[ofa-general] madeye kernel oops

[Sean Hefty]

How easily can you reproduce this?  I'm assuming that this is with OFED 1.2 on
2.6.20, correct?

Can you describe what you were doing when this crash occurred?

Thanks,
Sean

>Unable to handle kernel NULL pointer dereference at 0000000000000038
>RIP:
> [<ffffffff8801021f>] :ib_mad:ib_unregister_mad_agent+0x11/0x480
>PGD 73387067 PUD 72844067 PMD 0
>Oops: 0000 [1] SMP
>CPU 0
>Modules linked in: ib_madeye i2c_dev i2c_core ib_sdp rdma_cm iw_cm
>ib_addr ib_local_sa ib_uverbs ib_umad ib_mthca ib_ipoib ib_cm ib_sa
>ib_mad ib_core
>Pid: 8917, comm: rmmod Not tainted 2.6.20 #1
>RIP: 0010:[<ffffffff8801021f>]
>[<ffffffff8801021f>] :ib_mad:ib_unregister_mad_agent+0x11/0x480
>RSP: 0000:ffff810071ee1e08  EFLAGS: 00010292
>RAX: 0000000000000000 RBX: 0000000000000020 RCX: 000000000000003f
>RDX: ffff810077ebd6c0 RSI: 0000000000000202 RDI: 0000000000000000
>RBP: 0000000000000000 R08: ffff810077ebd728 R09: 0000000000000003
>R10: 0000000000000000 R11: 0000000000000000 R12: ffff8100766c33c0
>R13: 0000000000000002 R14: 0000000000000880 R15: 0000000000503010
>FS:  00002b3d6689fb00(0000) GS:ffffffff80702000(0000)
>knlGS:0000000000000000
>CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
>CR2: 0000000000000038 CR3: 0000000071086000 CR4: 00000000000006e0
>Process rmmod (pid: 8917, threadinfo ffff810071ee0000, task
>ffff8100781aeee0)
>Stack:  ffff810071ee1e18 ffffffff8022b92f ffff810071ee1e28
>ffffffff80538b43
> ffff810071ee1ea8 ffffffff80538ea2 ffffffff80690880 ffff810071ee1e78
> 000000000000000f 0000000000000020 0000000000000002 ffff8100766c33c0
>Call Trace:
> [<ffffffff8022b92f>] __cond_resched+0x1c/0x44
> [<ffffffff80538b43>] cond_resched+0x2e/0x39
> [<ffffffff80538ea2>] wait_for_completion+0x1a/0xd0
> [<ffffffff88093cf2>] :ib_madeye:madeye_remove_one+0x56/0x88
> [<ffffffff880041aa>] :ib_core:ib_unregister_client+0x40/0xe2
> [<ffffffff8024ae86>] sys_delete_module+0x1b4/0x1e5
> [<ffffffff80340065>] add_uevent_var+0x40/0xe3
> [<ffffffff8026613f>] sys_munmap+0x4b/0x58
> [<ffffffff8020959e>] system_call+0x7e/0x83
>
>
>Code: 83 7f 38 00 0f 84 fd 03 00 00 48 8d 44 24 20 4c 8d 67 f0 48
>RIP  [<ffffffff8801021f>] :ib_mad:ib_unregister_mad_agent+0x11/0x480
> RSP <ffff810071ee1e08>
>CR2: 0000000000000038