=== fix kernel build (applied to clean-source snapshot /usr/src) ===
cmd: cd /usr/src && patch -p1 < /root/df3091/fix.diff && make nativekernel KERNCONF=X86_64_GENERIC && make installkernel KERNCONF=X86_64_GENERIC
full build log lived at guest:/tmp/kbuild3091.log (wiped by the post-validation vm reset); result + timing as captured at the time:
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>>> Kernel build for X86_64_GENERIC completed on Mon Oct 12 12:18:35 UTC 2026
--------------------------------------------------------------
     1152.40 real       990.42 user       203.65 sys
INSTALL_RC=0 (kernel installed to /boot/kernel; rebooted into
 DragonFly 6.5-DEVELOPMENT #1: Mon Oct 12 12:07:23 UTC 2026)