FreeBSD Developers' Handbook
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# 10.3 Debugging a Crash Dump with DDD

Examining a kernel crash dump with a graphical debugger like `ddd` is also possible (you will need to install the `devel/ddd` port in order to use the `ddd` debugger). Add the `-k` option to the `ddd` command line you would use normally. For example;

    # ddd --debugger kgdb kernel.debug /var/crash/vmcore.0

You should then be able to go about looking at the crash dump using `ddd`'s graphical interface.

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Debugging a Kernel Crash Dump with `kgdb` | Up | On-Line Kernel Debugging Using DDB