4.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: David Hildenbrand <david@xxxxxxxxxx> commit ed1596f9ab958dd156a66c9ff1029d3761c1786a upstream. We have to free memory again when we cancel onlining, otherwise a later onlining attempt will fail. Link: http://lkml.kernel.org/r/20180522100756.18478-2-david@xxxxxxxxxx Fixes: fa69b5989bb0 ("mm/kasan: add support for 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 | 1 + 1 file changed, 1 insertion(+) --- a/mm/kasan/kasan.c +++ b/mm/kasan/kasan.c @@ -865,6 +865,7 @@ static int __meminit kasan_mem_notifier( kmemleak_ignore(ret); return NOTIFY_OK; } + case MEM_CANCEL_ONLINE: case MEM_OFFLINE: { struct vm_struct *vm;
