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Date: Wed, 29 Mar 2017 15:37:37 +0300 From: "Michael S. Tsirkin" <mst@...hat.com> To: linux-kernel@...r.kernel.org Cc: John Fastabend <john.fastabend@...il.com>, Jason Wang <jasowang@...hat.com>, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org Subject: [PATCH] virtio_net: fix mergeable bufs error handling 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 <john.fastabend@...il.com> Signed-off-by: Michael S. Tsirkin <mst@...hat.com> --- 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
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