From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Permes <christoph.permes@domain.hid>
Date: Thu, 08 Oct 2009 17:03:05 +0200
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Subject: [Xenomai-help] rt_print segfault on program termination
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To: xenomai@xenomai.org

Hi,

We use a vmware virtual machine for simulation and testing our realtime
applications.
Every time when a realtime application terminates the following core
dump occures:

Program terminated with signal 11, Segmentation fault.
[New process 11728]
[New process 11726]
[New process 11727]
#0  0xb7e3e675 in free () from /lib/libc.so.6
(gdb) bt
#0  0xb7e3e675 in free () from /lib/libc.so.6
#1  0xb80551dd in cleanup_buffer (buffer=0x81dd210) at rt_print.c:350
#2  0xb7dbee27 in __nptl_deallocate_tsd () from /lib/libpthread.so.0
#3  0xb7dbff49 in start_thread () from /lib/libpthread.so.0
#4  0xb7e9cb6e in clone () from /lib/libc.so.6

The line where the segfault occures is
free(buffer->ring);

The segfault never happens when running on a real machine, so it's no
problem when running in production, but it is annoying when every run in
the test environment leads to a segmentation fault.

Maybe it is a timing related issue as there are no problems on a real
machine.

Thanks,
Christoph