Hi Soeren, > indeed it fixes this oops ... however I still get please try the attached patch. It should fix it, too. > usb 2-1: USB disconnect, address 4 > usb 2-1: new full speed USB device using address 5 > devfs_mk_dev: could not append to parent for bluetooth/rfcomm/0 > devfs_remove: bluetooth/rfcomm/0 not found, cannot remove > Call trace: > [c00099c4] dump_stack+0x18/0x28 > [c010af1c] devfs_remove+0xcc/0xd0 > [c01e4a5c] tty_unregister_device+0x30/0x5c > [f2080b64] rfcomm_dev_destruct+0x50/0xd4 [rfcomm] > [f2081310] rfcomm_release_dev+0xf8/0x148 [rfcomm] > [f20807a8] rfcomm_sock_ioctl+0x34/0x58 [rfcomm] > [c02a8668] sock_ioctl+0xc0/0x2c0 > [c00726e0] sys_ioctl+0x100/0x318 > [c0005d60] ret_from_syscall+0x0/0x44 > usb 2-1: USB disconnect, address 5 Do you use DevFS? Does the same problem exists if you disable it and use udev instead? Regards Marcel