tree: git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y head: d19d8f329cd20e1e2d14f30ed08d6a1164e6e9d9 commit: 56bc20e5fc64d55c194475692ee60893a3f452a5 [4522/9999] perf/x86/lbr: Remove cpuc->lbr_xsave allocation from atomic context config: x86_64-randconfig-a004-20220117 (https://download.01.org/0day-ci/archive/20220122/202201221945.Jw5HI2LX-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d4baf3b1322b84816aa623d8e8cb45a49cb68b84) 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 git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git git fetch --no-tags ti ti-rt-linux-5.10.y git checkout 56bc20e5fc64d55c194475692ee60893a3f452a5 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the ti/ti-rt-linux-5.10.y HEAD d19d8f329cd20e1e2d14f30ed08d6a1164e6e9d9 builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): kmem_cache = x86_get_pmu(cpu)->task_ctx_cache; ~~~~~~~~~~~ ^~~ arch/x86/events/intel/../perf_event.h:900:13: note: 'x86_get_pmu' declared here struct pmu *x86_get_pmu(void); ^ 1 error generated. vim +729 arch/x86/events/intel/lbr.c 717 718 void reserve_lbr_buffers(void) 719 { 720 struct kmem_cache *kmem_cache; 721 struct cpu_hw_events *cpuc; 722 int cpu; 723 724 if (!static_cpu_has(X86_FEATURE_ARCH_LBR)) 725 return; 726 727 for_each_possible_cpu(cpu) { 728 cpuc = per_cpu_ptr(&cpu_hw_events, cpu); 730 if (!kmem_cache || cpuc->lbr_xsave) 731 continue; 732 733 cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache, GFP_KERNEL, 734 cpu_to_node(cpu)); 735 } 736 } 737 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org