[PROBLEM] USB Storage & D state processes

[Srihari Vijayaraghavan <sriharivijayaraghavan@yahoo.com.au>]

Hardware:
Athlon 64
VIA K8T 800

Software:
FC4
2.6.14-rc2 (vanilla)

Few usb-storage process are stuck in D state:
usb-storage   D 000000000000000a     0  8176      1   
      8250  3455 (L-TLB)
ffff8100121bfe08 0000000000000046 000000000000026b
ffff81002ec8d870
       ffff81002a47c750 ffffffff802f2750
ffff8100121bfe38 0000000000000046
       00000000000000c1 ffffffff803e6110
Call Trace:<ffffffff802f2750>{thread_return+0}
<ffffffff802f2bba>{wait_for_completion+154}
       <ffffffff8012ecd0>{default_wake_function+0}
<ffffffff80145dd0>{kthread_stop+128}
      
<ffffffff88001635>{:scsi_mod:scsi_host_dev_release+69}
       <ffffffff801dd8a1>{kobject_cleanup+97}
<ffffffff801dd900>{kobject_release+0}
       <ffffffff801de0f0>{kref_put+96}
<ffffffff882401a4>{:usb_storage:usb_stor_control_thread+500}
       <ffffffff8010f3b6>{child_rip+8}
<ffffffff8823ffb0>{:usb_storage:usb_stor_control_thread+0}
       <ffffffff8010f3ae>{child_rip+0}

usb-storage   D 000000000000000a     0  9569      1   
     16314  8250 (L-TLB)
ffff81000fdcfda8 0000000000000046 0000000000000233
ffff81000b5315f0
       ffff810037b14910 ffffffff8823ec40
ffffffff8012ecd0 0000000000100100
       0000000000200200 ffffffff803544b0
Call
Trace:<ffffffff8823ec40>{:usb_storage:usb_stor_msg_common+336}
       <ffffffff8012ecd0>{default_wake_function+0}
<ffffffff802f355e>{__down+222}
       <ffffffff8012ecd0>{default_wake_function+0}
<ffffffff802f31f3>{__down_failed+53}
      
<ffffffff880015f0>{:scsi_mod:scsi_host_dev_release+0}
       <ffffffff801460d1>{.text.lock.kthread+5}
<ffffffff88001635>{:scsi_mod:scsi_host_dev_release+69}
       <ffffffff801dd8a1>{kobject_cleanup+97}
<ffffffff801dd900>{kobject_release+0}
       <ffffffff801de0f0>{kref_put+96}
<ffffffff882401a4>{:usb_storage:usb_stor_control_thread+500}
       <ffffffff8010f3b6>{child_rip+8}
<ffffffff8823ffb0>{:usb_storage:usb_stor_control_thread+0}
       <ffffffff8010f3ae>{child_rip+0}
usb-storage   D 000000000000000a     0 16314      1   
            9569 (L-TLB)
ffff81000d32dda8 0000000000000046 000000000000027e
ffff81000b530850
       ffff81002a47d4f0 ffffffff8823ec40
0000000000000000 ffff81000d32c000
       ffff81000b530f20 ffffffff803544b0
Call
Trace:<ffffffff8823ec40>{:usb_storage:usb_stor_msg_common+336}
       <ffffffff802f355e>{__down+222}
<ffffffff8012ecd0>{default_wake_function+0}
       <ffffffff802f31f3>{__down_failed+53}
<ffffffff880015f0>{:scsi_mod:scsi_host_dev_release+0}
       <ffffffff801460d1>{.text.lock.kthread+5}
<ffffffff88001635>{:scsi_mod:scsi_host_dev_release+69}
       <ffffffff801dd8a1>{kobject_cleanup+97}
<ffffffff801dd900>{kobject_release+0}
       <ffffffff801de0f0>{kref_put+96}
<ffffffff882401a4>{:usb_storage:usb_stor_control_thread+500}
       <ffffffff8010f3b6>{child_rip+8}
<ffffffff8823ffb0>{:usb_storage:usb_stor_control_thread+0}
       <ffffffff8010f3ae>{child_rip+0}

Yum is in the middle of updating the system, & I think
it's stuck due to these problems. If possible I'd love
to avoid any reboots/restarts etc., so that yum may
complete its job :-(.

I have nothing mounted through usb storage ATM, though
I must have had something earlier today.

Thanks
Hari

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