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To: linux-kernel@vger.kernel.org
From: Niels <zorglub_olsen@hotmail.com>
Subject: Re: Problems with a docking station [now with kernel panic!]
Date: Sun, 29 May 2011 20:09:28 +0200
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On Friday 27 May 2011 14:55, Niels wrote:

> Hi people,
> 
> I'm not quite sure were this problem belongs...
> 
> I have an AGK hard disk docking station, like this:
> 
> http://www.agknordic.com/index.php?side_id=387
> 
> It works fine, as in I can transfer files. The problem is that it
> apparently disconnects disks forcefully. If i put one disk in, it gets
> mounted fine as, say, sdg1. But if I then put in another disk, the first
> one is disconnected, and they are both discovered by the system, as sdg1
> and sdh1.
> 
> This is obviously not so good for the file systems.
> 
> One time I got this:
> 
> usb 2-2.2.5: USB disconnect, address 13
> EXT3-fs error (device sdg1): ext3_find_entry: reading directory #2 offset
> 0 ------------[ cut here ]------------
> WARNING: at fs/buffer.c:1159 mark_buffer_dirty+0x23/0x7d()
> Hardware name: P5Q SE
> Modules linked in: coretemp snd_seq_midi snd_seq_midi_event snd_seq
> vboxnetadp vboxnetflt vboxdrv snd_ice1712 snd_ice17xx_ak4xxx
> snd_ak4xxx_adda snd_cs8427 snd_ac97_codec snd_pcm nvidia(P) snd_timer
> snd_page_alloc ac97_bus snd_i2c snd_mpu401_uart snd_rawmidi pcspkr
> snd_seq_device snd
> Pid: 12456, comm: umount Tainted: P           2.6.34-gentoo-r11 #1
> Call Trace:
>  [<ffffffff8102e246>] ? warn_slowpath_common+0x76/0x8c
>  [<ffffffff810b9ce1>] ? mark_buffer_dirty+0x23/0x7d
>  [<ffffffff810f0176>] ? ext3_put_super+0x95/0x256
>  [<ffffffff8109de8b>] ? generic_shutdown_super+0x4f/0xea
>  [<ffffffff8109df46>] ? kill_block_super+0x20/0x35
>  [<ffffffff8109e377>] ? deactivate_super+0x43/0x5c
>  [<ffffffff810b032d>] ? sys_umount+0x2b7/0x2e2
>  [<ffffffff81001e6b>] ? system_call_fastpath+0x16/0x1b
> ---[ end trace 701147f5a82f1cb9 ]---
> 
> 
> Yes, I know it's an old kernel. I've been having printer problems with 35
> and 36. Could the above problem possibly be solved in a newer release, or
> is this simply poor hardware design?
> 
> 


I tried this again, now with 2.6.38-gentoo-r6. When I plugged in the second
disk, the machine crashed immediately with capslock and scrolllock
blinking.

There was nothing in /var/log/messages after reboot.


//Niels

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