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| author | Eric Dumazet <edumazet@google.com> | 2013-01-10 00:59:09 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-11 02:09:57 +0400 |
| commit | f26845b43c75d3f32f98d194c1327b5b1e6b3fb0 (patch) | |
| tree | 8110b37fa3ee70bec5b48db227aa73b55c2e51b8 /net/ipv4/ipconfig.c | |
| parent | ff905b1e4aad8ccbbb0d42f7137f19482742ff07 (diff) | |
| download | linux-f26845b43c75d3f32f98d194c1327b5b1e6b3fb0.tar.xz | |
tcp: fix splice() and tcp collapsing interaction
Under unusual circumstances, TCP collapse can split a big GRO TCP packet
while its being used in a splice(socket->pipe) operation.
skb_splice_bits() releases the socket lock before calling
splice_to_pipe().
[ 1081.353685] WARNING: at net/ipv4/tcp.c:1330 tcp_cleanup_rbuf+0x4d/0xfc()
[ 1081.371956] Hardware name: System x3690 X5 -[7148Z68]-
[ 1081.391820] cleanup rbuf bug: copied AD3BCF1 seq AD370AF rcvnxt AD3CF13
To fix this problem, we must eat skbs in tcp_recv_skb().
Remove the inline keyword from tcp_recv_skb() definition since
it has three call sites.
Reported-by: Christian Becker <c.becker@traviangames.com>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ipconfig.c')
0 files changed, 0 insertions, 0 deletions