From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 25798A0471 for ; Fri, 19 Jul 2019 04:20:18 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 19959137C; Fri, 19 Jul 2019 04:20:17 +0200 (CEST) Received: from guri.nttv6.jp (guri.nttv6.jp [115.69.228.140]) by dpdk.org (Postfix) with ESMTP id A69A9A3 for ; Fri, 19 Jul 2019 04:20:15 +0200 (CEST) Received: from z.nttv6.jp (z.nttv6.jp [IPv6:2402:c800:ff06:6::f]) by guri.nttv6.jp (NTTv6MTA) with ESMTP id B981D25F6C3 for ; Fri, 19 Jul 2019 11:20:11 +0900 (JST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nttv6.jp; s=20180820; t=1563502812; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8d+ruqy1OwirCGeIrsu4akC4LraWS3aAHbLYSwOzJcs=; b=jAy6DPTjqkt5McEolTrkv2pnwcbCZ1Dlw+wiUjLk3NgF7IgguxeUkAaFTAo0dwplYArPSa Nkw79esjNhSWE4ni9tjPoH9jMlyfCgEiY+NGRN6AAaM7wbN6Azv0m8EPVapJGNdZyUrhK7 83UpGSGtuuU1BkSraZI1NJaEiNBUklI= Received: from localhost (fujiko.nttv6.jp [IPv6:2402:c800:ff06:136::141]) by z.nttv6.jp (NTTv6MTA) with ESMTPSA id A57D3763505; Fri, 19 Jul 2019 11:20:11 +0900 (JST) Date: Fri, 19 Jul 2019 11:19:45 +0900 (JST) Message-Id: <20190719.111945.2086809368117346464.yasu@nttv6.jp> To: dev@dpdk.org From: Yasuhiro Ohara In-Reply-To: <20190713.013853.751044529514409504.yasu@nttv6.jp> References: <20190713.013853.751044529514409504.yasu@nttv6.jp> Organizaton: NTT Communications X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Authentication-Results: guri.nttv6.jp; spf=pass smtp.mailfrom=yasu@nttv6.jp Subject: Re: [dpdk-dev] ConnectX-4/mlx5 crashes around rxq_cqe_comp_en? 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The same goes with DPDK-19.05 too. When crash happens, mcqe_n == t_pkt->data_len == 124. struct rte_mbuf **elts (which seems to be prepared somewhere) looks like it's supposed to contain valid mbufs, but (when under a significant load?) it doesn't. (gdb) p/x (void*[124])elts[0] $31 = {0x1d0bd0d80, 0x1d1cfef80, 0x1d28f6a40, 0x1d22eb100, 0x1d195a8c0, 0x1d2137200, 0x1d1eb5540, 0x1d1d0fec0, 0x1d28ecf40, 0x1d19b1bc0, 0x1cec8a200, 0x1d02e2980, 0x1d085cdc0, 0x1d04e8e00, 0x1ccb4e140, 0x1d1e17e80, 0x1d17a1c40, 0x1d14a6e00, 0x1d2871700, 0x1d20b6c40, 0x1d29831c0, 0x1d04941c0, 0x1d0921080, 0x1d070ea40, 0x1d148ea80, 0x1cee100c0, 0x1d1a47e40, 0x1d0ee6600, 0x1d02f1200, 0x1d24bc100, 0x1d1e84e40, 0x1d1e1f2c0, 0x1d28b7ac0, 0x1d2195940, 0x1d21bc540, 0x1d228f080, 0x1d1026100, 0x1d285e100, 0x1d211c7c0, 0x1d2128980, 0x1d1787200, 0x1d170e080, 0x1d1e0e380, 0x1ce638500, 0x1d21a6880, 0x1d20d8ac0, 0x1d25e8600, 0x1d2377880, 0x1d0e13ac0, 0x1c0c07100, 0x1c0c07100, 0x1c0c07100, 0x1c0c07100, 0x0, 0x0, 0x0, 0x0, 0x7ffff7ff487c, 0x1c0c06f00, 0x1c0c08b00, 0x0, 0x0, 0x7ffff7ff207c, 0x1, 0x1480, 0x140000000, 0x100000000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40000000ffffffff, 0x4000000000000001, 0xcd64010000000002, 0x0 } (gdb) p elts[48] $38 = (struct rte_mbuf *) 0x1d0e13ac0 (gdb) p elts[49] $39 = (struct rte_mbuf *) 0x1c0c07100 (gdb) p elts[50] $40 = (struct rte_mbuf *) 0x1c0c07100 (gdb) p elts[51] $41 = (struct rte_mbuf *) 0x1c0c07100 (gdb) p elts[52] $42 = (struct rte_mbuf *) 0x1c0c07100 (gdb) p elts[53] $43 = (struct rte_mbuf *) 0x0 Any thoughts? regards, Yasu From: Yasuhiro Ohara Subject: [dpdk-dev] ConnectX-4/mlx5 crashes around rxq_cqe_comp_en? Date: Sat, 13 Jul 2019 01:38:53 +0900 (JST) Message-ID: <20190713.013853.751044529514409504.yasu@nttv6.jp> > > Hi, > > I get a crash when I put a significant amount of load on ConnectX-4/mlx5, > i.e., 50Gbps for 100GbE port. > > Thread 22 "lcore-slave-19" received signal SIGSEGV, Segmentation fault. > [Switching to Thread 0x7fffe77ee700 (LWP 33519)] > 0x0000555555f010a3 in _mm_storeu_si128 (__B=..., __P=0x10) > at /usr/lib/gcc/x86_64-linux-gnu/7/include/emmintrin.h:721 > 721 *__P = __B; > (gdb) bt > #0 0x0000555555f010a3 in _mm_storeu_si128 (__B=..., __P=0x10) > at /usr/lib/gcc/x86_64-linux-gnu/7/include/emmintrin.h:721 > #1 rxq_cq_decompress_v (rxq=0x22c910ccc0, cq=0x22c8fd1800, elts=0x22c910d240) > at /usr/local/dpdk-stable-18.11.2/drivers/net/mlx5/mlx5_rxtx_vec_sse.h:421 > #2 0x0000555555f04b42 in rxq_burst_v (rxq=0x22c910ccc0, pkts=0x7fffe77eba40, > pkts_n=32, err=0x7fffe77dc978) > at /usr/local/dpdk-stable-18.11.2/drivers/net/mlx5/mlx5_rxtx_vec_sse.h:956 > #3 0x0000555555f055ea in mlx5_rx_burst_vec (dpdk_rxq=0x22c910ccc0, > pkts=0x7fffe77eba40, pkts_n=32) > at /usr/local/dpdk-stable-18.11.2/drivers/net/mlx5/mlx5_rxtx_vec.c:238 > #4 0x0000555555632772 in rte_eth_rx_burst (port_id=4, queue_id=5, > rx_pkts=0x7fffe77eba40, nb_pkts=32) > at /usr/local/dpdk-18.11/x86_64-native-linuxapp-gcc/include/rte_ethdev.h:3879 > > My environments are: > > Ubuntu 18.04.2 LTS 4.15.0-50-generic > MLNX_OFED_LINUX-4.5-1.0.1.0-ubuntu18.04-x86_64 > fw_ver: 12.17.2020 > vendor_id: 0x02c9 > vendor_part_id: 4115 > hw_ver: 0x0 > board_id: LNR3270110033 > DPDK 18.11.2 > > It looks like the CQE compression is the crashing place. > > dpdk-stable-18.11.2/drivers/net/mlx5/mlx5_rxtx_vec_sse.h:956 > 953 /* Decompress the last CQE if compressed. */ > 954 if (comp_idx < MLX5_VPMD_DESCS_PER_LOOP && comp_idx == n) { > 955 assert(comp_idx == (nocmp_n % MLX5_VPMD_DESCS_PER_LOOP)); > 956 rxq_cq_decompress_v(rxq, &cq[nocmp_n], &elts[nocmp_n]); > > And I'm wondering how I can disable rxq_cqe_comp_en devargs. > > > 22.5.3. Run-time configuration > rxq_cqe_comp_en parameter [int] > > Any information or guesses are appreciated. > > Best regards, > Yasu >