netdev - Re: [1/3] 2.6.21-rc6: known regressions

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Message-ID: <20070420133952.GA17749@elte.hu>
Date:	Fri, 20 Apr 2007 15:39:52 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jgarzik@...ox.com>, netdev@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net,
	Ayaz Abdulla <aabdulla@...dia.com>,
	Dave Jones <davej@...hat.com>,
	"David S. Miller" <davem@...emloft.net>, Greg KH <greg@...ah.com>
Subject: Re: [1/3] 2.6.21-rc6: known regressions


* Ingo Molnar <mingo@...e.hu> wrote:

> > The 6b6b6b6b pattern is POISON_FREE, implying some kind of slab 
> > misuse, most likely a use-after-free, although possibly just due to 
> > overrunning a slab into the next one or something like that.
> 
> unfortunately, while being at -rc6 based kernel #445 meanwhile, this 
> incident was the only time i saw this problem. [...]

meanwhile i'm at kernel bootup #657, and still this crash did not 
reoccur. So it could have been some pre-existing sysfs bug that triggers 
only extremely rarely. I'd suggest that this bug have its priority 
lowered (to not hold up a v2.6.21 release) - there's no smoking gun and 
no reproducer. I'll keep an eye on it.

	Ingo
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