vhost: fix return code for log_access_ok()
authorDan Carpenter <error27@gmail.com>
Mon, 11 Oct 2010 17:24:19 +0000 (19:24 +0200)
committerMichael S. Tsirkin <mst@redhat.com>
Tue, 12 Oct 2010 12:32:28 +0000 (14:32 +0200)
access_ok() returns 1 if it's OK otherwise it should return 0.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/vhost/vhost.c

index dd3d6f7..158004e 100644 (file)
@@ -371,7 +371,7 @@ static int log_access_ok(void __user *log_base, u64 addr, unsigned long sz)
        /* Make sure 64 bit math will not overflow. */
        if (a > ULONG_MAX - (unsigned long)log_base ||
            a + (unsigned long)log_base > ULONG_MAX)
-               return -EFAULT;
+               return 0;
 
        return access_ok(VERIFY_WRITE, log_base + a,
                         (sz + VHOST_PAGE_SIZE * 8 - 1) / VHOST_PAGE_SIZE / 8);