Bug#486890: Running asterisk in RT-mode hangs on 2.6.25.7 with CONFIG_RT_GROUP_SCHED set

[Michael Bussmann]

Package: asterisk
Version: 1.2.13~dfsg-2etch4
Severity: normal

Hi,

After upgrading my system to 2.6.25.7 I noticed that asterisk suddenly
hung shortly after starting it.  The process is unkillable (but in
status R).

It worked all right when I started asterisk without realtime priority.

I recompiled the kernel without CONFIG_RT_GROUP_SCHED and asterisk
worked again even with -p set.

This might be a kernel issue, but asterisk is the only application
showing that behaviour so far.

Cheers,
MB

-- System Information:
Debian Release: 4.0
  APT prefers MB
  APT policy: (1200, 'MB'), (950, 'stable'), (900, 'stable'), (500, 'testing'), (300, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.25.7 (SMP w/1 CPU core; PREEMPT)
Locale: LANG=C, LC_CTYPE=de_DE at euro (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/dash

Versions of packages asterisk depends on:
pn  asterisk-config | aste <none>            (no description available)
pn  asterisk-sounds-main   <none>            (no description available)
ii  libasound2             1.0.13-2          ALSA library
ii  libc6                  2.3.6.ds1-13etch5 GNU C Library: Shared libraries
ii  libgsm1                1.0.10-13         Shared libraries for GSM speech co
ii  libncurses5            5.5-5             Shared libraries for terminal hand
pn  libnewt0.51            <none>            (no description available)
ii  libpq4                 8.1.11-0etch1     PostgreSQL C client library
pn  libpri1                <none>            (no description available)
ii  libspeex1              1.1.12-3etch1     The Speex Speech Codec
ii  libsqlite0             2.8.17-2          SQLite shared library
ii  libssl0.9.7            0.9.7k-3.1etch1   SSL shared libraries
pn  libtonezone1           <none>            (no description available)
ii  unixodbc               2.2.11-13         ODBC tools libraries
ii  zlib1g                 1:1.2.3-13        compression library - runtime

asterisk recommends no packages.