[Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen...

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399

--- Comment #57 from Mark Millard <markmi at dsl-only.net> ---
(In reply to Don Lewis from comment #56)

While I'm not claiming it is a fix to what
you are seeing there is a recent time
frame with a nasty error to avoid:

-r319722 through -r320651 (fixed by -r320652)
(Relevant for non-invariants kernel builds
of head.)

Another issue is the META_MODE error for
rebuilding the kernel:

-r320220 through -r320918 (fixed by -r320919)

Without this fix one should force complete
kernel rebuilds by deleting the relevant
directory tree first --or otherwise validate
that everything was rebuilt that should have
been rebuilt and dealing with anything that
did not get rebuilt.

(-r320570 fixes another error but it happens
that amd64 accidentally worked before the fix
while powerpc and possibly armv6/v7 did not.)

Avoiding these problem version ranges may help
getting extra problems in the mix for the
investigations.

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