tcp-repair: Handle zero-length data put in rcv queue
authorPavel Emelyanov <xemul@parallels.com>
Mon, 29 Oct 2012 05:05:33 +0000 (05:05 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sat, 3 Nov 2012 02:01:45 +0000 (22:01 -0400)
commitc454e6111d1ef4268fe98e87087216e51c2718c3
tree76551a3f8a02dc4f8c492e056f9cddc9f7d6243f
parenta4d7e485bca65bd516fced77b03f92419308df72
tcp-repair: Handle zero-length data put in rcv queue

When sending data into a tcp socket in repair state we should check
for the amount of data being 0 explicitly. Otherwise we'll have an skb
with seq == end_seq in rcv queue, but tcp doesn't expect this to happen
(in particular a warn_on in tcp_recvmsg shoots).

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Reported-by: Giorgos Mavrikas <gmavrikas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_input.c