(I'm only guessing that debugging threaded programs is the reason)

After stepping through a threaded program I can hit the KASSERT in
line 550 of kern_sig.c: KASSERT(sigismember(&sp->sp_set, signo));
The trace is: lwp_userret -> issignal -> sigget.

Anyone seeing similar issues?  kernel is from Monday's sources.

-- 
Antti Kantee <pooka@iki.fi>                     Of course he runs NetBSD
http://www.iki.fi/pooka/                          http://www.NetBSD.org/
    "la qualité la plus indispensable du cuisinier est l'exactitude"