HI, We have a number of production systems running partly as a large router, using a few variants of centos5[32bit] with IMQ (using the clearos kernel). These systems are generally loaded with a large number of clients 500-2000+) and provide bandwidth management in both directions via IMQ (or in one case ifb) devices. Most clients have individual htb leaf classes, so there are a lot of htb classes. The problem is that we have a few of these systems that kernel panic in exactly the same way: I only have photographs of the console, but all the kernel panics (with different stack traces) end up at: __qdisc_run+0x1f8/0x1d0 SS:ESP 0068:c0754fb8 <0Kernel panic - not syncing: Fatal exception in interrupt This has happenned on the original Clearos kernel (2.6.18-6), then 2.6.18-308 on both the standard Centos 5.8 kernel with ifb, or the centosplus kernel. I can provide if anyone is interested the photographs of the console showing the details of the kernel panic. We have been unable to duplicate the problem in house, even with an emulator bomabrding the test system with tc rule changes and traffic. Searches have provided some hints, especially that this seems related to htb, but they also seem to indicate that a very similar problem others have encountered is resolved in 2.6.18-164-11, which does not seem to be our case, since we crashed with a standard 2.6.18-308 from the centos repo. Does anyone have any idea as to what this may be, or how we can go about determining more precisely what's going oon? Thanks a lot, Mike -- Mike SCHMIDT CTO Intello Technologies Inc. mike.schmidt@xxxxxxxxxxx Canada: 1-888-404-6261 x320 USA: 1-888-404-6268 x320 Mobile: 514-409-6898 www.intello.com -- To unsubscribe from this list: send the line "unsubscribe lartc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
