From: Willem de Bruijn <willemdebruijn.ker...@gmail.com>
Date: Thu, 10 Aug 2017 12:41:58 -0400
> From: Willem de Bruijn <will...@google.com>
>
> Updates to tp_reserve can race with reads of the field in
> packet_set_ring. Avoid this by holding the socket lock during
> updates in setsockopt PACKET_RESERVE.
>
> This bug was discovered by syzkaller.
>
> Fixes: 8913336a7e8d ("packet: add PACKET_RESERVE sockopt")
> Reported-by: Andrey Konovalov <andreyk...@google.com>
> Signed-off-by: Willem de Bruijn <will...@google.com>
Also applied and queued up for -stable, thanks Willem.
