[asterisk-bugs] [JIRA] (ASTERISK-23669) Intermittent segfault in string functions

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-23669:
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             Summary: Intermittent segfault in string functions
                 Key: ASTERISK-23669
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23669
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Functions/func_strings
    Affects Versions: SVN, 1.8.26.1, 12.2.0
         Environment: Slackware linux 13.1, 64-bit, kernel 3.10.24, kernel 3.10.34 
            Reporter: Roel van Meer
            Severity: Minor


When an incoming SIP call is received, asterisk crashes. This happens intermittently, sometimes often, sometimes only seldom. The crash seems to happen at or just after a specific entry in my dialplan, which is:
{noformat}
exten => call-queue1,n,Log(NOTICE,${CALLID}: ---${REPLACE(REPLACE(QUEUE_MEMBER_LIST(${INCOMING_ACTION}),"Local/@phoneSIP"),",", )}---)
{noformat}

If the crash occurs, there is no result of the Log() in the asterisk log.

I have been able to distill this to the following reproduction case:
{noformat}
exten => test,1,Set(TEST=Local/220 at phone,1)
exten => test,n,Log(NOTICE,---${REPLACE(REPLACE(TEST,"Local/@phoneSIP"),",", )}---)
{noformat}

Note that the original string from the queue memberships was longer: Local/220 at phone,SIP/714,Local/210 at phone,SIP/195.
Shortening the string makes the crash go away at some point.

The two dialplan lines shown above are a constant reproducer for me.




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