btrfs: check unsupported filters in balance arguments

[karo-tx-linux.git] / fs / btrfs / ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 0adf5422fce9d4b9fc62c2bbf319429b38aaec7c..3e3e6130637fa7268e6834c6fafe129de84345a7 100644 (file)
--- 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