From: Eric Dumazet <eric.duma...@gmail.com>
Date: Sun, 05 Mar 2017 10:52:16 -0800
> From: Eric Dumazet <eduma...@google.com>
>
> Dmitry reported crashes in DCCP stack [1]
>
> Problem here is that when I got rid of listener spinlock, I missed the
> fact that DCCP stores a complex state in struct dccp_request_sock,
> while TCP does not.
>
> Since multiple cpus could access it at the same time, we need to add
> protection.
...
> Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> Reported-by: Dmitry Vyukov <dvyu...@google.com>
> Tested-by: Dmitry Vyukov <dvyu...@google.com>
Applied and queued up for -stable.
