$ uname -r 4.16.0-rc7 [85044.650045] Bluetooth: hci0: last event is not cmd complete (0x0f) [85057.544598] usb 1-9.2: USB disconnect, device number 12 [85060.640035] Bluetooth: hci0: last event is not cmd complete (0x0f) [85065.025725] BUG: sleeping function called from invalid context at net/core/sock.c:2768 [85065.025729] in_atomic(): 1, irqs_disabled(): 0, pid: 2084, name: krfcommd [85065.025730] INFO: lockdep is turned off. [85065.025733] CPU: 6 PID: 2084 Comm: krfcommd Not tainted 4.16.0-rc7 #1 [85065.025735] Hardware name: Gigabyte Technology Co., Ltd. Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014 [85065.025736] Call Trace: [85065.025743] dump_stack+0x85/0xbf [85065.025747] ___might_sleep+0x15b/0x240 [85065.025751] lock_sock_nested+0x29/0xa0 [85065.025764] bt_accept_enqueue+0x3c/0xb0 [bluetooth] [85065.025770] rfcomm_connect_ind+0x227/0x250 [rfcomm] [85065.025774] rfcomm_run+0x155a/0x1860 [rfcomm] [85065.025778] ? do_wait_intr_irq+0xb0/0xb0 [85065.025783] ? rfcomm_check_accept+0xa0/0xa0 [rfcomm] [85065.025786] kthread+0x121/0x140 [85065.025789] ? kthread_create_worker_on_cpu+0x70/0x70 [85065.025792] ret_from_fork+0x3a/0x50 [85069.642058] Bluetooth: hci0: last event is not cmd complete (0x0f) -- Best Regards, Mike Gavrilov.