[ 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 '10.128.0.38' (ECDSA) to the list of known hosts. syzkaller login: [ 55.357593][ T6821] IPVS: ftp: loaded support on port[0] = 21 executing program [ 58.490265][ T2800] Bluetooth: hci0: command 0x0409 tx timeout [ 60.569797][ T2561] Bluetooth: hci0: command 0x041b tx timeout [ 61.458420][ T6851] ------------[ cut here ]------------ [ 61.464104][ T6851] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 61.474026][ T6851] WARNING: CPU: 1 PID: 6851 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 61.483456][ T6851] Kernel panic - not syncing: panic_on_warn set ... [ 61.490023][ T6851] CPU: 1 PID: 6851 Comm: syz-executor221 Not tainted 5.8.0-rc6-syzkaller #0 [ 61.498669][ T6851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.508720][ T6851] Call Trace: [ 61.512021][ T6851] dump_stack+0x18f/0x20d [ 61.516356][ T6851] panic+0x2e3/0x75c [ 61.520281][ T6851] ? __warn_printk+0xf3/0xf3 [ 61.524877][ T6851] ? console_unlock+0x7f0/0xf30 [ 61.529756][ T6851] ? __warn.cold+0x5/0x45 [ 61.534086][ T6851] ? __warn+0xd6/0x1f2 [ 61.538187][ T6851] ? debug_print_object+0x160/0x250 [ 61.543391][ T6851] __warn.cold+0x20/0x45 [ 61.547643][ T6851] ? wake_up_klogd.part.0+0x8c/0xc0 [ 61.552851][ T6851] ? debug_print_object+0x160/0x250 [ 61.558165][ T6851] report_bug+0x1bd/0x210 [ 61.562508][ T6851] handle_bug+0x38/0x90 [ 61.566666][ T6851] exc_invalid_op+0x13/0x40 [ 61.571175][ T6851] asm_exc_invalid_op+0x12/0x20 [ 61.576026][ T6851] RIP: 0010:debug_print_object+0x160/0x250 [ 61.581839][ T6851] 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 4b 3c 14 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 61.601446][ T6851] RSP: 0018:ffffc90001627578 EFLAGS: 00010082 [ 61.607485][ T6851] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 61.615431][ T6851] RDX: ffff8880a6192280 RSI: ffffffff815d3fe7 RDI: fffff520002c4ea1 [ 61.623393][ T6851] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb [ 61.631340][ T6851] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc240 [ 61.639292][ T6851] R13: ffffffff8162fee0 R14: ffff88809a4e9200 R15: 1ffff920002c4eba [ 61.648223][ T6851] ? calc_wheel_index+0x230/0x230 [ 61.653243][ T6851] ? vprintk_func+0x97/0x1a6 [ 61.657840][ T6851] ? debug_print_object+0x160/0x250 [ 61.663815][ T6851] debug_object_assert_init+0x1f4/0x2e0 [ 61.669351][ T6851] ? find_held_lock+0x2d/0x110 [ 61.674168][ T6851] ? debug_object_init_on_stack+0x20/0x20 [ 61.679872][ T6851] ? __queue_work+0x653/0xff0 [ 61.684530][ T6851] ? lock_downgrade+0x820/0x820 [ 61.689362][ T6851] del_timer+0x6d/0x110 [ 61.693511][ T6851] ? detach_if_pending+0x4a0/0x4a0 [ 61.698602][ T6851] ? __queue_work+0x675/0xff0 [ 61.703287][ T6851] ? lockdep_hardirqs_off+0x66/0xa0 [ 61.708460][ T6851] ? trace_hardirqs_off+0x76/0x210 [ 61.713587][ T6851] cancel_delayed_work+0xe0/0x450 [ 61.718601][ T6851] ? mod_delayed_work_on+0x2e0/0x2e0 [ 61.723868][ T6851] ? lockdep_hardirqs_on+0x6a/0xe0 [ 61.728954][ T6851] ? queue_delayed_work_on+0x12f/0x210 [ 61.734392][ T6851] l2cap_chan_del+0x541/0x1300 [ 61.739161][ T6851] l2cap_chan_close+0x118/0xb10 [ 61.744029][ T6851] ? l2cap_retransmit_all+0x760/0x760 [ 61.749391][ T6851] ? __mutex_unlock_slowpath+0xe2/0x610 [ 61.754923][ T6851] ? rwlock_bug.part.0+0x90/0x90 [ 61.759843][ T6851] ? wait_for_completion+0x260/0x260 [ 61.765102][ T6851] ? __local_bh_enable_ip+0x159/0x250 [ 61.770451][ T6851] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 61.775710][ T6851] ? trace_hardirqs_on+0x5f/0x220 [ 61.780715][ T6851] l2cap_sock_shutdown+0x3b8/0xe90 [ 61.785815][ T6851] ? lock_acquire+0x1f1/0xad0 [ 61.790517][ T6851] ? bt_sock_unlink+0x1d/0x1c0 [ 61.795273][ T6851] ? l2cap_sock_suspend_cb+0x80/0x80 [ 61.800534][ T6851] ? find_held_lock+0x2d/0x110 [ 61.805299][ T6851] ? l2cap_sock_release+0x56/0x1d0 [ 61.810392][ T6851] ? lock_downgrade+0x820/0x820 [ 61.815325][ T6851] ? do_raw_read_unlock+0x70/0x70 [ 61.820333][ T6851] ? __sock_release+0x280/0x280 [ 61.825157][ T6851] l2cap_sock_release+0x63/0x1d0 [ 61.830075][ T6851] ? __sock_release+0x280/0x280 [ 61.834960][ T6851] __sock_release+0xcd/0x280 [ 61.839554][ T6851] sock_close+0x18/0x20 [ 61.843688][ T6851] __fput+0x33c/0x880 [ 61.848022][ T6851] task_work_run+0xdd/0x190 [ 61.852518][ T6851] do_exit+0xb7d/0x29f0 [ 61.856653][ T6851] ? lock_acquire+0x1f1/0xad0 [ 61.861309][ T6851] ? find_held_lock+0x2d/0x110 [ 61.866049][ T6851] ? mm_update_next_owner+0x7a0/0x7a0 [ 61.871403][ T6851] ? get_signal+0x332/0x1ee0 [ 61.875974][ T6851] ? lock_downgrade+0x820/0x820 [ 61.880819][ T6851] ? lock_is_held_type+0xb0/0xe0 [ 61.885748][ T6851] do_group_exit+0x125/0x310 [ 61.890333][ T6851] get_signal+0x40b/0x1ee0 [ 61.894737][ T6851] ? __local_bh_enable_ip+0x159/0x250 [ 61.900087][ T6851] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 61.905275][ T6851] do_signal+0x82/0x2520 [ 61.909539][ T6851] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 61.914821][ T6851] ? __sys_connect_file+0x4e/0x1a0 [ 61.919911][ T6851] ? copy_siginfo_to_user32+0xa0/0xa0 [ 61.925270][ T6851] ? __sys_connect_file+0x1a0/0x1a0 [ 61.930467][ T6851] ? lock_is_held_type+0xb0/0xe0 [ 61.935387][ T6851] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 61.941171][ T6851] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.947127][ T6851] __prepare_exit_to_usermode+0x156/0x1f0 [ 61.952824][ T6851] do_syscall_64+0x6c/0xe0 [ 61.957232][ T6851] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.963116][ T6851] RIP: 0033:0x446d69 [ 61.966995][ T6851] Code: Bad RIP value. [ 61.971034][ T6851] RSP: 002b:00007fffaac91a98 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 61.979433][ T6851] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 61.987390][ T6851] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004 [ 61.995336][ T6851] RBP: 00007fffaac91ad0 R08: 0000000000000000 R09: 00000000000000ff [ 62.003283][ T6851] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 62.011242][ T6851] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 62.020454][ T6851] Kernel Offset: disabled [ 62.024848][ T6851] Rebooting in 86400 seconds..