tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10 head: ae25dd46c5c2fecb4868af3a91418dea519deac9 commit: ae25dd46c5c2fecb4868af3a91418dea519deac9 [1/1] CHROMIUM: Import latest evdi driver config: i386-randconfig-s002-20211113 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.10 git checkout ae25dd46c5c2fecb4868af3a91418dea519deac9 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/evdi/ 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 >>) drivers/gpu/drm/evdi/evdi_painter.c:965:49: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *edid_data @@ got unsigned char const *[noderef] edid @@ drivers/gpu/drm/evdi/evdi_painter.c:965:49: sparse: expected void const [noderef] __user *edid_data drivers/gpu/drm/evdi/evdi_painter.c:965:49: sparse: got unsigned char const *[noderef] edid drivers/gpu/drm/evdi/evdi_painter.c:1333:54: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got unsigned char const *[noderef] buffer @@ drivers/gpu/drm/evdi/evdi_painter.c:1333:54: sparse: expected void const [noderef] __user *from drivers/gpu/drm/evdi/evdi_painter.c:1333:54: sparse: got unsigned char const *[noderef] buffer drivers/gpu/drm/evdi/evdi_painter.c:965:46: sparse: sparse: dereference of noderef expression drivers/gpu/drm/evdi/evdi_painter.c:1333:51: sparse: sparse: dereference of noderef expression drivers/gpu/drm/evdi/evdi_painter.c:1333:51: sparse: sparse: dereference of noderef expression 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