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Subjectusbnet/rndis (was: Is this bug too obvious?)
On Tue, 13 Feb 2007 20:13:06 -0500, Chuck Ebbert <cebbert@redhat.com> wrote:

> OK I'll keep looking for the cause of the oops then:
>
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=228231

> Feb 12 01:11:29 MyComputer kernel: ohci_hcd 0000:00:02.1: auto-wakeup
> Feb 12 01:11:30 MyComputer kernel: usb 2-3: new full speed USB device using ohci_hcd and address 2
> Feb 12 01:11:30 MyComputer kernel: usb 2-3: configuration #1 chosen from 1 choice
> Feb 12 01:11:30 MyComputer kernel: drivers/usb/class/cdc-acm.c: Ignoring extra header, type -3, length 4
> Feb 12 01:11:30 MyComputer kernel: cdc_acm 2-3:1.1: ttyACM0: USB ACM device
> Feb 12 01:11:30 MyComputer kernel: usbcore: registered new interface driver cdc_acm
> Feb 12 01:11:30 MyComputer kernel: drivers/usb/class/cdc-acm.c: v0.25:USB Abstract Control Model driver for USB modems and ISDN adapters
> Feb 12 01:11:31 MyComputer kernel: usbcore: registered new interface driver cdc_ether
> Feb 12 01:11:31 MyComputer kernel: rndis_host 2-3:1.9: RNDIS init failed, -110
> Feb 12 01:11:31 MyComputer kernel: usb%d: unregister 'rndis_host' usb-0000:00:02.1-3, RNDIS device
> Feb 12 01:11:31 MyComputer kernel: BUGging on (!PageSlab(page))
> Feb 12 01:11:31 MyComputer kernel: ------------[ cut here ]------------
> Feb 12 01:11:31 MyComputer kernel: kernel BUG at mm/slab.c:594!

This looks like a kfree with a bogus address, possibly poisoned.

If you don't do it sooner, I'll look at the error paths in rndis
and/or usbnet.

BTW, for USB code, it's best to send to linux-usb-devel@lists.sourceforge.net.

-- Pete
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