Messages in this thread Patch in this message | | | From | Yunjian Wang <> | Subject | [PATCH net] vhost_net: don't continue to call the recvmsg when meet errors | Date | Wed, 30 Nov 2016 20:10:57 +0800 |
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When we meet an error(err=-EBADFD) recvmsg, the error handling in vhost handle_rx() will continue. This will cause a soft CPU lockup in vhost thread.
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com> --- drivers/vhost/net.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 5dc128a..edc470b 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -717,6 +717,9 @@ static void handle_rx(struct vhost_net *net) pr_debug("Discarded rx packet: " " len %d, expected %zd\n", err, sock_len); vhost_discard_vq_desc(vq, headcount); + /* Don't continue to do, when meet errors. */ + if (err < 0) + goto out; continue; } /* Supply virtio_net_hdr if VHOST_NET_F_VIRTIO_NET_HDR */ -- 1.9.5.msysgit.1
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