Bug#465460: asterisk: occasional system freeze with local channels

[Philipp Berndt]

Package: asterisk
Version: 1:1.2.13~dfsg-2etch2
Severity: critical
Tags: patch
Justification: breaks the whole system

In channels/chan_local.c: Occasionally (but reproducable under stress
test) system becomes unusable when asterisk tries e.g. a billion times to get a lock on the channel.

Suggested work-around:
Try to detect live-lock prone state (e.g. softhangup pending), also limit the number of locking attempts.

-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.22.7
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)

Versions of packages asterisk depends on:
ii  adduser            3.102                 Add and remove users and groups
ii  asterisk-bristuff  1:1.2.13~dfsg-2etch2  Open Source Private Branch Exchang

asterisk recommends no packages.

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