linux-kernel - Re: [PATCH v7 02/24] x86/resctrl: kfree() rmid_ptrs from rdtgroup

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Message-ID: <539bf63b-6d10-96cf-8a4b-7569474b2ae7@arm.com>
Date:   Wed, 13 Dec 2023 18:03:14 +0000
From:   James Morse <james.morse@....com>
To:     babu.moger@....com, x86@...nel.org, linux-kernel@...r.kernel.org
Cc:     Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        shameerali.kolothum.thodi@...wei.com,
        D Scott Phillips OS <scott@...amperecomputing.com>,
        carl@...amperecomputing.com, lcherian@...vell.com,
        bobo.shaobowang@...wei.com, tan.shaopeng@...itsu.com,
        baolin.wang@...ux.alibaba.com, Jamie Iles <quic_jiles@...cinc.com>,
        Xin Hao <xhao@...ux.alibaba.com>, peternewman@...gle.com,
        dfustini@...libre.com, amitsinght@...vell.com
Subject: Re: [PATCH v7 02/24] x86/resctrl: kfree() rmid_ptrs from
 rdtgroup_exit()

Hi Babu,

On 09/11/2023 20:28, Moger, Babu wrote:
> On 10/25/23 13:03, James Morse wrote:
>> rmid_ptrs[] is allocated from dom_data_init() but never free()d.
>>
>> While the exit text ends up in the linker script's DISCARD section,
>> the direction of travel is for resctrl to be/have loadable modules.
>>
>> Add resctrl_exit_mon_l3_config() to cleanup any memory allocated
>> by rdt_get_mon_l3_config().
>>
>> There is no reason to backport this to a stable kernel.
>>
>> Signed-off-by: James Morse <james.morse@....com>

> Reviewed-by: Babu Moger <babu.moger@....com>

Thanks!

James