From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by dpdk.org (Postfix) with ESMTP id 584FA1B021 for ; Tue, 17 Apr 2018 17:50:22 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Apr 2018 08:50:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,464,1517904000"; d="scan'208";a="34946785" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by orsmga006.jf.intel.com with ESMTP; 17 Apr 2018 08:50:19 -0700 Received: from sivswdev01.ir.intel.com (sivswdev01.ir.intel.com [10.237.217.45]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id w3HFoIOr032149; Tue, 17 Apr 2018 16:50:18 +0100 Received: from sivswdev01.ir.intel.com (localhost [127.0.0.1]) by sivswdev01.ir.intel.com with ESMTP id w3HFoIoJ027072; Tue, 17 Apr 2018 16:50:18 +0100 Received: (from aburakov@localhost) by sivswdev01.ir.intel.com with LOCAL id w3HFoInj027068; Tue, 17 Apr 2018 16:50:18 +0100 From: Anatoly Burakov To: dev@dpdk.org Cc: thomas@monjalon.net, anatoly.burakov@intel.com Date: Tue, 17 Apr 2018 16:50:14 +0100 Message-Id: X-Mailer: git-send-email 1.7.0.7 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH 07/10] mem: fix potential bad unmap 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, 17 Apr 2018 15:50:22 -0000 Previously, if mmap failed to map page address at requested address, we were attempting to unmap the wrong address. Fix it by unmapping our actual mapped address, and jump further to avoid unmapping memory that is not allocated. Coverity issue: 272602 Fixes: 582bed1e1d1d ("mem: support mapping hugepages at runtime") Cc: anatoly.burakov@intel.com Signed-off-by: Anatoly Burakov --- lib/librte_eal/linuxapp/eal/eal_memalloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/librte_eal/linuxapp/eal/eal_memalloc.c b/lib/librte_eal/linuxapp/eal/eal_memalloc.c index 8420a26..6a75e5b 100644 --- a/lib/librte_eal/linuxapp/eal/eal_memalloc.c +++ b/lib/librte_eal/linuxapp/eal/eal_memalloc.c @@ -466,7 +466,8 @@ alloc_seg(struct rte_memseg *ms, void *addr, int socket_id, } if (va != addr) { RTE_LOG(DEBUG, EAL, "%s(): wrong mmap() address\n", __func__); - goto mapped; + munmap(va, alloc_sz); + goto resized; } /* for non-single file segments, we can close fd here */ if (!internal_config.single_file_segments) -- 2.7.4