[asterisk-bugs] [JIRA] (ASTERISK-26861) Deadlock in setting CDR variables

[Alex Hermann (JIRA)]

Alex Hermann created ASTERISK-26861:
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             Summary: Deadlock in setting CDR variables
                 Key: ASTERISK-26861
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26861
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Functions/func_cdr
    Affects Versions: 13.14.0
         Environment: Debian sid
            Reporter: Alex Hermann


When setting many CDR variables throughout the dialplan, at some point almost all channels/threads will wait on a lock that never gets released. SIP processing stops at that point.

I don't know if it is relevant, but I set various CDR variables before the Dial command, in the contexts for Dial's 'G' and 'U' options and in the h exten for both the master and the outbound channels (by Dial's 'e' option).

The problem only manifests itself during a bit of call load on the server (as does every deadlock). I can pretty reliable reproduce it within 15k calls at max 50 cps).

{code}
CLI> core show taskprocessors
...
subm:cdr_engine-00000003                        11547039      22051       1439       4500       5000
...
{code}

I'll attach thread list and backtraces.



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