--- m/net/core/dev.c
+++ n/net/core/dev.c
@@ -5041,7 +5041,10 @@ static __latent_entropy void net_tx_acti
 
 			if (!(q->flags & TCQ_F_NOLOCK)) {
 				root_lock = qdisc_lock(q);
-				spin_lock(root_lock);
+				if (!spin_trylock(root_lock)) {
+					__netif_reschedule(q);
+					continue;
+				}
 			} else if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED,
 						     &q->state))) {
 				/* There is a synchronize_net() between