The following is a list of general limitations and known issues of the various components of this Mellanox OFED for Linux release.
For the list of old known issues, please refer to Mellanox OFED Archived Known Issues file at: http://www.mellanox.com/pdf/prod_software/MLNX_OFED_Archived_Known_Issues.pdf
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Internal Ref. Number |
Issue |
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2248201 |
Description: During MLNX_OFED installation, the following warning messages related to modules iw_cxgb3 and iw_nes may appear in the log: depmod: WARNING: //lib/modules/4.12.14-195-default/kernel/drivers/infiniband/hw/cxgb3/iw_cxgb3.ko disagrees about version of symbol ib_umem_release depmod: WARNING: //lib/modules/4.12.14-195-default/kernel/drivers/infiniband/hw/nes/iw_nes.ko disagrees about version of symbol ib_unregister_device
These warning messages can be ignored, except for when running on SLES errata kernel, as this issue may prevent the creation of the weak update symbolic links, resulting in the usage of the Inbox driver instead of the MLNX_OFED driver. |
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Workaround: When running on SLES errata kernel, make sure to install MLNX_OFED using the flag --add-kernel-support. |
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Keywords: SLES, RHEL, KMP, weak updates, kmod |
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Discovered in Release: 5.1-0.6.6.0 |
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2209987 |
Description: aRFS feature (activated using "ethtool ntuple on") is disabled for kernel 4.1 or below. |
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Workaround: N/A |
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Keywords: aRFS |
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Discovered in Release: 5.1-0.6.6.0 |
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2200320 |
Description: In case MLNX_OFED is re-installed on a certain system without using --force, the installation may fail requiring the removal of infiniband-diags package. |
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Workaround: Remove the infiniband-diags package using rpm -e. |
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Keywords: Installation, infiniband-diags |
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Discovered in Release: 5.1-0.6.6.0 |
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2248996 |
Description: Downgrading the firmware version for ConnectX-6 cards using "mlnx_ofed_install --fw-update-only --force-fw-update" fails. |
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Workaround: Manually downgrade the firmware version - please see Firmware Update Instructions. |
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Keywords: Firmware, ConnectX-6 |
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Discovered in Release: 5.1-0.6.6.0 |
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2244336 |
Description: AF_XDP is not functional. |
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Workaround: N/A |
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Keywords: AF_XDP |
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Discovered in Release: 5.1-0.6.6.0 |
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2175930 |
Description: When using OFED 5.1 on PPC architectures with kernels v5.5 or v5.6 and an old ethtool utility, a harmless warning call trace may appear in the dmesg due to mismatch between user space and kernel. The warning call trace mentions ethtool_notify. |
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Workaround: Update the ethtool utility to version 5.6 on such systems in order to avoid the call trace. |
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Keywords: PPC, ethtool_notify, kernel |
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Discovered in Release: 5.1-0.6.6.0 |
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2192791 |
Description: The packages neohost-backend and neohost-sdk are not properly removed by the uninstallation procedure and may require manual removal before re-installing or upgrading the MLNX_OFED driver. |
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Workaround: Manually remove the packages by running: rpm -e neohost-backend neohost-sdk |
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Keywords: NEO-Host, SDK |
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Discovered in Release: 5.1-0.6.6.0 |
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2198764 |
Description: If MLNX_OFED is installed on a Debian or Ubuntu system that is run in chroot environment, the openibd service will not be enabled. If the chroot files are being used as a base of a full system, the openibd service is left disabled. |
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Workaround: Currently, openibd is a sysv-init script that you can enable manually by running: update-rc.d openibd defaults |
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Keywords: chroot, Debian , Ubuntu, openibd |
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Discovered in Release: 5.1-0.6.6.0 |
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2237134 |
Description: Running connection tracking (CT) with FW steering may cause CREATE_FLOW_TABLE command to fail with syndrome. |
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Workaround: Configure OVS to use a single handler-thread: #ovs-vsctl set Open_vSwitch . other_config:n-handler-threads=1 |
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Keywords: Connection tracking, ASAP, OVS, FW steering |
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Discovered in Release: 5.1-0.6.6.0 |
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2239894 |
Description: Running OpenVSwitch offload with high traffic throughput can cause low insertion rate due to high CPU usage. |
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Workaround: Reduce the number of combined channels of the uplink using "ethtool -L". |
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Keywords: Insertion rate, ASAP2 |
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Discovered in Release: 5.1-0.6.6.0 |
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2240671 |
Description: Header rewrite action is not supported over RHEL/CentOS 7.4. |
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Workaround: N/A |
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Keywords: ASAP, header rewrite, RHEL, RedHat, CentOS, OS |
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Discovered in Release: 5.1-0.6.6.0 |
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2242546 |
Description: Tunnel offload (encap/decap) may cause kernel panic if nf_tables module is not probed. |
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Workaround: Make sure to probe the nf_tables module before inserting any rule. |
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Keywords: Kernel v5.7, ASAP, kernel panic |
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Discovered in Release: 5.1-0.6.6.0 |
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2244416 |
Description: Configuring "other" channels over one representor is not supported and may cause a call trace. |
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Workaround: N/A |
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Keywords: ASAP, SwitchDev, ethtool, representor |
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Discovered in Release: 5.1-0.6.6.0 |
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2143007 |
Description: IPsec packets are dropped during heavy traffic due to a bug in net/xfrm Linux Kernel. |
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Workaround: Make sure the Kernel is modified to apply the following patch: "xfrm: Fix double ESP trailer insertion in IPsec crypto offload". |
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Keywords: IPsec, xfrm |
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Discovered in Release: 5.1-0.6.6.0 |
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2225952 |
Description: VF mirroring with TC policy skip_sw is not supported on RHEL/CentOS 7.4, 7.5 and 7.6 OSs. |
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Workaround: N/A |
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Keywords: ASAP2, Mirroring, RHEL, RedHat, OS |
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Discovered in Release: 5.1-0.6.6.0 |
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2216521 |
Description: After upgrading MLNX_OFED from v5.0 or earlier, ibdev2netdev utility changes the installation prefix to /usr/sbin. Therefore, it cannot be found while found in the same SHELL environment. |
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Workaround: After installing MLNX_OFED, log out and log in again to refresh the SHELL environment. |
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Keywords: ibdev2netdev |
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Discovered in Release: 5.1-0.6.6.0 |
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2202520 |
Description: Rules with VLAN push/pop, encap/decap and header rewrite actions together are not supported. |
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Workaround: N/A |
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Keywords: ASAP2, SwitchDev, VLAN push/pop, encap/decap, header rewrite |
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Discovered in Release: 5.1-0.6.6.0 |
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2210752 |
Description: Switching from Legacy mode to SwitchDev mode and vice-versa while TC rules exist on the NIC will result in failure. |
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Workaround: Before attempting to switch mode, make sure to delete all TC rules on the NIC or stop OpenvSwitch. |
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Keywords: ASAP2, Devlink, Legacy SR-IOV |
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Discovered in Release: 5.1-0.6.6.0 |
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2125036/2125031 |
Description: Upgrading the MLNX_OFED from an UPSTREAM_LIBS based version to an MLNX_LIBS based version fails unless the driver is uninstalled and then re-installed. |
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Workaround: Make sure to uninstall and re-install MLNX_OFED to complete the upgrade. |
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Keywords: Installation, UPSTREAM_LIBS, MLNX_LIBS |
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Discovered in Release: 5.0-2.1.8.0 |
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2105447 |
Description: hns_roce warning messages will appear in the dmesg after reboot on Euler2 SP3 OSs. |
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Workaround: N/A |
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Keywords: hns_roce, dmesg, Euler |
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Discovered in Release: 5.0-2.1.8.0 |
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2110321 |
Description: Multiple driver restarts may cause IPoIB soft lockup. |
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Workaround: N/A |
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Keywords: Driver restart, IPoIB |
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Discovered in Release: 5.0-2.1.8.0 |
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2112251 |
Description: On kernels 4.10-4.14, when Geneve tunnel's remote endpoint is defined using IPv6, packets larger than MTU are not fragmented, resulting in no traffic sent. |
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Workaround: Define geneve tunnel's remote endpoint using IPv4. |
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Keywords: Kernel, Geneve, IPv4, IPv6, MTU, fragmentation |
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Discovered in Release: 5.0-2.1.8.0 |
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2119210 |
Description: Multiple driver restarts may cause a stress and result in mlx5 commands check error message in the log. |
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Workaround: N/A |
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Keywords: Driver restart, syndrome, error message |
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Discovered in Release: 5.0-2.1.8.0 |
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2118956 |
Description: mlx5dv_dr API does not support sub functions (SFs) as destination actions. |
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Workaround: Create the SFs only after domain creation. |
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Keywords: mlx5dv_dr, sub functions, SF |
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Discovered in Release: 5.0-2.1.8.0 |
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2102902 |
Description: A kernel panic may occur over RH8.0-4.18.0-80.el8.x86_64 OS when opening kTLS offload connection due to a bug in kernel TLS stack. |
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Workaround: N/A |
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Keywords: TLS offload, mlx5e |
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Discovered in Release: 5.0-2.1.8.0 |
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2111534 |
Description: A Kernel panic may occur over Ubuntu19.04-5.0.0-38-generic OS when opening kTLS offload connection due to a bug in the Kernel TLS stack. |
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Workaround: N/A |
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Keywords: TLS offload, mlx5e |
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Discovered in Release: 5.0-2.1.8.0 |
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2117845 |
Description: Relaxed ordering memory regions are not supported when working with CAPI. Registering memory region with relaxed ordering while CAPI enabled will result in a registration failure. |
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Workaround: N/A |
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Keywords: Relaxed ordering, memory region, MR, CAPI |
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Discovered in Release: 5.0-2.1.8.0 |
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2083942 |
Description: The content of file /sys/class/net/ |
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Workaround: Run ethtool -S <NETIF> to show the actual multicast counters and to update the content of file /sys/class/net/ |
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Keywords: Multicast counters |
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Discovered in Release: 5.0-1.0.0.0 |
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2035950 |
Description: An internal error might take place in the firmware when performing any of the following in VF LAG mode, when at least one VF of either PF is still bound/attached to a VM.
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Workaround: N/A |
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Keywords: VF LAG, binding, firmware, FW, PF, SR-IOV |
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Discovered in Release: 5.0-1.0.0.0 |
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2094176 |
Description: When running in a large scale in VF-LAG mode, bandwidth may be unstable. |
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Workaround: N/A |
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Keywords: VF LAG |
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Discovered in Release: 5.0-1.0.0.0 |
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2044544 |
Description: When working with OSs with Kernel v4.10, bonding module does not allow setting MTUs larger than 1500 on a bonding interface. |
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Workaround: Upgrade your Kernel version to v4.11 or above. |
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Keywords: Bonding, MTU, Kernel |
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Discovered in Release: 5.0-1.0.0.0 |
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1882932 |
Description: Libibverbs dependencies are removed during OFED installation, requiring manual installation of libraries that OFED does not reinstall. |
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Workaround: Manually install missing packages. |
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Keywords: libibverbs, installation |
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Discovered in Release: 5.0-1.0.0.0 |
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2058535 |
Description: ibdev2netdev command returns duplicate devices with different ports in SwitchDev mode. |
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Workaround: Use /opt/mellanox/iproute2/sbin/rdma link show command instead. |
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Keywords: ibdev2netdev |
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Discovered in Release: 5.0-1.0.0.0 |
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2072568 |
Description: In RHEL/CentOS 7.2 OSs, adding drop rules when act_gact is not loaded may cause a kernel crash. |
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Workaround: Preload all needed modules to avoid such a scenario (cls_flower, act_mirred, act_gact, act_tunnel_key and act_vlan). |
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Keywords: RHEL/CentOS 7.2, Kernel 4.9, call trace, ASAP |
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Discovered in Release: 5.0-1.0.0.0 |
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2093698 |
Description: VF LAG configuration is not supported when the NUM_OF_VFS configured in mlxconfig is higher than 64. |
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Workaround: N/A |
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Keywords: VF LAG, SwitchDev mode, ASAP |
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Discovered in Release: 5.0-1.0.0.0 |
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2093746 |
Description: Devlink health dumps are not supported on kernels lower than v5.3. |
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Workaround: N/A |
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Keywords: Devlink, health report, dump |
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Discovered in Release: 5.0-1.0.0.0 |
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2000590 |
Description: Sending packets larger than MTU is not supported when working with OVS-DPDK. |
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Workaround: N/A |
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Keywords: MTU, OVS-DPDK |
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Discovered in Release: 5.0-1.0.0.0 |
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2062900 |
Description: Moving VF from SwitchDev mode to Legacy mode while the representor is being used by OVS-DPDK results in a segmentation fault. |
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Workaround: To move VF to Legacy mode with no error, make sure to delete the ports from the OVS. |
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Keywords: SwitchDev, Legacy, representor, OVS-DPDK |
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Discovered in Release: 5.0-1.0.0.0 |
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2075942 |
Description: Huge pages configuration is lost each time the server is configured. |
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Workaround: Re-configure the huge pages after each reboot, or configure them as a kernel parameter. |
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Keywords: Huge pages, reboot, OVS-DPDK |
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Discovered in Release: 5.0-1.0.0.0 |
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2083427 |
Description: For kernels with connection tracking support, neigh update events are not supported, requiring users to have static ARPs to work with OVS and VxLAN. |
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Workaround: N/A |
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Keywords: VxLAN, VF LAG, neigh, ARP |
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Discovered in Release: 5.0-1.0.0.0 |
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2067012 |
Description: MLNX_OFED cannot be installed on Debian 9.11 OS in SwitchDev mode. |
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Workaround: Install OFED with the flag --add-kernel-support. |
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Keywords: ASAP, SwitchDev, Debian, Kernel |
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Discovered in Release: 5.0-1.0.0.0 |
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2067746 |
Description: When attaching a second slave to a bond, some bond interface GIDs might disappear. |
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Workaround: Re-create and re-configure the bond device. |
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Keywords: Bond, GID |
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Discovered in Release: 5.0-1.0.0.0 |
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2036572 |
Description: When using a thread domain and the lockless rdma-core ibv_post_send path, there is an additional CPU penalty due to required barriers around the device MMIO buffer that were omitted in MLNX_OFED. |
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Workaround: N/A |
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Keywords: rdma-core, write-combining, MMIO buffer |
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Discovered in Release: 5.0-1.0.0.0 |
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- |
Description: The argparse module is installed by default in Python versions =>2.7 and >=3.2. In case an older Python version is used, the argparse module is not installed by default. |
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Workaround: Install the argparse module manually. |
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Keywords: Python, MFT, argparse, installation |
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Discovered in Release: 4.7-3.2.9.0 |
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1997230 |
Description: Running mlxfwreset or unloading mlx5_core module while contrak flows are offloaded may cause a call trace in the kernel. |
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Workaround: Stop OVS service before calling mlxfwreset or unloading mlx5_core module. |
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Keywords: Contrak, ASAP, OVS, mlxfwrest, unload |
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Discovered in Release: 4.7-3.2.9.0 |
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1955352 |
Description: Moving 2 ports to SwitchDev mode in parallel is not supported. |
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Workaround: N/A |
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Keywords: ASAP, SwitchDev |
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Discovered in Release: 4.7-3.2.9.0 |
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1979958 |
Description: VxLAN IPv6 offload is not supported over CentOS/RHEL v7.2 OSs. |
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Workaround: N/A |
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Keywords: Tunnel, VXLAN, ASAP, IPv6 |
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Discovered in Release: 4.7-3.2.9.0 |
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1980884 |
Description: Setting VF VLAN, state and spoofchk using ip link tool is not supported in SwitchDev mode. |
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Workaround: N/A |
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Keywords: ASAP, ip tool, VF, SwitchDev |
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Discovered in Release: 4.7-3.2.9.0 |
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1991710 |
Description: PRIO_TAG_REQUIRED_EN configuration is not supported and may cause call trace. |
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Workaround: N/A |
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Keywords: ASAP, PRIO_TAG, mstconfig |
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Discovered in Release: 4.7-3.2.9.0 |
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1970429 |
Description: With HW offloading in SR-IOV SwitchDev mode, the fragmented ICMP echo request/reply packets (with length larger than MTU) do not function properly. The correct behavior is for the fragments to miss the offloading flow and go to the slow path. However, the current behavior is as follows.
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Workaround: N/A |
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Keywords: HW offloading, SR-IOV, SwitchDev, ICMP, VM, virtualization |
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Discovered in Release: 4.7-3.2.9.0 |
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1967866 |
Description: Enabling ECMP offload requires the VFs to be unbound and VMs to be shut down. |
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Workaround: N/A |
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Keywords: ECMP, Multipath, ASAP2 |
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Discovered in Release: 4.7-3.2.9.0 |
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1921981 |
Description: On Ubuntu, Debian and RedHat 8 and above OSS, parsing the mfa2 file using the mstarchive might result in a segmentation fault. |
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Workaround: Use mlxarchive to parse the mfa2 file instead. |
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Keywords: MFT, mfa2, mstarchive, mlxarchive, Ubuntu, Debian, RedHat, operating system |
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Discovered in Release: 4.7-1.0.0.1 |
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1840288 |
Description: MLNX_OFED does not support XDP features on RedHat 7 OS, despite the declared support by RedHat. |
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Workaround: N/A |
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Keywords: XDP, RedHat |
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Discovered in Release: 4.7-1.0.0.1 |
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1821235 |
Description: When using mlx5dv_dr API for flow creation, for flows which execute the "encapsulation" action or "push vlan" action, metadata C registers will be reset to zero. |
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Workaround: Use the both actions at the end of the flow process. |
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Keywords: Flow steering |
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Discovered in Release: 4.7-1.0.0.1 |
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1888574 |
Description: Kernel support limitations in the current MLNX_OFED version:
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Workaround: N/A |
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Keywords: SwitchDev, ASAP, Kernel , SR-IOV, RedHat, RHEL |
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Discovered in Release: 4.7-1.0.0.1 |
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1892663 |
Description: mlnx_tune script does not support python3 interpreter. |
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Workaround: Run mlnx_tune with python2 interpreter only. |
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Keywords: mlnx_tune, python3, python2 |
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Discovered in Release: 4.7-1.0.0.1 |
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1504785 |
Description: A lost interrupt issue in pass-through virtual machines may prevent the driver from loading, followed by printing managed pages errors to the dmesg. |
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Workaround: Restart the driver. |
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Keywords: VM, virtual machine |
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Discovered in Release: 4.6-1.0.1.1 |
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1764415 |
Description: Unbinding PFs on LAG devices results in a "Failed to modify QP to RESET" error message. |
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Workaround: N/A |
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Keywords: RoCE LAG, unbind, PF, RDMA |
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Discovered in Release: 4.6-1.0.1.1 |
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1806565 |
Description: RoCE default GIDs v1 and v2 are derived from the MAC address of the corresponding netdevice's PCI function, and they resemble the IPv6 address. However, in systems where the IPv6 link local address generated does not depend on the MAC address, RoCEv2 default GID should not be used. |
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Workaround: Use RoCEv2 default GID. |
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Keywords: RoCE |
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Discovered in Release: 4.6-1.0.1.1 |
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1834997 |
Description: When working with VF Lag while the bond device is in active-active mode, traffic on both physical ports may not reach line rate. |
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Workaround: N/A |
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Keywords: VF LAG, bonding, bandwidth degradation, fairness |
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Discovered in Release: 4.6-1.0.1.1 |
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- |
Description: Aging is not functional on bond device in RHEL 7.6. |
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Workaround: N/A |
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Keywords: VF LAG, ASAP2 |
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Discovered in Release: 4.6-1.0.1.1 |
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1747774 |
Description: In VF LAG mode, outgoing traffic in load balanced mode is according to the origin ring, thus, half of the rings will be coupled with port 1 and half with port 2. All the traffic on the same ring will be sent from the same port. |
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Workaround: N/A |
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Keywords: VF LAG, ASAP2 |
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Discovered in Release: 4.6-1.0.1.1 |
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1735161 |
Description: Innova cards do no support InfiniBand mode. |
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Workaround: N/A |
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Keywords: Innova, IB, InfiniBand |
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Discovered in Release: 4.6-1.0.1.1 |
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1787667 |
Description: NVMe-oF driver of MLNX OFED v4.6-x.x.x.x does not function on SLES12 SP4 and SLES15 SP1 OSs, as they have a built-in NVME driver in the Linux image. Therefore, Mellanox NVME and NVME-oF drivers cannot be loaded. For tracking purposes of this bug, see Bugzilla issue #1150850 and Bugzilla issue #1150846. |
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Workaround: Change the kernel configuration of NVMe-oF driver to be "=m" and recompile the kernel. |
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Keywords: NVME-oF, NVME, SLES |
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Discovered in Release: 4.6-1.0.1.1 |
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1753629 |
Description: A bonding bug found in Kernels 4.12 and 4.13 may cause a slave to become permanently stuck in BOND_LINK_FAIL state. As a result, the following message may appear in dmesg: bond: link status down for interface eth1, disabling it in 100 ms |
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Workaround: N/A |
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Keywords: Bonding, slave |
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Discovered in Release: 4.6-1.0.1.1 |
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1712068 |
Description: Uninstalling MLNX_OFED automatically results in the uninstallation of several libraries that are included in the MLNX_OFED package, such as InfiniBand-related libraries. |
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Workaround: If these libraries are required, reinstall them using the local package manager (yum/dnf). |
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Keywords: MLNX_OFED libraries |
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Discovered in Release: 4.6-1.0.1.1 |
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- |
Description: Due to changes in libraries, MFT v4.11.0 and below are not forward compatible with MLNX_OFED v4.6-1.0.0.0 and above. Therefore, with MLNX_OFED v4.6-1.0.0.0 and above, it is recommended to use MFT v4.12.0 and above. |
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Workaround: N/A |
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Keywords: MFT compatible |
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Discovered in Release: 4.6-1.0.1.1 |
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1730840 |
Description: On ConnectX-4 HCAs, GID index for RoCE v2 is inconsistent when toggling between enabled and disabled interface modes. |
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Workaround: N/A |
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Keywords: RoCE v2, GID |
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Discovered in Release: 4.6-1.0.1.1 |
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1717428 |
Description: On kernels 4.10-4.14, MTUs larger than 1500 cannot be set for a GRE interface with any driver (IPv4 or IPv6). |
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Workaround: Upgrade your kernel to any version higher than v4.14. |
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Keywords: Fedora 27, gretap, ip_gre, ip_tunnel, ip6_gre, ip6_tunnel |
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Discovered in Release: 4.6-1.0.1.1 |
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1748343 |
Description: Driver reload takes several minutes when a large number of VFs exists. |
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Workaround: N/A |
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Keywords: VF, SR-IOV |
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Discovered in Release: 4.6-1.0.1.1 |
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1748537 |
Description: Cannot set max Tx rate for VFs from the ARM. |
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Workaround: N/A |
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Keywords: Host control, max Tx rate |
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Discovered in Release: 4.6-1.0.1.1 |
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1732940 |
Description: Software counters not working for representor net devices. |
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Workaround: N/A |
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Keywords: mlx5, counters, representors |
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Discovered in Release: 4.6-1.0.1.1 |
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1733974 |
Description: Running heavy traffic (such as 'ping flood') while bringing up and down other mlx5 interfaces may result in “INFO: rcu_preempt dectected stalls on CPUS/tasks:” call traces. |
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Workaround: N/A |
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Keywords: mlx5 |
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Discovered in Release: 4.6-1.0.1.1 |
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1731939 |
Description: Get/Set Forward Error Correction FEC configuration is not supported on ConnectX-6 HCAs with 200Gbps speed rate. |
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Workaround: N/A |
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Keywords: Forward Error Correction, FEC, 200Gbps |
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Discovered in Release: 4.6-1.0.1.1 |
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- |
Description: On ConnectX-6 HCAs and above, an attempt to configure advertisement (any bitmap) will result in advertising the whole capabilities. |
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Workaround: N/A |
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Keywords: 200Gmbps, advertisement, Ethtool |
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Discovered in Release: 4.6-1.0.1.1 |
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1699289 |
Description: HW LRO feature is disabled OOB, which results in increased CPU utilization on the Receive side. On ConnectX-5 adapter cards and above, this causes a bandwidth drop for a few streams. |
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Workaround: Make sure to enable HW LRO in the driver: ethtool -k <intf> lro ethtool --set-priv-flag <intf> hw_lro on |
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Keywords: HW LRO, ConnectX-5 and above |
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Discovered in Release: 4.5-1.0.1.0 |
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1403313 |
Description: Attempting to allocate an excessive number of VFs per PF in operating systems with kernel versions below v4.15 might fail due to a known issue in the Kernel. |
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Workaround: Make sure to update the Kernel version to v4.15 or above. |
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Keywords: VF, PF, IOMMU, Kernel, OS |
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Discovered in Release: 4.5-1.0.1.0 |
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- |
Description: NEO-Host is not supported on the following OSs:
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Workaround: N/A |
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Keywords: NEO-Host, operating systems |
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Discovered in Release: 4.5-1.0.1.0 |
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1521877 |
Description: On SLES 12 SP1 OSs, a kernel tracepoint issue may cause undefined behavior when inserting a kernel module with a wrong parameter. |
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Workaround: N/A |
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Keywords: mlx5 driver, SLES 12 SP1 |
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Discovered in Release: 4.5-1.0.1.0 |