[ 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 '10.128.0.2' (ECDSA) to the list of known hosts. syzkaller login: [ 33.707265] audit: type=1400 audit(1596172170.294:8): avc: denied { execmem } for pid=6357 comm="syz-executor882" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.965438] IPVS: ftp: loaded support on port[0] = 21 executing program [ 35.834875] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [ 35.842981] IP: amp_read_loc_assoc_final_data+0xe6/0x190 [ 35.848421] PGD 0 P4D 0 [ 35.851165] Oops: 0002 [#1] PREEMPT SMP KASAN [ 35.855657] Modules linked in: [ 35.858917] CPU: 1 PID: 1201 Comm: kworker/u5:0 Not tainted 4.14.190-syzkaller #0 [ 35.866518] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.876127] Workqueue: hci0 hci_rx_work [ 35.880094] task: ffff8880a79d6680 task.stack: ffff8880a7a28000 [ 35.886162] RIP: 0010:amp_read_loc_assoc_final_data+0xe6/0x190 [ 35.892121] RSP: 0018:ffff8880a7a2f9f8 EFLAGS: 00010246 [ 35.897460] RAX: 0000000000000000 RBX: 1ffff11014f45f3f RCX: 1ffff11014f3adeb [ 35.904705] RDX: 1ffff11012e2e90b RSI: ffff88809726c700 RDI: ffff888097174858 [ 35.911950] RBP: ffff88809726c700 R08: 0000000000000000 R09: 0000000000000002 [ 35.919194] R10: 0000000000000000 R11: ffff8880a79d6680 R12: ffff8880971744c0 [ 35.927154] R13: 0000000000000000 R14: ffff8880971744c0 R15: ffff8880952d5800 [ 35.934410] FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 35.942635] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.948502] CR2: 0000000000000030 CR3: 0000000090981000 CR4: 00000000001406e0 [ 35.955764] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.963026] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.970274] Call Trace: [ 35.972846] ? amp_read_loc_assoc+0x140/0x140 [ 35.977332] ? hci_chan_selected_evt+0x167/0x2f0 [ 35.982066] ? lock_acquire+0x170/0x3f0 [ 35.986107] ? lock_downgrade+0x740/0x740 [ 35.990755] hci_chan_selected_evt+0x1a3/0x2f0 [ 35.995317] hci_event_packet+0x17d8/0x7c7a [ 35.999638] ? trace_hardirqs_on+0x10/0x10 [ 36.004295] ? hci_cmd_complete_evt+0x9590/0x9590 [ 36.009114] ? trace_hardirqs_on+0x10/0x10 [ 36.013325] ? trace_hardirqs_on+0x10/0x10 [ 36.017552] ? debug_object_deactivate+0x1da/0x2e0 [ 36.022460] ? trace_hardirqs_on+0x10/0x10 [ 36.026671] ? skb_dequeue+0x120/0x170 [ 36.030535] ? mark_held_locks+0xa6/0xf0 [ 36.034846] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 36.040025] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 36.045027] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 36.050108] hci_rx_work+0x3e6/0x970 [ 36.054758] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 36.060193] process_one_work+0x793/0x14a0 [ 36.064405] ? work_busy+0x320/0x320 [ 36.068097] ? worker_thread+0x158/0xff0 [ 36.072134] ? _raw_spin_unlock_irq+0x24/0x80 [ 36.076604] worker_thread+0x5cc/0xff0 [ 36.080567] ? rescuer_thread+0xc80/0xc80 [ 36.085400] kthread+0x30d/0x420 [ 36.088860] ? kthread_create_on_node+0xd0/0xd0 [ 36.093539] ret_from_fork+0x24/0x30 [ 36.097234] 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 94 8b fe [ 36.116530] RIP: amp_read_loc_assoc_final_data+0xe6/0x190 RSP: ffff8880a7a2f9f8 [ 36.124051] CR2: 0000000000000030 [ 36.127488] ---[ end trace d21a20431cbfe6a2 ]--- [ 36.132218] Kernel panic - not syncing: Fatal exception [ 36.139367] Kernel Offset: disabled [ 36.143196] Rebooting in 86400 seconds..