amd64/148675: [panic] kernel panics - reboots

[avg at FreeBSD.org]

Synopsis: [panic] kernel panics - reboots

Responsible-Changed-From-To: freebsd-amd64->freebsd-bugs
Responsible-Changed-By: avg
Responsible-Changed-When: Fri Oct 8 09:34:55 UTC 2010
Responsible-Changed-Why: 
This seems like a know locking problem in ATA code that is not
specific to amd64 arch.  The problem is typically triggered by
command timeout.
To reporter: please try using ahci(4) driver and ATA_CAM kernel option.

http://www.freebsd.org/cgi/query-pr.cgi?pr=148675