[ 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 '10.128.0.12' (ECDSA) to the list of known hosts. syzkaller login: [ 67.987002][ T29] audit: type=1400 audit(1596393318.728:8): avc: denied { execmem } for pid=6837 comm="syz-executor692" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 68.003114][ T6838] IPVS: ftp: loaded support on port[0] = 21 executing program [ 69.152491][ T6861] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 69.164227][ T6861] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 69.172660][ T6861] CPU: 1 PID: 6861 Comm: kworker/u5:1 Not tainted 5.8.0-rc7-syzkaller #0 [ 69.181088][ T6861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.191149][ T6861] Workqueue: hci0 hci_rx_work [ 69.202961][ T6861] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 69.209984][ 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 [ 69.229616][ T6861] RSP: 0018:ffffc90001897a38 EFLAGS: 00010202 [ 69.235679][ T6861] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871af0e3 [ 69.243647][ T6861] RDX: 0000000000000002 RSI: ffffffff871af0f0 RDI: 0000000000000010 [ 69.251633][ T6861] RBP: ffff88808f25e000 R08: 0000000000000001 R09: ffff8880a1cf6a88 [ 69.259617][ T6861] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 69.267596][ T6861] R13: ffff8880877f1110 R14: ffff8880926b480b R15: 00000000000000c8 [ 69.275571][ T6861] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 69.284489][ T6861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.291233][ T6861] CR2: 0000000020000000 CR3: 00000000a7ccc000 CR4: 00000000001406e0 [ 69.299218][ T6861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.307201][ T6861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.315172][ T6861] Call Trace: [ 69.318468][ T6861] hci_event_packet+0x481a/0x86f5 [ 69.323598][ T6861] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 69.329579][ T6861] ? __lock_acquire+0x16e3/0x56e0 [ 69.334600][ T6861] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 69.340137][ T6861] ? lock_acquire+0x1f1/0xad0 [ 69.344810][ T6861] ? skb_dequeue+0x1c/0x180 [ 69.349306][ T6861] ? find_held_lock+0x2d/0x110 [ 69.354057][ T6861] ? mark_lock+0xbc/0x1710 [ 69.358497][ T6861] ? mark_held_locks+0x9f/0xe0 [ 69.363253][ T6861] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 69.369052][ T6861] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 69.375041][ T6861] ? trace_hardirqs_on+0x5f/0x220 [ 69.380071][ T6861] ? lockdep_hardirqs_on+0x6a/0xe0 [ 69.385179][ T6861] hci_rx_work+0x22e/0xb10 [ 69.389591][ T6861] process_one_work+0x94c/0x1670 [ 69.394562][ T6861] ? lock_release+0x8d0/0x8d0 [ 69.399268][ T6861] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 69.404652][ T6861] ? rwlock_bug.part.0+0x90/0x90 [ 69.409606][ T6861] ? lockdep_hardirqs_off+0x66/0xa0 [ 69.415413][ T6861] worker_thread+0x64c/0x1120 [ 69.420138][ T6861] ? process_one_work+0x1670/0x1670 [ 69.426130][ T6861] kthread+0x3b5/0x4a0 [ 69.430193][ T6861] ? __kthread_bind_mask+0xc0/0xc0 [ 69.435293][ T6861] ? __kthread_bind_mask+0xc0/0xc0 [ 69.440421][ T6861] ret_from_fork+0x1f/0x30 [ 69.444829][ T6861] Modules linked in: [ 69.452661][ T6861] ---[ end trace 905ef6786a414f06 ]--- [ 69.458144][ T6861] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 69.465298][ 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 [ 69.485059][ T6861] RSP: 0018:ffffc90001897a38 EFLAGS: 00010202 [ 69.491131][ T6861] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871af0e3 [ 69.499278][ T6861] RDX: 0000000000000002 RSI: ffffffff871af0f0 RDI: 0000000000000010 [ 69.507326][ T6861] RBP: ffff88808f25e000 R08: 0000000000000001 R09: ffff8880a1cf6a88 [ 69.515398][ T6861] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 69.523446][ T6861] R13: ffff8880877f1110 R14: ffff8880926b480b R15: 00000000000000c8 [ 69.531444][ T6861] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 69.540439][ T6861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.547079][ T6861] CR2: 00007fff77d3f7a7 CR3: 000000009291e000 CR4: 00000000001406e0 [ 69.555114][ T6861] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.563147][ T6861] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.571119][ T6861] Kernel panic - not syncing: Fatal exception [ 69.578159][ T6861] Kernel Offset: disabled [ 69.582476][ T6861] Rebooting in 86400 seconds..