From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.warmcat.com (mail.warmcat.com [163.172.24.82]) by dpdk.org (Postfix) with ESMTP id 709A844BE for ; Tue, 8 May 2018 06:35:30 +0200 (CEST) From: Andy Green To: dev@dpdk.org Date: Tue, 08 May 2018 12:29:58 +0800 Message-ID: <152575379822.56689.11093033413803526492.stgit@localhost.localdomain> In-Reply-To: <152575364588.56689.3300796065057551728.stgit@localhost.localdomain> References: <152575364588.56689.3300796065057551728.stgit@localhost.localdomain> User-Agent: StGit/unknown-version Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH 06/18] drivers: net: nfp: nfpcore fix off-by-one and no NUL on strncpy use X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 May 2018 04:35:30 -0000 /home/agreen/projects/dpdk/drivers/net/nfp/nfpcore/nfp_resource.c:76:2: error: ‘strncpy’ output may be truncated copying 8 bytes from a string of length 8 [-Werror=stringop-truncation] strncpy(name_pad, res->name, sizeof(name_pad)); --- drivers/net/nfp/nfpcore/nfp_resource.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/nfp/nfpcore/nfp_resource.c b/drivers/net/nfp/nfpcore/nfp_resource.c index e1df2b2e1..54c6dcf54 100644 --- a/drivers/net/nfp/nfpcore/nfp_resource.c +++ b/drivers/net/nfp/nfpcore/nfp_resource.c @@ -65,15 +65,15 @@ struct nfp_resource { static int nfp_cpp_resource_find(struct nfp_cpp *cpp, struct nfp_resource *res) { - char name_pad[NFP_RESOURCE_ENTRY_NAME_SZ] = {}; + char name_pad[NFP_RESOURCE_ENTRY_NAME_SZ + 2]; struct nfp_resource_entry entry; uint32_t cpp_id, key; int ret, i; cpp_id = NFP_CPP_ID(NFP_RESOURCE_TBL_TARGET, 3, 0); /* Atomic read */ - memset(name_pad, 0, NFP_RESOURCE_ENTRY_NAME_SZ); - strncpy(name_pad, res->name, sizeof(name_pad)); + memset(name_pad, 0, sizeof(name_pad)); + strncpy(name_pad, res->name, sizeof(name_pad) - 1); /* Search for a matching entry */ if (!memcmp(name_pad, NFP_RESOURCE_TBL_NAME "\0\0\0\0\0\0\0\0", 8)) {