From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: [PATCH] virtio_net: fix mergeable bufs error handling Date: Wed, 29 Mar 2017 15:37:37 +0300 Message-ID: <1490791050-22046-1-git-send-email-mst@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: John Fastabend , Jason Wang , virtualization@lists.linux-foundation.org, netdev@vger.kernel.org To: linux-kernel@vger.kernel.org Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On xdp error we try to free head_skb without having initialized it, that's clearly bogus. Fixes: f600b6905015 ("virtio_net: Add XDP support") Cc: John Fastabend Signed-off-by: Michael S. Tsirkin --- 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 11773d6..e0fb3707 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -570,7 +570,7 @@ static struct sk_buff *receive_mergeable(struct net_device *dev, u16 num_buf; struct page *page; int offset; - struct sk_buff *head_skb, *curr_skb; + struct sk_buff *head_skb = NULL, *curr_skb; struct bpf_prog *xdp_prog; unsigned int truesize; -- MST