1994-10-03 03:19:41 +00:00
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Kernel debugging FAQ
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for FreeBSD 1.1.5.1 and below
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1994-09-11 10:56:10 +00:00
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1994-10-03 03:19:41 +00:00
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Last modified: $Id: kernel-debug.FAQ,v 1.1 1994/09/11 10:56:06 jkh Exp $
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1994-09-11 10:56:10 +00:00
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Here are some instructions for getting kernel debugging working on
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a crash dump, it assumes that you have enough swap space for a crash
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dump.
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*** Start ***
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Config you're kernel using config -g
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Remove ${STRIP} -x $@; from the Makefile for the kernel so it doesn't
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get stripped.
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When the kernel's been built make a copy of it, say 386BSD.debug, and
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then run strip -x on the original. Install the original as normal.
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Now, after a crash dump, go to /sys/compile/WHATEVER and run kgdb. From kgdb
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do:
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symbol-file 386BSD.debug
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exec-file /var/crash/system.0
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core-file /var/crash/ram.0
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and viola, you can debug the crash dump using the kernel sources just like
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you can for any other program.
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Paul Richards, FreeBSD core team member.
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