linux-kernel - Re: [PATCH v2 1/3] security: Create "kernel hardening" config area

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Date:   Fri, 19 Apr 2019 22:15:06 +0300
From:   Alexander Popov <alex.popov@...ux.com>
To:     Kees Cook <keescook@...omium.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Alexander Potapenko <glider@...gle.com>,
        James Morris <jmorris@...ei.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Kostya Serebryany <kcc@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Sandeep Patil <sspatil@...roid.com>,
        Laura Abbott <labbott@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Emese Revfy <re.emese@...il.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Kernel Hardening <kernel-hardening@...ts.openwall.com>,
        linux-security-module <linux-security-module@...r.kernel.org>,
        linux-kbuild <linux-kbuild@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] security: Create "kernel hardening" config area

On 16.04.2019 16:56, Kees Cook wrote:
> On Tue, Apr 16, 2019 at 8:55 AM Alexander Popov <alex.popov@...ux.com> wrote:
>>
>> On 16.04.2019 7:02, Kees Cook wrote:
>>> On Mon, Apr 15, 2019 at 11:44 AM Alexander Popov <alex.popov@...ux.com> wrote:
>>>>
>>>> What do you think about some separator between memory initialization options and
>>>> CONFIG_CRYPTO?
>>>
>>> This was true before too
>>
>> Hm, yes, it's a generic behavior - there is no any separator at 'endmenu' and
>> config options stick together.
>>
>> I've created a patch to fix that. What do you think about it?
>> I can send it to LKML separately.
>>
>>
>> From 50bf59d30fafcdebb3393fb742e1bd51e7d2f2da Mon Sep 17 00:00:00 2001
>> From: Alexander Popov <alex.popov@...ux.com>
>> Date: Tue, 16 Apr 2019 16:09:40 +0300
>> Subject: [PATCH 1/1] kconfig: Terminate menu blocks with a newline in the
>>  generated config
>>
>> Currently menu blocks start with a pretty header but end with nothing in
>> the generated config. So next config options stick together with the
>> options from the menu block.
>>
>> Let's terminate menu blocks with a newline in the generated config.
>>
>> Signed-off-by: Alexander Popov <alex.popov@...ux.com>
>> ---
>>  scripts/kconfig/confdata.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
>> index 08ba146..1459153 100644
>> --- a/scripts/kconfig/confdata.c
>> +++ b/scripts/kconfig/confdata.c
>> @@ -888,6 +888,8 @@ int conf_write(const char *name)
>>                 if (menu->next)
>>                         menu = menu->next;
>>                 else while ((menu = menu->parent)) {
>> +                       if (!menu->sym && menu_is_visible(menu))
>> +                               fprintf(out, "\n");
>>                         if (menu->next) {
>>                                 menu = menu->next;
>>                                 break;
> 
> Seems fine to me. I defer to Masahiro, though. :)

Hi! I've sent this patch separately to LKML:

https://lore.kernel.org/lkml/1555669773-9766-1-git-send-email-alex.popov@linux.com/T/#u

Best regards,
Alexander