Jarek Poplawski wrote:
On Fri, Dec 22, 2006 at 06:05:18AM -0800, Ben Greear wrote:
Jarek Poplawski wrote:
On Fri, Dec 22, 2006 at 08:13:08AM +0100, Jarek Poplawski wrote:
On 20-12-2006 03:13, Ben Greear wrote:
This is from 2.6.18.2 kernel with my patch set. The MAC-VLANs are in
active use.
From the backtrace, I am thinking this might be a generic problem,
however.
Any ideas about what this could be? It seems to be reproducible every
day or
...
If it doesn't help, I hope lockdep will be more
precise when you'll upgrade to 2.6.19 or higher.
... or when you enable lockdep in 2.6.18 (I've
forgotten it's there alredy!).
I got lucky..the system was available by ssh still. I see this in the boot
logs..I assume
this means lockdep is enabled? Should I have expected to see a lockdep
trace in the case of
his soft-lockup then?
.....
Dec 19 04:33:48 localhost kernel: Lock dependency validator: Copyright (c)
2006 Red Hat, Inc., Ingo MolnarDec 19 04:33:48 localhost kernel: ...
MAX_LOCKDEP_SUBCLASSES: 8
Yes, you got it enabled in the config.
If there is no message later about validator
turning off and no warnings which could point
at lockdep then it is working.
But then, IMHO, there is rather small probability
this bug is really from lockup. Another possibility
is hardware irqs (timer in particular) are turned
off by something (maybe those hacks?) for extremely
long time (~10 sec.).
The system hangs and does not recover (well, a few processes
continue on the other processor for a few minutes before they
too deadlock...)
I am guessing this problem has been around for a while, but it
is only triggered when interfaces are created, and probably only
when UDP traffic is already running heavily on the system. Most
systems w/out virtual devices will not trigger this sort of
race.
Ben
Regards,
Jarek P.
--
Ben Greear <[EMAIL PROTECTED]>
Candela Technologies Inc http://www.candelatech.com
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