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Date:      Sun, 6 Jun 1999 21:08:56 +0200
From:      Jeroen Ruigrok van der Werven <asmodai@wxs.nl>
To:        FreeBSD Current <current@freebsd.org>
Subject:   weird crash
Message-ID:  <19990606210856.D16752@daemon.ninth-circle.org>

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Hi,

just today I got this error, never had it before in all those
months I have been tracking CURRENT now.

Jun  6 17:15:26 daemon /kernel: sio0: 65 more tty-level buffer overflows
(total 65)
Jun  6 17:15:28 daemon /kernel: sio0: 131 more tty-level buffer overflows
(total 196)
Jun  6 17:15:29 daemon /kernel: sio0: 38 more tty-level buffer overflows
(total 234)

until I interrupted it with CTRL-ALT-ESC to drop into DDB.

This is some info I got from DDB:

[ please bear with me if I didn't get all I need, but it's the first 
`crash' I intercepted and I think I got all the relevant data, comments
appreciated though ]

db>trace
Debugger(0c255518) at Debugger+0x37
scgetc(c0294020,2,124bca,c0294020,850ff2c) at scgetc+ox5ec
sckdbevent(c0294020,0,0,124bca,850ff2c) at sckbdevent+0x1c4
atkbd_intr(c0294020,0,bfbfd4bc,c0211c92,c06773f0) at atkbd_intr+ox1f
atkbd_isa_intr(c06773f0,0,2f,2f,2f) at atkbd_isa_intr+0x1b
Xresume1() at Xresume+0x2b

--- interrupt, eip=0x28078509, esp=0xc5b6dfe0, ebp=0xbfbfd4bc ---

I also have results from show registers, print, show page if those are
deemed interesting.

What I was able to glance from ps what that the 0xc5b6dfe0 range lay in
an xterm memory range... I am not 100% sure about this though.

some relevant system information:

[asmodai@daemon] (81) $ uname -a
FreeBSD daemon.ninth-circle.org 4.0-CURRENT
FreeBSD 4.0-CURRENT #3: Thu Jun  3 16:59:10 CEST 1999
asmodai@daemon.ninth-circle.org:/work/FreeBSD/src/sys/compile/DAEMON  i386

Jun  2 10:57:38 daemon /kernel: isab0: <Intel 82371SB PCI to ISA bridge>
at device 7.0 on pci0
Jun  2 10:57:38 daemon /kernel: atkbdc0: <keyboard controller (i8042)> at
port 0x60-0x6f on isa0
Jun  2 10:57:38 daemon /kernel: atkbd0: <AT Keyboard> irq 1 on atkbdc0
Jun  2 10:57:38 daemon /kernel: atkbd: the current kbd controller command
byte 0047
Jun  2 10:57:38 daemon /kernel: atkbd: keyboard ID 0x41ab (2)
Jun  2 10:57:38 daemon /kernel: kbdc: RESET_KBD return code:00fa
Jun  2 10:57:38 daemon /kernel: kbdc: RESET_KBD status:00aa
Jun  2 10:57:38 daemon /kernel: kbd0: atkbd0, AT 101/102 (2), config:0x0,
flags:0x3d0000
Jun  2 10:57:38 daemon /kernel: vga0: <Generic ISA VGA> on isa0
Jun  2 10:57:38 daemon /kernel: fb0: vga0, vga, type:VGA (5), flags:0x7007f
Jun  2 10:57:38 daemon /kernel: fb0: port:0x3b0-0x3df, crtc:0x3d4,
mem:0xa0000 0x20000
Jun  2 10:57:38 daemon /kernel: fb0: init mode:24, bios mode:3,
current mode:24
Jun  2 10:57:38 daemon /kernel: fb0: window:0xc00b8000 size:32k gran:32k,
buf:0x0 size:0k
Jun  2 10:57:38 daemon /kernel: VGA parameters upon power-up
Jun  2 10:57:38 daemon /kernel: 50 18 10 00 00 00 03 00 02 67 5f 4f 50 82 55 81 
Jun  2 10:57:38 daemon /kernel: bf 1f 00 4f 0e 0f 00 00 07 80 9c 8e 8f 28 1f 96 
Jun  2 10:57:38 daemon /kernel: b9 a3 ff 00 01 02 03 04 05 14 07 38 39 3a 3b 3c 
Jun  2 10:57:38 daemon /kernel: 3d 3e 3f 0c 00 0f 08 00 00 00 00 00 10 0e 00 ff 
Jun  2 10:57:38 daemon /kernel: VGA parameters in BIOS for mode 24
Jun  2 10:57:38 daemon /kernel: 50 18 10 00 10 00 03 00 02 67 5f 4f 50 82 55 81 
Jun  2 10:57:38 daemon /kernel: bf 1f 00 4f 0d 0e 00 00 00 00 9c 8e 8f 28 1f 96 
Jun  2 10:57:38 daemon /kernel: b9 a3 ff 00 01 02 03 04 05 14 07 38 39 3a 3b 3c 
Jun  2 10:57:38 daemon /kernel: 3d 3e 3f 0c 00 0f 08 00 00 00 00 00 10 0e 00 ff 
Jun  2 10:57:38 daemon /kernel: EGA/VGA parameters to be used for mode 24
Jun  2 10:57:38 daemon /kernel: 50 18 10 00 10 00 03 00 02 67 5f 4f 50 82 55 81 
Jun  2 10:57:38 daemon /kernel: bf 1f 00 4f 0d 0e 00 00 00 00 9c 8e 8f 28 1f 96 
Jun  2 10:57:38 daemon /kernel: b9 a3 ff 00 01 02 03 04 05 14 07 38 39 3a 3b 3c 
Jun  2 10:57:38 daemon /kernel: 3d 3e 3f 0c 00 0f 08 00 00 00 00 00 10 0e 00 ff 
Jun  2 10:57:38 daemon /kernel: sc0: <System console> on isa0
Jun  2 10:57:38 daemon /kernel: sc0: fb0 kbd0
Jun  2 10:57:38 daemon /kernel: sc0: VGA color <16 virtual consoles, flags=0x0>
Jun  2 10:57:38 daemon /kernel: sio0: irq maps: 0x41 0x51 0x41 0x41
Jun  2 10:57:38 daemon /kernel: sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on
isa0
Jun  2 10:57:38 daemon /kernel: sio0: type 16550A
Jun  2 10:57:38 daemon /kernel: sio1: irq maps: 0x41 0x49 0x41 0x41
Jun  2 10:57:38 daemon /kernel: sio1 at port 0x2f8-0x2ff irq 3 on isa0
Jun  2 10:57:38 daemon /kernel: sio1: type 16550A

The system itself is a simple DFI-based motherboard with Intel Pentium 200 MMX
and 96 MB RAM.
The keyboard is not one of them ps/2's, but a the older type (I don't think
that DIN is the correct name though).
the device on sio0 is my serial MouseMan:

controller      isa0
controller      atkbdc0 at isa? port IO_KBD
device          atkbd0  at atkbdc? irq 1
device          vga0    at isa? port ? conflicts
device          sc0     at isa?

If any more information is required, please tell me and I will see if I can
dig it up.

'gards,

-- 
Jeroen Ruigrok van der Werven                asmodai(at)wxs.nl
        The FreeBSD Programmer's Documentation Project 
Network/Security Specialist      <http://home.wxs.nl/~asmodai>;
*BSD: Accept no limitations...


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