ACCESS DENIED open_wr: /dev/mem

from /var/tmp/portage/x11-libs/openmotif-2.3.3-r1/temp/build.log:
libtool: link: armv7a-hardfloat-linux-gnueabi-gcc -O2 -pipe -march=armv7-a -mfpu=vfpv3-d16 -mfloat-abi=hard -fno-strict-aliasing -Wall -g -fno-strict-aliasing -Wno-unused -Wno-comment -fno-tree-ter -Wl,-O1 -o .libs/wmldbcreate wmldbcreate.o  -Wl,--as-needed ../../lib/Xm/.libs/libXm.so -L/usr/lib -lXmu /usr/lib/libXt.so /usr/lib/libSM.so /usr/lib/libICE.so -luuid /usr/lib/libXp.so /usr/lib/libX11.so /usr/lib/libxcb.so /usr/lib/libXau.so /usr/lib/libXdmcp.so -ldl -lXext -ljpeg -lpng
./wmldbcreate -o motif.wmd
ACCESS DENIED  open_wr:      /dev/mem

from /var/tmp/portage/x11-libs/qt-meta-3.3.8d/temp/build.log:
make[3]: Entering directory `/var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/tools/designer/designer'
/var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/bin/uic -L /var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/plugins listboxeditor.ui -o listboxeditor.h
/var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/bin/uic -L /var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/plugins editfunctions.ui -o editfunctions.h
/var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/bin/uic -L /var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/plugins newform.ui -o newform.h
/var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/bin/uic -L /var/tmp/portage/x11-libs/qt-meta-3.3.8d/work/qt3/plugins listvieweditor.ui -o listvieweditor.h
ACCESS DENIED  open_wr:      /dev/mem
ACCESS DENIED  open_wr:      /dev/mem
ACCESS DENIED  open_wr:      /dev/mem
ACCESS DENIED  open_wr:      /dev/mem

i have to kill the locked process manually or emerge will wait forever.
one time i had this problem while emerging firefox.
it occurs in the install phase while zipping all jar data.
in that case i solved as follow:
1) emerging with a 2G swapfile
2) kill emerge when the ACCESS DENIED error occurs.
3) deactivate the swapfile
4) ebuild firefox*.ebuild install qmerge

this works only that time. maybe because the error happens in the install phase.

thanks!