[ OK ] Started OpenBSD Secure Shell server. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.45' (ECDSA) to the list of known hosts. syzkaller login: [ 58.825894][ T6831] IPVS: ftp: loaded support on port[0] = 21 executing program [ 62.010474][ T2869] Bluetooth: hci0: command 0x0409 tx timeout [ 64.089527][ T2525] Bluetooth: hci0: command 0x041b tx timeout [ 64.962964][ T6859] ------------[ cut here ]------------ [ 64.968641][ T6859] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 64.979194][ T6859] WARNING: CPU: 1 PID: 6859 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 64.988628][ T6859] Kernel panic - not syncing: panic_on_warn set ... [ 64.995209][ T6859] CPU: 1 PID: 6859 Comm: syz-executor543 Not tainted 5.8.0-rc7-syzkaller #0 [ 65.003852][ T6859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.013883][ T6859] Call Trace: [ 65.017156][ T6859] dump_stack+0x18f/0x20d [ 65.021468][ T6859] panic+0x2e3/0x75c [ 65.025361][ T6859] ? __warn_printk+0xf3/0xf3 [ 65.029946][ T6859] ? console_unlock+0x7f0/0xf30 [ 65.034791][ T6859] ? __warn.cold+0x5/0x45 [ 65.039098][ T6859] ? __warn+0xd6/0x1f2 [ 65.043162][ T6859] ? debug_print_object+0x160/0x250 [ 65.048370][ T6859] __warn.cold+0x20/0x45 [ 65.052635][ T6859] ? wake_up_klogd.part.0+0x8c/0xc0 [ 65.057837][ T6859] ? debug_print_object+0x160/0x250 [ 65.063040][ T6859] report_bug+0x1bd/0x210 [ 65.067399][ T6859] handle_bug+0x38/0x90 [ 65.071560][ T6859] exc_invalid_op+0x13/0x40 [ 65.076065][ T6859] asm_exc_invalid_op+0x12/0x20 [ 65.080933][ T6859] RIP: 0010:debug_print_object+0x160/0x250 [ 65.086738][ T6859] Code: dd e0 9f 93 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd e0 9f 93 88 48 c7 c7 40 95 93 88 e8 72 a8 a9 fd <0f> 0b 83 05 5b 06 14 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 65.106349][ T6859] RSP: 0018:ffffc90001697578 EFLAGS: 00010082 [ 65.112422][ T6859] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 65.120393][ T6859] RDX: ffff8880a42d25c0 RSI: ffffffff815d4ef7 RDI: fffff520002d2ea1 [ 65.128358][ T6859] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb [ 65.136312][ T6859] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540 [ 65.144273][ T6859] R13: ffffffff81630df0 R14: ffff8880a77d5200 R15: 1ffff920002d2eba [ 65.152246][ T6859] ? calc_wheel_index+0x230/0x230 [ 65.157282][ T6859] ? vprintk_func+0x97/0x1a6 [ 65.161893][ T6859] ? debug_print_object+0x160/0x250 [ 65.167075][ T6859] debug_object_assert_init+0x1f4/0x2e0 [ 65.172619][ T6859] ? find_held_lock+0x2d/0x110 [ 65.177373][ T6859] ? debug_object_init_on_stack+0x20/0x20 [ 65.183113][ T6859] ? __queue_work+0x653/0xff0 [ 65.187819][ T6859] ? lock_downgrade+0x820/0x820 [ 65.192692][ T6859] del_timer+0x6d/0x110 [ 65.196829][ T6859] ? detach_if_pending+0x4a0/0x4a0 [ 65.201924][ T6859] ? __queue_work+0x675/0xff0 [ 65.206590][ T6859] ? lockdep_hardirqs_off+0x66/0xa0 [ 65.211765][ T6859] ? trace_hardirqs_off+0x76/0x210 [ 65.216856][ T6859] cancel_delayed_work+0xe0/0x450 [ 65.221875][ T6859] ? mod_delayed_work_on+0x2e0/0x2e0 [ 65.227143][ T6859] ? lockdep_hardirqs_on+0x6a/0xe0 [ 65.232239][ T6859] ? queue_delayed_work_on+0x12f/0x210 [ 65.237693][ T6859] l2cap_chan_del+0x541/0x1300 [ 65.242463][ T6859] l2cap_chan_close+0x118/0xb10 [ 65.247325][ T6859] ? l2cap_retransmit_all+0x760/0x760 [ 65.252688][ T6859] ? __mutex_unlock_slowpath+0xe2/0x610 [ 65.258219][ T6859] ? rwlock_bug.part.0+0x90/0x90 [ 65.263149][ T6859] ? wait_for_completion+0x260/0x260 [ 65.268413][ T6859] ? __local_bh_enable_ip+0x159/0x250 [ 65.273793][ T6859] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 65.279102][ T6859] ? trace_hardirqs_on+0x5f/0x220 [ 65.284113][ T6859] l2cap_sock_shutdown+0x3b8/0xe90 [ 65.289208][ T6859] ? lock_acquire+0x1f1/0xad0 [ 65.293883][ T6859] ? bt_sock_unlink+0x1d/0x1c0 [ 65.298638][ T6859] ? l2cap_sock_suspend_cb+0x80/0x80 [ 65.303915][ T6859] ? find_held_lock+0x2d/0x110 [ 65.308671][ T6859] ? l2cap_sock_release+0x56/0x1d0 [ 65.313778][ T6859] ? lock_downgrade+0x820/0x820 [ 65.318605][ T6859] ? do_raw_read_unlock+0x70/0x70 [ 65.323716][ T6859] ? __sock_release+0x280/0x280 [ 65.328544][ T6859] l2cap_sock_release+0x63/0x1d0 [ 65.333466][ T6859] ? __sock_release+0x280/0x280 [ 65.338295][ T6859] __sock_release+0xcd/0x280 [ 65.342880][ T6859] sock_close+0x18/0x20 [ 65.347028][ T6859] __fput+0x33c/0x880 [ 65.351020][ T6859] task_work_run+0xdd/0x190 [ 65.355518][ T6859] do_exit+0xb72/0x2a40 [ 65.359662][ T6859] ? lock_acquire+0x1f1/0xad0 [ 65.364340][ T6859] ? find_held_lock+0x2d/0x110 [ 65.369099][ T6859] ? mm_update_next_owner+0x7a0/0x7a0 [ 65.374472][ T6859] ? get_signal+0x332/0x1ee0 [ 65.379053][ T6859] ? lock_downgrade+0x820/0x820 [ 65.383900][ T6859] ? lock_is_held_type+0xb0/0xe0 [ 65.388820][ T6859] do_group_exit+0x125/0x310 [ 65.393404][ T6859] get_signal+0x40b/0x1ee0 [ 65.397802][ T6859] ? __local_bh_enable_ip+0x159/0x250 [ 65.403175][ T6859] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 65.408373][ T6859] do_signal+0x82/0x2520 [ 65.412609][ T6859] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 65.417795][ T6859] ? __sys_connect_file+0x4e/0x1a0 [ 65.422905][ T6859] ? copy_siginfo_to_user32+0xa0/0xa0 [ 65.428273][ T6859] ? __sys_connect_file+0x1a0/0x1a0 [ 65.433474][ T6859] ? lock_is_held_type+0xb0/0xe0 [ 65.438427][ T6859] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 65.444317][ T6859] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.450293][ T6859] __prepare_exit_to_usermode+0x156/0x1f0 [ 65.456009][ T6859] do_syscall_64+0x6c/0xe0 [ 65.460434][ T6859] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.466336][ T6859] RIP: 0033:0x446d69 [ 65.470222][ T6859] Code: Bad RIP value. [ 65.474277][ T6859] RSP: 002b:00007ffc48ffabc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 65.482690][ T6859] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 65.490842][ T6859] RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004 [ 65.498819][ T6859] RBP: 00007ffc48ffac00 R08: 0000000000000000 R09: 00000000000000ff [ 65.506785][ T6859] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 65.514762][ T6859] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 65.524006][ T6859] Kernel Offset: disabled [ 65.528409][ T6859] Rebooting in 86400 seconds..