CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: Arunpravin <arunpravin.paneersel...@amd.com> CC: 0day robot <l...@intel.com>
tree: https://github.com/0day-ci/linux/commits/Arunpravin/Enable-buddy-memory-manager-support/20210921-032602 head: 71b3775a5ce7b59e8c5292ae438284e8569c9e9f commit: 71b3775a5ce7b59e8c5292ae438284e8569c9e9f Add drm buddy manager support to amdgpu driver date: 8 weeks ago :::::: branch date: 8 weeks ago :::::: commit date: 8 weeks ago config: riscv-randconfig-c006-20210927 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/71b3775a5ce7b59e8c5292ae438284e8569c9e9f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Arunpravin/Enable-buddy-memory-manager-support/20210921-032602 git checkout 71b3775a5ce7b59e8c5292ae438284e8569c9e9f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> clang-analyzer warnings: (new ones prefixed by >>) ^ kernel/sched/topology.c:2218:3: note: Loop condition is true. Entering loop body for (sd = *per_cpu_ptr(d.sd, i); sd; sd = sd->parent) { ^ kernel/sched/topology.c:2220:8: note: Assuming the condition is false if (sd->flags & SD_OVERLAP) { ^~~~~~~~~~~~~~~~~~~~~~ kernel/sched/topology.c:2220:4: note: Taking false branch if (sd->flags & SD_OVERLAP) { ^ kernel/sched/topology.c:2224:9: note: Calling 'build_sched_groups' if (build_sched_groups(sd, i)) ^~~~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/topology.c:1194:37: note: 'last' initialized to a null pointer value struct sched_group *first = NULL, *last = NULL; ^~~~ kernel/sched/topology.c:1200:2: note: Assuming 'debug_locks' is 0 lockdep_assert_held(&sched_domains_mutex); ^ include/linux/lockdep.h:316:2: note: expanded from macro 'lockdep_assert_held' lockdep_assert(lockdep_is_held(l) != LOCK_STATE_NOT_HELD) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/lockdep.h:310:15: note: expanded from macro 'lockdep_assert' do { WARN_ON(debug_locks && !(cond)); } while (0) ^~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ kernel/sched/topology.c:1200:2: note: Left side of '&&' is false lockdep_assert_held(&sched_domains_mutex); ^ include/linux/lockdep.h:316:2: note: expanded from macro 'lockdep_assert_held' lockdep_assert(lockdep_is_held(l) != LOCK_STATE_NOT_HELD) ^ include/linux/lockdep.h:310:27: note: expanded from macro 'lockdep_assert' do { WARN_ON(debug_locks && !(cond)); } while (0) ^ kernel/sched/topology.c:1200:2: note: Taking false branch lockdep_assert_held(&sched_domains_mutex); ^ include/linux/lockdep.h:316:2: note: expanded from macro 'lockdep_assert_held' lockdep_assert(lockdep_is_held(l) != LOCK_STATE_NOT_HELD) ^ include/linux/lockdep.h:310:7: note: expanded from macro 'lockdep_assert' do { WARN_ON(debug_locks && !(cond)); } while (0) ^ include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON' if (unlikely(__ret_warn_on)) \ ^ kernel/sched/topology.c:1200:2: note: Loop condition is false. Exiting loop lockdep_assert_held(&sched_domains_mutex); ^ include/linux/lockdep.h:316:2: note: expanded from macro 'lockdep_assert_held' lockdep_assert(lockdep_is_held(l) != LOCK_STATE_NOT_HELD) ^ include/linux/lockdep.h:310:2: note: expanded from macro 'lockdep_assert' do { WARN_ON(debug_locks && !(cond)); } while (0) ^ kernel/sched/topology.c:1205:2: note: Assuming 'i' is >= 8 for_each_cpu_wrap(i, span, cpu) { ^ include/linux/cpumask.h:271:7: note: expanded from macro 'for_each_cpu_wrap' (cpu) < nr_cpumask_bits; \ ^~~~~~~~~~~~~~~~~~~~~~~ kernel/sched/topology.c:1205:2: note: Loop condition is false. Execution continues on line 1221 for_each_cpu_wrap(i, span, cpu) { ^ include/linux/cpumask.h:270:2: note: expanded from macro 'for_each_cpu_wrap' for ((cpu) = cpumask_next_wrap((start)-1, (mask), (start), false); \ ^ kernel/sched/topology.c:1221:13: note: Access to field 'next' results in a dereference of a null pointer (loaded from variable 'last') last->next = first; ~~~~ ^ Suppressed 17 warnings (15 in non-user code, 2 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 9 warnings generated. Suppressed 9 warnings (9 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 10 warnings generated. Suppressed 10 warnings (10 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 15 warnings generated. >> drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:236:9: warning: The left >> expression of the compound assignment is an uninitialized value. The >> computed value will also be garbage >> [clang-analyzer-core.uninitialized.Assign] usage += amdgpu_vram_mgr_vis_size(adev, block); ~~~~~ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:227:2: note: 'usage' declared without an initial value u64 usage; ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:229:6: note: Calling 'amdgpu_gmc_vram_full_visible' if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:286:10: note: Assuming field 'real_vram_size' is >= field 'visible_vram_size' WARN_ON(gmc->real_vram_size < gmc->visible_vram_size); ^ include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:286:2: note: Taking false branch WARN_ON(gmc->real_vram_size < gmc->visible_vram_size); ^ include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON' if (unlikely(__ret_warn_on)) \ ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:288:10: note: Assuming field 'real_vram_size' is not equal to field 'visible_vram_size' return (gmc->real_vram_size == gmc->visible_vram_size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:288:2: note: Returning zero, which participates in a condition later return (gmc->real_vram_size == gmc->visible_vram_size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:229:6: note: Returning from 'amdgpu_gmc_vram_full_visible' if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:229:2: note: Taking false branch if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:232:6: note: Assuming the condition is false if (res->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:232:2: note: Taking false branch if (res->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Left side of '&&' is false list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:13: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:495:61: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Taking false branch list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:13: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:302:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Loop condition is false. Exiting loop list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:13: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:2: note: expanded from macro '__compiletime_assert' do { \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Loop condition is true. Entering loop body list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:2: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:236:9: note: The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage usage += amdgpu_vram_mgr_vis_size(adev, block); ~~~~~ ^ >> drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:238:2: warning: Undefined or >> garbage value returned to caller >> [clang-analyzer-core.uninitialized.UndefReturn] return usage; ^ ~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:227:2: note: 'usage' declared without an initial value u64 usage; ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:229:6: note: Calling 'amdgpu_gmc_vram_full_visible' if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:286:10: note: Assuming field 'real_vram_size' is >= field 'visible_vram_size' WARN_ON(gmc->real_vram_size < gmc->visible_vram_size); ^ include/asm-generic/bug.h:121:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:286:2: note: Taking false branch WARN_ON(gmc->real_vram_size < gmc->visible_vram_size); ^ include/asm-generic/bug.h:122:2: note: expanded from macro 'WARN_ON' if (unlikely(__ret_warn_on)) \ ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:288:10: note: Assuming field 'real_vram_size' is not equal to field 'visible_vram_size' return (gmc->real_vram_size == gmc->visible_vram_size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_gmc.h:288:2: note: Returning zero, which participates in a condition later return (gmc->real_vram_size == gmc->visible_vram_size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:229:6: note: Returning from 'amdgpu_gmc_vram_full_visible' if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:229:2: note: Taking false branch if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:232:6: note: Assuming the condition is false if (res->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:232:2: note: Taking false branch if (res->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Left side of '&&' is false list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:13: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:495:61: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Taking false branch list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:13: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:302:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Loop condition is false. Exiting loop list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:13: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:2: note: expanded from macro '__compiletime_assert' do { \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:235:2: note: Loop condition is false. Execution continues on line 238 list_for_each_entry(block, &vnode->blocks, link) ^ include/linux/list.h:628:2: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:238:2: note: Undefined or garbage value returned to caller return usage; ^ ~~~~~ >> drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:590:9: warning: Branch >> condition evaluates to a garbage value >> [clang-analyzer-core.uninitialized.Branch] while (cursor.remaining) { ^~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:585:6: note: Assuming the condition is false if (!*sgt) ^~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:585:2: note: Taking false branch if (!*sgt) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:589:2: note: Calling 'amdgpu_res_first' amdgpu_res_first(res, offset, length, &cursor); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:68:6: note: Assuming 'res' is non-null if (!res || res->mem_type == TTM_PL_SYSTEM) { ^~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:68:6: note: Left side of '||' is false drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:68:14: note: Assuming field 'mem_type' is not equal to TTM_PL_SYSTEM if (!res || res->mem_type == TTM_PL_SYSTEM) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:68:2: note: Taking false branch if (!res || res->mem_type == TTM_PL_SYSTEM) { ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:77:9: note: Assuming the condition is false BUG_ON(start + size > res->num_pages << PAGE_SHIFT); ^ include/asm-generic/bug.h:65:45: note: expanded from macro 'BUG_ON' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ~~~~~~~~~^~~~~~~~~~ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:77:2: note: Taking false branch BUG_ON(start + size > res->num_pages << PAGE_SHIFT); ^ include/asm-generic/bug.h:65:32: note: expanded from macro 'BUG_ON' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:77:2: note: Loop condition is false. Exiting loop BUG_ON(start + size > res->num_pages << PAGE_SHIFT); ^ include/asm-generic/bug.h:65:27: note: expanded from macro 'BUG_ON' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:81:6: note: Assuming field 'mem_type' is not equal to TTM_PL_VRAM if (cur->mem_type == TTM_PL_VRAM) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:81:2: note: Taking false branch if (cur->mem_type == TTM_PL_VRAM) { ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:100:13: note: Assuming field 'mem_type' is not equal to TTM_PL_TT } else if (cur->mem_type == TTM_PL_TT) { ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:100:9: note: Taking false branch } else if (cur->mem_type == TTM_PL_TT) { ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:112:1: note: Returning without writing to 'cur->remaining', which participates in a condition later } ^ drivers/gpu/drm/amd/amdgpu/../amdgpu/amdgpu_res_cursor.h:112:1: note: Returning without writing to 'cur->remaining' drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:589:2: note: Returning from 'amdgpu_res_first' amdgpu_res_first(res, offset, length, &cursor); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:590:9: note: Branch condition evaluates to a garbage value while (cursor.remaining) { ^~~~~~~~~~~~~~~~ include/linux/log2.h:57:13: warning: The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'unsigned long' [clang-analyzer-core.UndefinedBinaryOperatorResult] return 1UL << fls_long(n - 1); ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:383:6: note: Assuming 'lpfn' is not equal to 0 if (!lpfn) ^~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:383:2: note: Taking false branch if (!lpfn) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:387:6: note: Assuming field 'type' is equal to ttm_bo_type_kernel if (tbo->type != ttm_bo_type_kernel) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:387:2: note: Taking false branch if (tbo->type != ttm_bo_type_kernel) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:392:6: note: Assuming the condition is false if (atomic64_add_return(mem_bytes, &mgr->usage) > max_bytes) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:392:2: note: Taking false branch if (atomic64_add_return(mem_bytes, &mgr->usage) > max_bytes) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:397:6: note: Assuming the condition is false if (place->flags & TTM_PL_FLAG_CONTIGUOUS) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:397:2: note: Taking false branch if (place->flags & TTM_PL_FLAG_CONTIGUOUS) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:406:20: note: Assuming '__UNIQUE_ID___x419' is <= '__UNIQUE_ID___y420' pages_per_node = max_t(uint32_t, pages_per_node, ^ include/linux/minmax.h:112:27: note: expanded from macro 'max_t' #define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp' __cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1733:6: note: Left side of '&&' is true if (!unlocked && !dma_fence_is_signaled(vm->last_unlocked)) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1733:2: note: Taking false branch if (!unlocked && !dma_fence_is_signaled(vm->last_unlocked)) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1742:6: note: Assuming 'r' is 0 if (r) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1742:2: note: Taking false branch if (r) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1745:19: note: 'pages_addr' is null amdgpu_res_first(pages_addr ? NULL : res, offset, ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1745:19: note: '?' condition is false drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1747:2: note: Loop condition is true. Entering loop body while (cursor.remaining) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1751:7: note: 'pages_addr' is null if (pages_addr) { ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1751:3: note: Taking false branch if (pages_addr) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1782:10: note: Taking true branch } else if (flags & (AMDGPU_PTE_VALID | AMDGPU_PTE_PRT)) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1790:7: note: Calling 'amdgpu_vm_update_ptes' r = amdgpu_vm_update_ptes(¶ms, start, tmp, addr, flags); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1538:2: note: Calling 'amdgpu_vm_fragment' amdgpu_vm_fragment(params, frag_start, end, flags, &frag, &frag_end); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1491:6: note: Assuming field 'asic_type' is >= CHIP_VEGA10 if (params->adev->asic_type < CHIP_VEGA10) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1491:2: note: Taking false branch if (params->adev->asic_type < CHIP_VEGA10) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1497:6: note: Assuming field 'pages_addr' is non-null if (params->pages_addr) { ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1497:2: note: Taking true branch if (params->pages_addr) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1500:3: note: Returning without writing to 'params->unlocked', which participates in a condition later return; ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1538:2: note: Returning from 'amdgpu_vm_fragment' amdgpu_vm_fragment(params, frag_start, end, flags, &frag, &frag_end); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1542:9: note: Assuming 'end' is > field 'pfn' while (cursor.pfn < end) { ^~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1542:2: note: Loop condition is true. Entering loop body while (cursor.pfn < end) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1547:7: note: Assuming field 'unlocked' is true if (!params->unlocked) { ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1547:3: note: Taking false branch if (!params->unlocked) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1557:11: note: Calling 'amdgpu_vm_level_shift' shift = amdgpu_vm_level_shift(adev, cursor.level); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:169:2: note: Control jumps to the 'default' case at line 177 switch (level) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:178:3: note: Returning the value 4294967295 return ~0; ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1557:11: note: Returning from 'amdgpu_vm_level_shift' shift = amdgpu_vm_level_shift(adev, cursor.level); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1557:3: note: The value 4294967295 is assigned to 'shift' shift = amdgpu_vm_level_shift(adev, cursor.level); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1559:15: note: Field 'unlocked' is true if (params->unlocked) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1559:3: note: Taking true branch if (params->unlocked) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1561:8: note: Assuming the condition is false if (amdgpu_vm_pt_descendant(adev, &cursor)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1561:4: note: Taking false branch if (amdgpu_vm_pt_descendant(adev, &cursor)) ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1588:7: note: Assuming 'pt' is non-null if (!pt) { ^~~ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1588:3: note: Taking false branch if (!pt) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1606:41: note: The result of the left shift is undefined due to shifting by '4294967295', which is greater or equal to the width of type 'uint64_t' incr = (uint64_t)AMDGPU_GPU_PAGE_SIZE << shift; ^ ~~~~~ >> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:1747:9: warning: Branch condition >> evaluates to a garbage value [clang-analyzer-core.uninitialized.Branch] while (cursor.remaining) { ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2196:2: note: Left side of '&&' is false list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { ^ include/linux/list.h:715:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:495:61: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2196:2: note: Taking false branch list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { ^ include/linux/list.h:715:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:302:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2196:2: note: Loop condition is false. Exiting loop list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { ^ include/linux/list.h:715:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:522:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:300:2: note: expanded from macro '__compiletime_assert' do { \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2196:2: note: Left side of '&&' is false list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { ^ include/linux/list.h:716:7: note: expanded from macro 'list_for_each_entry_safe' n = list_next_entry(pos, member); \ ^ include/linux/list.h:555:2: note: expanded from macro 'list_next_entry' list_entry((pos)->member.next, typeof(*(pos)), member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/kernel.h:495:61: note: expanded from macro 'container_of' BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2196:2: note: Taking false branch list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { ^ include/linux/list.h:716:7: note: expanded from macro 'list_for_each_entry_safe' n = list_next_entry(pos, member); \ ^ include/linux/list.h:555:2: note: expanded from macro 'list_next_entry' list_entry((pos)->member.next, typeof(*(pos)), member) ^ include/linux/list.h:511:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:322:2: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ^ include/linux/compiler_types.h:310:2: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ^ include/linux/compiler_types.h:302:3: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c:2196:2: note: Loop condition is false. Exiting loop list_for_each_entry_safe(bo_va, tmp, &vm->moved, base.vm_status) { vim +236 drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c 3c848bb38aca1f Christian König 2017-08-07 212 5e9244ff585239 Michel Dänzer 2018-06-12 213 /** ddc21af4d0f37f Michel Dänzer 2018-07-11 214 * amdgpu_vram_mgr_bo_visible_size - CPU visible BO size 5e9244ff585239 Michel Dänzer 2018-06-12 215 * 5e9244ff585239 Michel Dänzer 2018-06-12 216 * @bo: &amdgpu_bo buffer object (must be in VRAM) 5e9244ff585239 Michel Dänzer 2018-06-12 217 * 5e9244ff585239 Michel Dänzer 2018-06-12 218 * Returns: ddc21af4d0f37f Michel Dänzer 2018-07-11 219 * How much of the given &amdgpu_bo buffer object lies in CPU visible VRAM. 5e9244ff585239 Michel Dänzer 2018-06-12 220 */ ddc21af4d0f37f Michel Dänzer 2018-07-11 221 u64 amdgpu_vram_mgr_bo_visible_size(struct amdgpu_bo *bo) 5e9244ff585239 Michel Dänzer 2018-06-12 222 { 7303b39e46b2f5 Michel Dänzer 2018-06-14 223 struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev); cb1c81467af355 Christian König 2021-04-30 224 struct ttm_resource *res = bo->tbo.resource; 71b3775a5ce7b5 Arunpravin 2021-09-21 225 struct amdgpu_vram_mgr_node *vnode = to_amdgpu_vram_mgr_node(res); 71b3775a5ce7b5 Arunpravin 2021-09-21 226 struct drm_buddy_block *block; ddc21af4d0f37f Michel Dänzer 2018-07-11 227 u64 usage; 5e9244ff585239 Michel Dänzer 2018-06-12 228 9735bf1930e658 Michel Dänzer 2018-06-15 229 if (amdgpu_gmc_vram_full_visible(&adev->gmc)) ddc21af4d0f37f Michel Dänzer 2018-07-11 230 return amdgpu_bo_size(bo); 7303b39e46b2f5 Michel Dänzer 2018-06-14 231 cb1c81467af355 Christian König 2021-04-30 232 if (res->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT) ddc21af4d0f37f Michel Dänzer 2018-07-11 233 return 0; 7303b39e46b2f5 Michel Dänzer 2018-06-14 234 71b3775a5ce7b5 Arunpravin 2021-09-21 @235 list_for_each_entry(block, &vnode->blocks, link) 71b3775a5ce7b5 Arunpravin 2021-09-21 @236 usage += amdgpu_vram_mgr_vis_size(adev, block); 7303b39e46b2f5 Michel Dänzer 2018-06-14 237 7303b39e46b2f5 Michel Dänzer 2018-06-14 @238 return usage; 5e9244ff585239 Michel Dänzer 2018-06-12 239 } 5e9244ff585239 Michel Dänzer 2018-06-12 240 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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