/usr/src/blcr-0.8.2/cr_module/arch/ is in blcr-dkms 0.8.2-15ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/src/blcr-0.8.2/cr_module/arch/arm/
/usr/src/blcr-0.8.2/cr_module/arch/arm/cr_arch.h
/usr/src/blcr-0.8.2/cr_module/arch/i386/
/usr/src/blcr-0.8.2/cr_module/arch/i386/cr_arch.h
/usr/src/blcr-0.8.2/cr_module/arch/ppc/
/usr/src/blcr-0.8.2/cr_module/arch/ppc/cr_arch.h
/usr/src/blcr-0.8.2/cr_module/arch/ppc64/
/usr/src/blcr-0.8.2/cr_module/arch/ppc64/cr_arch.h
/usr/src/blcr-0.8.2/cr_module/arch/sparc/
/usr/src/blcr-0.8.2/cr_module/arch/sparc/cr_arch.h
/usr/src/blcr-0.8.2/cr_module/arch/sparc64/
/usr/src/blcr-0.8.2/cr_module/arch/sparc64/cr_arch.h
/usr/src/blcr-0.8.2/cr_module/arch/x86_64/
/usr/src/blcr-0.8.2/cr_module/arch/x86_64/cr_arch.h