[PATCH] vhost/test: stop device before reset
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2019-10-07 18:30:32
Also in:
kvm, lkml
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
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>
---
drivers/vhost/test.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index 04edd8db62fc..e3a8e9db22cd 100644
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/test.c@@ -170,6 +170,7 @@ 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. */
@@ -246,6 +247,7 @@ 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);
--
MST