From a36b40dd8ecfb61648045e418551f75055ca77f9 Mon Sep 17 00:00:00 2001 From: Ferruh Yigit Date: Tue, 26 Jun 2018 12:38:07 +0100 Subject: [PATCH] kni: fix build with gcc 8.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Error observed when CONFIG_RTE_KNI_KMOD_ETHTOOL config option is enabled. build error: In function ‘strncpy’, inlined from ‘igb_get_drvinfo’ at kernel/linux/kni/igb_ethtool.c:814:2: include/linux/string.h:246:9: error: ‘__builtin_strncpy’ output may be truncated copying 31 bytes from a string of length 42 [-Werror=stringop-truncation] return __builtin_strncpy(p, q, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fixed by using strlcpy instead of strncpy. adapter->fw_version size kept same because of c3698192940c ("kni: fix build with gcc 7.1") Also next line strncpy usage replaced with strlcpy while arround. Fixes: c3698192940c ("kni: fix build with gcc 7.1") Cc: stable@dpdk.org Signed-off-by: Ferruh Yigit Acked-by: Pablo de Lara --- kernel/linux/kni/ethtool/igb/igb_ethtool.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/linux/kni/ethtool/igb/igb_ethtool.c b/kernel/linux/kni/ethtool/igb/igb_ethtool.c index 064528bcf8..002f75c486 100644 --- a/kernel/linux/kni/ethtool/igb/igb_ethtool.c +++ b/kernel/linux/kni/ethtool/igb/igb_ethtool.c @@ -811,9 +811,10 @@ static void igb_get_drvinfo(struct net_device *netdev, strncpy(drvinfo->driver, igb_driver_name, sizeof(drvinfo->driver) - 1); strncpy(drvinfo->version, igb_driver_version, sizeof(drvinfo->version) - 1); - strncpy(drvinfo->fw_version, adapter->fw_version, - sizeof(drvinfo->fw_version) - 1); - strncpy(drvinfo->bus_info, pci_name(adapter->pdev), sizeof(drvinfo->bus_info) -1); + strlcpy(drvinfo->fw_version, adapter->fw_version, + sizeof(drvinfo->fw_version)); + strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), + sizeof(drvinfo->bus_info)); drvinfo->n_stats = IGB_STATS_LEN; drvinfo->testinfo_len = IGB_TEST_LEN; drvinfo->regdump_len = igb_get_regs_len(netdev); -- 2.20.1