[rsyslog] Problems with rsyslog Versions > 8.16 and Thread-Handling

David Lang david at lang.hm
Thu Jan 12 12:48:31 CET 2017


is the version you are using linked to json-c or libfastjson?

we know there were thread-safe problems as a result of json-c

David Lang

On Thu, 12 Jan 2017, Christopher Racky via rsyslog wrote:

> Date: Thu, 12 Jan 2017 12:43:31 +0100
> From: Christopher Racky via rsyslog <rsyslog at lists.adiscon.com>
> To: rsyslog-users <rsyslog at lists.adiscon.com>
> Cc: Christopher Racky <christopher.racky at gmail.com>
> Subject: [rsyslog] Problems with rsyslog Versions > 8.16 and Thread-Handling
> 
> Hello,
>
> I still have big issues with different Servers running RHEL 6.8 (incl.
> latest updates) and rsyslog > 8.16.
>
> While 8.16 works fine, all following versions, including 8.24 which
> was released a few days ago leads to problems that results in
> core-dumps:
> rsyslogd[1408]: segfault at 7f9f2910b9d0 ip 00007f9f2e18e213 sp
> 00007ffd3d9fe080 error 4 in libpthread-2.12.so[7f9f2e186000+17000]
> rsyslogd[4201]: segfault at 7f991c0789d0 ip 00007f99210fb213 sp
> 00007ffec5155240 error 4 in libpthread-2.12.so[7f99210f3000+17000]
> rsyslogd[2783]: segfault at 7f5f695399d0 ip 00007f5f6e5bd213 sp
> 00007ffe4b4da5c0 error 4 in libpthread-2.12.so[7f5f6e5b5000+17000]
> rsyslogd[6816]: segfault at 7f519ad269d0 ip 00007f519fdaa213 sp
> 00007ffd22bf2470 error 4 in libpthread-2.12.so[7f519fda2000+17000]
>
>
> My hope was that this topic was solved by
> https://github.com/rsyslog/rsyslog/pull/1274
>
> But it was not.
> As problems seems not (directly) related to lookup-table, I guess it
> also has a problem with thread handling.
> https://github.com/rsyslog/rsyslog/issues/1071
>
> Do you have any further idea?
>
> With single-thread mode problem does not appear and also in lab, I was
> not able to reproduce it.
> But on several production servers the issue occures quite often.
>
>
> regards
> Chris
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