Bug 11407

Summary: suspend: unable to handle kernel paging request
Product: Power Management Reporter: Rafael J. Wysocki (rjw)
Component: Hibernation/SuspendAssignee: power-management_other
Status: CLOSED UNREPRODUCIBLE    
Severity: normal CC: pavel, vegard.nossum
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.27-rc4-00003-ga798564 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 7216, 11167    

Description Rafael J. Wysocki 2008-08-22 15:06:18 UTC 
Subject    : latest -git: suspend: unable to handle kernel paging request
Submitter  : "Vegard Nossum" <vegard.nossum@gmail.com>
Date       : 2008-08-21 17:28
References : http://marc.info/?l=linux-kernel&m=121933974928881&w=4
Handled-By : "Rafael J. Wysocki" <rjw@sisk.pl>
Handled-By : "Pekka Enberg" <penberg@cs.helsinki.fi>
Handled-By : Pavel Machek <pavel@suse.cz>

This entry is being used for tracking a regression from 2.6.26.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Rafael J. Wysocki 2008-09-12 15:24:24 UTC 
On Friday, 12 of September 2008, Vegard Nossum wrote:
> On Fri, Sep 12, 2008 at 9:06 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.26.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=11407
> > Subject         : suspend: unable to handle kernel paging request
> > Submitter       : Vegard Nossum <vegard.nossum@gmail.com>
> > Date            : 2008-08-21 17:28 (23 days old)
> > References      : http://marc.info/?l=linux-kernel&m=121933974928881&w=4
> > Handled-By      : Rafael J. Wysocki <rjw@sisk.pl>
> >                  Pekka Enberg <penberg@cs.helsinki.fi>
> >                  Pavel Machek <pavel@suse.cz>
> 
> I'm sorry for not replying sooner. This is current status: Problem was
> never resolved. I tried to bisect, but I only ran into other problems
> with either config not being supported for my machine prior to certain
> date while trying to find a good bisection point. It's been a while
> now, so I don't remember everything exactly, but I may try to
> reproduce it tomorrow on the latest -git and see what comes up.
> 
> Will report back as soon as I have more info. Thanks,
Comment 2 Chuck Ebbert 2008-09-12 15:46:38 UTC 
The first reported oops is here:

static inline int lock_and_freeze_slab(struct kmem_cache_node *n,
                                                        struct page *page)
{
        if (slab_trylock(page)) {
=====>          list_del(&page->lru);
                n->nr_partial--;
                __SetPageSlubFrozen(page);
                return 1;
        }
        return 0;
}

I'm guessing the page isn't on an lru list, or the list is corrupted.
Comment 3 Chuck Ebbert 2008-09-12 15:51:54 UTC 
Second reported oops could be one of several list_add() operations; they all operate on &page->lru.
Comment 4 Rafael J. Wysocki 2008-11-16 10:09:51 UTC 
This problem seems not to be reproducible any more.  Closing.