tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 28806e4d9b97865b450d72156e9ad229f2067f0b commit: 050b2da268f8fc4f8123f6462c430a61547b2f7b arc: use FLATMEM with freeing of unused memory map instead of DISCONTIGMEM date: 3 months ago config: arc-randconfig-m031-20210311 (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: drivers/gpu/drm/etnaviv/etnaviv_dump.c:213 etnaviv_core_dump() warn: should '(((*pages++) - mem_map) + arch_pfn_offset) << 12' be a 64 bit type? vim +213 drivers/gpu/drm/etnaviv/etnaviv_dump.c a8c21a5451d831 The etnaviv authors 2015-12-03 112 9a1fdae5876016 Lucas Stach 2019-08-09 113 void etnaviv_core_dump(struct etnaviv_gem_submit *submit) a8c21a5451d831 The etnaviv authors 2015-12-03 114 { 9a1fdae5876016 Lucas Stach 2019-08-09 115 struct etnaviv_gpu *gpu = submit->gpu; a8c21a5451d831 The etnaviv authors 2015-12-03 116 struct core_dump_iterator iter; a8c21a5451d831 The etnaviv authors 2015-12-03 117 struct etnaviv_gem_object *obj; a8c21a5451d831 The etnaviv authors 2015-12-03 118 unsigned int n_obj, n_bomap_pages; a8c21a5451d831 The etnaviv authors 2015-12-03 119 size_t file_size, mmu_size; a8c21a5451d831 The etnaviv authors 2015-12-03 120 __le64 *bomap, *bomap_start; 9a1fdae5876016 Lucas Stach 2019-08-09 121 int i; a8c21a5451d831 The etnaviv authors 2015-12-03 122 6d7a20c0776036 Lucas Stach 2017-12-06 123 /* Only catch the first event, or when manually re-armed */ 6d7a20c0776036 Lucas Stach 2017-12-06 124 if (!etnaviv_dump_core) 6d7a20c0776036 Lucas Stach 2017-12-06 125 return; 6d7a20c0776036 Lucas Stach 2017-12-06 126 etnaviv_dump_core = false; 6d7a20c0776036 Lucas Stach 2017-12-06 127 27b67278e007b5 Lucas Stach 2019-07-05 128 mutex_lock(&gpu->mmu_context->lock); 1396500d673bd0 Lucas Stach 2019-05-21 129 27b67278e007b5 Lucas Stach 2019-07-05 130 mmu_size = etnaviv_iommu_dump_size(gpu->mmu_context); a8c21a5451d831 The etnaviv authors 2015-12-03 131 9a1fdae5876016 Lucas Stach 2019-08-09 132 /* We always dump registers, mmu, ring, hanging cmdbuf and end marker */ 9a1fdae5876016 Lucas Stach 2019-08-09 133 n_obj = 5; a8c21a5451d831 The etnaviv authors 2015-12-03 134 n_bomap_pages = 0; a8c21a5451d831 The etnaviv authors 2015-12-03 135 file_size = ARRAY_SIZE(etnaviv_dump_registers) * a8c21a5451d831 The etnaviv authors 2015-12-03 136 sizeof(struct etnaviv_dump_registers) + 9a1fdae5876016 Lucas Stach 2019-08-09 137 mmu_size + gpu->buffer.size + submit->cmdbuf.size; a8c21a5451d831 The etnaviv authors 2015-12-03 138 a8c21a5451d831 The etnaviv authors 2015-12-03 139 /* Add in the active buffer objects */ 9a1fdae5876016 Lucas Stach 2019-08-09 140 for (i = 0; i < submit->nr_bos; i++) { 9a1fdae5876016 Lucas Stach 2019-08-09 141 obj = submit->bos[i].obj; a8c21a5451d831 The etnaviv authors 2015-12-03 142 file_size += obj->base.size; a8c21a5451d831 The etnaviv authors 2015-12-03 143 n_bomap_pages += obj->base.size >> PAGE_SHIFT; a8c21a5451d831 The etnaviv authors 2015-12-03 144 n_obj++; a8c21a5451d831 The etnaviv authors 2015-12-03 145 } a8c21a5451d831 The etnaviv authors 2015-12-03 146 a8c21a5451d831 The etnaviv authors 2015-12-03 147 /* If we have any buffer objects, add a bomap object */ a8c21a5451d831 The etnaviv authors 2015-12-03 148 if (n_bomap_pages) { a8c21a5451d831 The etnaviv authors 2015-12-03 149 file_size += n_bomap_pages * sizeof(__le64); a8c21a5451d831 The etnaviv authors 2015-12-03 150 n_obj++; a8c21a5451d831 The etnaviv authors 2015-12-03 151 } a8c21a5451d831 The etnaviv authors 2015-12-03 152 a8c21a5451d831 The etnaviv authors 2015-12-03 153 /* Add the size of the headers */ a8c21a5451d831 The etnaviv authors 2015-12-03 154 file_size += sizeof(*iter.hdr) * n_obj; a8c21a5451d831 The etnaviv authors 2015-12-03 155 a8c21a5451d831 The etnaviv authors 2015-12-03 156 /* Allocate the file in vmalloc memory, it's likely to be big */ 88dca4ca5a93d2 Christoph Hellwig 2020-06-01 157 iter.start = __vmalloc(file_size, GFP_KERNEL | __GFP_NOWARN | 88dca4ca5a93d2 Christoph Hellwig 2020-06-01 158 __GFP_NORETRY); a8c21a5451d831 The etnaviv authors 2015-12-03 159 if (!iter.start) { 27b67278e007b5 Lucas Stach 2019-07-05 160 mutex_unlock(&gpu->mmu_context->lock); a8c21a5451d831 The etnaviv authors 2015-12-03 161 dev_warn(gpu->dev, "failed to allocate devcoredump file\n"); a8c21a5451d831 The etnaviv authors 2015-12-03 162 return; a8c21a5451d831 The etnaviv authors 2015-12-03 163 } a8c21a5451d831 The etnaviv authors 2015-12-03 164 a8c21a5451d831 The etnaviv authors 2015-12-03 165 /* Point the data member after the headers */ a8c21a5451d831 The etnaviv authors 2015-12-03 166 iter.hdr = iter.start; a8c21a5451d831 The etnaviv authors 2015-12-03 167 iter.data = &iter.hdr[n_obj]; a8c21a5451d831 The etnaviv authors 2015-12-03 168 a8c21a5451d831 The etnaviv authors 2015-12-03 169 memset(iter.hdr, 0, iter.data - iter.start); a8c21a5451d831 The etnaviv authors 2015-12-03 170 a8c21a5451d831 The etnaviv authors 2015-12-03 171 etnaviv_core_dump_registers(&iter, gpu); 27b67278e007b5 Lucas Stach 2019-07-05 172 etnaviv_core_dump_mmu(&iter, gpu->mmu_context, mmu_size); 2f9225dbc09abe Lucas Stach 2017-11-24 173 etnaviv_core_dump_mem(&iter, ETDUMP_BUF_RING, gpu->buffer.vaddr, 2f9225dbc09abe Lucas Stach 2017-11-24 174 gpu->buffer.size, db82a0435b8be3 Lucas Stach 2019-07-05 175 etnaviv_cmdbuf_get_va(&gpu->buffer, 17e4660ae3d7e1 Lucas Stach 2019-07-05 176 &gpu->mmu_context->cmdbuf_mapping)); 2f9225dbc09abe Lucas Stach 2017-11-24 177 2f9225dbc09abe Lucas Stach 2017-11-24 178 etnaviv_core_dump_mem(&iter, ETDUMP_BUF_CMD, 2f9225dbc09abe Lucas Stach 2017-11-24 179 submit->cmdbuf.vaddr, submit->cmdbuf.size, db82a0435b8be3 Lucas Stach 2019-07-05 180 etnaviv_cmdbuf_get_va(&submit->cmdbuf, 17e4660ae3d7e1 Lucas Stach 2019-07-05 181 &gpu->mmu_context->cmdbuf_mapping)); a8c21a5451d831 The etnaviv authors 2015-12-03 182 ca8cb69580236f Lucas Stach 2019-10-16 183 mutex_unlock(&gpu->mmu_context->lock); ca8cb69580236f Lucas Stach 2019-10-16 184 a8c21a5451d831 The etnaviv authors 2015-12-03 185 /* Reserve space for the bomap */ a8c21a5451d831 The etnaviv authors 2015-12-03 186 if (n_bomap_pages) { a8c21a5451d831 The etnaviv authors 2015-12-03 187 bomap_start = bomap = iter.data; a8c21a5451d831 The etnaviv authors 2015-12-03 188 memset(bomap, 0, sizeof(*bomap) * n_bomap_pages); a8c21a5451d831 The etnaviv authors 2015-12-03 189 etnaviv_core_dump_header(&iter, ETDUMP_BUF_BOMAP, a8c21a5451d831 The etnaviv authors 2015-12-03 190 bomap + n_bomap_pages); a8c21a5451d831 The etnaviv authors 2015-12-03 191 } else { a8c21a5451d831 The etnaviv authors 2015-12-03 192 /* Silence warning */ a8c21a5451d831 The etnaviv authors 2015-12-03 193 bomap_start = bomap = NULL; a8c21a5451d831 The etnaviv authors 2015-12-03 194 } a8c21a5451d831 The etnaviv authors 2015-12-03 195 9a1fdae5876016 Lucas Stach 2019-08-09 196 for (i = 0; i < submit->nr_bos; i++) { 9a1fdae5876016 Lucas Stach 2019-08-09 197 struct etnaviv_vram_mapping *vram; a8c21a5451d831 The etnaviv authors 2015-12-03 198 struct page **pages; a8c21a5451d831 The etnaviv authors 2015-12-03 199 void *vaddr; a8c21a5451d831 The etnaviv authors 2015-12-03 200 9a1fdae5876016 Lucas Stach 2019-08-09 201 obj = submit->bos[i].obj; 9a1fdae5876016 Lucas Stach 2019-08-09 202 vram = submit->bos[i].mapping; a8c21a5451d831 The etnaviv authors 2015-12-03 203 339073ef77e45e Lucas Stach 2016-01-22 204 mutex_lock(&obj->lock); a8c21a5451d831 The etnaviv authors 2015-12-03 205 pages = etnaviv_gem_get_pages(obj); 339073ef77e45e Lucas Stach 2016-01-22 206 mutex_unlock(&obj->lock); f8261c376e7f8c Dan Carpenter 2019-01-14 207 if (!IS_ERR(pages)) { a8c21a5451d831 The etnaviv authors 2015-12-03 208 int j; a8c21a5451d831 The etnaviv authors 2015-12-03 209 a8c21a5451d831 The etnaviv authors 2015-12-03 210 iter.hdr->data[0] = bomap - bomap_start; a8c21a5451d831 The etnaviv authors 2015-12-03 211 a8c21a5451d831 The etnaviv authors 2015-12-03 212 for (j = 0; j < obj->base.size >> PAGE_SHIFT; j++) a8c21a5451d831 The etnaviv authors 2015-12-03 @213 *bomap++ = cpu_to_le64(page_to_phys(*pages++)); :::::: The code at line 213 was first introduced by commit :::::: a8c21a5451d831e67b7a6fb910f9ca8bc7b43554 drm/etnaviv: add initial etnaviv DRM driver :::::: TO: The etnaviv authors <dri-devel(a)lists.freedesktop.org&gt; :::::: CC: Lucas Stach <l.stach(a)pengutronix.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org