Kernel Panics in 6.1 and 6.2 always Exim 4

Kris Kennaway kris at
Sun Sep 23 15:36:05 PDT 2007

Wil Hatfield wrote:
>> -----Original Message-----
>> From: Kris Kennaway [mailto:kris at]
>> Sent: Friday, September 21, 2007 5:20 PM
>> To: Wil Hatfield
>> Cc: freebsd-questions at
>> Subject: Re: Kernel Panics in 6.1 and 6.2 always Exim 4
>> Wil Hatfield wrote:
>>> Well after a year we still haven't tracked down the kernel
>> panic problems
>>> that are occuring on both our 6.1 and 6.2 machines for those we have had
>>> time to upgrade.  It occurs on 6.1-RC, 6.1-RELEASE 6.1-STABLE,
>> 6.2, you name
>>> it.
>>> We are noticing that all of the dumps are during Exim 4.6x runtime. I am
>>> suspicious of PR-97095 but would like others insights into the
>> possibility.
>> Well, as that PR says, the patch was committed after 6.1-RELEASE,
>> therefore it is expected that older systems will have the problem.  You
>> only provided a trace from a 6.1 machine, so if you are saying that it
>> still persists on an up-to-date RELENG_6 kernel, please file a new PR
>> with the details.
>> Kris
> Unfortunately when I upgraded the machine I have from 6.1-RELEASE to 6.2 it
> stopped dumping for me. So I have nothing to analyze. However, I still get
> the kernel panics I did before. Same frequency and always Exim.

That is quite contrary to expectations, so you should follow up with the 
PR.  Please try to at least take a photo of the panic traceback from DDB 
or something.


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