I've tested the following two kernels from sid on a stretch system and they both DO NOT exhibit this bug:
linux-image-4.15.0-1-amd64 linux-image-4.15.0-2-amd64 Instead of the kernel null pointer exception, I see the following in the boot log: kernel: usb 1-7: New USB device found, idVendor=8087, idProduct=0a2b kernel: usb 1-7: New USB device strings: Mfr=0, Product=0, SerialNumber=0 kernel: alg: ecdh: test failed on vector 3, err=-14 kernel: Bluetooth: Core ver 2.22 My bluetooth devices now work while they didn't with the 4.14.0 kernels. -- JP