From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 1A3A6160 for ; Fri, 20 Jul 2018 11:44:41 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 20 Jul 2018 02:44:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,378,1526367600"; d="scan'208";a="68489581" Received: from silpixa00381635.ir.intel.com (HELO silpixa00381635.ger.corp.intel.com) ([10.237.222.149]) by orsmga003.jf.intel.com with ESMTP; 20 Jul 2018 02:44:39 -0700 From: Jasvinder Singh To: dev@dpdk.org Cc: cristian.dumitrescu@intel.com Date: Fri, 20 Jul 2018 10:44:39 +0100 Message-Id: <20180720094439.100562-1-jasvinder.singh@intel.com> X-Mailer: git-send-email 2.9.3 Subject: [dpdk-dev] [PATCH] net/softnic: fix memory illegal access 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: Fri, 20 Jul 2018 09:44:42 -0000 While deleting the elements from the linked list, TAILQ_FOREACH causes read from the freed pointer. Fixes the issue by using for loop instead of TAILQ_FOREACH. Coverity issue: 302867 Fixes: bef50bcb1c47 ("net/softnic: implement start and stop") Signed-off-by: Jasvinder Singh Acked-by: Cristian Dumitrescu --- drivers/net/softnic/rte_eth_softnic_swq.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/softnic/rte_eth_softnic_swq.c b/drivers/net/softnic/rte_eth_softnic_swq.c index 1944fbb..a1f1899 100644 --- a/drivers/net/softnic/rte_eth_softnic_swq.c +++ b/drivers/net/softnic/rte_eth_softnic_swq.c @@ -36,9 +36,11 @@ softnic_swq_free(struct pmd_internals *p) void softnic_softnic_swq_free_keep_rxq_txq(struct pmd_internals *p) { - struct softnic_swq *swq; + struct softnic_swq *swq, *swq_next; + + for (swq = TAILQ_FIRST(&p->swq_list); swq != NULL; swq = swq_next) { + swq_next = TAILQ_NEXT(swq, node); - TAILQ_FOREACH(swq, &p->swq_list, node) { if ((strncmp(swq->name, "RXQ", strlen("RXQ")) == 0) || (strncmp(swq->name, "TXQ", strlen("TXQ")) == 0)) continue; -- 2.9.3