While building Linux next-20220207 for arm architecture the following error was noticed. make --silent --keep-going --jobs=8 \ ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- \ 'CC=sccache arm-linux-gnueabihf-gcc' \ 'HOSTCC=sccache gcc' \ vexpress_defconfig fs/proc/task_mmu.c: In function 'pagemap_pmd_range': fs/proc/task_mmu.c:1444:14: warning: unused variable 'migration' [-Wunused-variable] 1444 | bool migration = false; | ^~~~~~~~~ Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> Build log: https://builds.tuxbuild.com/24lg0EnsbEf6deWnMXwXiwh8oVi/ metadata: git_describe: next-20220207 git_repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git_short_log: b3c0a155ef77 (\"Add linux-next specific files for 20220207\") target_arch: arm toolchain: gcc-10 -- Linaro LKFT https://lkft.linaro.org