Re: script exits prematurely with no stderr output, but with system errors

From	Larry Martell <larry.martell@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: script exits prematurely with no stderr output, but with system errors
Date	2016-03-20 16:55 -0400
Message-ID	<mailman.411.1458507363.12893.python-list@python.org> (permalink)
References	<CACwCsY4T5fJmPjuE7wDxJ+kzLtuxRZaw+zxW7Oo_KwjK+xAq2Q@mail.gmail.com> <CAPM-O+wykRfwe77oMG==pLvXdNCub5zBjU-9k7vqQBJx7xn6ug@mail.gmail.com>

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On Sun, Mar 20, 2016 at 4:47 PM, Joel Goldstick
<joel.goldstick@gmail.com> wrote:
> On Sun, Mar 20, 2016 at 4:32 PM, Larry Martell <larry.martell@gmail.com>
> wrote:
>
>> I have a script that I run a lot - at least 10 time every day. Usually
>> it works fine. But sometime it just stops running with nothing output
>> to stdout or stderr. I've been trying to debug this for a while, and
>> today I looked in the system logs and saw this:
>>
>> abrt: detected unhandled Python exception in
>> '/home/prod_user/python/make_workitem_list.py'
>> abrtd: Directory 'pyhook-2016-03-19-22:20:43-26461' creation detected
>> abrt-server[3688]: Saved Python crash dump of pid 26461 to
>> /var/spool/abrt/pyhook-2016-03-19-22:20:43-26461
>> abrtd: Executable '/home/prod_user/python/make_workitem_list.py'
>> doesn't belong to any package and ProcessUnpackaged is set to 'no'
>> abrtd: 'post-create' on
>> '/var/spool/abrt/pyhook-2016-03-19-22:20:43-26461' exited with 1
>> abrtd: Deleting problem directory
>> '/var/spool/abrt/pyhook-2016-03-19-22:20:43-26461'
>> abrtd: make_workitem_list: page allocation failure. order:1, mode:0x20
>> abrtd: Pid: 31870, comm: make_workitem_list Not tainted
>> 2.6.32-573.12.1.el6.x86_64 #1
>>
>> I have never seen anything like this before. Usually, if there is an
>> unhandled exception something is dumped to stderr. Anyone have any
>> idea what is going on? How can I get it to not delete this crash dump
>> it mentioned? I guess I can put a big exception handler around the
>> enter script with a traceback.
>>
>> This is on Red Hat Enterprise Linux Server release 6.7 (Santiago).
>
> Googling I found this:
> http://stackoverflow.com/questions/2628901/interpreting-kernel-message-page-allocation-failure-order1
>
> It seems that the kernel can't allocate memory is a likely cause.

Yes, I was thinking that as well about the "page allocation failure"
message, but it's almost like there were 2 errors, the first being the
unhandled exception. But why would it not output something to stderr?

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Re: script exits prematurely with no stderr output, but with system errors Larry Martell <larry.martell@gmail.com> - 2016-03-20 16:55 -0400

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