Re: Early-boot kernel panics from udev-165/extras/ata_id/ata_id.c

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On 01/07/2011 03:13 AM, Robby Workman wrote:
> On Thu, 6 Jan 2011 14:29:27 -0800
> Greg KH <greg@xxxxxxxxx> wrote:
> 
>> On Thu, Jan 06, 2011 at 05:02:30PM -0500, John Stanley wrote:
>>> Hello,
>>> There is a problem in udev-165/extras/ata_id/ata_id.c resulting in
>>> random early boot kernel panics.  As it stands, udev-165 is not
>>> usable because the boot panics occur to frequently.  The systems are
>>> GNU/Linux i686 with linux-2.6.36.2 and linux-2.6.37, gcc-4.5.1, and
>>> glibc-2.12.1.
>>
>> What is the kernel oops message?  That should be fixed first, no
>> userspace code should be able to crash the kernel.
> 
> 
> Hi Greg,
> 
> First, sorry for not posting something about this sooner - I'd
> pinged Kay on IRC about it, and I *promise* I had planned to
> forward it to the scsi/ati guys, but work has been hell this 
> week.  Anyway, here's the initial report we got about it, along
> with a lot of debugging by other folks (including the OP, who
> I think is 'resonance' in that thread): 
> http://www.linuxquestions.org/questions/slackware-14/current-randomly-timed-kernel-oops-on-bootup-of-two-test-boxen-852843/
> 
It's all Tejun's fault.
kernel crashing in ata_sff_data_xfer / ioread32 ...
Looks like we're trying a read to a page which wasn't
mapped/allocated properly.

And yes, it definitely should be fixed in the kernel first.

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@xxxxxxx			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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