Date: Fri, 10 Sep 2004 00:49:35 -0700
From: Andrew Morton <akpm@osdl.org>
To: Peter Williams <pwil3058@bigpond.net.au>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [2.6.9-rc1-bk14 Oops] In groups_search()
Message-Id: <20040910004935.15ee7b10.akpm@osdl.org>
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Peter Williams <pwil3058@bigpond.net.au> wrote:
>
>  > It would be useful if you could experiment with CONFIG_DEBUG_SLAB and
>  > CONFIG_DEBUG_PAGEALLOC.
> 
>  With both of those enabled and all four patches applied the oops and the 
>  scheduling while atomic have stopped BUT I'm now getting 4  identical 
>  oops in kfree which seem to be associated with a segment fault in mount 
>  while my start up script is mounting some iso files with loopback.

gack.  One bug at a time, OK?

Please drop those four patches - that idea didn't work out.

So we know that enabling CONFIG_DEBUG_SLAB and/or CONFIG_DEBUG_PAGEALLOC
makes the in_group_p() crash go away, yes?

Running out of ideas here.  If you could, please try enabling those debug
options separately, see if that tells us something.

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