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| author |   Patrick McHardy <kaber@trash.net> | 2009-12-01 15:53:57 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-12-01 15:53:57 -0800 |
| commit | b2722b1c3a893ec6021508da15b32282ec79f4da (patch) | |
| tree | b3f3fbf1d9b2c80bdc2d1a7a7786498fc2b62d64 /mm | |
| parent | Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ (diff) | |
| download | linux-dev-b2722b1c3a893ec6021508da15b32282ec79f4da.tar.xz linux-dev-b2722b1c3a893ec6021508da15b32282ec79f4da.zip | |
ip_fragment: also adjust skb->truesize for packets not owned by a socket
When a large packet gets reassembled by ip_defrag(), the head skb
accounts for all the fragments in skb->truesize. If this packet is
refragmented again, skb->truesize is not re-adjusted to reflect only
the head size since its not owned by a socket. If the head fragment
then gets recycled and reused for another received fragment, it might
exceed the defragmentation limits due to its large truesize value.
skb_recycle_check() explicitly checks for linear skbs, so any recycled
skb should reflect its true size in skb->truesize. Change ip_fragment()
to also adjust the truesize value of skbs not owned by a socket.
Reported-and-tested-by: Ben Menchaca <ben@bigfootnetworks.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions