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Update for 22.7.0-rc2
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Asterisk Development Team
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ChangeLogs/ChangeLog-22.7.0-rc1.html
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ChangeLogs/ChangeLog-22.7.0-rc2.html
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ChangeLogs/ChangeLog-22.7.0-rc1.md
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ChangeLogs/ChangeLog-22.7.0-rc2.md
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ChangeLogs/ChangeLog-22.7.0-rc2.html
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<html><head><title>ChangeLog for asterisk-22.7.0-rc2</title></head><body>
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<h2>Change Log for Release asterisk-22.7.0-rc2</h2>
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<h3>Links:</h3>
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<ul>
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<li><a href="https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-22.7.0-rc2.html">Full ChangeLog</a> </li>
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<li><a href="https://github.com/asterisk/asterisk/compare/22.7.0-rc1...22.7.0-rc2">GitHub Diff</a> </li>
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<li><a href="https://downloads.asterisk.org/pub/telephony/asterisk/asterisk-22.7.0-rc2.tar.gz">Tarball</a> </li>
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<li><a href="https://downloads.asterisk.org/pub/telephony/asterisk">Downloads</a> </li>
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</ul>
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<h3>Summary:</h3>
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<ul>
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<li>Commits: 1</li>
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<li>Commit Authors: 1</li>
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<li>Issues Resolved: 1</li>
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<li>Security Advisories Resolved: 0</li>
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</ul>
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<h3>User Notes:</h3>
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<h3>Upgrade Notes:</h3>
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<h3>Developer Notes:</h3>
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<h3>Commit Authors:</h3>
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<ul>
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<li>George Joseph: (1)</li>
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</ul>
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<h2>Issue and Commit Detail:</h2>
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<h3>Closed Issues:</h3>
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<ul>
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<li>1578: [bug]: Deadlock with externalMedia custom channel id and cpp map channel backend</li>
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</ul>
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<h3>Commits By Author:</h3>
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<ul>
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<li>
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<h4>George Joseph (1):</h4>
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</li>
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</ul>
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<h3>Commit List:</h3>
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<ul>
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<li>channelstorage: Allow storage driver read locking to be skipped.</li>
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</ul>
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<h3>Commit Details:</h3>
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<h4>channelstorage: Allow storage driver read locking to be skipped.</h4>
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<p>Author: George Joseph
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Date: 2025-11-06</p>
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<p>After PR #1498 added read locking to channelstorage_cpp_map_name_id, if ARI
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channels/externalMedia was called with a custom channel id AND the
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cpp_map_name_id channel storage backend is in use, a deadlock can occur when
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hanging up the channel. It's actually triggered in
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channel.c:__ast_channel_alloc_ap() when it gets a write lock on the
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channelstorage driver then subsequently does a lookup for channel uniqueid
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which now does a read lock. This is an invalid operation and causes the lock
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state to get "bad". When the channels try to hang up, a write lock is
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attempted again which hangs and causes the deadlock.</p>
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<p>Now instead of the cpp_map_name_id channelstorage driver "get" APIs
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automatically performing a read lock, they take a "lock" parameter which
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allows a caller who already has a write lock to indicate that the "get" API
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must not attempt its own lock. This prevents the state from getting mesed up.</p>
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<p>The ao2_legacy driver uses the ao2 container's recursive mutex so doesn't
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have this issue but since it also implements the common channelstorage API,
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it needed its "get" implementations updated to take the lock parameter. They
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just don't use it.</p>
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<p>Resolves: #1578</p>
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</body></html>
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ChangeLogs/ChangeLog-22.7.0-rc2.md
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ChangeLogs/ChangeLog-22.7.0-rc2.md
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## Change Log for Release asterisk-22.7.0-rc2
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### Links:
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- [Full ChangeLog](https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-22.7.0-rc2.html)
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- [GitHub Diff](https://github.com/asterisk/asterisk/compare/22.7.0-rc1...22.7.0-rc2)
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- [Tarball](https://downloads.asterisk.org/pub/telephony/asterisk/asterisk-22.7.0-rc2.tar.gz)
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- [Downloads](https://downloads.asterisk.org/pub/telephony/asterisk)
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### Summary:
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- Commits: 1
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- Commit Authors: 1
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- Issues Resolved: 1
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- Security Advisories Resolved: 0
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### User Notes:
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### Upgrade Notes:
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### Developer Notes:
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### Commit Authors:
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- George Joseph: (1)
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## Issue and Commit Detail:
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### Closed Issues:
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- 1578: [bug]: Deadlock with externalMedia custom channel id and cpp map channel backend
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### Commits By Author:
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- #### George Joseph (1):
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### Commit List:
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- channelstorage: Allow storage driver read locking to be skipped.
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### Commit Details:
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#### channelstorage: Allow storage driver read locking to be skipped.
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Author: George Joseph
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Date: 2025-11-06
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After PR #1498 added read locking to channelstorage_cpp_map_name_id, if ARI
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channels/externalMedia was called with a custom channel id AND the
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cpp_map_name_id channel storage backend is in use, a deadlock can occur when
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hanging up the channel. It's actually triggered in
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channel.c:__ast_channel_alloc_ap() when it gets a write lock on the
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channelstorage driver then subsequently does a lookup for channel uniqueid
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which now does a read lock. This is an invalid operation and causes the lock
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state to get "bad". When the channels try to hang up, a write lock is
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attempted again which hangs and causes the deadlock.
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Now instead of the cpp_map_name_id channelstorage driver "get" APIs
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automatically performing a read lock, they take a "lock" parameter which
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allows a caller who already has a write lock to indicate that the "get" API
|
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must not attempt its own lock. This prevents the state from getting mesed up.
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The ao2_legacy driver uses the ao2 container's recursive mutex so doesn't
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have this issue but since it also implements the common channelstorage API,
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it needed its "get" implementations updated to take the lock parameter. They
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just don't use it.
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Resolves: #1578
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@@ -1,4 +1,4 @@
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<html><head><title>Readme for asterisk-22.7.0-rc1</title></head><body>
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<html><head><title>Readme for asterisk-22.7.0-rc2</title></head><body>
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<h1>The Asterisk(R) Open Source PBX</h1>
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<pre><code>By Mark Spencer <markster@digium.com> and the Asterisk.org developer community.
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Copyright (C) 2001-2025 Sangoma Technologies Corporation and other copyright holders.
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@@ -37,7 +37,7 @@ hardware.</p>
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<p>If you are updating from a previous version of Asterisk, make sure you
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read the Change Logs.</p>
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<!-- CHANGELOGS (the URL will change based on the location of this README) -->
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<p><a href="ChangeLogs/ChangeLog-22.7.0-rc1.html">Change Logs</a></p>
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<p><a href="ChangeLogs/ChangeLog-22.7.0-rc2.html">Change Logs</a></p>
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<!-- END-CHANGELOGS -->
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<h3>NEW INSTALLATIONS</h3>
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@@ -55,7 +55,7 @@ If you are updating from a previous version of Asterisk, make sure you
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read the Change Logs.
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<!-- CHANGELOGS (the URL will change based on the location of this README) -->
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[Change Logs](ChangeLogs/ChangeLog-22.7.0-rc1.html)
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[Change Logs](ChangeLogs/ChangeLog-22.7.0-rc2.html)
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<!-- END-CHANGELOGS -->
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### NEW INSTALLATIONS
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