Re: 2.6.21-rc7-mm1 on test.kernel.org

[Andrew Morton <akpm@linux-foundation.org>]

On Tue, 24 Apr 2007 16:59:29 -0700 Badari Pulavarty <pbadari@gmail.com> wrote:

> On Tue, 2007-04-24 at 13:06 -0700, Andrew Morton wrote:
> > An amd64 machine is crashing badly.
> > 
> > http://test.kernel.org/abat/84767/debug/console.log
> > 
> > VFS: Mounted root (ext3 filesystem) readonly.
> > Freeing unused kernel memory: 308k freed
> > INIT: version 2.86 booting
> > Bad page state in process 'init'
> > page:ffff81007e492628 flags:0x0100000000000000 mapping:0000000000000000 mapcount:0 count:1
> > Trying to fix it up, but a reboot is needed
> > Backtrace:
> > 
> > Call Trace:
> >  [<ffffffff80250d3c>] bad_page+0x74/0x10d
> >  [<ffffffff80253090>] free_hot_cold_page+0x8d/0x172
> ...
> > 
> > So free_pgd_range() is freeing a refcount=1 page.  Can anyone see what
> > might be causing this?  The quicklist code impacts this area more than
> > anything else..
> > 
> 
> Yep. quicklist patches are causing these.
> 
> making CONFIG_QUICKLIST=n didn't solve the problem. I had
> to back out all quicklist patches to make my machine boot.
> 

Great, thanks for working that out.  If people start reporting this I'll
drop 'em and do an -rc2, but things are awful quiet out there.

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