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Created attachment 902780[details]
yum update log
Description of problem:
Segmentation fault when starting libvirt snmp agent daemon after executing "yum update"
Version-Release number of selected component (if applicable):
libvirt-snmp-0.0.2-4.el6.x86_64
libvirt-0.10.2-37.el6.x86_64
net-snmp-libs-5.5-49.el6_5.1.x86_64
net-snmp-5.5-49.el6_5.1.x86_64
libvirt-snmp-0.0.2-4.el6.x86_64
libvirt-snmp-debuginfo-0.0.2-4.el6.x86_64
net-snmp-utils-5.5-49.el6_5.1.x86_64
Steps to Reproduce:
1. yum install net-snmp net-snmp-libs net-snmp-utils libvirt-snmp libvirt-snmp-debuginfo
2.[root@rhel6 net-snmp]# cat /etc/snmp/snmpd.conf
rwcommunity public
master agentx
trapcommunity public
trap2sink localhost
3.[root@rhel6 net-snmp]# cat /etc/snmp/snmptrapd.conf
# Example configuration file for snmptrapd
#
# No traps are handled by default, you must edit this file!
#
# authCommunity log,execute,net public
# traphandle SNMPv2-MIB::coldStart /usr/bin/bin/my_great_script cold
authCommunity log,execute,net public
logOption f /var/log/snmptraps.log
4.Upgrade all packages using "yum update"(This is key step!)
5.[root@rhel6 net-snmp]# service snmpd restart
Stopping snmpd: [ OK ]
Starting snmpd: [ OK ]
[root@rhel6 net-snmp]# service snmptrapd restart
Stopping snmptrapd: [ OK ]
Starting snmptrapd: [ OK ]
6.[root@rhel6 net-snmp]# LIBVIRT_DEFAULT_URI="qemu:///system" libvirtMib_subagent -f -L
Segmentation fault (core dumped)
Actual results:
As shown above steps, libvirt snmp daemon core dumped.
(gdb) info threads
* 1 Thread 0x7fa6f391f800 (LWP 8142) __libc_free (mem=0x71) at malloc.c:3714
(gdb) bt
#0 __libc_free (mem=0x71) at malloc.c:3714
#1 0x00000033368598e9 in virFree (ptrptr=0x1dc2058) at util/memory.c:419
#2 0x000000333687144b in virResetError (err=0x1dc2030) at util/virterror.c:324
#3 0x0000003336850ce2 in virEventRegisterDefaultImpl () at util/event.c:206
#4 0x0000000000406125 in libvirtSnmpInit () at libvirtSnmp.c:324
#5 0x0000000000405584 in libvirtGuestTable_container_init (container_ptr_ptr=0x610060, cache=0x1dca8c0) at libvirtGuestTable_data_access.c:138
#6 0x0000000000409c7b in _libvirtGuestTable_container_init (reg_ptr=0x1dca3f0, flags=<value optimized out>) at libvirtGuestTable_interface.c:1644
#7 _libvirtGuestTable_initialize_interface (reg_ptr=0x1dca3f0, flags=<value optimized out>) at libvirtGuestTable_interface.c:202
#8 0x0000000000406ec8 in main (argc=3, argv=<value optimized out>) at libvirtMib_subagent.c:158
(gdb)
[root@amd-5200-4-2 ~]# cat /var/log/messages
Jun 6 14:37:42 amd-5200-4-2 kernel: libvirtMib_suba[4600]: segfault at 69 ip 00007f202d11382c sp 00007fff9d69f278 error 4 in libc-2.12.so[7f202d098000+18b000]
Jun 6 14:37:43 amd-5200-4-2 abrtd: Directory 'ccpp-2014-06-06-14:37:42-4600' creation detected
Jun 6 14:37:43 amd-5200-4-2 abrt[4602]: Saved core dump of pid 4600 (/usr/bin/libvirtMib_subagent) to /var/spool/abrt/ccpp-2014-06-06-14:37:42-4600 (2179072 bytes)
Expected results:
The libvirt snmp daemon should be started successfully.
Comment 3Jaroslav Suchanek
2015-11-26 14:28:39 UTC
Please retest it with current release and reopen this bug if the crash is still reproducible. Thanks.
Created attachment 902780 [details] yum update log Description of problem: Segmentation fault when starting libvirt snmp agent daemon after executing "yum update" Version-Release number of selected component (if applicable): libvirt-snmp-0.0.2-4.el6.x86_64 libvirt-0.10.2-37.el6.x86_64 net-snmp-libs-5.5-49.el6_5.1.x86_64 net-snmp-5.5-49.el6_5.1.x86_64 libvirt-snmp-0.0.2-4.el6.x86_64 libvirt-snmp-debuginfo-0.0.2-4.el6.x86_64 net-snmp-utils-5.5-49.el6_5.1.x86_64 Steps to Reproduce: 1. yum install net-snmp net-snmp-libs net-snmp-utils libvirt-snmp libvirt-snmp-debuginfo 2.[root@rhel6 net-snmp]# cat /etc/snmp/snmpd.conf rwcommunity public master agentx trapcommunity public trap2sink localhost 3.[root@rhel6 net-snmp]# cat /etc/snmp/snmptrapd.conf # Example configuration file for snmptrapd # # No traps are handled by default, you must edit this file! # # authCommunity log,execute,net public # traphandle SNMPv2-MIB::coldStart /usr/bin/bin/my_great_script cold authCommunity log,execute,net public logOption f /var/log/snmptraps.log 4.Upgrade all packages using "yum update"(This is key step!) 5.[root@rhel6 net-snmp]# service snmpd restart Stopping snmpd: [ OK ] Starting snmpd: [ OK ] [root@rhel6 net-snmp]# service snmptrapd restart Stopping snmptrapd: [ OK ] Starting snmptrapd: [ OK ] 6.[root@rhel6 net-snmp]# LIBVIRT_DEFAULT_URI="qemu:///system" libvirtMib_subagent -f -L Segmentation fault (core dumped) Actual results: As shown above steps, libvirt snmp daemon core dumped. (gdb) info threads * 1 Thread 0x7fa6f391f800 (LWP 8142) __libc_free (mem=0x71) at malloc.c:3714 (gdb) bt #0 __libc_free (mem=0x71) at malloc.c:3714 #1 0x00000033368598e9 in virFree (ptrptr=0x1dc2058) at util/memory.c:419 #2 0x000000333687144b in virResetError (err=0x1dc2030) at util/virterror.c:324 #3 0x0000003336850ce2 in virEventRegisterDefaultImpl () at util/event.c:206 #4 0x0000000000406125 in libvirtSnmpInit () at libvirtSnmp.c:324 #5 0x0000000000405584 in libvirtGuestTable_container_init (container_ptr_ptr=0x610060, cache=0x1dca8c0) at libvirtGuestTable_data_access.c:138 #6 0x0000000000409c7b in _libvirtGuestTable_container_init (reg_ptr=0x1dca3f0, flags=<value optimized out>) at libvirtGuestTable_interface.c:1644 #7 _libvirtGuestTable_initialize_interface (reg_ptr=0x1dca3f0, flags=<value optimized out>) at libvirtGuestTable_interface.c:202 #8 0x0000000000406ec8 in main (argc=3, argv=<value optimized out>) at libvirtMib_subagent.c:158 (gdb) [root@amd-5200-4-2 ~]# cat /var/log/messages Jun 6 14:37:42 amd-5200-4-2 kernel: libvirtMib_suba[4600]: segfault at 69 ip 00007f202d11382c sp 00007fff9d69f278 error 4 in libc-2.12.so[7f202d098000+18b000] Jun 6 14:37:43 amd-5200-4-2 abrtd: Directory 'ccpp-2014-06-06-14:37:42-4600' creation detected Jun 6 14:37:43 amd-5200-4-2 abrt[4602]: Saved core dump of pid 4600 (/usr/bin/libvirtMib_subagent) to /var/spool/abrt/ccpp-2014-06-06-14:37:42-4600 (2179072 bytes) Expected results: The libvirt snmp daemon should be started successfully.