From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <ferruh.yigit@intel.com>
Received: from mga17.intel.com (mga17.intel.com [192.55.52.151])
by dpdk.org (Postfix) with ESMTP id 44C031B4D0;
Tue, 26 Jun 2018 12:38:37 +0200 (CEST)
X-Amp-Result: SKIPPED(no attachment in message)
X-Amp-File-Uploaded: False
Received: from fmsmga007.fm.intel.com ([10.253.24.52])
by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384;
26 Jun 2018 03:38:37 -0700
X-ExtLoop1: 1
X-IronPort-AV: E=Sophos;i="5.51,274,1526367600"; d="scan'208";a="49979389"
Received: from silpixa00399752.ir.intel.com (HELO
silpixa00399752.ger.corp.intel.com) ([10.237.222.212])
by fmsmga007.fm.intel.com with ESMTP; 26 Jun 2018 03:38:26 -0700
From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: dev@dpdk.org, stephen@networkplumber.org, pablo.de.lara.guarch@intel.com,
stable@dpdk.org
Date: Tue, 26 Jun 2018 12:38:07 +0100
Message-Id: <20180626113807.67100-1-ferruh.yigit@intel.com>
X-Mailer: git-send-email 2.17.1
In-Reply-To: <07e4d536-edd6-292d-5adb-c05793731623@intel.com>
References: <07e4d536-edd6-292d-5adb-c05793731623@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Subject: [dpdk-stable] [PATCH v3] kni: fix build with gcc 8.1
X-BeenThere: stable@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches for DPDK stable branches <stable.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/stable>,
<mailto:stable-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/stable/>
List-Post: <mailto:stable@dpdk.org>
List-Help: <mailto:stable-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/stable>,
<mailto:stable-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Tue, 26 Jun 2018 10:38:39 -0000
Error observed when CONFIG_RTE_KNI_KMOD_ETHTOOL config option is
enabled.
build error:
In function ‘strncpy’,
inlined from ‘igb_get_drvinfo’ at
.../dpdk/build/build/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 <ferruh.yigit@intel.com>
---
v2:
* used strlcpy instead of strncpy
* Updated strncpy usage in next line to strlcpy too
* Added fixes line
v3:
* fix patch syntax corrupted during send
---
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 064528bcf..002f75c48 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);
--
2.17.1