latest version would coredump when enable kni

[zhanghaisen]

I enable the kni in config.ini file ,and the start example/helloworld with start.sh script file, the process coredump with bellow backtrace. If I disable kni, this process would not coredump.
`## Kni config: if enabled and method=reject,'
'## all packets that do not belong to the following tcp_port and udp_port'
'## will transmit to kernel; if method=accept, all packets that belong to'
'## the following tcp_port and udp_port will transmit to kernel.'
'[kni]'
enable=1
method=reject
'## The format is same as port_list'
'#tcp_port=80,443'
'#udp_port=53'

(gdb) bt
#0 0x0000000000518e4c in rte_kni_tx_burst ()
#1 0x00000000004b3da3 in ff_kni_process ()
#2 0x00000000004aebbe in main_loop ()
#3 0x00000000004e5693 in rte_eal_mp_remote_launch ()
#4 0x00000000004b22e4 in ff_dpdk_run ()
#5 0x000000000040e54b in main (argc=, argv=) at main.c:139

[whl739]

@jfb8856606
Take a look.

[jfb8856606]

I do the test and it working properly. Show me your os and kernel version, and so on.
Or before you use the latest version, if you have used the version before commit of 76c5926？

[jfb8856606]

@zhanghaisen

'[kni]'
enable=1
method=reject
'## The format is same as port_list'
'#tcp_port=80,443'
'#udp_port=53'``

Try to remove the single quote in section [kni] and test again?
And tcp_port or udp_port should be set, if not all packets will transmit to kernel.

[zhanghaisen]

I used the old kernel modules igb_uio.ko and rte_kni.ko which cause my process coredump. With the related modules,it 's ok.