From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sun, 30 Jan 2011 04:44:54 +0000 (-0800)
Subject: gro: Reset dev pointer on reuse
X-Git-Tag: v2.6.38-rc4~15^2~46
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66c46d741e2e60f0e8b625b80edb0ab820c46d7a;p=pandora-kernel.git

gro: Reset dev pointer on reuse

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 <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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