[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.33' (ECDSA) to the list of known hosts. syzkaller login: [ 57.069189][ T6848] IPVS: ftp: loaded support on port[0] = 21 executing program [ 59.119557][ T12] Bluetooth: hci0: command 0x0409 tx timeout [ 61.198986][ T2682] Bluetooth: hci0: command 0x041b tx timeout [ 62.177462][ T6881] ------------[ cut here ]------------ [ 62.183179][ T6881] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 62.193375][ T6881] WARNING: CPU: 0 PID: 6881 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 62.202813][ T6881] Kernel panic - not syncing: panic_on_warn set ... [ 62.209383][ T6881] CPU: 0 PID: 6881 Comm: syz-executor674 Not tainted 5.9.0-rc1-syzkaller #0 [ 62.218165][ T6881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.228238][ T6881] Call Trace: [ 62.231573][ T6881] dump_stack+0x18f/0x20d [ 62.235918][ T6881] panic+0x2e3/0x75c [ 62.239797][ T6881] ? __warn_printk+0xf3/0xf3 [ 62.244367][ T6881] ? console_unlock+0x7f0/0xf30 [ 62.249213][ T6881] ? __warn.cold+0x5/0x4a [ 62.253537][ T6881] ? __warn+0xd6/0x1f2 [ 62.257587][ T6881] ? debug_print_object+0x160/0x250 [ 62.262770][ T6881] __warn.cold+0x20/0x4a [ 62.267000][ T6881] ? debug_print_object+0x160/0x250 [ 62.272189][ T6881] report_bug+0x1bd/0x210 [ 62.276500][ T6881] handle_bug+0x38/0x90 [ 62.280723][ T6881] ? __warn_printk+0xc6/0xf3 [ 62.285307][ T6881] exc_invalid_op+0x14/0x40 [ 62.289818][ T6881] asm_exc_invalid_op+0x12/0x20 [ 62.294666][ T6881] RIP: 0010:debug_print_object+0x160/0x250 [ 62.300446][ T6881] Code: dd a0 1d 94 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd a0 1d 94 88 48 c7 c7 00 13 94 88 e8 42 82 a6 fd <0f> 0b 83 05 83 7f 13 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 62.320134][ T6881] RSP: 0018:ffffc90005837570 EFLAGS: 00010086 [ 62.326186][ T6881] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 62.334135][ T6881] RDX: ffff888088f52580 RSI: ffffffff815dafc7 RDI: fffff52000b06ea0 [ 62.342172][ T6881] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620f8b [ 62.350119][ T6881] R10: 0000000000000000 R11: 0000000038383654 R12: ffffffff89be28e0 [ 62.358084][ T6881] R13: ffffffff816386c0 R14: ffff8880a1a8f200 R15: 1ffff92000b06eb9 [ 62.366208][ T6881] ? calc_wheel_index+0x3f0/0x3f0 [ 62.371221][ T6881] ? vprintk_func+0x97/0x1a6 [ 62.375803][ T6881] debug_object_assert_init+0x1f4/0x2e0 [ 62.381347][ T6881] ? find_held_lock+0x2d/0x110 [ 62.386091][ T6881] ? debug_object_init_on_stack+0x20/0x20 [ 62.391787][ T6881] ? __queue_work+0x61a/0xf20 [ 62.396446][ T6881] ? lock_downgrade+0x830/0x830 [ 62.401277][ T6881] del_timer+0x6d/0x110 [ 62.405428][ T6881] ? detach_if_pending+0x4d0/0x4d0 [ 62.410529][ T6881] ? __queue_work+0x63c/0xf20 [ 62.415189][ T6881] ? lockdep_hardirqs_off+0x89/0xc0 [ 62.420367][ T6881] ? trace_hardirqs_off+0x76/0x210 [ 62.425475][ T6881] cancel_delayed_work+0xe0/0x450 [ 62.430493][ T6881] ? mod_delayed_work_on+0x2e0/0x2e0 [ 62.435757][ T6881] ? lockdep_hardirqs_on+0x76/0xf0 [ 62.440865][ T6881] ? queue_delayed_work_on+0x12f/0x210 [ 62.446320][ T6881] l2cap_chan_del+0x541/0x1300 [ 62.451064][ T6881] l2cap_chan_close+0x118/0xb10 [ 62.455893][ T6881] ? l2cap_retransmit_all+0x760/0x760 [ 62.461239][ T6881] ? __mutex_unlock_slowpath+0xe2/0x610 [ 62.466759][ T6881] ? mark_held_locks+0x9f/0xe0 [ 62.471498][ T6881] ? wait_for_completion+0x260/0x260 [ 62.476757][ T6881] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 62.482712][ T6881] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 62.487969][ T6881] ? trace_hardirqs_on+0x5f/0x220 [ 62.493059][ T6881] l2cap_sock_shutdown+0x3b8/0xe90 [ 62.498146][ T6881] ? lock_acquire+0x1f1/0xad0 [ 62.502894][ T6881] ? bt_sock_unlink+0x1d/0x1c0 [ 62.507642][ T6881] ? l2cap_sock_suspend_cb+0x80/0x80 [ 62.512909][ T6881] ? find_held_lock+0x2d/0x110 [ 62.517649][ T6881] ? l2cap_sock_release+0x56/0x1d0 [ 62.522735][ T6881] ? lock_downgrade+0x830/0x830 [ 62.527565][ T6881] ? do_raw_read_unlock+0x70/0x70 [ 62.532581][ T6881] l2cap_sock_release+0x63/0x1d0 [ 62.537512][ T6881] __sock_release+0xcd/0x280 [ 62.542252][ T6881] sock_close+0x18/0x20 [ 62.546556][ T6881] __fput+0x285/0x920 [ 62.550522][ T6881] ? __sock_release+0x280/0x280 [ 62.555380][ T6881] task_work_run+0xdd/0x190 [ 62.559871][ T6881] do_exit+0xb7d/0x29f0 [ 62.564095][ T6881] ? lock_acquire+0x1f1/0xad0 [ 62.568752][ T6881] ? find_held_lock+0x2d/0x110 [ 62.573500][ T6881] ? mm_update_next_owner+0x7a0/0x7a0 [ 62.578850][ T6881] ? get_signal+0x34f/0x1f00 [ 62.583433][ T6881] ? lock_downgrade+0x830/0x830 [ 62.588370][ T6881] ? lock_is_held_type+0xbb/0xf0 [ 62.593309][ T6881] do_group_exit+0x125/0x310 [ 62.598225][ T6881] get_signal+0x428/0x1f00 [ 62.602631][ T6881] ? __local_bh_enable_ip+0xd1/0x190 [ 62.607930][ T6881] arch_do_signal+0x82/0x2520 [ 62.613024][ T6881] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 62.618557][ T6881] ? __sys_connect_file+0x4e/0x1a0 [ 62.623645][ T6881] ? copy_siginfo_to_user32+0xa0/0xa0 [ 62.628989][ T6881] ? __sys_connect+0x10a/0x190 [ 62.633725][ T6881] ? __sys_connect_file+0x1a0/0x1a0 [ 62.638922][ T6881] ? exit_to_user_mode_prepare+0xb9/0x1c0 [ 62.644821][ T6881] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 62.650818][ T6881] exit_to_user_mode_prepare+0x15d/0x1c0 [ 62.656540][ T6881] syscall_exit_to_user_mode+0x59/0x2b0 [ 62.662175][ T6881] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.668313][ T6881] RIP: 0033:0x446d99 [ 62.672197][ T6881] Code: Bad RIP value. [ 62.677029][ T6881] RSP: 002b:00007ffdaea64ef8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 62.685532][ T6881] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d99 [ 62.693837][ T6881] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004 [ 62.701892][ T6881] RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff [ 62.709869][ T6881] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000011c3850 [ 62.718042][ T6881] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 62.727490][ T6881] Kernel Offset: disabled [ 62.731869][ T6881] Rebooting in 86400 seconds..