Bluetooth: received HCILL_WAKE_UP_ACK in state 2 Bluetooth: Unknown HCI packet type 5e kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access Bluetooth: Unknown HCI packet type 43 general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Bluetooth: Unknown HCI packet type 5e Workqueue: events_unbound flush_to_ldisc task: ffff8880a9c7c140 task.stack: ffff8880a9cc8000 RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2017 [inline] RIP: 0010:skb_put+0x29/0x170 net/core/skbuff.c:1694 Bluetooth: Unknown HCI packet type 50 RSP: 0018:ffff8880a9ccfb98 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88808451d140 RCX: ffff8880922cf280 RDX: 000000000000001a RSI: 0000000000000002 RDI: 00000000000000d0 RBP: 0000000000000000 R08: 0000000000002929 R09: ffffffff89e6a2c8 R10: ffff8880a9c7ca68 R11: ffff8880a9c7c140 R12: 0000000000000002 R13: ffff88808451d150 R14: 0000000000000006 R15: ffff888050df6920 FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Bluetooth: Unknown HCI packet type 5e CR2: 00007f2fbf12df38 CR3: 00000000a8d30000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_put_data include/linux/skbuff.h:2097 [inline] ll_recv+0x4f5/0x1040 drivers/bluetooth/hci_ll.c:416 hci_uart_tty_receive+0x1ec/0x4c0 drivers/bluetooth/hci_ldisc.c:616 Bluetooth: Unknown HCI packet type 40 tty_ldisc_receive_buf+0x12e/0x170 drivers/tty/tty_buffer.c:459 tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37 receive_buf drivers/tty/tty_buffer.c:475 [inline] flush_to_ldisc+0x1dd/0x3f0 drivers/tty/tty_buffer.c:527 process_one_work+0x7c0/0x14c0 kernel/workqueue.c:2116 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 00 00 41 55 41 54 41 89 f4 55 48 89 fd 53 e8 2f 2f 61 fc 48 8d bd d0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 24 01 00 00 48 8d bd c8 00 00 00 4c 8b ad d0 RIP: skb_tail_pointer include/linux/skbuff.h:2017 [inline] RSP: ffff8880a9ccfb98 RIP: skb_put+0x29/0x170 net/core/skbuff.c:1694 RSP: ffff8880a9ccfb98 ---[ end trace f2e2a6b9c1bd6226 ]---