Package: snmpd Version: 5.2.1.2-4 Severity: important
On Dell em64t systems running the amd64 port of Debian, interfaces statistics polled via snmp from remote hosts stop incrementing. I haven't tested on other hardware so can only speak to Dell hardware at the moment. But the bug shows up on every system running Debian's amd64 port. Systems running the i386 port with 64bit kernels DO NOT exhibit this problem. Originally, we were running the sarge version of snmpd (5.1.2-6.2) but this bug forced us to backport the etch version of snmpd to sarge. Unfortunately, the bug appears in the etch version as well. When initially run, snmpd works fine, interface statistics increment properly and remote polling works as expected. Then after a few days (perhaps from a counter wrap but not sure), the polled data stops incrementing. The polling still works but the data is not correct. For example, a snmpwalk might yield the following: $ snmpwalk -v 1 -c community remotehost ifDesc IF-MIB::ifDescr.1 = STRING: lo IF-MIB::ifDescr.2 = STRING: eth0 IF-MIB::ifDescr.3 = STRING: eth1 IF-MIB::ifDescr.4 = STRING: sit0 $ snmpwalk -v 1 -c community remotehost ifOutOctets IF-MIB::ifOutOctets.1 = Counter32: 16614789 IF-MIB::ifOutOctets.2 = Counter32: 16614789 IF-MIB::ifOutOctets.3 = Counter32: 16614789 IF-MIB::ifOutOctets.4 = Counter32: 0 Then an hour later: $ snmpwalk -v 1 -c community remotehost ifOutOctets IF-MIB::ifOutOctets.1 = Counter32: 16614789 IF-MIB::ifOutOctets.2 = Counter32: 16614789 IF-MIB::ifOutOctets.3 = Counter32: 16614789 IF-MIB::ifOutOctets.4 = Counter32: 0 With version 5.1.2, restarting snmpd does not fix the problem. On 5.2.1, restarting snmpd works (or seems to). On 5.2.1, the problem coincided with the following log entry: snmpd[27974]: looks like a 64bit wrap, but prev!=new which suggests a problem with the counter wrap code. All other snmp data polled seems to work fine. -- System Information: Debian Release: 3.1 Architecture: amd64 (x86_64) Kernel: Linux 2.6.8-11-em64t-p4 Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1) Versions of packages snmpd depends on: ii libc6 2.3.2.ds1-22 GNU C Library: Shared libraries an ii libsensors3 1:2.9.1-1sarge2 library to read temperature/voltag ii libsnmp9 5.2.1.2-4 NET SNMP (Simple Network Managemen ii libwrap0 7.6.dbs-8 Wietse Venema's TCP wrappers libra -- no debconf information -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
