Hello, I am experiencing an occasional kernel crash, or hang (endless loop of some sort), when replacing the settings for some qdiscs on the fly. I am not seeing any "aie" or "oops" in /var/messages/log -- does this mean this is not a crash but indeed a hang? This is in the context of network simulation. I am using the following all in conjunction: VLANs, ifb devices, mirroring rules to get inbound traffic sent to the ifb devices, some filters (obviously), and the netem & tbf qdiscs. I have not been able to pinpoint the problem down to a perticular element in that combination, although the tbf and ifb + mirroring seem to be involved in any problematic case. I'm running on a pretty old kernel, fedora core 8: 2.6.23.1-42.fc8. Yes, it's really old. FWIW, this machine only runs on an internal network. ===> Before just upgrading to a more recent kernel, I would like to know if there were known issues, somewhere around that kernel version number, about kernel crash/hangs caused triggered from setting certain combinations of qdiscs. Most likely I would expect this to be somewhere under net/sched. Also, this may not be a linux-net specific question, but how do I determine what would be a safe kernel version to upgrade to without breaking any of the protocols from userspace to kernel space? (ex: ip, tc, etc...) Thanks in advance for any info. -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
