Hi Nick, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 11030fe96b57ad843518b0e9430f3cd4b3610ce2 commit: 9f4069b055d1508c833115df7493b6e0001e5c9b drm/i915: re-disable -Wframe-address date: 3 months ago config: x86_64-randconfig-r031-20200809 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0b90a08f7722980f6074c6eada8022242408cdb4) reproduce (this is a W=1 build): 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 git checkout 9f4069b055d1508c833115df7493b6e0001e5c9b # 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: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): static inline void debug_fence_free(struct i915_sw_fence *fence) ^ 1 error generated. -- static inline bool is_nonpriv_flags_valid(u32 flags) ^ 1 error generated. -- static inline void debug_active_fini(struct i915_active *ref) { } ^ 1 error generated. -- static inline int rq_prio(const struct i915_request *rq) ^ 1 error generated. -- static inline int get_pt_type(int type) ^ static inline void ppgtt_set_guest_root_entry(struct intel_vgpu_mm *mm, ^ 2 errors generated. vim +/debug_fence_free +111 drivers/gpu/drm/i915/i915_sw_fence.c fc1584059d6c43 Chris Wilson 2016-11-25 110 fc1584059d6c43 Chris Wilson 2016-11-25 @111 static inline void debug_fence_free(struct i915_sw_fence *fence) fc1584059d6c43 Chris Wilson 2016-11-25 112 { fc1584059d6c43 Chris Wilson 2016-11-25 113 } fc1584059d6c43 Chris Wilson 2016-11-25 114 :::::: The code at line 111 was first introduced by commit :::::: fc1584059d6c438b1febafa1c207ae1d3c6643e8 drm/i915: Integrate i915_sw_fence with debugobjects :::::: TO: Chris Wilson <chris(a)chris-wilson.co.uk&gt; :::::: CC: Chris Wilson <chris(a)chris-wilson.co.uk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org