Btrfs: dereferencing freed memory

The original code dereferenced range on the next line.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5c9f8b3..874d36e 100644 (file)
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1374,6 +1374,7 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
                                           sizeof(*range))) {
                                ret = -EFAULT;
                                kfree(range);
+                               goto out;
                        }
                        /* compression requires us to start the IO */
                        if ((range->flags & BTRFS_DEFRAG_RANGE_COMPRESS)) {