[dpdk-dev] virtio PMD issue

[Harish Patil <harish.patil@qlogic.com>]

Hi Huawie/Yuanhan,
I encounter segfault issue in virtio PMD driver when I run any DPDK
application in the VM. The virtio devices should not have been probed in
the first place since they are not attached to igb_uio driver (and managed
by kernel driver).


Network devices using DPDK-compatible driver
============================================
0000:00:09.0 'FastLinQ QL45000 Series 25GbE Controller' drv=igb_uio unused=
0000:00:0a.0 'FastLinQ QL45000 Series 25GbE Controller' drv=igb_uio unused=

Network devices using kernel driver
===================================
0000:00:03.0 'Virtio network device' if= drv=virtio-pci unused=igb_uio



#0 0x00000000004e5392 in vtpci_init (dev=0xb61970, hw=0x7fff76146600)
at /home2/hpatil/dpdk/drivers/net/virtio/virtio_pci.c:653
#1 0x00000000004effc4 in eth_virtio_dev_init (eth_dev=0xacb7a0
<rte_eth_devices>)
at /home2/hpatil/dpdk/drivers/net/virtio/virtio_ethdev.c:1060
#2 0x00000000004b730f in rte_eth_dev_init ()
#3 0x00000000004cb940 in pci_probe_all_drivers ()
#4 0x00000000004cbe88 in rte_eal_pci_probe ()
#5 0x00000000004c0336 in rte_eal_init ()
#6 0x00000000004404e2 in main ()
(gdb) p dev->devargs
$1 = (struct rte_devargs *) 0x0


Looks like its a known issue based on a old thread:
http://dpdk.org/dev/patchwork/patch/12462/

Do we know a fix now?

Thanks,
harish