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Message-ID: <202410252249.mmE2EZPz-lkp@intel.com>
Date: Fri, 25 Oct 2024 22:56:46 +0800
From: kernel test robot <lkp@...el.com>
To: Rosen Penev <rosenp@...il.com>, netdev@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Madalin Bucur <madalin.bucur@....com>,
Andrew Lunn <andrew+netdev@...n.ch>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Ioana Ciornei <ioana.ciornei@....com>,
Claudiu Manoil <claudiu.manoil@....com>,
Vladimir Oltean <vladimir.oltean@....com>,
Rosen Penev <rosenp@...il.com>, linux-kernel@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH net-next] net: freescale: use ethtool string helpers
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 <lkp@...el.com>
| 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
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