[ 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 '10.128.0.224' (ECDSA) to the list of known hosts. syzkaller login: [ 60.406426][ T6850] IPVS: ftp: loaded support on port[0] = 21 executing program [ 63.534396][ T23] Bluetooth: hci0: command 0x0409 tx timeout [ 65.613835][ T2501] Bluetooth: hci0: command 0x041b tx timeout [ 66.472122][ T6879] ------------[ cut here ]------------ [ 66.477777][ T6879] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 66.487665][ T6879] WARNING: CPU: 1 PID: 6879 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 66.497137][ T6879] Kernel panic - not syncing: panic_on_warn set ... [ 66.503700][ T6879] CPU: 1 PID: 6879 Comm: syz-executor510 Not tainted 5.8.0-rc7-syzkaller #0 [ 66.512339][ T6879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.522491][ T6879] Call Trace: [ 66.525760][ T6879] dump_stack+0x18f/0x20d [ 66.530066][ T6879] panic+0x2e3/0x75c [ 66.533932][ T6879] ? __warn_printk+0xf3/0xf3 [ 66.538509][ T6879] ? console_unlock+0x7f0/0xf30 [ 66.543351][ T6879] ? __warn.cold+0x5/0x45 [ 66.547650][ T6879] ? __warn+0xd6/0x1f2 [ 66.551708][ T6879] ? debug_print_object+0x160/0x250 [ 66.556894][ T6879] __warn.cold+0x20/0x45 [ 66.561108][ T6879] ? wake_up_klogd.part.0+0x8c/0xc0 [ 66.566277][ T6879] ? debug_print_object+0x160/0x250 [ 66.571445][ T6879] report_bug+0x1bd/0x210 [ 66.575751][ T6879] handle_bug+0x38/0x90 [ 66.579881][ T6879] exc_invalid_op+0x13/0x40 [ 66.584359][ T6879] asm_exc_invalid_op+0x12/0x20 [ 66.589302][ T6879] RIP: 0010:debug_print_object+0x160/0x250 [ 66.595339][ T6879] 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 [ 66.614914][ T6879] RSP: 0018:ffffc900016b7578 EFLAGS: 00010082 [ 66.620947][ T6879] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 66.628887][ T6879] RDX: ffff888094cd6300 RSI: ffffffff815d4ef7 RDI: fffff520002d6ea1 [ 66.636829][ T6879] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb [ 66.644858][ T6879] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540 [ 66.652802][ T6879] R13: ffffffff81630df0 R14: ffff88808b5fd200 R15: 1ffff920002d6eba [ 66.660747][ T6879] ? calc_wheel_index+0x230/0x230 [ 66.665749][ T6879] ? vprintk_func+0x97/0x1a6 [ 66.670314][ T6879] ? debug_print_object+0x160/0x250 [ 66.675486][ T6879] debug_object_assert_init+0x1f4/0x2e0 [ 66.681003][ T6879] ? find_held_lock+0x2d/0x110 [ 66.685740][ T6879] ? debug_object_init_on_stack+0x20/0x20 [ 66.691429][ T6879] ? __queue_work+0x653/0xff0 [ 66.696093][ T6879] ? lock_downgrade+0x820/0x820 [ 66.700921][ T6879] del_timer+0x6d/0x110 [ 66.705077][ T6879] ? detach_if_pending+0x4a0/0x4a0 [ 66.710182][ T6879] ? __queue_work+0x675/0xff0 [ 66.714827][ T6879] ? lockdep_hardirqs_off+0x66/0xa0 [ 66.719995][ T6879] ? trace_hardirqs_off+0x76/0x210 [ 66.725093][ T6879] cancel_delayed_work+0xe0/0x450 [ 66.730215][ T6879] ? mod_delayed_work_on+0x2e0/0x2e0 [ 66.735472][ T6879] ? lockdep_hardirqs_on+0x6a/0xe0 [ 66.740655][ T6879] ? queue_delayed_work_on+0x12f/0x210 [ 66.746088][ T6879] l2cap_chan_del+0x541/0x1300 [ 66.750839][ T6879] l2cap_chan_close+0x118/0xb10 [ 66.755690][ T6879] ? l2cap_retransmit_all+0x760/0x760 [ 66.761123][ T6879] ? __mutex_unlock_slowpath+0xe2/0x610 [ 66.766655][ T6879] ? rwlock_bug.part.0+0x90/0x90 [ 66.771601][ T6879] ? wait_for_completion+0x260/0x260 [ 66.776853][ T6879] ? __local_bh_enable_ip+0x159/0x250 [ 66.782222][ T6879] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 66.787477][ T6879] ? trace_hardirqs_on+0x5f/0x220 [ 66.792504][ T6879] l2cap_sock_shutdown+0x3b8/0xe90 [ 66.797689][ T6879] ? lock_acquire+0x1f1/0xad0 [ 66.802359][ T6879] ? bt_sock_unlink+0x1d/0x1c0 [ 66.807095][ T6879] ? l2cap_sock_suspend_cb+0x80/0x80 [ 66.812349][ T6879] ? find_held_lock+0x2d/0x110 [ 66.817088][ T6879] ? l2cap_sock_release+0x56/0x1d0 [ 66.822395][ T6879] ? lock_downgrade+0x820/0x820 [ 66.827216][ T6879] ? do_raw_read_unlock+0x70/0x70 [ 66.832214][ T6879] ? __sock_release+0x280/0x280 [ 66.837034][ T6879] l2cap_sock_release+0x63/0x1d0 [ 66.841939][ T6879] ? __sock_release+0x280/0x280 [ 66.846759][ T6879] __sock_release+0xcd/0x280 [ 66.851318][ T6879] sock_close+0x18/0x20 [ 66.855447][ T6879] __fput+0x33c/0x880 [ 66.859426][ T6879] task_work_run+0xdd/0x190 [ 66.863898][ T6879] do_exit+0xb72/0x2a40 [ 66.868037][ T6879] ? lock_acquire+0x1f1/0xad0 [ 66.872685][ T6879] ? find_held_lock+0x2d/0x110 [ 66.877419][ T6879] ? mm_update_next_owner+0x7a0/0x7a0 [ 66.882761][ T6879] ? get_signal+0x332/0x1ee0 [ 66.887322][ T6879] ? lock_downgrade+0x820/0x820 [ 66.892146][ T6879] ? lock_is_held_type+0xb0/0xe0 [ 66.897058][ T6879] do_group_exit+0x125/0x310 [ 66.901633][ T6879] get_signal+0x40b/0x1ee0 [ 66.906026][ T6879] ? __local_bh_enable_ip+0x159/0x250 [ 66.911370][ T6879] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 66.916539][ T6879] do_signal+0x82/0x2520 [ 66.920752][ T6879] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 66.925924][ T6879] ? __sys_connect_file+0x4e/0x1a0 [ 66.931007][ T6879] ? copy_siginfo_to_user32+0xa0/0xa0 [ 66.936349][ T6879] ? __sys_connect_file+0x1a0/0x1a0 [ 66.941521][ T6879] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 66.947307][ T6879] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.953259][ T6879] __prepare_exit_to_usermode+0x156/0x1f0 [ 66.958968][ T6879] do_syscall_64+0x6c/0xe0 [ 66.963355][ T6879] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.969258][ T6879] RIP: 0033:0x446d89 [ 66.973116][ T6879] Code: Bad RIP value. [ 66.977158][ T6879] RSP: 002b:00007ffe6204ef18 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 66.985545][ T6879] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d89 [ 66.993487][ T6879] RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000004 [ 67.001429][ T6879] RBP: 00007ffe6204ef50 R08: 0000000000000000 R09: 00000000000000ff [ 67.009373][ T6879] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 67.017315][ T6879] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 67.026637][ T6879] Kernel Offset: disabled [ 67.031007][ T6879] Rebooting in 86400 seconds..