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Re: kernel bug using 2.6.23-rc9

To: Giuseppe Sacco <giuseppe@eppesuigoccas.homedns.org>
Subject: Re: kernel bug using 2.6.23-rc9
From: Ralf Baechle <ralf@linux-mips.org>
Date: Fri, 5 Oct 2007 13:25:43 +0100
Cc: linux-mips@linux-mips.org
In-reply-to: <1191502153.10050.15.camel@scarafaggio>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <1191502153.10050.15.camel@scarafaggio>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.14 (2007-02-12)
On Thu, Oct 04, 2007 at 02:49:13PM +0200, Giuseppe Sacco wrote:

> Hi, while testing the latest kernel on SGI O2 I got may kernel bugs like
> this:
> 
> Kernel bug detected[#9]:
> Cpu 0
> $ 0   : 0000000000000000 ffffffff9001fce0 0000000000000001 0000000000000f18
> $ 4   : 980000000111b4b8 000000007f955f18 ffffffff80400000 0000000000003fff
> $ 8   : 00000000000050f1 000000007f955f18 9800000006073d68 9800000006073d60
> $12   : 0000000000000010 ffffffff80000008 ffffffff80091680 0000000000000000
> $16   : 980000000111b4b8 980000000768ddd0 000000000000000e 000000007f955f18
> $20   : 9800000000581908 9800000007898080 9800000006073d68 9800000006073d60
> $24   : 0000000000478284 000000002ac30580                                  
> $28   : 9800000006070000 9800000006073cd0 0000000000000000 ffffffff8001b390
> Hi    : 000000000000f2d3
> Lo    : 00000000000050f1
> epc   : ffffffff8001c800 kmap_coherent+0x10/0x118     Tainted: G      D
> ra    : ffffffff8001b390 __flush_anon_page+0x70/0x90

Very interesting.  Can you describe me your setup or maybe even come up
with a test case for this?

  Ralf

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