From: Matt Mackall <mpm@selenic.com>
To: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-mm@kvack.org, penberg@cs.helsinki.fi,
akpm@linux-foundation.org
Subject: Re: 2.6.28-rc1: EIP: slab_destroy+0x84/0x142
Date: Fri, 24 Oct 2008 19:30:30 -0500 [thread overview]
Message-ID: <1224894630.3248.77.camel@calx> (raw)
In-Reply-To: <20081025002406.GA20024@x200.localdomain>
On Sat, 2008-10-25 at 04:24 +0400, Alexey Dobriyan wrote:
> On Fri, Oct 24, 2008 at 06:29:47PM -0500, Christoph Lameter wrote:
> > On Sat, 25 Oct 2008, Alexey Dobriyan wrote:
> >
> >> Fault occured at slab_destroy in KVM guest kernel.
> >
> > Please switch on all SLAB debug options and rerun.
>
> They're already on!
>
> New knowledge: turning off just DEBUG_PAGEALLOC makes oops dissapear,
> other debugging options don't matter.
It's quite possible there's a bad interaction with DEBUG_PAGEALLOC and
the slab redzone logic. The first makes allocations full pages so that
we can later unmap them and detect spurious writes to them while the
second puts a redzone in front of the page (ie potentially in lala
land).
--
Mathematics is the supreme nostalgia of our time.
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next prev parent reply other threads:[~2008-10-25 0:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <alpine.LFD.2.00.0810232028500.3287@nehalem.linux-foundation.org>
2008-10-24 18:59 ` Alexey Dobriyan
2008-10-24 21:38 ` Matt Mackall
2008-10-24 22:09 ` Alexey Dobriyan
2008-10-24 23:29 ` Christoph Lameter
2008-10-25 0:24 ` Alexey Dobriyan
2008-10-25 0:30 ` Matt Mackall [this message]
2008-10-25 2:54 ` Alexey Dobriyan
2008-10-25 3:00 ` Matt Mackall
2008-10-25 3:20 ` Alexey Dobriyan
2008-10-26 12:30 ` Avi Kivity
2008-10-26 21:27 ` Alexey Dobriyan
2008-10-27 14:23 ` Alexey Dobriyan
2008-10-27 14:24 ` Avi Kivity
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