[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.208' (ECDSA) to the list of known hosts. syzkaller login: [ 40.741435][ T6811] IPVS: ftp: loaded support on port[0] = 21 [ 41.839796][ T6835] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 41.851530][ T6835] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 41.859927][ T6835] CPU: 1 PID: 6835 Comm: kworker/u5:1 Not tainted 5.8.0-rc7-syzkaller #0 [ 41.868316][ T6835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.878360][ T6835] Workqueue: hci0 hci_rx_work [ 41.883009][ T6835] RIP: 0010:hci_event_packet+0x8386/0x18260 [ 41.888866][ T6835] 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 [ 41.908434][ T6835] RSP: 0018:ffffc900015b7ac8 EFLAGS: 00010202 [ 41.914464][ T6835] RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000 [ 41.922406][ T6835] RDX: ffff8880920805c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 41.930345][ T6835] RBP: ffff888092ef2000 R08: ffffffff875506b4 R09: fffffbfff131a9a6 [ 41.938287][ T6835] R10: fffffbfff131a9a6 R11: 0000000000000000 R12: ffff8880a6e4c010 [ 41.946224][ T6835] R13: ffff8880a6e4d110 R14: dffffc0000000000 R15: ffff8880a6e4c000 [ 41.954162][ T6835] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 41.963055][ T6835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.969616][ T6835] CR2: 0000000020000000 CR3: 00000000a85d0000 CR4: 00000000001406e0 [ 41.977673][ T6835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.985612][ T6835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.993548][ T6835] Call Trace: [ 41.996809][ T6835] ? trace_lock_release+0x137/0x1a0 [ 42.001975][ T6835] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 42.007746][ T6835] ? lockdep_hardirqs_on+0x38/0xe0 [ 42.012837][ T6835] hci_rx_work+0x236/0x9c0 [ 42.017220][ T6835] process_one_work+0x789/0xfc0 [ 42.022041][ T6835] worker_thread+0xaa4/0x1460 [ 42.026688][ T6835] kthread+0x37e/0x3a0 [ 42.030725][ T6835] ? rcu_lock_release+0x20/0x20 [ 42.035556][ T6835] ? kthread_blkcg+0xd0/0xd0 executing program [ 42.040112][ T6835] ret_from_fork+0x1f/0x30 [ 42.044490][ T6835] Modules linked in: [ 42.050490][ T6835] ---[ end trace c208f496eb8e7691 ]--- [ 42.055951][ T6835] RIP: 0010:hci_event_packet+0x8386/0x18260 [ 42.061975][ T6835] 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 [ 42.081729][ T6835] RSP: 0018:ffffc900015b7ac8 EFLAGS: 00010202 [ 42.087775][ T6835] RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000 [ 42.095760][ T6835] RDX: ffff8880920805c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 42.103762][ T6835] RBP: ffff888092ef2000 R08: ffffffff875506b4 R09: fffffbfff131a9a6 [ 42.111749][ T6835] R10: fffffbfff131a9a6 R11: 0000000000000000 R12: ffff8880a6e4c010 [ 42.119758][ T6835] R13: ffff8880a6e4d110 R14: dffffc0000000000 R15: ffff8880a6e4c000 [ 42.127706][ T6835] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 42.136634][ T6835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.143253][ T6835] CR2: 00007f095f0866c0 CR3: 0000000009479000 CR4: 00000000001406e0 [ 42.151253][ T6835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.159253][ T6835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.167200][ T6835] Kernel panic - not syncing: Fatal exception [ 42.174706][ T6835] Kernel Offset: disabled [ 42.179023][ T6835] Rebooting in 86400 seconds..