unkillable process in physrd-sttae

[Mikhail Teterin]

As I was playing a DVD, the picture stopped and everything seemingly
froze. I was able to login from another machine and look, what's
happening.

last pid: 61719;  load averages:  0.01,  0.21,  0.56    up 0+02:06:15 18:47:36
65 processes:  1 running, 64 sleeping
CPU states:  1.6% user,  0.0% nice,  0.8% system,  4.3% interrupt, 93.4% idle
Mem: 56M Active, 106M Inact, 52M Wired, 17M Cache, 34M Buf, 6672K Free
Swap: 2322M Total, 42M Used, 2280M Free, 1% Inuse

  PID USERNAME PRI NICE   SIZE    RES STATE    TIME   WCPU    CPU COMMAND
61428 mi        -8    0 28708K 21856K physrd   0:39  0.00%  0.00% mplayer
  622 mi        76    0   148M 15456K select   0:36  0.00%  0.00% XFree86
  693 mi        76    0 54848K 17136K select   0:22  0.00%  0.00% kdeinit
  647 mi        76    0 25764K 12460K select   0:18  0.00%  0.00% kdeinit
[...]

As with the NFS-stuck processes of the bad old days, the physrd-stuck
process is unkillable (including SIGKILL, of course) and will require me
to reboot the whole machine...

This is on -current from July 3rd.

	-mi