kern/51980: crash in filt_sordetach

[martin%NetBSD.org@localhost]

>Number:         51980
>Category:       kern
>Synopsis:       crash in filt_sordetach
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 17 19:00:00 +0000 2017
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.60
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-owl.duskware.de 7.99.60 NetBSD 7.99.60 (NIGHT-OWL) #483: Fri Feb 17 13:49:36 CET 2017 martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/amd64/compile/NIGHT-OWL amd64
Architecture: x86_64
Machine: amd64
>Description:

While running a build.sh (with high enough -j to load it pretty good)
my machine paniced:
(manual transscript)

kernel: page fault trap, code=8
Stopped in pid 171.2 (xfsettingsd) at netbsd:filt_sordetach+0x3f movq 8(%rdx),%rax

backtrace:

filt_sordetach()+0x3f
knote_detach()+0x70
kevent1()+0x686
sys____kevent50+0x33


>How-To-Repeat:
n/a

>Fix:
n/a