kernel/port: Handle mutex_lock returning an error status code.

This can occur if the mutex in question is destroyed while we are waiting for it.
2019-11-23 15:08:27 -05:00
parent 3c47c28a67
commit 057719ef90
1 changed files with 4 additions and 3 deletions
@@ -633,9 +633,10 @@ get_locked_port(port_id id) GCC_2_NRV(portRef)
 		portRef.SetTo(sPorts.Lookup(id));
 	}
-	if (portRef != NULL && portRef->state == Port::kActive)
+	if (portRef != NULL && portRef->state == Port::kActive) {
-		mutex_lock(&portRef->lock);
+		if (mutex_lock(&portRef->lock) != B_OK)
-	else
+			portRef.Unset();
 	} else
 		portRef.Unset();
 	return portRef;