3.16.44-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Alexey Kodanev <[email protected]> commit eee2faabc63d863a129000b698a2bca54dff643d upstream. We can get SYN with zero tsecr, don't apply offset in this case. Fixes: ee684b6f2830 ("tcp: send packets with a socket timestamp") Signed-off-by: Alexey Kodanev <[email protected]> Acked-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- net/ipv4/tcp_minisocks.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -101,7 +101,8 @@ tcp_timewait_state_process(struct inet_t tcp_parse_options(skb, &tmp_opt, 0, NULL); if (tmp_opt.saw_tstamp) { - tmp_opt.rcv_tsecr -= tcptw->tw_ts_offset; + if (tmp_opt.rcv_tsecr) + tmp_opt.rcv_tsecr -= tcptw->tw_ts_offset; tmp_opt.ts_recent = tcptw->tw_ts_recent; tmp_opt.ts_recent_stamp = tcptw->tw_ts_recent_stamp; paws_reject = tcp_paws_reject(&tmp_opt, th->rst);
