net-snmp crash

[Eugene Grosbein]

19.11.2019 4:22, Michael W. Lucas wrote:
> Hi,
> 
> I can reliably crash net-snmp with an snmpset. Worth a formal bug
> report?
> 
> $ uname -a
> FreeBSD freebsdtest 12.0-RELEASE-p10 FreeBSD 12.0-RELEASE-p10 GENERIC  amd64
> 
> $ pkg info net-snmp
> net-snmp-5.7.3_20,1
> Name           : net-snmp
> Version        : 5.7.3_20,1
> Installed on   : Wed Oct  9 15:22:24 2019 EDT
> ...
> 
> Detail:
> 
> $ sysctl net.inet.ip.forwarding
> net.inet.ip.forwarding: 0
> 
> $ snmpget freebsd IP-MIB::ipForwarding.0
> IP-MIB::ipForwarding.0 = INTEGER: notForwarding(2)
> 
> $ snmpset freebsd IP-MIB::ipForwarding.0 i 1
> Timeout: No Response from freebsd
> 
> Yep, the agent is dead:
> 
> $ pgrep snmpd
> $
> 
> The sysctl change took place, however:
> 
> $ sysctl net.inet.ip.forwarding
> net.inet.ip.forwarding: 1
> 
> I can restart the agent and reverse the change, but snmpd crashes
> again.
> 
> So: worth a bug report, or no?

Yes, and this should be easy to debug and fix provided net-snmpd port built WITH_DEBUG=yes to include debugging symbols
and coredumps enabled.


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