Thread (1 message) flat view 1 message, 1 author, 2021-06-06

Re: [PATCH] [v2] virtio_net: Remove BUG() to avoid machine dead

From: Leon Romanovsky <leon@kernel.org>
Date: 2021-06-06 04:49:15
Also in: lkml, netdev

On Sat, Jun 05, 2021 at 11:31:00AM -0400, Xianting Tian wrote:
quoted hunk
From: Xianting Tian <redacted>

We should not directly BUG() when there is hdr error, it is
better to output a print when such error happens. Currently,
the caller of xmit_skb() already did it.

Signed-off-by: Xianting Tian <redacted>
---
 drivers/net/virtio_net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 9b6a4a8..7f11ea4 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1623,7 +1623,7 @@ static int xmit_skb(struct send_queue *sq, struct sk_buff *skb)
 	if (virtio_net_hdr_from_skb(skb, &hdr->hdr,
 				    virtio_is_little_endian(vi->vdev), false,
 				    0))
-		BUG();
+		return -EPROTO;
Yeah, as we discussed, BUG*() macros in non-core code that checks
in-kernel API better to be deleted.

Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
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