linux-kernel - Re: [PATCH v8 3/8] seccomp: add system call filtering using BPF

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Message-ID: <4F3D61CB.2000301@zytor.com>
Date:	Thu, 16 Feb 2012 12:06:35 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Will Drewry <wad@...omium.org>
CC:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-doc@...r.kernel.org, kernel-hardening@...ts.openwall.org,
	netdev@...r.kernel.org, x86@...nel.org, arnd@...db.de,
	davem@...emloft.net, mingo@...hat.com, oleg@...hat.com,
	peterz@...radead.org, rdunlap@...otime.net, mcgrathr@...omium.org,
	tglx@...utronix.de, luto@....edu, eparis@...hat.com,
	serge.hallyn@...onical.com, djm@...drot.org, scarybeasts@...il.com,
	indan@....nu, pmoore@...hat.com, akpm@...ux-foundation.org,
	corbet@....net, eric.dumazet@...il.com, markus@...omium.org,
	keescook@...omium.org
Subject: Re: [PATCH v8 3/8] seccomp: add system call filtering using BPF

On 02/16/2012 12:02 PM, Will Drewry wrote:
> +
> +/* Format of the data the BPF program executes over. */
> +struct seccomp_data {
> +	int nr;
> +	__u32 __reserved[3];
> +	struct {
> +		__u32	lo;
> +		__u32	hi;
> +	} instruction_pointer;
> +	__u32 lo32[6];
> +	__u32 hi32[6];
> +};
>  

This seems more than a bit odd, no?

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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