linux-kernel - Re: [PATCH v3] cpufreq: cppc: Set fie_disabled to FIE_DISABLED if fails to create kworker

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Message-ID: <7fca5d2d-ad02-08b4-01d0-e9d997a7a58d@huawei.com>
Date:   Thu, 17 Aug 2023 18:44:44 +0800
From:   "Liao, Chang" <liaochang1@...wei.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
CC:     <rafael@...nel.org>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] cpufreq: cppc: Set fie_disabled to FIE_DISABLED if
 fails to create kworker_fie

Hi Viresh,

在 2023/8/17 16:56, Viresh Kumar 写道:
> On 17-08-23, 07:47, Liao Chang wrote:
>> The function cppc_freq_invariance_init() may failed to create
>> kworker_fie, make it more robust by setting fie_disabled to FIE_DISBALED
>> to prevent an invalid pointer dereference in kthread_destroy_worker(),
>> which called from cppc_freq_invariance_exit().
> 
> Btw, this version information present below should be added ... (see later)
> 
>> v3:
>> Simplify cleanup code when invariance initialization fails.
>>
>> v2:
>> Set fie_disabled to FIE_DISABLED when invariance initialization fails.
>>
>> Link: https://lore.kernel.org/all/20230816034630.a4hvsj373q6aslk3@vireshk-i7/
>>
>> Signed-off-by: Liao Chang <liaochang1@...wei.com>
>> ---
> 
> ... here after the "---" line, this way this not-so-useful information will not
> be committed while applying the patch.

Got it, I will move the "v2:... v3:..." lines below the "---" line in next patch.

Thanks.

> 
>>  drivers/cpufreq/cppc_cpufreq.c | 9 ++++++---
>>  1 file changed, 6 insertions(+), 3 deletions(-)

-- 
BR
Liao, Chang