linux-kernel - Re: 3.1-rc1-git9: Reported regressions 2.6.39 -> 3.0

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Message-Id: <201108151943.58179.rjw@sisk.pl>
Date:	Mon, 15 Aug 2011 19:43:57 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Florian Mickler <florian@...kler.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	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>,
	Linux Wireless List <linux-wireless@...r.kernel.org>,
	DRI <dri-devel@...ts.freedesktop.org>
Subject: Re: 3.1-rc1-git9: Reported regressions 2.6.39 -> 3.0

On Monday, August 15, 2011, Paul E. McKenney wrote:
> On Sun, Aug 14, 2011 at 09:02:27PM +0200, Rafael J. Wysocki wrote:
> > [NOTE:
> >  We already have a bug entry for tracking regressions from 3.0:
> > 
> >  http://bugzilla.kernel.org/show_bug.cgi?id=40982
> > 
> >  but there are no reports linked to it, mostly because Maciej is on vacation,
> >  but also because the frequency of reporting regressions has been low
> >  recently.  So, if you're seeing a regression from 3.0, please let us know.]
> > 
> > This message contains a list of some post-2.6.39 regressions introduced before
> > 3.0, for which there are no fixes in the mainline known to the tracking team.
> > If any of them have been fixed already, please let us know.
> > 
> > If you know of any other unresolved post-2.6.39 regressions, please let us know
> > either and we'll add them to the list.  Also, please let us know if any
> > of the entries below are invalid.
> > 
> > Each entry from the list will be sent additionally in an automatic reply to
> > this message with CCs to the people involved in reporting and handling the
> > issue.
> > 
> > 
> > Listed regressions statistics:
> > 
> >   Date          Total  Pending  Unresolved
> >   ----------------------------------------
> >   2011-08-14       63       22          19
> > 
> > 
> > Unresolved regressions
> > ----------------------
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=40282
> > Subject		: IP forwarding regression since 3.0-rc6
> > Submitter	: Stephan Seitz <stse+lkml@...ng.rootsland.net>
> > Date		: 2011-07-25 12:51 (21 days old)
> > Message-ID	: <20110725T141145.GA.2ae38.stse@...ng.rootsland.net>
> > References	: http://marc.info/?l=linux-kernel&m=131159880004908&w=2
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=40172
> > Subject		: lockdep trace from post 3.0.
> > Submitter	: Dave Jones <davej@...hat.com>
> > Date		: 2011-07-24 1:32 (22 days old)
> > Message-ID	: <20110724013257.GA6777@...hat.com>
> > References	: http://marc.info/?l=linux-kernel&m=131147120206819&w=2
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=40092
> > Subject		: RCU stall in linux-3.0.0
> > Submitter	: Philip Armstrong <phil@...taka.co.uk>
> > Date		: 2011-07-25 21:44 (21 days old)
> 
> This one was due the the CPU's idea of the current time getting way
> out of sync (as in more than a minute's worth of disagreement, which is
> pretty impressive when you think about it).  So what happened is that
> one CPU decided that the current grace period was a full minute old
> immediately, and thus started screaming piteously.  John Stultz provided
> a configuration workaround, and he and Thomas Gleixner would be working
> out the long-term fix.

Thanks for the update!

Rafael
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