debugging frequent kernel panics on 8.2-RELEASE

Steven Hartland killing at
Thu Aug 11 17:15:11 UTC 2011

----- Original Message ----- 
From: "Andriy Gapon" <avg at>

>>> I would really appreciate if you could try to reproduce the
>>> problem with the patch that I sent earlier.
>> Hi Andriy, what's the risk of this patch causing other issues?
> I can not estimate.
> The code is supposed to affect only things that happen after panic,
> so make your guess.

So in theory should be good.

>> I ask as to get results from this we've going to have to roll it
>> out to over 130+ production machines, so I'd like to be clear on
>> the risks before I sign that off.
> I will be happy if you try the patch on a single machine
> provided the problem is that reproducible.

Unfortunately although its happening a lot its taking the
large numbers of machines to make it that way.

Over the 130+ machines we're seeing between 3 and 8 panics
a day, so based on that we could be waiting quite some time
for a specific machine to panic :(

Don't think we're going to make any progress on this in the current
state so I think we'll give it a shot.


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