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Date: Tue, 5 Apr 2011 16:54:46 +0200 (CEST)
Subject: Re: [Libusb-devel] Kernel bug message and missing data 
     on	libusb_interrupt_transfer
From: "Segher Boessenkool" <segher@kernel.crashing.org>
To: "Oncaphillis" <oncaphillis@snafu.de>
Cc: "Xiaofan Chen" <xiaofanc@gmail.com>, libusb-devel@lists.sourceforge.net,
        "Kernel development list" <linux-kernel@vger.kernel.org>
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>> I'm in an environment where we are
>> reluctant to switch between versions. I had a hard time to

> Pid: 14293, comm: E25Stress Tainted: G      D    2.6.30.10 #2 To Be
> Filled By O.E.M.
> RIP: 0010:[<ffffffff8028d2f8>]  [<ffffffff8028d2f8>] kfree+0x7c/0xdb

> Suprisingly now the kernel is reported as tainted although there isn't
> any module inserted the

That is not true; "G" means you have loaded a (GPL-compatible) module.
"D" means the kernel died.  It died because it tried to dealloc memory
using a bad pointer, perhaps a null pointer.

Your kernel is two years old, you should try a current kernel.


Segher

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