K 10 svn:author V 6 kevans K 8 svn:date V 27 2018-06-27T21:22:48.423222Z K 7 svn:log V 322 MFC r332395 (ian): Use explicit_bzero() when cleaning values out of the kenv Sometimes the values contain geli passphrases being communicated from loader(8) to the kernel, and some day the compiler may decide to start eliding calls to memset() for a pointer which is not dereferenced again before being passed to free(). END