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From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Greg Hackmann <ghackmann@google.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Michal Marek <mmarek@suse.com>
Cc: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
	linux-mm@kvack.org, linux-kbuild@vger.kernel.org,
	Matthias Kaehlcke <mka@chromium.org>,
	Michael Davidson <md@google.com>
Subject: Re: [PATCH 1/4] kasan: support alloca() poisoning
Date: Fri, 14 Jul 2017 19:52:05 +0300	[thread overview]
Message-ID: <0e51dc15-1c93-2326-444d-8257b61af54f@virtuozzo.com> (raw)
In-Reply-To: <39dd8c5c-e606-486a-bcef-b8481c5203a1@google.com>

On 07/14/2017 01:49 AM, Greg Hackmann wrote:
> On 07/10/2017 03:30 AM, Andrey Ryabinin wrote:
>> gcc now supports this too. So I think this patch should enable it.
>> It's off by default so you'll have to add --param asan-instrument-allocas=1 into cflags
>> to make it work
> 
> Thanks, will fix.  For now, it looks like I'll need to build gcc from git to test this?
> 

Right, you'll need quite fresh revision >= 250032

>>>   lib/test_kasan.c  | 22 ++++++++++++++++++++++
>>
>> Tests would be better as a separate patch.
> 
> I was following the precedent in 828347f8f9a5 ("kasan: support use-after-scope detection") which added both at the same time. But I can split the test off into a separate patch if you feel really strongly about it.

Please, do the split.

WARNING: multiple messages have this Message-ID (diff)
From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Greg Hackmann <ghackmann@google.com>,
	Alexander Potapenko <glider@google.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Michal Marek <mmarek@suse.com>
Cc: linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
	linux-mm@kvack.org, linux-kbuild@vger.kernel.org,
	Matthias Kaehlcke <mka@chromium.org>,
	Michael Davidson <md@google.com>
Subject: Re: [PATCH 1/4] kasan: support alloca() poisoning
Date: Fri, 14 Jul 2017 19:52:05 +0300	[thread overview]
Message-ID: <0e51dc15-1c93-2326-444d-8257b61af54f@virtuozzo.com> (raw)
In-Reply-To: <39dd8c5c-e606-486a-bcef-b8481c5203a1@google.com>

On 07/14/2017 01:49 AM, Greg Hackmann wrote:
> On 07/10/2017 03:30 AM, Andrey Ryabinin wrote:
>> gcc now supports this too. So I think this patch should enable it.
>> It's off by default so you'll have to add --param asan-instrument-allocas=1 into cflags
>> to make it work
> 
> Thanks, will fix.  For now, it looks like I'll need to build gcc from git to test this?
> 

Right, you'll need quite fresh revision >= 250032

>>>   lib/test_kasan.c  | 22 ++++++++++++++++++++++
>>
>> Tests would be better as a separate patch.
> 
> I was following the precedent in 828347f8f9a5 ("kasan: support use-after-scope detection") which added both at the same time. But I can split the test off into a separate patch if you feel really strongly about it.

Please, do the split.

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  reply	other threads:[~2017-07-14 16:49 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-06 22:01 [PATCH 0/4] kasan: add clang support Greg Hackmann
2017-07-06 22:01 ` Greg Hackmann
2017-07-06 22:01 ` [PATCH 1/4] kasan: support alloca() poisoning Greg Hackmann
2017-07-06 22:01   ` Greg Hackmann
2017-07-07  0:09   ` Greg Hackmann
2017-07-07  0:09     ` Greg Hackmann
2017-07-10  8:44   ` Dmitry Vyukov
2017-07-10  8:44     ` Dmitry Vyukov
2017-07-13 22:40     ` Greg Hackmann
2017-07-13 22:40       ` Greg Hackmann
2017-07-14  6:13       ` Dmitry Vyukov
2017-07-14  6:13         ` Dmitry Vyukov
2017-07-10 10:30   ` Andrey Ryabinin
2017-07-10 10:30     ` Andrey Ryabinin
2017-07-13 22:49     ` Greg Hackmann
2017-07-13 22:49       ` Greg Hackmann
2017-07-14 16:52       ` Andrey Ryabinin [this message]
2017-07-14 16:52         ` Andrey Ryabinin
2017-07-06 22:01 ` [PATCH 2/4] kasan: added functions for unpoisoning stack variables Greg Hackmann
2017-07-06 22:01   ` Greg Hackmann
2017-07-10  8:46   ` Dmitry Vyukov
2017-07-10  8:46     ` Dmitry Vyukov
2017-07-10 10:31   ` Andrey Ryabinin
2017-07-10 10:31     ` Andrey Ryabinin
2017-07-06 22:01 ` [PATCH 3/4] kasan: support LLVM-style asan parameters Greg Hackmann
2017-07-06 22:01   ` Greg Hackmann
2017-07-10  8:47   ` Dmitry Vyukov
2017-07-10  8:47     ` Dmitry Vyukov
2017-07-06 22:01 ` [PATCH 4/4] kasan: add compiler support for clang Greg Hackmann
2017-07-06 22:01   ` Greg Hackmann
2017-07-10  8:48   ` Dmitry Vyukov
2017-07-10  8:48     ` Dmitry Vyukov
2017-07-10 10:34   ` Andrey Ryabinin
2017-07-10 10:34     ` Andrey Ryabinin

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