uid changes automatially!

[Martin Egloff]

Hi folks

On two of our Suns, 3/75 diskless and 3/52 (with / , /tmp and /pub on a
local SCSI disk) all running OS3.2 for over two years now with no
problems, start doing strange things:

While doing normal work on it, mostly editing and debugging with dbx under
Suntools, it suddenly (and silently) changes the UID to some other user or
even root. Files which might then be created belong to a not existing user
(our highest usernumber is 9000):

ls -l:
-rw-r--r--  1 20568       24235 Feb 17 22:29 dbeditor.mpp
-rw-r--r--  1 20568        2645 Feb 17 22:27 lop

Logging out works but logging in again crashes the machine with this
message:

  login: 
  trap address 0x8, pid 14020, pc = f01e66c, sr = 2000, stkfmt b, context 1
  Bus Error Reg 80<INVALID>
  data fault address ec75058 faultc 0 faultb 0 dfault 1 rw 1 size 0 fcode 5
  KERNEL MODE
  page map 23000000
  D0-D7  1 ffffffff 3 0 0 0 3e8 3e8
  A0-A7  f1a6078 ffff888e 0 effffcc f077d96 ec75058 ffff875e ffff875a
  Begin traceback...fp = ffff875e, sp = ffff875a
  Called from f01e6e8, fp=ffff876a, args=ffffffff ffff8782 f01e45e f1a6078
  Called from f01e45e, fp=ffff8782, args=f1a6078 0 0 ffff87b6
  Called from f04a274, fp=ffff87aa, args=ffff886a effffdc 0 21b9c
  Called from f0044cc, fp=effff34, args=7f 0 0 3
  End traceback...
  panic: Bus error
  syncing disks... 6 6 5 2 done

  dumping to dev 701, offset 31858
  dump succeeded

and reboots again. This happens about twice a week.  There was nothing
that changed on the network configuration and we didn't install new
software either.

I would be glad if someone out there has an idea what this is!
Please send any answers to 
   ...!mcvax!cernvax!unizh!olsen!martin

Thanks in advance...

Martin Egloff