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kern/52117: ptrace(2) PTRACE_FORK fails on some platforms



>Number:         52117
>Category:       kern
>Synopsis:       ptrace(2) PTRACE_FORK fails on some platforms
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 28 02:10:00 +0000 2017
>Originator:     Kamil Rytarowski
>Release:        NetBSD 7.99.66 amd64
>Organization:
TNF
>Environment:
NetBSD chieftec 7.99.66 NetBSD 7.99.66 (GENERIC) #3: Tue Mar 28 02:01:26 CEST 2017  root@chieftec:/public/netbsd-root/sys/arch/amd64/compile/GENERIC amd64
>Description:
ptrace(2) PTRACE_FORK events don't work on some platforms, including: alpha, sparc, sparc64, evbarm.

It works on amd64, i386 and xen.
>How-To-Repeat:
tests/kernel/t_ptrace_wait tests siginfo5 and fork1
>Fix:
N/A



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