linux-kernel - Re: kernel BUG at lib/radix-tree.c:473!

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Message-ID: <48A46D98.1010607@goop.org>
Date:	Thu, 14 Aug 2008 10:38:32 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Hugh Dickins <hugh@...itas.com>
CC:	Ian Campbell <ijc@...lion.org.uk>, linux-kernel@...r.kernel.org,
	Kel Modderman <kel@...ku42.de>,
	Markus Armbruster <armbru@...hat.com>
Subject: Re: kernel BUG at lib/radix-tree.c:473!

Hugh Dickins wrote:
> In both cases it's handling a page fault: I'm curious as to what kind
> of vma this fault is occurring on.  Could you devise a way of getting
> us /proc/<pid>/maps output, together with the faulting address, when
> it hits one of these BUGs?  Or should I try to put together a patch
> for that?
>   

Irritatingly, it looks like the i386 register dump doesn't include cr2.  
My 64-bit dump has cr2 as 00007fb12cb2a000 which is a good solid 
usermode address.  I'll run X under strace to see if that gives a clue 
to what it corresponds to.

    J
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