[ 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 '10.128.0.159' (ECDSA) to the list of known hosts. syzkaller login: [ 33.742651] audit: type=1400 audit(1598137000.613:8): avc: denied { execmem } for pid=6368 comm="syz-executor038" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 34.812965] IPVS: ftp: loaded support on port[0] = 21 executing program [ 36.846516] Bluetooth: hci0 command 0x0409 tx timeout [ 38.924235] Bluetooth: hci0 command 0x041b tx timeout [ 39.865181] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) [ 39.875515] ------------[ cut here ]------------ [ 39.880271] WARNING: CPU: 1 PID: 6401 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb [ 39.889299] Kernel panic - not syncing: panic_on_warn set ... [ 39.889299] [ 39.896700] CPU: 1 PID: 6401 Comm: syz-executor038 Not tainted 4.14.194-syzkaller #0 [ 39.904607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.913949] Call Trace: [ 39.916521] dump_stack+0x1b2/0x283 [ 39.920159] panic+0x1f9/0x42d [ 39.923346] ? add_taint.cold+0x16/0x16 [ 39.927305] ? debug_print_object.cold+0xa7/0xdb [ 39.932041] ? debug_print_object.cold+0xa7/0xdb [ 39.936773] __warn.cold+0x20/0x4b [ 39.940286] ? ist_end_non_atomic+0x10/0x10 [ 39.944586] ? debug_print_object.cold+0xa7/0xdb [ 39.949317] report_bug+0x208/0x249 [ 39.952941] do_error_trap+0x195/0x2d0 [ 39.956805] ? math_error+0x2d0/0x2d0 [ 39.960587] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.965425] invalid_op+0x1b/0x40 [ 39.968854] RIP: 0010:debug_print_object.cold+0xa7/0xdb [ 39.974258] RSP: 0018:ffff888096fd7598 EFLAGS: 00010086 [ 39.979599] RAX: 0000000000000061 RBX: 0000000000000005 RCX: 0000000000000000 [ 39.986844] RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1012dfaea9 [ 39.994104] RBP: ffffffff86abc580 R08: 0000000000000061 R09: 0000000000000003 [ 40.001360] R10: 0000000000000000 R11: ffff8880967f8280 R12: 0000000000000000 [ 40.008604] R13: 0000000000000000 R14: ffff888096a65830 R15: 1ffff11012dfaebc [ 40.015910] ? debug_print_object.cold+0xa7/0xdb [ 40.021106] debug_object_assert_init+0x1d3/0x2d0 [ 40.025925] ? debug_object_active_state+0x330/0x330 [ 40.031001] ? __queue_work+0x517/0xf70 [ 40.034949] ? lock_downgrade+0x740/0x740 [ 40.039081] del_timer+0x5d/0xe0 [ 40.042433] ? process_timeout+0x20/0x20 [ 40.046480] ? _raw_spin_unlock+0x29/0x40 [ 40.050611] ? __queue_work+0x517/0xf70 [ 40.054561] try_to_grab_pending+0x243/0x610 [ 40.058955] __cancel_work+0x68/0x240 [ 40.062740] ? try_to_grab_pending+0x610/0x610 [ 40.067297] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 40.072288] ? queue_delayed_work_on+0xfc/0x1d0 [ 40.076944] l2cap_chan_del+0x465/0x800 [ 40.080894] l2cap_chan_close+0xd5/0x770 [ 40.084929] ? __set_monitor_timer+0x110/0x110 [ 40.089495] ? wait_for_completion_io+0x10/0x10 [ 40.094149] ? __local_bh_enable_ip+0xc1/0x170 [ 40.098707] l2cap_sock_shutdown+0x74e/0xa60 [ 40.103102] ? do_exit+0xa03/0x27f0 [ 40.106701] ? do_group_exit+0x100/0x2e0 [ 40.110737] ? get_signal+0x38d/0x1ca0 [ 40.114612] ? l2cap_skb_msg_name+0x120/0x120 [ 40.119093] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 40.124435] ? trace_hardirqs_on+0x10/0x10 [ 40.128645] ? l2cap_sock_release+0x56/0x180 [ 40.133031] ? lock_downgrade+0x740/0x740 [ 40.137159] l2cap_sock_release+0x63/0x180 [ 40.141373] __sock_release+0xcd/0x2b0 [ 40.145235] ? __sock_release+0x2b0/0x2b0 [ 40.149367] sock_close+0x15/0x20 [ 40.152820] __fput+0x25f/0x7a0 [ 40.156078] task_work_run+0x11f/0x190 [ 40.159951] do_exit+0xa08/0x27f0 [ 40.163392] ? trace_hardirqs_on+0x10/0x10 [ 40.167603] ? mm_update_next_owner+0x5b0/0x5b0 [ 40.172246] ? get_signal+0x323/0x1ca0 [ 40.176129] ? lock_acquire+0x170/0x3f0 [ 40.180091] ? lock_downgrade+0x740/0x740 [ 40.184226] do_group_exit+0x100/0x2e0 [ 40.188091] get_signal+0x38d/0x1ca0 [ 40.191794] do_signal+0x7c/0x1550 [ 40.195318] ? __local_bh_enable_ip+0xc1/0x170 [ 40.199880] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 40.204883] ? l2cap_sock_connect+0x2f9/0x4f0 [ 40.209367] ? __local_bh_enable_ip+0xc1/0x170 [ 40.213925] ? setup_sigcontext+0x820/0x820 [ 40.218219] ? l2cap_sock_accept+0x440/0x440 [ 40.222616] ? security_socket_connect+0x83/0xb0 [ 40.227361] ? l2cap_sock_accept+0x440/0x440 [ 40.231747] ? SyS_connect+0xf6/0x240 [ 40.235549] ? SyS_accept+0x30/0x30 [ 40.239169] ? exit_to_usermode_loop+0x41/0x200 [ 40.243815] exit_to_usermode_loop+0x160/0x200 [ 40.248384] do_syscall_64+0x4a3/0x640 [ 40.252260] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 40.257424] RIP: 0033:0x446d99 [ 40.260598] RSP: 002b:00007ffcd3cabe28 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 40.268280] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d99 [ 40.275534] RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000004 [ 40.282778] RBP: 0000000000000003 R08: 00000000000000ff R09: 00000000000000ff [ 40.290024] R10: 0000000000000004 R11: 0000000000000246 R12: 000000000260b850 [ 40.297267] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 40.306073] Kernel Offset: disabled [ 40.309756] Rebooting in 86400 seconds..