如何释放 macOS 的锁？

可能是因为一次安装驱动程序时没有正常关闭，现在安装任何涉及内核扩展的程序都卡在「注册更新的组件」一步。查看安装日志停留在如下内容，怀疑为锁没能正常释放。

目前除了安装会卡住以外，系统亦不能正常关机，会停留在黑色屏幕+鼠标指针的界面（指针可以正常移动）。

尝试磁盘恢复等皆无效，联系客服表示需要等几天练习工程师。因此询问各位能否手动强制释放锁？

2018-07-19 16:22:04+08 xfox-rmbp installd[394]: PackageKit: kextcache -system-caches
2018-07-19 16:22:04+08 xfox-rmbp installd[394]: kextcache: Untrusted kexts are not allowed
2018-07-19 16:22:04+08 xfox-rmbp installd[394]: kextcache: Kext with invalid signature (-2147409622) denied: /Library/StagedExtensions/Library/Extensions/6A938CBE-8A74-44CE-BBDD-C6369BB60153.kext
2018-07-19 16:22:04+08 xfox-rmbp installd[394]: kextcache: Bundle (/Library/Extensions/FTDIKext.kext) failed to validate, deleting: /Library/StagedExtensions/Library/Extensions/6A938CBE-8A74-44CE-BBDD-C6369BB60153.kext
2018-07-19 16:22:04+08 xfox-rmbp installd[394]: kextcache: Unable to stage kext (/Library/Extensions/FTDIKext.kext) to secure location.
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Untrusted kexts are not allowed
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Kext with invalid signature (-2147409622) denied: /Library/StagedExtensions/Library/Extensions/94E90054-8B7E-42B9-A648-F8C500B7E469.kext
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Bundle (/Library/Extensions/FTDIKext.kext) failed to validate, deleting: /Library/StagedExtensions/Library/Extensions/94E90054-8B7E-42B9-A648-F8C500B7E469.kext
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Unable to stage kext (/Library/Extensions/FTDIKext.kext) to secure location.
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Untrusted kexts are not allowed
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Kext with invalid signature (-2147409622) denied: /Library/StagedExtensions/Library/Extensions/B8E34838-3ED4-45E0-A897-274F7EF64385.kext
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Bundle (/Library/Extensions/FTDIKext.kext) failed to validate, deleting: /Library/StagedExtensions/Library/Extensions/B8E34838-3ED4-45E0-A897-274F7EF64385.kext
2018-07-19 16:22:05+08 xfox-rmbp installd[394]: kextcache: Unable to stage kext (/Library/Extensions/FTDIKext.kext) to secure location.
2018-07-19 16:22:17+08 xfox-rmbp installd[394]: kextcache: kext file:///Library/StagedExtensions/System/Library/Extensions/BJUSBLoad.kext/ is in hash exception list, allowing to load
2018-07-19 16:22:29+08 xfox-rmbp installd[394]: PackageKit: kextcache -update-volume / -Installer
2018-07-19 16:22:29+08 xfox-rmbp installd[394]: kextcache: / locked; waiting for lock.