kern/52019: ptrace(2) PT_SYSCALL generate SIGTRAP to the parent but returns SIGSTOP in PT_GET_SIGINFO

[n54%gmx.com@localhost]

>Number:         52019
>Category:       kern
>Synopsis:       ptrace(2) PT_SYSCALL generate SIGTRAP to the parent but returns SIGSTOP in PT_GET_SIGINFO
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Mar 01 08:00:00 +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:
ptrace(2) PT_SYSCALL generate SIGTRAP to the parent but returns SIGSTOP in PT_GET_SIGINFO
>How-To-Repeat:
Run syscall1 test in tests/kernel/t_ptrace_wait*
>Fix:
N/A