Description of problem: After output "EAL: Error disabling MSI-X interrupts for fd 538" ,dpdk-testpmd stucked . Version-Release number of selected component (if applicable): dpdk-20.11-1.el8fdb.3.x86_64 How reproducible: always Steps to Reproduce: 1. start a guest with command: virt-install \ --name g1 \ --machine q35 \ --qemu-commandline='-M q35,kernel-irqchip=split -device intel-iommu,device-iotlb=on,intremap=on,caching-mode=true' \ --vcpus=5 \ --ram=8192 \ --disk path=/var/lib/libvirt/images/g1.qcow2,device=disk,bus=virtio,format=qcow2 \ --network bridge=ovsbr0,mac="00:de:ad:01:01:08",model=virtio,virtualport_type=openvswitch,address.type=pci,address.domain=0x0000,address.bus=0x0,address.slot=0x7,address.function=0x0 \ --network bridge=ovsbr0,mac="00:de:ad:01:01:09",model=virtio,virtualport_type=openvswitch,address.type=pci,address.domain=0x0000,address.bus=0x0,address.slot=0x8,address.function=0x0 \ --network bridge=virbr0,model=virtio \ --boot hd \ --accelerate \ --force \ --graphics none \ --os-type=linux \ --noautoconsole 2. install dpdk-20.11-1.el8fdb.3.x86_64 and driverctl ,bind nic to dpdk, setup hugepage # cat /proc/cmdline BOOT_IMAGE=(hd0,msdos1)/vmlinuz-4.18.0-232.el8.x86_64 root=UUID=59af1883-6ac7-4674-a1cf-2eca1d93c125 ro rhgb quiet crashkernel=auto resume=UUID=e4c6e9dc-106d-4f5a-b986-f093f9673bbc console=ttyS0,115200 nohz=on nohz_full=1-8 rcu_nocbs=1-8 tuned.non_isolcpus=00000001 intel_pstate=disable nosoftlockup intel_iommu=on default_hugepagesz=2M hugepagesz=2M hugepages=800 # cat /proc/meminfo |grep -i huge AnonHugePages: 10240 kB ShmemHugePages: 0 kB HugePages_Total: 2048 HugePages_Free: 1536 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB Hugetlb: 4194304 kB # driverctl -v list-devices | grep vfio-pci 0000:00:07.0 vfio-pci [*] (Virtio network device) 0000:00:08.0 vfio-pci [*] (Virtio network device) 3. start dpdk-testpmd with command: dpdk-testpmd -l 0,1,2 -w 0000:00:07.0 -w 0000:00:08.0 -n4 --socket-mem 1024 -- --burst=64 -i --nb-cores=2 --rxq=1 --txq=1 Actual results: EAL: Detected 5 lcore(s) EAL: Detected 1 NUMA nodes Option -w, --pci-whitelist is deprecated, use -a, --allow option instead Option -w, --pci-whitelist is deprecated, use -a, --allow option instead EAL: Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Selected IOVA mode 'VA' EAL: No available hugepages reported in hugepages-1048576kB EAL: Probing VFIO support... EAL: VFIO support initialized EAL: Invalid NUMA socket, default to 0 EAL: Probe PCI driver: net_virtio (1af4:1000) device: 0000:00:07.0 (socket 0) EAL: using IOMMU type 1 (Type 1) EAL: Ignore mapping IO port bar(0) EAL: Invalid NUMA socket, default to 0 EAL: Probe PCI driver: net_virtio (1af4:1000) device: 0000:00:08.0 (socket 0) EAL: Ignore mapping IO port bar(0) EAL: No legacy callbacks, legacy socket not created Interactive-mode selected testpmd: create a new mbuf pool <mb_pool_0>: n=163456, size=2176, socket=0 testpmd: preferred mempool ops selected: ring_mp_mc Configuring Port 0 (socket 0) EAL: Error disabling MSI-X interrupts for fd 538 the software stucked. Expected results:dpdk-testpmd start success Additional info: