ACPI panic on unplugging the power cord.

[Jung-uk Kim]

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On 2013-01-22 12:56:29 -0500, Pawel Jakub Dawidek wrote:
> I just upgraded to HEAD today and was wondering what will explode. 
> Now I know.
> 
> When I unplug power cord from my laptop, ACPI panics. Pictures
> here:
> 
> http://people.freebsd.org/~pjd/misc/acpi_panic_0.jpg 
> http://people.freebsd.org/~pjd/misc/acpi_panic_1.jpg
> 
> Let me know if you need more info.

Can you please try the attached patch?  It is also available from here:

http://people.freebsd.org/~jkim/utcache.diff

Please note the patch may or may not fix the problem but I think I
found an ancient bug. :-(

Thanks,

Jung-uk Kim
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