From: kernel-stuff@comcast.net (Parag Warudkar)
To: Nish Aravamudan <nish.aravamudan@gmail.com>,
       Olaf Titz <olaf@bigred.inka.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: uninterruptible sleep lockups
Date: Wed, 23 Feb 2005 16:55:04 +0000
Message-Id: <022320051655.28959.421CB567000BC5DF0000711F220700164100009A9B9CD3040A029D0A05@comcast.net>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1797
Lines: 39

I have recently run into similar issue involving processes stuck in D state - involves khubd and usb-storage. This happens with 2.6.11-rc4.

Check lkml for subject Re: [linux-usb-devel] 2.6: USB Storage hangs mac.. 

Parag


> On Tue, 22 Feb 2005 22:31:03 +0100, Olaf Titz <olaf@bigred.inka.de> wrote:
> > In article <421A3414.2020508@nodivisions.com> you write:
> > > The most recent one was yesterday: I had run lsusb in the morning and had no
> > > problems, but at the end of the day I ran it again, and after outputting 3
> > > lines of data, it hung, stuck in D-state.  So now I have this:
> > >
> > > [/home/user]$ ps aux|grep D
> > > USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
> > > root        92  0.0  0.0     0    0 ?        D    Feb19   0:00 [khubd]
> > > root       845  0.0  0.0     0    0 ?        D    Feb19   0:00 [knodemgrd_0]
> > > root     29016  0.0  0.1  1512  592 ?        D    00:28   0:00 lsusb
> > 
> > I'm getting fairly repeatable deadlocks of this kind involving khubd
> > with a USB storage device. Perhaps there's just a faulty locking issue
> > in khubd.
> 
> Would you be willing to file a bugzilla (bugzilla.kernel.org) bug, if
> it's still happening with 2.6.11-rc4? Or, if you have filed one,
> please refer to it?
> 
> Thanks,
> Nish
> -
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