Re: [usb-storage] 2.6.22-rc4-mm2 - usb-storage

From: Alan Stern
Date: Fri Jun 08 2007 - 10:17:01 EST


[Trimmed the recipients list]

On Fri, 8 Jun 2007, Peter Zijlstra wrote:

> On Thu, 2007-06-07 at 18:20 -0400, Alan Stern wrote:
> > On Thu, 7 Jun 2007, Peter Zijlstra wrote:
> >
> > > My kernel went chatty when I tried to access my usb-stick; which it
> > > didn't seem to find.
...
> > This is false-alarm output from something intended to track down a
> > reported bug. The patch responsible is this one:
>
> Right, well then I have another problem. Because it doesn't find my
> usb-stick.
>
> I noticed from D states (quite easy to reproduce, just modprobe
> usb-storage):
>
> scsi_eh_6 D ffff8100079ed640 0 3568 2 (L-TLB)
> ffff81000ac45e10 0000000000000046 0000000000000000 0000000180252936
> 0000000000000002 0000000100000000 ffff81000ac42700 ffff8100043ca240
> ffff81000ac42978 ffffffff8024fc8d 00000000000000ff ffff81000ac42700
> Call Trace:
> [<ffffffff804775a9>] wait_for_completion+0x82/0xc1
> [<ffffffff88201673>] :usb_storage:command_abort+0x7c/0x86
> [<ffffffff8805f54f>] :scsi_mod:scsi_error_handler+0x28e/0x4cc
> [<ffffffff8024a7ff>] kthread+0x47/0x74
> [<ffffffff8020cc28>] child_rip+0xa/0x12

Okay, this is a separate problem. To help diagnose it, please turn on
CONFIG_USB_DEBUG and CONFIG_USB_STORAGE_DEBUG and then post the
resulting dmesg log.

Alan Stern

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