Description of problem:

I hit this problem when testing bz739084. Simple bash loop with cman_tool join and cman_tool leave commands was run on all cluster nodes (3-node cluster, ia64 arch). As a result, core files are generated in /var/log/openais on all nodes.


Version-Release number of selected component (if applicable):
openais-0.80.3-22.el5_3.17
openais-0.80.3-22.el5_3.16

How reproducible:
100%

Steps to Reproduce:
1. enable creating of core files
2. run simple bash loop with cman_tool join/leave on all cluster nodes:
   ( while true; do cman_tool join; cman_tool leave; done )
3. core files are generated in /var/lib/openais
  
Actual results:
-core files generated

Expected results:
-no core files

Additional info:

gdb output of core file generated with the cman_tool join/leave loop run

[root@a2 cores_2]# gdb `which aisexec` core.9109
GNU gdb Fedora (6.8-27.el5)
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "ia64-redhat-linux-gnu"...

warning: Can't read pathname for load map: Input/output error.
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libpthread.so.0...done.
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /lib/libc.so.6.1...done.
Loaded symbols for /lib/libc.so.6.1
Reading symbols from /lib/ld-linux-ia64.so.2...done.
Loaded symbols for /lib/ld-linux-ia64.so.2
Reading symbols from /usr/libexec/lcrso/objdb.lcrso...Reading symbols from
/usr/lib/debug/usr/libexec/lcrso/objdb.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/objdb.lcrso
Reading symbols from /usr/libexec/lcrso/service_cman.lcrso...done.
Loaded symbols for /usr/libexec/lcrso/service_cman.lcrso
Reading symbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /usr/libexec/lcrso/service_cpg.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_cpg.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_cpg.lcrso
Reading symbols from /usr/libexec/lcrso/service_cfg.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_cfg.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_cfg.lcrso
Reading symbols from /usr/libexec/lcrso/service_msg.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_msg.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_msg.lcrso
Reading symbols from /usr/libexec/lcrso/service_lck.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_lck.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_lck.lcrso
Reading symbols from /usr/libexec/lcrso/service_evt.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_evt.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_evt.lcrso
Reading symbols from /usr/libexec/lcrso/service_ckpt.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_ckpt.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_ckpt.lcrso
Reading symbols from /usr/libexec/lcrso/service_amf.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_amf.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_amf.lcrso
Reading symbols from /usr/libexec/lcrso/service_clm.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_clm.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_clm.lcrso
Reading symbols from /usr/libexec/lcrso/service_evs.lcrso...Reading symbols
from /usr/lib/debug/usr/libexec/lcrso/service_evs.lcrso.debug...done.
done.
Loaded symbols for /usr/libexec/lcrso/service_evs.lcrso
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Core was generated by `aisexec'.
Program terminated with signal 11, Segmentation fault.
[New process 9109]
[New process 9110]
#0  0x2000000000d6f7c0 in unbind_con () from
/usr/libexec/lcrso/service_cman.lcrso
(gdb) bt
#0  0x2000000000d6f7c0 in unbind_con () from
/usr/libexec/lcrso/service_cman.lcrso
#1  0x2000000000d68f40 in ?? () from /usr/libexec/lcrso/service_cman.lcrso
#2  0x2000000000d69390 in ?? () from /usr/libexec/lcrso/service_cman.lcrso
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
(gdb)