Hi Everyone,

I am running a DPDK based application on a centOS VM, which uses uio_pci_generic DPDK driver for IO operations. The VM is hosted on a centOS bare-metal. When I try to run, the application crashes and generates a core-dump.

In the application flow, I fetch the port info using rte_eth_dev_info_get() and initialize the DPDK port, it works fine.As part of application logic I am fetching the port info using the same API rte_eth_dev_info_get() in another thread, but the application is crashing while invoking this API.

Below are the VM configuration:

1. DPDK version: 20.11

2. KERNEL DRIVER: virtio

3. DPDK DRIVER: uio_pci_generic

4. VM OS: CentOS 7.9

5. RAM: 8GB

6. CPU: 9

Below are the BM configuration:

1. QEMU-KVM version: 1.5.3

2. Host OS: CentOS 7.9

The same application flow works fine in below combinations:

1. With vfio-pci DPDK driver and same VM and host configuration

2. The host OS is Ubuntu 20.04 and the QEMU-KVM version is 4.2.2.

Could anyone please help me resolve this issue.

Thank you,

Somesh