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Date: Thu, 4 Feb 2016 18:19:14 +0300
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Subject: Re: [PATCH v6] kernel: add kcov code coverage
From: Andrey Ryabinin <ryabinin.a.a@gmail.com>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: syzkaller <syzkaller@googlegroups.com>,
        Vegard Nossum <vegard.nossum@oracle.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
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        Quentin Casasnovas <quentin.casasnovas@oracle.com>,
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        Alexander Potapenko <glider@google.com>,
        Kees Cook <keescook@google.com>, Bjorn Helgaas <bhelgaas@google.com>,
        Sasha Levin <sasha.levin@oracle.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        David Drysdale <drysdale@google.com>,
        linux-arm-kernel@lists.infradead.org,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        "Kirill A. Shutemov" <kirill@shutemov.name>
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2016-02-04 18:07 GMT+03:00 Dmitry Vyukov <dvyukov@google.com>:
> On Tue, Feb 2, 2016 at 5:02 PM, Andrey Ryabinin <ryabinin.a.a@gmail.com> wrote:
>> 2016-01-25 16:00 GMT+03:00 Dmitry Vyukov <dvyukov@google.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'

From mboxrd@z Thu Jan  1 00:00:00 1970
From: ryabinin.a.a@gmail.com (Andrey Ryabinin)
Date: Thu, 4 Feb 2016 18:19:14 +0300
Subject: [PATCH v6] kernel: add kcov code coverage
In-Reply-To: <CACT4Y+YygZitF6508qNX9885+nWu7iY9YVqdtE0bCA2+soTp_Q@mail.gmail.com>
References: <1453726850-49137-1-git-send-email-dvyukov@google.com>
 <CAPAsAGz6vVGfAPSimwqkneUmzMmrwX_WxdCoQ1xg3UyNn4+-eQ@mail.gmail.com>
 <CACT4Y+YygZitF6508qNX9885+nWu7iY9YVqdtE0bCA2+soTp_Q@mail.gmail.com>
Message-ID: <CAPAsAGx+6tfwbo32EGu6H9Mb6S1WXLvQOYzBrhhc=q=N7sFYgw@mail.gmail.com>
To: linux-arm-kernel@lists.infradead.org
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2016-02-04 18:07 GMT+03:00 Dmitry Vyukov <dvyukov@google.com>:
> On Tue, Feb 2, 2016 at 5:02 PM, Andrey Ryabinin <ryabinin.a.a@gmail.com> wrote:
>> 2016-01-25 16:00 GMT+03:00 Dmitry Vyukov <dvyukov@google.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'