Hi "Adrián, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm/drm-next] [also build test ERROR on linus/master v5.19-rc3 next-20220620] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Adri-n-Larumbe/devcoredump-support-for-Panfrost-GPU-driver/20220621-103431 base: git://anongit.freedesktop.org/drm/drm drm-next config: s390-buildonly-randconfig-r006-20220620 (https://download.01.org/0day-ci/archive/20220621/202206211507.zzo0qSdL-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project af6d2a0b6825e71965f3e2701a63c239fa0ad70f) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/297bd4948ab1f4eeb78389d57adc1edc819cb6f2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Adri-n-Larumbe/devcoredump-support-for-Panfrost-GPU-driver/20220621-103431 git checkout 297bd4948ab1f4eeb78389d57adc1edc819cb6f2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/gpu/drm/panfrost/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/panfrost/panfrost_dump.c:6: In file included from include/linux/devcoredump.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from drivers/gpu/drm/panfrost/panfrost_dump.c:6: In file included from include/linux/devcoredump.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from drivers/gpu/drm/panfrost/panfrost_dump.c:6: In file included from include/linux/devcoredump.h:12: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> drivers/gpu/drm/panfrost/panfrost_dump.c:115:15: error: no member named 'file_priv' in 'struct panfrost_job' as_nr = job->file_priv->mmu->as; ~~~ ^ >> drivers/gpu/drm/panfrost/panfrost_dump.c:225:27: warning: implicit conversion from '__le64' (aka 'unsigned long long') to '__le32' (aka 'unsigned int') changes value from 72057594037927936 to 0 [-Wconstant-conversion] iter.hdr->bomap.valid = cpu_to_le64(1); ~ ^~~~~~~~~~~~~~ include/linux/byteorder/generic.h:86:21: note: expanded from macro 'cpu_to_le64' #define cpu_to_le64 __cpu_to_le64 ^ include/uapi/linux/byteorder/big_endian.h:32:27: note: expanded from macro '__cpu_to_le64' #define __cpu_to_le64(x) ((__force __le64)__swab64((x))) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 13 warnings and 1 error generated. vim +115 drivers/gpu/drm/panfrost/panfrost_dump.c 102 103 void panfrost_core_dump(struct panfrost_job *job) 104 { 105 struct panfrost_device *pfdev = job->pfdev; 106 struct panfrost_dump_iterator iter; 107 struct drm_gem_object *dbo; 108 unsigned int n_obj, n_bomap_pages; 109 __le64 *bomap, *bomap_start; 110 size_t file_size; 111 u32 as_nr; 112 int slot; 113 int ret, i; 114 > 115 as_nr = job->file_priv->mmu->as; 116 slot = panfrost_job_get_slot(job); 117 slot = slot ? slot : 0; 118 119 /* Only catch the first event, or when manually re-armed */ 120 if (!panfrost_dump_core) 121 return; 122 panfrost_dump_core = false; 123 124 /* At least, we dump registers and end marker */ 125 n_obj = 2; 126 n_bomap_pages = 0; 127 file_size = ARRAY_SIZE(panfrost_dump_registers) * 128 sizeof(struct panfrost_dump_registers); 129 130 /* Add in the active buffer objects */ 131 for (i = 0; i < job->bo_count; i++) { 132 dbo = job->bos[i]; 133 file_size += dbo->size; 134 n_bomap_pages += dbo->size >> PAGE_SHIFT; 135 n_obj++; 136 } 137 138 /* If we have any buffer objects, add a bomap object */ 139 if (n_bomap_pages) { 140 file_size += n_bomap_pages * sizeof(*bomap); 141 n_obj++; 142 } 143 144 /* Add the size of the headers */ 145 file_size += sizeof(*iter.hdr) * n_obj; 146 147 /* Allocate the file in vmalloc memory, it's likely to be big */ 148 iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN | 149 __GFP_NORETRY); 150 if (!iter.start) { 151 dev_warn(pfdev->dev, "failed to allocate devcoredump file\n"); 152 return; 153 } 154 155 /* Point the data member after the headers */ 156 iter.hdr = iter.start; 157 iter.data = &iter.hdr[n_obj]; 158 159 memset(iter.hdr, 0, iter.data - iter.start); 160 161 /* 162 * For now, we write the job identifier in the register dump header, 163 * so that we can decode the entire dump later with pandecode 164 */ 165 iter.hdr->reghdr.jc = cpu_to_le64(job->jc); 166 iter.hdr->reghdr.version = cpu_to_le32(PANFROSTDUMP_VERSION_1); 167 iter.hdr->reghdr.gpu_id = cpu_to_le32(pfdev->features.id); 168 iter.hdr->reghdr.nbos = cpu_to_le64(job->bo_count); 169 170 panfrost_core_dump_registers(&iter, pfdev, as_nr, slot); 171 172 /* Reserve space for the bomap */ 173 if (job->bo_count) { 174 bomap_start = bomap = iter.data; 175 memset(bomap, 0, sizeof(*bomap) * n_bomap_pages); 176 panfrost_core_dump_header(&iter, PANFROSTDUMP_BUF_BOMAP, 177 bomap + n_bomap_pages); 178 } 179 180 for (i = 0; i < job->bo_count; i++) { 181 struct iosys_map map; 182 struct panfrost_gem_mapping *mapping; 183 struct panfrost_gem_object *bo; 184 struct sg_page_iter page_iter; 185 void *vaddr; 186 187 bo = to_panfrost_bo(job->bos[i]); 188 mapping = job->mappings[i]; 189 190 if (!bo->base.sgt) { 191 dev_err(pfdev->dev, "Panfrost Dump: BO has no sgt, cannot dump\n"); 192 iter.hdr->bomap.valid = 0; 193 goto dump_header; 194 } 195 196 ret = drm_gem_shmem_vmap(&bo->base, &map); 197 if (ret) { 198 dev_err(pfdev->dev, "Panfrost Dump: couldn't map Buffer Object\n"); 199 iter.hdr->bomap.valid = 0; 200 goto dump_header; 201 } 202 203 WARN_ON(!mapping->active); 204 205 iter.hdr->bomap.data[0] = cpu_to_le32((bomap - bomap_start)); 206 207 for_each_sgtable_page(bo->base.sgt, &page_iter, 0) { 208 struct page *page = sg_page_iter_page(&page_iter); 209 210 if (!IS_ERR(page)) 211 *bomap++ = cpu_to_le64(page_to_phys(page)); 212 else { 213 dev_err(pfdev->dev, "Panfrost Dump: wrong page\n"); 214 *bomap++ = ~cpu_to_le64(0); 215 } 216 } 217 218 iter.hdr->bomap.iova = cpu_to_le64(mapping->mmnode.start << PAGE_SHIFT); 219 220 vaddr = map.vaddr; 221 memcpy(iter.data, vaddr, bo->base.base.size); 222 223 drm_gem_shmem_vunmap(&bo->base, &map); 224 > 225 iter.hdr->bomap.valid = cpu_to_le64(1); 226 -- 0-DAY CI Kernel Test Service https://01.org/lkp
