https://github.com/torvalds/linux
Revision 69c0cab120a85471054614418b447349caba22d7 authored by Herbert Xu on 17 November 2009, 13:18:18 UTC, committed by David S. Miller on 17 November 2009, 13:18:18 UTC
When we've merged skb's with page frags, and subsequently receive
a trailer skb (< MSS) that is not completely non-linear (this can
occur on Intel NICs if the packet size falls below the threshold),
GRO ends up producing an illegal GSO skb with a frag_list.

This is harmless unless the skb is then forwarded through an
interface that requires software GSO, whereupon the GSO code
will BUG.

This patch detects this case in GRO and avoids merging the
trailer skb.

Reported-by: Mark Wagner <mwagner@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent e54d551
History
Tip revision: 69c0cab120a85471054614418b447349caba22d7 authored by Herbert Xu on 17 November 2009, 13:18:18 UTC
gro: Fix illegal merging of trailer trash
Tip revision: 69c0cab
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