[openib-general] Re: CM oops.

[Libor Michalek]

On Fri, Jan 21, 2005 at 04:50:58PM -0800, Sean Hefty wrote:
> Libor Michalek wrote:
> >   I am seeing a oops on a system which is receiving a passive
> > connection request. It occurs whether I'm listening on a masked
> > service ID or an exact service ID. The oops is the same as if I
> > connect to a system on which there is no active listen at all.
> > The svn revision is 1623
> 
> Can you try changing the cm_recv_handler() routine to call INIT_WORK in 
> place of PREPARE_WORK?  I think that this is the reason for the oops. 
> (I can't easily generate a patch for you at the moment.)

OK, different oops now. I'd take a closer look, but I'm now working on the
active connect side, which is going to take some doing before getting to
the CM part, I need to hook into ipoib address resolution...

-Libor


Oops: 0002 [#1]
SMP 
Modules linked in: ib_sdp ib_ipoib ib_cm ib_umad ib_sa ib_mthca ib_mad ib_core ipv6 parport_pc lp parport autofs4 e1000 af_packet ide_cd cdrom sg microcode dm_mod uhci_hcd usbcore video thermal processor fan button battery ac ext3 jbd
CPU:    3
EIP:    0060:[<f8aab2f3>]    Tainted: GF     VLI
EFLAGS: 00010202   (2.6.10) 
EIP is at cm_req_handler+0x2a3/0x4b0 [ib_cm]
eax: 00000000   ebx: 00000000   ecx: 00000012   edx: 00000000
esi: f51d72c4   edi: 00000000   ebp: f516e0cc   esp: f6095f14
ds: 007b   es: 007b   ss: 0068
Process ib_cm/3 (pid: 3883, threadinfo=f6094000 task=f734e020)
Stack: 00000014 00000078 c2034060 00000003 f51d72fc f51d7880 f51d7080 f51d7280 
       f51d7280 f516e08c f51cc180 00000212 f8aad508 f51d7280 f51d7284 c012f87d 
       f5b8b020 f734e020 00000000 f51cc1a0 f6094000 f51d7280 f8aad490 f6094000 
Call Trace:
 [<f8aad508>] cm_recv_work_handler+0x78/0x120 [ib_cm]
 [<c012f87d>] worker_thread+0x1bd/0x260
 [<f8aad490>] cm_recv_work_handler+0x0/0x120 [ib_cm]
 [<c011c2b0>] default_wake_function+0x0/0x10
 [<c011c2b0>] default_wake_function+0x0/0x10
 [<c012f6c0>] worker_thread+0x0/0x260
 [<c01336ec>] kthread+0x9c/0xb0
 [<c0133650>] kthread+0x0/0xb0
 [<c01022dd>] kernel_thread_helper+0x5/0x18
Code: 4a c0 e8 04 83 e0 0f 89 47 3c c6 47 40 02 8b 45 70 0f c8 83 e0 3f c6 47 42 02 88 47 41 0f b6 45 77 c0 e8 03 88 47 43 89 d7 89 d8 <f3> ab 8b 45 7c 89 02 8b 85 80 00 00 00 89 42 04 8b 85 84 00 00