Here is a better trace of the call: https://pastebin.com/gWpQR8E7

Ben Newlin

From: Ben Newlin <ben.new...@genesys.com>
Date: Monday, October 22, 2018 at 4:34 PM
To: OpenSIPS devel mailling list <devel@lists.opensips.org>
Subject: OpenSIPS Crash

Hello,

We have been having sporadic crashes and I was recently able to recover a core 
dump for one. I have uploaded it here: https://pastebin.com/ABktcYcH.

I picked out a Call-ID from the crash data and took a look in our tracing. I 
have uploaded it here: https://pastebin.com/ZEzUUKZ5.

It appears that a downstream server was extremely lagged and failed to respond 
to an INVITE. We sent the INVITE to another server and the call was connected, 
but then eventually the original server “caught up” and sent a burst of 200 OK 
responses. The crash seems to have occurred processing the ACK to one of these 
responses.

Ben Newlin
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