VHOST_GET_FEATURES returns high-order garbage on 32-bit
machines. This patch fixes it to use 64 bits throughout.
+-DLS
[in-line for viewing, attached to avoid whitespace mangling]
Signed-off-by: David L Stevens <dlstevens@xxxxxxxxxx>
--- a/drivers/vhost/net.c 2009-11-17 22:51:56.000000000 -0800
+++ b/drivers/vhost/net.c 2009-12-17 11:31:51.000000000 -0800
@@ -563,7 +563,7 @@
{
struct vhost_net *n = f->private_data;
void __user *argp = (void __user *)arg;
- u32 __user *featurep = argp;
+ u64 __user *featurep = (u64 __user *)argp;
struct vhost_vring_file backend;
u64 features;
int r;
@@ -577,7 +577,7 @@
features = VHOST_FEATURES;
return put_user(features, featurep);
case VHOST_SET_FEATURES:
- r = get_user(features, featurep);
+ r = copy_from_user(&features, featurep, sizeof features);
/* No features for now */
if (r < 0)
return r;
Attachment:
VH1.patch
Description: Binary data
