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Commit 95c0ec6a authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

vhost: avoid pr_err on condition guest can trigger 



Guest can trigger packet truncation by posting
a very short buffer and disabling buffer merging.
Convert pr_err to pr_debug to avoid log from filling
up when this happens.

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 1680e906

drivers/vhost/net.c

+4 −4
Original line number Diff line number Diff line
@@ -177,7 +177,7 @@ static void handle_tx(struct vhost_net *net) 
			break;

		}

		if (err != len)

			pr_err("Truncated TX packet: "

			pr_debug("Truncated TX packet: "

				 " len %d != %zd\n", err, len);

		vhost_add_used_and_signal(&net->dev, vq, head, 0);

		total_len += len;
@@ -275,7 +275,7 @@ static void handle_rx(struct vhost_net *net) 
		}

		/* TODO: Should check and handle checksum. */

		if (err > len) {

			pr_err("Discarded truncated rx packet: "

			pr_debug("Discarded truncated rx packet: "

				 " len %d > %zd\n", err, len);

			vhost_discard_vq_desc(vq);

			continue;