Date: Sat, 7 Nov 1998 00:58:14 -0500 From: Christopher Masto <chris@netmonger.net> To: current@FreeBSD.ORG Subject: Lock up on accessing sio? Message-ID: <19981107005814.A8603@netmonger.net>
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A friend of mine has had a 486 running 2.2.5-STABLE as a router and
fax server for over a year. Tonight we decided to upgrade it to
3.0-CURRENT as a prelude to experimenting with ipfw. Unfortunately,
now the machine locks up tight whenever we access the modem. This
machine has an interal el-cheapo of some kind (probably an old USR
14.4).. the internal serial port has been turned off in the BIOS. It
worked perfectly under the 2.2.5-STABLE it had (I don't know the exact
date offhand), but now even a "cu -l /dev/cuaa0" will instantly freeze
the machine. DDB is compiled in, but Ctrl-Alt-Esc does nothing. It
is very much buried under other equipment, and it got late, so I
haven't had a chance to try turning the serial port back on to see if
I can get a stack trace. I'm hoping that maybe this sounds familiar
to someone.
As another data point, we had previously tried putting 2.2.7-STABLE on
it, and it was locking up right after booting.. it's possible that the
faxgetty in /etc/ttys is what was doing it. The kernel on it now is
from yesterday afternoon's cvsup, but we see the same lockup with the
3.0-RELEASE kernel.
Here are the boot messages:
Copyright (c) 1992-1998 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.0-CURRENT #0: Fri Nov 6 21:17:05 EST 1998
chris@lion-around.at.yiff.net:/usr/local/usr-src/sys/compile/ITGATE
Timecounter "i8254" frequency 1193182 Hz
CPU: AMD Enhanced Am486DX4 Write-Back (486-class CPU)
Origin = "AuthenticAMD" Id = 0x494 Stepping=4
Features=0x1<FPU>
real memory = 16777216 (16384K bytes)
config> quit
avail memory = 14184448 (13852K bytes)
Preloaded a.out kernel "kernel" at 0xf0267000.
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
ed0 at 0x300-0x31f irq 3 on isa
ed0: address 00:60:67:00:2a:35, type NE2000 (16 bit)
ed1 at 0x280-0x29f irq 5 on isa
ed1: address 00:60:67:00:2a:3d, type NE2000 (16 bit)
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
sio0: type 8250
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <SAMSUNG SHD-30560A (APRO-5) SSI>
wd0: 534MB (1094688 sectors), 1086 cyls, 16 heads, 63 S/T, 512 B/S
npx0 on motherboard
npx0: INT 16 interface
WARNING: / was not properly dismounted
The "configured irq 4 not in bitmap" line also appeared when booting
2.2.5.. I don't think it's significant.
Any ideas? I've got to go away for the weekend, but when I get back,
I'll be able to pull the machine out of the pile and start
experimenting.
--
Christopher Masto Director of Operations S NetMonger Communications
chris@netmonger.net info@netmonger.net SSS http://www.netmonger.net
\_/
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