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Jamie Gritton authored
If a jail is created with jail_set(...JAIL_DYING), and it has a parent currently in a dying state, that will bring the parent jail back to life. Restrict that to require that the parent itself be explicitly brought back first, and not implicitly created along with the new child jail. Differential Revision: https://reviews.freebsd.org/D28515 (cherry picked from commit 0a2a96f3) MFC jail: Fix locking on an early jail_set error. I had locked allprison_lock without immediately setting PD_LIST_LOCKED. (cherry picked from commit 108a9384)
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