tree: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git ceph-netfs-lib head: 1147b94f2c8d567a46fd3550db71b7e2d3c7bb3d commit: a4c56bdbfcd408a31457f881a270b6826bd80636 [4/6] ceph: convert readpage to fscache read helper config: i386-randconfig-s002-20210217 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git/commit/... git remote add jlayton https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git git fetch --no-tags jlayton ceph-netfs-lib git checkout a4c56bdbfcd408a31457f881a270b6826bd80636 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org