I've not been able to reproduce it since, but I know others (BCC'ed
on
this note) have seen it and might prod them to come forth with
details
(and broken .config files)
In my case, disabling CPU_FREQ_PMAC made the failure go away.
After reverting this patch, CPU_FREQ_PMAC is once again operating
successfully, so far.
Hrm.. which cpufreq method is used on both your machines ? If it's the
one involving the PMU, it does involve a full hard reset of the
processor (with appropriate cache flushes etc...), maybe something's
going wrong in that area....
It's most likely a red herring, lots of config changes
make the bug go away on some kernel versions (but not
on others); the problem is very sensitive to changes in
memory layout.
Segher
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