[Bug 253687] [hwpmc] kernel panic when listing available hardware performance counters

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253687

--- Comment #5 from Mitchell Horne <mhorne@freebsd.org> ---
(In reply to Zhenlei Huang from comment #3)

Hi,

I suspect hwpmc has some kind of misidentification or misconfiguration based on
the specific processor model. Could you provide the output of the following?

# sysctl kern.hwpmc.cpuid

and

# cpucontrol -i 0xA /dev/cpuctl0

You may need to kldload cpuctl for the latter. Thanks.

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