On a new Gentoo based system with Kernel.org Kernels 3.17.4 to 3.17.7 when I physically plug the Keyspan 4-Port Serial to USB adapter into a usb port my system freezes with a "unable to handle kernel NULL pointer deference" message.
My old system (also Gentoo based with Kernel.org 3.17.4) does not have this issue. Both systems are using the USB_SERIAL_KEYSPAN_USA49W driver module. I tried booting into single user mode, using modprobe to load USB_SERIAL_KEYSPAN_USA49W. lsmod shows the driver. When I pluged the device in I receive the system freeze. Below is what I copied off the console ... BUG: Unable to handle kernel NULL pointer deference at 000...8c IP: [<ffffffffa006fbdd>] usa49_instat_callback+0x4d/0xb0[keyspan] PGD 1037faa067 PUD 1038301067 PMD 0 Oops: 0002 [#1] SMP Modules linked in: keyspan ezusb usbserial hid_generic ... ... Hardware name: ASUS All Series/X99-A, BIOS 1004 10/16/2014 If I can provide any more information, please ask. Please CC my e-mail address with any replies, I do not subscribe to the linux kernel list: [email protected] Richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
