Kernel Panic Identification HELP!

Question

Can someone please tell me what the following kernel panic is related to and possibly how to correct?
panic(cpu 0 caller 0x002BB700): OSMetaClassBase::_RESERVEDOSMetaClassBase6 called
Latest stack backtrace for cpu 0:
Backtrace:
0x00095718 0x00095C30 0x0002683C 0x002BB700 0x002BB550 0x00568914 0x00543250 0x002BF6F4
0x002BF4BC 0x002BFF24 0x002C0590 0x000A9894
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOHIDFamily(1.4.4)@0x540000
Proceeding back via exception chain:
Exception state (sv=0x32E1BA00)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Answer 1

Hi, Scott.
The line
panic(cpu 0 caller 0x002BB700): OSMetaClassBase::_RESERVEDOSMetaClassBase6 called
appears to indicate that a kernel extension or device driver called a function that is unavailable in the version of Mac OS X you are using.
The Backtrace indicates
Kernel loadable modules in backtrace (with dependencies):
com.apple.iokit.IOHIDFamily(1.4.4)@0x540000
which is related to Human Interface Devices (the "HID" in IOHIDFamily) implying things like keyboards, mice, tablets, other pointing devices, etc.
I interpret those two items as follows: if you're using a third-party keyboard, mouse, tablet, or similar HID this may imply that any vendor-provided software you installed for such is either back-level (and hence incompatible with your version of Mac OS X), or corrupted. If you installed vendor-provided software to use such a device, check the vendor's Web site for updates.
Beyond that, see my "Resolving Kernel Panics" FAQ. This FAQ includes step-by-step instructions for identifying and resolving some of the most common causes of kernel panics.
My FAQ is a roadmap: start at the beginning and work through to the end, following the instruction in the order specified, including the "If all else fails..." section if a cause or resolution is not found in an earlier troubleshooting step therein.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
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