linux-kernel - Re: nouveau, linux3.7-rc3: BUG: unable to handle kernel paging request at fffffffffffffff8

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Message-Id: <20121105092904.74d7ff6703f984b0b05f8e16@studenti.unina.it>
Date:	Mon, 5 Nov 2012 09:29:04 +0100
From:	Antonio Ospite <ospite@...denti.unina.it>
To:	dri-devel@...ts.freedesktop.org
Cc:	David Airlie <airlied@...ux.ie>, Ben Skeggs <bskeggs@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: nouveau, linux3.7-rc3: BUG: unable to handle kernel paging
 request at fffffffffffffff8

On Mon, 29 Oct 2012 23:16:24 +0100
Antonio Ospite <ospite@...denti.unina.it> wrote:

> Hi,
> 
> I am experiencing a bug with nouveau with linux-3.7-rc3 (and since rc1),
> my video adapter is the one integrated on the MSI M3N78-VM motherboard
> (hence x86_64):
> 
[...]
> [ 1943.858601] BUG: unable to handle kernel paging request at fffffffffffffff8
> [ 1943.858669] IP: [<ffffffffa031a67a>] nouveau_mm_head+0x30/0x127 [nouveau]
> [ 1943.858779] PGD 160d067 PUD 160e067 PMD 0 
> [ 1943.858803] Oops: 0000 [#1] SMP 
[..]
> [ 1943.860018] Call Trace:
> [ 1943.860019]  [<ffffffff810fa13d>] ? kmem_cache_alloc_trace+0xbf/0xcf
> [ 1943.860019]  [<ffffffff81060f13>] ? should_resched+0x5/0x23
> [ 1943.860019]  [<ffffffffa032a10a>] ? nv50_fb_vram_new+0xc5/0x1f2 [nouveau]

Ben, I cannot reproduce the crash with 3.7-rc4, I spotted commits
a7dbf00 and 5cad16a which seem to be related to the problem I was
having; would you mind elaborating a bit about what you think was
causing the crash on my side? Maybe the chipset used on this motherboard
doesn't support some feature? And how did you figured out from the logs?

Thanks,
   Antonio

-- 
Antonio Ospite
http://ao2.it

A: Because it messes up the order in which people normally read text.
   See http://en.wikipedia.org/wiki/Posting_style
Q: Why is top-posting such a bad thing?
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