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

[Greg KH]

On Mon, Oct 03, 2011 at 06:31:48PM +0200, Knut Petersen wrote:
> Hi everybody!
> 
> I connected two USB flash drives and tried to erase them using dd:
> 
> dd if=/dev/zero of=/dev/sdc bs=65536
> dd if=/dev/zero of=/dev/sdd bs=65536
> 
> I left the machine for some hours and found it completely locked
> on return. No reaction to the keybard, network access impossible.
> A hard reboot was necessary.
> 
> Attached find the relevant part of /var/log/messages and the configuration
> of the kernel used.

Can you please try 3.0.6 which is now out?  There is a USB/block layer
fix in it.

thanks,

greg k-h
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