4.9-stable review patch. If anyone has any objections, please let me know.
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From: Arvind Yadav arvind.yadav.cs@gmail.com
[ Upstream commit 351b2bccede1cb673ec7957b35ea997ea24c8884 ]
Never directly free @dev after calling device_register(), even if it returned an error! Always use put_device() to give up the reference initialized.
Signed-off-by: Arvind Yadav arvind.yadav.cs@gmail.com Reviewed-by: Juergen Gross jgross@suse.com Signed-off-by: Juergen Gross jgross@suse.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/xen/xenbus/xenbus_probe.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/xen/xenbus/xenbus_probe.c +++ b/drivers/xen/xenbus/xenbus_probe.c @@ -470,8 +470,11 @@ int xenbus_probe_node(struct xen_bus_typ
/* Register with generic device framework. */ err = device_register(&xendev->dev); - if (err) + if (err) { + put_device(&xendev->dev); + xendev = NULL; goto fail; + }
return 0; fail: