lkml.org 
[lkml]   [2013]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: BUG: tick device NULL pointer during system initialization and shutdown
On Thu, 27 Jun 2013, Prarit Bhargava wrote:
> On 06/26/2013 07:05 AM, Thomas Gleixner wrote:
> > Subject: tick: Make oneshot broadcast robust vs. CPU offlining
> > From: Thomas Gleixner <tglx@linutronix.de>
> > Date: Wed, 26 Jun 2013 12:17:32 +0200
> >
> > In periodic mode we remove offline cpus from the broadcast propagation
> > mask. In oneshot mode we fail to do so. This was not a problem so far,
> > but the recent changes to the broadcast propagation introduced a
> > constellation which can result in a NULL pointer dereference.
> >
>
> Unfortunately this patch causes an NMI watchdog during system shutdown. Most of
> the CPUs are in start_secondary+0x254/0x256.

Huch. Did the warning in the broadcast code trigger before that?

Thanks,

tglx


\
 
 \ /
  Last update: 2013-06-28 13:21    [W:0.070 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site