reproduce: # apt-get install sparse # sparse version: v0.6.4-66-g0196afe1 # https://github.com/intel-lab-lkp/linux/commit/135e6a76407e551751bb8c32e5ad60529597f905 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Sungwoo-Kim/Bluetooth-msft-fix-slab-use-after-free-in-msft_do_close/20240501-003554 git checkout 135e6a76407e551751bb8c32e5ad60529597f905 # 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 net/bluetooth/