[ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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... 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 '10.128.0.190' (ECDSA) to the list of known hosts. syzkaller login: [ 69.235372][ T27] audit: type=1400 audit(1596390931.679:8): avc: denied { execmem } for pid=6834 comm="syz-executor515" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 69.250957][ T6835] IPVS: ftp: loaded support on port[0] = 21 [ 70.380569][ T6856] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 70.392324][ T6856] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 70.400738][ T6856] CPU: 1 PID: 6856 Comm: kworker/u5:1 Not tainted 5.8.0-rc7-syzkaller #0 [ 70.409144][ T6856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.419219][ T6856] Workqueue: hci0 hci_rx_work [ 70.423903][ T6856] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 70.430913][ T6856] 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 [ 70.450493][ T6856] RSP: 0018:ffffc900018f7a38 EFLAGS: 00010202 [ 70.456535][ T6856] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871af0e3 [ 70.464484][ T6856] RDX: 0000000000000002 RSI: ffffffff871af0f0 RDI: 0000000000000010 [ 70.474259][ T6856] RBP: ffff8880a18f4000 R08: 0000000000000001 R09: ffff88808723aac8 [ 70.482205][ T6856] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 70.490239][ T6856] R13: ffff8880a2545110 R14: ffff8880a260b80b R15: 00000000000000c8 [ 70.498190][ T6856] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 70.507091][ T6856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.513655][ T6856] CR2: 0000000020000180 CR3: 00000000a76b0000 CR4: 00000000001406e0 [ 70.521605][ T6856] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.529572][ T6856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.537536][ T6856] Call Trace: [ 70.540814][ T6856] hci_event_packet+0x481a/0x86f5 [ 70.545823][ T6856] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 70.551806][ T6856] ? __lock_acquire+0x16e3/0x56e0 [ 70.556809][ T6856] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 70.562331][ T6856] ? lock_acquire+0x1f1/0xad0 [ 70.566996][ T6856] ? skb_dequeue+0x1c/0x180 [ 70.571504][ T6856] ? find_held_lock+0x2d/0x110 [ 70.576249][ T6856] ? mark_lock+0xbc/0x1710 [ 70.580649][ T6856] ? mark_held_locks+0x9f/0xe0 [ 70.585391][ T6856] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 70.591174][ T6856] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 70.597131][ T6856] ? trace_hardirqs_on+0x5f/0x220 [ 70.602146][ T6856] ? lockdep_hardirqs_on+0x6a/0xe0 [ 70.607236][ T6856] hci_rx_work+0x22e/0xb10 [ 70.611635][ T6856] process_one_work+0x94c/0x1670 [ 70.616578][ T6856] ? lock_release+0x8d0/0x8d0 [ 70.621250][ T6856] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 70.626604][ T6856] ? rwlock_bug.part.0+0x90/0x90 executing program [ 70.631522][ T6856] ? lockdep_hardirqs_off+0x66/0xa0 [ 70.636707][ T6856] worker_thread+0x64c/0x1120 [ 70.641382][ T6856] ? process_one_work+0x1670/0x1670 [ 70.646568][ T6856] kthread+0x3b5/0x4a0 [ 70.650617][ T6856] ? __kthread_bind_mask+0xc0/0xc0 [ 70.655790][ T6856] ? __kthread_bind_mask+0xc0/0xc0 [ 70.660880][ T6856] ret_from_fork+0x1f/0x30 [ 70.665270][ T6856] Modules linked in: [ 70.681233][ T6856] ---[ end trace 21853d94af58332a ]--- [ 70.686739][ T6856] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 70.695351][ T6856] 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 [ 70.715640][ T6856] RSP: 0018:ffffc900018f7a38 EFLAGS: 00010202 [ 70.722026][ T6856] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871af0e3 [ 70.730003][ T6856] RDX: 0000000000000002 RSI: ffffffff871af0f0 RDI: 0000000000000010 [ 70.738043][ T6856] RBP: ffff8880a18f4000 R08: 0000000000000001 R09: ffff88808723aac8 [ 70.746075][ T6856] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 70.754336][ T6856] R13: ffff8880a2545110 R14: ffff8880a260b80b R15: 00000000000000c8 [ 70.762363][ T6856] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 70.771350][ T6856] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.777934][ T6856] CR2: 00007f96b35ce000 CR3: 000000009fb72000 CR4: 00000000001406f0 [ 70.785947][ T6856] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.793967][ T6856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.801986][ T6856] Kernel panic - not syncing: Fatal exception [ 70.809395][ T6856] Kernel Offset: disabled [ 70.813771][ T6856] Rebooting in 86400 seconds..