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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2010-07-19 01:16:18 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-08-02 10:20:53 -0700 |
| commit | dc6330590fbd5fad17f06663c5f0bed834054b2b (patch) | |
| tree | c9509ba42aa68e848808152e40a90f48359df22d /drivers/rtc | |
| parent | d7091c2bbded22430db06e5172a3b4c3ee7f3cd8 (diff) | |
| download | lwn-dc6330590fbd5fad17f06663c5f0bed834054b2b.tar.gz lwn-dc6330590fbd5fad17f06663c5f0bed834054b2b.zip | |
tcp: fix crash in tcp_xmit_retransmit_queue
commit 45e77d314585869dfe43c82679f7e08c9b35b898 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/rtc')
0 files changed, 0 insertions, 0 deletions