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port-m68k/48076: An userland of NetBSD/x68k after 2013-07-20 does not work at all.

>Number:         48076
>Category:       port-m68k
>Synopsis:       An userland of NetBSD/x68k after 2013-07-20 does not work at 
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-m68k-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 23 18:55:00 +0000 2013
>Originator:     Yasushi Oshima
>Release:        NetBSD-current 6.99.23
NetBSD  6.99.23 NetBSD 6.99.23 (ZSCONS) #0: Wed Jul 24 00:20:39 JST 2013  
oshima@sweety:/export/current/src/sys/arch/x68k/compile/ZSCONS x68k

An userland (init) of NetBSD/x68k-current after about 2013-07-20 does not work.

1. install cd and install fd (INSTALL kernel and md(4) root)
  Boot up , INSTALL kernel output to console bootmesg, but system hang-up after 
output 'root file system type: ffs'

2. GENERIC (or ZSCONS: serial console GENERIC) kernel and installed userland
  Boot up, GENERIC kernel output to console bootmesg, but kernel panic at 
executing init(8) as follows:

  boot device: sd1
  root on sd1a dumps on sd1b
  root file system type: ffs
  panic: init died (signal 0, exit 1)
  Stopped in pid 1.1 (init) at    netbsd:cpu_Debugger+0x6:        unlk    a6
  db> bt
  db_panic(1a4dd80,bbccf30,1a4dd80,bbcce68,1981dc) + 6
  vpanic(251949,bbcce74,bbcceec,b8058,251949) + 120
  panic(251949,0,1,1a4dd80,bbccf30) + c
  exit1(1a3f560,100,bbccfb4,1a3f560,bbccf78) + 7f0
  sys_exit(1a3f560,bbccf30,bbccf70,12,0) + 30
  syscall_plain(1,1a3f560,bbccfb4,4016e64,ffefea78) + 92
  syscall(1) + 5c
  trap0() + e

  it seems that init(8) exists immediately.

3. 2013-07-23's GENERIC kernel and statically linked init
 Use 'boot -a', and enter '/rescue/init' when prompting 'init path', 
 After that, system is hang-up.
 It is the same  that the case 1. install-cd/fd.

4. 2013-07-17's install cd and install fd work well, and GENERIC kenel  with 
2013-07-17's  userland works well.

5. 2013-07-23's  GENERIC kernel and 2013-07-17's userland works well.

6. 2013-07-17's GENERIC kernel and 2013-07-23's userland
  Boot up, and panic when executing init(8).
  It is  the same that case 2.

I think that this is a problem of userland at 2013-07-23 (maybe after about 
In addition, m68k's build had broken from 2013-07-18 to 2013-07-19. so cannot 
test  during these days binary.

I tried this on NetBSD/x68k port only. but it will  occur on another m68k port, 
- boot up install FD or CD after 2013-07-20. it will hang-up.
- boot up GENERIC kernel and userland (this system is built and extracted to 
filesystem by another system) .
  it will panic.


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