[ 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 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. Debian GNU/Linux 9 syzkaller ttyS0 [ 69.618559][ T28] audit: type=1400 audit(1596242155.416:8): avc: denied { execmem } for pid=6841 comm="syz-executor039" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 69.633323][ T6842] IPVS: ftp: loaded support on port[0] = 21 executing program syzkaller login: [ 72.828045][ T2741] Bluetooth: hci0: command 0x0409 tx timeout [ 74.908097][ T2741] Bluetooth: hci0: command 0x041b tx timeout [ 75.779154][ T6870] ------------[ cut here ]------------ [ 75.786286][ T6870] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 75.796185][ T6870] WARNING: CPU: 0 PID: 6870 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 75.805624][ T6870] Kernel panic - not syncing: panic_on_warn set ... [ 75.812222][ T6870] CPU: 0 PID: 6870 Comm: syz-executor039 Not tainted 5.8.0-rc7-syzkaller #0 [ 75.820978][ T6870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.831072][ T6870] Call Trace: [ 75.834518][ T6870] dump_stack+0x18f/0x20d [ 75.838863][ T6870] panic+0x2e3/0x75c [ 75.842773][ T6870] ? __warn_printk+0xf3/0xf3 [ 75.847373][ T6870] ? console_unlock+0x7f0/0xf30 [ 75.852228][ T6870] ? __warn.cold+0x5/0x45 [ 75.856560][ T6870] ? __warn+0xd6/0x1f2 [ 75.860638][ T6870] ? debug_print_object+0x160/0x250 [ 75.865843][ T6870] __warn.cold+0x20/0x45 [ 75.870098][ T6870] ? wake_up_klogd.part.0+0x8c/0xc0 [ 75.875300][ T6870] ? debug_print_object+0x160/0x250 [ 75.880502][ T6870] report_bug+0x1bd/0x210 [ 75.884842][ T6870] handle_bug+0x38/0x90 [ 75.889032][ T6870] exc_invalid_op+0x13/0x40 [ 75.893541][ T6870] asm_exc_invalid_op+0x12/0x20 [ 75.902931][ T6870] RIP: 0010:debug_print_object+0x160/0x250 [ 75.908746][ T6870] 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 [ 75.928348][ T6870] RSP: 0018:ffffc900016f7578 EFLAGS: 00010082 [ 75.934409][ T6870] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 75.942396][ T6870] RDX: ffff8880a1c504c0 RSI: ffffffff815d4ef7 RDI: fffff520002deea1 [ 75.950363][ T6870] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae620fcb [ 75.958348][ T6870] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540 [ 75.966319][ T6870] R13: ffffffff81630df0 R14: ffff888094b61200 R15: 1ffff920002deeba [ 75.974285][ T6870] ? calc_wheel_index+0x230/0x230 [ 75.979314][ T6870] ? vprintk_func+0x97/0x1a6 [ 75.984938][ T6870] ? debug_print_object+0x160/0x250 [ 75.991016][ T6870] debug_object_assert_init+0x1f4/0x2e0 [ 75.996589][ T6870] ? find_held_lock+0x2d/0x110 [ 76.001540][ T6870] ? debug_object_init_on_stack+0x20/0x20 [ 76.008126][ T6870] ? __queue_work+0x653/0xff0 [ 76.013012][ T6870] ? lock_downgrade+0x820/0x820 [ 76.017861][ T6870] del_timer+0x6d/0x110 [ 76.022014][ T6870] ? detach_if_pending+0x4a0/0x4a0 [ 76.027114][ T6870] ? __queue_work+0x675/0xff0 [ 76.031780][ T6870] ? lockdep_hardirqs_off+0x66/0xa0 [ 76.036956][ T6870] ? trace_hardirqs_off+0x76/0x210 [ 76.042051][ T6870] cancel_delayed_work+0xe0/0x450 [ 76.047055][ T6870] ? mod_delayed_work_on+0x2e0/0x2e0 [ 76.052325][ T6870] ? lockdep_hardirqs_on+0x6a/0xe0 [ 76.057424][ T6870] ? queue_delayed_work_on+0x12f/0x210 [ 76.062876][ T6870] l2cap_chan_del+0x541/0x1300 [ 76.067627][ T6870] l2cap_chan_close+0x118/0xb10 [ 76.072457][ T6870] ? l2cap_retransmit_all+0x760/0x760 [ 76.077872][ T6870] ? __mutex_unlock_slowpath+0xe2/0x610 [ 76.083423][ T6870] ? rwlock_bug.part.0+0x90/0x90 [ 76.088345][ T6870] ? wait_for_completion+0x260/0x260 [ 76.093617][ T6870] ? __local_bh_enable_ip+0x159/0x250 [ 76.098987][ T6870] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 76.104349][ T6870] ? trace_hardirqs_on+0x5f/0x220 [ 76.109362][ T6870] l2cap_sock_shutdown+0x3b8/0xe90 [ 76.114460][ T6870] ? lock_acquire+0x1f1/0xad0 [ 76.119117][ T6870] ? bt_sock_unlink+0x1d/0x1c0 [ 76.123860][ T6870] ? l2cap_sock_suspend_cb+0x80/0x80 [ 76.129148][ T6870] ? find_held_lock+0x2d/0x110 [ 76.133896][ T6870] ? l2cap_sock_release+0x56/0x1d0 [ 76.139007][ T6870] ? lock_downgrade+0x820/0x820 [ 76.143852][ T6870] ? do_raw_read_unlock+0x70/0x70 [ 76.148896][ T6870] ? __sock_release+0x280/0x280 [ 76.153724][ T6870] l2cap_sock_release+0x63/0x1d0 [ 76.158644][ T6870] ? __sock_release+0x280/0x280 [ 76.163470][ T6870] __sock_release+0xcd/0x280 [ 76.168054][ T6870] sock_close+0x18/0x20 [ 76.172260][ T6870] __fput+0x33c/0x880 [ 76.176236][ T6870] task_work_run+0xdd/0x190 [ 76.180729][ T6870] do_exit+0xb72/0x2a40 [ 76.184870][ T6870] ? lock_acquire+0x1f1/0xad0 [ 76.189550][ T6870] ? find_held_lock+0x2d/0x110 [ 76.194306][ T6870] ? mm_update_next_owner+0x7a0/0x7a0 [ 76.199662][ T6870] ? get_signal+0x332/0x1ee0 [ 76.204238][ T6870] ? lock_downgrade+0x820/0x820 [ 76.209073][ T6870] ? lock_is_held_type+0xb0/0xe0 [ 76.213993][ T6870] do_group_exit+0x125/0x310 [ 76.218578][ T6870] get_signal+0x40b/0x1ee0 [ 76.222977][ T6870] ? __local_bh_enable_ip+0x159/0x250 [ 76.228342][ T6870] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 76.233535][ T6870] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 76.239512][ T6870] do_signal+0x82/0x2520 [ 76.243743][ T6870] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 76.248922][ T6870] ? __sys_connect_file+0x4e/0x1a0 [ 76.254076][ T6870] ? copy_siginfo_to_user32+0xa0/0xa0 [ 76.259433][ T6870] ? __sys_connect_file+0x1a0/0x1a0 [ 76.264636][ T6870] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 76.270422][ T6870] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 76.276399][ T6870] __prepare_exit_to_usermode+0x156/0x1f0 [ 76.282100][ T6870] do_syscall_64+0x6c/0xe0 [ 76.286494][ T6870] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 76.292379][ T6870] RIP: 0033:0x446d39 [ 76.296245][ T6870] Code: Bad RIP value. [ 76.300286][ T6870] RSP: 002b:00007ffe21920388 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 76.308681][ T6870] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d39 [ 76.316633][ T6870] RDX: 0000000000000080 RSI: 0000000020000080 RDI: 0000000000000004 [ 76.324581][ T6870] RBP: 00007ffe219203c0 R08: 0000000000000000 R09: 00000000000000ff [ 76.332531][ T6870] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 76.340491][ T6870] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 76.349894][ T6870] Kernel Offset: disabled [ 76.354283][ T6870] Rebooting in 86400 seconds..