Hi, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on rdma/for-next] [also build test ERROR on linus/master v5.12-rc3 next-20210319] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/kaike-wan-intel-com/A-rendezvous... base: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next config: i386-randconfig-s002-20210318 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-277-gc089cd2d-dirty # https://github.com/0day-ci/linux/commit/96b4d25534a5c1ebaab65a35fd9cd2426... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review kaike-wan-intel-com/A-rendezvous-module/20210319-210005 git checkout 96b4d25534a5c1ebaab65a35fd9cd242613cd6d1 # 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; All errors (new ones prefixed by >>): In file included from <command-line>:32: 117 | size_t ulen; | ^~~~~~ 535 | uint64_t pad2[7]; | ^~~~~~~~ --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org