[arch-general] mdadm segfaults with kernel 2.6.38.2

[Ionuț Bîru]

On 04/12/2011 03:17 AM, Norbert Zeh wrote:
> Norbert Zeh [2011.04.11 2102 -0300]:
>> Divan Santana [2011.04.11 2132 +0200]:
>>> On Monday 11 April 2011 20:58:40 Norbert Zeh wrote:
>>>> I just upgraded to the latest kernel.  The /etc/rc.d/mdadm script, which
>>>> starts mdadm in monitor mode, reports a segmentation fault in
>>>> mdadm --monitor --oneshot --scan.
>>>>
>>>> I also tried to manually start, e.g., mdadm --monitor /dev/md0, and get
>>>> a segmentation fault there, too.
>>>>
>>>> Since this did not happen before the kernel upgrade and mdadm interacts
>>>> rather closely with the kernel, I suspect that some change in the latest
>>>> kernel is to blame for this.
>>>>
>>>> Did anybody else run into the same problem?
>>>
>>>> Where would I start
>>>> debugging it?
>>>
>>> Downgrade to 2.6.37.5/6 and confirm it's the kernel.
>>> Then search for a bug, join the bug report, or file one.
>>
>> I had this on my to-do list already, but I appreciate the suggestion.
>> Now, the good news is: it's not the kernel, as the same thing happens
>> with the kernel I was running previously: 2.6.37.5.
>>
>> The bad news: it still happens, and I think I know the culprit.  mdadm
>> was upgraded along with my kernel upgrade.  So occam's razor suggests
>> the new version of mdadm itself is to blame for the segfault.
>> Unfortunately, while I diligently keep old versions of my kernel
>> package, I don't have the previous version of mdadm lying around to
>> investigate this further.  Any suggestions?
>
> And things got even stranger just now, with a silver lining.  The
> version of mdadm found in [core] is 3.2.1.  ABS, on the other hand,
> still has the old version (3.1.5).  Isn't ABS supposed to be the
> official source tree for the official repos?  Maybe I misunderstand the
> relationship between ABS and the repos.
>

abs is synchronized once a day


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