virtio-blk: Fix memory leak among suspend/resume procedure

The vblk->vqs should be freed before we call init_vqs()
in virtblk_restore().

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20210517084332.280-1-xieyongji@bytedance.com
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 6dda64f..c3e260d 100644 (file)
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -929,6 +929,8 @@ static int virtblk_freeze(struct virtio_device *vdev)
        blk_mq_quiesce_queue(vblk->disk->queue);
 
        vdev->config->del_vqs(vdev);
+       kfree(vblk->vqs);
+
        return 0;
 }