[ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [*** ] A start job is running for OpenBSD …Shell server (1min 21s / 2min 40s) [** ] A start job is running for OpenBSD …Shell server (1min 22s / 2min 40s) [* ] A start job is running for OpenBSD …Shell server (1min 24s / 2min 53s) [ OK ] Started OpenBSD Secure Shell server. [ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.15.209' (ECDSA) to the list of known hosts. syzkaller login: [ 139.232326][ T8480] IPVS: ftp: loaded support on port[0] = 21 executing program [ 139.488245][ T2280] ===================================================== [ 139.495252][ T2280] BUG: KMSAN: uninit-value in hci_chan_lookup_handle+0x1e3/0x310 [ 139.502981][ T2280] CPU: 1 PID: 2280 Comm: kworker/u5:0 Not tainted 5.8.0-rc5-syzkaller #0 [ 139.511394][ T2280] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.521465][ T2280] Workqueue: hci0 hci_rx_work [ 139.526145][ T2280] Call Trace: [ 139.529446][ T2280] dump_stack+0x21c/0x280 [ 139.533789][ T2280] kmsan_report+0xf7/0x1e0 [ 139.538216][ T2280] __msan_warning+0x58/0xa0 [ 139.542732][ T2280] hci_chan_lookup_handle+0x1e3/0x310 [ 139.548120][ T2280] hci_event_packet+0x14e10/0x39d30 [ 139.553331][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.558716][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.563892][ T2280] ? kmsan_set_origin_checked+0x95/0xf0 [ 139.569413][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.574585][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.579807][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.585025][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.590203][ T2280] hci_rx_work+0x6df/0xd30 [ 139.594600][ T2280] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 139.600383][ T2280] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 139.606427][ T2280] ? hci_alloc_dev+0x2680/0x2680 [ 139.611471][ T2280] process_one_work+0x1688/0x2140 [ 139.616514][ T2280] worker_thread+0x10bc/0x2730 [ 139.621255][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.626429][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.631609][ T2280] kthread+0x551/0x590 [ 139.635665][ T2280] ? process_one_work+0x2140/0x2140 [ 139.640966][ T2280] ? kthread_blkcg+0x110/0x110 [ 139.645708][ T2280] ret_from_fork+0x1f/0x30 [ 139.650103][ T2280] [ 139.652406][ T2280] Uninit was created at: [ 139.656631][ T2280] kmsan_internal_poison_shadow+0x66/0xd0 [ 139.662336][ T2280] kmsan_slab_alloc+0x8a/0xe0 [ 139.666997][ T2280] __kmalloc_node_track_caller+0xeab/0x12e0 [ 139.672869][ T2280] __alloc_skb+0x35f/0xb30 [ 139.677263][ T2280] vhci_write+0x18a/0x890 [ 139.681566][ T2280] vfs_write+0xf9a/0x17c0 [ 139.685871][ T2280] ksys_write+0x275/0x500 [ 139.690175][ T2280] __se_sys_write+0x92/0xb0 [ 139.694653][ T2280] __x64_sys_write+0x4a/0x70 [ 139.699222][ T2280] do_syscall_64+0xad/0x160 [ 139.703748][ T2280] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 139.709609][ T2280] ===================================================== [ 139.716574][ T2280] Disabling lock debugging due to kernel taint [ 139.722698][ T2280] Kernel panic - not syncing: panic_on_warn set ... [ 139.729265][ T2280] CPU: 1 PID: 2280 Comm: kworker/u5:0 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 139.739120][ T2280] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 139.749177][ T2280] Workqueue: hci0 hci_rx_work [ 139.753826][ T2280] Call Trace: [ 139.757112][ T2280] dump_stack+0x21c/0x280 [ 139.761425][ T2280] panic+0x4d7/0xef7 [ 139.765327][ T2280] ? add_taint+0x17c/0x210 [ 139.769738][ T2280] kmsan_report+0x1df/0x1e0 [ 139.774240][ T2280] __msan_warning+0x58/0xa0 [ 139.778726][ T2280] hci_chan_lookup_handle+0x1e3/0x310 [ 139.784080][ T2280] hci_event_packet+0x14e10/0x39d30 [ 139.789269][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.794448][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.799622][ T2280] ? kmsan_set_origin_checked+0x95/0xf0 [ 139.805160][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.810363][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.815590][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.820770][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.825949][ T2280] hci_rx_work+0x6df/0xd30 [ 139.830354][ T2280] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 139.836139][ T2280] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 139.842183][ T2280] ? hci_alloc_dev+0x2680/0x2680 [ 139.847147][ T2280] process_one_work+0x1688/0x2140 [ 139.852158][ T2280] worker_thread+0x10bc/0x2730 [ 139.857022][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.862211][ T2280] ? kmsan_get_metadata+0x116/0x180 [ 139.867402][ T2280] kthread+0x551/0x590 [ 139.871448][ T2280] ? process_one_work+0x2140/0x2140 [ 139.876623][ T2280] ? kthread_blkcg+0x110/0x110 [ 139.881365][ T2280] ret_from_fork+0x1f/0x30 [ 139.887082][ T2280] Kernel Offset: disabled [ 139.891400][ T2280] Rebooting in 86400 seconds..