netdev - Re: 2.6.30-rc2-git2: Reported regressions from 2.6.29

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Message-ID: <20090417012544.GB16126@elte.hu>
Date:	Fri, 17 Apr 2009 03:25:44 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Natalie Protasevich <protasnb@...il.com>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Network Development <netdev@...r.kernel.org>,
	Linux ACPI <linux-acpi@...r.kernel.org>,
	Linux PM List <linux-pm@...ts.linux-foundation.org>,
	Linux SCSI List <linux-scsi@...r.kernel.org>
Subject: Re: 2.6.30-rc2-git2: Reported regressions from 2.6.29


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> 
> 
> I think you put this in the wrong regression pile:
> 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=13112
> > Subject		: Oops in drain_array
> > Submitter	: Bart <mmx@....pl>
> > Date		: 2009-04-14 10:21 (3 days old)
> > References	: http://marc.info/?l=linux-kernel&m=123970493224628&w=4
> 
> Hmm. This one seems like it should be in the "since 2.6.28" camp, since if 
> I read that one right, it happens with 2.6.29.1.
> 
> (I mean sure, it might be new since 2.6.29, but it sounds more likely that 
> it's already in 2.6.29)

I'd suspect it's possibly hardware related:

  http://www.kerneloops.org/search.php?search=free_block&btnG=Function+Search

Look at the very similar call signatures - spanning almost all 
kernels back to v2.6.16. There's one spike at .27 - perhaps the same 
box trying up hard and crashing several times - or a popular distro 
kernel?

Or it's a really ancient bug going back to v2.6.16.

	Ingo
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