From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dariusz Stojaczyk Subject: [PATCH] memory: fix segfault on rte_mem_virt2memseg() call with invalid addr Date: Fri, 1 Jun 2018 15:22:55 +0200 Message-ID: <1527859375-160704-1-git-send-email-dariuszx.stojaczyk@intel.com> Cc: Dariusz Stojaczyk To: dev@dpdk.org, Anatoly Burakov Return-path: Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id EA26458C6 for ; Fri, 1 Jun 2018 11:40:23 +0200 (CEST) List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" When trying to use it with an address that's not managed by DPDK it would segfault due to a missing check. The doc says this function returns either a pointer or NULL, so let it do so. Change-Id: Ib292f148914e67054f5d7b664077f19cba7000e4 Signed-off-by: Dariusz Stojaczyk --- lib/librte_eal/common/eal_common_memory.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/librte_eal/common/eal_common_memory.c b/lib/librte_eal/common/eal_common_memory.c index 4f0688f..ecc5bb2 100644 --- a/lib/librte_eal/common/eal_common_memory.c +++ b/lib/librte_eal/common/eal_common_memory.c @@ -536,6 +536,9 @@ virt2memseg(const void *addr, const struct rte_memseg_list *msl) void *start, *end; int ms_idx; + if (msl == NULL) + return NULL; + /* a memseg list was specified, check if it's the right one */ start = msl->base_va; end = RTE_PTR_ADD(start, (size_t)msl->page_sz * msl->memseg_arr.len); -- 2.7.4