On Wed, Aug 9, 2023 at 2:31 AM Nick Desaulniers <ndesaulniers@xxxxxxxxxx> wrote: > > $ wget https://download.01.org/0day-ci/archive/20230808/202308081050.sZEw4cQ5-lkp@xxxxxxxxx/config > -O .config > $ make LLVM=1 ARCH=um -j128 arch/um/drivers/port_kern.o > $ make LLVM=1 ARCH=um -j128 arch/um/drivers/port_kern.o > arch/um/drivers/.hostaudio_kern.o.cmd:843: *** missing separator. Stop. > $ sed -n -e 842p -e 843p arch/um/drivers/.hostaudio_kern.o.cmd > $(deps_arch/um/drivers/hostaudio_kern.o): > o) > > Any idea if this is some form of malformed Makefile rule, or actually > a compiler bug generating these .cmd files? Presumably, this is the same symptom as Jiri Slaby reported some time ago. If you run a single build for arch/um/drivers/*, bad things may happen. He reported. This leads often to corrupted arch/um/arch/um/drivers/.ssl.o.cmd. https://lore.kernel.org/linux-kbuild/92f4dfe9-eb87-766b-271a-e57ada3a7dbd@xxxxxxxxxx/ A patch exists in ML. https://lore.kernel.org/all/20230721171857.3612639-2-masahiroy@xxxxxxxxxx/ I really want to stop using core-y or drivers-y in arch/*/Makefile. -- Best Regards Masahiro Yamada