4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Hildenbrand <david@xxxxxxxxxx> commit 3f1959721558a976aaf9c2024d5bc884e6411bf7 upstream. 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> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- mm/kasan/kasan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -548,5 +548,5 @@ static int __init kasan_memhotplug_init( return 0; } -module_init(kasan_memhotplug_init); +core_initcall(kasan_memhotplug_init); #endif
