krping (4.7 kernel version) crashing with mlx5_core (CX415A), it is passing with mlx4_core(CX354A)

Hi,

I am trying to run krping code which I got from  the below link on the Linux kernel 4.7

GitHub - larrystevenwise/krping: Kernel Mode RDMA Ping

with 4.7 kernel I can able to use mlx4 card (). But it is failing with mlx5 100G (cx415A). It is giving crash from mlx5_core. Please find below logs. Please let me know if you need any further information.

KRPING Client Log:

[  701.240641] krping_init

[  713.858099] krping: proc write
|client,addr=192.168.69.127,port=9999,count=100|

[  713.858106] client

[  713.858109] ipaddr (192.168.69.127)

[  713.858112] port 9999

[  713.858114] count 100

[  713.858122] created cm_id ffff880242e9b000

[  713.858170] cma_event type 0 cma_id ffff880242e9b000
(parent)

[  713.858271] cma_event type 2 cma_id ffff880242e9b000
(parent)

[  713.858282] rdma_resolve_addr - rdma_resolve_route
successful

[  713.858464] created pd ffff880095581cc0

[  713.858812] created cq ffff880252c53a00

[  713.859223] created qp ffff8802530a3800

[  713.859225] krping: krping_setup_buffers called on
cb ffff880242e99c00

[  713.859316] krping: allocated & registered
buffers...

[  713.861548] cma_event type 9 cma_id ffff880242e9b000
(parent)

[  713.861555] ESTABLISHED

[  713.861569] rdma_connect successful

[  713.861575] RDMA addr 24614b640 rkey 1563 len 64

[  713.861963] mlx5_0:dump_cqe:263:(pid 0): dump error
cqe

[  713.861967] 00000000 00000000 00000000 00000000

[  713.861968] 00000000 00000000 00000000 00000000

[  713.861970] 00000000 00000000 00000000 00000000

[  713.861972] 00000000 92005204 0a0000b6 000055d2

[  713.861975] krping: cq completion failed with wr_id
0 status 4 opcode -1 vender_err 52

[  713.861987] krping: wait for RDMA_WRITE_ADV state 10

[  713.862082] krping_free_buffers called on cb
ffff880242e99c00

[  713.863131] destroy cm_id ffff880242e9b000

KR PING SERVER LOG:

[  816.542447] krping_init

[  846.465708] krping: proc write
|server,addr=192.168.69.127,port=9999|

[  846.465717] server

[  846.465721] ipaddr (192.168.69.127)

[  846.465725] port 9999

[  846.465738] created cm_id ffff8804112ffc00

[  846.465750] rdma_bind_addr successful

[  846.465752] rdma_listen

[  852.111109] cma_event type 4 cma_id ffff880429de4800
(child)

[  852.111116] child cma ffff880429de4800

[  852.111379] created pd ffff8804112ed440

[  852.111594] created cq ffff88041470c800

[  852.112100] created qp ffff880429205800

[  852.112106] krping: krping_setup_buffers called on
cb ffff8804112fe800

[  852.112216] krping: allocated & registered
buffers...

[  852.112218] accepting client connection request

[  852.113286] cma_event type 9 cma_id ffff880429de4800
(child)

[  852.113290] ESTABLISHED

[  852.113813] cma_event type 10 cma_id
ffff880429de4800 (child)

[  852.113818] krping: DISCONNECT EVENT...

[  852.113894] krping: wait for CONNECTED state 10

[  852.113899] krping: connect error -1

[  852.113903] krping_free_buffers called on cb
ffff8804112fe800

[  852.115259] destroy cm_id ffff8804112ffc00

[root@xhdipsnvme1 krping-master]# cat /proc/krping