um: Add BUG() to do_ops()'s error path

In case we encounter a bad operation in do_ops() something is really
broken and it's better to BUG().

Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
index 7f3d4d86431a..f819af951c19 100644
--- a/arch/um/kernel/tlb.c
+++ b/arch/um/kernel/tlb.c
@@ -75,6 +75,7 @@ static int do_ops(struct host_vm_change *hvc, int end,
                 default:
                         printk(KERN_ERR "Unknown op type %d in do_ops\n",
                                op->type);
+                        BUG();
                         break;
                 }
         }