On Mon, 2016-10-17 at 17:20 +0200, Wim Osterholt wrote: > On Mon, Oct 17, 2016 at 04:10:45PM +0200, Oliver Neukum wrote: > > Hi, > > > > I got one of those devices. However, I don't get a crash. > > Could you please give me instructions on how you trigger it? > > That's not too hard, just plug it in. :-) > > However you must have set cdc_acm in your kernel, or availabe as a module. > It happens on all my machines on kernels 4.8 and 4.9. > Now, all my kernel configs will differ a bit, but must have something > peculiar in common. Or you've received a totally different device. > > Here's one config at http://webserver.djo.tudelft.nl/.config-4.8.1 > > Many options are inherited by 'make oldconfig' from version to version, > without me knowing what it all means. So maybe it's just a weird combination > of options then? Oct 18 14:05:07 linux-dtbq.site kernel: usb 1-9: new full-speed USB device number 10 using xhci_hcd Oct 18 14:05:07 linux-dtbq.site mtp-probe[2583]: checking bus 1, device 10: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9" Oct 18 14:05:07 linux-dtbq.site mtp-probe[2583]: bus: 1, device: 10 was not an MTP device Oct 18 14:05:07 linux-dtbq.site kernel: usb 1-9: New USB device found, idVendor=0572, idProduct=1340 Oct 18 14:05:07 linux-dtbq.site kernel: usb 1-9: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Oct 18 14:05:07 linux-dtbq.site kernel: usb 1-9: Product: USB Modem Oct 18 14:05:07 linux-dtbq.site kernel: usb 1-9: Manufacturer: Conexant Oct 18 14:05:07 linux-dtbq.site kernel: usb 1-9: SerialNumber: 12345678 Oct 18 14:05:07 linux-dtbq.site kernel: cdc_acm 1-9:1.0: ttyACM0: USB ACM device Oct 18 14:05:07 linux-dtbq.site kernel: usbcore: registered new interface driver cdc_acm Oct 18 14:05:07 linux-dtbq.site kernel: cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters Oct 18 14:05:11 linux-dtbq.site ModemManager[901]: <info> Creating modem with plugin 'Generic' and '1' ports Oct 18 14:05:11 linux-dtbq.site ModemManager[901]: <info> Modem for device at '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-9' successfully created Oct 18 14:05:11 linux-dtbq.site ModemManager[901]: <warn> Modem couldn't be initialized: couldn't load current capabilities: Failed to determine modem capabilities. Oct 18 14:05:11 linux-dtbq.site NetworkManager[945]: <warn> (ttyACM0): failed to look up interface index Oct 18 14:05:11 linux-dtbq.site NetworkManager[945]: <info> (ttyACM0): device state change: unmanaged -> unavailable (reason 'none') [10 20 0] Oct 18 14:05:11 linux-dtbq.site NetworkManager[945]: <info> (ttyACM0): deactivating device (reason 'none') [0] Oct 18 14:05:11 linux-dtbq.site NetworkManager[945]: <info> (ttyACM0): modem state 'unknown' Oct 18 14:05:11 linux-dtbq.site NetworkManager[945]: <info> (ttyACM0): new Broadband device (driver: 'cdc_acm' ifindex: 0) Oct 18 14:05:11 linux-dtbq.site NetworkManager[945]: <info> (ttyACM0): exported as /org/freedesktop/NetworkManager/Devices/3 It definitely does not crash and is probed and your .config is not extremely unusual. I am afraid unless you test the last patch I sent we will not make progress. Something odd is going on. Regards Oliver -- 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
