On Tue, Mar 03, 2009 at 08:03:52PM +0000, Sitsofe Wheeler wrote:
> The machine where this fault happened is a single core non-symmetric
> multithreading EeePC 900 with a Celeron M 900 using a voluntary preempt
> kernel (so I doubt this is due to tasklets being run on another CPU)...

This particular one could still happen on UP, provided interrupts were
enabled in ath5k_rx_start (I don't think that's very likely, though.  
I tried warning on that case and didn't hit it).

> I am a bit unsure which patches you want me to be testing though...

None.  Perhaps it's wishful thinking but a function trace for the few
minutes prior to the poison would be useful.  A good replicator might
be to run a sequence of automatic suspend/resume with pm_test, in 
parallel with iwlist wlan0 scan (as root, so scans are actually 
performed), in parallel with iperf or ping.  I didn't personally have
luck with that workload, though.

-- 
Bob Copeland %% www.bobcopeland.com

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