Virtualization - Jul 2021 - [PATCH AUTOSEL 4.9 15/16] virtio-blk: Fix memory leak among suspend/resume procedure

From: Xie Yongji <xieyongji at bytedance.com>

[ Upstream commit b71ba22e7c6c6b279c66f53ee7818709774efa1f ]

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

Signed-off-by: Xie Yongji <xieyongji at bytedance.com>
Link: https://lore.kernel.org/r/20210517084332.280-1-xieyongji at bytedance.com
Acked-by: Jason Wang <jasowang at redhat.com>
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/block/virtio_blk.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index e57a1f6e39d5..302260e9002c 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -800,6 +800,8 @@ static int virtblk_freeze(struct virtio_device *vdev)
 	blk_mq_stop_hw_queues(vblk->disk->queue);
 
 	vdev->config->del_vqs(vdev);
+	kfree(vblk->vqs);
+
 	return 0;
 }
 
-- 
2.30.2