Hi Alan, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on drm-tip/drm-tip] [also build test WARNING on next-20211118] [cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next drm/drm-next tegra-drm/drm/tegra/for-next airlied/drm-next v5.16-rc2] [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/Alan-Previn/Add-GuC-Error-Captur... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: i386-debian-10.3 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/5dee80d5080bd11d7abcba6d1d0cf4425... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Alan-Previn/Add-GuC-Error-Capture-Support/20211123-070418 git checkout 5dee80d5080bd11d7abcba6d1d0cf442547105de # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 178 | void guc_capture_clear_ext_regs(struct __guc_mmio_reg_descr_group * lists) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/guc_capture_clear_ext_regs +178 drivers/gpu/drm/i915/gt/uc/intel_guc_capture.c 177 179 { 180 while(lists->list){ 181 if (lists->ext) { 182 kfree(lists->ext); 183 lists->ext = NULL; 184 } 185 ++lists; 186 } 187 return; 188 } 189 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org