reproduce: # apt-get install sparse # sparse version: v0.6.4-52-g1cf3d98c-dirty git remote add openeuler https://gitee.com/openeuler/kernel.git git fetch --no-tags openeuler OLK-5.10 git checkout 83b931be40b2829e20f38356509d8706ea6b6238 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 olddefconfig make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 SHELL=/bin/bash mm/