Corrupted symbol names on lockstat

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

Hi,

It seems ksyms (or something) is broken in a recent commit.
lockstat shows corrupted caller names like the following
output:

----
$ sudo lockstat sleep 10
Password:
Elapsed time: 9.99 seconds.

-- Adaptive mutex spin

Total%  Count   Time/ms          Lock                       Caller
------ ------- --------- ---------------------- ------------------------------
 95.76      35      0.22                              <all>
 91.23      30      0.21                              +103
  3.41       2      0.01                              +5f
  1.12       3      0.00                              ?+71
  4.24       2      0.01 fffffe827fba0f40       +1c

-- Spin mutex spin

Total%  Count   Time/ms          Lock                       Caller
------ ------- --------- ---------------------- ------------------------------
 95.16      18      0.03 fffffe827f732640       <all>
 92.41      17      0.02 fffffe827f732640       +95
  2.76       1      0.00 fffffe827f732640       +6f
  2.72       1      0.00 fffffe827f7355c0       +103
  2.12       1      0.00 fffffe827f7359c0       +103
----

I tested on a latest HEAD of -current kernel and userland
(self-build) and recent releng binaries built at 201412141850Z.
Both are amd64.

Do anyone know what happens?

Thanks,
  ozaki-r