linux-kernel - Re: [PATCH] [v2] kasan: remove clang version check for KASAN

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Message-ID: <a3a12316-87b6-a6d9-d831-2f62f0bfbedc@virtuozzo.com>
Date:   Mon, 22 Jul 2019 15:27:32 +0300
From:   Andrey Ryabinin <aryabinin@...tuozzo.com>
To:     Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Qian Cai <cai@....pw>, Mark Brown <broonie@...nel.org>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        linux-kernel@...r.kernel.org, clang-built-linux@...glegroups.com
Subject: Re: [PATCH] [v2] kasan: remove clang version check for KASAN_STACK



On 7/19/19 11:03 PM, Arnd Bergmann wrote:
> asan-stack mode still uses dangerously large kernel stacks of
> tens of kilobytes in some drivers, and it does not seem that anyone
> is working on the clang bug.
> 
> Turn it off for all clang versions to prevent users from
> accidentally enabling it once they update to clang-9, and
> to help automated build testing with clang-9.
> 
> Link: https://bugs.llvm.org/show_bug.cgi?id=38809
> Fixes: 6baec880d7a5 ("kasan: turn off asan-stack for clang-8 and earlier")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---

Reviewed-by: Andrey Ryabinin <aryabinin@...tuozzo.com>