Re: linux-next: Tree for Apr 9 [cpufreq: NULL pointer deref]

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On Wed, Apr 10, 2013 at 7:53 AM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
> On Wed, Apr 10, 2013 at 7:41 AM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
>> On Tue, Apr 9, 2013 at 6:51 PM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
>>> On 9 April 2013 21:38, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
>>>> With x=3 the system gets in an unuseable state.
>>>>
>>>>      root# echo 0 > /sys/devices/system/cpu/cpu3/online
>>>>
>>>> I could not write my reply and had to do a hard/cold reboot.
>>>> The dmesg log I saw looked similiar to my digicam-shot.
>>>
>>> Few things i need from you. First is output of cpufreq-info. Then
>>> all the steps you did to reproduce above? Removed any other cpus?
>>>
>>
>> Here is the output of cpufreq-info of the stable distro-kernel I am using.
>> If you need the one from the "BROKEN" kernel, please let me know.
>>
>> - Sedat -
>
> Hmm, I see that the kernel-sources itself ships a...
>
> ./tools/power/cpupower/utils/cpufreq-info.c
>
> IIRC current 'make deb-pkg' does not build the tools, but I have seen
> a patch on linux-kbuild ML.

I found this "[RFC PATCH] kbuild: Build linux-tools package with 'make
deb-pkg'" from February 2012.
Can't say what happened to it...

- Sedat -

[1] http://lists.debian.org/debian-kernel/2012/02/msg01009.html

> Can I build cpufreq-info.c afterwards? Do I need a already-compiled build-dir?
>
> Thanks in advance for answering my questions.
>
> BTW, I have found a nice article on LWN "cpupowerutils - cpufrequtils
> extended with quite some features" (see [1]).
>
> - Sedat -
>
> [1] http://lwn.net/Articles/433002/
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