[syslog-ng] Error message in syslog-ng (LOGMSG_REFCACHE_VALUE_TO_REF(old_value) >= 1)

[Laszlo Szemere (lszemere)]

Hello Soyef,

 the assertion is related to message reference counting. (particularly dropped by this code segment: https://github.com/syslog-ng/syslog-ng/blob/master/lib/logmsg/logmsg.c#L1521)
 It is indicating that there was an unexpected scenario, and it might be a bug. Therefore I would rather continue this investigation as a https://github.com/syslog-ng/syslog-ng/issues issue. But if you would like to stay with the mailing list it is also excellent.

 We need as many information about your system as possible to investigate why this is happening.

  *   Version of syslog-ng: printed by "syslog-ng --version"
  *   Origin of syslog-ng. (How was it built?) It was coming from an official repository, or you compiled it from source code?
  *   The platform it is running on.
  *   The configuration you are using, while the error occurred.
  *   If your system is configured in that way, there should be a "core file" generated while this error happening. gdb can print the backtrace from that core file, which would be really helpful. (Please be careful! The backtrace MIGHT contains segments of log messages, and those segments might contains sensitive information.)

Thank You in advance!
Laci

________________________________
From: syslog-ng <syslog-ng-bounces at lists.balabit.hu> on behalf of Ahmed Soyef <Soyef.Ahmed34 at homeoffice.gov.uk>
Sent: Wednesday, July 29, 2020 13:19
To: syslog-ng at lists.balabit.hu <syslog-ng at lists.balabit.hu>
Subject: [syslog-ng] Error message in syslog-ng (LOGMSG_REFCACHE_VALUE_TO_REF(old_value) >= 1)

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Hi All,



We’re seeing some instances of this error message

ERROR:lib/logmsg/logmsg.c:1521:log_msg_ref: assertion failed: (LOGMSG_REFCACHE_VALUE_TO_REF(old_value) >= 1)

I’ve had a quick search about and can’t figure out what it actually means. Can anyone shed some light and possibly some guidance on how to avoid it happening?



Regards,



Soyef

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