linux-kernel - Re: seccomp and ptrace. what is the correct order?

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Message-ID: <4FBC0733.8030106@zytor.com>
Date:	Tue, 22 May 2012 14:37:55 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Will Drewry <wad@...omium.org>
CC:	Al Viro <viro@...iv.linux.org.uk>, Indan Zupancic <indan@....nu>,
	Roland McGrath <mcgrathr@...gle.com>,
	Eric Paris <netdev@...isplace.org>,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org,
	kernel-hardening@...ts.openwall.com, mingo@...hat.com,
	oleg@...hat.com, peterz@...radead.org, rdunlap@...otime.net,
	tglx@...utronix.de, luto@....edu, eparis@...hat.com,
	serge.hallyn@...onical.com, pmoore@...hat.com,
	akpm@...ux-foundation.org, corbet@....net, eric.dumazet@...il.com,
	markus@...omium.org, coreyb@...ux.vnet.ibm.com,
	keescook@...omium.org
Subject: Re: seccomp and ptrace. what is the correct order?

On 05/22/2012 02:14 PM, Will Drewry wrote:
>>
>> I suspect the construction of those inlines can be improved.
> 
> Seems likely - or just my use of them :)
> 

One thing that could make the code worse is if you are in a flow where
the state of the TS_COMPAT flag is known but gcc doesn't know that.  I
don't have an easy answer for that.

	-hpa

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