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charset=us-ascii Content-Disposition: inline In-Reply-To: <20241024205257.574836-1-rosenp@gmail.com> Hi Rosen, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Rosen-Penev/net-freescale-use-ethtool-string-helpers/20241025-045447 base: net-next/main patch link: https://lore.kernel.org/r/20241024205257.574836-1-rosenp%40gmail.com patch subject: [PATCH net-next] net: freescale: use ethtool string helpers config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20241025/202410252249.mmE2EZPz-lkp@intel.com/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 5886454669c3c9026f7f27eab13509dd0241f2d6) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241025/202410252249.mmE2EZPz-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202410252249.mmE2EZPz-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c:11: In file included from include/linux/platform_device.h:13: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:19: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:181: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:2213: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 505 | item]; | ~~~~ include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 512 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 525 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c:13: In file included from include/linux/fsl/ptp_qoriq.h:9: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:95: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c:13: In file included from include/linux/fsl/ptp_qoriq.h:9: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:95: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c:13: In file included from include/linux/fsl/ptp_qoriq.h:9: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:95: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 693 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 701 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 709 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 718 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 727 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 736 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c:257:14: warning: variables 'j' and 'num_cpus' used in loop condition not modified in loop body [-Wfor-loop-analysis] 257 | for (i = 0; j < num_cpus; i++) | ^ ~~~~~~~~ 17 warnings generated. vim +257 drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c 242 243 static void dpaa_get_strings(struct net_device *net_dev, u32 stringset, 244 u8 *data) 245 { 246 unsigned int i, j, num_cpus; 247 248 num_cpus = num_online_cpus(); 249 250 for (i = 0; i < DPAA_STATS_PERCPU_LEN; i++) { 251 for (j = 0; j < num_cpus; j++) 252 ethtool_sprintf(&data, "%s [CPU %d]", 253 dpaa_stats_percpu[i], j); 254 255 ethtool_sprintf(&data, "%s [TOTAL]", dpaa_stats_percpu[i]); 256 } > 257 for (i = 0; j < num_cpus; i++) 258 ethtool_sprintf(&data, "bpool [CPU %d]", i); 259 260 ethtool_puts(&data, "bpool [TOTAL]"); 261 262 for (i = 0; i < DPAA_STATS_GLOBAL_LEN; i++) 263 ethtool_puts(&data, dpaa_stats_global[i]); 264 } 265 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki