Date: Thu, 23 Nov 2000 01:07:12 +0100
From: Kurt Garloff <garloff@suse.de>
To: linux-kernel@vger.kernel.org
Cc: Matthias Andree <matthias.andree@stud.uni-dortmund.de>
Subject: Re: [2.2.17] oops in /proc/scsi/scsi
Message-ID: <20001123010712.C32555@garloff.etpnet.phys.tue.nl>
Mail-Followup-To: Kurt Garloff <garloff@suse.de>,
        linux-kernel@vger.kernel.org,
        Matthias Andree <matthias.andree@stud.uni-dortmund.de>
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In-Reply-To: <20001122020618.A1411@emma1.emma.line.org>; from matthias.andree@stud.uni-dortmund.de on Wed, Nov 22, 2000 at 02:06:18AM +0100
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Hi Matthias,

On Wed, Nov 22, 2000 at 02:06:18AM +0100, Matthias Andree wrote:
> I ran that script several times since it did not collect all devices,

Strange.

> and at one time, I got two oopsen that I decoded.
> * dc390 2.0e3

> Warning (compare_maps): ksyms_base symbol module_list_R__ver_module_list =
not found in System.map.  Ignoring ksyms_base entry
> Unable to handle kernel NULL pointer dereference at virtual address 00000=
052
> current->tss.cr3 =3D 05463000, %%cr3 =3D 05463000
> EIP:    0010:[sr_finish+112/388]
> Process rescan-scsi-bus (pid: 18301, process nr: 122, stackpage=3Dc267b00=
0)
> Call Trace: [scan_scsis+491/1076] [common_interrupt+24/32] [scan_scsis+55=
9/1076] [get_new_inode+147/312] [vsprintf+720/764] [wake_up_process+64/76] =
[__wake_up+59/68]=20
> Code: 80 48 52 20 a1 ac 99 2a c0 80 4c 18 16 08 a1 ac 99 2a c0 80=20
> Using defaults from ksymoops -t elf32-i386 -a i386
>=20
> Code;  00000000 Before first symbol
> 00000000 <_EIP>:
???

While 2.0e3 contains a bug that can cause an OOps inside the driver (just
use the echo "INQUIRY 0" >/proc/scsi/tmscsim/?), the normal bus rescanning
should not be able to trigger it. The above looks like the bug is occuring
somewhere else.
Having said this, I'd like to ask you to try 2.0e6 of the tmscsim driver and
check whether you are able to reproduce the bug.
Thanks!

Regards,
--=20
Kurt Garloff  <garloff@suse.de>                          Eindhoven, NL
GPG key: See mail header, key servers         Linux kernel development
SuSE GmbH, Nuernberg, FRG                               SCSI, Security

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