CC: [email protected] CC: [email protected] BCC: [email protected] CC: [email protected] TO: "Rafael J. Wysocki" <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b2d229d4ddb17db541098b83524d901257e93845 commit: 46573fd6369f098f15e11768850b6430f374905f cpufreq: intel_pstate: hybrid: Rework HWP calibration date: 7 months ago :::::: branch date: 23 hours ago :::::: commit date: 7 months ago config: x86_64-randconfig-c007-20220418 (https://download.01.org/0day-ci/archive/20220419/[email protected]/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b27430f9f46b88bcd54d992debc8d72e131e1bd0) 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=46573fd6369f098f15e11768850b6430f374905f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 46573fd6369f098f15e11768850b6430f374905f # 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 <[email protected]> clang-analyzer warnings: (new ones prefixed by >>) ^ arch/x86/include/asm/cpufeature.h:122:32: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^ arch/x86/include/asm/cpufeature.h:90:5: note: expanded from macro 'REQUIRED_MASK_BIT_SET' CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 16, feature_bit) || \ ^ arch/x86/include/asm/cpufeature.h:64:22: note: expanded from macro 'CHECK_BIT_IN_MASK_WORD' (((bit)>>5)==(word) && (1UL<<((bit)&31) & maskname##word )) ^ drivers/cpufreq/intel_pstate.c:742:6: note: Left side of '&&' is false if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ arch/x86/include/asm/cpufeature.h:141:27: note: expanded from macro 'boot_cpu_has' #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) ^ arch/x86/include/asm/cpufeature.h:122:32: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^ arch/x86/include/asm/cpufeature.h:91:5: note: expanded from macro 'REQUIRED_MASK_BIT_SET' CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 17, feature_bit) || \ ^ arch/x86/include/asm/cpufeature.h:64:22: note: expanded from macro 'CHECK_BIT_IN_MASK_WORD' (((bit)>>5)==(word) && (1UL<<((bit)&31) & maskname##word )) ^ drivers/cpufreq/intel_pstate.c:742:6: note: Left side of '&&' is false if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ arch/x86/include/asm/cpufeature.h:141:27: note: expanded from macro 'boot_cpu_has' #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) ^ arch/x86/include/asm/cpufeature.h:122:32: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^ arch/x86/include/asm/cpufeature.h:92:5: note: expanded from macro 'REQUIRED_MASK_BIT_SET' CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 18, feature_bit) || \ ^ arch/x86/include/asm/cpufeature.h:64:22: note: expanded from macro 'CHECK_BIT_IN_MASK_WORD' (((bit)>>5)==(word) && (1UL<<((bit)&31) & maskname##word )) ^ drivers/cpufreq/intel_pstate.c:742:6: note: Left side of '&&' is false if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ arch/x86/include/asm/cpufeature.h:141:27: note: expanded from macro 'boot_cpu_has' #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) ^ arch/x86/include/asm/cpufeature.h:122:32: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^ arch/x86/include/asm/cpufeature.h:93:5: note: expanded from macro 'REQUIRED_MASK_BIT_SET' CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 19, feature_bit) || \ ^ arch/x86/include/asm/cpufeature.h:64:22: note: expanded from macro 'CHECK_BIT_IN_MASK_WORD' (((bit)>>5)==(word) && (1UL<<((bit)&31) & maskname##word )) ^ drivers/cpufreq/intel_pstate.c:742:6: note: Left side of '||' is false if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ arch/x86/include/asm/cpufeature.h:141:27: note: expanded from macro 'boot_cpu_has' #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) ^ arch/x86/include/asm/cpufeature.h:122:32: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^ arch/x86/include/asm/cpufeature.h:74:5: note: expanded from macro 'REQUIRED_MASK_BIT_SET' ( CHECK_BIT_IN_MASK_WORD(REQUIRED_MASK, 0, feature_bit) || \ ^ arch/x86/include/asm/cpufeature.h:64:2: note: expanded from macro 'CHECK_BIT_IN_MASK_WORD' (((bit)>>5)==(word) && (1UL<<((bit)&31) & maskname##word )) ^ drivers/cpufreq/intel_pstate.c:742:6: note: '?' condition is false if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ arch/x86/include/asm/cpufeature.h:141:27: note: expanded from macro 'boot_cpu_has' #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) ^ arch/x86/include/asm/cpufeature.h:122:3: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^ drivers/cpufreq/intel_pstate.c:742:6: note: Assuming the condition is false if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ arch/x86/include/asm/cpufeature.h:141:27: note: expanded from macro 'boot_cpu_has' #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/include/asm/cpufeature.h:122:3: note: expanded from macro 'cpu_has' (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ ^~~~~~~~~~~~~~~~~~~~ drivers/cpufreq/intel_pstate.c:742:2: note: Taking false branch if (boot_cpu_has(X86_FEATURE_HWP_EPP)) { ^ drivers/cpufreq/intel_pstate.c:758:7: note: Assuming the condition is true if (epp == -EINVAL) ^~~~~~~~~~~~~~ drivers/cpufreq/intel_pstate.c:758:3: note: Taking true branch if (epp == -EINVAL) ^ drivers/cpufreq/intel_pstate.c:759:27: note: The result of the left shift is undefined because the left operand is negative epp = (pref_index - 1) << 2; ~~~~~~~~~~~~~~~~ ^ >> drivers/cpufreq/intel_pstate.c:1790:9: warning: Division by zero >> [clang-analyzer-core.DivideZero] return DIV_ROUND_UP(core_get_scaling() * hybrid_ref_perf, ^ include/linux/math.h:36:22: note: expanded from macro 'DIV_ROUND_UP' #define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP ^ include/uapi/linux/const.h:34:54: note: expanded from macro '__KERNEL_DIV_ROUND_UP' #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) ~~~~~~~~~~~~~~~~^~~~~ drivers/cpufreq/intel_pstate.c:1791:8: note: Calling 'intel_pstate_cppc_nominal' intel_pstate_cppc_nominal(cpu)); ^ include/linux/math.h:36:22: note: expanded from macro 'DIV_ROUND_UP' #define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP ^ include/uapi/linux/const.h:34:57: note: expanded from macro '__KERNEL_DIV_ROUND_UP' #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) ^ drivers/cpufreq/intel_pstate.c:393:6: note: Assuming the condition is true if (cppc_get_nominal_perf(cpu, &nominal_perf)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/cpufreq/intel_pstate.c:393:2: note: Taking true branch if (cppc_get_nominal_perf(cpu, &nominal_perf)) ^ drivers/cpufreq/intel_pstate.c:394:3: note: Returning zero return 0; ^~~~~~~~ drivers/cpufreq/intel_pstate.c:1791:8: note: Returning from 'intel_pstate_cppc_nominal' intel_pstate_cppc_nominal(cpu)); ^ include/linux/math.h:36:22: note: expanded from macro 'DIV_ROUND_UP' #define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP ^ include/uapi/linux/const.h:34:57: note: expanded from macro '__KERNEL_DIV_ROUND_UP' #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) ^ drivers/cpufreq/intel_pstate.c:1790:9: note: Division by zero return DIV_ROUND_UP(core_get_scaling() * hybrid_ref_perf, ^ include/linux/math.h:36:22: note: expanded from macro 'DIV_ROUND_UP' #define DIV_ROUND_UP __KERNEL_DIV_ROUND_UP ^ include/uapi/linux/const.h:34:54: note: expanded from macro '__KERNEL_DIV_ROUND_UP' #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) ~~~~~~~~~~~~~~~~^~~~~ 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. 1 warning generated. Suppressed 1 warnings (1 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. mm/memfd.c:281:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcpy(name, MFD_NAME_PREFIX); ^~~~~~ mm/memfd.c:281:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 strcpy(name, MFD_NAME_PREFIX); ^~~~~~ 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. 2 warnings generated. Suppressed 2 warnings (2 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. 8 warnings generated. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. Suppressed 8 warnings (8 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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/i2c/i2c-core-smbus.c:109:2: warning: Undefined or garbage value returned to caller [clang-analyzer-core.uninitialized.UndefReturn] return (status < 0) ? status : data.byte; ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/i2c/i2c-core-smbus.c:106:11: note: Calling 'i2c_smbus_xfer' status = i2c_smbus_xfer(client->adapter, client->addr, client->flags, vim +1790 drivers/cpufreq/intel_pstate.c 46573fd6369f09 Rafael J. Wysocki 2021-09-04 1787 46573fd6369f09 Rafael J. Wysocki 2021-09-04 1788 static int hybrid_get_cpu_scaling(int cpu) 46573fd6369f09 Rafael J. Wysocki 2021-09-04 1789 { 46573fd6369f09 Rafael J. Wysocki 2021-09-04 @1790 return DIV_ROUND_UP(core_get_scaling() * hybrid_ref_perf, 46573fd6369f09 Rafael J. Wysocki 2021-09-04 1791 intel_pstate_cppc_nominal(cpu)); 46573fd6369f09 Rafael J. Wysocki 2021-09-04 1792 } 46573fd6369f09 Rafael J. Wysocki 2021-09-04 1793 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
