reproduce: # apt-get install sparse # sparse version: v0.6.4-66-g0196afe1 # https://github.com/intel-lab-lkp/linux/commit/5737c7adc8314f11e458e3339fd89c44abe88c49 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Naohiro-Aota/btrfs-fix-error-propagation-of-split-bios/20241010-001915 git checkout 5737c7adc8314f11e458e3339fd89c44abe88c49 # 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=i386 olddefconfig make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=i386 SHELL=/bin/bash fs/btrfs/