Nagios 3.0 RC2: Segmentation faults after starting

[Hendrik Bäcker]

Hi Christian,

Christian Schneemann schrieb:
> Hallo,
> our test Nagios dies after every restart with a segmentation fault since last 
> week.
> I have tried to find the error with gdb. I hope someone can point me to my 
> error.
> 
> 
> d139:/etc/nagios/objects/hosts # 
> gdb --args /usr/sbin/nagios /etc/nagios/nagios.cfg 
> GNU gdb 6.6
> 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 "x86_64-suse-linux"...
> (no debugging symbols found)

Please try again with a modified makefile.

You need to 'enable' the CFLAGS used for valgrind in base/Makefile and 
re-compile the binary.
After that try to run nagios against the binary in base/nagios or do a

make install-unstripped

That should include debug information to the binary and the gdb should 
be more verbose.


> Using host libthread_db library "/lib64/libthread_db.so.1".
> (gdb) run

May be the gdb command: "set follow-fork-mode child" would be nice here 
but I don't know exactly.

> Starting program: /usr/sbin/nagios /etc/nagios/nagios.cfg
> (no debugging symbols found)
<<<< SNIP >>>>>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 47105982427648 (LWP 15658)]
> 0x000000000043b90a in process_check_result_queue ()
> (gdb) bt
> #0  0x000000000043b90a in process_check_result_queue ()
> #1  0x000000000041c536 in reap_check_results ()
> #2  0x0000000000429119 in handle_timed_event ()
> #3  0x0000000000429701 in event_execution_loop ()
> #4  0x00000000004120fe in main ()

hm... check_result_queue...

Do you have any old checkresult files in the spool directory which could 
cause the problem?

Kind Regards
Hendrik

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