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

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Date:	Mon, 03 Oct 2011 18:31:48 +0200
From:	Knut Petersen <Knut_Petersen@...nline.de>
To:	linux-kernel@...r.kernel.org
CC:	Greg KH <gregkh@...e.de>
Subject: [BUG: kernel 3.0.4] Hard lockup / NULL pointer reference USB / BLOCK
 Layer

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.

cu,
  Knut

View attachment "bug1" of type "text/plain" (22984 bytes)

View attachment "config" of type "text/plain" (67448 bytes)