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Date:      Tue, 08 Jun 2021 16:18:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 256439] kernel panic on FreeBSD 13.0-RELEASE
Message-ID:  <bug-256439-227-tRlegdzDMe@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-256439-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-256439-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256439

--- Comment #15 from Mark Johnston <markj@FreeBSD.org> ---
(In reply to crypt47 from comment #13)
On one host you'd run

$ <check out FreeBSD sources, use the releng/13.0 branch>
$ <edit sys/amd64/conf/GENERIC to enable INVARIANTS>
$ make buildkernel
$ tmpdir=3D$(mktemp -d)
# make installkernel DESTDIR=3D$tmpdir

Then copy over the ${tmpdir}/boot/kernel and
${tmpdir}/usr/lib/debug/boot/kernel directories to the affected host.=20
Beforehand, rename the existing ones to /boot/kernel.old and
/usr/lib/debug/boot/kernel.old.  This way you can still select the old kern=
el
from the loader.

There's no need to update userspace, just the kernel.

--=20
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