On 04/02/2009 08:52 AM, Tejun Heo wrote:
> Niel Lambrechts wrote:
>   
>>> Attached is the debug patch.  Please reproduce the problem with the
>>> patch applied and post full kernel log.
>>>   
>>>       
>> Hi there,
>>
>> Here is the output, it took 2 attempts to reproduce the EXT4 corruption
>> (clean with errors).
>>     
>
> Strange.  Maybe IO commands are getting through while the sdev is
> still in quiesce state?  Can you please repeat the test with the
> attached patch?
>   
Hi Tejun,

Thanks for your help, I've done at least 5 hibernate cycles without the
problem recurring, I'll keep at it for a while... :)

For the sake of being thorough, I'd like to mention some of the
remaining issues/messages, but to be honest some of them were there
before and may not be relevant to your efforts:

1) Can you perhaps confirm if the remaining ATA messages are harmless
enough to ignore?

dmesg:
ata2: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0x1e frozen
ata2: irq_stat 0x00400040, connection status changed
ata2: SError: { PHYRdyChg CommWake DevExch }
Clocksource tsc unstable (delta = -412838835 ns)

and in messages:
Apr  2 12:31:44 linux-7vph kernel: ata1: exception Emask 0x10 SAct 0x0
SErr 0x0 action 0x9 t4

2) The screen remains blank on resume, right until I both press a key
_and_ touch the touchpad. Weird, but this happens in 2.6.28.9 as well,
perhaps this is i915 related.

Thanks very much for sorting the more serious issue so quickly!

Regards,
Niel