1 files changed, 4 insertions, 1 deletions

diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index cae0a852619e..b73373216b0e 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -545,6 +545,7 @@ static int compat_blk_trace_setup(struct block_device *bdev, char __user *arg)
         struct blk_user_trace_setup buts;
         struct compat_blk_user_trace_setup cbuts;
         struct request_queue *q;
+        char b[BDEVNAME_SIZE];
         int ret;
 
         q = bdev_get_queue(bdev);
@@ -554,6 +555,8 @@ static int compat_blk_trace_setup(struct block_device *bdev, char __user *arg)
         if (copy_from_user(&cbuts, arg, sizeof(cbuts)))
                 return -EFAULT;
 
+        strcpy(b, bdevname(bdev, b));
+
         buts = (struct blk_user_trace_setup) {
                 .act_mask = cbuts.act_mask,
                 .buf_size = cbuts.buf_size,
@@ -565,7 +568,7 @@ static int compat_blk_trace_setup(struct block_device *bdev, char __user *arg)
         memcpy(&buts.name, &cbuts.name, 32);
 
         mutex_lock(&bdev->bd_mutex);
-        ret = do_blk_trace_setup(q, bdev, &buts);
+        ret = do_blk_trace_setup(q, b, bdev->bd_dev, &buts);
         mutex_unlock(&bdev->bd_mutex);
         if (ret)
                 return ret;