DF-2745 / kill-proof.txt
$ kill -9 1678 1765; sleep 2 $ ps -ax -o pid,stat,wchan,comm | grep peers 1678 D0E exit1 peersrace 1765 D1E exit1 peersrace (SIGKILL delivered to both wedged leaders; both remain in D state, wchan=exit1 - unkillable)
$ kill -9 1678 1765; sleep 2 $ ps -ax -o pid,stat,wchan,comm | grep peers 1678 D0E exit1 peersrace 1765 D1E exit1 peersrace (SIGKILL delivered to both wedged leaders; both remain in D state, wchan=exit1 - unkillable)