RE: cfservd core dumping on OSF1 V4.0

[Ferguson, Steve]

I finally got back to tracking down why cfservd was biting it.  I just built
a clean binary and tried cfrun.  cfservd dumps core.  Here's the backtrace.

I don't understand the bit about the "heuristic-fencepost".  If I need to do
something differently, please let me know what I should do with gdb.  I'm a
gdb novice.


address@hidden:cfengine# file /etc/core
/etc/core:      core dump, generated from 'cfservd'
address@hidden:cfengine# ls -al /etc/core
-rw-------   1 root     system   1925120 Aug  8 13:38 /etc/core
address@hidden:cfengine# gdb -c /etc/core bin/cfservd
GNU gdb 5.3
Copyright 2002 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 "alphaev5-dec-osf4.0f"...
Core was generated by `cfservd'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/shlib/libpthread.so...done.
Loaded symbols for /usr/shlib/libpthread.so
Reading symbols from /usr/shlib/libexc.so...done.
Loaded symbols for /usr/shlib/libexc.so
Reading symbols from /usr/shlib/libc.so...done.
Loaded symbols for /usr/shlib/libc.so
#0  0x0000000120224244 in res_send ()
(gdb) bt
#0  0x0000000120224244 in res_send ()
#1  0x0000000120223070 in res_query ()
#2  0x0000000120223860 in res_querydomain ()
#3  0x00000001202233c8 in res_search ()
#4  0x000000012020ca58 in sia_getpasswd ()
#5  0x000000012020d400 in gethostbyname_r ()
#6  0x000000012020cd00 in sia_getpasswd ()
#7  0x000000012020bcd8 in sia_getpasswd ()
warning: Hit heuristic-fence-post without finding
warning: enclosing function for address 0x14015f96b
This warning occurs if you are debugging a function without any symbols
(for example, in a stripped executable).  In that case, you may wish to
increase the size of the search with the `set heuristic-fence-post' command.

Otherwise, you told GDB there was a function where there isn't one, or
(more likely) you have encountered a bug in GDB.
(gdb)

Can anyone help me out with why cfservd is dying when it's contacted on my
OSF V4.0 boxes?

Steve

> -----Original Message-----
> From: Andrew Stribblehill [mailto:address@hidden
> Sent: Wednesday, July 16, 2003 1:05 PM
> To: Ferguson, Steve
> Subject: Re: cfservd core dumping on OSF1 V4.0 (was: 
> snprintf.c on OSF1
> V4 .0)
> 
> 
> Quoting Ferguson, Steve <address@hidden> 
> (2003-07-16 17:35:42 BST):
> > Already built it with -g.  What do I need to run in order 
> to provide you
> > with the backtrace?
> 
> Great. Assuming you have gdb, just do
> 
> gdb -c /path/to/core/file /path/to/buggy/binary
> gdb> bt
> gdb> ^D
> 
> Please email the outcome to the bug-cfengine list.
> 
> Thanks.
> -- 
> LUNDY
> VARIABLE OR CYCLONIC 3 OR 4 BECOMING WESTERLY 5 TO 7. THUNDERY
> RAIN. MODERATE OCCASIONALLY POOR
>