Merge branch 'linus' into core/urgent, to pick up dependent commits

[linux] / kernel / futex.c

diff --git a/kernel/futex.c b/kernel/futex.c
index ca5bb9c..76ed592 100644 (file)
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -1587,8 +1587,16 @@ static int futex_atomic_op_inuser(unsigned int encoded_op, u32 __user *uaddr)
        int oldval, ret;
 
        if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) {
-               if (oparg < 0 || oparg > 31)
-                       return -EINVAL;
+               if (oparg < 0 || oparg > 31) {
+                       char comm[sizeof(current->comm)];
+                       /*
+                        * kill this print and return -EINVAL when userspace
+                        * is sane again
+                        */
+                       pr_info_ratelimited("futex_wake_op: %s tries to shift op by %d; fix this program\n",
+                                       get_task_comm(comm, current), oparg);
+                       oparg &= 31;
+               }
                oparg = 1 << oparg;
        }