linux-kernel - [PATCH] lib/crypto: nh: Restore dependency of arch code on !KMSAN

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Message-ID: <20260105053652.1708299-1-ebiggers@kernel.org>
Date: Sun,  4 Jan 2026 21:36:52 -0800
From: Eric Biggers <ebiggers@...nel.org>
To: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Ard Biesheuvel <ardb@...nel.org>,
	"Jason A . Donenfeld" <Jason@...c4.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Eric Biggers <ebiggers@...nel.org>
Subject: [PATCH] lib/crypto: nh: Restore dependency of arch code on !KMSAN

Since the architecture-specific implementations of NH initialize memory
in assembly code, they aren't compatible with KMSAN as-is.

Fixes: 382de740759a ("lib/crypto: nh: Add NH library")
Signed-off-by: Eric Biggers <ebiggers@...nel.org>
---
 lib/crypto/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/crypto/Kconfig b/lib/crypto/Kconfig
index 33cf46bbadc8..781a42c5c572 100644
--- a/lib/crypto/Kconfig
+++ b/lib/crypto/Kconfig
@@ -114,11 +114,11 @@ config CRYPTO_LIB_NH
 	  Implementation of the NH almost-universal hash function, specifically
 	  the variant of NH used in Adiantum.
 
 config CRYPTO_LIB_NH_ARCH
 	bool
-	depends on CRYPTO_LIB_NH && !UML
+	depends on CRYPTO_LIB_NH && !UML && !KMSAN
 	default y if ARM && KERNEL_MODE_NEON
 	default y if ARM64 && KERNEL_MODE_NEON
 	default y if X86_64
 
 config CRYPTO_LIB_POLY1305

base-commit: e78a3142fa5875126e477fdfe329b0aeb1b0693f
-- 
2.52.0