linux-kernel - Re: USB OOPS 2.6.25-rc2-git1

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Message-ID: <Pine.LNX.4.44L0.0802191429570.13562-100000@iolanthe.rowland.org>
Date:	Tue, 19 Feb 2008 14:31:20 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Andre Tomt <andre@...t.net>
cc:	linux-kernel@...r.kernel.org, <linux-usb@...r.kernel.org>
Subject: Re: USB OOPS 2.6.25-rc2-git1

On Tue, 19 Feb 2008, Andre Tomt wrote:

> Got this on a serial console today, using 2.6.25-rc2-git1. Machine was 
> not doing anything interesting at the time, but has its / and kernel on 
> a usb-storage device (usb pen drive).
> 
> Intel ICH8R chipset (and USB controller), running x86_64 kernel. I'll 
> post .config and some additional info when I get home later if it isn't 
> obvious what broke.
> 
> > BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
> > IP: [<ffffffff88063d11>] :ehci_hcd:end_unlink_async+0x17/0xfa

Can you provide some sort of disassembly listing of end_unlink_async, 
to determine which C statement contained the NULL pointer dereference?

Alan Stern

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