Messages in this thread | ![/](/images/icornerl.gif) | | From | Alistair John Strachan <> | Subject | Re: Realtime Preemption, 2.6.12, Beginners Guide? | Date | Fri, 8 Jul 2005 21:45:08 +0100 |
| |
On Friday 08 Jul 2005 20:48, Ingo Molnar wrote: > * Alistair John Strachan <s0348365@sms.ed.ac.uk> wrote: > > Unfortunately I see nothing like this when the machine crashes. Find > > attached my config, which has CONFIG_4KSTACKS and the options you > > specified. Are you sure this is sufficient to enable it? > > i have booted your .config, and stack overflow debugging is active and > working. So it probably wasnt a straight (detectable) stack recursion / > stack footprint issue. >
Okay, I disabled IO-APIC and Local APIC, recompiled with (an otherwise identical) config.
Got this (slightly better) oops. Figured out how to use my camera :-)
http://devzero.co.uk/~alistair/oops6.jpeg
Onto your stack-footprint metric. I don't know what the number means, but at a guess it's the size of the stack. Unfortunately, if this is the case, it's unlikely to be an overflow causing the crash. Here's a grep of dmesg just before the crash.
[root] 21:39 [~] dmesg | grep new\ stack | new stack-footprint maximum: swapper/1, 1760 bytes. | new stack-footprint maximum: mount/471, 1716 bytes. | new stack-footprint maximum: cupsd/2623, 1564 bytes. | new stack-footprint maximum: kdm_greet/2845, 1528 bytes. | new stack-footprint maximum: krootimage/2846, 1204 bytes. | new stack-footprint maximum: konqueror/2938, 836 bytes.
The complete traces are a bit long to include here, but I've uploaded the entire dmesg:
http://devzero.co.uk/~alistair/dmesg.gz
-- Cheers, Alistair.
personal: alistair()devzero!co!uk university: s0348365()sms!ed!ac!uk student: CS/CSim Undergraduate contact: 1F2 55 South Clerk Street, Edinburgh. EH8 9PP. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| ![\](/images/icornerr.gif) |