2.6.32-longterm review patch. If anyone has any objections, please let us know.
------------------
From: Herbert Xu <herb...@gondor.apana.org.au>
commit 66c46d741e2e60f0e8b625b80edb0ab820c46d7a upstream.
On older kernels the VLAN code may zero skb->dev before dropping
it and causing it to be reused by GRO.
Unfortunately we didn't reset skb->dev in that case which causes
the next GRO user to get a bogus skb->dev pointer.
This particular problem no longer happens with the current upstream
kernel due to changes in VLAN processing.
However, for correctness we should still reset the skb->dev pointer
in the GRO reuse function in case a future user does the same thing.
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Brandon Philips <bphil...@suse.de>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
---
net/core/dev.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2614,6 +2614,7 @@ void napi_reuse_skb(struct napi_struct *
{
__skb_pull(skb, skb_headlen(skb));
skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb));
+ skb->dev = napi->dev;
napi->skb = skb;
}
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