linux-kernel - Re: [git pull] RCU updates for v2.6.27

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Message-ID: <20080715230646.GB31249@elte.hu>
Date:	Wed, 16 Jul 2008 01:06:46 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, paulmck@...ibm.com,
	a.p.zijlstra@...llo.nl, Vegard Nossum <vegard.nossum@...il.com>
Subject: Re: [git pull] RCU updates for v2.6.27


* Pekka Enberg <penberg@...helsinki.fi> wrote:

> There are now three commits in your tree that fix a real bug reported 
> by kmemcheck: 8410565f540db87ca938f56f92780d251e4f157d ("ACPICA: Fix 
> for access to deleted object <regression>"), 
> adeed48090fc370afa0db8d007748ee72a40b578 ("rc80211_pid: Fix fast_start 
> parameter handling"), and 62f75532b583c03840f31e40386ce2df73be9ca0 
> ("slub: Initialize per-cpu stats").

there's a fourth one that i found via kmemcheck and which got fixed by 
Jens but the commit log doesnt mention that it was found via kmemcheck:

 | commit 63a7138671c50a6f2c27bbd1a308dc75967062a3
 | Author: Jens Axboe <jens.axboe@...cle.com>
 | Date:   Fri Feb 8 12:41:03 2008 +0100
 |
 |     block: fixup rq_init() a bit

> So I think it has been helpful and that the infrastructure it adds is 
> valuable for future debugging aids.

even if it was not finding any bugs it would be useful to us - it has 
already cleaned up a few dusty aspects of x86 code. (it might be similar 
for SLUB)

Oh, and kmemcheck got Vegard to hack Linux ;-)

	Ingo
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