Hi
We are experiencing a openvswitch crash when bringing down the dpdk bond port
using "ovs-ofctl mod-port br-prv dpdk1 down".
backtrace of core is like below. Is there any issue reported earlier for this
type of crash in openvswitch community.
(gdb) bt
#0 ixgbe_rxq_rearm (rxq=0x7fa45061f800) at
/home/sdn/new_cloud_sdn_switch_2/cloud-sdn-switch/dpdk/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c:98
#1 _recv_raw_pkts_vec (split_packet=0x0, nb_pkts=32, rx_pkts=<optimized out>,
rxq=0x7fa45061f800)
at
/home/sdn/new_cloud_sdn_switch_2/cloud-sdn-switch/dpdk/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c:290
#2 ixgbe_recv_pkts_vec (rx_queue=0x7fa45061f800, rx_pkts=<optimized out>,
nb_pkts=<optimized out>)
at
/home/sdn/new_cloud_sdn_switch_2/cloud-sdn-switch/dpdk/drivers/net/ixgbe/ixgbe_rxtx_vec_sse.c:474
#3 0x000000e5000000e4 in ?? ()
#4 0x00000046000000e6 in ?? ()
#5 0x0000006a00000069 in ?? ()
#6 0x0000006c0000006b in ?? ()
#7 0x000000ec0000006d in ?? ()
#8 0x000000ee000000ed in ?? ()
#9 0x00000001537f5780 in ?? ()
#10 0x0000000000000000 in ?? ()
(gdb)
I have analyzed the core and it seems it is a result of device stop and packet
receive from the port happening at same time by two thread
OVS main thread(device stop) and PMD thread(pkt receive). More precisely main
thread cleaning the packet buffer from rxq sw_ring to avoid the
packet buffer leak while in parallel PMD thread is filling the packet buffer in
sw_ring/descriptor ring as part of ixgbe_recv_pkts_vec.
version used is: openvswitch (2.6.1) with dpdk (16.11).
This crash is not every time reproducible but frequency seems to be high.
I am new to openvswitch community and this is first time I am posting a query.
let me know if anything you require from my side.
Thanks
Keshav
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