Messages in this thread | | | Date | Tue, 20 Mar 2007 13:06:34 +0300 | From | Alexey Dobriyan <> | Subject | Re: Oops after cd /sys/.../cpufreq/; rmmod; cat stats/time_in_state |
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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?
/sys/devices/system/cpu/cpu0/cpufreq $ ls -lR .: total 0 drwxr-xr-x 2 root root 0 2007-03-20 12:59 stats
./stats: total 0 -r--r--r-- 1 root root 4096 2007-03-20 12:59 time_in_state -r--r--r-- 1 root root 4096 2007-03-20 12:59 total_trans
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