When DEBUG is enabled driver->driver.name is accessed, but driver can be NULL [ 174.411689] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 [ 174.429043] RIP: 0010:[<ffffffffa0131ca3>] [<ffffffffa0131ca3>] net2280_stop+0xa3/0x100 [net2280] [ 174.457910] Call Trace: [ 174.459503] [<ffffffffa00dd92a>] usb_gadget_remove_driver+0x5a/0xb0 [udc_core] [ 174.462693] [<ffffffffa00ddd84>] usb_del_gadget_udc+0xb4/0x110 [udc_core] [ 174.464316] [<ffffffffa012e2bf>] net2280_remove+0x2f/0x1c0 [net2280] Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx> --- v4: Replace if with terniary operator drivers/usb/gadget/net2280.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index 43e5e2f..300b3a7 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -1972,7 +1972,9 @@ static int net2280_stop(struct usb_gadget *_gadget, device_remove_file (&dev->pdev->dev, &dev_attr_function); device_remove_file (&dev->pdev->dev, &dev_attr_queues); - DEBUG (dev, "unregistered driver '%s'\n", driver->driver.name); + DEBUG(dev, "unregistered driver '%s'\n", + driver ? driver->driver.name : ""); + return 0; } -- 2.0.0.rc0 -- 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
