port-sparc/45319: building perl crashes sparc -current kernels

[martin%NetBSD.org@localhost]

>Number:         45319
>Category:       port-sparc
>Synopsis:       building perl crashes sparc -current kernels
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-sparc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Aug 31 20:40:00 +0000 2011
>Originator:     Martin Husemann
>Release:        NetBSD 5.99.55
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD sunset-glow.duskware.de 5.99.55 NetBSD 5.99.55 (GENERIC.MP) #29: 
Wed Aug 31 10:12:27 CEST 2011 
martin%night-porter.duskware.de@localhost:/usr/src/sys/arch/sparc/compile/GENERIC.MP
 sparc
Architecture: sparc
Machine: sparc
>Description:

Trying to build perl from pkgsrc reproducably kills a sparc -current
kernel:

LD_LIBRARY_PATH=/usr/pkgobj/lang/perl5/work/perl-5.14.1 gcc -Wl,-R/usr/pkg/lib 
-Wl,-rpath,/usr/pkg/lib -fstack-protector -L/usr/pkg/lib -o miniperl    gv.o 
toke.o perly.o pad.o regcomp.o dump.o util.o mg.o reentr.o mro.o keywords.o 
hv.o av.o run.o pp_hot.o sv.o pp.o scope.o pp_ctl.o pp_sys.o doop.o doio.o 
regexec.o utf8.o taint.o deb.o universal.o globals.o perlio.o perlapi.o 
numeric.o mathoms.o locale.o pp_pack.o pp_sort.o    miniperlmain.o opmini.o 
perlmini.o -lm -lcrypt -lpthread
LD_LIBRARY_PATH=/usr/pkgobj/lang/perl5/work/perl-5.14.1  ./miniperl -w -Ilib 
-MExporter -e '<?>' || /usr/bin/make minitest
panic: kernel diagnostic assertion "l->l_nopreempt == 0" failed: file 
"../../../../sys/userret.h", line 118
cpu1: Begin traceback...

>How-To-Repeat:
cd /usr/pkgsrc/devel/perl && make update

>Fix:
n/a