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Subjectdrivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:25: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c5fe7a97f20c7f3070ac870144515c0fabc6b999
commit: 0ca821da86a5ec24eb2ece24fe87e5bf518c5939 net: hns3: add debugfs support for vlan configuration
date: 1 year, 2 months ago
config: csky-allmodconfig (https://download.01.org/0day-ci/archive/20220717/202207170606.7WtHs9yS-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 12.1.0
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=0ca821da86a5ec24eb2ece24fe87e5bf518c5939
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 0ca821da86a5ec24eb2ece24fe87e5bf518c5939
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash drivers/net/ethernet/hisilicon/hns3/hns3pf/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_vlan_filter_config.constprop' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:2080:2:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:92:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
92 | strncpy(pos, items[i].name, strlen(items[i].name));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_vlan_filter_config.constprop' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:2102:3:
>> drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:25: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation]
90 | strncpy(pos, result[i], strlen(result[i]));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_mac_list' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:1872:2:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:92:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
92 | strncpy(pos, items[i].name, strlen(items[i].name));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_mac_list' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:1887:4:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
90 | strncpy(pos, result[i], strlen(result[i]));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_tm_pg' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:735:2:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:92:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
92 | strncpy(pos, items[i].name, strlen(items[i].name));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_tm_pg' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:775:3:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
90 | strncpy(pos, result[i], strlen(result[i]));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_tm_qset' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:1027:2:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:92:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
92 | strncpy(pos, items[i].name, strlen(items[i].name));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_tm_qset' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:1059:3:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
90 | strncpy(pos, result[i], strlen(result[i]));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_vlan_offload_config' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:2123:2:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:92:25: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation]
92 | strncpy(pos, items[i].name, strlen(items[i].name));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'hclge_dbg_fill_content',
inlined from 'hclge_dbg_dump_vlan_offload_config' at drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:2154:3:
>> drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:90:25: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation]
90 | strncpy(pos, result[i], strlen(result[i]));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for LOCKDEP
Depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && (FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86)
Selected by
- PROVE_LOCKING && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT
- LOCK_STAT && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT
- DEBUG_LOCK_ALLOC && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT


vim +/strncpy +90 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c

a582b78dfc33d2 Zhongzhu Liu 2019-08-28 79
1556ea9120ffcf Huazhong Tan 2021-05-14 80 static void hclge_dbg_fill_content(char *content, u16 len,
1556ea9120ffcf Huazhong Tan 2021-05-14 81 const struct hclge_dbg_item *items,
1556ea9120ffcf Huazhong Tan 2021-05-14 82 const char **result, u16 size)
1556ea9120ffcf Huazhong Tan 2021-05-14 83 {
1556ea9120ffcf Huazhong Tan 2021-05-14 84 char *pos = content;
1556ea9120ffcf Huazhong Tan 2021-05-14 85 u16 i;
1556ea9120ffcf Huazhong Tan 2021-05-14 86
1556ea9120ffcf Huazhong Tan 2021-05-14 87 memset(content, ' ', len);
1556ea9120ffcf Huazhong Tan 2021-05-14 88 for (i = 0; i < size; i++) {
1556ea9120ffcf Huazhong Tan 2021-05-14 89 if (result)
1556ea9120ffcf Huazhong Tan 2021-05-14 @90 strncpy(pos, result[i], strlen(result[i]));
1556ea9120ffcf Huazhong Tan 2021-05-14 91 else
1556ea9120ffcf Huazhong Tan 2021-05-14 92 strncpy(pos, items[i].name, strlen(items[i].name));
1556ea9120ffcf Huazhong Tan 2021-05-14 93 pos += strlen(items[i].name) + items[i].interval;
1556ea9120ffcf Huazhong Tan 2021-05-14 94 }
1556ea9120ffcf Huazhong Tan 2021-05-14 95 *pos++ = '\n';
1556ea9120ffcf Huazhong Tan 2021-05-14 96 *pos++ = '\0';
1556ea9120ffcf Huazhong Tan 2021-05-14 97 }
1556ea9120ffcf Huazhong Tan 2021-05-14 98

:::::: The code at line 90 was first introduced by commit
:::::: 1556ea9120ffcf4faf7ac6b62a6e28216f260a23 net: hns3: refactor dump mac list of debugfs

:::::: TO: Huazhong Tan <tanhuazhong@huawei.com>
:::::: CC: David S. Miller <davem@davemloft.net>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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