Upstream: 66c46d741e2e60f0e8b625b80edb0ab820c46d7a 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 <[email protected]> Signed-off-by: David S. Miller <[email protected]> --- net/core/dev.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index 24ea2d7..93e44db 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3424,6 +3424,7 @@ static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb) __skb_pull(skb, skb_headlen(skb)); skb_reserve(skb, NET_IP_ALIGN - skb_headroom(skb)); skb->vlan_tci = 0; + skb->dev = napi->dev; napi->skb = skb; } -- 1.7.3.4 _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
