[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. syzkaller login: [ 61.054332][ T6873] IPVS: ftp: loaded support on port[0] = 21 executing program [ 61.146185][ T1547] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 61.157923][ T1547] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 61.166328][ T1547] CPU: 1 PID: 1547 Comm: kworker/u5:0 Not tainted 5.9.0-rc2-syzkaller #0 [ 61.174722][ T1547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.184761][ T1547] Workqueue: hci0 hci_rx_work [ 61.189425][ T1547] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 61.196470][ T1547] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3e 05 00 00 48 8b 9d 30 09 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 da 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b [ 61.216051][ T1547] RSP: 0018:ffffc90005a07a38 EFLAGS: 00010202 [ 61.222090][ T1547] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87246ed3 [ 61.230036][ T1547] RDX: 0000000000000002 RSI: ffffffff87246ee0 RDI: 0000000000000010 [ 61.237988][ T1547] RBP: ffff888093da0000 R08: 0000000000000001 R09: ffff8880a4784be0 [ 61.245954][ T1547] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 61.253898][ T1547] R13: ffff888094509138 R14: ffff8880977c680b R15: 00000000000000c9 [ 61.261846][ T1547] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 61.270745][ T1547] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.277299][ T1547] CR2: 00007f310a2896c0 CR3: 00000000a8c51000 CR4: 00000000001506e0 [ 61.285283][ T1547] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.293228][ T1547] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.301207][ T1547] Call Trace: [ 61.304578][ T1547] hci_event_packet+0x4696/0x87a8 [ 61.309580][ T1547] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 61.315533][ T1547] ? __lock_acquire+0x16cb/0x5640 [ 61.320533][ T1547] ? hci_cmd_complete_evt+0xc6d0/0xc6d0 [ 61.326056][ T1547] ? lock_acquire+0x1f1/0xad0 [ 61.330711][ T1547] ? skb_dequeue+0x1c/0x180 [ 61.335186][ T1547] ? find_held_lock+0x2d/0x110 [ 61.339925][ T1547] ? mark_lock+0xbc/0x1710 [ 61.344315][ T1547] ? mark_held_locks+0x9f/0xe0 [ 61.349055][ T1547] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.354835][ T1547] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 61.360786][ T1547] ? trace_hardirqs_on+0x5f/0x220 [ 61.365787][ T1547] ? lockdep_hardirqs_on+0x76/0xf0 [ 61.370874][ T1547] hci_rx_work+0x22e/0xb50 [ 61.375268][ T1547] process_one_work+0x94c/0x1670 [ 61.380181][ T1547] ? lock_release+0x8e0/0x8e0 [ 61.384829][ T1547] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 61.390174][ T1547] ? rwlock_bug.part.0+0x90/0x90 [ 61.395085][ T1547] worker_thread+0x64c/0x1120 [ 61.399738][ T1547] ? process_one_work+0x1670/0x1670 [ 61.404959][ T1547] kthread+0x3b5/0x4a0 [ 61.409044][ T1547] ? __kthread_bind_mask+0xc0/0xc0 [ 61.414126][ T1547] ? __kthread_bind_mask+0xc0/0xc0 [ 61.419210][ T1547] ret_from_fork+0x1f/0x30 [ 61.423596][ T1547] Modules linked in: [ 61.430404][ T1547] ---[ end trace 4602e161cfd2dabe ]--- [ 61.435991][ T1547] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 61.443306][ T1547] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3e 05 00 00 48 8b 9d 30 09 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 da 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b [ 61.462993][ T1547] RSP: 0018:ffffc90005a07a38 EFLAGS: 00010202 [ 61.469109][ T1547] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87246ed3 [ 61.477087][ T1547] RDX: 0000000000000002 RSI: ffffffff87246ee0 RDI: 0000000000000010 [ 61.477144][ T109] tipc: TX() has been purged, node left! [ 61.485098][ T1547] RBP: ffff888093da0000 R08: 0000000000000001 R09: ffff8880a4784be0 [ 61.485106][ T1547] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 61.485115][ T1547] R13: ffff888094509138 R14: ffff8880977c680b R15: 00000000000000c9 [ 61.485126][ T1547] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 61.485135][ T1547] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.485143][ T1547] CR2: 00007f310a2896c0 CR3: 000000009a896000 CR4: 00000000001506e0 [ 61.485153][ T1547] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.485161][ T1547] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.485168][ T1547] Kernel panic - not syncing: Fatal exception [ 61.491991][ T1547] Kernel Offset: disabled [ 61.565531][ T1547] Rebooting in 86400 seconds..