From eabe99a23cacfeeec1afdfc8d17f668148b1cfc5 Mon Sep 17 00:00:00 2001
From: Matthew Jordan <mjordan@digium.com>
Date: Tue, 15 Jan 2013 03:47:58 +0000
Subject: [PATCH] Blocked revisions 379091

........
Prevent crash in ConfBridge due to race condition when channels leave bridge

When a channel leaves a bridge, a race condition existed where the
bridge_channel's pvt structure would be accessed after it was disposed of.
This patch prevents that by setting the pointer to the pvt to NULL prior
to disposing of it.

Note that this patch is a backport from Asterisk 10. This particular race
condition was fixed as part of the larger code rework that occurred for that
release.

The solution to this problem was pointed out by Gunnar Harms in ASTERISK-16640.

(closes issue ASTERISK-16640)
Reported by: thomas987

(closes issue ASTERISK-16835)
Reported by: saghul


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@379092 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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