tree: https://github.com/intel/linux-intel-lts.git 4.9/yocto/base head: 2a51382b3fd2c499ef6a2229389aa5c06481d1cf commit: 6b6bf4cfb24e321833e1b8267d18440cd4c328d9 [4/9] Merge tag 'v4.9.220' into lts2016/yocto config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0 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 6b6bf4cfb24e321833e1b8267d18440cd4c328d9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross ARCH=arm 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 >>): drivers/gpu/drm/etnaviv/etnaviv_mmu.c: In function 'etnaviv_iommu_map_gem': mmu->need_flush = true; ^~ drivers/gpu/drm/etnaviv/etnaviv_mmu.c: In function 'etnaviv_iommu_unmap_gem': drivers/gpu/drm/etnaviv/etnaviv_mmu.c:268:5: error: 'struct etnaviv_iommu' has no member named 'need_flush' mmu->need_flush = true; ^~ # https://github.com/intel/linux-intel-lts/commit/6b6bf4cfb24e321833e1b8267... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 4.9/yocto/base git checkout 6b6bf4cfb24e321833e1b8267d18440cd4c328d9 vim +250 drivers/gpu/drm/etnaviv/etnaviv_mmu.c 90969c9aa97700 Lucas Stach 2016-08-19 203 90969c9aa97700 Lucas Stach 2016-08-19 204 int etnaviv_iommu_map_gem(struct etnaviv_iommu *mmu, 90969c9aa97700 Lucas Stach 2016-08-19 205 struct etnaviv_gem_object *etnaviv_obj, u32 memory_base, 90969c9aa97700 Lucas Stach 2016-08-19 206 struct etnaviv_vram_mapping *mapping) 90969c9aa97700 Lucas Stach 2016-08-19 207 { 90969c9aa97700 Lucas Stach 2016-08-19 208 struct sg_table *sgt = etnaviv_obj->sgt; 90969c9aa97700 Lucas Stach 2016-08-19 209 struct drm_mm_node *node; 90969c9aa97700 Lucas Stach 2016-08-19 210 int ret; 90969c9aa97700 Lucas Stach 2016-08-19 211 90969c9aa97700 Lucas Stach 2016-08-19 212 lockdep_assert_held(&etnaviv_obj->lock); 90969c9aa97700 Lucas Stach 2016-08-19 213 90969c9aa97700 Lucas Stach 2016-08-19 214 mutex_lock(&mmu->lock); 90969c9aa97700 Lucas Stach 2016-08-19 215 90969c9aa97700 Lucas Stach 2016-08-19 216 /* v1 MMU can optimize single entry (contiguous) scatterlists */ 90969c9aa97700 Lucas Stach 2016-08-19 217 if (mmu->version == ETNAVIV_IOMMU_V1 && 90969c9aa97700 Lucas Stach 2016-08-19 218 sgt->nents == 1 && !(etnaviv_obj->flags & ETNA_BO_FORCE_MMU)) { 90969c9aa97700 Lucas Stach 2016-08-19 219 u32 iova; 90969c9aa97700 Lucas Stach 2016-08-19 220 90969c9aa97700 Lucas Stach 2016-08-19 221 iova = sg_dma_address(sgt->sgl) - memory_base; 90969c9aa97700 Lucas Stach 2016-08-19 222 if (iova < 0x80000000 - sg_dma_len(sgt->sgl)) { 90969c9aa97700 Lucas Stach 2016-08-19 223 mapping->iova = iova; 90969c9aa97700 Lucas Stach 2016-08-19 224 list_add_tail(&mapping->mmu_node, &mmu->mappings); 90969c9aa97700 Lucas Stach 2016-08-19 225 mutex_unlock(&mmu->lock); 90969c9aa97700 Lucas Stach 2016-08-19 226 return 0; 90969c9aa97700 Lucas Stach 2016-08-19 227 } 90969c9aa97700 Lucas Stach 2016-08-19 228 } 90969c9aa97700 Lucas Stach 2016-08-19 229 90969c9aa97700 Lucas Stach 2016-08-19 230 node = &mapping->vram_node; 90969c9aa97700 Lucas Stach 2016-08-19 231 90969c9aa97700 Lucas Stach 2016-08-19 232 ret = etnaviv_iommu_find_iova(mmu, node, etnaviv_obj->base.size); a8c21a5451d831 The etnaviv authors 2015-12-03 233 if (ret < 0) { a8c21a5451d831 The etnaviv authors 2015-12-03 234 mutex_unlock(&mmu->lock); a8c21a5451d831 The etnaviv authors 2015-12-03 235 return ret; a8c21a5451d831 The etnaviv authors 2015-12-03 236 } a8c21a5451d831 The etnaviv authors 2015-12-03 237 a8c21a5451d831 The etnaviv authors 2015-12-03 238 mmu->last_iova = node->start + etnaviv_obj->base.size; a8c21a5451d831 The etnaviv authors 2015-12-03 239 mapping->iova = node->start; a8c21a5451d831 The etnaviv authors 2015-12-03 240 ret = etnaviv_iommu_map(mmu, node->start, sgt, etnaviv_obj->base.size, a8c21a5451d831 The etnaviv authors 2015-12-03 241 IOMMU_READ | IOMMU_WRITE); a8c21a5451d831 The etnaviv authors 2015-12-03 242 a8c21a5451d831 The etnaviv authors 2015-12-03 243 if (ret < 0) { a8c21a5451d831 The etnaviv authors 2015-12-03 244 drm_mm_remove_node(node); a8c21a5451d831 The etnaviv authors 2015-12-03 245 mutex_unlock(&mmu->lock); a8c21a5451d831 The etnaviv authors 2015-12-03 246 return ret; a8c21a5451d831 The etnaviv authors 2015-12-03 247 } a8c21a5451d831 The etnaviv authors 2015-12-03 248 a8c21a5451d831 The etnaviv authors 2015-12-03 249 list_add_tail(&mapping->mmu_node, &mmu->mappings); 7a8d0aae150b2a Lucas Stach 2017-01-17 @250 mmu->need_flush = true; a8c21a5451d831 The etnaviv authors 2015-12-03 251 mutex_unlock(&mmu->lock); a8c21a5451d831 The etnaviv authors 2015-12-03 252 a8c21a5451d831 The etnaviv authors 2015-12-03 253 return ret; a8c21a5451d831 The etnaviv authors 2015-12-03 254 } a8c21a5451d831 The etnaviv authors 2015-12-03 255 :::::: The code at line 250 was first introduced by commit :::::: 7a8d0aae150b2a86614c4f849413422536bcc53e drm/etnaviv: always flush MMU TLBs on map/unmap :::::: TO: Lucas Stach <l.stach(a)pengutronix.de&gt; :::::: CC: Fei Yang <fei.yang(a)intel.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org