Commit ed1596f9 authored May 25, 2018 by David Hildenbrand Committed by Linus Torvalds May 25, 2018

kasan: free allocated shadow memory on MEM_CANCEL_ONLINE

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@redhat.com


Fixes: fa69b598 ("mm/kasan: add support for memory hotplug")
Signed-off-by: David Hildenbrand <david@redhat.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent d41362ed

mm/kasan/kasan.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -866,6 +866,7 @@ static int __meminit kasan_mem_notifier(struct notifier_block *nb,
		kmemleak_ignore(ret);
		return NOTIFY_OK;
		}
		case MEM_CANCEL_ONLINE:
		case MEM_OFFLINE: {
		struct vm_struct *vm;