kern/52012: PT_SYSCALL does not stop on syscall entry

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>Number:         52012
>Category:       kern
>Synopsis:       PT_SYSCALL does not stop on syscall entry
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 28 13:25:00 +0000 2017
>Originator:     Kamil Rytarowski
>Release:        NetBSD 7.99.63 amd64
>Organization:
TNF
>Environment:
NetBSD chieftec 7.99.63 NetBSD 7.99.63 (GENERIC) #8: Tue Feb 28 11:56:53 CET 2017  root@chieftec:/public/netbsd-root/sys/arch/amd64/compile/GENERIC amd64
>Description:
PT_SYSCALL does not stop on syscall entry.
>How-To-Repeat:
cd /usr/tests/kernel/
./t_ptrace_wait syscallemu1
>Fix:
N/A