Re: apache 2.4 core dump on launch, no error logging

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On Nov 17, 2016, at 9:15 AM, Rainer Canavan <rainer.canavan@xxxxxxxxxxxx> wrote:
> On Thu, Nov 17, 2016 at 4:08 PM, @lbutlr <kremels@xxxxxxxxx> wrote:
>> On Nov 17, 2016, at 3:56 AM, Nick Kew <niq@xxxxxxxxxx> wrote:
>>> On Wed, 2016-11-16 at 12:12 -0700, @lbutlr wrote:
>>>> When launching apache 2.4 I get a core dump. Nothing is logged to the http-error log. I’ve tried rebuilding it to no avail. Ideas?
>>>> 
>>> At the top of your coredump is libpcre.  Could it be that your
>>> httpd has been built against a different/slightly incompatible
>>> pcre version?
>> 
>> Maybe? I’ve rebuilt apache several times and there’s been no change in behavior, and I’ve updated all port versions as of yesterday.
>> 
>> PCRE-8.39 is installed. I’m not sure how to tell if http is trying to access a different version.
> 
> The output as posted is probably not too helpful, since it doesn't
> appear to incude a  backtrace.
> Try a 'thread apply all bt full' in gdb, it there's only one thread,
> and it's really OPENSSL_ia32_cpuid(),
> then openssl is the culprit, and it's possible that the openssl
> command line client segfaults as well,
> e.g. with openssl s_client  or openssl s_server.

openssl s_client to my imap server works fine.

> The list with pcre on the top is just the list of libraries gdb tries
> to load debug symbols from.
> To get a more useful backtrace, you have to install the debug symbols
> for all the relevant libraries,
> such that gdb does not complain "(no debugging symbols found)" on
> startup for any library that is
> referenced in any backtrace shown by 'thread apply all bt full’.

Erm. OK. That seems like a lot, but I may have to go there. I find it very puzzling that it crashes without being able to log anything at all and that there is no change after completely removing apache 2.4 and recompiling it.





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