Date: Sat, 03 Mar 2001 18:32:15 -0500 From: Paul Halliday <dp@penix.org> To: hackers@freebsd.org Subject: freezing freebsd. Message-ID: <3AA17EFF.6A4F3B81@penix.org>
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While on the topic of crashing FreeBSD I would like to post this and see if I can get any input on it. Let's assume that someones configuration happens to contain something like this: sio0: configured irq 4 not in bitmap of probed irqs 0 sio0: at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 8250 This is easily achieved if you have eliminated some ports via your bios to juggle some irqs or, in the case that I first noticed it a bad serial port on my gateway. Anyway, [dp]-useless% cu -l cuaa0 Connected. <enter> <enter> <enter> ... and your system will be pretty much toast. I am not really sure what is happening here. There is no reboot, no crash, the system just hangs. SSH connection from another machine locks up and the machine seems to dissapear from the network. Power cycling seems the only recourse. I have tried this on two x86 machines runnning 4.2-stable and two alpha's running 4.2-stable. I know this is probably something stupid but, if someone could tell me why it does this, I would greatly appreciate it. thanks. -- Paul H. ============================================================================ Don't underestimate the power of stupid people in large groups. Brute force is the last resort of the incompetent. GPG Key fingerprint: 2D7C A7E2 DB1F EA5F 8C6F D5EC 3D39 F274 4AA3 E8B9 Web: http://www3.sympatico.ca/transmogrify Public Key available here: http://www3.sympatico.ca/transmogrify/dp.txt ============================================================================ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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