On 07/01/2016 10:53 AM, js1304@xxxxxxxxx wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
>
> If we move an item on qlist's tail, we need to update qlist's tail
> properly. curr->next can be NULL since it is singly linked list
> so it is invalid for tail. curr is scheduled to be moved so
> using prev would be correct.
Hmm.. prev may be the element that moved in 'to' list. We need to assign the last element
from which is in ther 'from' list.
>
> Unfortunately, I got this bug sometime ago and lose oops message.
> But, the bug looks trivial and no need to attach oops.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
> ---
> mm/kasan/quarantine.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/kasan/quarantine.c b/mm/kasan/quarantine.c
> index 4973505..9a132fd 100644
> --- a/mm/kasan/quarantine.c
> +++ b/mm/kasan/quarantine.c
> @@ -255,7 +255,7 @@ static void qlist_move_cache(struct qlist_head *from,
> } else
> prev->next = curr->next;
> if (unlikely(from->tail == qlink))
> - from->tail = curr->next;
> + from->tail = prev;
> from->bytes -= cache->size;
> qlist_put(to, qlink, cache->size);
> } else {
>
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