netdev - RE: PROBLEM: usbnet / ax88179_178a: Panic in usb_hcd_map_urb_for

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Message-ID: <063D6719AE5E284EB5DD2968C1650D6D45EB48@AcuExch.aculab.com>
Date:	Fri, 17 Jan 2014 10:38:12 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'Thomas Kear' <thomas@...r.co.nz>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: PROBLEM: usbnet / ax88179_178a: Panic in usb_hcd_map_urb_for_dma

From: Thomas Kear
> USB3 gigabit ethernet adapters with the ASIX AX88179 chipset (LevelOne
> USB0401-V3, Plugable USB3-E1000, SIIG JU-NE0211-S1 and others) are
> experiencing kernel panics in usb_hcd_map_urb_for_dma since 3.12...

I've worked out why I didn't hit that in my ax8179_18a testing.
I was running with a patch to xhci-ring.c that sends the zero length
packet, so the usbnet code wasn't adding the extra zero byte.

That patch is somewhere in Sarah's 'pending' queue.

	David