[ 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 '10.128.0.141' (ECDSA) to the list of known hosts. syzkaller login: [ 62.697729][ T6855] IPVS: ftp: loaded support on port[0] = 21 executing program [ 62.784685][ T6861] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 62.796420][ T6861] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 62.804845][ T6861] CPU: 1 PID: 6861 Comm: kworker/u5:2 Not tainted 5.9.0-rc2-syzkaller #0 [ 62.813291][ T6861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.823348][ T6861] Workqueue: hci0 hci_rx_work [ 62.828006][ T6861] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 62.835002][ T6861] 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 [ 62.854685][ T6861] RSP: 0018:ffffc900054d7a38 EFLAGS: 00010202 [ 62.860741][ T6861] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87246ed3 [ 62.868691][ T6861] RDX: 0000000000000002 RSI: ffffffff87246ee0 RDI: 0000000000000010 [ 62.876649][ T6861] RBP: ffff88809388c000 R08: 0000000000000001 R09: ffff88808e0d48e0 [ 62.884610][ T6861] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 62.892570][ T6861] R13: ffff88808b781138 R14: ffff88809442e00b R15: 00000000000000c9 [ 62.900704][ T6861] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 62.909619][ T6861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.916176][ T6861] CR2: 00000000200000c0 CR3: 00000000a3e9f000 CR4: 00000000001506e0 [ 62.924151][ T6861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.932113][ T6861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.940071][ T6861] Call Trace: [ 62.943360][ T6861] hci_event_packet+0x4696/0x87a8 [ 62.948362][ T6861] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 62.954323][ T6861] ? __lock_acquire+0x16cb/0x5640 [ 62.959506][ T6861] ? hci_cmd_complete_evt+0xc6d0/0xc6d0 [ 62.965034][ T6861] ? lock_acquire+0x1f1/0xad0 [ 62.969697][ T6861] ? skb_dequeue+0x1c/0x180 [ 62.974176][ T6861] ? find_held_lock+0x2d/0x110 [ 62.978944][ T6861] ? mark_lock+0xbc/0x1710 [ 62.983332][ T6861] ? mark_held_locks+0x9f/0xe0 [ 62.988085][ T6861] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.994560][ T6861] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 63.000511][ T6861] ? trace_hardirqs_on+0x5f/0x220 [ 63.005510][ T6861] ? lockdep_hardirqs_on+0x76/0xf0 [ 63.010618][ T6861] hci_rx_work+0x22e/0xb50 [ 63.015016][ T6861] process_one_work+0x94c/0x1670 [ 63.019969][ T6861] ? lock_release+0x8e0/0x8e0 [ 63.024633][ T6861] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 63.029991][ T6861] ? rwlock_bug.part.0+0x90/0x90 [ 63.034905][ T6861] worker_thread+0x64c/0x1120 [ 63.039559][ T6861] ? __kthread_parkme+0x13f/0x1e0 [ 63.044581][ T6861] ? process_one_work+0x1670/0x1670 [ 63.049756][ T6861] kthread+0x3b5/0x4a0 [ 63.053799][ T6861] ? __kthread_bind_mask+0xc0/0xc0 [ 63.058883][ T6861] ? __kthread_bind_mask+0xc0/0xc0 [ 63.064495][ T6861] ret_from_fork+0x1f/0x30 [ 63.068891][ T6861] Modules linked in: [ 63.073378][ T6861] ---[ end trace 251704f7e27cd3a9 ]--- [ 63.079108][ T6861] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 63.086229][ T6861] 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 [ 63.105927][ T6861] RSP: 0018:ffffc900054d7a38 EFLAGS: 00010202 [ 63.111998][ T6861] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87246ed3 [ 63.120597][ T6861] RDX: 0000000000000002 RSI: ffffffff87246ee0 RDI: 0000000000000010 [ 63.128662][ T6861] RBP: ffff88809388c000 R08: 0000000000000001 R09: ffff88808e0d48e0 [ 63.136710][ T6861] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 63.144769][ T6861] R13: ffff88808b781138 R14: ffff88809442e00b R15: 00000000000000c9 [ 63.152814][ T6861] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 63.161779][ T6861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.168473][ T6861] CR2: 00000000200000c0 CR3: 0000000009a8d000 CR4: 00000000001506e0 [ 63.168809][ T35] tipc: TX() has been purged, node left! [ 63.176532][ T6861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.190179][ T6861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.198227][ T6861] Kernel panic - not syncing: Fatal exception [ 63.205347][ T6861] Kernel Offset: disabled [ 63.209661][ T6861] Rebooting in 86400 seconds..