[openib-general] ping problem with ammasso cards(iWARP interface)

[Ravinandan Arakali]

Pradipta,
Following is the output from gdb after core dump. I have also copy-pasted
the gdb output on client system.

Attached is the dmesg output when krping test is run in verbose mode.
The ping data on the sender(client) seems okay. The content is shifted
forward by one character for each packet. On receiver, after receiving ping
pkt 9, it seems to jump to pkt no. 1935. Not sure if it's because messages
can be lost during writing to /var/log/messages ?

-----------------------------------------
(gdb) run -s -vV -C100 -d -a 0.0.0.0 -p 9999
Starting program:
/tmp/ib/src/userspace/librdmacm/examples/.libs/rping -s -vV -C100 -d -a
0.0.0.0 -p 9999
[Thread debugging using libthread_db enabled]
[New Thread -1210054992 (LWP 3668)]
ipaddr (0.0.0.0)
port 9999
created cm_id 0x804e6e0
[New Thread -1210057824 (LWP 3671)]
rdma_bind_addr successful
rdma_listen
cma_event type 4 cma_id 0x804e968 (child)
child cma 0x804e968

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1210054992 (LWP 3668)]
rping_setup_qp (cb=0x0, cm_id=0x804e968) at examples/rping.c:514
514             cb->pd = ibv_alloc_pd(cm_id->verbs);
(gdb) bt
#0  rping_setup_qp (cb=0x0, cm_id=0x804e968) at examples/rping.c:514
#1  0x0804a716 in main (argc=9, argv=Cannot access memory at address 0x6
) at examples/rping.c:767
(gdb)

---------------------------------
(gdb) run -c -vV -C100 -d  -a 17.2.2.102 -p 9999
Starting program:
/tmp/ib/src/userspace/librdmacm/examples/.libs/rping -c -vV -C100 -d  -a
17.2.2.102 -p 9999
[Thread debugging using libthread_db enabled]
[New Thread 47388824908032 (LWP 4620)]
ipaddr (17.2.2.102)
port 9999
created cm_id 0x506b00
[New Thread 1082132800 (LWP 4623)]
cma_event type 0 cma_id 0x506b00 (parent)
cma_event type 2 cma_id 0x506b00 (parent)
rdma_resolve_addr - rdma_resolve_route successful
created pd 0x506e60
created channel 0x506e80
created cq 0x506ea0
created qp 0x506f40
rping_setup_buffers called on cb 0x505010
allocated & registered buffers...
[New Thread 1090525504 (LWP 4624)]
cq_thread started.


-----Original Message-----
From: Pradipta Kumar Banerjee [mailto:bpradip at in.ibm.com]
Sent: Friday, July 07, 2006 1:29 PM
To: Ravinandan Arakali
Cc: bpradip at in.ibm.com; openib-general at openib.org
Subject: Re: [openib-general] ping problem with ammasso cards(iWARP
interface)


Ravinandan Arakali wrote:
> Attached are the outputs when rping and krping are run.
> The dmesg output when krping is run is quite verbose.
> Hopefully, you can throw some light by looking at it.
> The rping server core dumped as soon as the client was run.

Ravi,
  Use the following for krping. You will be able to see the ping data using
dmesg.

echo "server,port=9999,addr=17.2.2.102,validate,verbose" > /proc/krping
echo "client,port=9999,addr=17.2.2.102,validate,verbose" > /proc/krping

As for the rping, can u run rping under gdb (gdb
librdmacm/example/.libs/rping)
and send the backtrace on segfault.

Thanks,
Pradipta
>
> Thanks,
> Ravi
>
>
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