=== Patched module test: DF-1634 (as root) ===
vm.sh status before: up
./dm_poc 1634: rc=-1 errno=45 (Operation not supported)
EXIT=0
vm.sh status after: up
dmesg: dm_target_crypt: iv_mode='BOGUS' unsupported / dm_target_crypt: ENOTSUP (no panic)
=== FIXED: clean ENOTSUP return, no panic, guest healthy ===