[rrd-developers] MRTG , Segmentation Fault , After re-installing perl .
Mr. James W. Laferriere
babydr at baby-dragons.com
Wed Apr 1 21:01:24 CEST 2009
Hello Kevin ,
On Thu, 12 Mar 2009, kevin brintnall wrote:
> On Thu, Mar 12, 2009 at 02:07:18PM -0800, Mr. James W. Laferriere wrote:
>> On Thu, 12 Mar 2009, kevin brintnall wrote:
>>> On Thu, Mar 12, 2009 at 10:43:16AM -0800, Mr. James W. Laferriere wrote:
>>>>
>>>> CFLAGS=-g ./configure ; CFLAGS=-g make ; CFLAGS=-g make install
>
> Somehow I think your compiler still has optimizations on.. it appears to
> be in-lining write_RRA_row. When I compile with a similar procedure,
> write_RRA_rows is not in-lined. FYI I believe you only need to specify
> the CFLAGS on the 'configure'.
>
> Can you show the command line that's being used to compile rrd_update.c ?
There are two places in the make process that that file is compiled or
built , They're in the attached file , make-rrdtool-1_3_6.rrd_update_c.log .
I also have a full make log capture if you ever need that .
> It will be very helpful to see the ds_idx value; I suspect it's this
> pointer de-reference that's causing the SIGSEGV, because all the other
> pointers look correct: rrd->ds_def[ds_idx].ds_nam
See attached , rrdtool-segfault-20090401.log .
> This could also happen if your stat_head->ds_cnt is corrupted somehow.
>
> (gdb) p rrd->stat_head->ds_cnt
> (gdb) p rrd->stat_head
See attached , rrdtool-segfault-20090401.log .
> Also, what happens if you run an equivalent 'rrdtool updatev' from the
> command line?
Don't know I'll try it (I hope I can build the proper command line) ,
Hopefully this did not break anything ... But no error that I can see ,
that is interesting ...
# /usr/local/rrdtool/bin/rrdtool updatev /var/www/htdocs/router2cgi/graphs/to-rtr01/to-rtr01_1.rrd -t ds0:ds1 `date "+%s"`:4942:3254
return_value = 0
#
# /usr/local/rrdtool/bin/rrdtool -V
RRDtool 1.3.6 Copyright 1997-2008 by Tobias Oetiker <tobi at oetiker.ch>
Compiled Feb 6 2009 09:28:18
...snip...
--
+------------------------------------------------------------------+
| James W. Laferriere | System Techniques | Give me VMS |
| Network&System Engineer | 2133 McCullam Ave | Give me Linux |
| babydr at baby-dragons.com | Fairbanks, AK. 99701 | only on AXP |
+------------------------------------------------------------------+
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[?1034hGNU gdb 6.6
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
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Type "show copying" to see the conditions.
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This GDB was configured as "i486-slackware-linux"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) set args /usr/local/mrtg-2/bin/mrtg-ORIG /var/www/htdocs/router2cgi/cfg/to-rtr01.cfg
(gdb) run
Starting program: /usr/local/bin/perl /usr/local/mrtg-2/bin/mrtg-ORIG /var/www/htdocs/router2cgi/cfg/to-rtr01.cfg
[Thread debugging using libthread_db enabled]
[New Thread -1210906944 (LWP 4125)]
Error while reading shared library symbols:
Cannot find new threads: generic error
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1210906944 (LWP 4125)]
0xb7d9f22b in strlen () from /lib/libc.so.6
(gdb) bt
#0 0xb7d9f22b in strlen () from /lib/libc.so.6
#1 0xb7d71281 in vfprintf () from /lib/libc.so.6
#2 0xb7d8fd91 in vsnprintf () from /lib/libc.so.6
#3 0xb7cbc2ac in sprintf_alloc (fmt=0xb7cc85c2 "[%lli]RRA[%s][%lu]DS[%s]") at rrd_info.c:34
#4 0xb7cc1193 in write_to_rras (rrd=0xbff20944, rrd_file=0x897b658, rra_step_cnt=<value optimized out>, rra_begin=2760,
current_time=1238611056, skip_update=0x89cdfb0, pcdp_summary=0xbff209a0) at rrd_update.c:1944
#5 0xb7cc1d1f in process_arg (step_start=0x8980460 "1238611056", rrd=0xbff20944, rrd_file=0x897b658, rra_begin=81864,
current_time=0xbff20978, current_time_usec=0xbff20974, pdp_temp=0x89cdf98, pdp_new=0x897b280, rra_step_cnt=0x897b258,
updvals=0x88878f0, tmpl_idx=0x8888fc0, tmpl_cnt=3, pcdp_summary=0xbff209a0, version=3, skip_update=0x89cdfb0,
schedule_smooth=0xbff20970) at rrd_update.c:819
#6 0xb7cc2e8a in _rrd_update (filename=0x89ce000 "/var/www/htdocs/router2cgi/graphs/to-rtr01/to-rtr01_1.rrd", tmplt=0x0, argc=1,
argv=0x885f7c0, pcdp_summary=0x88795e0) at rrd_update.c:497
#7 0xb7cc34a1 in rrd_update_v (argc=2, argv=0x885f7b8) at rrd_update.c:362
#8 0xb7cd00cf in XS_RRDs_updatev () from /usr/local/lib/perl5/site_perl/5.10.0/i686-linux//auto/RRDs/RRDs.so
#9 0x0809ed60 in Perl_pp_entersub ()
#10 0x0809d638 in Perl_runops_standard ()
#11 0x08099fa4 in perl_run ()
#12 0x0805ed7f in main ()
(gdb) p rrd->stat_head->ds_cnt
No symbol "rrd" in current context.
(gdb) p rrd->stat_head
No symbol "rrd" in current context.
(gdb) p rrd->ds_def[ds_idx].ds_nam
No symbol "rrd" in current context.
(gdb) exit
Undefined command: "exit". Try "help".
(gdb) quit
The program is running. Exit anyway? (y or n)
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if /bin/sh ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -DLOCALEDIR="\"/usr/local/rrdtool-1.3.6/share/locale\"" -DRRD_DEFAULT_FONT=\""DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier"\" -DNUMVERS=1.3006 -I/usr/include/cairo -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libxml2 -g -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -MT rrd_update.lo -MD -MP -MF ".deps/rrd_update.Tpo" -c -o rrd_update.lo rrd_update.c; \
gcc -DHAVE_CONFIG_H -I. -I. -I.. -DLOCALEDIR=\"/usr/local/rrdtool-1.3.6/share/locale\" "-DRRD_DEFAULT_FONT=\"DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier\"" -DNUMVERS=1.3006 -I/usr/include/cairo -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libxml2 -g -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -MT rrd_update.lo -MD -MP -MF .deps/rrd_update.Tpo -c rrd_update.c -fPIC -DPIC -o .libs/rrd_update.o
gcc -DHAVE_CONFIG_H -I. -I. -I.. -DLOCALEDIR=\"/usr/local/rrdtool-1.3.6/share/locale\" "-DRRD_DEFAULT_FONT=\"DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier\"" -DNUMVERS=1.3006 -I/usr/include/cairo -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libxml2 -g -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -MT rrd_update.lo -MD -MP -MF .deps/rrd_update.Tpo -c rrd_update.c -o rrd_update.o >/dev/null 2>&1
if /bin/sh ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I.. -DLOCALEDIR="\"/usr/local/rrdtool-1.3.6/share/locale\"" -DRRD_DEFAULT_FONT=\""DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier"\" -DNUMVERS=1.3006 -I/usr/include/cairo -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libxml2 -pthread -g -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -MT librrd_th_la-rrd_update.lo -MD -MP -MF ".deps/librrd_th_la-rrd_update.Tpo" -c -o librrd_th_la-rrd_update.lo `test -f 'rrd_update.c' || echo './'`rrd_update.c; \
gcc -DHAVE_CONFIG_H -I. -I. -I.. -DLOCALEDIR=\"/usr/local/rrdtool-1.3.6/share/locale\" "-DRRD_DEFAULT_FONT=\"DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier\"" -DNUMVERS=1.3006 -I/usr/include/cairo -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libxml2 -pthread -g -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -MT librrd_th_la-rrd_update.lo -MD -MP -MF .deps/librrd_th_la-rrd_update.Tpo -c rrd_update.c -fPIC -DPIC -o .libs/librrd_th_la-rrd_update.o
gcc -DHAVE_CONFIG_H -I. -I. -I.. -DLOCALEDIR=\"/usr/local/rrdtool-1.3.6/share/locale\" "-DRRD_DEFAULT_FONT=\"DejaVu Sans Mono,Bitstream Vera Sans Mono,monospace,Courier\"" -DNUMVERS=1.3006 -I/usr/include/cairo -I/usr/include/libpng12 -I/usr/include/freetype2 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/libxml2 -pthread -g -D_GNU_SOURCE -fno-strict-aliasing -Wall -std=c99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -MT librrd_th_la-rrd_update.lo -MD -MP -MF .deps/librrd_th_la-rrd_update.Tpo -c rrd_update.c -o librrd_th_la-rrd_update.o >/dev/null 2>&1
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