#7973 BLOC 8.2.0 (: libertas unknown event IDs and hang

[Zarro Boogs per Child]

#7973: libertas unknown event IDs and hang
------------------------+---------------------------------------------------
   Reporter:  cjb       |       Owner:  dsaxena             
       Type:  defect    |      Status:  new                 
   Priority:  blocker   |   Milestone:  8.2.0 (was Update.2)
  Component:  kernel    |     Version:  not specified       
 Resolution:            |    Keywords:                      
Next_action:  diagnose  |    Verified:  0                   
  Blockedby:            |    Blocking:                      
------------------------+---------------------------------------------------

Comment(by cjb):

 And again. This time I was using wget, so (as we would suspect) the
 activity updater isn't required to reproduce this, a large download is
 sufficient.

 This time we didn't recover, though.  :(   Attaching the new dmesg.

 {{{
 [ 2598.803031] libertas: Command 50 timed out
 [ 2598.809818] libertas: Excessive timeouts submitting command 50
 [ 2598.809847] Resetting OLPC wireless via EC...
 [ 2598.813097] olpc-ec:  running cmd 0x25
 [ 2598.823137] usb 1-1: USB disconnect, address 4
 [ 2598.823191] libertas: DNLD_CMD: hw_host_to_card failed: -1
 [ 2599.823020] libertas: Command 6 timed out
 [ 2748.789950] INFO: task khubd:327 blocked for more than 120 seconds.
 [ 2748.789982] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
 this
 message.
 [ 2748.790004] khubd         D ce17b0e0  2288   327      2
 [ 2748.790044]        ce8ba8f0 00000046 ce8bab50 ce17b0e0 1dad1f2f
 0000025d ce10
 4e6c ce104e8c
 [ 2748.790094]        7fffffff 7fffffff ce104e7c ce104ea4 c05ec43a
 00000000 0000
 0001 c0426b71
 [ 2748.790142]        00a5de67 00000000 c0426ba9 00000a3b 3b0aefcf
 00000003 ce21
 dd38 ce104ea0
 [ 2748.790190] Call Trace:
 [ 2748.790220]  [<c05ec43a>] schedule_timeout+0x13/0x86
 [ 2748.790256]  [<c0426b71>] ktime_get_ts+0x11/0x3a
 [ 2748.790298]  [<c0426ba9>] ktime_get+0xf/0x2b
 [ 2748.790332]  [<c05ebee0>] wait_for_common+0xc0/0xf9
 [ 2748.790375]  [<c040ff4b>] default_wake_function+0x0/0x8
 [ 2748.790419]  [<c042183b>] flush_cpu_workqueue+0x4c/0x61
 [ 2748.790461]  [<c042189e>] wq_barrier_func+0x0/0x8
 [ 2748.790498]  [<c042187f>] destroy_workqueue+0x2f/0x4e
 [ 2748.790531]  [<d09b1594>] lbs_remove_card+0x9d/0x15d [libertas]
 [ 2748.790645]  [<d09b08b0>] lbs_stop_card+0xe4/0x12d [libertas]
 [ 2748.790721]  [<d0977161>] if_usb_disconnect+0x8d/0xef [usb8xxx]
 [ 2748.790767]  [<d0939492>] usb_unbind_interface+0x2d/0x6e [usbcore]
 [ 2748.790922]  [<c0517f1c>] __device_release_driver+0x5d/0x7b
 [ 2748.790955]  [<c0518292>] device_release_driver+0x2c/0x41
 [ 2748.790985]  [<c0517906>] bus_remove_device+0x62/0x70
 [ 2748.791013]  [<c051657b>] device_del+0xea/0x147
 [ 2748.791053]  [<d0937466>] usb_disable_device+0x5c/0xbb [usbcore]
 [ 2748.791154]  [<d0933e2d>] usb_disconnect+0x86/0xe1 [usbcore]
 [ 2748.791251]  [<d0934b09>] hub_thread+0x302/0xa3a [usbcore]
 [ 2748.791358]  [<c0423fa8>] autoremove_wake_function+0x0/0x2d
 [ 2748.791395]  [<d0934807>] hub_thread+0x0/0xa3a [usbcore]
 [ 2748.791489]  [<c0423ef7>] kthread+0x36/0x5b
 [ 2748.791515]  [<c0423ec1>] kthread+0x0/0x5b
 [ 2748.791542]  [<c0403a4f>] kernel_thread_helper+0x7/0x10
 [ 2748.791577]  =======================
 (END)
 }}}

-- 
Ticket URL: <http://dev.laptop.org/ticket/7973#comment:4>
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