[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.799016] IPVS: ftp: loaded support on port[0] = 21 [ 30.835574] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [ 30.843765] IP: amp_read_loc_assoc_final_data+0xe6/0x190 [ 30.849189] PGD 0 P4D 0 [ 30.851839] Oops: 0002 [#1] PREEMPT SMP KASAN [ 30.856332] Modules linked in: [ 30.859507] CPU: 0 PID: 7990 Comm: kworker/u5:1 Not tainted 4.14.209-syzkaller #0 [ 30.867099] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.876451] Workqueue: hci0 hci_rx_work [ 30.880408] task: ffff8880b2a623c0 task.stack: ffff888095550000 [ 30.886443] RIP: 0010:amp_read_loc_assoc_final_data+0xe6/0x190 [ 30.892385] RSP: 0018:ffff888095557a08 EFLAGS: 00010246 [ 30.897737] RAX: 0000000000000000 RBX: 1ffff11012aaaf41 RCX: 1ffff1101654c593 [ 30.904978] RDX: 1ffff11012af2973 RSI: ffff8880b2a36a80 RDI: ffff888095794b98 [ 30.912221] RBP: ffff8880b2a36a80 R08: 0000000000000000 R09: 0000000000000002 [ 30.919463] R10: 0000000000000000 R11: ffff8880b2a623c0 R12: ffff888095794800 [ 30.926719] R13: 0000000000000000 R14: ffff888095794800 R15: ffff8880b510a500 [ 30.933962] FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 30.942163] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.948018] CR2: 0000000000000030 CR3: 000000009bcf1000 CR4: 00000000001406f0 [ 30.955274] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.962516] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.969767] Call Trace: [ 30.972332] ? amp_read_loc_assoc+0x140/0x140 [ 30.976802] ? hci_chan_selected_evt+0x176/0x360 [ 30.983014] ? lock_acquire+0x170/0x3f0 [ 30.986964] ? lock_downgrade+0x740/0x740 [ 30.991101] hci_chan_selected_evt+0x1b2/0x360 [ 30.995678] hci_event_packet+0x2260/0x750f [ 30.999970] ? trace_hardirqs_on+0x10/0x10 [ 31.004189] ? hci_cmd_complete_evt+0xb490/0xb490 [ 31.009011] ? trace_hardirqs_on+0x10/0x10 [ 31.013219] ? debug_object_deactivate+0x1da/0x2e0 [ 31.018121] ? skb_dequeue+0x125/0x180 [ 31.021980] ? mark_held_locks+0xa6/0xf0 [ 31.026026] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 31.031102] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 31.036091] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 31.041166] hci_rx_work+0x427/0xb40 [ 31.044853] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 31.050278] process_one_work+0x793/0x14a0 [ 31.054504] ? work_busy+0x320/0x320 [ 31.058191] ? worker_thread+0x158/0xff0 [ 31.062244] ? _raw_spin_unlock_irq+0x24/0x80 [ 31.066725] worker_thread+0x5cc/0xff0 [ 31.070588] ? rescuer_thread+0xc80/0xc80 [ 31.074805] kthread+0x30d/0x420 [ 31.078155] ? kthread_create_on_node+0xd0/0xd0 [ 31.082795] ret_from_fork+0x24/0x30 [ 31.086479] Code: 44 24 21 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 74 08 3c 01 0f 8e 90 00 00 00 41 0f b7 84 24 98 03 00 00 66 89 44 24 23 41 80 4d 30 04 48 8d 6c 24 40 4c 89 e6 48 89 ef e8 c4 6b fe [ 31.105555] RIP: amp_read_loc_assoc_final_data+0xe6/0x190 RSP: ffff888095557a08 [ 31.112970] CR2: 0000000000000030 [ 31.116419] ---[ end trace eb629968066ecdf7 ]--- [ 31.121148] Kernel panic - not syncing: Fatal exception [ 31.127272] Kernel Offset: disabled [ 31.130875] Rebooting in 86400 seconds..