Solaris 11.4 SRU90: Limiting signaling to all
Protecting you from sending signals to all processes!
kill -9 -1 can send a lot of processes to their untimely demise and can blow up your system. Since Solaris 11.4 SRU 90, this is blocked as the new process flag PRIV_PROC_SENDTOALL allowing sending a signal to all is not set by default. If you really need to send a signal to all processes, you can explicitly enable it with ppriv.
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