linux-kernel - Re: [PATCH] thermal/drivers/cpuidle

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Message-ID: <dcbf21e2-e2da-7e0d-66bb-ae7f4dc28858@linaro.org>
Date:   Mon, 22 Mar 2021 09:08:36 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        Amit Daniel Kachhap <amit.kachhap@...il.com>,
        Javi Merino <javi.merino@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Amit Kucheria <amitk@...nel.org>,
        "open list:THERMAL/CPU_COOLING" <linux-pm@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] thermal/drivers/cpuidle_cooling: Fix use after error

On 22/03/2021 04:29, Viresh Kumar wrote:
> On 19-03-21, 21:25, Daniel Lezcano wrote:
>> When the function successfully finishes it logs an information about
>> the registration of the cooling device and use its name to build the
>> message. Unfortunately it was freed right before:
>>
>> drivers/thermal/cpuidle_cooling.c:218 __cpuidle_cooling_register()
>> 	warn: 'name' was already freed.
>>
>> Fix this by freeing after the message happened.
>>
>> Fixes: 6fd1b186d900 ("thermal/drivers/cpuidle_cooling: Use device name instead of auto-numbering")
> 
> Why not merge this with the Fixes patch itself since it isn't there in Linus's
> tree yet ?
> 
> Or is your branch strictly immutable ?

Hi Viresh;

The changes follow the path:

testing -> linux-next -> next

The branch next is never rebased. The patch above reached it. This is
notified by the thermal-bot [1].

  -- Daniel

[1]
https://lore.kernel.org/linux-pm/20210314111333.16551-3-daniel.lezcano@linaro.org/T/#ma257519efc70ee60faca47dbd458b05de5449bf8


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