[PATCH v2 2/2] kasan: fix memory hotplug during boot

From: David Hildenbrand
Date: Tue May 22 2018 - 05:20:25 EST


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 reproducable with QEMU, just specify a DIMM when starting up.

Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
mm/kasan/kasan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/kasan/kasan.c b/mm/kasan/kasan.c
index 53564229674b..a8b85706e2d6 100644
--- a/mm/kasan/kasan.c
+++ b/mm/kasan/kasan.c
@@ -892,5 +892,5 @@ static int __init kasan_memhotplug_init(void)
return 0;
}

-module_init(kasan_memhotplug_init);
+core_initcall(kasan_memhotplug_init);
#endif
--
2.17.0