Re: [Bugme-new] [Bug 35762] New: Kernel panics on do_raw_spin_lock()

Re: [Bugme-new] [Bug 35762] New: Kernel panics on do_raw_spin_lock()

[Andrew Morton]

On Tue, 24 May 2011 20:06:01 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=35762
> 
>            Summary: Kernel panics on do_raw_spin_lock()
>            Product: Memory Management
>            Version: 2.5
>     Kernel Version: 2.6.38.6-26.rc1.fc14.x86_64
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: high
>           Priority: P1
>          Component: Other
>         AssignedTo: akpm@linux-foundation.org
>         ReportedBy: bryan.christ@gmail.com
>         Regression: No
> 
> 
> Kernel seems to frequently panic with RIP at do_raw_spin_lock().  I
> assume this might be vma related since the trace often implicates
> vma_merge() and friends.
> 
> Screenshots of panic:
> 
> http://www.mediafire.com/imageview.php?quickkey=hnd1dedna9bed65
> http://www.mediafire.com/imageview.php?quickkey=n86366d44i7mlx4
> http://www.mediafire.com/imageview.php?quickkey=0sgzfd91dvl3jhl
> http://www.mediafire.com/imageview.php?quickkey=zwly9x5c4zg28dn

hm, those photos aren't terribly useful.  They seem to be pointing at
the compaction code.

Maybe using the pause_on_oops kernel command line option
(Documentation/kernel-parameters.txt) will prevent the frist part of
the first oops from scrolling off the screen?

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Re: [Bugme-new] [Bug 35762] New: Kernel panics on do_raw_spin_lock()

[Mel Gorman]

On Wed, Jun 01, 2011 at 04:50:26PM -0700, Andrew Morton wrote:
> On Tue, 24 May 2011 20:06:01 GMT
> bugzilla-daemon@bugzilla.kernel.org wrote:
> 
> > https://bugzilla.kernel.org/show_bug.cgi?id=35762
> > 
> >            Summary: Kernel panics on do_raw_spin_lock()
> >            Product: Memory Management
> >            Version: 2.5
> >     Kernel Version: 2.6.38.6-26.rc1.fc14.x86_64
> >           Platform: All
> >         OS/Version: Linux
> >               Tree: Mainline
> >             Status: NEW
> >           Severity: high
> >           Priority: P1
> >          Component: Other
> >         AssignedTo: akpm@linux-foundation.org
> >         ReportedBy: bryan.christ@gmail.com
> >         Regression: No
> > 
> > 
> > Kernel seems to frequently panic with RIP at do_raw_spin_lock().  I
> > assume this might be vma related since the trace often implicates
> > vma_merge() and friends.
> > 
> > Screenshots of panic:
> > 
> > http://www.mediafire.com/imageview.php?quickkey=hnd1dedna9bed65
> > http://www.mediafire.com/imageview.php?quickkey=n86366d44i7mlx4
> > http://www.mediafire.com/imageview.php?quickkey=0sgzfd91dvl3jhl
> > http://www.mediafire.com/imageview.php?quickkey=zwly9x5c4zg28dn
> 
> hm, those photos aren't terribly useful.  They seem to be pointing at
> the compaction code.
> 

It's possible but I'm agreed that the photos aren't terribly useful. It
would be preferable to see the first oops where as this appears to be a
second or third oops.

Also, I note this is a Fedora kernel. Is the bug readily reproducible? 
If so, would you be willing to verify the problem happens with 2.6.38.7?
What are the reproduction steps?

-- 
Mel Gorman
SUSE Labs

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