Re: [PATCH 2/3] asm-generic, x86: wrap atomic operations

[Dmitry Vyukov]

On Wed, Mar 22, 2017 at 12:30 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Wed, Mar 22, 2017 at 11:42 AM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
>> On Tue, Mar 21, 2017 at 10:20 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
>>> On Tue, Mar 21, 2017 at 7:06 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
>>
>> Initially I've tested with my stock gcc 4.8.4 (Ubuntu
>> 4.8.4-2ubuntu1~14.04.3) and amusingly it works. But I can reproduce
>> the bug with 7.0.1.
>
> It's probably because gcc-4.8 didn't support KASAN yet, so the added
> check had no effect.

I've tested without KASAN with both compilers.