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Re: WCHAN on R3000

To: Ralf Baechle <ralf@oss.sgi.com>
Subject: Re: WCHAN on R3000
From: Florian Lohoff <flo@rfc822.org>
Date: Sat, 29 Jan 2000 23:33:25 +0100
Cc: linux@cthulhu.engr.sgi.com, linux-mips@fnet.fr, linux-mips@vger.rutgers.edu
In-reply-to: <20000128212909.A11816@uni-koblenz.de>; from Ralf Baechle on Fri, Jan 28, 2000 at 09:29:09PM +0100
Organization: rfc822 - pure communication
References: <20000128212909.A11816@uni-koblenz.de>
Sender: flo@rfc822.org
On Fri, Jan 28, 2000 at 09:29:09PM +0100, Ralf Baechle wrote:
> I've got bugreports which looks like get_wchan() is buggy.  For my machines
> things look ok, so I assume only R3000 machines might be affected.  Anybody
> seen the message ``Bug in get_wchan''?  Does the WCHAN column of ``ps axl''
> look sane?

I think i already reported this ..

------[dmesg output]------------------------------
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Bug in get_wchan
Setting flush to zero for dpkg-source.
Unimplemented exception for insn 4620a0a4 at 0x0046f084 in dpkg-source.
Should send SIGFPE to dpkg-source
Setting flush to zero for dpkg-source.
Unimplemented exception for insn 4620a0a4 at 0x0046f084 in dpkg-source.
Should send SIGFPE to dpkg-source
Setting flush to zero for dpkg-source.
Unimplemented exception for insn 4620a0a4 at 0x0046f084 in dpkg-source.
Should send SIGFPE to dpkg-source
------------------------------------------

------------------------------------------
(root@repeat)~# cat /proc/cpuinfo 
cpu                     : MIPS
cpu model               : R4000SC V3.0
system type             : Digital DECstation 5000/1xx
BogoMIPS                : 49.81
byteorder               : little endian
unaligned accesses      : 0
wait instruction        : no
microsecond timers      : yes
extra interrupt vector  : no
hardware watchpoint     : yes
VCED exceptions         : 750604
VCEI exceptions         : 4523546
(root@repeat)~# uname -a
Linux repeat 2.3.21 #1 Tue Jan 4 18:39:20 GMT 2000 mips unknown
------------------------------------

I dont know if you call this "sane" ...

-------------------------------
(root@repeat)~# ps axl
Unknown HZ value! (0) Assume 100.
  F   UID   PID  PPID PRI  NI   VSZ  RSS  WCHAN STAT TTY        TIME COMMAND
  100     0     1     0   0   0  1244  472  5a748 S    ?          0:15 init
  040     0     2     1   0   0     0    0  5a748 SW   ?          0:01 [kswapd]
  040     0     3     1   0   0     0    0  5a748 SW   ?          0:01 [kflushd]
  140     0   105     1   0   0  3772  828  5a6e0 S    ?          0:24 
/usr/sbin/s
  140     0   113     1   0   0  1556  536  5a6e0 S    ?          0:04 syslogd
  140     0   120     1   0   0  1264  472  5ebb0 S    ?          0:00 klogd
  140     0   129     1   0   0  1524  468  5a6e0 S    ?          0:00 inetd
  140     0   142     1   0   0  1192  280  5a748 S    ?          0:12 update 
(bdf
  100     0   300     1   0   0  2612  720  5a748 S    ?          0:07 
/usr/lib/po
  100   502   302   300   0   0  2716  824  5a748 S    ?          0:00 qmgr -l 
-t 
  100     0 17438     1   0   0  1624  584  5a748 S    ?          0:00 
/sbin/mgett
  100   502 17439   300   0   0  2648  688  5a748 S    ?          0:00 pickup 
-l -
  140     0 17442   105   0   0  6080 1452  5a748 S    ?          0:01 
/usr/sbin/s
  100     0 17444 17442   0   0  3232 1324  64a2c S    ttyp0      0:01 -bash
  100     0 17452 17444   0   0  3028  728      - R    ttyp0      0:00 ps axl
-------------------------------

Flo
-- 
Florian Lohoff          flo@rfc822.org                  +49-5241-470566
"Technology is a constant battle between manufacturers producing bigger and
more idiot-proof systems and nature producing bigger and better idiots."

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