[asterisk-bugs] [JIRA] (ASTERISK-24850) chan_lcr: Deadlock caused by chan_lock interaction with channel container lock and individual channel lock

[Matt Jordan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan updated ASTERISK-24850:
-----------------------------------

    Summary: chan_lcr: Deadlock caused by chan_lock interaction with channel container lock and individual channel lock  (was: Lockup with no calls being processed, probably caused by IAX)

> chan_lcr: Deadlock caused by chan_lock interaction with channel container lock and individual channel lock
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-24850
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24850
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: General
>    Affects Versions: 11.16.0
>         Environment: Two Asterisks connected via IAX
>            Reporter: Birger "WIMPy" Harzenetter
>         Attachments: Asterisk-debug.txt
>
>
> The issue starts with warnings like the follogin one
> [Mar  6 09:32:04] WARNING[9013] channel.c: Exceptionally long voice queue length queuing to IAX2/hbc-hah-73
> about 1-2 times per second.
> After some random time in the range from half a minute to 4 minutes it changes to
> [Mar  6 09:36:23] WARNING[9009] chan_iax2.c: Max retries exceeded to host 144.76.51.196 on IAX2/hbc-hah-73 (type = 6, subclass = 2, ts=377730, seqno=114)
> every 10 seconds until I kill (-9) Asterisk.
> In that state Asterisk still answers IAX packets so that it still qualifies OK on the calling instance.
> However it completely stops processing any calls.
> On the calling box all following Dial()s to the locked up one end with DIALSTATUS=CANCEL and HANGUPCAUSE=0 so even they seem to be accepted, just not processed.
> This particular issue started 21 days after upgrading from 11.15.0, but occurred 3 times withing two weeks so far. So I'm unsure if it's related to the upgrade.



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