From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] packet: compat support for sock_fprog Date: Thu, 09 Jun 2016 23:41:19 -0700 (PDT) Message-ID: <20160609.234119.2132907033141598314.davem@davemloft.net> References: <1465315594-84301-1-git-send-email-willemdebruijn.kernel@gmail.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, daniel@iogearbox.net, deller@gmx.de, willemb@google.com To: willemdebruijn.kernel@gmail.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:54140 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752898AbcFJGlU (ORCPT ); Fri, 10 Jun 2016 02:41:20 -0400 In-Reply-To: <1465315594-84301-1-git-send-email-willemdebruijn.kernel@gmail.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Willem de Bruijn Date: Tue, 7 Jun 2016 12:06:34 -0400 > From: Willem de Bruijn > > Socket option PACKET_FANOUT_DATA takes a struct sock_fprog as argument > if PACKET_FANOUT has mode PACKET_FANOUT_CBPF. This structure contains > a pointer into user memory. If userland is 32-bit and kernel is 64-bit > the two disagree about the layout of struct sock_fprog. > > Add compat setsockopt support to convert a 32-bit compat_sock_fprog to > a 64-bit sock_fprog. This is analogous to compat_sock_fprog support for > SO_REUSEPORT added in commit 1957598840f4 ("soreuseport: add compat > case for setsockopt SO_ATTACH_REUSEPORT_CBPF"). > > Reported-by: Daniel Borkmann > Signed-off-by: Willem de Bruijn Applied.