CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org BCC: l...@intel.com CC: linux-ker...@vger.kernel.org TO: Chen Yu <yu.c.c...@intel.com> CC: "Rafael J. Wysocki" <r...@rjwysocki.net>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 3e732ebf7316ac83e8562db7e64cc68aec390a18 commit: b0013e037a8b07772c74ce24f1ae4743b30fc3cf ACPI: Introduce Platform Firmware Runtime Telemetry driver date: 3 months ago :::::: branch date: 2 days ago :::::: commit date: 3 months ago config: x86_64-randconfig-c007-20220404 (https://download.01.org/0day-ci/archive/20220407/202204072043.hq2zqj94-...@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c4a1b07d0979e7ff20d7d541af666d822d66b566) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b0013e037a8b07772c74ce24f1ae4743b30fc3cf git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b0013e037a8b07772c74ce24f1ae4743b30fc3cf # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>) include/linux/jump_label.h:420:2: note: expanded from macro 'static_key_enabled' static_key_count((struct static_key *)x) > 0; \ ^ include/linux/compiler.h:80:39: note: expanded from macro 'unlikely_notrace' # define unlikely_notrace(x) unlikely(x) ~~~~~~~~~^~ include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ drivers/iommu/dma-iommu.c:988:2: note: Taking false branch if (static_branch_unlikely(&iommu_deferred_attach_enabled)) { ^ drivers/iommu/dma-iommu.c:994:6: note: Calling 'dev_use_swiotlb' if (dev_use_swiotlb(dev)) ^~~~~~~~~~~~~~~~~~~~ drivers/iommu/dma-iommu.c:315:9: note: Left side of '&&' is true return IS_ENABLED(CONFIG_SWIOTLB) && dev_is_untrusted(dev); ^ include/linux/kconfig.h:73:28: note: expanded from macro 'IS_ENABLED' #define IS_ENABLED(option) __or(IS_BUILTIN(option), IS_MODULE(option)) ^ include/linux/kconfig.h:24:22: note: expanded from macro '__or' #define __or(x, y) ___or(x, y) ^ include/linux/kconfig.h:25:23: note: expanded from macro '___or' #define ___or(x, y) ____or(__ARG_PLACEHOLDER_##x, y) ^ include/linux/kconfig.h:26:65: note: expanded from macro '____or' #define ____or(arg1_or_junk, y) __take_second_arg(arg1_or_junk 1, y) ^ drivers/iommu/dma-iommu.c:315:2: note: Returning zero, which participates in a condition later return IS_ENABLED(CONFIG_SWIOTLB) && dev_is_untrusted(dev); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/iommu/dma-iommu.c:994:6: note: Returning from 'dev_use_swiotlb' if (dev_use_swiotlb(dev)) ^~~~~~~~~~~~~~~~~~~~ drivers/iommu/dma-iommu.c:994:2: note: Taking false branch if (dev_use_swiotlb(dev)) ^ drivers/iommu/dma-iommu.c:997:6: note: Assuming the condition is false if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/iommu/dma-iommu.c:997:2: note: Taking false branch if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) ^ drivers/iommu/dma-iommu.c:1006:28: note: Assuming 'i' is < 'nents' for_each_sg(sg, s, nents, i) { ^ include/linux/scatterlist.h:152:31: note: expanded from macro 'for_each_sg' for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg)) ^~~~~~~~~~ drivers/iommu/dma-iommu.c:1006:2: note: Loop condition is true. Entering loop body for_each_sg(sg, s, nents, i) { ^ include/linux/scatterlist.h:152:2: note: expanded from macro 'for_each_sg' for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg)) ^ drivers/iommu/dma-iommu.c:1030:7: note: Assuming 'pad_len' is not equal to 0 if (pad_len && pad_len < s_length - 1) { ^~~~~~~ drivers/iommu/dma-iommu.c:1030:7: note: Left side of '&&' is true drivers/iommu/dma-iommu.c:1030:18: note: Assuming the condition is true if (pad_len && pad_len < s_length - 1) { ^~~~~~~~~~~~~~~~~~~~~~ drivers/iommu/dma-iommu.c:1030:3: note: Taking true branch if (pad_len && pad_len < s_length - 1) { ^ drivers/iommu/dma-iommu.c:1031:17: note: Access to field 'length' results in a dereference of a null pointer (loaded from variable 'prev') prev->length += pad_len; ~~~~ ^ drivers/iommu/dma-iommu.c:1149:7: warning: Value stored to 'coherent' during its initialization is never read [clang-analyzer-deadcode.DeadStores] bool coherent = dev_is_dma_coherent(dev); ^~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~ drivers/iommu/dma-iommu.c:1149:7: note: Value stored to 'coherent' during its initialization is never read bool coherent = dev_is_dma_coherent(dev); ^~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~ Suppressed 5 warnings (5 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. 4 warnings generated. Suppressed 4 warnings (4 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. 5 warnings generated. Suppressed 5 warnings (5 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. 5 warnings generated. Suppressed 5 warnings (5 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. 6 warnings generated. drivers/acpi/acpi_dbg.c:634:4: warning: Value stored to 'count' is never read [clang-analyzer-deadcode.DeadStores] count -= ret; ^ ~~~ drivers/acpi/acpi_dbg.c:634:4: note: Value stored to 'count' is never read count -= ret; ^ ~~~ Suppressed 5 warnings (5 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. 6 warnings generated. Suppressed 6 warnings (6 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. 7 warnings generated. >> drivers/acpi/pfr_telemetry.c:176:3: warning: Value stored to 'ext_status' is >> never read [clang-analyzer-deadcode.DeadStores] ext_status = obj->integer.value; ^ ~~~~~~~~~~~~~~~~~~ drivers/acpi/pfr_telemetry.c:176:3: note: Value stored to 'ext_status' is never read ext_status = obj->integer.value; ^ ~~~~~~~~~~~~~~~~~~ drivers/acpi/pfr_telemetry.c:207:3: warning: Value stored to 'ext_status' is never read [clang-analyzer-deadcode.DeadStores] ext_status = obj->integer.value; ^ ~~~~~~~~~~~~~~~~~~ drivers/acpi/pfr_telemetry.c:207:3: note: Value stored to 'ext_status' is never read ext_status = obj->integer.value; ^ ~~~~~~~~~~~~~~~~~~ Suppressed 5 warnings (5 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. 8 warnings generated. drivers/acpi/apei/apei-base.c:377:2: warning: Assigned value is garbage or undefined [clang-analyzer-core.uninitialized.Assign] list_for_each_entry_safe(res, resn, res_list, list) { ^ include/linux/list.h:717:13: note: expanded from macro 'list_for_each_entry_safe' for (pos = list_first_entry(head, typeof(*pos), member), \ ^ include/linux/list.h:524:2: note: expanded from macro 'list_first_entry' list_entry((ptr)->next, type, member) ^ include/linux/list.h:513:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/container_of.h:18:2: note: expanded from macro 'container_of' void *__mptr = (void *)(ptr); \ ^ drivers/acpi/apei/apei-base.c:473:6: note: Assuming 'rc' is 0 if (rc) ^~ drivers/acpi/apei/apei-base.c:473:2: note: Taking false branch if (rc) ^ drivers/acpi/apei/apei-base.c:483:6: note: Assuming 'rc' is 0 if (rc) ^~ drivers/acpi/apei/apei-base.c:483:2: note: Taking false branch if (rc) ^ drivers/acpi/apei/apei-base.c:486:6: note: Assuming 'rc' is 0 if (rc) ^~ drivers/acpi/apei/apei-base.c:486:2: note: Taking false branch if (rc) ^ drivers/acpi/apei/apei-base.c:489:6: note: Assuming 'arch_apei_filter_addr' is null if (arch_apei_filter_addr) { ^~~~~~~~~~~~~~~~~~~~~ drivers/acpi/apei/apei-base.c:489:2: note: Taking false branch if (arch_apei_filter_addr) { ^ drivers/acpi/apei/apei-base.c:500:2: note: Loop condition is false. Execution continues on line 513 list_for_each_entry(res, &resources->iomem, list) { ^ include/linux/list.h:630:2: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ drivers/acpi/apei/apei-base.c:513:2: note: Loop condition is false. Execution continues on line 525 list_for_each_entry(res, &resources->ioport, list) { ^ include/linux/list.h:630:2: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ drivers/acpi/apei/apei-base.c:526:6: note: 'rc' is not equal to 0 if (rc) { ^~ drivers/acpi/apei/apei-base.c:526:2: note: Taking true branch if (rc) { ^ drivers/acpi/apei/apei-base.c:527:3: note: Loop condition is false. Exiting loop pr_err(APEI_PFX "Fail to merge resources!\n"); ^ include/linux/printk.h:493:2: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ^ include/linux/printk.h:450:26: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ^ include/linux/printk.h:421:3: note: expanded from macro 'printk_index_wrap' __printk_index_emit(_fmt, NULL, NULL); \ ^ include/linux/printk.h:396:34: note: expanded from macro '__printk_index_emit' #define __printk_index_emit(...) do {} while (0) ^ drivers/acpi/apei/apei-base.c:528:3: note: Control jumps to line 534 goto err_unmap_ioport; ^ drivers/acpi/apei/apei-base.c:534:2: note: Loop condition is false. Execution continues on line 539 list_for_each_entry(res, &resources->ioport, list) { ^ include/linux/list.h:630:2: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ ^ drivers/acpi/apei/apei-base.c:541:2: note: Loop condition is false. Execution continues on line 547 list_for_each_entry(res, &resources->iomem, list) { ^ include/linux/list.h:630:2: note: expanded from macro 'list_for_each_entry' for (pos = list_first_entry(head, typeof(*pos), member); \ vim +/ext_status +176 drivers/acpi/pfr_telemetry.c b0013e037a8b077 Chen Yu 2021-12-22 150 b0013e037a8b077 Chen Yu 2021-12-22 151 static int set_pfrt_log_level(int level, struct pfrt_log_device *pfrt_log_dev) b0013e037a8b077 Chen Yu 2021-12-22 152 { b0013e037a8b077 Chen Yu 2021-12-22 153 acpi_handle handle = ACPI_HANDLE(pfrt_log_dev->parent_dev); b0013e037a8b077 Chen Yu 2021-12-22 154 union acpi_object *out_obj, *obj, in_obj, in_buf; b0013e037a8b077 Chen Yu 2021-12-22 155 enum pfru_dsm_status status, ext_status; b0013e037a8b077 Chen Yu 2021-12-22 156 int ret = 0; b0013e037a8b077 Chen Yu 2021-12-22 157 b0013e037a8b077 Chen Yu 2021-12-22 158 memset(&in_obj, 0, sizeof(in_obj)); b0013e037a8b077 Chen Yu 2021-12-22 159 memset(&in_buf, 0, sizeof(in_buf)); b0013e037a8b077 Chen Yu 2021-12-22 160 in_obj.type = ACPI_TYPE_PACKAGE; b0013e037a8b077 Chen Yu 2021-12-22 161 in_obj.package.count = 1; b0013e037a8b077 Chen Yu 2021-12-22 162 in_obj.package.elements = &in_buf; b0013e037a8b077 Chen Yu 2021-12-22 163 in_buf.type = ACPI_TYPE_INTEGER; b0013e037a8b077 Chen Yu 2021-12-22 164 in_buf.integer.value = level; b0013e037a8b077 Chen Yu 2021-12-22 165 b0013e037a8b077 Chen Yu 2021-12-22 166 out_obj = acpi_evaluate_dsm_typed(handle, &pfrt_log_guid, b0013e037a8b077 Chen Yu 2021-12-22 167 pfrt_log_dev->info.log_revid, PFRT_FUNC_SET_LEV, b0013e037a8b077 Chen Yu 2021-12-22 168 &in_obj, ACPI_TYPE_PACKAGE); b0013e037a8b077 Chen Yu 2021-12-22 169 if (!out_obj) b0013e037a8b077 Chen Yu 2021-12-22 170 return -EINVAL; b0013e037a8b077 Chen Yu 2021-12-22 171 b0013e037a8b077 Chen Yu 2021-12-22 172 obj = &out_obj->package.elements[0]; b0013e037a8b077 Chen Yu 2021-12-22 173 status = obj->integer.value; b0013e037a8b077 Chen Yu 2021-12-22 174 if (status != DSM_SUCCEED) { b0013e037a8b077 Chen Yu 2021-12-22 175 obj = &out_obj->package.elements[1]; b0013e037a8b077 Chen Yu 2021-12-22 @176 ext_status = obj->integer.value; b0013e037a8b077 Chen Yu 2021-12-22 177 dev_dbg(pfrt_log_dev->parent_dev, "Error Status:%d\n", status); b0013e037a8b077 Chen Yu 2021-12-22 178 dev_dbg(pfrt_log_dev->parent_dev, "Error Extend Status:%d\n", ext_status); b0013e037a8b077 Chen Yu 2021-12-22 179 ret = -EBUSY; b0013e037a8b077 Chen Yu 2021-12-22 180 } b0013e037a8b077 Chen Yu 2021-12-22 181 b0013e037a8b077 Chen Yu 2021-12-22 182 kfree(out_obj); b0013e037a8b077 Chen Yu 2021-12-22 183 b0013e037a8b077 Chen Yu 2021-12-22 184 return ret; b0013e037a8b077 Chen Yu 2021-12-22 185 } b0013e037a8b077 Chen Yu 2021-12-22 186 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
