[openib-general] Errors when loading ib_umad

[Michael Knox]

I'm trying to load the OpenIB driver under Fedora Core 4 x86_64.  I 
downloaded the 2.6.14 smp kernel and successfully replaced the included 
driver with the latest from openib.org and build the modules. I  also 
upgraded to the 4.7 firmware.  Unfortunately modprobe returns some 
interesting errors when loading ib_umad:

[root at l13 ~]# modprobe ib_umad
Killed
[root at l13 ~]#
Message from syslogd at l13 at Wed Jan 11 22:10:41 2006 ...
l13 kernel: Oops: 0000 [1] SMP

Message from syslogd at l13 at Wed Jan 11 22:10:41 2006 ...
l13 kernel: CR2: 000000000e70014c

-----------------
Dmesg reports:
Unable to handle kernel paging request at 000000000e70014c RIP:
<ffffffff801f14cb>{kref_get+4}
PGD 2449db067 PUD 24980a067 PMD 0
Oops: 0000 [1] SMP
CPU 1
Modules linked in: ib_umad parport_pc lp parport autofs4 i2c_dev 
i2c_core sunrpc pcmcia yenta_socket rsrc_nonstatic pcmcia_core video 
button battery ac ipv6 ohci1394 ieee1394 uhci_hcd ehci_hcd nvidia 
hw_random ib_mthca ib_mad ib_core e1000 floppy dm_snapshot dm_zero 
dm_mirror ext3 jbd dm_mod ata_piix libata 3w_9xxx sd_mod scsi_mod
Pid: 2958, comm: modprobe Tainted: P      2.6.14 #1
RIP: 0010:[<ffffffff801f14cb>] <ffffffff801f14cb>{kref_get+4}
RSP: 0000:ffff810241a31d18  EFLAGS: 00010206
RAX: ffff810247ae5560 RBX: 000000000e70014c RCX: 0000000000000007
RDX: ffff810247ae5567 RSI: ffffffff8036370c RDI: 000000000e70014c
RBP: ffff81024770aca0 R08: 0000000000000002 R09: 0000000000000000
R10: ffff81024492a738 R11: ffffffff801da5ca R12: 00000000fffffff4
R13: ffffffff80363705 R14: ffff81024492a738 R15: 000000000e700130
FS:  00002aaaaaac03c0(0000) GS:ffffffff80503880(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 000000000e70014c CR3: 0000000245f2d000 CR4: 00000000000006e0
Process modprobe (pid: 2958, threadinfo ffff810241a30000, task 
ffff8100afc41180)
Stack: 000000000e700130 ffffffff801f08f4 ffff810247ae52c0 ffffffff801be06d
       0000000000000000 0000000000000000 ffff810242c8d3c0 ffff810244067e00
       ffff810244067e00 000000000e700000
Call Trace:<ffffffff801f08f4>{kobject_get+18} 
<ffffffff801be06d>{sysfs_create_link+187}
       <ffffffff8026044c>{class_device_add+393} 
<ffffffff80260620>{class_device_create+168}
       <ffffffff801948fa>{d_instantiate+98} <ffffffff801949ae>{dput+55}
       <ffffffff802611ce>{kobj_map+226} <ffffffff80185d67>{exact_lock+0}
       <ffffffff80185a69>{exact_match+0} 
<ffffffff887422af>{:ib_umad:ib_umad_add_one+498}
       <ffffffff880e6576>{:ib_core:ib_register_client+134}
       <ffffffff88734095>{:ib_umad:ib_umad_init+149} 
<ffffffff8014f7c9>{sys_init_module+272}
       <ffffffff8010db20>{tracesys+209}

Code: 8b 07 85 c0 75 24 b9 20 00 00 00 48 c7 c2 45 2b 36 80 48 c7
RIP <ffffffff801f14cb>{kref_get+4} RSP <ffff810241a31d18>
CR2: 000000000e70014c

Could anyone give me some advice on what I should be investigating to 
resolve these problems?
Thanks,
Mike Knox