Re: Reiserfs deadlock in 2.6.36

[Bastien ROUCARIES]

On Fri, Nov 26, 2010 at 5:57 PM, Bastien ROUCARIES
<roucaries.bastien@xxxxxxxxx> wrote:
> Dear frederic,
>> Hi Bastien,
>>
>> This really looks like a hung task detector report.
>> Several tasks are stuck in queue_log_writer(), waiting
>> to be woken up on the "journal->j_join_wait" event and
>> that never happens because the waker is also stuck.
>> The problem is your report doesn't show where the waker
>> is stuck, but the hung task detector reports it, it just
>> did before or after the chunk you've posted.
>>
>> If you could provide me the entire report, I could fix this
>> easily.
>
> I have manged to reproduce it after six hour of stress. Unfornatly locked was
> disabled due to a known non bug, in the init sequence. I have used sysrq -t in
> order to get more information to you.

Without debugging enable lock up take about 30 minutes to occurs but
are really hard to reproduce with debugging on

Bastien


> Do I need to try to reproduce it, with a newer kernel ? Or it is sufficient ?
>
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