From: Eric Dumazet <eric.duma...@gmail.com>
Date: Thu, 19 Oct 2017 15:24:49 -0700
> From: Eric Dumazet <eduma...@google.com>
>
> syzkaller found another bug in DCCP/TCP stacks [1]
>
> For the reasons explained in commit ce1050089c96 ("tcp/dccp: fix
> ireq->pktopts race"), we need to make sure we do not access
> ireq->opt unless we own the request sock.
...
> Fixes: e994b2f0fb92 ("tcp: do not lock listener to process SYN packets")
> Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
> ---
> v3: fixed the whit space mangling
> v2: removed some lines from KASAN report that confuse patchwork.
Much better, applied and queued up for -stable.
