From: Alexander Potapenko <glider@google.com>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Eric Biggers <ebiggers@kernel.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Robert Elliott <elliott@hpe.com>,
Linux Crypto List <linux-crypto@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-next <linux-next@vger.kernel.org>,
Alexander Potapenko <glider@google.com>
Subject: Re: [PATCH -next 2/2] crypto: x86: kmsan: disable accelerated configs in KMSAN builds
Date: Fri, 16 Sep 2022 11:23:47 +0200 [thread overview]
Message-ID: <CAG_fn=UT24yoY=amdXF5gXQjM9jw8bMamjC-mqJndiXNtNhvLA@mail.gmail.com> (raw)
In-Reply-To: <20220909095811.2166073-2-glider@google.com>
Hi Stephen,
Please use this patch to replace "crypto: x86: kmsan: disable
accelerated configs in KMSAN builds" when merging linux-mm into
linux-next (assuming arch/x86/crypto/Kconfig is still in -next).
On Fri, Sep 9, 2022 at 11:58 AM Alexander Potapenko <glider@google.com> wrote:
>
> KMSAN is unable to understand when initialized values come from assembly.
> Disable accelerated configs in KMSAN builds to prevent false positive
> reports.
>
> Signed-off-by: Alexander Potapenko <glider@google.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Eric Biggers <ebiggers@kernel.org>
> Cc: Herbert Xu <herbert@gondor.apana.org.au>
> Cc: Robert Elliott <elliott@hpe.com>
> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
> Cc: linux-crypto@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-next@vger.kernel.org
> ---
> crypto/Kconfig | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/crypto/Kconfig b/crypto/Kconfig
> index 40423a14f86f5..4a2915bd40d1f 100644
> --- a/crypto/Kconfig
> +++ b/crypto/Kconfig
> @@ -1430,7 +1430,9 @@ endif
> if SPARC
> source "arch/sparc/crypto/Kconfig"
> endif
> -if X86
> +# KMSAN is unable to understand when initialized values come from assembly.
> +# Disable accelerated configs to prevent false positive reports.
> +if X86 && !KMSAN
> source "arch/x86/crypto/Kconfig"
> endif
>
> --
> 2.37.2.789.g6183377224-goog
>
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Paul Manicle, Liana Sebastian
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
next prev parent reply other threads:[~2022-09-16 9:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-09 9:58 [PATCH -next 1/2] x86: crypto: kmsan: revert !KMSAN dependencies Alexander Potapenko
2022-09-09 9:58 ` [PATCH -next 2/2] crypto: x86: kmsan: disable accelerated configs in KMSAN builds Alexander Potapenko
2022-09-16 9:23 ` Alexander Potapenko [this message]
2022-09-18 21:45 ` Stephen Rothwell
2022-09-14 0:52 ` [PATCH -next 1/2] x86: crypto: kmsan: revert !KMSAN dependencies Andrew Morton
2022-09-14 8:18 ` Alexander Potapenko
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