From: "Michael S. Tsirkin" mst@redhat.com
[ Upstream commit 245cdd9fbd396483d501db83047116e2530f245f ]
When device stop was moved out of reset, test device wasn't updated to stop before reset, this resulted in a use after free. Fix by invoking stop appropriately.
Fixes: b211616d7125 ("vhost: move -net specific code out") Signed-off-by: Michael S. Tsirkin mst@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/vhost/test.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c index 7804869c6a313..056308008288c 100644 --- a/drivers/vhost/test.c +++ b/drivers/vhost/test.c @@ -161,6 +161,7 @@ static int vhost_test_release(struct inode *inode, struct file *f)
vhost_test_stop(n, &private); vhost_test_flush(n); + vhost_dev_stop(&n->dev); vhost_dev_cleanup(&n->dev); /* We do an extra flush before freeing memory, * since jobs can re-queue themselves. */ @@ -237,6 +238,7 @@ static long vhost_test_reset_owner(struct vhost_test *n) } vhost_test_stop(n, &priv); vhost_test_flush(n); + vhost_dev_stop(&n->dev); vhost_dev_reset_owner(&n->dev, umem); done: mutex_unlock(&n->dev.mutex);