[dpdk-dev] Segfault when eal thread executing mlx5 nic‘s lsc event

[wangyunjian]

I think the flow list may be accessed in the same time by two
different threads and may cause some errors. Do it need a lock
to protect the flow list?

Thanks
          Yunjian

(gdb) bt
#0 0x00007f54c9641237 in raise () from /usr/lib64/libc.so.6
#1 0x00007f54c9642928 in abort () from /usr/lib64/libc.so.6
#2 0x00000000006a8749 in PAT_abort ()
#3 0x00000000006a588d in patchIllInsHandler ()
#4 <signal handler called>
#5 0x00007f54c6acd2c8 in flow_list_destroy (dev=dev at entry=0xad8940 <rte_eth_devices+16512>, flow=0x1444b1b00, list=0x14455e618)
at /usr/src/debug/dpdk-mlx4-pmd-18.11/drivers/net/mlx5/mlx5_flow.c:2150
#6 0x00007f54c6acfe1b in mlx5_flow_list_flush (dev=0xad8940 <rte_eth_devices+16512>, list=0x14455e618) at /usr/src/debug/dpdk-mlx4-pmd-18.11/drivers/net/mlx5/mlx5_flow.c:2170
#7 0x00007f54c6ac5cc4 in mlx5_traffic_disable (dev=<optimized out>) at /usr/src/debug/dpdk-mlx4-pmd-18.11/drivers/net/mlx5/mlx5_trigger.c:384
#8 0x00007f54c6ac637d in mlx5_traffic_restart (dev=0xad8940 <rte_eth_devices+16512>) at /usr/src/debug/dpdk-mlx4-pmd-18.11/drivers/net/mlx5/mlx5_trigger.c:400
#9 0x00007f54d1db3bba in rte_eth_dev_default_mac_addr_set (port_id=<optimized out>, addr=0x140200f40) at /usr/src/debug/dpdk-18.11/lib/librte_ethdev/rte_ethdev.c:3230
#10 0x00007f54cd8dee81 in mac_address_slaves_update (bonded_eth_dev=bonded_eth_dev at entry=0xad48c0 <rte_eth_devices>) at /usr/src/debug/dpdk-18.11/drivers/net/bonding/rte_eth_bond_pmd.c:1842
#11 0x00007f54cd8e0c31 in bond_ethdev_lsc_event_callback (port_id=<optimized out>, type=<optimized out>, param=<optimized out>, ret_param=<optimized out>)
at /usr/src/debug/dpdk-18.11/drivers/net/bonding/rte_eth_bond_pmd.c:3070
#12 0x00007f54cd8e117b in bond_ethdev_slave_lsc_delay (cb_arg=0xad48c0 <rte_eth_devices>) at /usr/src/debug/dpdk-18.11/drivers/net/bonding/rte_eth_bond_pmd.c:2298
#13 0x00007f54d25ebe5f in eal_alarm_callback (arg=<optimized out>) at /usr/src/debug/dpdk-18.11/lib/librte_eal/linuxapp/eal/eal_alarm.c:90
#14 0x00007f54d25ea8aa in eal_intr_process_interrupts (nfds=<optimized out>, events=<optimized out>) at /usr/src/debug/dpdk-18.11/lib/librte_eal/linuxapp/eal/eal_interrupts.c:838
#15 eal_intr_handle_interrupts (totalfds=<optimized out>, pfd=21) at /usr/src/debug/dpdk-18.11/lib/librte_eal/linuxapp/eal/eal_interrupts.c:885
#16 eal_intr_thread_main (arg=<optimized out>) at /usr/src/debug/dpdk-18.11/lib/librte_eal/linuxapp/eal/eal_interrupts.c:965
#17 0x00007f54cade6dd5 in start_thread () from /usr/lib64/libpthread.so.0
#18 0x00007f54c970950d in clone () from /usr/lib64/libc.so.6