linux-kernel - Re: [PATCH/FIX] net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg

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Message-Id: <20130528.235628.1501314742626907861.davem@davemloft.net>
Date:	Tue, 28 May 2013 23:56:28 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	mingo@...nel.org
Cc:	luto@...capital.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	trinity@...r.kernel.org
Subject: Re: [PATCH/FIX] net: Block MSG_CMSG_COMPAT in send(m)msg and
 recv(m)msg

From: Ingo Molnar <mingo@...nel.org>
Date: Tue, 28 May 2013 10:56:00 +0200

> MSG_CMSG_COMPAT is (AFAIK) not intended to be part of the API --
> it's a hack that steals a bit to indicate to other networking code
> that a compat entry was used.  So don't allow it from a non-compat
> syscall.
> 
> This prevents an oops when running this code:
 ...
> Cc: David S. Miller <davem@...emloft.net>
> Signed-off-by: Andy Lutomirski <luto@...capital.net>

Applied and queued up for -stable.
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