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From:   Will Deacon <will@kernel.org>
To:     andrey.konovalov@linux.dev,
        Catalin Marinas <catalin.marinas@arm.com>
Cc:     kernel-team@android.com, Will Deacon <will@kernel.org>,
        Alexander Potapenko <glider@google.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Dmitry Vyukov <dvyukov@google.com>,
        linux-arm-kernel@lists.infradead.org,
        Vincenzo Frascino <vincenzo.frascino@arm.com>,
        Andrey Konovalov <andreyknvl@gmail.com>,
        kasan-dev@googlegroups.com,
        Andrey Konovalov <andreyknvl@google.com>,
        Marco Elver <elver@google.com>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: kasan: do not instrument stacktrace.c
Date:   Thu, 23 Jun 2022 20:31:32 +0100
Message-Id: <165599625020.2988777.9370908523559678089.b4-ty@kernel.org>
In-Reply-To: <c4c944a2a905e949760fbeb29258185087171708.1653317461.git.andreyknvl@google.com>
References: <c4c944a2a905e949760fbeb29258185087171708.1653317461.git.andreyknvl@google.com>
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On Mon, 23 May 2022 16:51:51 +0200, andrey.konovalov@linux.dev wrote:
> From: Andrey Konovalov <andreyknvl@google.com>
> 
> Disable KASAN instrumentation of arch/arm64/kernel/stacktrace.c.
> 
> This speeds up Generic KASAN by 5-20%.
> 
> As a side-effect, KASAN is now unable to detect bugs in the stack trace
> collection code. This is taken as an acceptable downside.
> 
> [...]

Applied to arm64 (for-next/stacktrace), thanks! I had to fix conflicts
in both of the patches, so please can you take a quick look at the result?

[1/2] arm64: kasan: do not instrument stacktrace.c
      https://git.kernel.org/arm64/c/802b91118d11
[2/2] arm64: stacktrace: use non-atomic __set_bit
      https://git.kernel.org/arm64/c/446297b28a21

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev