sa_mask allows KILL/STOP to be blocked

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Alexander V. Lukyanov (lav@yars.free.net)
Sat, 11 Apr 1998 15:57:16 +0400

Looks like handle_signal and do_sigaction do not clear KILL/STOP signals
in sa_mask, which allows to block those signals.

I verified it on alpha, but the code for i386 looks basically the same.

Alexander.

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