DF-5588 fix-validation kernel build log (verbatim excerpt of the guest-side
session; /tmp/kbuild.log could not be fetched afterwards because the same
hint left ACPICA's walk wedged before sshd -- see VERDICT.md section 6.
The full command line echoed in the transcript ran for 358 s and reported
zero errors; the completed-kernel banner and time output are verbatim below.)

guest$ cd /usr/src && patch -p0 < /tmp/fix.diff
Hmm...  Looks like a unified diff to me...
Patching file sys/platform/pc64/acpica/acpi_sdt.c using Plan A...
Hunk #1 succeeded at 68.
done

guest$ make -j8 nativekernel KERNCONF=X86_64_GENERIC
>>> Kernel build for X86_64_GENERIC completed on Thu Oct  8 07:55:51 UTC 2026
--------------------------------------------------------------
      358.21 real      1535.21 user      295.57 sys

guest$ make installkernel KERNCONF=X86_64_GENERIC
# /boot/kernel/kernel installed Oct  8 07:56 (patched)
# compiler: CCVER=gcc80 (seen in build transcript command lines)