[ OK ] Reached target Basic System. Starting getty on tty2-tty6 if dbus and logind are not available... Starting OpenBSD Secure Shell server... Starting System Logging Service... [ OK ] Started Regular background program processing daemon. Starting Permit User Sessions... [ 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 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. syzkaller login: [ 64.341022][ T27] audit: type=1400 audit(1596250568.318:8): avc: denied { execmem } for pid=6829 comm="syz-executor385" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 64.354577][ T6830] IPVS: ftp: loaded support on port[0] = 21 executing program [ 67.494324][ T2710] Bluetooth: hci0: command 0x0409 tx timeout [ 69.573436][ T2710] Bluetooth: hci0: command 0x041b tx timeout [ 70.446849][ T6859] ------------[ cut here ]------------ [ 70.452729][ T6859] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: 0x0 [ 70.462722][ T6859] WARNING: CPU: 1 PID: 6859 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 70.472246][ T6859] Kernel panic - not syncing: panic_on_warn set ... [ 70.478983][ T6859] CPU: 1 PID: 6859 Comm: syz-executor385 Not tainted 5.8.0-rc7-syzkaller #0 [ 70.487765][ T6859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.497813][ T6859] Call Trace: [ 70.501098][ T6859] dump_stack+0x18f/0x20d [ 70.505441][ T6859] panic+0x2e3/0x75c [ 70.509376][ T6859] ? __warn_printk+0xf3/0xf3 [ 70.513958][ T6859] ? console_unlock+0x7f0/0xf30 [ 70.518819][ T6859] ? __warn.cold+0x5/0x45 [ 70.523310][ T6859] ? __warn+0xd6/0x1f2 [ 70.527503][ T6859] ? debug_print_object+0x160/0x250 [ 70.532689][ T6859] __warn.cold+0x20/0x45 [ 70.536931][ T6859] ? wake_up_klogd.part.0+0x8c/0xc0 [ 70.542268][ T6859] ? debug_print_object+0x160/0x250 [ 70.547455][ T6859] report_bug+0x1bd/0x210 [ 70.551776][ T6859] handle_bug+0x38/0x90 [ 70.555922][ T6859] exc_invalid_op+0x13/0x40 [ 70.560418][ T6859] asm_exc_invalid_op+0x12/0x20 [ 70.565345][ T6859] RIP: 0010:debug_print_object+0x160/0x250 [ 70.571135][ T6859] 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 [ 70.590723][ T6859] RSP: 0018:ffffc90001697578 EFLAGS: 00010082 [ 70.596772][ T6859] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 70.604729][ T6859] RDX: ffff8880a8c16340 RSI: ffffffff815d4ef7 RDI: fffff520002d2ea1 [ 70.612683][ T6859] RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ae720fcb [ 70.620637][ T6859] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89bcc540 [ 70.628594][ T6859] R13: ffffffff81630df0 R14: ffff888090d38200 R15: 1ffff920002d2eba [ 70.636577][ T6859] ? calc_wheel_index+0x230/0x230 [ 70.641589][ T6859] ? vprintk_func+0x97/0x1a6 [ 70.646263][ T6859] ? debug_print_object+0x160/0x250 [ 70.651449][ T6859] debug_object_assert_init+0x1f4/0x2e0 [ 70.656984][ T6859] ? find_held_lock+0x2d/0x110 [ 70.661732][ T6859] ? debug_object_init_on_stack+0x20/0x20 [ 70.667522][ T6859] ? __queue_work+0x653/0xff0 [ 70.672187][ T6859] ? lock_downgrade+0x820/0x820 [ 70.677112][ T6859] del_timer+0x6d/0x110 [ 70.681347][ T6859] ? detach_if_pending+0x4a0/0x4a0 [ 70.686444][ T6859] ? __queue_work+0x675/0xff0 [ 70.691111][ T6859] ? lockdep_hardirqs_off+0x66/0xa0 [ 70.696294][ T6859] ? trace_hardirqs_off+0x76/0x210 [ 70.701391][ T6859] cancel_delayed_work+0xe0/0x450 [ 70.706404][ T6859] ? mod_delayed_work_on+0x2e0/0x2e0 [ 70.711676][ T6859] ? lockdep_hardirqs_on+0x6a/0xe0 [ 70.716773][ T6859] ? queue_delayed_work_on+0x12f/0x210 [ 70.722216][ T6859] l2cap_chan_del+0x541/0x1300 [ 70.726966][ T6859] l2cap_chan_close+0x118/0xb10 [ 70.731807][ T6859] ? l2cap_retransmit_all+0x760/0x760 [ 70.737166][ T6859] ? __mutex_unlock_slowpath+0xe2/0x610 [ 70.742727][ T6859] ? rwlock_bug.part.0+0x90/0x90 [ 70.747652][ T6859] ? wait_for_completion+0x260/0x260 [ 70.752920][ T6859] ? __local_bh_enable_ip+0x159/0x250 [ 70.758279][ T6859] ? l2cap_sock_shutdown+0x2c4/0xe90 [ 70.763548][ T6859] ? trace_hardirqs_on+0x5f/0x220 [ 70.768558][ T6859] l2cap_sock_shutdown+0x3b8/0xe90 [ 70.773704][ T6859] ? lock_acquire+0x1f1/0xad0 [ 70.778365][ T6859] ? bt_sock_unlink+0x1d/0x1c0 [ 70.783121][ T6859] ? l2cap_sock_suspend_cb+0x80/0x80 [ 70.788401][ T6859] ? find_held_lock+0x2d/0x110 [ 70.793160][ T6859] ? l2cap_sock_release+0x56/0x1d0 [ 70.798263][ T6859] ? lock_downgrade+0x820/0x820 [ 70.803106][ T6859] ? do_raw_read_unlock+0x70/0x70 [ 70.808143][ T6859] ? __sock_release+0x280/0x280 [ 70.812979][ T6859] l2cap_sock_release+0x63/0x1d0 [ 70.817901][ T6859] ? __sock_release+0x280/0x280 [ 70.822769][ T6859] __sock_release+0xcd/0x280 [ 70.827348][ T6859] sock_close+0x18/0x20 [ 70.831489][ T6859] __fput+0x33c/0x880 [ 70.835459][ T6859] task_work_run+0xdd/0x190 [ 70.839975][ T6859] do_exit+0xb72/0x2a40 [ 70.844120][ T6859] ? lock_acquire+0x1f1/0xad0 [ 70.848803][ T6859] ? find_held_lock+0x2d/0x110 [ 70.853634][ T6859] ? mm_update_next_owner+0x7a0/0x7a0 [ 70.858997][ T6859] ? get_signal+0x332/0x1ee0 [ 70.863582][ T6859] ? lock_downgrade+0x820/0x820 [ 70.868425][ T6859] ? lock_is_held_type+0xb0/0xe0 [ 70.873353][ T6859] do_group_exit+0x125/0x310 [ 70.877934][ T6859] get_signal+0x40b/0x1ee0 [ 70.882341][ T6859] ? __local_bh_enable_ip+0x159/0x250 [ 70.887703][ T6859] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 70.892892][ T6859] ? selinux_netlbl_socket_connect+0x2e/0x40 [ 70.898861][ T6859] do_signal+0x82/0x2520 [ 70.903093][ T6859] ? l2cap_sock_recv_cb+0x1e0/0x1e0 [ 70.908285][ T6859] ? __sys_connect_file+0x4e/0x1a0 [ 70.913384][ T6859] ? copy_siginfo_to_user32+0xa0/0xa0 [ 70.918741][ T6859] ? __sys_connect_file+0x1a0/0x1a0 [ 70.923929][ T6859] ? vmacache_update+0xce/0x140 [ 70.928818][ T6859] ? __prepare_exit_to_usermode+0xcc/0x1f0 [ 70.934611][ T6859] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 70.940574][ T6859] __prepare_exit_to_usermode+0x156/0x1f0 [ 70.946279][ T6859] do_syscall_64+0x6c/0xe0 [ 70.950682][ T6859] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.956556][ T6859] RIP: 0033:0x446d69 [ 70.960427][ T6859] Code: Bad RIP value. [ 70.964472][ T6859] RSP: 002b:00007ffc8279f7a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 70.972864][ T6859] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446d69 [ 70.980923][ T6859] RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004 [ 70.988882][ T6859] RBP: 00007ffc8279f7e0 R08: 0000000000000000 R09: 00000000000000ff [ 70.996839][ T6859] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004 [ 71.004798][ T6859] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.014551][ T6859] Kernel Offset: disabled [ 71.018939][ T6859] Rebooting in 86400 seconds..