Re: [PATCH v1 0/2] crash on reading cpufreq sysfs

[Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>]

On Thu, 2015-10-08 at 02:17 +0200, Rafael J. Wysocki wrote:
> On Thu, Oct 8, 2015 at 1:50 AM, Srinivas Pandruvada
> <srinivas.pandruvada@linux.intel.com> wrote:
> > On Thu, 2015-10-08 at 00:50 +0200, Rafael J. Wysocki wrote:
> > > On Wednesday, October 07, 2015 01:50:42 PM Srinivas Pandruvada
> > > wrote:
> > > > Fixes for crash on reading cpufreq sysfs for offline cpus
> > > > 
> > > > v1
> > > > Fix commit discription on Patch 1/2. Included Acks from Viresh.
> > > > It has both patches, even though only one patch has change.
> > > > 
> > > > v0
> > > > two patches: one for acp-cpufreq and one for cpufreq core
> > > > 
> > > > Srinivas Pandruvada (2):
> > > >   cpufreq: acpi_cpufreq: prevent crash on reading
> > > > freqdomain_cpus
> > > >   cpufreq: prevent lockup on reading
> > > > scaling_available_frequencies
> > > 
> > > Both applied, but they look like -stable material to me.
> > > 
> > I tested in 4.1 kernels, since on offline, cpufreq folder is not
> > available there is no issue.
> > For 4.2 kernels the I didn't see crash fixed by cpufreq core patch
> > (cat
> > scaling_available_frequencies), but the "cat freqdomain_cpus" still
> > causes crash. So we need to apply cpufreq:acpi-cpufreq patch only.
> > So
> > one patch is applicable for stable tree.
> 
> So [1/2] should go into 4.2.y and [2/2] fixes a regression introduced
> in this cycle, right?
Yes.

Thanks,
Srinivas
> 
> Thanks,
> Rafael