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authorHerbert Xu <herbert@gondor.apana.org.au>2009-04-17 02:34:38 -0700
committerDavid S. Miller <davem@davemloft.net>2009-04-17 02:34:38 -0700
commita0a69a0106dab8d20596f97f6674bed3b394d1ee (patch)
tree2477a32cab5f8afdb1c158f0b151048ee7afc594 /net/bluetooth
parent9dd014eb9804f19d6230c3cbc10fa25f5416bda7 (diff)
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gro: Fix use after free in tcp_gro_receive
After calling skb_gro_receive skb->len can no longer be relied on since if the skb was merged using frags, then its pages will have been removed and the length reduced. This caused tcp_gro_receive to prematurely end merging which resulted in suboptimal performance with ixgbe. The fix is to store skb->len on the stack. 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>
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