kmemleak: Release the object lock before calling put_object()



The put_object() function may free the object if the use_count
dropped to 0. There shouldn't be further accesses to such object unless
it is known that the use_count is non-zero.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

parent a6f5aa1e

mm/kmemleak.c

+6 −3

Original line number	Diff line number	Diff line
		@@ -1025,11 +1025,14 @@ static void scan_block(void _start, void _end,
		* added to the gray_list.
		*/
		object->count++;
		if (color_gray(object))
		if (color_gray(object)) {
		list_add_tail(&object->gray_list, &gray_list);
		else
		put_object(object);
		spin_unlock_irqrestore(&object->lock, flags);
		continue;
		}

		spin_unlock_irqrestore(&object->lock, flags);
		put_object(object);
		}
		}