K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2009-10-30T10:10:39.594757Z
K 7
svn:log
V 409
Trapsignal() and postsig() call kern_sigprocmask() with both process
lock and curproc->p_sigacts->ps_mtx. Reschedule_signals may need to have
ps_mtx locked to decide and wakeup a thread, causing recursion on the
mutex.

Inform kern_sigprocmask() and reschedule_signals() about lock state
of the ps_mtx by new flag SIGPROCMASK_PS_LOCKED to avoid recursion.

Reported and tested by:	keramida
MFC after:	1 month

END