linux-kernel - Re: [BUG: kernel 3.0.4] Hard lockup / NULL pointer reference USB / BLOCK Layer

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Message-ID: <20111004165203.GD786@suse.de>
Date:	Tue, 4 Oct 2011 09:52:03 -0700
From:	Greg KH <gregkh@...e.de>
To:	Knut Petersen <Knut_Petersen@...nline.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [BUG: kernel 3.0.4] Hard lockup / NULL pointer reference USB /
 BLOCK Layer

On Tue, Oct 04, 2011 at 12:32:28PM +0200, Knut Petersen wrote:
> Both 3.0.4 and 3.0.6 were two times able to write to the flash drive that still identifies
> itself as a flash drive without problems with dd if=/dev/zero of=/dev/sda bs=65536.
> 
> Conclusion: Either there is/was a problem with massive parallel writes to at least two
> usb (flash) drives, or there is a problem with one of the flash drives itself.

I would place the blame here on the hardware, most usb flash drives can
not handle high rates of data, especially in parallel :(

> Any idea how to make a flash drive from that "memory bar"?

I have no idea, sorry.

greg k-h
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