Hi Maarten, I love your patch! Yet something to improve: [auto build test ERROR on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next v5.7-rc6 next-20200519] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Maarten-Lankhorst/Revert-drm-i91... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: x86_64-defconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project e6658079aca6d971b4e9d7137a3a2ecbc9c34aec) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): In file included from drivers/gpu/drm/i915/gt/intel_mocs.c:23: In file included from drivers/gpu/drm/i915/i915_drv.h:82: In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:16: In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9: In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17: WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv)); ^ include/linux/dma-resv.h:80:28: note: expanded from macro 'dma_resv_held' #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base) ^ 1 error generated. -- In file included from drivers/gpu/drm/i915/i915_vma.c:32: In file included from drivers/gpu/drm/i915/gt/intel_gt.h:10: In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:16: In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9: In file included from drivers/gpu/drm/i915/gt/uc/intel_guc.h:17: WARN_ON_ONCE(vma->resv && dma_resv_held(vma->resv)); ^ include/linux/dma-resv.h:80:28: note: expanded from macro 'dma_resv_held' #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base) ^ WARN_ON(!ww && vma->resv && dma_resv_held(vma->resv)); ^ include/linux/dma-resv.h:80:28: note: expanded from macro 'dma_resv_held' #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base) ^ 2 errors generated. vim +/lockdep_is_held +245 drivers/gpu/drm/i915/i915_vma.h 237 238 int __must_check 239 i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww, 240 u64 size, u64 alignment, u64 flags); 241 242 static inline int __must_check 243 i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags) 244 { 246 return i915_vma_pin_ww(vma, NULL, size, alignment, flags); 247 } 248 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org