Re: [STABLE][PATCH 4.4] thermal/core/fair share: Lock the thermal zone while looping over instances

[Lukasz Luba <lukasz.luba@arm.com>]

On 5/14/21 11:56 AM, Greg KH wrote:
> On Fri, May 14, 2021 at 11:49:16AM +0100, Lukasz Luba wrote:
>> commit fef05776eb02238dcad8d5514e666a42572c3f32 upstream.
>>
>> The tz->lock must be hold during the looping over the instances in that
>> thermal zone. This lock was missing in the governor code since the
>> beginning, so it's hard to point into a particular commit.
>>
>> CC: stable@vger.kernel.org # 4.4
>> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
>> ---
>> Hi all,
>>
>> I've backported my patch which was sent to LKML:
>> https://lore.kernel.org/linux-pm/20210422153624.6074-2-lukasz.luba@arm.com/
>>
>> The upstream patch failed while applying:
>> https://lore.kernel.org/stable/16206371483193@kroah.com/
>>
>> This patch should apply to stable v4.4.y, on top of stable tree branch:
>> linux-4.4.y which head was at:
>> commit 47127fcd287c ("Linux 4.4.268")
> 
> What about 4.9, 4.14, 4.14, and 5.4 releases?  They need this fix as
> well, right?

s/4.14/4.19

Yes, I'm going to send them in next few hours after building and
testing.

Regards,
Lukasz