_group(0)               = ?
[pid 21780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20923", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20923", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20923/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20923/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20923/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20923")                        = 0
mkdir("./20924", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21781 attached
 <unfinished ...>
[pid 21781] set_robust_list(0x5555589fe660, 24) = 0
[pid 21781] chdir("./20924")            = 0
[pid 21781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21781] setpgid(0, 0)               = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21781
[pid 21781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21781] write(3, "1000", 4)         = 4
[pid 21781] close(3)                    = 0
[pid 21781] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21781] write(1, "executing program\n", 18executing program
) = 18
[pid 21781] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21781] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21781] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21781] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21781] exit_group(0)               = ?
[pid 21781] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21781, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20924", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20924", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20924/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20924/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20924/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20924")                        = 0
mkdir("./20925", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21782 attached
, child_tidptr=0x5555589fe650) = 21782
[pid 21782] set_robust_list(0x5555589fe660, 24) = 0
[pid 21782] chdir("./20925")            = 0
[pid 21782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21782] setpgid(0, 0)               = 0
[pid 21782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21782] write(3, "1000", 4)         = 4
[pid 21782] close(3)                    = 0
[pid 21782] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21782] write(1, "executing program\n", 18executing program
) = 18
[pid 21782] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21782] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21782] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21782] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21782] exit_group(0)               = ?
[pid 21782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20925", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20925", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20925/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20925/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20925/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20925")                        = 0
mkdir("./20926", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21783
./strace-static-x86_64: Process 21783 attached
[pid 21783] set_robust_list(0x5555589fe660, 24) = 0
[pid 21783] chdir("./20926")            = 0
[pid 21783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21783] setpgid(0, 0)               = 0
[pid 21783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21783] write(3, "1000", 4)         = 4
[pid 21783] close(3)                    = 0
[pid 21783] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21783] write(1, "executing program\n", 18executing program
) = 18
[pid 21783] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21783] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21783] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21783] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21783] exit_group(0)               = ?
[pid 21783] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21783, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20926", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20926", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20926/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20926/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20926/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20926")                        = 0
mkdir("./20927", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21784
./strace-static-x86_64: Process 21784 attached
[pid 21784] set_robust_list(0x5555589fe660, 24) = 0
[pid 21784] chdir("./20927")            = 0
[pid 21784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21784] setpgid(0, 0)               = 0
[pid 21784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21784] write(3, "1000", 4)         = 4
[pid 21784] close(3)                    = 0
[pid 21784] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21784] write(1, "executing program\n", 18) = 18
[pid 21784] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21784] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21784] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21784] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21784] exit_group(0)               = ?
[pid 21784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20927", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20927", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20927/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20927/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20927/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20927")                        = 0
mkdir("./20928", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21785
./strace-static-x86_64: Process 21785 attached
[pid 21785] set_robust_list(0x5555589fe660, 24) = 0
[pid 21785] chdir("./20928")            = 0
[pid 21785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21785] setpgid(0, 0)               = 0
[pid 21785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21785] write(3, "1000", 4)         = 4
[pid 21785] close(3)                    = 0
[pid 21785] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21785] write(1, "executing program\n", 18) = 18
[pid 21785] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21785] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21785] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21785] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21785] exit_group(0)               = ?
[pid 21785] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21785, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20928", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20928", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20928/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20928/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20928/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20928")                        = 0
mkdir("./20929", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21786
./strace-static-x86_64: Process 21786 attached
[pid 21786] set_robust_list(0x5555589fe660, 24) = 0
[pid 21786] chdir("./20929")            = 0
[pid 21786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21786] setpgid(0, 0)               = 0
[pid 21786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21786] write(3, "1000", 4)         = 4
[pid 21786] close(3)                    = 0
[pid 21786] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21786] write(1, "executing program\n", 18executing program
) = 18
[pid 21786] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21786] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21786] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21786] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21786] exit_group(0)               = ?
[pid 21786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20929", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20929", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20929/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20929/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20929/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20929")                        = 0
mkdir("./20930", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21787 attached
, child_tidptr=0x5555589fe650) = 21787
[pid 21787] set_robust_list(0x5555589fe660, 24) = 0
[pid 21787] chdir("./20930")            = 0
[pid 21787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21787] setpgid(0, 0)               = 0
[pid 21787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21787] write(3, "1000", 4)         = 4
[pid 21787] close(3)                    = 0
[pid 21787] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21787] write(1, "executing program\n", 18executing program
) = 18
[pid 21787] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21787] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21787] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21787] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21787] exit_group(0)               = ?
[pid 21787] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21787, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20930", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20930", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20930/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20930/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20930/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20930")                        = 0
mkdir("./20931", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21788
./strace-static-x86_64: Process 21788 attached
[pid 21788] set_robust_list(0x5555589fe660, 24) = 0
[pid 21788] chdir("./20931")            = 0
[pid 21788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21788] setpgid(0, 0)               = 0
[pid 21788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21788] write(3, "1000", 4)         = 4
[pid 21788] close(3)                    = 0
[pid 21788] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21788] write(1, "executing program\n", 18) = 18
[pid 21788] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21788] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21788] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21788] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21788] exit_group(0)               = ?
[pid 21788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20931", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20931", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20931/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20931/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20931/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20931")                        = 0
mkdir("./20932", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21789 attached
, child_tidptr=0x5555589fe650) = 21789
[pid 21789] set_robust_list(0x5555589fe660, 24) = 0
[pid 21789] chdir("./20932")            = 0
[pid 21789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21789] setpgid(0, 0)               = 0
[pid 21789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21789] write(3, "1000", 4)         = 4
[pid 21789] close(3)                    = 0
[pid 21789] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21789] write(1, "executing program\n", 18executing program
) = 18
[pid 21789] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21789] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21789] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21789] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21789] exit_group(0)               = ?
[pid 21789] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21789, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20932", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20932", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20932/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20932/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20932/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20932")                        = 0
mkdir("./20933", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21790
./strace-static-x86_64: Process 21790 attached
[pid 21790] set_robust_list(0x5555589fe660, 24) = 0
[pid 21790] chdir("./20933")            = 0
[pid 21790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21790] setpgid(0, 0)               = 0
[pid 21790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21790] write(3, "1000", 4)         = 4
[pid 21790] close(3)                    = 0
[pid 21790] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21790] write(1, "executing program\n", 18executing program
) = 18
[pid 21790] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21790] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21790] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21790] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21790] exit_group(0)               = ?
[pid 21790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20933", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20933", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20933/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20933/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20933/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20933")                        = 0
mkdir("./20934", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21791
./strace-static-x86_64: Process 21791 attached
[pid 21791] set_robust_list(0x5555589fe660, 24) = 0
[pid 21791] chdir("./20934")            = 0
[pid 21791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21791] setpgid(0, 0)               = 0
[pid 21791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21791] write(3, "1000", 4)         = 4
[pid 21791] close(3)                    = 0
[pid 21791] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21791] write(1, "executing program\n", 18executing program
) = 18
[pid 21791] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21791] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21791] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21791] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21791] exit_group(0)               = ?
[pid 21791] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21791, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20934", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20934", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20934/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20934/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20934/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20934")                        = 0
mkdir("./20935", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21792
./strace-static-x86_64: Process 21792 attached
[pid 21792] set_robust_list(0x5555589fe660, 24) = 0
[pid 21792] chdir("./20935")            = 0
[pid 21792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21792] setpgid(0, 0)               = 0
[pid 21792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21792] write(3, "1000", 4)         = 4
[pid 21792] close(3)                    = 0
[pid 21792] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21792] write(1, "executing program\n", 18executing program
) = 18
[pid 21792] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21792] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21792] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21792] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21792] exit_group(0)               = ?
[pid 21792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20935", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20935", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20935/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20935/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20935/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20935")                        = 0
mkdir("./20936", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21793
./strace-static-x86_64: Process 21793 attached
[pid 21793] set_robust_list(0x5555589fe660, 24) = 0
[pid 21793] chdir("./20936")            = 0
[pid 21793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21793] setpgid(0, 0)               = 0
[pid 21793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21793] write(3, "1000", 4)         = 4
[pid 21793] close(3)                    = 0
[pid 21793] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21793] write(1, "executing program\n", 18executing program
) = 18
[pid 21793] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21793] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21793] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21793] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21793] exit_group(0)               = ?
[pid 21793] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21793, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20936", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20936", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20936/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20936/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20936/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20936")                        = 0
mkdir("./20937", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21794
./strace-static-x86_64: Process 21794 attached
[pid 21794] set_robust_list(0x5555589fe660, 24) = 0
[pid 21794] chdir("./20937")            = 0
[pid 21794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21794] setpgid(0, 0)               = 0
[pid 21794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21794] write(3, "1000", 4)         = 4
[pid 21794] close(3)                    = 0
[pid 21794] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21794] write(1, "executing program\n", 18executing program
) = 18
[pid 21794] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21794] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21794] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21794] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21794] exit_group(0)               = ?
[pid 21794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20937", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20937", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20937/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20937/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20937/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20937")                        = 0
mkdir("./20938", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21795
./strace-static-x86_64: Process 21795 attached
[pid 21795] set_robust_list(0x5555589fe660, 24) = 0
[pid 21795] chdir("./20938")            = 0
[pid 21795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21795] setpgid(0, 0)               = 0
[pid 21795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21795] write(3, "1000", 4)         = 4
[pid 21795] close(3)                    = 0
[pid 21795] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21795] write(1, "executing program\n", 18executing program
) = 18
[pid 21795] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21795] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21795] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21795] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21795] exit_group(0)               = ?
[pid 21795] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21795, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20938", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20938", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20938/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20938/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20938/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20938")                        = 0
mkdir("./20939", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21796
./strace-static-x86_64: Process 21796 attached
[pid 21796] set_robust_list(0x5555589fe660, 24) = 0
[pid 21796] chdir("./20939")            = 0
[pid 21796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21796] setpgid(0, 0)               = 0
[pid 21796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21796] write(3, "1000", 4)         = 4
[pid 21796] close(3)                    = 0
[pid 21796] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21796] write(1, "executing program\n", 18executing program
) = 18
[pid 21796] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21796] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21796] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21796] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21796] exit_group(0)               = ?
[pid 21796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20939", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20939", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20939/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20939/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20939/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20939")                        = 0
mkdir("./20940", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21797
./strace-static-x86_64: Process 21797 attached
[pid 21797] set_robust_list(0x5555589fe660, 24) = 0
[pid 21797] chdir("./20940")            = 0
[pid 21797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21797] setpgid(0, 0)               = 0
[pid 21797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21797] write(3, "1000", 4)         = 4
[pid 21797] close(3)                    = 0
[pid 21797] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21797] write(1, "executing program\n", 18executing program
) = 18
[pid 21797] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21797] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21797] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21797] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21797] exit_group(0)               = ?
[pid 21797] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21797, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20940", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20940", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20940/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20940/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20940/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20940")                        = 0
mkdir("./20941", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21798
./strace-static-x86_64: Process 21798 attached
[pid 21798] set_robust_list(0x5555589fe660, 24) = 0
[pid 21798] chdir("./20941")            = 0
[pid 21798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21798] setpgid(0, 0)               = 0
[pid 21798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21798] write(3, "1000", 4)         = 4
[pid 21798] close(3)                    = 0
[pid 21798] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21798] write(1, "executing program\n", 18executing program
) = 18
[pid 21798] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21798] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21798] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21798] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21798] exit_group(0)               = ?
[pid 21798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20941", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20941", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20941/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20941/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20941/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20941")                        = 0
mkdir("./20942", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21799
./strace-static-x86_64: Process 21799 attached
[pid 21799] set_robust_list(0x5555589fe660, 24) = 0
[pid 21799] chdir("./20942")            = 0
[pid 21799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21799] setpgid(0, 0)               = 0
[pid 21799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21799] write(3, "1000", 4)         = 4
[pid 21799] close(3)                    = 0
[pid 21799] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21799] write(1, "executing program\n", 18) = 18
[pid 21799] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21799] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21799] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21799] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21799] exit_group(0)               = ?
[pid 21799] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21799, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20942", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20942", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20942/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20942/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20942/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20942")                        = 0
mkdir("./20943", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21800 attached
, child_tidptr=0x5555589fe650) = 21800
[pid 21800] set_robust_list(0x5555589fe660, 24) = 0
[pid 21800] chdir("./20943")            = 0
[pid 21800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21800] setpgid(0, 0)               = 0
[pid 21800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21800] write(3, "1000", 4)         = 4
[pid 21800] close(3)                    = 0
[pid 21800] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21800] write(1, "executing program\n", 18executing program
) = 18
[pid 21800] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21800] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21800] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21800] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21800] exit_group(0)               = ?
[pid 21800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20943", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20943", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20943/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20943/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20943/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20943")                        = 0
mkdir("./20944", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21801
./strace-static-x86_64: Process 21801 attached
[pid 21801] set_robust_list(0x5555589fe660, 24) = 0
[pid 21801] chdir("./20944")            = 0
[pid 21801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21801] setpgid(0, 0)               = 0
[pid 21801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21801] write(3, "1000", 4)         = 4
[pid 21801] close(3)                    = 0
[pid 21801] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21801] write(1, "executing program\n", 18executing program
) = 18
[pid 21801] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21801] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21801] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21801] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21801] exit_group(0)               = ?
[pid 21801] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21801, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20944", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20944", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20944/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20944/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20944/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20944")                        = 0
mkdir("./20945", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21802 attached
, child_tidptr=0x5555589fe650) = 21802
[pid 21802] set_robust_list(0x5555589fe660, 24) = 0
[pid 21802] chdir("./20945")            = 0
[pid 21802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21802] setpgid(0, 0)               = 0
[pid 21802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21802] write(3, "1000", 4)         = 4
[pid 21802] close(3)                    = 0
[pid 21802] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21802] write(1, "executing program\n", 18) = 18
[pid 21802] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21802] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21802] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21802] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21802] exit_group(0)               = ?
[pid 21802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20945", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20945", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20945/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20945/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20945/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20945")                        = 0
mkdir("./20946", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21803
./strace-static-x86_64: Process 21803 attached
[pid 21803] set_robust_list(0x5555589fe660, 24) = 0
[pid 21803] chdir("./20946")            = 0
[pid 21803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21803] setpgid(0, 0)               = 0
[pid 21803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21803] write(3, "1000", 4)         = 4
[pid 21803] close(3)                    = 0
[pid 21803] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21803] write(1, "executing program\n", 18) = 18
[pid 21803] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21803] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21803] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21803] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21803] exit_group(0)               = ?
[pid 21803] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21803, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20946", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20946", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20946/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20946/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20946/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20946")                        = 0
mkdir("./20947", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21804 attached
 <unfinished ...>
[pid 21804] set_robust_list(0x5555589fe660, 24) = 0
[pid 21804] chdir("./20947" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21804
[pid 21804] <... chdir resumed>)        = 0
[pid 21804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21804] setpgid(0, 0)               = 0
[pid 21804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21804] write(3, "1000", 4)         = 4
[pid 21804] close(3)                    = 0
[pid 21804] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21804] write(1, "executing program\n", 18) = 18
[pid 21804] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21804] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21804] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21804] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21804] exit_group(0)               = ?
[pid 21804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20947", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20947", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20947/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20947/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20947/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20947")                        = 0
mkdir("./20948", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21805
./strace-static-x86_64: Process 21805 attached
[pid 21805] set_robust_list(0x5555589fe660, 24) = 0
[pid 21805] chdir("./20948")            = 0
[pid 21805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21805] setpgid(0, 0)               = 0
[pid 21805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21805] write(3, "1000", 4)         = 4
[pid 21805] close(3)                    = 0
[pid 21805] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21805] write(1, "executing program\n", 18executing program
) = 18
[pid 21805] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21805] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21805] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21805] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21805] exit_group(0)               = ?
[pid 21805] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21805, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20948", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20948", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20948/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20948/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20948/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20948")                        = 0
mkdir("./20949", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21806 attached
 <unfinished ...>
[pid 21806] set_robust_list(0x5555589fe660, 24) = 0
[pid 21806] chdir("./20949" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21806
[pid 21806] <... chdir resumed>)        = 0
[pid 21806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21806] setpgid(0, 0)               = 0
[pid 21806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21806] write(3, "1000", 4)         = 4
[pid 21806] close(3)                    = 0
[pid 21806] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21806] write(1, "executing program\n", 18) = 18
[pid 21806] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21806] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21806] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21806] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21806] exit_group(0)               = ?
[pid 21806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20949", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20949", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20949/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20949/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20949/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20949")                        = 0
mkdir("./20950", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21807
./strace-static-x86_64: Process 21807 attached
[pid 21807] set_robust_list(0x5555589fe660, 24) = 0
[pid 21807] chdir("./20950")            = 0
[pid 21807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21807] setpgid(0, 0)               = 0
[pid 21807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21807] write(3, "1000", 4)         = 4
[pid 21807] close(3)                    = 0
[pid 21807] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21807] write(1, "executing program\n", 18) = 18
[pid 21807] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21807] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21807] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21807] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21807] exit_group(0)               = ?
[pid 21807] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21807, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20950", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20950", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20950/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20950/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20950/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20950")                        = 0
mkdir("./20951", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21808
./strace-static-x86_64: Process 21808 attached
[pid 21808] set_robust_list(0x5555589fe660, 24) = 0
[pid 21808] chdir("./20951")            = 0
[pid 21808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21808] setpgid(0, 0)               = 0
[pid 21808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21808] write(3, "1000", 4)         = 4
[pid 21808] close(3)                    = 0
[pid 21808] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21808] write(1, "executing program\n", 18executing program
) = 18
[pid 21808] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21808] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21808] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21808] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21808] exit_group(0)               = ?
[pid 21808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20951", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20951", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20951/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20951/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20951/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20951")                        = 0
mkdir("./20952", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21809
./strace-static-x86_64: Process 21809 attached
[pid 21809] set_robust_list(0x5555589fe660, 24) = 0
[pid 21809] chdir("./20952")            = 0
[pid 21809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21809] setpgid(0, 0)               = 0
[pid 21809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21809] write(3, "1000", 4)         = 4
[pid 21809] close(3)                    = 0
[pid 21809] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21809] write(1, "executing program\n", 18executing program
) = 18
[pid 21809] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21809] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21809] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21809] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21809] exit_group(0)               = ?
[pid 21809] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21809, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20952", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20952", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20952/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20952/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20952/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20952")                        = 0
mkdir("./20953", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21810
./strace-static-x86_64: Process 21810 attached
[pid 21810] set_robust_list(0x5555589fe660, 24) = 0
[pid 21810] chdir("./20953")            = 0
[pid 21810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21810] setpgid(0, 0)               = 0
[pid 21810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21810] write(3, "1000", 4)         = 4
[pid 21810] close(3)                    = 0
[pid 21810] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21810] write(1, "executing program\n", 18executing program
) = 18
[pid 21810] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21810] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21810] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21810] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21810] exit_group(0)               = ?
[pid 21810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20953", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20953", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20953/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20953/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20953/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20953")                        = 0
mkdir("./20954", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21811 attached
 <unfinished ...>
[pid 21811] set_robust_list(0x5555589fe660, 24) = 0
[pid 21811] chdir("./20954")            = 0
[pid 21811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21811] setpgid(0, 0)               = 0
[pid 21811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21811
[pid 21811] <... openat resumed>)       = 3
[pid 21811] write(3, "1000", 4)         = 4
[pid 21811] close(3executing program
)                    = 0
[pid 21811] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21811] write(1, "executing program\n", 18) = 18
[pid 21811] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21811] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21811] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21811] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21811] exit_group(0)               = ?
[pid 21811] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21811, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20954", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20954", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20954/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20954/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20954/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20954")                        = 0
mkdir("./20955", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21812 attached
 <unfinished ...>
[pid 21812] set_robust_list(0x5555589fe660, 24) = 0
[pid 21812] chdir("./20955")            = 0
[pid 21812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21812] setpgid(0, 0)               = 0
[pid 21812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21812
[pid 21812] <... openat resumed>)       = 3
[pid 21812] write(3, "1000", 4)         = 4
[pid 21812] close(3)                    = 0
[pid 21812] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21812] write(1, "executing program\n", 18) = 18
[pid 21812] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21812] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21812] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21812] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21812] exit_group(0)               = ?
[pid 21812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20955", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20955", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20955/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20955/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20955/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20955")                        = 0
mkdir("./20956", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21813
./strace-static-x86_64: Process 21813 attached
[pid 21813] set_robust_list(0x5555589fe660, 24) = 0
[pid 21813] chdir("./20956")            = 0
[pid 21813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21813] setpgid(0, 0)               = 0
[pid 21813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21813] write(3, "1000", 4)         = 4
[pid 21813] close(3)                    = 0
[pid 21813] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21813] write(1, "executing program\n", 18) = 18
[pid 21813] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21813] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21813] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21813] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21813] exit_group(0)               = ?
[pid 21813] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21813, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20956", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20956", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20956/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20956/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20956/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20956")                        = 0
mkdir("./20957", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21814 attached
 <unfinished ...>
[pid 21814] set_robust_list(0x5555589fe660, 24) = 0
[pid 21814] chdir("./20957" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21814
[pid 21814] <... chdir resumed>)        = 0
[pid 21814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21814] setpgid(0, 0)               = 0
[pid 21814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21814] write(3, "1000", 4)         = 4
[pid 21814] close(3)                    = 0
[pid 21814] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21814] write(1, "executing program\n", 18executing program
) = 18
[pid 21814] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21814] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21814] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21814] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21814] exit_group(0)               = ?
[pid 21814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20957", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20957", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20957/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20957/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20957/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20957")                        = 0
mkdir("./20958", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21815
./strace-static-x86_64: Process 21815 attached
[pid 21815] set_robust_list(0x5555589fe660, 24) = 0
[pid 21815] chdir("./20958")            = 0
[pid 21815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21815] setpgid(0, 0)               = 0
[pid 21815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21815] write(3, "1000", 4)         = 4
[pid 21815] close(3)                    = 0
[pid 21815] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21815] write(1, "executing program\n", 18executing program
) = 18
[pid 21815] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21815] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21815] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21815] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21815] exit_group(0)               = ?
[pid 21815] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21815, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20958", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20958", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20958/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20958/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20958/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20958")                        = 0
mkdir("./20959", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21816 attached
 <unfinished ...>
[pid 21816] set_robust_list(0x5555589fe660, 24) = 0
[pid 21816] chdir("./20959")            = 0
[pid 21816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21816] setpgid(0, 0)               = 0
[pid 21816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21816
[pid 21816] <... openat resumed>)       = 3
[pid 21816] write(3, "1000", 4)         = 4
[pid 21816] close(3)                    = 0
[pid 21816] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21816] write(1, "executing program\n", 18) = 18
[pid 21816] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21816] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21816] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21816] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21816] exit_group(0)               = ?
[pid 21816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20959", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20959", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20959/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20959/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20959/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20959")                        = 0
mkdir("./20960", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21817
./strace-static-x86_64: Process 21817 attached
[pid 21817] set_robust_list(0x5555589fe660, 24) = 0
[pid 21817] chdir("./20960")            = 0
[pid 21817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21817] setpgid(0, 0)               = 0
[pid 21817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21817] write(3, "1000", 4)         = 4
[pid 21817] close(3)                    = 0
[pid 21817] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21817] write(1, "executing program\n", 18executing program
) = 18
[pid 21817] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21817] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21817] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21817] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21817] exit_group(0)               = ?
[pid 21817] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21817, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20960", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20960", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20960/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20960/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20960/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20960")                        = 0
mkdir("./20961", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21818
./strace-static-x86_64: Process 21818 attached
[pid 21818] set_robust_list(0x5555589fe660, 24) = 0
[pid 21818] chdir("./20961")            = 0
[pid 21818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21818] setpgid(0, 0)               = 0
[pid 21818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21818] write(3, "1000", 4)         = 4
[pid 21818] close(3)                    = 0
[pid 21818] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21818] write(1, "executing program\n", 18executing program
) = 18
[pid 21818] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21818] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21818] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21818] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21818] exit_group(0)               = ?
[pid 21818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20961", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20961", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20961/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20961/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20961/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20961")                        = 0
mkdir("./20962", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21819
./strace-static-x86_64: Process 21819 attached
[pid 21819] set_robust_list(0x5555589fe660, 24) = 0
[pid 21819] chdir("./20962")            = 0
[pid 21819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21819] setpgid(0, 0)               = 0
[pid 21819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21819] write(3, "1000", 4)         = 4
[pid 21819] close(3)                    = 0
[pid 21819] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21819] write(1, "executing program\n", 18executing program
) = 18
[pid 21819] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21819] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21819] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21819] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21819] exit_group(0)               = ?
[pid 21819] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21819, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20962", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20962", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20962/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20962/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20962/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20962")                        = 0
mkdir("./20963", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21820
./strace-static-x86_64: Process 21820 attached
[pid 21820] set_robust_list(0x5555589fe660, 24) = 0
[pid 21820] chdir("./20963")            = 0
[pid 21820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21820] setpgid(0, 0)               = 0
[pid 21820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21820] write(3, "1000", 4)         = 4
[pid 21820] close(3)                    = 0
[pid 21820] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21820] write(1, "executing program\n", 18) = 18
[pid 21820] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21820] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21820] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21820] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21820] exit_group(0)               = ?
[pid 21820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20963", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20963", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20963/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20963/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20963/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20963")                        = 0
mkdir("./20964", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21821
./strace-static-x86_64: Process 21821 attached
[pid 21821] set_robust_list(0x5555589fe660, 24) = 0
[pid 21821] chdir("./20964")            = 0
[pid 21821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21821] setpgid(0, 0)               = 0
[pid 21821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21821] write(3, "1000", 4)         = 4
[pid 21821] close(3)                    = 0
[pid 21821] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21821] write(1, "executing program\n", 18) = 18
[pid 21821] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21821] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21821] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21821] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21821] exit_group(0)               = ?
[pid 21821] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21821, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20964", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20964", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20964/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20964/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20964/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20964")                        = 0
mkdir("./20965", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21822
./strace-static-x86_64: Process 21822 attached
[pid 21822] set_robust_list(0x5555589fe660, 24) = 0
[pid 21822] chdir("./20965")            = 0
[pid 21822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21822] setpgid(0, 0)               = 0
[pid 21822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21822] write(3, "1000", 4)         = 4
[pid 21822] close(3)                    = 0
[pid 21822] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21822] write(1, "executing program\n", 18executing program
) = 18
[pid 21822] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21822] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21822] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21822] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21822] exit_group(0)               = ?
[pid 21822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20965", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20965", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20965/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20965/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20965/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20965")                        = 0
mkdir("./20966", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21823
./strace-static-x86_64: Process 21823 attached
[pid 21823] set_robust_list(0x5555589fe660, 24) = 0
[pid 21823] chdir("./20966")            = 0
[pid 21823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21823] setpgid(0, 0)               = 0
[pid 21823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21823] write(3, "1000", 4)         = 4
[pid 21823] close(3)                    = 0
[pid 21823] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21823] write(1, "executing program\n", 18executing program
) = 18
[pid 21823] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21823] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21823] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21823] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21823] exit_group(0)               = ?
[pid 21823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21823, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20966", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20966", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20966/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20966/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20966/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20966")                        = 0
mkdir("./20967", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21824
./strace-static-x86_64: Process 21824 attached
[pid 21824] set_robust_list(0x5555589fe660, 24) = 0
[pid 21824] chdir("./20967")            = 0
[pid 21824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21824] setpgid(0, 0)               = 0
[pid 21824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21824] write(3, "1000", 4)         = 4
[pid 21824] close(3)                    = 0
[pid 21824] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21824] write(1, "executing program\n", 18executing program
) = 18
[pid 21824] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21824] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21824] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21824] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21824] exit_group(0)               = ?
[pid 21824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20967", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20967", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20967/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20967/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20967/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20967")                        = 0
mkdir("./20968", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21825 attached
 <unfinished ...>
[pid 21825] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21825
[pid 21825] chdir("./20968")            = 0
[pid 21825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21825] setpgid(0, 0)               = 0
[pid 21825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21825] write(3, "1000", 4)         = 4
[pid 21825] close(3)                    = 0
[pid 21825] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21825] write(1, "executing program\n", 18executing program
) = 18
[pid 21825] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21825] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21825] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21825] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21825] exit_group(0)               = ?
[pid 21825] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21825, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20968", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20968", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20968/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20968/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20968/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20968")                        = 0
mkdir("./20969", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21826
./strace-static-x86_64: Process 21826 attached
[pid 21826] set_robust_list(0x5555589fe660, 24) = 0
[pid 21826] chdir("./20969")            = 0
[pid 21826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21826] setpgid(0, 0)               = 0
[pid 21826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21826] write(3, "1000", 4)         = 4
[pid 21826] close(3)                    = 0
[pid 21826] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21826] write(1, "executing program\n", 18) = 18
[pid 21826] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21826] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21826] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21826] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21826] exit_group(0)               = ?
[pid 21826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20969", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20969", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20969/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20969/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20969/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20969")                        = 0
mkdir("./20970", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21827 attached
, child_tidptr=0x5555589fe650) = 21827
[pid 21827] set_robust_list(0x5555589fe660, 24) = 0
[pid 21827] chdir("./20970")            = 0
[pid 21827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21827] setpgid(0, 0)               = 0
[pid 21827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21827] write(3, "1000", 4)         = 4
[pid 21827] close(3)                    = 0
[pid 21827] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21827] write(1, "executing program\n", 18executing program
) = 18
[pid 21827] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21827] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21827] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21827] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21827] exit_group(0)               = ?
[pid 21827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21827, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20970", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20970", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20970/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20970/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20970/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20970")                        = 0
mkdir("./20971", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21828
./strace-static-x86_64: Process 21828 attached
[pid 21828] set_robust_list(0x5555589fe660, 24) = 0
[pid 21828] chdir("./20971")            = 0
[pid 21828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21828] setpgid(0, 0)               = 0
[pid 21828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21828] write(3, "1000", 4)         = 4
[pid 21828] close(3)                    = 0
[pid 21828] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21828] write(1, "executing program\n", 18executing program
) = 18
[pid 21828] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21828] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21828] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21828] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21828] exit_group(0)               = ?
[pid 21828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20971", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20971", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20971/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20971/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20971/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20971")                        = 0
mkdir("./20972", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21829 attached
, child_tidptr=0x5555589fe650) = 21829
[pid 21829] set_robust_list(0x5555589fe660, 24) = 0
[pid 21829] chdir("./20972")            = 0
[pid 21829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21829] setpgid(0, 0)               = 0
[pid 21829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21829] write(3, "1000", 4)         = 4
[pid 21829] close(3)                    = 0
[pid 21829] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21829] write(1, "executing program\n", 18executing program
) = 18
[pid 21829] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21829] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21829] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21829] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21829] exit_group(0)               = ?
[pid 21829] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21829, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20972", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20972", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20972/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20972/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20972/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20972")                        = 0
mkdir("./20973", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21830
./strace-static-x86_64: Process 21830 attached
[pid 21830] set_robust_list(0x5555589fe660, 24) = 0
[pid 21830] chdir("./20973")            = 0
[pid 21830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21830] setpgid(0, 0)               = 0
[pid 21830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21830] write(3, "1000", 4)         = 4
[pid 21830] close(3)                    = 0
[pid 21830] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21830] write(1, "executing program\n", 18executing program
) = 18
[pid 21830] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21830] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21830] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21830] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21830] exit_group(0)               = ?
[pid 21830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20973", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20973", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20973/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20973/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20973/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20973")                        = 0
mkdir("./20974", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21831
./strace-static-x86_64: Process 21831 attached
[pid 21831] set_robust_list(0x5555589fe660, 24) = 0
[pid 21831] chdir("./20974")            = 0
[pid 21831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21831] setpgid(0, 0)               = 0
[pid 21831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21831] write(3, "1000", 4)         = 4
[pid 21831] close(3)                    = 0
[pid 21831] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21831] write(1, "executing program\n", 18executing program
) = 18
[pid 21831] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21831] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21831] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21831] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21831] exit_group(0)               = ?
[pid 21831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21831, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20974", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20974", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20974/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20974/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20974/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20974")                        = 0
mkdir("./20975", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21832
./strace-static-x86_64: Process 21832 attached
[pid 21832] set_robust_list(0x5555589fe660, 24) = 0
[pid 21832] chdir("./20975")            = 0
[pid 21832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21832] setpgid(0, 0)               = 0
[pid 21832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21832] write(3, "1000", 4)         = 4
[pid 21832] close(3)                    = 0
[pid 21832] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21832] write(1, "executing program\n", 18executing program
) = 18
[pid 21832] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21832] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21832] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21832] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21832] exit_group(0)               = ?
[pid 21832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20975", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20975", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20975/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20975/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20975/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20975")                        = 0
mkdir("./20976", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21834
./strace-static-x86_64: Process 21834 attached
[pid 21834] set_robust_list(0x5555589fe660, 24) = 0
[pid 21834] chdir("./20976")            = 0
[pid 21834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21834] setpgid(0, 0)               = 0
[pid 21834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21834] write(3, "1000", 4)         = 4
[pid 21834] close(3)                    = 0
[pid 21834] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21834] write(1, "executing program\n", 18executing program
) = 18
[pid 21834] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21834] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21834] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21834] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21834] exit_group(0)               = ?
[pid 21834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20976", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20976", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20976/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20976/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20976/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20976")                        = 0
mkdir("./20977", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21835
./strace-static-x86_64: Process 21835 attached
[pid 21835] set_robust_list(0x5555589fe660, 24) = 0
[pid 21835] chdir("./20977")            = 0
[pid 21835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21835] setpgid(0, 0)               = 0
[pid 21835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21835] write(3, "1000", 4)         = 4
[pid 21835] close(3)                    = 0
[pid 21835] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21835] write(1, "executing program\n", 18) = 18
[pid 21835] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21835] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21835] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21835] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21835] exit_group(0)               = ?
[pid 21835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21835, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20977", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20977", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20977/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20977/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20977/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20977")                        = 0
mkdir("./20978", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21836
./strace-static-x86_64: Process 21836 attached
[pid 21836] set_robust_list(0x5555589fe660, 24) = 0
[pid 21836] chdir("./20978")            = 0
[pid 21836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21836] setpgid(0, 0)               = 0
[pid 21836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21836] write(3, "1000", 4)         = 4
[pid 21836] close(3)                    = 0
[pid 21836] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21836] write(1, "executing program\n", 18) = 18
[pid 21836] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21836] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21836] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21836] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21836] exit_group(0)               = ?
[pid 21836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20978", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20978", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20978/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20978/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20978/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20978")                        = 0
mkdir("./20979", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21837
./strace-static-x86_64: Process 21837 attached
[pid 21837] set_robust_list(0x5555589fe660, 24) = 0
[pid 21837] chdir("./20979")            = 0
[pid 21837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21837] setpgid(0, 0)               = 0
[pid 21837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21837] write(3, "1000", 4)         = 4
[pid 21837] close(3)                    = 0
[pid 21837] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21837] write(1, "executing program\n", 18executing program
) = 18
[pid 21837] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21837] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21837] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21837] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21837] exit_group(0)               = ?
[pid 21837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21837, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20979", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20979", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20979/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20979/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20979/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20979")                        = 0
mkdir("./20980", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21838
./strace-static-x86_64: Process 21838 attached
[pid 21838] set_robust_list(0x5555589fe660, 24) = 0
[pid 21838] chdir("./20980")            = 0
[pid 21838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21838] setpgid(0, 0)               = 0
[pid 21838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21838] write(3, "1000", 4)         = 4
[pid 21838] close(3)                    = 0
[pid 21838] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21838] write(1, "executing program\n", 18executing program
) = 18
[pid 21838] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21838] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21838] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21838] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21838] exit_group(0)               = ?
[pid 21838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20980", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20980", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20980/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20980/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20980/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20980")                        = 0
mkdir("./20981", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21839
./strace-static-x86_64: Process 21839 attached
[pid 21839] set_robust_list(0x5555589fe660, 24) = 0
[pid 21839] chdir("./20981")            = 0
[pid 21839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21839] setpgid(0, 0)               = 0
[pid 21839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21839] write(3, "1000", 4)         = 4
[pid 21839] close(3)                    = 0
[pid 21839] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21839] write(1, "executing program\n", 18executing program
) = 18
[pid 21839] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21839] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21839] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21839] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21839] exit_group(0)               = ?
[pid 21839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21839, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20981", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20981", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20981/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20981/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20981/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20981")                        = 0
mkdir("./20982", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21840
./strace-static-x86_64: Process 21840 attached
[pid 21840] set_robust_list(0x5555589fe660, 24) = 0
[pid 21840] chdir("./20982")            = 0
[pid 21840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21840] setpgid(0, 0)               = 0
[pid 21840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21840] write(3, "1000", 4)         = 4
[pid 21840] close(3)                    = 0
[pid 21840] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21840] write(1, "executing program\n", 18) = 18
[pid 21840] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21840] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21840] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21840] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21840] exit_group(0)               = ?
[pid 21840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20982", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20982", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20982/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20982/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20982/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20982")                        = 0
mkdir("./20983", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21841
./strace-static-x86_64: Process 21841 attached
[pid 21841] set_robust_list(0x5555589fe660, 24) = 0
[pid 21841] chdir("./20983")            = 0
[pid 21841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21841] setpgid(0, 0)               = 0
[pid 21841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21841] write(3, "1000", 4)         = 4
[pid 21841] close(3)                    = 0
[pid 21841] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21841] write(1, "executing program\n", 18executing program
) = 18
[pid 21841] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21841] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21841] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21841] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21841] exit_group(0)               = ?
[pid 21841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21841, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20983", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20983", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20983/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20983/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20983/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20983")                        = 0
mkdir("./20984", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21842 attached
 <unfinished ...>
[pid 21842] set_robust_list(0x5555589fe660, 24) = 0
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21842
[pid 21842] chdir("./20984")            = 0
[pid 21842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21842] setpgid(0, 0)               = 0
[pid 21842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21842] write(3, "1000", 4)         = 4
[pid 21842] close(3)                    = 0
[pid 21842] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21842] write(1, "executing program\n", 18executing program
) = 18
[pid 21842] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21842] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21842] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21842] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21842] exit_group(0)               = ?
[pid 21842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20984", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20984", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20984/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20984/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20984/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20984")                        = 0
mkdir("./20985", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21843
./strace-static-x86_64: Process 21843 attached
[pid 21843] set_robust_list(0x5555589fe660, 24) = 0
[pid 21843] chdir("./20985")            = 0
[pid 21843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21843] setpgid(0, 0)               = 0
[pid 21843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21843] write(3, "1000", 4)         = 4
[pid 21843] close(3)                    = 0
[pid 21843] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21843] write(1, "executing program\n", 18) = 18
[pid 21843] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21843] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21843] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21843] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21843] exit_group(0)               = ?
[pid 21843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21843, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20985", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20985", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20985/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20985/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20985/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20985")                        = 0
mkdir("./20986", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21844
./strace-static-x86_64: Process 21844 attached
[pid 21844] set_robust_list(0x5555589fe660, 24) = 0
[pid 21844] chdir("./20986")            = 0
[pid 21844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21844] setpgid(0, 0)               = 0
[pid 21844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21844] write(3, "1000", 4)         = 4
[pid 21844] close(3)                    = 0
[pid 21844] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21844] write(1, "executing program\n", 18executing program
) = 18
[pid 21844] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21844] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21844] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21844] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21844] exit_group(0)               = ?
[pid 21844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20986", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20986", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20986/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20986/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20986/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20986")                        = 0
mkdir("./20987", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21845
./strace-static-x86_64: Process 21845 attached
[pid 21845] set_robust_list(0x5555589fe660, 24) = 0
[pid 21845] chdir("./20987")            = 0
[pid 21845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21845] setpgid(0, 0)               = 0
[pid 21845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21845] write(3, "1000", 4)         = 4
[pid 21845] close(3)                    = 0
[pid 21845] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21845] write(1, "executing program\n", 18executing program
) = 18
[pid 21845] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21845] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21845] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21845] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21845] exit_group(0)               = ?
[pid 21845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21845, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20987", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20987", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20987/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20987/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20987/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20987")                        = 0
mkdir("./20988", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21846
./strace-static-x86_64: Process 21846 attached
[pid 21846] set_robust_list(0x5555589fe660, 24) = 0
[pid 21846] chdir("./20988")            = 0
[pid 21846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21846] setpgid(0, 0)               = 0
[pid 21846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21846] write(3, "1000", 4)         = 4
[pid 21846] close(3)                    = 0
[pid 21846] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21846] write(1, "executing program\n", 18executing program
) = 18
[pid 21846] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21846] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21846] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21846] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21846] exit_group(0)               = ?
[pid 21846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20988", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20988", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20988/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20988/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20988/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20988")                        = 0
mkdir("./20989", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21847
./strace-static-x86_64: Process 21847 attached
[pid 21847] set_robust_list(0x5555589fe660, 24) = 0
[pid 21847] chdir("./20989")            = 0
[pid 21847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21847] setpgid(0, 0)               = 0
[pid 21847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21847] write(3, "1000", 4)         = 4
[pid 21847] close(3)                    = 0
[pid 21847] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21847] write(1, "executing program\n", 18) = 18
[pid 21847] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21847] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21847] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21847] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21847] exit_group(0)               = ?
[pid 21847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21847, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20989", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20989", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20989/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20989/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20989/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20989")                        = 0
mkdir("./20990", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21848
./strace-static-x86_64: Process 21848 attached
[pid 21848] set_robust_list(0x5555589fe660, 24) = 0
[pid 21848] chdir("./20990")            = 0
[pid 21848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21848] setpgid(0, 0)               = 0
[pid 21848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21848] write(3, "1000", 4)         = 4
[pid 21848] close(3)                    = 0
[pid 21848] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21848] write(1, "executing program\n", 18executing program
) = 18
[pid 21848] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21848] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21848] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21848] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21848] exit_group(0)               = ?
[pid 21848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20990", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20990", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20990/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20990/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20990/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20990")                        = 0
mkdir("./20991", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21849
./strace-static-x86_64: Process 21849 attached
[pid 21849] set_robust_list(0x5555589fe660, 24) = 0
[pid 21849] chdir("./20991")            = 0
[pid 21849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21849] setpgid(0, 0)               = 0
[pid 21849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21849] write(3, "1000", 4)         = 4
[pid 21849] close(3)                    = 0
[pid 21849] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21849] write(1, "executing program\n", 18executing program
) = 18
[pid 21849] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21849] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21849] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21849] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21849] exit_group(0)               = ?
[pid 21849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21849, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20991", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20991", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20991/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20991/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20991/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20991")                        = 0
mkdir("./20992", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21850 attached
 <unfinished ...>
[pid 21850] set_robust_list(0x5555589fe660, 24) = 0
[pid 21850] chdir("./20992" <unfinished ...>
[pid   557] <... clone resumed>, child_tidptr=0x5555589fe650) = 21850
[pid 21850] <... chdir resumed>)        = 0
[pid 21850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21850] setpgid(0, 0)               = 0
[pid 21850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21850] write(3, "1000", 4)         = 4
[pid 21850] close(3)                    = 0
[pid 21850] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21850] write(1, "executing program\n", 18executing program
) = 18
[pid 21850] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21850] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21850] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21850] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21850] exit_group(0)               = ?
[pid 21850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20992", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20992", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20992/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20992/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20992/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20992")                        = 0
mkdir("./20993", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21851
./strace-static-x86_64: Process 21851 attached
[pid 21851] set_robust_list(0x5555589fe660, 24) = 0
[pid 21851] chdir("./20993")            = 0
[pid 21851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21851] setpgid(0, 0)               = 0
[pid 21851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21851] write(3, "1000", 4)         = 4
[pid 21851] close(3)                    = 0
[pid 21851] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21851] write(1, "executing program\n", 18executing program
) = 18
[pid 21851] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21851] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21851] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21851] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21851] exit_group(0)               = ?
[pid 21851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21851, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20993", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20993", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20993/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20993/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20993/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20993")                        = 0
mkdir("./20994", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21852
./strace-static-x86_64: Process 21852 attached
[pid 21852] set_robust_list(0x5555589fe660, 24) = 0
[pid 21852] chdir("./20994")            = 0
[pid 21852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21852] setpgid(0, 0)               = 0
[pid 21852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21852] write(3, "1000", 4)         = 4
[pid 21852] close(3)                    = 0
[pid 21852] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21852] write(1, "executing program\n", 18executing program
) = 18
[pid 21852] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21852] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21852] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21852] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21852] exit_group(0)               = ?
[pid 21852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20994", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20994", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20994/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20994/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20994/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20994")                        = 0
mkdir("./20995", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21853 attached
, child_tidptr=0x5555589fe650) = 21853
[pid 21853] set_robust_list(0x5555589fe660, 24) = 0
[pid 21853] chdir("./20995")            = 0
[pid 21853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21853] setpgid(0, 0)               = 0
[pid 21853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21853] write(3, "1000", 4)         = 4
[pid 21853] close(3)                    = 0
[pid 21853] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21853] write(1, "executing program\n", 18executing program
) = 18
[pid 21853] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21853] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21853] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21853] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21853] exit_group(0)               = ?
[pid 21853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21853, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20995", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20995", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20995/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20995/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20995/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20995")                        = 0
mkdir("./20996", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21854
./strace-static-x86_64: Process 21854 attached
[pid 21854] set_robust_list(0x5555589fe660, 24) = 0
[pid 21854] chdir("./20996")            = 0
[pid 21854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21854] setpgid(0, 0)               = 0
[pid 21854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21854] write(3, "1000", 4)         = 4
[pid 21854] close(3)                    = 0
[pid 21854] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21854] write(1, "executing program\n", 18) = 18
executing program
[pid 21854] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21854] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21854] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21854] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21854] exit_group(0)               = ?
[pid 21854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20996", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20996", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20996/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20996/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20996/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20996")                        = 0
mkdir("./20997", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21855
./strace-static-x86_64: Process 21855 attached
[pid 21855] set_robust_list(0x5555589fe660, 24) = 0
[pid 21855] chdir("./20997")            = 0
[pid 21855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21855] setpgid(0, 0)               = 0
[pid 21855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21855] write(3, "1000", 4)         = 4
[pid 21855] close(3)                    = 0
[pid 21855] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21855] write(1, "executing program\n", 18executing program
) = 18
[pid 21855] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21855] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21855] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21855] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21855] exit_group(0)               = ?
[pid 21855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21855, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20997", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20997", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20997/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20997/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20997/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20997")                        = 0
mkdir("./20998", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21856
./strace-static-x86_64: Process 21856 attached
[pid 21856] set_robust_list(0x5555589fe660, 24) = 0
[pid 21856] chdir("./20998")            = 0
[pid 21856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21856] setpgid(0, 0)               = 0
[pid 21856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21856] write(3, "1000", 4)         = 4
[pid 21856] close(3)                    = 0
[pid 21856] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21856] write(1, "executing program\n", 18) = 18
[pid 21856] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21856] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21856] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21856] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21856] exit_group(0)               = ?
[pid 21856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20998", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20998", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20998/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20998/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20998/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20998")                        = 0
mkdir("./20999", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21857
./strace-static-x86_64: Process 21857 attached
[pid 21857] set_robust_list(0x5555589fe660, 24) = 0
[pid 21857] chdir("./20999")            = 0
[pid 21857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21857] setpgid(0, 0)               = 0
[pid 21857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21857] write(3, "1000", 4)         = 4
[pid 21857] close(3)                    = 0
[pid 21857] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21857] write(1, "executing program\n", 18executing program
) = 18
[pid 21857] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21857] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21857] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21857] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21857] exit_group(0)               = ?
[pid 21857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21857, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./20999", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./20999", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./20999/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./20999/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./20999/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./20999")                        = 0
mkdir("./21000", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21858
./strace-static-x86_64: Process 21858 attached
[pid 21858] set_robust_list(0x5555589fe660, 24) = 0
[pid 21858] chdir("./21000")            = 0
[pid 21858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21858] setpgid(0, 0)               = 0
[pid 21858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21858] write(3, "1000", 4)         = 4
[pid 21858] close(3)                    = 0
[pid 21858] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21858] write(1, "executing program\n", 18executing program
) = 18
[pid 21858] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21858] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21858] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21858] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21858] exit_group(0)               = ?
[pid 21858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21000", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21000", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21000/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21000/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21000/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21000")                        = 0
mkdir("./21001", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21859
./strace-static-x86_64: Process 21859 attached
[pid 21859] set_robust_list(0x5555589fe660, 24) = 0
[pid 21859] chdir("./21001")            = 0
[pid 21859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21859] setpgid(0, 0)               = 0
[pid 21859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21859] write(3, "1000", 4)         = 4
[pid 21859] close(3)                    = 0
[pid 21859] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21859] write(1, "executing program\n", 18executing program
) = 18
[pid 21859] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21859] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21859] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21859] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21859] exit_group(0)               = ?
[pid 21859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21859, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21001", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21001", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21001/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21001/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21001/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21001")                        = 0
mkdir("./21002", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21860
./strace-static-x86_64: Process 21860 attached
[pid 21860] set_robust_list(0x5555589fe660, 24) = 0
[pid 21860] chdir("./21002")            = 0
[pid 21860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21860] setpgid(0, 0)               = 0
[pid 21860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21860] write(3, "1000", 4)         = 4
[pid 21860] close(3)                    = 0
[pid 21860] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21860] write(1, "executing program\n", 18executing program
) = 18
[pid 21860] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21860] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21860] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21860] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21860] exit_group(0)               = ?
[pid 21860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21002", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21002", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21002/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21002/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21002/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21002")                        = 0
mkdir("./21003", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21861
./strace-static-x86_64: Process 21861 attached
[pid 21861] set_robust_list(0x5555589fe660, 24) = 0
[pid 21861] chdir("./21003")            = 0
[pid 21861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21861] setpgid(0, 0)               = 0
[pid 21861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21861] write(3, "1000", 4)         = 4
[pid 21861] close(3)                    = 0
[pid 21861] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21861] write(1, "executing program\n", 18) = 18
[pid 21861] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21861] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21861] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21861] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21861] exit_group(0)               = ?
[pid 21861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21861, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21003", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21003", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21003/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21003/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21003/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21003")                        = 0
mkdir("./21004", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21862
./strace-static-x86_64: Process 21862 attached
[pid 21862] set_robust_list(0x5555589fe660, 24) = 0
[pid 21862] chdir("./21004")            = 0
[pid 21862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21862] setpgid(0, 0)               = 0
[pid 21862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21862] write(3, "1000", 4)         = 4
[pid 21862] close(3)                    = 0
[pid 21862] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21862] write(1, "executing program\n", 18executing program
) = 18
[pid 21862] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21862] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21862] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21862] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21862] exit_group(0)               = ?
[pid 21862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21004", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21004", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21004/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21004/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21004/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21004")                        = 0
mkdir("./21005", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21863
./strace-static-x86_64: Process 21863 attached
[pid 21863] set_robust_list(0x5555589fe660, 24) = 0
[pid 21863] chdir("./21005")            = 0
[pid 21863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21863] setpgid(0, 0)               = 0
[pid 21863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21863] write(3, "1000", 4)         = 4
[pid 21863] close(3)                    = 0
[pid 21863] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21863] write(1, "executing program\n", 18executing program
) = 18
[pid 21863] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21863] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21863] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21863] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21863] exit_group(0)               = ?
[pid 21863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21863, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21005", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21005", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21005/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21005/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21005/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21005")                        = 0
mkdir("./21006", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21864
./strace-static-x86_64: Process 21864 attached
[pid 21864] set_robust_list(0x5555589fe660, 24) = 0
[pid 21864] chdir("./21006")            = 0
[pid 21864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21864] setpgid(0, 0)               = 0
[pid 21864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21864] write(3, "1000", 4)         = 4
[pid 21864] close(3)                    = 0
[pid 21864] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21864] write(1, "executing program\n", 18executing program
) = 18
[pid 21864] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21864] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21864] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21864] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21864] exit_group(0)               = ?
[pid 21864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21006", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21006", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21006/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21006/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21006/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21006")                        = 0
mkdir("./21007", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21865
./strace-static-x86_64: Process 21865 attached
[pid 21865] set_robust_list(0x5555589fe660, 24) = 0
[pid 21865] chdir("./21007")            = 0
[pid 21865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21865] setpgid(0, 0)               = 0
[pid 21865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21865] write(3, "1000", 4)         = 4
[pid 21865] close(3)                    = 0
[pid 21865] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21865] write(1, "executing program\n", 18executing program
) = 18
[pid 21865] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21865] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21865] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21865] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21865] exit_group(0)               = ?
[pid 21865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21865, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21007", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21007", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21007/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21007/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21007/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21007")                        = 0
mkdir("./21008", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21866
./strace-static-x86_64: Process 21866 attached
[pid 21866] set_robust_list(0x5555589fe660, 24) = 0
[pid 21866] chdir("./21008")            = 0
[pid 21866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21866] setpgid(0, 0)               = 0
[pid 21866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21866] write(3, "1000", 4)         = 4
[pid 21866] close(3)                    = 0
[pid 21866] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21866] write(1, "executing program\n", 18executing program
) = 18
[pid 21866] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21866] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21866] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21866] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21866] exit_group(0)               = ?
[pid 21866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21008", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21008", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21008/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21008/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21008/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21008")                        = 0
mkdir("./21009", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21867
./strace-static-x86_64: Process 21867 attached
[pid 21867] set_robust_list(0x5555589fe660, 24) = 0
[pid 21867] chdir("./21009")            = 0
[pid 21867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21867] setpgid(0, 0)               = 0
[pid 21867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21867] write(3, "1000", 4)         = 4
[pid 21867] close(3)                    = 0
[pid 21867] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21867] write(1, "executing program\n", 18executing program
) = 18
[pid 21867] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21867] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21867] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21867] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21867] exit_group(0)               = ?
[pid 21867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21867, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21009", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21009", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21009/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21009/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21009/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21009")                        = 0
mkdir("./21010", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21868
./strace-static-x86_64: Process 21868 attached
[pid 21868] set_robust_list(0x5555589fe660, 24) = 0
[pid 21868] chdir("./21010")            = 0
[pid 21868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21868] setpgid(0, 0)               = 0
[pid 21868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21868] write(3, "1000", 4)         = 4
[pid 21868] close(3)                    = 0
[pid 21868] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21868] write(1, "executing program\n", 18) = 18
[pid 21868] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21868] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21868] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21868] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21868] exit_group(0)               = ?
[pid 21868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21010", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21010", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21010/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21010/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21010/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21010")                        = 0
mkdir("./21011", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21869
./strace-static-x86_64: Process 21869 attached
[pid 21869] set_robust_list(0x5555589fe660, 24) = 0
[pid 21869] chdir("./21011")            = 0
[pid 21869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21869] setpgid(0, 0)               = 0
[pid 21869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21869] write(3, "1000", 4)         = 4
[pid 21869] close(3)                    = 0
[pid 21869] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21869] write(1, "executing program\n", 18executing program
) = 18
[pid 21869] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21869] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21869] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21869] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21869] exit_group(0)               = ?
[pid 21869] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21869, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21011", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21011", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21011/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21011/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21011/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21011")                        = 0
mkdir("./21012", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21870
./strace-static-x86_64: Process 21870 attached
[pid 21870] set_robust_list(0x5555589fe660, 24) = 0
[pid 21870] chdir("./21012")            = 0
[pid 21870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21870] setpgid(0, 0)               = 0
[pid 21870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21870] write(3, "1000", 4)         = 4
[pid 21870] close(3)                    = 0
[pid 21870] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21870] write(1, "executing program\n", 18) = 18
[pid 21870] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21870] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21870] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21870] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21870] exit_group(0)               = ?
[pid 21870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21012", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21012", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21012/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21012/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21012/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21012")                        = 0
mkdir("./21013", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21871
./strace-static-x86_64: Process 21871 attached
[pid 21871] set_robust_list(0x5555589fe660, 24) = 0
[pid 21871] chdir("./21013")            = 0
[pid 21871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21871] setpgid(0, 0)               = 0
[pid 21871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21871] write(3, "1000", 4)         = 4
[pid 21871] close(3)                    = 0
[pid 21871] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21871] write(1, "executing program\n", 18executing program
) = 18
[pid 21871] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21871] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21871] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21871] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21871] exit_group(0)               = ?
[pid 21871] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21871, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21013", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21013", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21013/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21013/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21013/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21013")                        = 0
mkdir("./21014", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21872
./strace-static-x86_64: Process 21872 attached
[pid 21872] set_robust_list(0x5555589fe660, 24) = 0
[pid 21872] chdir("./21014")            = 0
[pid 21872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21872] setpgid(0, 0)               = 0
[pid 21872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21872] write(3, "1000", 4)         = 4
[pid 21872] close(3)                    = 0
[pid 21872] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21872] write(1, "executing program\n", 18executing program
) = 18
[pid 21872] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21872] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21872] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21872] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21872] exit_group(0)               = ?
[pid 21872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21014", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21014", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21014/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21014/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21014/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21014")                        = 0
mkdir("./21015", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21873
./strace-static-x86_64: Process 21873 attached
[pid 21873] set_robust_list(0x5555589fe660, 24) = 0
[pid 21873] chdir("./21015")            = 0
[pid 21873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21873] setpgid(0, 0)               = 0
[pid 21873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21873] write(3, "1000", 4)         = 4
[pid 21873] close(3)                    = 0
[pid 21873] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21873] write(1, "executing program\n", 18) = 18
[pid 21873] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21873] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21873] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21873] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21873] exit_group(0)               = ?
[pid 21873] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21873, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21015", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21015", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21015/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21015/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21015/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21015")                        = 0
mkdir("./21016", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21874
./strace-static-x86_64: Process 21874 attached
[pid 21874] set_robust_list(0x5555589fe660, 24) = 0
[pid 21874] chdir("./21016")            = 0
[pid 21874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21874] setpgid(0, 0)               = 0
[pid 21874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21874] write(3, "1000", 4)         = 4
[pid 21874] close(3)                    = 0
[pid 21874] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21874] write(1, "executing program\n", 18executing program
) = 18
[pid 21874] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21874] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21874] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21874] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21874] exit_group(0)               = ?
[pid 21874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21016", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21016", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21016/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21016/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21016/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21016")                        = 0
mkdir("./21017", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21875 attached
, child_tidptr=0x5555589fe650) = 21875
[pid 21875] set_robust_list(0x5555589fe660, 24) = 0
[pid 21875] chdir("./21017")            = 0
[pid 21875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21875] setpgid(0, 0)               = 0
[pid 21875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21875] write(3, "1000", 4)         = 4
[pid 21875] close(3)                    = 0
[pid 21875] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21875] write(1, "executing program\n", 18executing program
) = 18
[pid 21875] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21875] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21875] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21875] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21875] exit_group(0)               = ?
[pid 21875] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21875, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21017", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21017", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21017/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21017/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21017/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21017")                        = 0
mkdir("./21018", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21876
./strace-static-x86_64: Process 21876 attached
[pid 21876] set_robust_list(0x5555589fe660, 24) = 0
[pid 21876] chdir("./21018")            = 0
[pid 21876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21876] setpgid(0, 0)               = 0
[pid 21876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21876] write(3, "1000", 4)         = 4
[pid 21876] close(3)                    = 0
[pid 21876] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21876] write(1, "executing program\n", 18executing program
) = 18
[pid 21876] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21876] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21876] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21876] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21876] exit_group(0)               = ?
[pid 21876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21018", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21018", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21018/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21018/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21018/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21018")                        = 0
mkdir("./21019", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21877
./strace-static-x86_64: Process 21877 attached
[pid 21877] set_robust_list(0x5555589fe660, 24) = 0
[pid 21877] chdir("./21019")            = 0
[pid 21877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21877] setpgid(0, 0)               = 0
[pid 21877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21877] write(3, "1000", 4)         = 4
[pid 21877] close(3)                    = 0
[pid 21877] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21877] write(1, "executing program\n", 18executing program
) = 18
[pid 21877] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21877] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21877] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21877] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21877] exit_group(0)               = ?
[pid 21877] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21877, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21019", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21019", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21019/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21019/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21019/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21019")                        = 0
mkdir("./21020", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21878
./strace-static-x86_64: Process 21878 attached
[pid 21878] set_robust_list(0x5555589fe660, 24) = 0
[pid 21878] chdir("./21020")            = 0
[pid 21878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21878] setpgid(0, 0)               = 0
[pid 21878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21878] write(3, "1000", 4)         = 4
[pid 21878] close(3)                    = 0
[pid 21878] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21878] write(1, "executing program\n", 18executing program
) = 18
[pid 21878] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21878] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21878] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21878] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21878] exit_group(0)               = ?
[pid 21878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21020", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21020", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21020/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21020/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21020/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21020")                        = 0
mkdir("./21021", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21879
./strace-static-x86_64: Process 21879 attached
[pid 21879] set_robust_list(0x5555589fe660, 24) = 0
[pid 21879] chdir("./21021")            = 0
[pid 21879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21879] setpgid(0, 0)               = 0
[pid 21879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21879] write(3, "1000", 4)         = 4
[pid 21879] close(3)                    = 0
[pid 21879] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21879] write(1, "executing program\n", 18executing program
) = 18
[pid 21879] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21879] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21879] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21879] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21879] exit_group(0)               = ?
[pid 21879] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21879, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21021", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21021", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21021/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21021/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21021/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21021")                        = 0
mkdir("./21022", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21880
./strace-static-x86_64: Process 21880 attached
[pid 21880] set_robust_list(0x5555589fe660, 24) = 0
[pid 21880] chdir("./21022")            = 0
[pid 21880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21880] setpgid(0, 0)               = 0
[pid 21880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21880] write(3, "1000", 4)         = 4
[pid 21880] close(3)                    = 0
[pid 21880] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21880] write(1, "executing program\n", 18executing program
) = 18
[pid 21880] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21880] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21880] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21880] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21880] exit_group(0)               = ?
[pid 21880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21022", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21022", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21022/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21022/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21022/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21022")                        = 0
mkdir("./21023", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21881
./strace-static-x86_64: Process 21881 attached
[pid 21881] set_robust_list(0x5555589fe660, 24) = 0
[pid 21881] chdir("./21023")            = 0
[pid 21881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21881] setpgid(0, 0)               = 0
[pid 21881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21881] write(3, "1000", 4)         = 4
[pid 21881] close(3)                    = 0
[pid 21881] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21881] write(1, "executing program\n", 18executing program
) = 18
[pid 21881] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21881] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21881] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21881] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21881] exit_group(0)               = ?
[pid 21881] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21881, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21023", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21023", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21023/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21023/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21023/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21023")                        = 0
mkdir("./21024", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21882
./strace-static-x86_64: Process 21882 attached
[pid 21882] set_robust_list(0x5555589fe660, 24) = 0
[pid 21882] chdir("./21024")            = 0
[pid 21882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21882] setpgid(0, 0)               = 0
[pid 21882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21882] write(3, "1000", 4)         = 4
[pid 21882] close(3)                    = 0
[pid 21882] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21882] write(1, "executing program\n", 18executing program
) = 18
[pid 21882] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21882] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21882] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21882] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21882] exit_group(0)               = ?
[pid 21882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21024", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21024", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21024/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21024/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21024/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21024")                        = 0
mkdir("./21025", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21883
./strace-static-x86_64: Process 21883 attached
[pid 21883] set_robust_list(0x5555589fe660, 24) = 0
[pid 21883] chdir("./21025")            = 0
[pid 21883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21883] setpgid(0, 0)               = 0
[pid 21883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21883] write(3, "1000", 4)         = 4
[pid 21883] close(3)                    = 0
[pid 21883] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21883] write(1, "executing program\n", 18executing program
) = 18
[pid 21883] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21883] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21883] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21883] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21883] exit_group(0)               = ?
[pid 21883] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21883, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21025", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21025", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21025/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21025/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21025/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21025")                        = 0
mkdir("./21026", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21884
./strace-static-x86_64: Process 21884 attached
[pid 21884] set_robust_list(0x5555589fe660, 24) = 0
[pid 21884] chdir("./21026")            = 0
[pid 21884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21884] setpgid(0, 0)               = 0
[pid 21884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21884] write(3, "1000", 4)         = 4
[pid 21884] close(3)                    = 0
[pid 21884] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21884] write(1, "executing program\n", 18executing program
) = 18
[pid 21884] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21884] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21884] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21884] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21884] exit_group(0)               = ?
[pid 21884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21026", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21026", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21026/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21026/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21026/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21026")                        = 0
mkdir("./21027", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21885
./strace-static-x86_64: Process 21885 attached
[pid 21885] set_robust_list(0x5555589fe660, 24) = 0
[pid 21885] chdir("./21027")            = 0
[pid 21885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21885] setpgid(0, 0)               = 0
[pid 21885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21885] write(3, "1000", 4)         = 4
[pid 21885] close(3)                    = 0
[pid 21885] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21885] write(1, "executing program\n", 18executing program
) = 18
[pid 21885] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21885] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21885] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21885] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21885] exit_group(0)               = ?
[pid 21885] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21885, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21027", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21027", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21027/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21027/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21027/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21027")                        = 0
mkdir("./21028", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21886
./strace-static-x86_64: Process 21886 attached
[pid 21886] set_robust_list(0x5555589fe660, 24) = 0
[pid 21886] chdir("./21028")            = 0
[pid 21886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21886] setpgid(0, 0)               = 0
[pid 21886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21886] write(3, "1000", 4)         = 4
[pid 21886] close(3)                    = 0
[pid 21886] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21886] write(1, "executing program\n", 18executing program
) = 18
[pid 21886] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21886] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21886] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21886] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21886] exit_group(0)               = ?
[pid 21886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21028", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21028", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21028/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21028/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21028/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21028")                        = 0
mkdir("./21029", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21887
./strace-static-x86_64: Process 21887 attached
[pid 21887] set_robust_list(0x5555589fe660, 24) = 0
[pid 21887] chdir("./21029")            = 0
[pid 21887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21887] setpgid(0, 0)               = 0
[pid 21887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21887] write(3, "1000", 4)         = 4
[pid 21887] close(3)                    = 0
[pid 21887] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21887] write(1, "executing program\n", 18executing program
) = 18
[pid 21887] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21887] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21887] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21887] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21887] exit_group(0)               = ?
[pid 21887] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21887, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21029", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21029", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21029/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21029/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21029/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21029")                        = 0
mkdir("./21030", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21888
./strace-static-x86_64: Process 21888 attached
[pid 21888] set_robust_list(0x5555589fe660, 24) = 0
[pid 21888] chdir("./21030")            = 0
[pid 21888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21888] setpgid(0, 0)               = 0
[pid 21888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21888] write(3, "1000", 4)         = 4
[pid 21888] close(3)                    = 0
[pid 21888] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21888] write(1, "executing program\n", 18) = 18
[pid 21888] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21888] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21888] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21888] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21888] exit_group(0)               = ?
[pid 21888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21030", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21030", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21030/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21030/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21030/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21030")                        = 0
mkdir("./21031", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21889
./strace-static-x86_64: Process 21889 attached
[pid 21889] set_robust_list(0x5555589fe660, 24) = 0
[pid 21889] chdir("./21031")            = 0
[pid 21889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21889] setpgid(0, 0)               = 0
[pid 21889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21889] write(3, "1000", 4)         = 4
[pid 21889] close(3)                    = 0
[pid 21889] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21889] write(1, "executing program\n", 18executing program
) = 18
[pid 21889] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21889] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21889] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21889] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21889] exit_group(0)               = ?
[pid 21889] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21889, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21031", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21031", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21031/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21031/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21031/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21031")                        = 0
mkdir("./21032", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21890
./strace-static-x86_64: Process 21890 attached
[pid 21890] set_robust_list(0x5555589fe660, 24) = 0
[pid 21890] chdir("./21032")            = 0
[pid 21890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21890] setpgid(0, 0)               = 0
[pid 21890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21890] write(3, "1000", 4)         = 4
[pid 21890] close(3)                    = 0
[pid 21890] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21890] write(1, "executing program\n", 18) = 18
[pid 21890] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21890] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21890] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21890] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21890] exit_group(0)               = ?
[pid 21890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21032", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21032", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21032/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21032/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21032/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21032")                        = 0
mkdir("./21033", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21891
./strace-static-x86_64: Process 21891 attached
[pid 21891] set_robust_list(0x5555589fe660, 24) = 0
[pid 21891] chdir("./21033")            = 0
[pid 21891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21891] setpgid(0, 0)               = 0
[pid 21891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21891] write(3, "1000", 4)         = 4
[pid 21891] close(3)                    = 0
[pid 21891] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21891] write(1, "executing program\n", 18executing program
) = 18
[pid 21891] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21891] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21891] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21891] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21891] exit_group(0)               = ?
[pid 21891] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21891, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21033", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21033", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21033/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21033/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21033/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21033")                        = 0
mkdir("./21034", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21892
./strace-static-x86_64: Process 21892 attached
[pid 21892] set_robust_list(0x5555589fe660, 24) = 0
[pid 21892] chdir("./21034")            = 0
[pid 21892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21892] setpgid(0, 0)               = 0
[pid 21892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21892] write(3, "1000", 4)         = 4
[pid 21892] close(3)                    = 0
[pid 21892] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21892] write(1, "executing program\n", 18executing program
) = 18
[pid 21892] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21892] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21892] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21892] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21892] exit_group(0)               = ?
[pid 21892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21034", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21034", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21034/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21034/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21034/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21034")                        = 0
mkdir("./21035", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21893
./strace-static-x86_64: Process 21893 attached
[pid 21893] set_robust_list(0x5555589fe660, 24) = 0
[pid 21893] chdir("./21035")            = 0
[pid 21893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21893] setpgid(0, 0)               = 0
[pid 21893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21893] write(3, "1000", 4)         = 4
[pid 21893] close(3)                    = 0
[pid 21893] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21893] write(1, "executing program\n", 18executing program
) = 18
[pid 21893] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21893] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21893] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21893] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21893] exit_group(0)               = ?
[pid 21893] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21893, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21035", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21035", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21035/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21035/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21035/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21035")                        = 0
mkdir("./21036", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21894
./strace-static-x86_64: Process 21894 attached
[pid 21894] set_robust_list(0x5555589fe660, 24) = 0
[pid 21894] chdir("./21036")            = 0
[pid 21894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21894] setpgid(0, 0)               = 0
[pid 21894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21894] write(3, "1000", 4)         = 4
[pid 21894] close(3)                    = 0
[pid 21894] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21894] write(1, "executing program\n", 18executing program
) = 18
[pid 21894] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21894] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21894] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21894] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21894] exit_group(0)               = ?
[pid 21894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21036", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21036", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21036/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21036/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21036/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21036")                        = 0
mkdir("./21037", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 21895 attached
, child_tidptr=0x5555589fe650) = 21895
[pid 21895] set_robust_list(0x5555589fe660, 24) = 0
[pid 21895] chdir("./21037")            = 0
[pid 21895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21895] setpgid(0, 0)               = 0
[pid 21895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21895] write(3, "1000", 4)         = 4
[pid 21895] close(3)                    = 0
[pid 21895] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21895] write(1, "executing program\n", 18executing program
) = 18
[pid 21895] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21895] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21895] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21895] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21895] exit_group(0)               = ?
[pid 21895] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21895, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21037", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21037", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21037/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21037/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21037/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21037")                        = 0
mkdir("./21038", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21896
./strace-static-x86_64: Process 21896 attached
[pid 21896] set_robust_list(0x5555589fe660, 24) = 0
[pid 21896] chdir("./21038")            = 0
[pid 21896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21896] setpgid(0, 0)               = 0
[pid 21896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21896] write(3, "1000", 4)         = 4
[pid 21896] close(3)                    = 0
[pid 21896] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21896] write(1, "executing program\n", 18executing program
) = 18
[pid 21896] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21896] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21896] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21896] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21896] exit_group(0)               = ?
[pid 21896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21038", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21038", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21038/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21038/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21038/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21038")                        = 0
mkdir("./21039", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21897
./strace-static-x86_64: Process 21897 attached
[pid 21897] set_robust_list(0x5555589fe660, 24) = 0
[pid 21897] chdir("./21039")            = 0
[pid 21897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21897] setpgid(0, 0)               = 0
[pid 21897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21897] write(3, "1000", 4)         = 4
[pid 21897] close(3)                    = 0
[pid 21897] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21897] write(1, "executing program\n", 18) = 18
[pid 21897] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21897] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21897] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21897] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21897] exit_group(0)               = ?
[pid 21897] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21897, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21039", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21039", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21039/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21039/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21039/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21039")                        = 0
mkdir("./21040", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21898
./strace-static-x86_64: Process 21898 attached
[pid 21898] set_robust_list(0x5555589fe660, 24) = 0
[pid 21898] chdir("./21040")            = 0
[pid 21898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21898] setpgid(0, 0)               = 0
[pid 21898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21898] write(3, "1000", 4)         = 4
[pid 21898] close(3)                    = 0
[pid 21898] symlink("/dev/binderfs", "./binderfs") = 0
executing program
[pid 21898] write(1, "executing program\n", 18) = 18
[pid 21898] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21898] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21898] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21898] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21898] exit_group(0)               = ?
[pid 21898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21040", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21040", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21040/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21040/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21040/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21040")                        = 0
mkdir("./21041", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21899
./strace-static-x86_64: Process 21899 attached
[pid 21899] set_robust_list(0x5555589fe660, 24) = 0
[pid 21899] chdir("./21041")            = 0
[pid 21899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21899] setpgid(0, 0)               = 0
[pid 21899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21899] write(3, "1000", 4)         = 4
[pid 21899] close(3)                    = 0
[pid 21899] symlink("/dev/binderfs", "./binderfs") = 0
[pid 21899] write(1, "executing program\n", 18executing program
) = 18
[pid 21899] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21899] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21899] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21899] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21899] exit_group(0)               = ?
[pid 21899] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21899, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21041", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21041", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21041/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21041/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlink("./21041/binderfs")              = 0
getdents64(3, 0x5555589ff6f0 /* 0 entries */, 32768) = 0
close(3)                                = 0
rmdir("./21041")                        = 0
mkdir("./21042", 0777)                  = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555589fe650) = 21900
./strace-static-x86_64: Process 21900 attached
[pid 21900] set_robust_list(0x5555589fe660, 24) = 0
[pid 21900] chdir("./21042")            = 0
[pid 21900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 21900] setpgid(0, 0)               = 0
[pid 21900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 21900] write(3, "1000", 4)         = 4
[pid 21900] close(3)                    = 0
[pid 21900] symlink("/dev/binderfs", "./binderfs"executing program
) = 0
[pid 21900] write(1, "executing program\n", 18) = 18
[pid 21900] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 21900] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 21900] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 21900] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 21900] exit_group(0)               = ?
[pid 21900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
umount2("./21042", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
openat(AT_FDCWD, "./21042", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0x5555589ff6f0 /* 3 entries */, 32768) = 80
umount2("./21042/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
newfstatat(AT_FDCWD, "./21042/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0