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Date: Thu, 10 Jan 2002 11:05:47 -0600
From: Bob Glamm <glamm@mail.ece.umn.edu>
To: linux-kernel@vger.kernel.org
Subject: Re: 2.4.18pre2 oops using agpgart
Message-ID: <20020110110547.A4633@kittpeak.ece.umn.edu>
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In-Reply-To: <Pine.LNX.4.33.0201101742380.219-100000@gandalf.rhpk.springfield.inwind.it>; from c.paris@libero.it on Thu, Jan 10, 2002 at 05:44:17PM +0100
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On Thu, Jan 10, 2002 at 05:44:17PM +0100, Cristiano Paris wrote:
> It finally turned out that using the agpgart module with my notebook makes
> my machine crash and reset. Here's the last oops :

Hehehe you think this error is specific to agpgart?  I've seen very
similar traces from SMP.  Even sent these specific tracebacks here,
offered to help track down the problem, got 0 help.  This problem
has been around since at least 2.4.2.

Good luck.

-Bob


> Unable to handle kernel NULL pointer dereference at virtual address 00000004
> c012f857
> *pde = 00000000
> Oops: 0002
> CPU:    0
> EIP:    0010:[<c012f857>]    Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010212
> eax: 00000000   ebx: ca5e3a80   ecx: 00000000   edx: c0254f34
> esi: 00000000   edi: ffffffe9   ebp: c14062e0   esp: c9a6bf54
> ds: 0018   es: 0018   ss: 0018
> Process fetchmail (pid: 3134, stackpage=c9a6b000)
> Stack: bfffeebc ffffffe9 c012e73a bfffeebc cc8c8000 00000000 bfffeeac c012e71a
>        cf6902e0 c14062e0 00000000 00000003 cc8c8000 bffff624 cf6902e0 c14062e0
>        bffff624 bfffeeac 00000000 00000001 00000001 c012ea4a cc8c8000 00000000
> Call Trace: [<c012e73a>] [<c012e71a>] [<c012ea4a>] [<c0106b0b>]
> Code: 89 50 04 89 02 ff 0d 24 4f 25 c0 31 c0 b9 1a 00 00 00 89 df
> Error (Oops_bfd_perror): set_section_contents Bad value
> 
> >>EIP; c012f856 <get_empty_filp+16/108>   <=====
> Trace; c012e73a <dentry_open+16/188>
> Trace; c012e71a <filp_open+52/5c>
> Trace; c012ea4a <sys_open+36/94>
> Trace; c0106b0a <system_call+32/38>
> 
> I've seen many of these oops. Please help.
> 
> Cristiano
> 
> ----
> GnuPG Public Key Fingerprint (certserver.pgp.com)
> pub  1024D/BF762716 2002-01-08 Cristiano Paris (privata) <c.paris@libero.it>
>      Key fingerprint = 91BA C55F 4B75 730D 5FB3  16AB 4202 9ACA BF76 2716
> 
> -
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-- 
Q: How is software like drug addiction?
A: Periodically you need a fix, and a patch will cure all your ills.
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