linux-kernel - Re: [-rc7 regression] Buggy commit: "mm: use aligned zone start for pfn_to

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Message-ID: <20130216082512.GA18851@gmail.com>
Date:	Sat, 16 Feb 2013 09:25:12 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	Yinghai Lu <yinghai@...nel.org>, Greg KH <gregkh@...e.de>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>,
	Alexander Viro <viro@....linux.org.uk>,
	Theodore Ts'o <tytso@....edu>,
	"H. Peter Anvin" <hpa@...or.com>,
	Laura Abbott <lauraa@...eaurora.org>,
	Mel Gorman <mgorman@...e.de>
Subject: Re: [-rc7 regression] Buggy commit: "mm: use aligned zone start for
 pfn_to_bitidx calculation"


* Ingo Molnar <mingo@...nel.org> wrote:

> Revert attached below - it reverts cleanly and I'll test this 
> today, to see whether this solves the sporadic lockups.

Ok, the revert survived a day of hundreds of randconfigs - while 
it would lock up within 100 randconfigs before.

So this commit appears to be the root cause of the regression.

Thanks,

	Ingo
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