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kasan: free allocated shadow memory on MEM_CANCEL_ONLINE

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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: fa69b5989bb0 ("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>
This commit is contained in:
David Hildenbrand 2018-05-25 14:48:08 -07:00 committed by Linus Torvalds
parent d41362ed12
commit ed1596f9ab
1 changed files with 1 additions and 0 deletions
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mm/kasan/kasan.c
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@ -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;