The patch titled
Subject: x86/purgatory: disable KMSAN instrumentation
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
x86-purgatory-disable-kmsan-instrumentation.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/x86-purgatory-disable-kmsan-instrumentation.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: x86/purgatory: disable KMSAN instrumentation
Date: Mon, 24 Oct 2022 23:21:41 +0200
The stand-alone purgatory.ro does not contain the KMSAN runtime, therefore
it can't be built with KMSAN compiler instrumentation.
Link: https://lkml.kernel.org/r/20221024212144.2852069-2-glider@xxxxxxxxxx
Link: https://github.com/google/kmsan/issues/89
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/purgatory/Makefile | 1 +
1 file changed, 1 insertion(+)
--- a/arch/x86/purgatory/Makefile~x86-purgatory-disable-kmsan-instrumentation
+++ a/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
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
mm-kmsan-export-kmsan_copy_page_meta.patch
x86-purgatory-disable-kmsan-instrumentation.patch
kconfigdebug-disable-config_frame_warn-for-kmsan-by-default.patch
x86-asm-make-sure-__put_user_size-evaluates-pointer-once.patch
x86-fortify-kmsan-fix-kmsan-fortify-builds.patch
