tree 008b9f5e2820e85f881910bff5e21921eaa260db
parent f6773c5e95a6dc1af82157d4e96e412dee3abf31
author Eric Dumazet <edumazet@google.com> 1458193935 -0700
committer David S. Miller <davem@davemloft.net> 1458263200 -0400

tcp/dccp: remove obsolete WARN_ON() in icmp handlers

Now SYN_RECV request sockets are installed in ehash table, an ICMP
handler can find a request socket while another cpu handles an incoming
packet transforming this SYN_RECV request socket into an ESTABLISHED
socket.

We need to remove the now obsolete WARN_ON(req->sk), since req->sk
is set when a new child is created and added into listener accept queue.

If this race happens, the ICMP will do nothing special.

Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Ben Lazarus <blazarus@google.com>
Reported-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>