[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.47' (ECDSA) to the list of known hosts. syzkaller login: [ 57.641873][ T6824] IPVS: ftp: loaded support on port[0] = 21 executing program [ 60.769725][ T3206] Bluetooth: hci0: command 0x0409 tx timeout [ 62.848700][ T2526] Bluetooth: hci0: command 0x041b tx timeout [ 63.724759][ T6854] ------------[ cut here ]------------ [ 63.730597][ T6854] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 63.740442][ T6854] WARNING: CPU: 0 PID: 6854 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 63.750010][ T6854] Kernel panic - not syncing: panic_on_warn set ... [ 63.756753][ T6854] CPU: 0 PID: 6854 Comm: syz-executor987 Not tainted 5.8.0-rc6-syzkaller #0 [ 63.765398][ T6854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.776445][ T6854] Call Trace: [ 63.779726][ T6854] dump_stack+0x18f/0x20d [ 63.784046][ T6854] panic+0x2e3/0x75c [ 63.787920][ T6854] ? __warn_printk+0xf3/0xf3 [ 63.792493][ T6854] ? console_unlock+0x7f0/0xf30 [ 63.797865][ T6854] ? __warn.cold+0x5/0x45 [ 63.802175][ T6854] ? __warn+0xd6/0x1f2 [ 63.806245][ T6854] ? debug_print_object+0x160/0x250 [ 63.811426][ T6854] __warn.cold+0x20/0x45 [ 63.815668][ T6854] ? wake_up_klogd.part.0+0x8c/0xc0 [ 63.821159][ T6854] ? debug_print_object+0x160/0x250 [ 63.826365][ T6854] report_bug+0x1bd/0x210 [ 63.831031][ T6854] handle_bug+0x38/0x90 [ 63.835177][ T6854] exc_invalid_op+0x13/0x40 [ 63.839937][ T6854] asm_exc_invalid_op+0x12/0x20 [ 63.844856][ T6854] RIP: 0010:debug_print_object+0x160/0x250 [ 63.851173][ T6854] Code: dd 40 ac 93 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 40 ac 93 88 48 c7 c7 a0 a1 93 88 e8 c2 81 a9 fd <0f> 0b 83 05 0b 8b 15 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 63.872705][ T6854] RSP: 0018:ffffc90001647578 EFLAGS: 00010082 [ 63.878858][ T6854] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 63.887111][ T6854] RDX: ffff88808ad9e340 RSI: ffffffff815d3fe7 RDI: fffff520002c8ea1 [ 63.895393][ T6854] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620fcb [ 63.903352][ T6854] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89be0240 [ 63.911392][ T6854] R13: ffffffff8162fee0 R14: ffff88809ea4b200 R15: 1ffff920002c8eba [ 63.919823][ T6854] ? calc_wheel_index+0x230/0x230 [ 63.926003][ T6854] ? vprintk_func+0x97/0x1a6 [ 63.931229][ T6854] ? debug_print_object+0x160/0x250 [ 63.939509][ T6854] debug_object_assert_init+0x1f4/0x2e0 [ 63.945459][ T6854] ? find_held_lock+0x2d/0x110 [ 63.950206][ T6854] ? debug_object_init_on_stack+0x20/0x20 [ 63.956538][ T6854] ? __queue_work+0x653/0xff0 [ 63.961415][ T6854] ? lock_downgrade+0x820/0x820 [ 63.967491][ T6854] del_timer+0x6d/0x110 [ 63.971747][ T6854] ? detach_if_pending+0x4a0/0x4a0 [ 63.977073][ T6854] ? __queue_work+0x675/0xff0 [ 63.982285][ T6854] ? lockdep_hardirqs_off+0x66/0xa0 [ 63.988124][ T6854] ? trace_hardirqs_off+0x76/0x210 [ 63.993240][ T6854] cancel_delayed_work+0xe0/0x450 [ 63.998279][ T6854] ? mod_delayed_work_on+0x2e0/0x2e0 [ 64.003821][ T6854] ? lockdep_hardirqs_on+0x6a/0xe0 [ 64.009472][ T6854] ? queue_delayed_work_on+0x12f/0x210 [ 64.015453][ T6854] l2cap_chan_del+0x541/0x1300 [ 64.020317][ T6854] l2cap_chan_close+0x118/0xb10 [ 64.025172][ T6854] ? l2cap_retransmit_all+0x760/0x760 [ 64.030520][ T6854] ? __mutex_unlock_slowpath+0xe2/0x610 [ 64.036040][ T6854] ? rwlock_bug.part.0+0x90/0x90 [ 64.040961][ T6854] ? wait_for_completion+0x260/0x260 [ 64.046222][ T6854] ? __local_bh_enable_ip+0x159/0x250 [ 64.052093][ T6854] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 64.058662][ T6854] ? trace_hardirqs_on+0x5f/0x220 [ 64.064027][ T6854] l2cap_sock_shutdown+0x3b8/0xe90 [ 64.069313][ T6854] ? lock_acquire+0x1f1/0xad0 [ 64.073969][ T6854] ? bt_sock_unlink+0x1d/0x1c0 [ 64.078712][ T6854] ? l2cap_sock_suspend_cb+0x80/0x80 [ 64.083972][ T6854] ? find_held_lock+0x2d/0x110 [ 64.088739][ T6854] ? l2cap_sock_release+0x56/0x1d0 [ 64.093827][ T6854] ? lock_downgrade+0x820/0x820 [ 64.098760][ T6854] ? do_raw_read_unlock+0x70/0x70 [ 64.103770][ T6854] ? __sock_release+0x280/0x280 [ 64.108597][ T6854] l2cap_sock_release+0x63/0x1d0 [ 64.113526][ T6854] ? __sock_release+0x280/0x280 [ 64.118382][ T6854] __sock_release+0xcd/0x280 [ 64.122987][ T6854] sock_close+0x18/0x20 [ 64.127390][ T6854] __fput+0x33c/0x880 [ 64.131384][ T6854] task_work_run+0xdd/0x190 [ 64.136736][ T6854] do_exit+0xb7d/0x29f0 [ 64.140901][ T6854] ? lock_acquire+0x1f1/0xad0 [ 64.145566][ T6854] ? find_held_lock+0x2d/0x110 [ 64.150509][ T6854] ? mm_update_next_owner+0x7a0/0x7a0 [ 64.155875][ T6854] ? get_signal+0x332/0x1ee0 [ 64.160457][ T6854] ? lock_downgrade+0x820/0x820 [ 64.165297][ T6854] ? lock_is_held_type+0xb0/0xe0 [ 64.170518][ T6854] do_group_exit+0x125/0x310 [ 64.175218][ T6854] get_signal+0x40b/0x1ee0 [ 64.180646][ T6854] ? __local_bh_enable_ip+0x159/0x250 [ 64.186002][ T6854] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 64.191367][ T6854] do_signal+0x82/0x2520 [ 64.195708][ T6854] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 64.200887][ T6854] ? __sys_connect_file+0x4e/0x1a0 [ 64.205982][ T6854] ? copy_siginfo_to_user32+0xa0/0xa0 [ 64.211700][ T6854] ? __sys_connect_file+0x1a0/0x1a0 [ 64.216982][ T6854] ? lock_is_held_type+0xb0/0xe0 [ 64.221912][ T6854] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 64.228392][ T6854] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.234565][ T6854] __prepare_exit_to_usermode+0x156/0x1f0 [ 64.240355][ T6854] do_syscall_64+0x6c/0xe0 [ 64.245037][ T6854] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.251988][ T6854] RIP: 0033:0x446d69 [ 64.256374][ T6854] Code: Bad RIP value. [ 64.260765][ T6854] RSP: 002b:00007fff8cc26f18 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 64.269806][ T6854] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 64.277894][ T6854] RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004 [ 64.286406][ T6854] RBP: 00007fff8cc26f50 R08: 0000000000000000 R09: 00000000000000ff [ 64.294452][ T6854] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 64.302423][ T6854] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 64.312258][ T6854] Kernel Offset: disabled [ 64.316656][ T6854] Rebooting in 86400 seconds..