linux-kernel - Re: [libseccomp-discuss] ARM audit, seccomp, etc are broken wrt OABI syscalls

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Message-ID: <20131106155104.GZ16735@n2100.arm.linux.org.uk>
Date:	Wed, 6 Nov 2013 15:51:04 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Eric Paris <eparis@...hat.com>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Kees Cook <keescook@...omium.org>,
	Will Drewry <wad@...omium.org>,
	Richard Weinberger <richard@....at>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	libseccomp-discuss@...ts.sourceforge.net,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [libseccomp-discuss] ARM audit, seccomp, etc are broken wrt
	OABI syscalls

On Wed, Nov 06, 2013 at 10:32:31AM -0500, Eric Paris wrote:
> On Tue, 2013-11-05 at 14:36 -0800, Andy Lutomirski wrote:
> > 1. Set a different audit arch for OABI syscalls (e.g.
> > AUDIT_ARCH_ARMOABI).  That is, treat OABI syscall entries the same way
> > that x86_64 treats int 80.
> 
> As the audit maintainer, I like #1.  It might break ABI, but the ABI is
> flat wrong now and not maintainable...

If you read the whole thread, you will see that this corner case is just
not worth the effort to support.  Audit may as well be disabled by
kernel config if any OABI support is enabled.
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