[Bug 276426] amd64: microcode update caused a page fault trying to send data to the logger

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 276426] amd64: microcode update caused a page fault trying to send data to the logger"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 18 Jan 2024 20:25:05 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276426

--- Comment #5 from Konstantin Belousov <kib@FreeBSD.org> ---
In the first message, the backtrace shows copyout_nosmap_std().

Anyway, do you observe a difference in the reported features before and
after ucode load?

Also, for the trap, disassemble the copyout function and show which
instruction faulted.

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