On Tue, Mar 20, 2007 at 01:06:34PM +0300, Alexey Dobriyan wrote:
> On Mon, Mar 19, 2007 at 01:41:25PM -0700, Greg KH wrote:
> > On Mon, Mar 19, 2007 at 06:30:13PM +0300, Alexey Dobriyan wrote:
> > > Steps to reproduce:
> > >
> > >   # modprobe p4-clockmod
> > >   $ cd /sys/devices/system/cpu/cpu0/cpufreq/
> > >   # rmmod p4-clockmod
> > >   $ cat stats/time_in_state
> > >   Segmentation fault
> >
> > Has this always happened?  Or is it new?
> 
> I've checked 2.6.17 and up and it happens too.
> 
> Some .config peculiarities:
> 
>       CONFIG_CPU_FREQ=y
>       CONFIG_CPU_FREQ_STAT=y
>       CONFIG_X86_P4_CLOCKMOD=m
> 
> After modprobe/rmmod cpufreq/stats directory appears but doesn't get
> removed. Should it?

Yes.

Well, one can argue that those stats should never be in sysfs at all
anyway, I mean come on, a histogram in sysfs?  That's, not ok.

thanks,

greg k-h
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