linux-kernel - [PATCH -next 2/2] crypto: x86: kmsan: disable accelerated configs in KMSAN builds

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Date:   Fri,  9 Sep 2022 11:58:11 +0200
From:   Alexander Potapenko <glider@...gle.com>
To:     glider@...gle.com
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Eric Biggers <ebiggers@...nel.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Robert Elliott <elliott@....com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-next@...r.kernel.org
Subject: [PATCH -next 2/2] crypto: x86: kmsan: disable accelerated configs in
 KMSAN builds

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@...gle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Eric Biggers <ebiggers@...nel.org>
Cc: Herbert Xu <herbert@...dor.apana.org.au>
Cc: Robert Elliott <elliott@....com>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-next@...r.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