[ofa-general] OFED 1.3 hang in cm_destroy_id()

[akepner at sgi.com]

Eli, Or,

I've gotten a report of a hang very similar to one reported in:
http://lists.openfabrics.org/pipermail/general/2008-June/052275.html

Here's the backtrace of the hung ipoib task:

STACK TRACE FOR TASK: 0xe00003600b070000 (ipoib)

 0 schedule+0x26ec [0xa0000001005a12ac]
 1 wait_for_completion+0x14c [0xa0000001005a198c]
 2 cm_destroy_id+0x66c [0xa00000021531e72c]
 3 ib_destroy_cm_id+0x2c [0xa0000002153210cc]
 4 ipoib_cm_tx_reap+0x17c [0xa000000215719abc]
 5 run_workqueue+0x1dc [0xa0000001000c7f1c]
 6 worker_thread+0x1bc [0xa0000001000c963c]
 7 kthread+0x23c [0xa0000001000d39dc]
 8 kernel_thread_helper+0xcc [0xa0000001000133ec]
 9 start_kernel_thread+0x1c [0xa0000001000094bc]


The cm_id->state is IB_CM_TIMEWAIT, and the refcount is 1.

This is an ia64 system with an MT23108, running OFED 1.3.

Haven't yet been able to reproduce this, however.

-- 
Arthur