Hi All,
I'm using linux (kernel 2.6.18) and have net-snmp 5.4.2.1 installed.
I've configured link up link down trap with adding the following lines to
snmpd.conf:
notificationEvent linkUpTrap linkUp ifIndex ifAdminStatus ifOperStatus
notificationEvent linkDownTrap linkDown ifIndex ifAdminStatus ifOperStatus
monitor -S -r 1 -e linkUpTrap "Generate linkUp" ifOperStatus != 2
monitor -S -r 1 -e linkDownTrap "Generate linkDown" ifOperStatus == 2
(agentSecName was defined too).
I noticed that when I'm "playing" with the interfaces, the snmpd is
crashing, generating a huge core.
I've mainley noticed that it happens when adding / editing / removing vlans.
The cores are all started with linkup linkdown trap, ended in different
ways:
1. #0 0x00efa1eb in strncmp () from /lib/libc.so.6
#1 0x0048c402 in _arch_interface_flags_v6_get (
container=<value optimized out>, load_flags=<value optimized out>)
at if-mib/data_access/interface_linux.c:280
#2 netsnmp_arch_interface_container_load (container=<value optimized out>,
load_flags=<value optimized out>)
at if-mib/data_access/interface_linux.c:693
Note that it is not happenning all the time - it is hard to reproduce but
still its crashing the deamon.
I'm guessing that maybe it's a race condition between the interfaces
modification and the traversal of the interfaces table prior the sending of
the trap.
Does anyone encountered this issue?
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