diff options
| author | Wei Wang <weiwan@google.com> | 2017-05-18 11:22:33 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-20 08:19:55 +0200 |
| commit | a10c510179b369f7d1e8cf77f43ee2db900c1ac9 (patch) | |
| tree | b1c6c0059fc806abfccd6b29855fc69caa05bf7b /include/linux/netdevice.h | |
| parent | a6e51fda71a205fbd8f7b98da799c46e563c3db1 (diff) | |
tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0
[ Upstream commit 499350a5a6e7512d9ed369ed63a4244b6536f4f8 ]
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/netdevice.h')
0 files changed, 0 insertions, 0 deletions