Re: FreeBSD 7 64 bits kernel crash debugging
- From: "Alexander Sack" <pisymbol@xxxxxxxxx>
- Date: Thu, 3 Jul 2008 10:52:12 -0400
On Wed, Jul 2, 2008 at 12:50 PM, Fernando Apesteguía
<fernando.apesteguia@xxxxxxxxx> wrote:
Hi all,
I'm experiencing several kernel crashes with the GENERIC kernel and
with custom kernels as well. One of my MP3 players seems to be
recognized, but if I disconnect it from the USB port (even without
mounting the device), I got a kernel crash.
I've tried to follow the instructions at
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html
I have dumpdev and dumpdir properly set to my swap partition (ad0s2b)
and to /var/crash.
However, during the next boot, I got a message that indicates it is
looking for a dump on such device but it couldn't find any.
How can I track this error?
Have you enabled at least KDB/DDB debugger support so you can look at
a stack trace ("t") and post this? This will at least give us/you
some idea on what is crashing...
Add minimally to your kernel build conf file:
options DDB
options KDB
Rebuild, reboot, and test. I'm not sure why a crash dump is not
working. Have you tried specifying your dump device in your kernel
config file?
Let us know,
-aps
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