CPP Wilson DSlash crashes with certain machine geom

[fwinter]

Standard x86 parscalar build:

cmake ${SRCROOT}/qmp
-DQMP_MPI=ON
-DCMAKE_INSTALL_PREFIX=${INSTALLROOT}/qmp

cmake ${SRCROOT}/qdpxx
-DQDP_PRECISION=single
-DCMAKE_INSTALL_PREFIX=${INSTALLROOT}/qdpxx
-DQMP_DIR=${INSTALLROOT}/qmp/lib/cmake/QMP

cmake ${SRCROOT}/chroma
-DChroma_ENABLE_CPP_WILSON_DSLASH=ON
-DQDPXX_DIR=${INSTALLROOT}/qdpxx/lib/cmake/QDPXX
-DQMP_DIR=${INSTALLROOT}/qmp/lib/cmake/QMP
-DCMAKE_INSTALL_PREFIX=${INSTALLROOT}/chroma

Modify hadspec.ini.xml to 16 16 16 32

On x86 laptop run:

mpirun -n 8 ~/git/package/x86/install/chroma/bin/chroma -i hadspec.ini.xml -geom 2 1 2 2

Creating qprop took 0.017302sec
Entering quarkProp4 - MRHS interface
[desktop:06691] *** Process received signal ***
[desktop:06691] Signal: Segmentation fault (11)
[desktop:06691] Signal code: (128)
[desktop:06691] Failing at address: (nil)

Other geoms work fine, tested: -geom 1 2 2 2 -geom 1 1 1 8, etc

Something not compatible with MRHS interface and CPP Wilson DSlash?