The patch titled
Subject: kasan: fix memory hotplug during boot
has been added to the -mm tree. Its filename is
kasan-fix-memory-hotplug-during-boot.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kasan-fix-memory-hotplug-during-boot.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kasan-fix-memory-hotplug-during-boot.patch
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------------------------------------------------------
From: David Hildenbrand <david@xxxxxxxxxx>
Subject: kasan: fix memory hotplug during boot
Using module_init() is wrong. E.g. ACPI adds and onlines memory before
our memory notifier gets registered.
This makes sure that ACPI memory detected during boot up will not result
in a kernel crash.
Easily reproducible with QEMU, just specify a DIMM when starting up.
Link: http://lkml.kernel.org/r/20180522100756.18478-3-david@xxxxxxxxxx
Fixes: 786a8959912e ("kasan: disable memory hotplug")
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kasan/kasan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/kasan/kasan.c~kasan-fix-memory-hotplug-during-boot mm/kasan/kasan.c
--- a/mm/kasan/kasan.c~kasan-fix-memory-hotplug-during-boot
+++ a/mm/kasan/kasan.c
@@ -892,5 +892,5 @@ static int __init kasan_memhotplug_init(
return 0;
}
-module_init(kasan_memhotplug_init);
+core_initcall(kasan_memhotplug_init);
#endif
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
kasan-free-allocated-shadow-memory-on-mem_cancel_online.patch
kasan-fix-memory-hotplug-during-boot.patch
