linux-kernel - Re: [PATCH v6] kernel: add kcov code coverage

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Date:	Thu, 4 Feb 2016 18:19:14 +0300
From:	Andrey Ryabinin <ryabinin.a.a@...il.com>
To:	Dmitry Vyukov <dvyukov@...gle.com>
Cc:	syzkaller <syzkaller@...glegroups.com>,
	Vegard Nossum <vegard.nossum@...cle.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Tavis Ormandy <taviso@...gle.com>,
	Will Deacon <will.deacon@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Quentin Casasnovas <quentin.casasnovas@...cle.com>,
	Kostya Serebryany <kcc@...gle.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	Kees Cook <keescook@...gle.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Drysdale <drysdale@...gle.com>,
	linux-arm-kernel@...ts.infradead.org,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	"Kirill A. Shutemov" <kirill@...temov.name>
Subject: Re: [PATCH v6] kernel: add kcov code coverage

2016-02-04 18:07 GMT+03:00 Dmitry Vyukov <dvyukov@...gle.com>:
> On Tue, Feb 2, 2016 at 5:02 PM, Andrey Ryabinin <ryabinin.a.a@...il.com> wrote:
>> 2016-01-25 16:00 GMT+03:00 Dmitry Vyukov <dvyukov@...gle.com>:
>>
>>> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
>>> index ecb9e75..cde6bd1 100644
>>> --- a/lib/Kconfig.debug
>>> +++ b/lib/Kconfig.debug
>>> @@ -678,6 +678,26 @@ config DEBUG_STACKOVERFLOW
>>>
>>>           If in doubt, say "N".
>>>
>>> +config ARCH_HAS_KCOV
>>> +       bool
>>> +       help
>>> +         KCOV does not have any arch-specific code, but currently it is enabled
>>> +         only for x86_64. KCOV requires testing on other archs, and most likely
>>> +         disabling of instrumentation for some early boot code.
>>> +
>>> +config KCOV
>>> +       bool "Code coverage for fuzzing"
>>> +       depends on ARCH_HAS_KCOV
>>
>> I think we should select DEBUG_FS here, since this useless without it.
>
> Done in v7
>
>> Also you placed this into 'Memory Debugging' submenu which seems wrong.
>
> Any better suggestions?
>

Just 'Kernel hacking'