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authorSteffen Klassert <steffen.klassert@secunet.com>2019-04-02 08:16:03 +0200
committerDavid S. Miller <davem@davemloft.net>2019-04-04 06:40:52 +0200
commit0ab03f353d3613ea49d1f924faf98559003670a8 (patch)
treeab0fa8ad04d27c2bd711bcd8b52f5eb3b628624c /.mailmap
parentMerge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirshe... (diff)
downloadlinux-0ab03f353d3613ea49d1f924faf98559003670a8.tar.xz
linux-0ab03f353d3613ea49d1f924faf98559003670a8.zip
net-gro: Fix GRO flush when receiving a GSO packet.
Currently we may merge incorrectly a received GSO packet or a packet with frag_list into a packet sitting in the gro_hash list. skb_segment() may crash case because the assumptions on the skb layout are not met. The correct behaviour would be to flush the packet in the gro_hash list and send the received GSO packet directly afterwards. Commit d61d072e87c8e ("net-gro: avoid reorders") sets NAPI_GRO_CB(skb)->flush in this case, but this is not checked before merging. This patch makes sure to check this flag and to not merge in that case. Fixes: d61d072e87c8e ("net-gro: avoid reorders") Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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