Hello,
I've been testing a debian package for cfengine 2.2.2 for our production
cluster. cfagent triggers a segmentation fault on every execution. So what
I've decided to do is compile cfagent with the same configure flags the
debian package would use and see if I can get some useful information from
GDB. Here are the results. Any assistance would be appreciated.
Environment:
Debian Linux 3.1 Sarge (oldstable)
# ldd src/cfagent
libdb-4.2.so => /usr/lib/libdb-4.2.so (0xb7e9c000)
libcrypto.so.0.9.7 => /usr/lib/i686/cmov/libcrypto.so.0.9.7
(0xb7d9c000)
libnss_nis.so.2 => /lib/tls/libnss_nis.so.2 (0xb7d93000)
libpthread.so.0 => /lib/tls/libpthread.so.0 (0xb7d84000)
librt.so.1 => /lib/tls/librt.so.1 (0xb7d7e000)
libm.so.6 => /lib/tls/libm.so.6 (0xb7d5c000)
libc.so.6 => /lib/tls/libc.so.6 (0xb7c27000)
libdl.so.2 => /lib/tls/libdl.so.2 (0xb7c23000)
libnsl.so.1 => /lib/tls/libnsl.so.1 (0xb7c0f000)
libnss_files.so.2 => /lib/tls/libnss_files.so.2 (0xb7c05000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0xb7f7c000)
compile options:
./configure --prefix=/usr --sysconfdir=/etc --mandir=${prefix}/share/man
--infodir=${prefix}/share/info --with-berkeleydb=/usr --with-openssl=/usr
--with-workdir=/var/lib/cfengine2
=======================================================================
hostname:/usr/src/cfengine-2.2.2# gdb src/cfagent
GNU gdb 6.3-debian
Copyright 2004 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-linux"...Using host libthread_db library
"/lib/tls/libthread_db.so.1".
(gdb) run -K -I -q -f /etc/cfengine/cfagent.conf
Starting program: /usr/src/cfengine-2.2.2/src/cfagent -K -I -q -f
/etc/cfengine/cfagent.conf
Failed to read a valid object file image from memory.
[Thread debugging using libthread_db enabled]
[New Thread -1211697952 (LWP 1136)]
cfengine:hostname: Old link /etc/rc2.d/S23ntp-server points somewhere else.
Doing nothing!
cfengine:hostname: (Link points to ../init.d/ntp-server not
/etc/init.d/ntp-server)
cfengine:hostname:
Executing script /home/opstools/bin/user-account-handler --remove-user
XXAUSER...(timeout=0,uid=-1,gid=-1)
cfengine:hostname: Finished script /home/opstools/bin/user-account-handler
--remove-user XXAUSERXX
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1211697952 (LWP 1136)]
0xb7d048d4 in mallopt () from /lib/tls/libc.so.6
(gdb) back
#0 0xb7d048d4 in mallopt () from /lib/tls/libc.so.6
#1 0xb7d03c43 in malloc () from /lib/tls/libc.so.6
#2 0xb7fbd148 in __os_malloc_4002 () from /usr/lib/libdb-4.2.so
#3 0xb7f42098 in __ham_db_create_4002 () from /usr/lib/libdb-4.2.so
#4 0xb7f8c698 in db_create_4002 () from /usr/lib/libdb-4.2.so
#5 0xb7f8c242 in db_create_4002 () from /usr/lib/libdb-4.2.so
#6 0x0805fa89 in RecordPerformance (
eventname=0xbfafa740 "Exec(/home/opstools/bin/user-account-handler
--remove-user XXAUSERXX)", t=1193106068, value=0.0041603669999999999) at
instrument.c:59
#7 0x08052dec in Scripts () at do.c:1489
#8 0x0804d9ea in DoTree (passes=3, info=0x80b40c6 "Main Tree")
at cfagent.c:1255
#9 0x0804b3a7 in main (argc=24, argv=0x18) at cfagent.c:240
(gdb)
=======================================================================
Note that I've also tried with libdb-4.3 and got different results:
=======================================================================
hostname:/usr/src/cfengine-2.2.2# gdb src/cfagent
GNU gdb 6.3-debian
Copyright 2004 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-linux"...Using host libthread_db library
"/lib/libthread_db.so.1".
(gdb) run -K -I -f ./cfagent.conf
Starting program: /usr/src/cfengine-2.2.2/src/cfagent -K -I -f
./cfagent.conf
[Thread debugging using libthread_db enabled]
[New Thread 47576083881344 (LWP 16877)]
cfengine:hostname: Owner of /root/installables was 1016, setting to 0
cfengine:hostname: Group of /root/installables was 1016, setting to 0
cfengine:hostname: Owner of /root/installables was 0, setting to 1016
cfengine:hostname: Group of /root/installables was 0, setting to 1016
cfengine:hostname: Old link /etc/rc2.d/S23ntp-server points somewhere else.
Doing nothing!
cfengine:hostname: (Link points to ../init.d/ntp-server not
/etc/init.d/ntp-server)
cfengine:hostname:
Executing script /home/opstools/bin/user-account-handler --remove-user
XXAUSERXX...(timeout=0,uid=-1,gid=-1)
cfengine:hostname: Finished script /home/opstools/bin/user-account-handler
--remove-user XXAUSERXX
cfengine:hostname:
Executing script /home/opstools/bin/user-account-handler --add-user
XXANOTHERUSERXX 'Real Name' --password
'XXXXXXXXXXXXXXXXXXXXXXXXXX'...(timeout=0,uid=-1,gid=-1)
cfengine:hostname: Finished script /home/opstools/bin/user-account-handler
--add-user XXANOTHERUSERXX 'Real Name' --password
'XXXXXXXXXXXXXXXXXXXXXXXXXX'
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 47576083881344 (LWP 16877)]
0x00002b452b459d6b in mallopt () from /lib/libc.so.6
(gdb) back
#0 0x00002b452b459d6b in mallopt () from /lib/libc.so.6
#1 0x00002b452b458ff7 in malloc () from /lib/libc.so.6
#2 0x00002b452b45f982 in strdup () from /lib/libc.so.6
#3 0x00002b452b4b3fd9 in get_avphys_pages () from /lib/libc.so.6
#4 0x00002b452b4b3dac in get_nprocs_conf () from /lib/libc.so.6
#5 0x00002b452b48edef in sysconf () from /lib/libc.so.6
#6 0x00002b452b48ea11 in sysconf () from /lib/libc.so.6
#7 0x00002b452abc542e in __os_sleep () from /usr/lib/libdb-4.3.so
#8 0x00002b452abc546d in __os_spin () from /usr/lib/libdb-4.3.so
#9 0x00002b452aba0bd9 in db_env_create () from /usr/lib/libdb-4.3.so
#10 0x00002b452aba091a in db_env_create () from /usr/lib/libdb-4.3.so
#11 0x00002b452ab91cf4 in db_create () from /usr/lib/libdb-4.3.so
#12 0x00000000004153d2 in RecordPerformance (
eventname=0x7fff800aabd0 "Exec(/home/opstools/bin/user-account-handler
--add-user XXANOTHERUSERXX 'Real Name' --password
'XXXXXXXXXXXXXXXXXXXXXXXXXX')", t=1193164658, value=0.0046309999999999997)
at instrument.c:59
#13 0x000000000040add6 in Scripts () at do.c:1489
#14 0x000000000040679d in DoTree (passes=3, info=0x45e502 "Main Tree")
at cfagent.c:1255
#15 0x00000000004046b3 in main (argc=5, argv=0x7fff800acd38) at
cfagent.c:240
=======================================================================
Any ideas?
-- Luc,
IMVU Operations Staff
--
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