linux-kernel - Re: [PATCH v4 04/19] selftests/resctrl: Close perf value read fd on errors

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 17 Jul 2023 09:09:17 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
CC:     <linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        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 v4 04/19] selftests/resctrl: Close perf value read fd on
 errors

Hi Ilpo,

On 7/17/2023 6:05 AM, Ilpo Järvinen wrote:
> On Fri, 14 Jul 2023, Reinette Chatre wrote:
>> * add check in get_llc_perf() that it does not attempt ioctl()
>>   on "fd_lm == -1" (later addition would be error checking of
>>   the ioctl())
> 
> The other two things suggested seem unnecessary and I've not implemented 
> them, I don't thinkg fd_lm can be -1 at ioctl(). Given this code is going 
> to be replaced soonish, putting any extra "safety" effort into it now 
> seems waste of time.

Yes, this suggestion was indeed to make the code more robust. I
certainly do not want to waste your time. Please keep in mind 
when you respond that I do not have insight into the reworks
you are still planning. 

Reinette