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Date: Wed, 31 Jul 2002 09:49:46 -0300 (BRT)
From: Rik van Riel <riel@conectiva.com.br>
X-X-Sender: riel@imladris.surriel.com
To: Petr Vandrovec <VANDROVE@vc.cvut.cz>
cc: akpm@zip.com.au, <linux-kernel@vger.kernel.org>
Subject: Re: BUG at rmap.c:212
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Message-ID: <Pine.LNX.4.44L.0207310948150.23404-100000@imladris.surriel.com>
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On Wed, 31 Jul 2002, Petr Vandrovec wrote:

>   yesterday I told (in IDE thread) that BUG at rmap.c:212 is probably
> already fixed by changeset 520. Unfortunately, it is not, I got it again
> with BK tree. It happened again when 'ntpd' called exit() upon receiving
> sigterm.

Line 212 is   'pte_chain_unlock(page);'   right ?

What configuration are you running ?  SMP ?  PREEMPT ?  What compiler ?

>   Stack trace:
>
>   page_remove_rmap
>   zap_pte_range
>   zap_pmd_range
>   unmap_page_range
>   exit_mmap
>   mmput
>   do_exit
>   sys_exit
>   syscall_call
>
> If it is not known bug, I'll rebuild kernel with DEBUG_RMAP.
> Unfortunately it looks like that machine must have uptime > 12hrs to
> trigger this. Probably updatedb or some other task must be run to try to
> swap ntpd out?

It is not a known bug. In fact I've never seen this one before.

kind regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

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