Unkillable process with SCHED_ULE

[Jiawei Ye]

  PID  TT  STAT      TIME COMMAND
 2317  p0  Ss     0:00.02 -bash (bash)
 2480  p0  S+     0:00.01 screen -D -R
 2447  p1- DE     0:00.01 tail -f update.log
 2483  p1  Ss     0:00.04 /usr/local/bin/bash
 2515  p1  R+     0:00.00 ps

PID 2447 is in an unkillable state right now. 'kill -9' does not work.
I'll leave it as it is for the time being. Please let me know if there
is any more information I can provide you with.

Jiawei

-- 
"Without the userland, the kernel is useless."
               --inspired by The Tao of Programming