GSD-2022-1005995 dm thin: fix use-after-free crash in dm_sm_register_threshold_callback

dm thin: fix use-after-free crash in dmsmregisterthresholdcallback This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.211 by commit...