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* DPDK application crashes with uio_pci_generic DPDK driver
@ 2023-06-23 12:42 SG
  0 siblings, 0 replies; only message in thread
From: SG @ 2023-06-23 12:42 UTC (permalink / raw)
  To: users

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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

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:


   DPDK version: 20.11

   KERNEL DRIVER: virtio

   DPDK DRIVER: uio_pci_generic

   VM OS: CentOS 7.9

   RAM: 8GB

   CPU: 9

Below are the BM configuration:


   QEMU-KVM version: 1.5.3

   Host OS: CentOS 7.9

The same application flow works fine in below combinations:


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

   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,


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