=== PATCHED KERNEL (#1) — same crafted image, same trigger ===
vnconfig -c -S labels -T vn1 /root/h2.img
mount_hammer2 /dev/vn1@BOOT /mnt/h2  -> MOUNT_OK
cat /mnt/h2/target.bin > /dev/null    -> READ_EXIT=1  (EIO, graceful)
uptime -> up 2 mins, load averages: 0.06, 0.04, 0.01   (guest ALIVE)
dmesg: hammer2_strategy_read_completion: unknown compression type 4

run #2 (determinism):
cat /mnt/h2/target.bin > /dev/null    -> READ_EXIT=1  (EIO, graceful)
uptime -> up 2 mins                    (guest ALIVE)

kern.version: DragonFly 6.5-DEVELOPMENT #1: Fri Jul 10 17:57:41 UTC 2026
sha256(/boot/kernel/kernel) = 2ff97b5e8409f7bd31cfeea72a0befc5486000c1473561b60ed47e58ce52d0c4