Messages in this thread | | | Date | Fri, 9 Jul 2021 14:51:46 +0800 | From | kernel test robot <> | Subject | drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:4: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length |
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Hi Huazhong,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f55966571d5eb2876a11e48e798b4592fa1ffbb7 commit: 1556ea9120ffcf4faf7ac6b62a6e28216f260a23 net: hns3: refactor dump mac list of debugfs date: 8 weeks ago config: alpha-buildonly-randconfig-r003-20210709 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 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=1556ea9120ffcf4faf7ac6b62a6e28216f260a23 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 1556ea9120ffcf4faf7ac6b62a6e28216f260a23 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c: In function 'hclge_dbg_fill_content.constprop': >> drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:4: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation] 90 | strncpy(pos, items[i].name, strlen(items[i].name)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:88:4: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation] 88 | strncpy(pos, result[i], strlen(result[i])); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/strncpy +90 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
77 78 static void hclge_dbg_fill_content(char *content, u16 len, 79 const struct hclge_dbg_item *items, 80 const char **result, u16 size) 81 { 82 char *pos = content; 83 u16 i; 84 85 memset(content, ' ', len); 86 for (i = 0; i < size; i++) { 87 if (result) 88 strncpy(pos, result[i], strlen(result[i])); 89 else > 90 strncpy(pos, items[i].name, strlen(items[i].name)); 91 pos += strlen(items[i].name) + items[i].interval; 92 } 93 *pos++ = '\n'; 94 *pos++ = '\0'; 95 } 96
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