FIX BUILD — guest /usr/src after: patch -p1 < fix.diff (usb_pf.c x2 hunks + bpf.c typo hunk)
$ make -j6 nativekernel KERNCONF=X86_64_GENERIC && make installkernel
>>> Kernel build for X86_64_GENERIC completed on Wed Oct  7 00:25:14 UTC 2026
>>> Kernel install for X86_64_GENERIC completed on Wed Oct  7 00:26:15 UTC 2026
(full log: 3756+ object compilations, zero errors; kernel sources: /usr/src clean snapshot + fix.diff)