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 [thread overview]
Message-ID: <165599625020.2988777.9370908523559678089.b4-ty@kernel.org> (raw)
In-Reply-To: <c4c944a2a905e949760fbeb29258185087171708.1653317461.git.andreyknvl@google.com>
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
next prev parent reply other threads:[~2022-06-23 19:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-23 14:51 [PATCH v2 1/2] arm64: kasan: do not instrument stacktrace.c andrey.konovalov
2022-05-23 14:51 ` [PATCH v2 2/2] arm64: stacktrace: use non-atomic __set_bit andrey.konovalov
2022-06-23 19:31 ` Will Deacon [this message]
2022-06-26 9:21 ` [PATCH v2 1/2] arm64: kasan: do not instrument stacktrace.c Mark Rutland
2022-06-28 13:14 ` Andrey Konovalov
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