[ 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 '10.128.0.255' (ECDSA) to the list of known hosts. syzkaller login: [ 61.312475][ T6841] IPVS: ftp: loaded support on port[0] = 21 executing program [ 64.433788][ T2499] Bluetooth: hci0: command 0x0409 tx timeout [ 66.512844][ T2499] Bluetooth: hci0: command 0x041b tx timeout [ 67.402258][ T6870] ------------[ cut here ]------------ [ 67.408041][ T6870] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 67.417934][ T6870] WARNING: CPU: 1 PID: 6870 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 67.428065][ T6870] Kernel panic - not syncing: panic_on_warn set ... [ 67.434638][ T6870] CPU: 1 PID: 6870 Comm: syz-executor784 Not tainted 5.8.0-rc7-syzkaller #0 [ 67.444077][ T6870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.454535][ T6870] Call Trace: [ 67.457829][ T6870] dump_stack+0x18f/0x20d [ 67.462155][ T6870] panic+0x2e3/0x75c [ 67.466047][ T6870] ? __warn_printk+0xf3/0xf3 [ 67.470726][ T6870] ? console_unlock+0x7f0/0xf30 [ 67.475585][ T6870] ? __warn.cold+0x5/0x45 [ 67.479899][ T6870] ? __warn+0xd6/0x1f2 [ 67.483955][ T6870] ? debug_print_object+0x160/0x250 [ 67.489481][ T6870] __warn.cold+0x20/0x45 [ 67.493914][ T6870] ? wake_up_klogd.part.0+0x8c/0xc0 [ 67.499120][ T6870] ? debug_print_object+0x160/0x250 [ 67.504303][ T6870] report_bug+0x1bd/0x210 [ 67.508629][ T6870] handle_bug+0x38/0x90 [ 67.512777][ T6870] exc_invalid_op+0x13/0x40 [ 67.517272][ T6870] asm_exc_invalid_op+0x12/0x20 [ 67.522116][ T6870] RIP: 0010:debug_print_object+0x160/0x250 [ 67.527927][ T6870] 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 [ 67.547649][ T6870] RSP: 0018:ffffc90001677578 EFLAGS: 00010082 [ 67.554031][ T6870] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 67.562017][ T6870] RDX: ffff8880a7e744c0 RSI: ffffffff815d4ef7 RDI: fffff520002ceea1 [ 67.571147][ T6870] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb [ 67.579311][ T6870] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540 [ 67.587544][ T6870] R13: ffffffff81630df0 R14: ffff8880a20c8200 R15: 1ffff920002ceeba [ 67.595603][ T6870] ? calc_wheel_index+0x230/0x230 [ 67.600617][ T6870] ? vprintk_func+0x97/0x1a6 [ 67.605221][ T6870] ? debug_print_object+0x160/0x250 [ 67.610403][ T6870] debug_object_assert_init+0x1f4/0x2e0 [ 67.619597][ T6870] ? find_held_lock+0x2d/0x110 [ 67.624475][ T6870] ? debug_object_init_on_stack+0x20/0x20 [ 67.630183][ T6870] ? __queue_work+0x653/0xff0 [ 67.636163][ T6870] ? lock_downgrade+0x820/0x820 [ 67.641006][ T6870] del_timer+0x6d/0x110 [ 67.645145][ T6870] ? detach_if_pending+0x4a0/0x4a0 [ 67.650413][ T6870] ? __queue_work+0x675/0xff0 [ 67.655161][ T6870] ? lockdep_hardirqs_off+0x66/0xa0 [ 67.660358][ T6870] ? trace_hardirqs_off+0x76/0x210 [ 67.665486][ T6870] cancel_delayed_work+0xe0/0x450 [ 67.670501][ T6870] ? mod_delayed_work_on+0x2e0/0x2e0 [ 67.675827][ T6870] ? lockdep_hardirqs_on+0x6a/0xe0 [ 67.680920][ T6870] ? queue_delayed_work_on+0x12f/0x210 [ 67.686551][ T6870] l2cap_chan_del+0x541/0x1300 [ 67.691296][ T6870] l2cap_chan_close+0x118/0xb10 [ 67.696132][ T6870] ? l2cap_retransmit_all+0x760/0x760 [ 67.701643][ T6870] ? __mutex_unlock_slowpath+0xe2/0x610 [ 67.707991][ T6870] ? rwlock_bug.part.0+0x90/0x90 [ 67.712922][ T6870] ? wait_for_completion+0x260/0x260 [ 67.718189][ T6870] ? __local_bh_enable_ip+0x159/0x250 [ 67.723630][ T6870] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 67.728899][ T6870] ? trace_hardirqs_on+0x5f/0x220 [ 67.733924][ T6870] l2cap_sock_shutdown+0x3b8/0xe90 [ 67.739020][ T6870] ? lock_acquire+0x1f1/0xad0 [ 67.743695][ T6870] ? bt_sock_unlink+0x1d/0x1c0 [ 67.748440][ T6870] ? l2cap_sock_suspend_cb+0x80/0x80 [ 67.753959][ T6870] ? find_held_lock+0x2d/0x110 [ 67.758724][ T6870] ? l2cap_sock_release+0x56/0x1d0 [ 67.764003][ T6870] ? lock_downgrade+0x820/0x820 [ 67.768836][ T6870] ? do_raw_read_unlock+0x70/0x70 [ 67.773853][ T6870] ? __sock_release+0x280/0x280 [ 67.778693][ T6870] l2cap_sock_release+0x63/0x1d0 [ 67.783613][ T6870] ? __sock_release+0x280/0x280 [ 67.788531][ T6870] __sock_release+0xcd/0x280 [ 67.793189][ T6870] sock_close+0x18/0x20 [ 67.797341][ T6870] __fput+0x33c/0x880 [ 67.801357][ T6870] task_work_run+0xdd/0x190 [ 67.805933][ T6870] do_exit+0xb72/0x2a40 [ 67.810078][ T6870] ? lock_acquire+0x1f1/0xad0 [ 67.814767][ T6870] ? find_held_lock+0x2d/0x110 [ 67.819520][ T6870] ? mm_update_next_owner+0x7a0/0x7a0 [ 67.824979][ T6870] ? get_signal+0x332/0x1ee0 [ 67.829552][ T6870] ? lock_downgrade+0x820/0x820 [ 67.834404][ T6870] ? lock_is_held_type+0xb0/0xe0 [ 67.839370][ T6870] do_group_exit+0x125/0x310 [ 67.843942][ T6870] get_signal+0x40b/0x1ee0 [ 67.848352][ T6870] ? __local_bh_enable_ip+0x159/0x250 [ 67.853734][ T6870] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 67.858919][ T6870] do_signal+0x82/0x2520 [ 67.863167][ T6870] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 67.868349][ T6870] ? __sys_connect_file+0x4e/0x1a0 [ 67.873450][ T6870] ? copy_siginfo_to_user32+0xa0/0xa0 [ 67.878881][ T6870] ? __sys_connect_file+0x1a0/0x1a0 [ 67.884084][ T6870] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 67.890047][ T6870] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.896032][ T6870] __prepare_exit_to_usermode+0x156/0x1f0 [ 67.901986][ T6870] do_syscall_64+0x6c/0xe0 [ 67.906392][ T6870] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.912265][ T6870] RIP: 0033:0x446d39 [ 67.916138][ T6870] Code: Bad RIP value. [ 67.920197][ T6870] RSP: 002b:00007ffe3a733ed8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 67.928717][ T6870] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d39 [ 67.936707][ T6870] RDX: 0000000000000080 RSI: 0000000020000080 RDI: 0000000000000004 [ 67.944800][ T6870] RBP: 00007ffe3a733f10 R08: 0000000000000000 R09: 00000000000000ff [ 67.953029][ T6870] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 67.961239][ T6870] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 67.971054][ T6870] Kernel Offset: disabled [ 67.975484][ T6870] Rebooting in 86400 seconds..