From a71852147516bc1cb5b0b3cbd13639bfd4022dc8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?=
 <emulatorman@parabola.nu>
Date: Thu, 29 Oct 2015 13:45:54 -0300
Subject: Linux-libre 4.2.5-gnu

---
 fs/btrfs/ioctl.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'fs/btrfs/ioctl.c')

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 0770c9158..f490b6155 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -4647,6 +4647,11 @@ 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
-- 
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