From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.tuxdriver.com (charlotte.tuxdriver.com [70.61.120.58]) by dpdk.org (Postfix) with ESMTP id A3FDA5939 for ; Tue, 7 Oct 2014 18:39:26 +0200 (CEST) Received: from hmsreliant.think-freely.org ([2001:470:8:a08:7aac:c0ff:fec2:933b] helo=localhost) by smtp.tuxdriver.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.63) (envelope-from ) id 1XbXuG-0003n4-A6; Tue, 07 Oct 2014 12:46:39 -0400 Date: Tue, 7 Oct 2014 12:46:35 -0400 From: Neil Horman To: "Michael Hu (NSBU)" Message-ID: <20141007164635.GC27719@hmsreliant.think-freely.org> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-Spam-Score: -2.9 (--) X-Spam-Status: No Cc: "dev@dpdk.org" Subject: Re: [dpdk-dev] section mismatch warnings X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 07 Oct 2014 16:39:27 -0000 On Mon, Oct 06, 2014 at 06:42:04PM +0000, Michael Hu (NSBU) wrote: > Hi Everyone, > > When we enable kernel config CONFIG_DEBUG_SECTION_MISMATCH=y and compile DPDK 1.7 with 3.14.17 kernel + gcc 4.8.2, we got lots of warnings like these. > Do we have plan to fix them? If so, please advise on which version. Thanks. > Seems erroneous. These errors come from referencing symbols between incompatible sections (e.g. A static function reading a variable that is in an __initdata section). But theres nothing like that going on in any of these symbols referenced below (and the kernel version shouldn't matter, as this is all dpdk internal). It could be old objects in your build from a DPDK version where the symbols were in different sections. Do a make clean; git clean -f -d Then reconfigure and rebuild. I expect your issue will go away. Neil > > > == Build lib/librte_eal/linuxapp/kni > cut: /proc/version_signature: No such file or directory > LD /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/built-in.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.o > Building modules, stage 2. > MODPOST 1 modules > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.o(.data+0x20): Section mismatch in reference from the variable igbuio_pci_driver to the function .text:igbuio_pci_probe() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.o(.data+0x28): Section mismatch in reference from the variable igbuio_pci_driver to the function .text:igbuio_pci_remove() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.o(.data+0x130): Section mismatch in reference from the variable dev_attr_max_vfs to the function .text:show_max_vfs() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.o(.data+0x138): Section mismatch in reference from the variable dev_attr_max_vfs to the function .text:store_max_vfs() > > CC /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.mod.o > LD [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/igb_uio/igb_uio.ko > INSTALL-MODULE igb_uio.ko > > LD /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/built-in.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_main.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_api.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_common.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_ethtool.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_82599.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_82598.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_x540.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/ixgbe_phy.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/kcompat.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_82575.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_i210.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_api.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_mac.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_manage.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_mbx.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_nvm.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/e1000_phy.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_ethtool.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_hwmon.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_main.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_debugfs.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_param.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_procfs.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/igb_vmdq.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/kni_misc.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/kni_net.o > CC [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/kni_ethtool.o > LD [M] /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/rte_kni.o > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/rte_kni.o(.data+0x20): Section mismatch in reference from the variable ixgbe_ethtool_ops to the function .text:ixgbe_get_settings() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/rte_kni.o(.data+0x28): Section mismatch in reference from the variable ixgbe_ethtool_ops to the function .text:ixgbe_set_settings() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/rte_kni.o(.data+0x30): Section mismatch in reference from the variable ixgbe_ethtool_ops to the function .text:ixgbe_get_drvinfo() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/rte_kni.o(.data+0x38): Section mismatch in reference from the variable ixgbe_ethtool_ops to the function .text:ixgbe_get_regs_len() > > WARNING: /git/Pktgen-DPDK/dpdk/build/build/lib/librte_eal/linuxapp/kni/rte_kni.o(.data+0x40): Section mismatch in reference from the variable ixgbe_ethtool_ops to the function .text:ixgbe_get_regs() > > Thanks, > Michael > > >