Re: 2.6.21-rc7-mm2 crash: Eeek! page_mapcount(page) went negative! (-1)

Andrew Morton
2007-05-02T20:08:10Z

On Wed, 02 May 2007 19:36:03 +0200
Tilman Schmidt <tilman@imap.cc> wrote:

> Am 02.05.2007 09:52 schrieb Greg KH:
> > Tilman, here's a patch, can you try this on top of your tree that dies?
>
> 2.6.21-git3 plus that patch comes up fine.
>
> (Except for a UDP problem I seem to remember I already saw reported
> on lkml and which I'll ignore for now in order not to blur the
> picture.)

Thanks.

> Started to git-bisect mainline now, but that will take some time.
> It's more than 800 patches to check and I don't get more than 2-3
> iterations per day out of that machine.

I don't think there's much point in you doing that. We know what the bug is.

Switching to 8k stacks will probably fix things up too.