[ OK ] Reached target Timers. Starting System Logging Service... Starting Permit User Sessions... [ OK ] Started Regular background program processing daemon. Starting OpenBSD Secure Shell server... Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. syzkaller login: [ 68.290435][ T27] audit: type=1400 audit(1596249357.223:8): avc: denied { execmem } for pid=6853 comm="syz-executor756" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 68.306495][ T6854] IPVS: ftp: loaded support on port[0] = 21 executing program [ 71.471253][ T12] Bluetooth: hci0: command 0x0409 tx timeout [ 73.550542][ T3841] Bluetooth: hci0: command 0x041b tx timeout [ 74.425795][ T6882] ------------[ cut here ]------------ [ 74.431484][ T6882] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 74.441363][ T6882] WARNING: CPU: 1 PID: 6882 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 74.450802][ T6882] Kernel panic - not syncing: panic_on_warn set ... [ 74.457405][ T6882] CPU: 1 PID: 6882 Comm: syz-executor756 Not tainted 5.8.0-rc7-syzkaller #0 [ 74.466066][ T6882] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.476115][ T6882] Call Trace: [ 74.479407][ T6882] dump_stack+0x18f/0x20d [ 74.483745][ T6882] panic+0x2e3/0x75c [ 74.487652][ T6882] ? __warn_printk+0xf3/0xf3 [ 74.492285][ T6882] ? console_unlock+0x7f0/0xf30 [ 74.497157][ T6882] ? __warn.cold+0x5/0x45 [ 74.501526][ T6882] ? __warn+0xd6/0x1f2 [ 74.505617][ T6882] ? debug_print_object+0x160/0x250 [ 74.510814][ T6882] __warn.cold+0x20/0x45 [ 74.515071][ T6882] ? wake_up_klogd.part.0+0x8c/0xc0 [ 74.520307][ T6882] ? debug_print_object+0x160/0x250 [ 74.525510][ T6882] report_bug+0x1bd/0x210 [ 74.529855][ T6882] handle_bug+0x38/0x90 [ 74.534029][ T6882] exc_invalid_op+0x13/0x40 [ 74.538538][ T6882] asm_exc_invalid_op+0x12/0x20 [ 74.543396][ T6882] RIP: 0010:debug_print_object+0x160/0x250 [ 74.549200][ T6882] Code: dd a0 9f 93 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd a0 9f 93 88 48 c7 c7 00 95 93 88 e8 22 a7 a9 fd <0f> 0b 83 05 8b 04 14 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 74.569053][ T6882] RSP: 0018:ffffc90001647578 EFLAGS: 00010082 [ 74.575095][ T6882] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 74.583107][ T6882] RDX: ffff888094d42340 RSI: ffffffff815d4ef7 RDI: fffff520002c8ea1 [ 74.591135][ T6882] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb [ 74.599083][ T6882] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540 [ 74.607054][ T6882] R13: ffffffff81630df0 R14: ffff8880a84e9200 R15: 1ffff920002c8eba [ 74.615034][ T6882] ? calc_wheel_index+0x230/0x230 [ 74.620060][ T6882] ? vprintk_func+0x97/0x1a6 [ 74.624635][ T6882] ? debug_print_object+0x160/0x250 [ 74.629812][ T6882] debug_object_assert_init+0x1f4/0x2e0 [ 74.635333][ T6882] ? find_held_lock+0x2d/0x110 [ 74.640089][ T6882] ? debug_object_init_on_stack+0x20/0x20 [ 74.645810][ T6882] ? __queue_work+0x653/0xff0 [ 74.650476][ T6882] ? lock_downgrade+0x820/0x820 [ 74.655306][ T6882] del_timer+0x6d/0x110 [ 74.659433][ T6882] ? detach_if_pending+0x4a0/0x4a0 [ 74.664531][ T6882] ? __queue_work+0x675/0xff0 [ 74.669186][ T6882] ? lockdep_hardirqs_off+0x66/0xa0 [ 74.674356][ T6882] ? trace_hardirqs_off+0x76/0x210 [ 74.679438][ T6882] cancel_delayed_work+0xe0/0x450 [ 74.684448][ T6882] ? mod_delayed_work_on+0x2e0/0x2e0 [ 74.689707][ T6882] ? lockdep_hardirqs_on+0x6a/0xe0 [ 74.694794][ T6882] ? queue_delayed_work_on+0x12f/0x210 [ 74.700240][ T6882] l2cap_chan_del+0x541/0x1300 [ 74.704980][ T6882] l2cap_chan_close+0x118/0xb10 [ 74.709813][ T6882] ? l2cap_retransmit_all+0x760/0x760 [ 74.715160][ T6882] ? __mutex_unlock_slowpath+0xe2/0x610 [ 74.720680][ T6882] ? rwlock_bug.part.0+0x90/0x90 [ 74.725607][ T6882] ? wait_for_completion+0x260/0x260 [ 74.730892][ T6882] ? __local_bh_enable_ip+0x159/0x250 [ 74.736260][ T6882] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 74.741561][ T6882] ? trace_hardirqs_on+0x5f/0x220 [ 74.746582][ T6882] l2cap_sock_shutdown+0x3b8/0xe90 [ 74.751735][ T6882] ? lock_acquire+0x1f1/0xad0 [ 74.756383][ T6882] ? bt_sock_unlink+0x1d/0x1c0 [ 74.761120][ T6882] ? l2cap_sock_suspend_cb+0x80/0x80 [ 74.766379][ T6882] ? find_held_lock+0x2d/0x110 [ 74.771116][ T6882] ? l2cap_sock_release+0x56/0x1d0 [ 74.776200][ T6882] ? lock_downgrade+0x820/0x820 [ 74.781023][ T6882] ? do_raw_read_unlock+0x70/0x70 [ 74.786029][ T6882] ? __sock_release+0x280/0x280 [ 74.790853][ T6882] l2cap_sock_release+0x63/0x1d0 [ 74.795763][ T6882] ? __sock_release+0x280/0x280 [ 74.800588][ T6882] __sock_release+0xcd/0x280 [ 74.805158][ T6882] sock_close+0x18/0x20 [ 74.809287][ T6882] __fput+0x33c/0x880 [ 74.813262][ T6882] task_work_run+0xdd/0x190 [ 74.817742][ T6882] do_exit+0xb72/0x2a40 [ 74.821886][ T6882] ? lock_acquire+0x1f1/0xad0 [ 74.826550][ T6882] ? find_held_lock+0x2d/0x110 [ 74.831303][ T6882] ? mm_update_next_owner+0x7a0/0x7a0 [ 74.836679][ T6882] ? get_signal+0x332/0x1ee0 [ 74.841246][ T6882] ? lock_downgrade+0x820/0x820 [ 74.846075][ T6882] ? lock_is_held_type+0xb0/0xe0 [ 74.851017][ T6882] do_group_exit+0x125/0x310 [ 74.855622][ T6882] get_signal+0x40b/0x1ee0 [ 74.860023][ T6882] ? __local_bh_enable_ip+0x159/0x250 [ 74.865376][ T6882] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 74.870565][ T6882] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 74.876537][ T6882] do_signal+0x82/0x2520 [ 74.880757][ T6882] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 74.885931][ T6882] ? __sys_connect_file+0x4e/0x1a0 [ 74.891019][ T6882] ? copy_siginfo_to_user32+0xa0/0xa0 [ 74.896404][ T6882] ? __sys_connect_file+0x1a0/0x1a0 [ 74.901594][ T6882] ? lock_is_held_type+0xb0/0xe0 [ 74.906527][ T6882] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 74.912325][ T6882] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.918281][ T6882] __prepare_exit_to_usermode+0x156/0x1f0 [ 74.923978][ T6882] do_syscall_64+0x6c/0xe0 [ 74.928369][ T6882] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 74.934235][ T6882] RIP: 0033:0x446d69 [ 74.938097][ T6882] Code: Bad RIP value. [ 74.942138][ T6882] RSP: 002b:00007fff86669168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 74.950544][ T6882] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 74.958493][ T6882] RDX: 000000000000000e RSI: 0000000020000000 RDI: 0000000000000004 [ 74.966455][ T6882] RBP: 00007fff866691a0 R08: 0000000000000000 R09: 00000000000000ff [ 74.974416][ T6882] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 74.982362][ T6882] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 74.991480][ T6882] Kernel Offset: disabled [ 74.995880][ T6882] Rebooting in 86400 seconds..