linux-kernel - Re: [PATCH v5 1/8] selftests/resctrl: Ensure the benchmark commands fits to its array

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Message-ID: <359da41a-813a-1fac-bfa2-8c0044c042cf@intel.com>
Date:   Tue, 5 Sep 2023 09:41:23 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        <linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        Maciej Wieczór-Retman 
        <maciej.wieczor-retman@...el.com>
CC:     Shaopeng Tan <tan.shaopeng@...fujitsu.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Babu Moger <babu.moger@....com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 1/8] selftests/resctrl: Ensure the benchmark commands
 fits to its array

Hi Ilpo,

On 9/4/2023 2:53 AM, Ilpo Järvinen wrote:
> Benchmark command is copied into an array in the stack. The array is
> BENCHMARK_ARGS items long but the command line could try to provide a
> longer command. Argument size is also fixed by BENCHMARK_ARG_SIZE (63
> bytes of space after fitting the terminating \0 character) and user
> could have inputted argument longer than that.
> 
> Return error in case the benchmark command does not fit to the space
> allocated for it.
> 
> Fixes: ecdbb911f22d ("selftests/resctrl: Add MBM test")
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> Tested-by: Shaopeng Tan <tan.shaopeng@...fujitsu.com>
> Reviewed-by: Shaopeng Tan <tan.shaopeng@...fujitsu.com>
> Reviewed-by: "Wieczor-Retman, Maciej" <maciej.wieczor-retman@...el.com>

Thank you.

Reviewed-by: Reinette Chatre <reinette.chatre@...el.com>

Reinette