[ 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 '10.128.1.8' (ECDSA) to the list of known hosts. syzkaller login: [ 129.331785][ T8230] IPVS: ftp: loaded support on port[0] = 21 executing program [ 129.466331][ T8233] ===================================================== [ 129.473302][ T8233] BUG: KMSAN: uninit-value in hci_event_packet+0xf7bb/0x39e50 [ 129.480790][ T8233] CPU: 0 PID: 8233 Comm: kworker/u5:1 Not tainted 5.12.0-rc6-syzkaller #0 [ 129.489300][ T8233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 129.499379][ T8233] Workqueue: hci0 hci_rx_work [ 129.504078][ T8233] Call Trace: [ 129.507358][ T8233] dump_stack+0x24c/0x2e0 [ 129.511705][ T8233] kmsan_report+0xfb/0x1e0 [ 129.516189][ T8233] __msan_warning+0x5c/0xa0 [ 129.520709][ T8233] hci_event_packet+0xf7bb/0x39e50 [ 129.525849][ T8233] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 129.531669][ T8233] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 129.537843][ T8233] ? kmsan_internal_set_origin+0x85/0xc0 [ 129.543577][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.548810][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.554021][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.559323][ T8233] hci_rx_work+0x744/0xcf0 [ 129.563755][ T8233] ? hci_alloc_dev+0x28d0/0x28d0 [ 129.568703][ T8233] process_one_work+0x1219/0x1fe0 [ 129.573756][ T8233] worker_thread+0x10ec/0x2340 [ 129.578543][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.583762][ T8233] kthread+0x521/0x560 [ 129.587842][ T8233] ? process_one_work+0x1fe0/0x1fe0 [ 129.593060][ T8233] ? kthread_blkcg+0x110/0x110 [ 129.597855][ T8233] ret_from_fork+0x1f/0x30 [ 129.602292][ T8233] [ 129.604613][ T8233] Uninit was created at: [ 129.609027][ T8233] kmsan_internal_poison_shadow+0x5c/0xf0 [ 129.614770][ T8233] kmsan_slab_alloc+0x8e/0xe0 [ 129.619460][ T8233] __kmalloc_node_track_caller+0xa4f/0x1470 [ 129.625456][ T8233] __alloc_skb+0x4dd/0xe90 [ 129.629886][ T8233] vhci_write+0x18a/0x880 [ 129.634234][ T8233] vfs_write+0x1083/0x1b00 [ 129.638708][ T8233] ksys_write+0x275/0x500 [ 129.643079][ T8233] __se_sys_write+0x92/0xb0 [ 129.647641][ T8233] __x64_sys_write+0x4a/0x70 [ 129.652250][ T8233] do_syscall_64+0x9f/0x140 [ 129.656772][ T8233] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 129.662678][ T8233] ===================================================== [ 129.669607][ T8233] Disabling lock debugging due to kernel taint [ 129.675793][ T8233] Kernel panic - not syncing: panic_on_kmsan set ... [ 129.682471][ T8233] CPU: 0 PID: 8233 Comm: kworker/u5:1 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 129.692377][ T8233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 129.702445][ T8233] Workqueue: hci0 hci_rx_work [ 129.707166][ T8233] Call Trace: [ 129.710452][ T8233] dump_stack+0x24c/0x2e0 [ 129.714805][ T8233] panic+0x4c6/0xea7 [ 129.718727][ T8233] ? add_taint+0x17c/0x210 [ 129.723157][ T8233] kmsan_report+0x1de/0x1e0 [ 129.727687][ T8233] __msan_warning+0x5c/0xa0 [ 129.732210][ T8233] hci_event_packet+0xf7bb/0x39e50 [ 129.737365][ T8233] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 129.743190][ T8233] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 129.749274][ T8233] ? kmsan_internal_set_origin+0x85/0xc0 [ 129.754923][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.760146][ T8233] ? kmsan_get_metadata+0x116/0x180 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 129.765364][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.770791][ T8233] hci_rx_work+0x744/0xcf0 [ 129.775227][ T8233] ? hci_alloc_dev+0x28d0/0x28d0 [ 129.780180][ T8233] process_one_work+0x1219/0x1fe0 [ 129.785234][ T8233] worker_thread+0x10ec/0x2340 [ 129.790027][ T8233] ? kmsan_get_metadata+0x116/0x180 [ 129.795253][ T8233] kthread+0x521/0x560 [ 129.799340][ T8233] ? process_one_work+0x1fe0/0x1fe0 [ 129.804564][ T8233] ? kthread_blkcg+0x110/0x110 [ 129.809348][ T8233] ret_from_fork+0x1f/0x30 [ 129.814837][ T8233] Kernel Offset: disabled [ 129.819228][ T8233] Rebooting in 86400 seconds..