[dpdk-dev] freeze with dpdk-2.0.0

[Olivier Deme]

Hi,

I am trying to use DPDK-2.0.0 on Fedora 20 running in a qemu virtual 
machine.
After loading the uio and igb_uio module and setting up hugepages, I try 
to run the helloworld demo application.
As soon as the helloworld displays the "hello from core 1, hello from 
core 0" messages, I loose all network connectivity to the VM.

If I try to run the helloworld application remotely the output freezes 
after the following:
# ./build/helloworld -c 3 -n 2
EAL: Detected lcore 0 as core 0 on socket 0
EAL: Detected lcore 1 as core 0 on socket 0
EAL: Detected lcore 2 as core 0 on socket 0
EAL: Detected lcore 3 as core 0 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 4 lcore(s)
EAL: VFIO modules not all loaded, skip VFIO support...
EAL: Setting up memory...
EAL: Ask a virtual area of 0x7000000 bytes
EAL: Virtual area found at 0x7f273be00000 (size = 0x7000000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f273ba00000 (size = 0x200000)
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f273b600000 (size = 0x200000)
EAL: Ask a virtual area of 0xc00000 bytes
EAL: Virtual area found at 0x7f273a800000 (size = 0xc00000)
EAL: Requesting 64 pages of size 2MB from socket 0
EAL: TSC frequency is ~1995193 KHz
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using 
unreliable clock cycles !
EAL: Master lcore 0 is ready (tid=449e9900;cpuset=[0])
PMD: ENICPMD trace: rte_enic_pmd_init
EAL: lcore 1 is ready (tid=3a7ff700;cpuset=[1])


If I try to restart the network services, I get the error from syslog:
BUG: soft lockup - CPU#2 stuck for 22s!


The network devices exposed to the VM are 2 BCM5719 interfaces + 2 
82599ES interfaces:
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
02:00.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5719 
Gigabit Ethernet PCIe (rev 01)
0d:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit 
SFI/SFP+ Network Connection (rev 01)
0d:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit 
SFI/SFP+ Network Connection (rev 01)


Within the VM, lspci shows:
00:03.0 Ethernet controller: Red Hat, Inc Virtio network device
00:04.0 Ethernet controller: Red Hat, Inc Virtio network device
00:05.0 Ethernet controller: Red Hat, Inc Virtio network device
00:06.0 Ethernet controller: Red Hat, Inc Virtio network device


After loading the kernel modules, I bind the interfaces to DPDK with:
/root/dpdk-2.0.0/tools/dpdk_nic_bind.py --bind=igb_uio 00:05.0
/root/dpdk-2.0.0/tools/dpdk_nic_bind.py --bind=igb_uio 00:06.0

Would you know what is causing this?

I haven't been able to try DPDK 1.8.0 because it doesn't compile on the 
latest Fedora Server 20.

Thanks for your help,
Olivier.


-- 
	*Olivier Demé*
*Druid Software Ltd.*
*Tel: +353 1 202 1831*
*Email: odeme at druidsoftware.com <mailto:odeme at druidsoftware.com>*
*URL: http://www.druidsoftware.com*
Druid Software: Monetising enterprise small cells solutions.


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