LKFT CI system noticed clang-15 build failures on x86_64 and i386.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

make --silent --keep-going --jobs=8 O=/home/tuxbuild/.cache/tuxmake/builds/1/build LLVM=1 LLVM_IAS=1 ARCH=x86_64 SRCARCH=x86 CROSS_COMPILE=x86_64-linux-gnu- 'HOSTCC=sccache clang' 'CC=sccache clang' mm/khugepaged.c:1428:45: error: variable 'pmd' is uninitialized when used here [-Werror,-Wuninitialized] page_table_check_pte_clear_range(mm, addr, pmd); ^~~ mm/khugepaged.c:1415:2: note: variable 'pmd' is declared here pmd_t pmd; ^ 1 error generated. make[3]: *** [scripts/Makefile.build:252: mm/khugepaged.o] Error 1

steps to reproduce: ------------------ # To install tuxmake on your system globally: # sudo pip3 install -U tuxmake # # See https://docs.tuxmake.org/ for complete documentation. # Original tuxmake command with fragments listed below. # tuxmake --runtime podman --target-arch x86_64 --toolchain clang-15 --kconfig defconfig --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-ke... --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-ke... --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-ke... --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-ke... --kconfig-add https://raw.githubusercontent.com/Linaro/meta-lkft/kirkstone/meta/recipes-ke... --kconfig-add CONFIG_IGB=y --kconfig-add CONFIG_UNWINDER_FRAME_POINTER=y LLVM=1 LLVM_IAS=1

Build results compare: https://qa-reports.linaro.org/lkft/linux-next-master-sanity/build/next-20221...

Build log link, https://builds.tuxbuild.com/2Hz2wymTKCJRrwkDTV5zeM4SkJ0/

-- Linaro LKFT https://lkft.linaro.org