Re: ATF tests hanging

[Andreas Gustafsson <gson%gson.org@localhost>]

I just noticed another problem that may be related: on pmax, the
t_ptrace_wait test is triggering a panic:

  babylon5.netbsd.org$ tail -n 19 /bracket/pmax/test/2017.12.25.17.00.15/test.log 
  lib/libc/sys/t_ptrace_wait (279/719): 81 test cases
      attach3: [0.417968s] Passed.
      attach4: [0.402344s] Passed.
      eventmask1: [0.382812s] Passed.
      eventmask2: [1.054688s] Passed.
      eventmask3: sorry, pid 14241 was killed: orphaned traced process
  [0.367187s] Expected failure: PR kern/51630: /tmp/bracket/build/2017.12.25.17.00.15-pmax/src/tests/lib/libc/sys/t_ptrace_wait.c:1137: memcmp(&set_event, &get_event, len) == 0 not met
      eventmask4: [0.371094s] Passed.
      eventmask5: [0.367188s] Passed.
      eventmask6: [0.902343s] Passed.
      fork2: [0.402344s] Passed.
      fpregs1: [ warning: LOW reference: vaddr=0x00000084, exception TLBL, pc=0x800580dc <(no symbol)> ]
  pid 18518(t_ptrace_wait): trap: cpu0, TLB miss (load or instr. fetch) in kernel mode
  status=0x8ff34, cause=0x8, epc=0x800580dc, vaddr=0x84
  tf=0x80b038b0 ksp=0x80b03950 ra=0x8036799c ppl=0x8054cee0
  kernel: TLB miss (load or instr. fetch) trap
  Stopped in pid 18518.1 (t_ptrace_wait) at       netbsd:process_read_fpregs+0x14:
          lw      v1,0(a2)
  db>

This started some time between source date 2017.12.07.03.25.51 and
2017.12.12.08.27.32.
-- 
Andreas Gustafsson, gson%gson.org@localhost