Hi Stephen, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b791d1bdf9212d944d749a5c7ff6febdba241771 commit: bbd7ffdbef6888459f301c5889f3b14ada38b913 clk: Allow the common clk framework to be selectable date: 5 weeks ago config: m68k-randconfig-r025-20200612 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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 checkout bbd7ffdbef6888459f301c5889f3b14ada38b913 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 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 >>, old ones prefixed by <<): sound/soc/samsung/idma.c: In function 'idma_mmap': 250 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/pgprot_noncached +250 sound/soc/samsung/idma.c f09aecd50f39d3 Sangbeom Kim 2011-07-20 240 ba40ab6275173e Kuninori Morimoto 2019-10-02 241 static int idma_mmap(struct snd_soc_component *component, ba40ab6275173e Kuninori Morimoto 2019-10-02 242 struct snd_pcm_substream *substream, f09aecd50f39d3 Sangbeom Kim 2011-07-20 243 struct vm_area_struct *vma) f09aecd50f39d3 Sangbeom Kim 2011-07-20 244 { f09aecd50f39d3 Sangbeom Kim 2011-07-20 245 struct snd_pcm_runtime *runtime = substream->runtime; f09aecd50f39d3 Sangbeom Kim 2011-07-20 246 unsigned long size, offset; f09aecd50f39d3 Sangbeom Kim 2011-07-20 247 int ret; f09aecd50f39d3 Sangbeom Kim 2011-07-20 248 f09aecd50f39d3 Sangbeom Kim 2011-07-20 249 /* From snd_pcm_lib_mmap_iomem */ f09aecd50f39d3 Sangbeom Kim 2011-07-20 @250 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); f09aecd50f39d3 Sangbeom Kim 2011-07-20 251 size = vma->vm_end - vma->vm_start; f09aecd50f39d3 Sangbeom Kim 2011-07-20 252 offset = vma->vm_pgoff << PAGE_SHIFT; f09aecd50f39d3 Sangbeom Kim 2011-07-20 253 ret = io_remap_pfn_range(vma, vma->vm_start, f09aecd50f39d3 Sangbeom Kim 2011-07-20 254 (runtime->dma_addr + offset) >> PAGE_SHIFT, f09aecd50f39d3 Sangbeom Kim 2011-07-20 255 size, vma->vm_page_prot); f09aecd50f39d3 Sangbeom Kim 2011-07-20 256 f09aecd50f39d3 Sangbeom Kim 2011-07-20 257 return ret; f09aecd50f39d3 Sangbeom Kim 2011-07-20 258 } f09aecd50f39d3 Sangbeom Kim 2011-07-20 259 :::::: The code at line 250 was first introduced by commit :::::: f09aecd50f39d35372e551491d9f36ff0f51ee4d ASoC: SAMSUNG: Add I2S0 internal dma driver :::::: TO: Sangbeom Kim <sbkim73(a)samsung.com&gt; :::::: CC: Mark Brown <broonie(a)opensource.wolfsonmicro.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org