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Jarek Poplawski
64289c8e68
The patch: "gro: fix different skb headrooms" in its part:
"2) allocate a minimal skb for head of frag_list" is buggy. The copied
skb has p->data set at the ip header at the moment, and skb_gro_offset
is the length of ip + tcp headers. So, after the change the length of
mac header is skipped. Later skb_set_mac_header() sets it into the
NET_SKB_PAD area (if it's long enough) and ip header is misaligned at
NET_SKB_PAD + NET_IP_ALIGN offset. There is no reason to assume the
original skb was wrongly allocated, so let's copy it as it was.
bugzilla : https://bugzilla.kernel.org/show_bug.cgi?id=16626
fixes commit: 3d3be4333f
Reported-by: Plamen Petrov <[email protected]>
Signed-off-by: Jarek Poplawski <[email protected]>
CC: Eric Dumazet <[email protected]>
Acked-by: Eric Dumazet <[email protected]>
Tested-by: Plamen Petrov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>