Starting System Logging Service... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started System Logging Service. [ **] A start job is running for OpenBSD …Shell server (1min 26s / 2min 43s) [ *] A start job is running for OpenBSD …Shell server (1min 28s / 2min 56s) [ 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 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 '10.128.0.172' (ECDSA) to the list of known hosts. syzkaller login: [ 147.436410][ T8486] IPVS: ftp: loaded support on port[0] = 21 executing program [ 147.604406][ T8487] ===================================================== [ 147.611448][ T8487] BUG: KMSAN: uninit-value in hci_event_packet+0x9c58/0x39d30 [ 147.627884][ T8487] CPU: 0 PID: 8487 Comm: kworker/u5:1 Not tainted 5.8.0-rc5-syzkaller #0 [ 147.636432][ T8487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.646525][ T8487] Workqueue: hci0 hci_rx_work [ 147.651220][ T8487] Call Trace: [ 147.654537][ T8487] dump_stack+0x21c/0x280 [ 147.658898][ T8487] kmsan_report+0xf7/0x1e0 [ 147.663355][ T8487] __msan_warning+0x58/0xa0 [ 147.667883][ T8487] hci_event_packet+0x9c58/0x39d30 [ 147.673024][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.678251][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.683476][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.688683][ T8487] ? kmsan_get_metadata+0x110/0x180 [ 147.693910][ T8487] ? kmsan_get_metadata+0x110/0x180 [ 147.699117][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.704330][ T8487] hci_rx_work+0x6df/0xd30 [ 147.708760][ T8487] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 147.714567][ T8487] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 147.720640][ T8487] ? hci_alloc_dev+0x2680/0x2680 [ 147.725567][ T8487] process_one_work+0x1688/0x2140 [ 147.730598][ T8487] worker_thread+0x10bc/0x2730 [ 147.735376][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.740567][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.745769][ T8487] kthread+0x551/0x590 [ 147.749831][ T8487] ? process_one_work+0x2140/0x2140 [ 147.755043][ T8487] ? kthread_blkcg+0x110/0x110 [ 147.759801][ T8487] ret_from_fork+0x1f/0x30 [ 147.764729][ T8487] [ 147.767056][ T8487] Uninit was created at: [ 147.771305][ T8487] kmsan_internal_poison_shadow+0x66/0xd0 [ 147.777030][ T8487] kmsan_slab_alloc+0x8a/0xe0 [ 147.781709][ T8487] __kmalloc_node_track_caller+0xeab/0x12e0 [ 147.787609][ T8487] __alloc_skb+0x35f/0xb30 [ 147.792025][ T8487] vhci_write+0x18a/0x890 [ 147.796338][ T8487] vfs_write+0xf9a/0x17c0 [ 147.800664][ T8487] ksys_write+0x275/0x500 [ 147.804980][ T8487] __se_sys_write+0x92/0xb0 [ 147.809480][ T8487] __x64_sys_write+0x4a/0x70 [ 147.814056][ T8487] do_syscall_64+0xad/0x160 [ 147.818562][ T8487] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 147.824430][ T8487] ===================================================== [ 147.831353][ T8487] Disabling lock debugging due to kernel taint [ 147.837501][ T8487] Kernel panic - not syncing: panic_on_warn set ... [ 147.844079][ T8487] CPU: 0 PID: 8487 Comm: kworker/u5:1 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 147.853864][ T8487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 147.863986][ T8487] Workqueue: hci0 hci_rx_work [ 147.868667][ T8487] Call Trace: [ 147.872658][ T8487] dump_stack+0x21c/0x280 [ 147.876985][ T8487] panic+0x4d7/0xef7 [ 147.880896][ T8487] ? add_taint+0x17c/0x210 [ 147.885318][ T8487] kmsan_report+0x1df/0x1e0 [ 147.889837][ T8487] __msan_warning+0x58/0xa0 [ 147.894342][ T8487] hci_event_packet+0x9c58/0x39d30 [ 147.899451][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.904644][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.909862][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.915056][ T8487] ? kmsan_get_metadata+0x110/0x180 [ 147.920265][ T8487] ? kmsan_get_metadata+0x110/0x180 [ 147.925463][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.930656][ T8487] hci_rx_work+0x6df/0xd30 [ 147.935084][ T8487] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 147.940881][ T8487] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 147.947305][ T8487] ? hci_alloc_dev+0x2680/0x2680 [ 147.952250][ T8487] process_one_work+0x1688/0x2140 [ 147.957302][ T8487] worker_thread+0x10bc/0x2730 [ 147.962056][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.967246][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 147.972447][ T8487] kthread+0x551/0x590 [ 147.976517][ T8487] ? process_one_work+0x2140/0x2140 [ 147.981724][ T8487] ? kthread_blkcg+0x110/0x110 [ 147.986478][ T8487] ret_from_fork+0x1f/0x30 [ 147.991449][ T8487] ------------[ cut here ]------------ [ 147.996905][ T8487] kernel BUG at mm/kmsan/kmsan.h:87! [ 148.002185][ T8487] invalid opcode: 0000 [#1] SMP [ 148.007023][ T8487] CPU: 0 PID: 8487 Comm: kworker/u5:1 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 148.016806][ T8487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.026865][ T8487] Workqueue: hci0 hci_rx_work [ 148.031544][ T8487] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 148.038142][ T8487] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 b0 63 e1 91 31 c0 e8 f8 02 30 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 c2 13 b0 0e 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 148.057761][ T8487] RSP: 0018:ffff8880b94475f8 EFLAGS: 00010046 [ 148.063822][ T8487] RAX: 0000000000000002 RBX: 00000000067d00de RCX: 00000000067d00de [ 148.071795][ T8487] RDX: 0000000000000000 RSI: 00000000000002e0 RDI: ffff8880b94476dc [ 148.079763][ T8487] RBP: ffff8880b94476a0 R08: ffffea000000000f R09: ffff88812fffa000 [ 148.087762][ T8487] R10: 0000000000000002 R11: ffff888120e73d00 R12: 0000000000000000 [ 148.095722][ T8487] R13: 0000000000000001 R14: 0000000000000006 R15: 0000000000000001 [ 148.103682][ T8487] FS: 0000000000000000(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 148.112612][ T8487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 148.119183][ T8487] CR2: 0000556a9e89f160 CR3: 00000000b7086000 CR4: 00000000001406f0 [ 148.127161][ T8487] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 148.135136][ T8487] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 148.143729][ T8487] Call Trace: [ 148.147047][ T8487] kmsan_check_memory+0xd/0x10 [ 148.151808][ T8487] iowrite8+0x99/0x300 [ 148.155905][ T8487] pvpanic_panic_notify+0xb7/0xe0 [ 148.160933][ T8487] ? pvpanic_mmio_remove+0x60/0x60 [ 148.166168][ T8487] atomic_notifier_call_chain+0x123/0x290 [ 148.171908][ T8487] panic+0x560/0xef7 [ 148.175810][ T8487] ? add_taint+0x17c/0x210 [ 148.180238][ T8487] kmsan_report+0x1df/0x1e0 [ 148.184739][ T8487] __msan_warning+0x58/0xa0 [ 148.189252][ T8487] hci_event_packet+0x9c58/0x39d30 [ 148.194355][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 148.199556][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 148.204762][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 148.209951][ T8487] ? kmsan_get_metadata+0x110/0x180 [ 148.215143][ T8487] ? kmsan_get_metadata+0x110/0x180 [ 148.220356][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 148.225565][ T8487] hci_rx_work+0x6df/0xd30 [ 148.229979][ T8487] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 148.235827][ T8487] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 148.241896][ T8487] ? hci_alloc_dev+0x2680/0x2680 [ 148.246850][ T8487] process_one_work+0x1688/0x2140 [ 148.251887][ T8487] worker_thread+0x10bc/0x2730 [ 148.256641][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 148.261853][ T8487] ? kmsan_get_metadata+0x116/0x180 [ 148.267057][ T8487] kthread+0x551/0x590 [ 148.271124][ T8487] ? process_one_work+0x2140/0x2140 [ 148.276315][ T8487] ? kthread_blkcg+0x110/0x110 [ 148.281074][ T8487] ret_from_fork+0x1f/0x30 [ 148.285502][ T8487] Modules linked in: [ 148.289408][ T8487] ---[ end trace ace0fdc2e5c794fb ]--- [ 148.294863][ T8487] RIP: 0010:kmsan_internal_check_memory+0x3c0/0x3d0 [ 148.301438][ T8487] Code: 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 b0 63 e1 91 31 c0 e8 f8 02 30 ff 0f 0b 0f 0b 0f 0b 0f 0b e8 c2 13 b0 0e 0f 0b <0f> 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 83 ff [ 148.321035][ T8487] RSP: 0018:ffff8880b94475f8 EFLAGS: 00010046 [ 148.327111][ T8487] RAX: 0000000000000002 RBX: 00000000067d00de RCX: 00000000067d00de [ 148.335073][ T8487] RDX: 0000000000000000 RSI: 00000000000002e0 RDI: ffff8880b94476dc [ 148.343040][ T8487] RBP: ffff8880b94476a0 R08: ffffea000000000f R09: ffff88812fffa000 [ 148.351005][ T8487] R10: 0000000000000002 R11: ffff888120e73d00 R12: 0000000000000000 [ 148.358982][ T8487] R13: 0000000000000001 R14: 0000000000000006 R15: 0000000000000001 [ 148.366951][ T8487] FS: 0000000000000000(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 [ 148.375871][ T8487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 148.382456][ T8487] CR2: 0000556a9e89f160 CR3: 00000000b7086000 CR4: 00000000001406f0 [ 148.390435][ T8487] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 148.398403][ T8487] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 148.406368][ T8487] Kernel panic - not syncing: Fatal exception [ 148.413095][ T8487] Kernel Offset: disabled [ 148.417442][ T8487] Rebooting in 86400 seconds..