tree: https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.4.y-rt head: 5fbf1e70f11dba64cc05c9d85120a3aa7c67a4a2 commit: 2e15957cba4c069e9fe039111fb70565e95eab3b [284/325] drm/i915/gt: use a LOCAL_IRQ_LOCK in __timeline_mark_lock() config: x86_64-randconfig-a016-20200515 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 13d44b2a0c7ef404b13b16644765977cd5310fe2) 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 git checkout 2e15957cba4c069e9fe039111fb70565e95eab3b # 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 warnings (new ones prefixed by >>, old ones prefixed by <<): static DEFINE_LOCAL_IRQ_LOCK(timeline_lock); ^ 1 warning generated. vim +/timeline_lock +43 drivers/gpu/drm/i915/gt/intel_engine_pm.c 42 44 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org