The log isn't telling you anything other than that it's crashed. The question is why.
If you run the same version & config on a different environment you'll probably have the same issues.
The time dependence of the crashes would suggest it's crashing when a specific race condition is met. This could be a call coming in with an invalid Caller ID you're trying to parse as an int, a routing block that's seldom called being called, a resource limitation on the system, or something totally different.
This is a pretty generic crash message, so without more debugging it's just guesswork, so let's enable debugging:
The start of the OpenSIPs config file is where we enable, here's how the default config looks (assuming you've built off the standard template):
####### Global Parameters #########
log_level=3
log_stderror=no
log_facility=LOG_LOCAL0
children=4
/* uncomment the following lines to enable debugging */
#debug_mode=yes
If you change yours to:
####### Global Parameters #########
log_level=8
log_stderror=yes
log_facility=LOG_LOCAL0
children=4
/* uncomment the following lines to enable debugging */
debug_mode=yes
You'll have debugging features enabled and a whole lot more info available in syslog.
Once you've done that sit back and wait for 2 days until it crashes, and you'll have an answer as to what module / routing block / packet is causing your instance to crash.
After that you can post the output here along with your config file, but there's a pretty high chance that someone on the OpenSIPs or Kamailio mailing lists will have had the same issue before.
