Kernel panic when kldunload acpi_video

John Baldwin jhb at
Wed Jan 16 14:25:44 PST 2008

On Wednesday 16 January 2008 09:31:55 am John Baldwin wrote:
> On Tuesday 15 January 2008 06:54:53 pm Norberto Meijome wrote:
> > I have crash dumps, but unfortunately, i wiped the kernel.debug after
> > starting a full clean rebuild of kernel + world for today's changes. 
> Please get a crash dump with matching kernel.debug and acpi_video.ko.debug.
> Then grab and source it while running kgdb.
> You can use the 'kldload' command to generate output that you can pass to
> asf(8) to generate a file you can source to import the symbols into kgdb
> for the kernel module.  Then you can get a stack trace which will help
> track down the problem.

Actually, you can simplify this some because you can make asf work directly
on a crash dump though it may take some work to make it find your kld

John Baldwin

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