linux-master/kernel/sys.c

444 	kgid_t kgid;
446 	kgid = make_kgid(ns, gid);
447 	if (!gid_valid(kgid))
457 		new->gid = new->egid = new->sgid = new->fsgid = kgid;
458 	else if (gid_eq(kgid, old->gid) || gid_eq(kgid, old->sgid))
459 		new->egid = new->fsgid = kgid;
912 	kgid_t kgid;
917 	kgid = make_kgid(old->user_ns, gid);
918 	if (!gid_valid(kgid))
925 	if (gid_eq(kgid, old->gid)  || gid_eq(kgid, old->egid)  ||
926 	    gid_eq(kgid, old->sgid) || gid_eq(kgid, old->fsgid) ||
928 		if (!gid_eq(kgid, old->fsgid)) {
929 			new->fsgid = kgid;