linux-hardening - [PATCH 136/141] virtio_net: Fix fall-through warnings for Clang

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Message-ID: <cb9b9534572bc476f4fb7b49a73dc8646b780c84.1605896060.git.gustavoars@kernel.org>
Date:   Fri, 20 Nov 2020 12:40:44 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 136/141] virtio_net: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a goto statement instead of letting the code fall
through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/net/virtio_net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 21b71148c532..fd326dc586aa 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -732,6 +732,7 @@ static struct sk_buff *receive_small(struct net_device *dev,
 			fallthrough;
 		case XDP_ABORTED:
 			trace_xdp_exception(vi->dev, xdp_prog, act);
+			goto err_xdp;
 		case XDP_DROP:
 			goto err_xdp;
 		}
-- 
2.27.0