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From: Greg KH <gregkh@suse.de>
To: Knut Petersen <Knut_Petersen@t-online.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [BUG: kernel 3.0.4] Hard lockup / NULL pointer reference USB / BLOCK Layer
Date: Tue, 4 Oct 2011 09:52:03 -0700	[thread overview]
Message-ID: <20111004165203.GD786@suse.de> (raw)
In-Reply-To: <4E8AE0BC.70203@t-online.de>

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

      reply	other threads:[~2011-10-04 17:27 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-03 16:31 [BUG: kernel 3.0.4] Hard lockup / NULL pointer reference USB / BLOCK Layer Knut Petersen
2011-10-03 23:32 ` Greg KH
2011-10-04 10:32   ` Knut Petersen
2011-10-04 16:52     ` Greg KH [this message]

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