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: Michael S. Tsirkin <mst@redhat.com>
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 2764e0f..2f6185c 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -177,8 +177,8 @@
break;
}
if (err != len)
- pr_err("Truncated TX packet: "
- " len %d != %zd\n", err, len);
+ pr_debug("Truncated TX packet: "
+ " len %d != %zd\n", err, len);
vhost_add_used_and_signal(&net->dev, vq, head, 0);
total_len += len;
if (unlikely(total_len >= VHOST_NET_WEIGHT)) {
@@ -275,8 +275,8 @@
}
/* TODO: Should check and handle checksum. */
if (err > len) {
- pr_err("Discarded truncated rx packet: "
- " len %d > %zd\n", err, len);
+ pr_debug("Discarded truncated rx packet: "
+ " len %d > %zd\n", err, len);
vhost_discard_vq_desc(vq);
continue;
}