Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Regular background program processing daemon. Starting OpenBSD Secure Shell server... [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ 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 '10.128.0.214' (ECDSA) to the list of known hosts. syzkaller login: [ 73.005465][ T28] audit: type=1400 audit(1596265718.448:8): avc: denied { execmem } for pid=6830 comm="syz-executor324" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 73.020569][ T6831] IPVS: ftp: loaded support on port[0] = 21 executing program [ 74.162374][ T1533] ================================================================== [ 74.170599][ T1533] BUG: KASAN: slab-out-of-bounds in hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.179736][ T1533] Read of size 6 at addr ffff8880a1e8fdfb by task kworker/u5:0/1533 [ 74.187702][ T1533] [ 74.190034][ T1533] CPU: 0 PID: 1533 Comm: kworker/u5:0 Not tainted 5.8.0-rc7-syzkaller #0 [ 74.198435][ T1533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.208494][ T1533] Workqueue: hci0 hci_rx_work [ 74.213167][ T1533] Call Trace: [ 74.216457][ T1533] dump_stack+0x18f/0x20d [ 74.220791][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.227206][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.233642][ T1533] print_address_description.constprop.0.cold+0xae/0x436 [ 74.240669][ T1533] ? lockdep_hardirqs_off+0x66/0xa0 [ 74.245868][ T1533] ? vprintk_func+0x97/0x1a6 [ 74.250484][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.256921][ T1533] kasan_report.cold+0x1f/0x37 [ 74.261721][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.268136][ T1533] check_memory_region+0x13d/0x180 [ 74.273252][ T1533] memcpy+0x20/0x60 [ 74.277065][ T1533] hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.283312][ T1533] ? process_adv_report+0xfb0/0xfb0 [ 74.288520][ T1533] hci_event_packet+0x1e8c/0x86f5 [ 74.293554][ T1533] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 74.299570][ T1533] ? __lock_acquire+0x16e3/0x56e0 [ 74.304619][ T1533] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 74.310188][ T1533] ? lock_acquire+0x1f1/0xad0 [ 74.314874][ T1533] ? skb_dequeue+0x1c/0x180 [ 74.319384][ T1533] ? find_held_lock+0x2d/0x110 [ 74.324151][ T1533] ? mark_lock+0xbc/0x1710 [ 74.328573][ T1533] ? mark_held_locks+0x9f/0xe0 [ 74.333337][ T1533] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.339136][ T1533] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.345123][ T1533] ? trace_hardirqs_on+0x5f/0x220 [ 74.350141][ T1533] ? lockdep_hardirqs_on+0x6a/0xe0 [ 74.355271][ T1533] hci_rx_work+0x22e/0xb10 [ 74.359690][ T1533] process_one_work+0x94c/0x1670 [ 74.364632][ T1533] ? lock_release+0x8d0/0x8d0 [ 74.369302][ T1533] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 74.374670][ T1533] ? rwlock_bug.part.0+0x90/0x90 [ 74.379610][ T1533] ? lockdep_hardirqs_off+0x66/0xa0 [ 74.384804][ T1533] worker_thread+0x64c/0x1120 [ 74.389487][ T1533] ? process_one_work+0x1670/0x1670 [ 74.394709][ T1533] kthread+0x3b5/0x4a0 [ 74.398792][ T1533] ? __kthread_bind_mask+0xc0/0xc0 [ 74.403903][ T1533] ? __kthread_bind_mask+0xc0/0xc0 [ 74.409008][ T1533] ret_from_fork+0x1f/0x30 [ 74.413420][ T1533] [ 74.415736][ T1533] Allocated by task 6831: [ 74.420062][ T1533] save_stack+0x1b/0x40 [ 74.424207][ T1533] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 74.429838][ T1533] __alloc_skb+0xae/0x550 [ 74.434168][ T1533] vhci_write+0xbd/0x450 [ 74.438417][ T1533] new_sync_write+0x422/0x650 [ 74.443096][ T1533] vfs_write+0x59d/0x6b0 [ 74.447621][ T1533] ksys_write+0x12d/0x250 [ 74.451964][ T1533] do_syscall_64+0x60/0xe0 [ 74.456373][ T1533] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 74.462246][ T1533] [ 74.464595][ T1533] Freed by task 6743: [ 74.468565][ T1533] save_stack+0x1b/0x40 [ 74.472713][ T1533] __kasan_slab_free+0xf5/0x140 [ 74.477552][ T1533] kfree+0x103/0x2c0 [ 74.481442][ T1533] security_get_user_sids+0xd09/0x1240 [ 74.486888][ T1533] sel_write_user+0x36b/0x5a0 [ 74.491552][ T1533] selinux_transaction_write+0xe9/0x150 [ 74.497097][ T1533] vfs_write+0x2b0/0x6b0 [ 74.501326][ T1533] ksys_write+0x12d/0x250 [ 74.505644][ T1533] do_syscall_64+0x60/0xe0 [ 74.510048][ T1533] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 74.515918][ T1533] [ 74.518237][ T1533] The buggy address belongs to the object at ffff8880a1e8fc00 [ 74.518237][ T1533] which belongs to the cache kmalloc-512 of size 512 [ 74.532276][ T1533] The buggy address is located 507 bytes inside of [ 74.532276][ T1533] 512-byte region [ffff8880a1e8fc00, ffff8880a1e8fe00) [ 74.545540][ T1533] The buggy address belongs to the page: [ 74.551161][ T1533] page:ffffea000287a3c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880a1e8f400 [ 74.561563][ T1533] flags: 0xfffe0000000200(slab) [ 74.566408][ T1533] raw: 00fffe0000000200 ffffea00029189c8 ffffea00029eb148 ffff8880aa000a80 [ 74.574998][ T1533] raw: ffff8880a1e8f400 ffff8880a1e8f000 0000000100000002 0000000000000000 [ 74.583561][ T1533] page dumped because: kasan: bad access detected [ 74.589978][ T1533] [ 74.592290][ T1533] Memory state around the buggy address: [ 74.597906][ T1533] ffff8880a1e8fd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 74.605955][ T1533] ffff8880a1e8fd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 74.614006][ T1533] >ffff8880a1e8fe00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 74.622069][ T1533] ^ [ 74.626156][ T1533] ffff8880a1e8fe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 74.634204][ T1533] ffff8880a1e8ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 74.642247][ T1533] ================================================================== [ 74.650289][ T1533] Disabling lock debugging due to kernel taint [ 74.658248][ T1533] Kernel panic - not syncing: panic_on_warn set ... [ 74.664853][ T1533] CPU: 0 PID: 1533 Comm: kworker/u5:0 Tainted: G B 5.8.0-rc7-syzkaller #0 [ 74.674643][ T1533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.684698][ T1533] Workqueue: hci0 hci_rx_work [ 74.689364][ T1533] Call Trace: [ 74.692647][ T1533] dump_stack+0x18f/0x20d [ 74.696976][ T1533] ? hci_inquiry_result_with_rssi_evt+0x140/0x6b0 [ 74.703408][ T1533] panic+0x2e3/0x75c [ 74.707298][ T1533] ? __warn_printk+0xf3/0xf3 [ 74.711898][ T1533] ? preempt_schedule_common+0x59/0xc0 [ 74.717357][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.723771][ T1533] ? preempt_schedule_thunk+0x16/0x18 [ 74.729146][ T1533] ? trace_hardirqs_on+0x55/0x220 [ 74.734167][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.740581][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.747004][ T1533] end_report+0x4d/0x53 [ 74.751150][ T1533] kasan_report.cold+0xd/0x37 [ 74.755801][ T1533] ? hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.762186][ T1533] check_memory_region+0x13d/0x180 [ 74.767294][ T1533] memcpy+0x20/0x60 [ 74.771103][ T1533] hci_inquiry_result_with_rssi_evt+0x230/0x6b0 [ 74.777315][ T1533] ? process_adv_report+0xfb0/0xfb0 [ 74.782503][ T1533] hci_event_packet+0x1e8c/0x86f5 [ 74.787510][ T1533] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 74.793461][ T1533] ? __lock_acquire+0x16e3/0x56e0 [ 74.798454][ T1533] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 74.803969][ T1533] ? lock_acquire+0x1f1/0xad0 [ 74.808631][ T1533] ? skb_dequeue+0x1c/0x180 [ 74.813104][ T1533] ? find_held_lock+0x2d/0x110 [ 74.817840][ T1533] ? mark_lock+0xbc/0x1710 [ 74.822229][ T1533] ? mark_held_locks+0x9f/0xe0 [ 74.826973][ T1533] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.832749][ T1533] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.838698][ T1533] ? trace_hardirqs_on+0x5f/0x220 [ 74.843693][ T1533] ? lockdep_hardirqs_on+0x6a/0xe0 [ 74.848773][ T1533] hci_rx_work+0x22e/0xb10 [ 74.853170][ T1533] process_one_work+0x94c/0x1670 [ 74.858080][ T1533] ? lock_release+0x8d0/0x8d0 [ 74.862730][ T1533] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 74.868072][ T1533] ? rwlock_bug.part.0+0x90/0x90 [ 74.872981][ T1533] ? lockdep_hardirqs_off+0x66/0xa0 [ 74.878151][ T1533] worker_thread+0x64c/0x1120 [ 74.882803][ T1533] ? process_one_work+0x1670/0x1670 [ 74.887990][ T1533] kthread+0x3b5/0x4a0 [ 74.892032][ T1533] ? __kthread_bind_mask+0xc0/0xc0 [ 74.897129][ T1533] ? __kthread_bind_mask+0xc0/0xc0 [ 74.902214][ T1533] ret_from_fork+0x1f/0x30 [ 74.907508][ T1533] Kernel Offset: disabled [ 74.911816][ T1533] Rebooting in 86400 seconds..