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From:   Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: [PATCH] virtio_net: Remove BUG() to aviod machine dead
To:     mst@redhat.com, jasowang@redhat.com, davem@davemloft.net,
        kuba@kernel.org
Cc:     virtualization@lists.linux-foundation.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
Message-ID: <a351fbe1-0233-8515-2927-adc826a7fb94@linux.alibaba.com>
Date:   Tue, 18 May 2021 17:46:56 +0800
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When met error, we output a print to avoid a BUG().

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
  drivers/net/virtio_net.c | 5 ++---
  1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index c921ebf3ae82..a66174d13e81 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1647,9 +1647,8 @@ static int xmit_skb(struct send_queue *sq, struct 
sk_buff *skb)
  		hdr = skb_vnet_hdr(skb);

  	if (virtio_net_hdr_from_skb(skb, &hdr->hdr,
-				    virtio_is_little_endian(vi->vdev), false,
-				    0))
-		BUG();
+				virtio_is_little_endian(vi->vdev), false, 0))
+		return -EPROTO;

  	if (vi->mergeable_rx_bufs)
  		hdr->num_buffers = 0;
-- 
2.17.1