linux-kernel - Re: [PATCH v3 2/3] Makefile: support flag -fsanitizer-coverage=trace-cmp

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Date:   Wed, 11 Oct 2017 11:57:08 +0200
From:   Alexander Potapenko <glider@...gle.com>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Popov <alex.popov@...ux.com>,
        Quentin Casasnovas <quentin.casasnovas@...cle.com>,
        Dmitriy Vyukov <dvyukov@...gle.com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Vegard Nossum <vegard.nossum@...cle.com>,
        syzkaller <syzkaller@...glegroups.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/3] Makefile: support flag -fsanitizer-coverage=trace-cmp

On Tue, Oct 10, 2017 at 5:51 PM, Andrey Ryabinin
<aryabinin@...tuozzo.com> wrote:
>
>
> On 10/10/2017 06:27 PM, Alexander Potapenko wrote:
>>
>> v3: - Andrey Ryabinin's comments: reinstated scripts/Makefile.kcov
>>       and moved CFLAGS_KCOV there, dropped CFLAGS_KCOV_COMPS
>
> Huh? Try again.
Reverted Makefile.lib in v4. Thanks!
>> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
>> index 5e975fee0f5b..7ddd5932c832 100644
>> --- a/scripts/Makefile.lib
>> +++ b/scripts/Makefile.lib
>> @@ -142,6 +142,12 @@ _c_flags += $(if $(patsubst n%,, \
>>       $(CFLAGS_KCOV))
>>  endif
>>
>> +ifeq ($(CONFIG_KCOV_ENABLE_COMPARISONS),y)
>> +_c_flags += $(if $(patsubst n%,, \
>> +     $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \
>> +     $(CFLAGS_KCOV_COMPS))
>> +endif
>> +
>>  # If building the kernel in a separate objtree expand all occurrences
>>  # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
>>
>>



-- 
Alexander Potapenko
Software Engineer

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