[V2,3/9] vhost: fix vhost map leak
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Message ID 20190731084655.7024-4-jasowang@redhat.com
State New
Headers show
Series
  • Fixes for metadata accelreation
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Commit Message

Jason Wang July 31, 2019, 8:46 a.m. UTC
We don't free map during vhost_map_unprefetch(). This means it could
be leaked. Fixing by free the map.

Reported-by: Michael S. Tsirkin <mst@redhat.com>
Fixes: 7f466032dc9e ("vhost: access vq metadata through kernel virtual address")
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/vhost/vhost.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Patch
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diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 17f6abea192e..2a3154976277 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -302,9 +302,7 @@  static void vhost_vq_meta_reset(struct vhost_dev *d)
 static void vhost_map_unprefetch(struct vhost_map *map)
 {
 	kfree(map->pages);
-	map->pages = NULL;
-	map->npages = 0;
-	map->addr = NULL;
+	kfree(map);
 }
 
 static void vhost_uninit_vq_maps(struct vhost_virtqueue *vq)