[asterisk-bugs] [JIRA] Commented: (ASTERISK-20553) Locks and linked list corruption

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=198260#comment-198260 ] 

Matt Jordan commented on ASTERISK-20553:
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In each of these backtraces, {{codec_sangoma}} (most often) is holding a lot of locks around the format list.  It appears as if something has either locked the reentrancy lock and not unlocked it (very bad), or there is a recursive case with the read-write locks that isn't shown in the backtraces (also very bad).
# Does this problem occur if {{codec_sangoma}} is not used?
# Has Sangoma provided a {{codec_sangoma}} for Asterisk 11?  If not, I would not expect one built for Asterisk 1.8 to be compatible with Asterisk 11.
# Does this occur when you don't have {{DEBUG_THREADS}} enabled?  Since things are blocking on the reentrancy lock, you have it defined, and not only will this slow down the system significantly, but it may be actually whats causing this problem.

> Locks and linked list corruption
> --------------------------------
>
>                 Key: ASTERISK-20553
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20553
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/PBX
>    Affects Versions: 11.0.0
>         Environment: CentOS release 6.3 (Final) Linux 2.6.32-279.5.2.el6.x86_64 
>            Reporter: Octavio Ruiz
>            Severity: Critical
>         Attachments: core.1.bt, core.2.bt, core.3.bt
>
>
> When using Asterisk 11 beta1, beta2 and release candidate 1 as a SIP to SIP gateway transcoding calls from G.711 to G.729 using a Sangoma D100 card it segfaults randomly. Backtraces does not seems to relate the use of this card to the segfaults, last known version that worked stable was 1.8.12.

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