linux-kernel - Re: [Bugme-new] [Bug 10586] New: High Number of Segfaults onMacBookStarting With 2.6.24.5 Kernel

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Date:	Thu, 1 May 2008 18:42:12 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ryan Roth <ryanroth@...global.net>
Cc:	bugme-daemon@...zilla.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 10586] New: High Number of Segfaults
 onMacBookStarting With 2.6.24.5 Kernel

On Thu, 01 May 2008 17:57:51 -0700 Ryan Roth <ryanroth@...global.net> wrote:

> Andrew Morton wrote:
> > On Thu, 01 May 2008 17:04:36 -0700
> > Ryan Roth <ryanroth@...global.net> wrote:
> >
> >   
> >> Since this last boot I have only got these:
> >>
> >>     
> >>> May 1 16:26:25 kernel: gnome-power-man[3112]: segfault at 0 ip 410fda 
> >>> sp 7fff4712c870 error 4 in gnome-power-manager[400000+47000]
> >>> May 1 16:26:25 kernel: gnome-power-man[3116]: segfault at 0 ip 410fda 
> >>> sp 7fff2959cce0 error 4 in gnome-power-manager[400000+47000]
> >>> May 1 16:26:25 kernel: gnome-power-man[3119]: segfault at 0 ip 410fda 
> >>> sp 7fffc7671db0 error 4 in gnome-power-manager[400000+47000]
> >>>       
> >
> > OK.
> >
> > Well I don't know what the heck to do about that.  It could be that we've
> > gone and changed the contents of (say) an acpi /proc file, and this happens
> > to cause your particular version of gnome-power-manager to take a different
> > (and buggy) codepath, so it crashes.  Or something like this.
> >
> > I hate to do this to you, but our best hope for getting to the bottom of
> > this is for you to run a git bisection search to find out what we did which
> > triggered this.  http://www.kernel.org/doc/local/git-quick.html has some
> > instructions.
> >
> > Or you could go the other route and work out where and why
> > gnome-power-manager is crashing.
> >
> > You could try upgrading (or downgrading) your gnome-power-manager version,
> > see if that affects things.
> >
> > Does the problem affect only gnome-power-manager?
> >
> >   
> 
> OK it looks like I was possibly (probably) barking up the wrong tree.  I 
> was able to get gnome-phone-manager to give me some useful information 
> and it turns out that gnome-power-management crashes if 
> gnome-phone-manager is running first (which I had set to autorun) 

heh, thanks, I wish they were all that simple.

It'd be useful to go back to 2.6.24 and check that the same effects are
seen there with the same userspace setup.

> something to due with bluetooth errors.

Well..  bluetooth isn't exactly our shining example of kernel technology
I'm afraid.  If you do suspect there are kernel problems in there please be
sure to cc linux-bluetooth@...r.kernel.org on the email.



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