linux-kernel - Re: [PATCH v14 01/13] sk_run_filter: add BPF_S_ANC_SECCOMP_LD

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Message-ID: <1331712357.2456.58.camel@edumazet-laptop>
Date:	Wed, 14 Mar 2012 01:05:57 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Indan Zupancic <indan@....nu>
Cc:	Will Drewry <wad@...omium.org>, linux-kernel@...r.kernel.org,
	linux-arch@...r.kernel.org, linux-doc@...r.kernel.org,
	kernel-hardening@...ts.openwall.com, netdev@...r.kernel.org,
	x86@...nel.org, arnd@...db.de, davem@...emloft.net, hpa@...or.com,
	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, pmoore@...hat.com,
	akpm@...ux-foundation.org, corbet@....net, markus@...omium.org,
	coreyb@...ux.vnet.ibm.com, keescook@...omium.org
Subject: Re: [PATCH v14 01/13] sk_run_filter: add BPF_S_ANC_SECCOMP_LD_W

Le mercredi 14 mars 2012 à 08:59 +0100, Indan Zupancic a écrit :

> The only remaining question is, is it worth the extra code to release
> up to 32kB of unused memory? It seems a waste to not free it, but if
> people think it's not worth it then let's just leave it around.

Quite frankly its not an issue, given JIT BPF is not yet default
enabled.

I am not sure all bugs were found and fixed. I would warn users before
considering using it in production.

If you have time, I would appreciate if you could double check and find
last bugs in it.



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