1 files changed, 5 insertions, 0 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 0adf5422fce9..3e3e6130637f 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -4639,6 +4639,11 @@ locked:
                 bctl->flags |= BTRFS_BALANCE_TYPE_MASK;
         }
 
+        if (bctl->flags & ~(BTRFS_BALANCE_ARGS_MASK | BTRFS_BALANCE_TYPE_MASK)) {
+                ret = -EINVAL;
+                goto out_bargs;
+        }
+
 do_balance:
         /*
          * Ownership of bctl and mutually_exclusive_operation_running