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Date:   Tue, 18 Oct 2022 11:34:18 +0200
From:   Pavel Machek <pavel@denx.de>
To:     Sasha Levin <sashal@kernel.org>
Cc:     linux-kernel@vger.kernel.org, stable@vger.kernel.org,
        Alexander Potapenko <glider@google.com>,
        Alexander Viro <viro@zeniv.linux.org.uk>,
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Subject: Re: [PATCH AUTOSEL 5.10 13/16] kmsan: disable physical page merging
 in biovec
Message-ID: <20221018093418.GA1264@duo.ucw.cz>
References: <20221018001029.2731620-1-sashal@kernel.org>
 <20221018001029.2731620-13-sashal@kernel.org>
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Hi!

> From: Alexander Potapenko <glider@google.com>
>=20
> [ Upstream commit f630a5d0ca59a6e73b61e3f82c371dc230da99ff ]
>=20
> KMSAN metadata for adjacent physical pages may not be adjacent, therefore
> accessing such pages together may lead to metadata corruption.  We disable
> merging pages in biovec to prevent such corruptions.

KMSAN is not there at least in 5.10, so we should not have this in
-stable.

Best regards,
								Pavel
--=20
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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