BeagleBone locked up
Tim Kientzle
tim at kientzle.com
Tue Feb 12 06:38:42 UTC 2013
On Feb 11, 2013, at 4:45 PM, Ian Lepore wrote:
> On Mon, 2013-02-11 at 19:06 -0500, Brett Wynkoop wrote:
>> Greeting-
>>
>> While building a kernel the Bone stopped responding on the net and this
>> is what I found on the console:
>>
>> ti_mmchs0: Error: current cmd NULL, already done?
>> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 5534, size: 8192
> [...]
>> ti_mmchs0: Error: current cmd NULL, already done?
>> ifaddr cache = 0xc1fbd700 is deleted
>> ti_mmchs0: Error: current cmd NULL, already done?
>> ti_mmchs0: Error: current cmd NULL, already done?
>>
>> The interesting thing is I have seen this same swap_pager error message
>> on my 32 bit x86 FreeBSD 9 box when it drops it's IDE disks and goes
>> off the net as well.
>>
>> The last I saw of the kernel recompile it was at linking just before it
>> locked up.
>>
>> Ideas?
>
> That's the second report recently of indefinite wait buffer. What it
> really means is that it has been waiting more than 20 seconds to pull a
> page (or block of pages) in from swap. That plus the cmd NULL errors
> tend to point in the direction of the mmchs driver.
This is something that's degraded fairly recently.
I only started seeing these in the last week or so.
And the BeagleBone MMCHS driver has not been
touched in a very long time.
Tim
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