[  OK  ] Found device /dev/ttyS0.
[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Started Getty on tty6.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Started getty on tty2-tty6 if dbus and logind are not available.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.127' (ECDSA) to the list of known hosts.
syzkaller login: [   42.891596][ T6813] IPVS: ftp: loaded support on port[0] = 21
executing program
[   43.996800][ T6840] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
[   44.008576][ T6840] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
[   44.017052][ T6840] CPU: 1 PID: 6840 Comm: kworker/u5:2 Not tainted 5.8.0-rc7-syzkaller #0
[   44.025641][ T6840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   44.035799][ T6840] Workqueue: hci0 hci_rx_work
[   44.040586][ T6840] RIP: 0010:hci_event_packet+0x8386/0x18260
[   44.046590][ T6840] Code: c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 80 3c 30 00 74 08 48 89 df e8 58 9a 5e fa 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 3b 9a 5e fa 48 8b 1b 48 89 d8 48
[   44.066379][ T6840] RSP: 0018:ffffc90001617ac8 EFLAGS: 00010202
[   44.072690][ T6840] RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000
[   44.080643][ T6840] RDX: ffff888091f26440 RSI: 0000000000000000 RDI: 0000000000000000
[   44.088702][ T6840] RBP: ffff888091e0e000 R08: ffffffff875506b4 R09: fffffbfff131a9a6
[   44.096719][ T6840] R10: fffffbfff131a9a6 R11: 0000000000000000 R12: ffff888091a70010
[   44.104779][ T6840] R13: ffff888091a71110 R14: dffffc0000000000 R15: ffff888091a70000
[   44.112820][ T6840] FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
[   44.121724][ T6840] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.128298][ T6840] CR2: 0000000020000180 CR3: 000000009701f000 CR4: 00000000001406e0
[   44.136437][ T6840] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   44.144415][ T6840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   44.152382][ T6840] Call Trace:
[   44.155702][ T6840]  ? trace_lock_release+0x137/0x1a0
[   44.160877][ T6840]  ? _raw_spin_unlock_irqrestore+0x6f/0xd0
[   44.166670][ T6840]  ? lockdep_hardirqs_on+0x38/0xe0
[   44.171764][ T6840]  hci_rx_work+0x236/0x9c0
[   44.176181][ T6840]  process_one_work+0x789/0xfc0
[   44.185184][ T6840]  worker_thread+0xaa4/0x1460
[   44.189861][ T6840]  ? _raw_spin_unlock_irqrestore+0x6f/0xd0
[   44.195754][ T6840]  kthread+0x37e/0x3a0
[   44.199801][ T6840]  ? rcu_lock_release+0x20/0x20
[   44.204664][ T6840]  ? kthread_blkcg+0xd0/0xd0
[   44.209248][ T6840]  ret_from_fork+0x1f/0x30
[   44.213637][ T6840] Modules linked in:
[   44.220280][ T6840] ---[ end trace 516baff3c407df5b ]---
[   44.225791][ T6840] RIP: 0010:hci_event_packet+0x8386/0x18260
[   44.231796][ T6840] Code: c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 80 3c 30 00 74 08 48 89 df e8 58 9a 5e fa 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 3b 9a 5e fa 48 8b 1b 48 89 d8 48
[   44.252429][ T6840] RSP: 0018:ffffc90001617ac8 EFLAGS: 00010202
[   44.259284][ T6840] RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000
[   44.267500][ T6840] RDX: ffff888091f26440 RSI: 0000000000000000 RDI: 0000000000000000
[   44.275695][ T6840] RBP: ffff888091e0e000 R08: ffffffff875506b4 R09: fffffbfff131a9a6
[   44.283843][ T6840] R10: fffffbfff131a9a6 R11: 0000000000000000 R12: ffff888091a70010
[   44.291911][ T6840] R13: ffff888091a71110 R14: dffffc0000000000 R15: ffff888091a70000
[   44.299975][ T6840] FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
[   44.309071][ T6840] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.315820][ T6840] CR2: 0000000020000180 CR3: 0000000009479000 CR4: 00000000001406e0
[   44.324520][ T6840] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   44.332925][ T6840] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   44.340999][ T6840] Kernel panic - not syncing: Fatal exception
[   44.348989][ T6840] Kernel Offset: disabled
[   44.353315][ T6840] Rebooting in 86400 seconds..