On Sat, 2014-01-11 at 08:56 +1300, Thomas Kear wrote: > 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. [...] > So far as I can tell, the driver is unaffected as late as 3.11.6, but > problematic as of 3.12 (and still affected in 3.13-rc5). The history > of drivers/net/usb/ax88179_178a.c for this time period yields this > patch, which at least in my somewhat limited understanding appeared a > likely candidate. I've reverted this on my system - against several > linux-next builds from the last 3-4 weeks - and have had no issues > with this network controller since. > > commit 3804fad45411b48233b48003e33a78f290d227c8 > Author: Ming Lei <ming.lei@xxxxxxxxxxxxx> > Date: Thu Aug 8 21:48:25 2013 +0800 > > USBNET: ax88179_178a: enable tso if usb host supports sg dma Enabling SG DMA here has unfortunately caused a number of regressions as the XHCI (USB 3 controller) hardware is a bit inflexible and the driver wasn't quite ready to handle the SG lists generated for net devices. I don't think I've seen this particular symptom though, and it might indicate a bug in usbnet. [...] > [2] http://i.imgur.com/NCanPUY.jpg For those joining us on linux-usb, this is a photo of the panic. Ben. -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
