Bluetooth: hci4 SCO packet for unknown connection handle 65 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 7710 Comm: kworker/u5:2 Not tainted 4.14.191-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci4 hci_rx_work task: ffff8880a8e0e400 task.stack: ffff88805fb30000 RIP: 0010:hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 net/bluetooth/hci_event.c:4360 RSP: 0018:ffff88805fb37ad0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110151c1da0 RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000010 RBP: ffff8880a52e0480 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000000000 R11: ffff8880a8e0e400 R12: ffff88805e3698a8 R13: 00000000000000c8 R14: ffff88808d80534b R15: ffff88805e368950 FS: 0000000000000000(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000746ad4 CR3: 000000006702a000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hci_event_packet+0x2592/0x7c7a net/bluetooth/hci_event.c:5429 hci_rx_work+0x3e6/0x970 net/bluetooth/hci_core.c:4244 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 dd 04 00 00 48 8b 9d 40 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a0 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 RIP: hci_phy_link_complete_evt.isra.0+0x1f3/0x6c0 net/bluetooth/hci_event.c:4360 RSP: ffff88805fb37ad0 ---[ end trace 7031d14fa30c55f7 ]---