[asterisk-bugs] [Asterisk 0016432]: racecondition leading to deadlock in chan_local
Asterisk Bug Tracker
noreply at bugs.digium.com
Thu Feb 11 09:40:58 CST 2010
A NOTE has been added to this issue.
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https://issues.asterisk.org/view.php?id=16432
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Reported By: fnordian
Assigned To:
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Project: Asterisk
Issue ID: 16432
Category: Channels/chan_local
Reproducibility: random
Severity: major
Priority: normal
Status: acknowledged
Asterisk Version: SVN
JIRA: SWP-528
Regression: No
Reviewboard Link:
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.1
SVN Revision (number only!): 230432
Request Review:
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Date Submitted: 2009-12-11 10:12 CST
Last Modified: 2010-02-11 09:40 CST
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Summary: racecondition leading to deadlock in chan_local
Description:
Hi,
there's a race in chan_local between local_hangup and queuing a dtmf
(ast_senddigit ... local_queue_frame), which can cause hanging channels and
a hanging ast_senddigit.
This is possible because local_digit_*-functions assume that they were
called on an unlocked channel, which is not always the cases, e.g.
manager_play_dtmf uses a locked channel to call ast_senddigit. With this
wrong assumption, deadlock_avoidance code is not called.
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(0117993) skochen (reporter) - 2010-02-11 09:40
https://issues.asterisk.org/view.php?id=16432#c117993
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I know it's not a lot to go by, but we're now running the server in
question on version 1.4.26. The uptime just passed the two week mark.
So it might have been a change somewhere between 1.4.26 and 1.4.28. That's
a large window, though.
Issue History
Date Modified Username Field Change
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2010-02-11 09:40 skochen Note Added: 0117993
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