linux-kernel - [PATCH 2/5] x86/purgatory: disable KMSAN instrumentation

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Message-ID: <20221024212144.2852069-2-glider@google.com>
Date:   Mon, 24 Oct 2022 23:21:41 +0200
From:   Alexander Potapenko <glider@...gle.com>
To:     glider@...gle.com
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org
Subject: [PATCH 2/5] x86/purgatory: disable KMSAN instrumentation

The stand-alone purgatory.ro does not contain the KMSAN runtime,
therefore it can't be built with KMSAN compiler instrumentation.

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: x86@...nel.org
Link: https://github.com/google/kmsan/issues/89
Signed-off-by: Alexander Potapenko <glider@...gle.com>
---
 arch/x86/purgatory/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index 58a200dc762d6..17f09dc263811 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -26,6 +26,7 @@ GCOV_PROFILE	:= n
 KASAN_SANITIZE	:= n
 UBSAN_SANITIZE	:= n
 KCSAN_SANITIZE	:= n
+KMSAN_SANITIZE	:= n
 KCOV_INSTRUMENT := n
 
 # These are adjustments to the compiler flags used for objects that
-- 
2.38.0.135.g90850a2211-goog