[sr-dev] [kamailio/kamailio] Kamailio-5.4.0 : Crashes from keepalive module (#2448)

[Daniel-Constantin Mierla]

@NGSegovia - it is what I asked in my first comments, based on what I saw in the code.

But the last backtrace shows also URI field being invalid, so maybe the ka structure is compromised/overwritten -- like already freed/destroyed while the keepalive was ongoing, and another process got the memory zone and wrote there. That's why I asked to see if the destination is eventually removed from the KA list. I am not the developer of the module, but does not look like there is a protection for this case (provided that destinations can be removed at any time)...

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