linux-kernel - Re: [Bug #16537] TREE

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Message-Id: <201009212107.54606.rjw@sisk.pl>
Date:	Tue, 21 Sep 2010 21:07:54 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Rolf Eike Beer <eike-kernel@...tec.de>
Subject: Re: [Bug #16537] TREE_RCU hangs at boot

On Tuesday, September 21, 2010, Paul E. McKenney wrote:
> On Mon, Sep 20, 2010 at 11:26:27AM -0700, Paul E. McKenney wrote:
> > On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of regressions introduced between 2.6.34 and 2.6.35.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > > be listed and let the tracking team know (either way).
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > > Subject		: TREE_RCU hangs at boot
> > > Submitter	: Rolf Eike Beer <eike-kernel@...tec.de>
> > > Date		: 2010-08-07 12:18 (37 days old)
> > > Handled-By	: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> > 
> > I cannot reproduce this.  The function that is claimed to hang contains
> > only printk()s.  I have asked the guys who can actually reproduce it
> > to try a later kernel, and will let you know how this goes.
> > 
> > If you cannot trust printk(), who can you trust?  ;-)
> 
> It turns out that this problem is due to tab processing in the PA-RISC
> firmware, which certainly explains my inability to reproduce it.  It
> turns out that it is fixed by:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d9b68e5e88248bb24fd4e455588bea1d56108fd6
> 
> So we can close this regression.
> 
> Many thanks to Guy Martin <gmsoft@...icoman.be> for much help with
> this!!!

Thanks, closed.

Rafael
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