linux-kernel - Re: PCI/e1000 BUG: unable to handle kernel paging request at 0ffff163

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Date:	Thu, 6 Sep 2012 10:24:43 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	Jiang Liu <jiang.liu@...wei.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org
Subject: Re: PCI/e1000 BUG: unable to handle kernel paging request at 0ffff163

On Thu, Sep 6, 2012 at 2:05 AM, Fengguang Wu <fengguang.wu@...el.com> wrote:
>
> The root cause is memory corruption by the isdnloop driver:
>
> ==>     [    9.345694] isdnloop-ISDN-driver Rev 1.11.6.7
> ==>     [    9.347484] isdnloop: (loop0) virtual card added
>         [    9.348444] bus: 'usb': driver_probe_device: matched device 1-1:2.0 with driver cdc_acm
>         [    9.349773] bus: 'usb': really_probe: probing driver cdc_acm with device 1-1:2.0
>         [    9.350967] cdc_acm 1-1:2.0: This device cannot do calls on its own. It is not a modem.
>         [    9.353255] cdc_acm 1-1:2.0: ttyACM0: USB ACM device
>         [    9.354137] BUG: unable to handle kernel paging request at 0ffff163
>         [    9.355214] IP: [<0ffff163>] 0xffff162
>         [    9.355869] *pde = 00000000

good.
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