Guest: DragonFly dfbsd 6.5-DEVELOPMENT x86_64 (QEMU/KVM, 6 vcpu, 4GB)
Stock kernel #0:  X86_64_GENERIC (INVARIANTS ON)
   DragonFly dfbsd 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026
No-INV kernel:    DF2647_NOINV = X86_64_GENERIC minus "options INVARIANTS" minus "makeoptions DEBUG=-g"
   #0 Sat Aug 29 22:31:29 UTC 2026 (baseline) / rebuilt 22:47 & 23:07 & fix build ~23:12
   (verified: strings /boot/kernel/kernel | grep -c 'name_len < sizeof' == 0)
Fix kernel:       DF2647_NOINV + fix.diff (patch -p0 in /usr/src, applied cleanly, hunk @491)
vfs.usermount=0 (mounts root-gated); ioctls caps-gated SYSCAP_NOVFS_IOCTL
Toolchain: cc (gcc80), /sbin/hammer2, /sbin/newfs_hammer2, /usr/sbin/vnconfig