tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 47d9bb711707d15b19fad18c8e2b4b027a264a3a commit: 6d4ab2e97dcfbcd748ae71761a9d8e5e41cc732c [11118/11453] extrawarn: enable format and stringop overflow warnings in W=1 config: powerpc64-defconfig (https://download.01.org/0day-ci/archive/20230822/202308221126.HCcSBbdQ-lkp@xxxxxxxxx/config) compiler: powerpc64-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230822/202308221126.HCcSBbdQ-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202308221126.HCcSBbdQ-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): arch/powerpc/platforms/pseries/lpar.c: In function '__machine_initcall_pseries_vpa_debugfs_init': >> arch/powerpc/platforms/pseries/lpar.c:2024:36: error: '%ld' directive writing between 1 and 20 bytes into a region of size 12 [-Werror=format-overflow=] 2024 | sprintf(name, "cpu-%ld", i); | ^~~ In function 'vpa_debugfs_init', inlined from '__machine_initcall_pseries_vpa_debugfs_init' at arch/powerpc/platforms/pseries/lpar.c:2030:1: arch/powerpc/platforms/pseries/lpar.c:2024:31: note: directive argument in the range [-9223372036854775808, 4294967294] 2024 | sprintf(name, "cpu-%ld", i); | ^~~~~~~~~ arch/powerpc/platforms/pseries/lpar.c:2024:17: note: 'sprintf' output between 6 and 25 bytes into a destination of size 16 2024 | sprintf(name, "cpu-%ld", i); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- arch/powerpc/platforms/cell/iommu.c: In function 'cell_iommu_alloc': >> arch/powerpc/platforms/cell/iommu.c:654:58: error: '%d' directive output may be truncated writing between 1 and 11 bytes into a region of size 3 [-Werror=format-truncation=] 654 | snprintf(iommu->name, sizeof(iommu->name), "iommu%d", i); | ^~ arch/powerpc/platforms/cell/iommu.c:654:52: note: directive argument in the range [-2147483648, 1] 654 | snprintf(iommu->name, sizeof(iommu->name), "iommu%d", i); | ^~~~~~~~~ arch/powerpc/platforms/cell/iommu.c:654:9: note: 'snprintf' output between 7 and 17 bytes into a destination of size 8 654 | snprintf(iommu->name, sizeof(iommu->name), "iommu%d", i); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- arch/powerpc/platforms/ps3/setup.c: In function 'ps3_setup_arch': >> arch/powerpc/platforms/ps3/setup.c:229:24: error: '%u' directive output may be truncated writing between 1 and 5 bytes into a region of size between 4 and 12 [-Werror=format-truncation=] 229 | "%u.%u.%u", ps3_firmware_version.major, | ^~ arch/powerpc/platforms/ps3/setup.c:229:17: note: directive argument in the range [0, 65535] 229 | "%u.%u.%u", ps3_firmware_version.major, | ^~~~~~~~~~ arch/powerpc/platforms/ps3/setup.c:228:9: note: 'snprintf' output between 6 and 18 bytes into a destination of size 16 228 | snprintf(ps3_firmware_version_str, sizeof(ps3_firmware_version_str), | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 229 | "%u.%u.%u", ps3_firmware_version.major, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 230 | ps3_firmware_version.minor, ps3_firmware_version.rev); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- arch/powerpc/sysdev/xive/common.c: In function 'xive_core_debugfs_create': >> arch/powerpc/sysdev/xive/common.c:1845:50: error: '%ld' directive output may be truncated writing between 1 and 20 bytes into a region of size 13 [-Werror=format-truncation=] 1845 | snprintf(name, sizeof(name), "cpu%ld", cpu); | ^~~ arch/powerpc/sysdev/xive/common.c:1845:46: note: directive argument in the range [-9223372036854775808, 4294967294] 1845 | snprintf(name, sizeof(name), "cpu%ld", cpu); | ^~~~~~~~ arch/powerpc/sysdev/xive/common.c:1845:17: note: 'snprintf' output between 5 and 24 bytes into a destination of size 16 1845 | snprintf(name, sizeof(name), "cpu%ld", cpu); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +2024 arch/powerpc/platforms/pseries/lpar.c c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2010 c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2011 static int __init vpa_debugfs_init(void) c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2012 { c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2013 char name[16]; c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2014 long i; 11dd34f3eae5a4 YueHaibing 2019-02-18 2015 struct dentry *vpa_dir; c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2016 c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2017 if (!firmware_has_feature(FW_FEATURE_SPLPAR)) c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2018 return 0; c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2019 dbf77fed8b302e Aneesh Kumar K.V 2021-08-12 2020 vpa_dir = debugfs_create_dir("vpa", arch_debugfs_dir); c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2021 c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2022 /* set up the per-cpu vpa file*/ c6c26fb55e8e4b Aravinda Prasad 2018-10-16 2023 for_each_possible_cpu(i) { c6c26fb55e8e4b Aravinda Prasad 2018-10-16 @2024 sprintf(name, "cpu-%ld", i); :::::: The code at line 2024 was first introduced by commit :::::: c6c26fb55e8e4b3fc376be5611685990a17de27a powerpc/pseries: Export raw per-CPU VPA data via debugfs :::::: TO: Aravinda Prasad <aravinda@xxxxxxxxxxxxxxxxxx> :::::: CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
