Zabbix proxy crashing after start on armv7l (QNAP ts-128)

[sanderd80]

Hi,

After some hassle I managed to compile zabbix_proxy 4.0 on my QNAP TS-128 (armv7l) using entware. Just after starting the proxy makes connection to the server, gets it's configuration data and then crashes. Attached the zabbix_proxy.log. Anyone any ideas on why this is happening?

Thanks,

Sander

[vso]

Please increase log level and attach log again, it looks like poller is crashing, but it would be nice to know what it was doing.

[sanderd80]

thanks for the response, please find the level 5 logs attached

[vso]

It is crashing when getting snmp values:

 21161:20190317:175037.574 zbx_snmp_get_values() snmp_synch_response() status:0 s_snmp_errno:0 errstat:0 mapping_num:1
 21161:20190317:175037.574 Got signal [signal:11(SIGSEGV),reason:1,refaddr:0xf]. Crashing ...

I can only suggest adding additional debug information as a patch to investigate issue further, which version of net-SNMP is used ?

[sanderd80]

Just to confirm, I compiled the zabbix_proxy without net-snmp and it works.

I do have to admin that I had to "steal" a version of net-snmp-config (as this is not provided/available with the Entware packages) from another (arm) system, looking at the configure script I see that the following cflags are returned. Maybe this has something to do with it?

[/share/homes/admin/zabbix-4.0.5] # net-snmp-config --cflags
-DNETSNMP_ENABLE_IPV6 -fno-strict-aliasing -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -DNETSNMP_USE_INLINE -Ulinux -Dlinux=linux -D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fwrapv -fno-strict-aliasing -pipe -I/opt/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2 -I. -I/opt/include

reducing this to the minimal gives the same crash and same crash message:

[/opt/zabbix/var/log] # net-snmp-config --cflags
-I/opt/include -I. -I/opt/include
[/opt/zabbix/var/log] #

The version of net-snmp used is:

[/share/homes/admin/zabbix-4.0.5] # opkg list-installed | grep snmp
libnetsnmp - 5.8-1
snmp-mibs - 5.8-1
[/share/homes/admin/zabbix-4.0.5] #

If you want me to compile with an additional patch for debugging, please let me know

Thanks!