From: Bruce Harada <bruce@ask.ne.jp>
To: Brian Horton <go_gators@mail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: how to debug a deadlock'ed kernel?
Date: Wed, 12 Dec 2001 04:58:23 +0900 [thread overview]
Message-ID: <20011212045823.0bf53af9.bruce@ask.ne.jp> (raw)
In-Reply-To: <3C166540.DC0BDBEE@mail.com>
In-Reply-To: <3C166540.DC0BDBEE@mail.com>
On Tue, 11 Dec 2001 13:57:52 -0600
Brian Horton <go_gators@mail.com> wrote:
> Anyone got any good tips on how to debug a SMP system that is locked up
> in a deadlock situation in the kernel? I'm working on a kernel module,
> and after some number of hours of stress testing, the box locks up. None
> of the sysrq options show anything on the display, though the reBoot
> option does reboot the system. RedHat 6.2 and its 2.2.14 kernel. Doesn't
> hang for me on 2.4, so I need to debug it here...
>
> Any hints?
Try using a serial console (activate it in your kernel config and hook up
another PC to the serial port - if it's oopsing, you should see the oops over
the serial line.)
Also, I believe you can use kdb via serial as well (although I've never tried).
Bruce
next prev parent reply other threads:[~2001-12-11 19:58 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-11 19:57 how to debug a deadlock'ed kernel? Brian Horton
2001-12-11 19:58 ` Bruce Harada [this message]
2001-12-11 21:15 ` Oliver Xymoron
2001-12-11 21:41 ` george anzinger
2001-12-11 23:41 ` Brian Horton
2001-12-12 0:25 ` Oliver Xymoron
2001-12-14 21:35 ` Brian Horton
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