linux-kernel - Re: [PATCH 5/5] net: Block MSG_CMSG_COMPAT in send(m)msg and recv(m)msg

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Date:	Thu, 6 Jun 2013 13:01:05 +1000
From:	Anton Blanchard <anton@...ba.org>
To:	Michael Neuling <mikey@...ling.org>
Cc:	Andy Lutomirski <luto@...capital.net>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	trinity@...r.kernel.org, netdev@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linux PPC dev <linuxppc-dev@...abs.org>,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH 5/5] net: Block MSG_CMSG_COMPAT in send(m)msg and
 recv(m)msg

Hi,

> This is causing a regression on 64bit powerpc with 32bit usermode.
> When I hit userspace, udev is broken and I suspect all networking is
> broken as well.
> 
> Can we please revert 1be374a0518a288147c6a7398792583200a67261
> upstream?
> 
> Found via bisect.

Doesn't this patch break compat_sys_sendmsg and compat_sys_recvmsg?
We'd need to move the guts of sys_* into compat_sys_* to fix it.

Anton
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