[openib-general] [PATCH 1 of 2] Re: ipoib oops

[Shirley Ma]

Hi, Michael,

Does the patch you are working on address below problem? rmmod hcad_mod 
hung in ipoib. This is the task stacks I got on linux-2.6.14 + SVN 4044.

rmmod         D 000000000ff7d030 11248 15681  14007               14061 
(NOTLB)
Call Trace:
[c00000006dd9af10] [c00000006dd9b0f0] 0xc00000006dd9b0f0 (unreliable)
[c00000006dd9b0e0] [c00000000000e468] .__switch_to+0x104/0x180
[c00000006dd9b170] [c000000000394528] .schedule+0x774/0xf34
[c00000006dd9b2b0] [c000000000069238] .flush_cpu_workqueue+0xdc/0x2c0
[c00000006dd9b3c0] [d00000000041f77c] .ipoib_mcast_stop_thread+0x1cc/0x274
[ib_ipoib]
[c00000006dd9b480] [d00000000041c880] .ipoib_ib_dev_down+0x124/0x194 
[ib_ipoib]
[c00000006dd9b520] [d00000000041aed4] .ipoib_stop+0x98/0x188 [ib_ipoib]
[c00000006dd9b5b0] [c0000000002e79e4] .dev_close+0x110/0x118
[c00000006dd9b630] [c0000000002e7afc] .unregister_netdevice+0x110/0x320
[c00000006dd9b6c0] [c0000000002e7d30] .unregister_netdev+0x24/0x40
[c00000006dd9b750] [d00000000041b104] .ipoib_remove_one+0x64/0xc0 
[ib_ipoib]
[c00000006dd9b7e0] [d00000000024e8fc] .ib_unregister_device+0xb4/0x1b4
[ib_core][c00000006dd9b880] [d00000000054a1fc] .ehca_remove+0x9c/0x714 
[hcad_mod]

ipoib         D 0000000000000000 13552 13326     19         13712  3575 
(L-TLB)
Call Trace:
[c0000000f679f760] [c0000000f679f870] 0xc0000000f679f870 (unreliable)
[c0000000f679f930] [c00000000000e468] .__switch_to+0x104/0x180
[c0000000f679f9c0] [c000000000394528] .schedule+0x774/0xf34
[c0000000f679fb00] [c000000000395310] .wait_for_completion+0xc8/0x140
[c0000000f679fbf0] [d00000000041f7c8] .ipoib_mcast_stop_thread+0x218/0x274
[ib_ipoib]
[c0000000f679fcb0] [d00000000041f9c0] .ipoib_mcast_restart_task+0x90/0x410
[ib_ipoib]
[c0000000f679fdb0] [c000000000068a8c] .worker_thread+0x244/0x320
[c0000000f679fed0] [c00000000006fbf8] .kthread+0x178/0x1c8
[c0000000f679ff90] [c0000000000100b8] .kernel_thread+0x4c/0x68

Thanks
Shirley Ma
IBM Linux Technology Center
15300 SW Koll Parkway
Beaverton, OR 97006-6063
Phone(Fax): (503) 578-7638

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