[hobbit] bbtest crash & core dumping

[Allan.Marillier at dana.com]

I posted a new query a week or so ago because I was having the same 
problem even after I had added --no-ares to my hobbitlaunch.cfg so I 
thought it might be a different issue.

Yesterday I tried moving my hobbit workload to a Fedora 6 system and I 
have the same problem. This is no longer erratic, it's all the time. Any 
other suggestions?

>From my hobbitlaunch.cfg:

[bbnet]
        ENVFILE /usr/lib/hobbit/server/etc/hobbitserver.cfg
        NEEDS hobbitd
        CMD bbtest-net --report --ping --checkresponse --no-ares
        LOGFILE $BBSERVERLOGS/bb-network.log
        INTERVAL 5m

>From the gdb dump analysis:


# gdb /usr/lib/hobbit/server/bin/hobbitd_client core.18931
GNU gdb Red Hat Linux (6.5-15.fc6rh)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you 
are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for 
details.
This GDB was configured as "i386-redhat-linux-gnu"...
(no debugging symbols found)
Using host libthread_db library "/lib/i686/nosegneg/libthread_db.so.1".


warning: Can't read pathname for load map: Input/output error.
Reading symbols from /lib/libpcre.so.0...(no debugging symbols 
found)...done.
Loaded symbols for /lib/libpcre.so.0
Reading symbols from /lib/i686/nosegneg/libc.so.6...(no debugging symbols 
found)...done.
Loaded symbols for /lib/i686/nosegneg/libc.so.6
Reading symbols from /lib/ld-linux.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib/ld-linux.so.2
Failed to read a valid object file image from memory.
Core was generated by `hobbitd_client'.
Program terminated with signal 6, Aborted.
#0  0x005a3402 in ?? ()
(gdb) bt
#0  0x005a3402 in ?? ()
#1  0x00af8f30 in raise () from /lib/i686/nosegneg/libc.so.6
#2  0x00afa811 in abort () from /lib/i686/nosegneg/libc.so.6
#3  0x08062363 in ?? ()
#4  0x0806cee0 in pcre_free ()
#5  0x00000000 in ?? ()
(gdb)






henrik at hswn.dk (Henrik Stoerner) 
01/22/2007 10:56 AM
Please respond to
hobbit at hswn.dk


To
hobbit at hswn.dk
cc

Subject
Re: [hobbit] bbtest crash & core dumping






On Mon, Jan 22, 2007 at 10:29:49AM -0500, Allan.Marillier at dana.com wrote:
> I have a problem on a Fedora Core 5 server that comes up at random 
> intervals with Henrik's rpm version of hobbit 4.2.0-1 where my 
bbtest-net 
> causes core dumps every 5 minutes and all tests turn purple.
> Any suggestions please? (I do have some core dumps saved but I'm not too 

> familiar with gdb debugging)

See http://www.hswn.dk/hobbit/help/known-issues.html#bugreport for
instructions.

Adding a "--no-ares" option to the bbtest-net command in
hobbitlaunch.cfg might help; we know there is a bug in the C-ARES
library used for DNS lookups, but it is apparently something which only 
triggers occasionally (or in specific setups).


Henrik


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