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| author | Wei Wang <weiwan@google.com> | 2017-05-18 11:22:33 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-21 13:24:47 -0400 |
| commit | 499350a5a6e7512d9ed369ed63a4244b6536f4f8 (patch) | |
| tree | 4b81c6f4df9119704c570e73a6cdde12094e1c89 /net/ipv4/arp.c | |
| parent | 23416e230416a9201561f1db553b1515e9959f6a (diff) | |
| download | linux-499350a5a6e7512d9ed369ed63a4244b6536f4f8.tar.bz2 | |
tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0
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>
Diffstat (limited to 'net/ipv4/arp.c')
0 files changed, 0 insertions, 0 deletions