Hello, this is not a issue, just a error in ptrace.

run script:
./runprog --add-readable "" --add-readable-raw "" --add-writable "" --add-writable-raw "" --allow-proc=true
--err "" --in "" --memfd=false --ml 10000 --ol 10 --sl 1024 --out "" --runner "ptrace"
--show-trace-details=true --tl 100 --rtl 200 --type "python3" --unsafe=false /usr/bin/python3 server_nochain.py --ip 10.10.22.7 --world_size 3 --round 6

The server_nochain.py is a distrbuted training python program writed with pytorch, the prototcol is Gloo. usr/bin/python3 server_nochain.py --ip 10.10.22.7 --world_size 3 --round 6 running ok.

There is a error in ptrace:
sl = self._semlock = _multiprocessing.SemLock(kind, value, maxvalue, aa, unlink_now)
PermissionError: [Errno 13] Permission denied

Semaphore lock involves shm, sem and /dev/shm/ directory Read/Write, the Allows of the config.go is:
// default write permission files
defaultWritableFiles = []string{
"/dev/null", "/tmp/", "/var/tmp/", "/dev/shm/", "/home/k8s01/fedlab/",
"/usr/lib/python3.10/multiprocessing/", "/home/k8s01/.local/lib/",
"/proc/self/"}

defaultSyscallAllows = []string{
// new for sem_open
	"shmget", "shmat", "shmctl", "shmdt",
	"semget", "semop", "semctl", "semtimedop", "epoll_create1", "poll", "sched_setaffinity", "mbind", "prctl", "io_cancel",

"python3": {
	Syscall: SyscallConfig{
	ExtraAllow: []string{
    	    "futex", "getdents", "getdents64", "prlimit64", "getpid", "sysinfo", "getrandom", "uname", "clone3",
	    "set_tid_address", "set_robust_list", "getuid", "gettid", "geteuid", "getegid", "getgid",
	    "socket", "bind", "listen", "accept", "connect", "sendto", "recvfrom", "shutdown", "pipe", "pipe2",
	     "clock_nanosleep", "wait4", "rseq",
	},

would you please give me some advices, Thanks！