diff options
| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2010-07-19 01:16:18 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-07-19 12:43:49 -0700 |
| commit | 45e77d314585869dfe43c82679f7e08c9b35b898 (patch) | |
| tree | 73c6322600e47a44a8c171abff392a61eac53be9 /net/ipv4/tcp_westwood.c | |
| parent | b508998f665ee6d6a15eae11be258c3e94c33562 (diff) | |
tcp: fix crash in tcp_xmit_retransmit_queue
It can happen that there are no packets in queue while calling
tcp_xmit_retransmit_queue(). tcp_write_queue_head() then returns
NULL and that gets deref'ed to get sacked into a local var.
There is no work to do if no packets are outstanding so we just
exit early.
This oops was introduced by 08ebd1721ab8fd (tcp: remove tp->lost_out
guard to make joining diff nicer).
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Reported-by: Lennart Schulte <lennart.schulte@nets.rwth-aachen.de>
Tested-by: Lennart Schulte <lennart.schulte@nets.rwth-aachen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_westwood.c')
0 files changed, 0 insertions, 0 deletions