linux-kernel - Re: clockevents_program_event WARN

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Message-ID: <20130503201037.GA17652@redhat.com>
Date:	Fri, 3 May 2013 16:10:37 -0400
From:	Dave Jones <davej@...hat.com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: clockevents_program_event WARN_ON preventing boot.

On Fri, May 03, 2013 at 08:32:58PM +0200, Thomas Gleixner wrote:
 > On Fri, 3 May 2013, Dave Jones wrote:
 > > On Fri, May 03, 2013 at 12:49:20AM +0200, Thomas Gleixner wrote:
 > > 
 > >  > I'm fundamentally confused and Daves observation about slub debug does
 > >  > not make it less confusing.
 > >  > 
 > >  > It'd be nice if you could add some more instrumentation or bisect the
 > >  > issue.
 > > 
 > > Here's what I ended up with..
 > > b352bc1cbc29134a356b5c16ee2281807a7b984e is the first bad commit
 > > commit b352bc1cbc29134a356b5c16ee2281807a7b984e
 > > Author: Thomas Gleixner <tglx@...utronix.de>
 > > Date:   Tue Mar 5 14:25:32 2013 +0100
 > > 
 > >     tick: Convert broadcast cpu bitmaps to cpumask_var_t
 > >     
 > >     Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
 > >     Link: http://lkml.kernel.org/r/20130306111537.366394000@linutronix.de
 > >     Cc: Rusty Russell <rusty@...tcorp.com.au>
 > > 
 > 
 > I bet you have CONFIG_CPUMASK_OFFSTACK enabled.
 > 
 > /me is a moron and rumages for a brown paperbag.
 > 
 > Patch below.

Works for me.

Tested-by: Dave Jones <davej@...hat.com>

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