tree: git://git.infradead.org/users/hch/misc.git sanitize-vmalloc-api.2 head: f44e0a9207268d44a9f106376661ed3c3f764564 commit: eab29baeeab828a08269b7260d4f02462ba99fe3 [5/32] dma-mapping: use vmap insted of reimplementing it config: xtensa-randconfig-a001-20200414 (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout eab29baeeab828a08269b7260d4f02462ba99fe3 # save the attached .config to linux build tree GCC_VERSION=9.3.0 make.cross ARCH=xtensa 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 >>): kernel/dma/remap.c: In function 'dma_common_pages_remap': 32 | vaddr = vmap(pages, count, VM_DMA_COHERENT, prot); | ^~~~~ | d_count kernel/dma/remap.c:32:22: note: each undeclared identifier is reported only once for each function it appears in vim +32 kernel/dma/remap.c 22 23 /* 24 * Remaps an array of PAGE_SIZE pages into another vm_area. 25 * Cannot be used in non-sleeping contexts 26 */ 27 void *dma_common_pages_remap(struct page **pages, size_t size, 28 pgprot_t prot, const void *caller) 29 { 30 void *vaddr; 31 33 if (vaddr) 34 find_vm_area(vaddr)->pages = pages; 35 return vaddr; 36 } 37 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org