On 08/03/2018 08:11 PM, Tetsuo Handa wrote:

On 2018/08/03 17:32, Wei Wang wrote:

quoted

+static int virtio_balloon_register_shrinker(struct virtio_balloon *vb)
+{
+	vb->shrinker.scan_objects = virtio_balloon_shrinker_scan;
+	vb->shrinker.count_objects = virtio_balloon_shrinker_count;
+	vb->shrinker.batch = 0;
+	vb->shrinker.seeks = DEFAULT_SEEKS;

Why flags field is not set? If vb is allocated by kmalloc(GFP_KERNEL)
and is nowhere zero-cleared, KASAN would complain it.

Could you point where in the code that would complain it?
I only see two shrinker flags (NUMA_AWARE and MEMCG_AWARE), and they 
seem not related to that.


Best,
Wei