diff options
| author | Wei Wang <weiwan@google.com> | 2017-05-18 11:22:33 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2017-11-06 15:29:43 +0100 |
| commit | 03691822a5914225161bfffcea41349c281571c1 (patch) | |
| tree | a29a53c072329a87f307a581f256f2f52a9f304e /scripts/const_structs.checkpatch | |
| parent | 8b3e46bb077b62a006a23d2ea1ba228b5829ddd2 (diff) | |
tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0
commit 499350a5a6e7512d9ed369ed63a4244b6536f4f8 upstream.
When tcp_disconnect() is called, inet_csk_delack_init() sets
icsk->icsk_ack.rcv_mss to 0.
This could potentially cause tcp_recvmsg() => tcp_cleanup_rbuf() =>
__tcp_select_window() call path to have division by 0 issue.
So this patch initializes rcv_mss to TCP_MIN_MSS instead of 0.
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'scripts/const_structs.checkpatch')
0 files changed, 0 insertions, 0 deletions