TODO: kthread fix

for tiann#2757

Author: backslashxx

kernel/core_hook.c

@@ -143,12 +143,6 @@ void escape_to_root(void)
 		return;
 	}
 
-	if (cred->euid.val == 0) {
-		pr_warn("Already root, don't escape!\n");
-		abort_creds(cred);
-		return;
-	}
-
 	struct root_profile *profile = ksu_get_root_profile(cred->uid.val);
 
 	cred->uid.val = profile->uid;

kernel/throne_tracker.c

@@ -657,6 +657,9 @@ static void track_throne_function()
 static int throne_tracker_thread(void *data)
 {
 	pr_info("%s: pid: %d started\n", __func__, current->pid);
+	// for the kthread, we need to escape to root
+	// since it does not inherit the caller's context.
+	escape_to_root();
 	track_throne_function();
 	throne_thread = NULL;
 	smp_mb();