[Bug 233414] [PowerPC64] OPTIONS DEBUG_MEMGUARD results in unbootable kernel

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233414

--- Comment #11 from Leandro Lupori <leandro.lupori at gmail.com> ---
(In reply to Mark Johnston from comment #10)

MemGuard seems to be very stable now, with several hours of build, guarding
different UMA bucket zones, with no panics.

Unfortunately, the original "memory modified after free" issue also stopped
happening, with memguard enabled.

Sean Bruno, maybe you could try this patch on your POWER8 machines? You seem to
be able to reproduce it more easily than I.

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