[ OK ] Found device /dev/ttyS0. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. [ 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 '10.128.1.220' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.719096] FAULT_INJECTION: forcing a failure. [ 32.719096] name failslab, interval 1, probability 0, space 0, times 1 [ 32.730607] CPU: 0 PID: 8099 Comm: syz-executor823 Not tainted 4.19.211-syzkaller #0 [ 32.738474] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.747819] Call Trace: [ 32.750396] dump_stack+0x1fc/0x2ef [ 32.754010] should_fail.cold+0xa/0xf [ 32.757792] ? setup_fault_attr+0x200/0x200 [ 32.762095] ? mark_held_locks+0xa6/0xf0 [ 32.766134] ? _raw_spin_lock_irqsave+0x94/0xc0 [ 32.770807] __should_failslab+0x115/0x180 [ 32.775024] should_failslab+0x5/0x10 [ 32.778809] kmem_cache_alloc_trace+0x46/0x380 [ 32.783384] batadv_v_ogm_init+0xbb/0x430 [ 32.787530] ? batadv_v_ogm_packet_recv+0xd50/0xd50 [ 32.792539] ? __lockdep_init_map+0x100/0x5a0 [ 32.797038] batadv_v_mesh_init+0x11/0x20 [ 32.801174] batadv_mesh_init+0x448/0x690 [ 32.805305] batadv_softif_init_late+0xad7/0xd90 [ 32.810054] ? batadv_get_strings+0x40/0x40 [ 32.814385] ? batadv_get_strings+0x40/0x40 [ 32.818701] register_netdevice+0x2dc/0x10f0 [ 32.823092] ? unregister_netdev+0x20/0x20 [ 32.827321] ? rtnl_create_link+0x145/0xa40 [ 32.831635] rtnl_newlink+0x13b5/0x15c0 [ 32.835593] ? rtnl_getlink+0x620/0x620 [ 32.839552] ? __lock_acquire+0x6de/0x3ff0 [ 32.843780] ? mark_held_locks+0xf0/0xf0 [ 32.847824] ? get_reg+0x1f0/0x1f0 [ 32.851344] ? mark_held_locks+0xf0/0xf0 [ 32.855397] ? unwind_next_frame+0xeee/0x1400 [ 32.859882] ? mark_held_locks+0xf0/0xf0 [ 32.863931] ? __lock_acquire+0x6de/0x3ff0 [ 32.868152] ? get_reg+0x1f0/0x1f0 [ 32.871677] ? trace_hardirqs_off+0x64/0x200 [ 32.876073] ? mark_held_locks+0xf0/0xf0 [ 32.880125] ? unwind_next_frame+0xeee/0x1400 [ 32.884609] ? __save_stack_trace+0x72/0x190 [ 32.889083] ? deref_stack_reg+0x134/0x1d0 [ 32.893331] ? get_reg+0x176/0x1f0 [ 32.896852] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 32.902714] ? deref_stack_reg+0x1d0/0x1d0 [ 32.906939] ? __lock_acquire+0x6de/0x3ff0 [ 32.911158] ? __lock_acquire+0x6de/0x3ff0 [ 32.915374] ? mark_held_locks+0xf0/0xf0 [ 32.919415] ? get_reg+0x1f0/0x1f0 [ 32.922939] ? unwind_next_frame+0xeee/0x1400 [ 32.927518] ? mutex_trylock+0x1a0/0x1a0 [ 32.931560] ? rtnetlink_rcv_msg+0x3a0/0xb80 [ 32.935961] ? rtnl_getlink+0x620/0x620 [ 32.939916] rtnetlink_rcv_msg+0x453/0xb80 [ 32.944143] ? rtnl_calcit.isra.0+0x430/0x430 [ 32.948619] ? __netlink_lookup+0x3fc/0x730 [ 32.952921] ? lock_downgrade+0x720/0x720 [ 32.957085] ? check_preemption_disabled+0x41/0x280 [ 32.962091] netlink_rcv_skb+0x160/0x440 [ 32.966132] ? rtnl_calcit.isra.0+0x430/0x430 [ 32.970607] ? netlink_ack+0xae0/0xae0 [ 32.974491] netlink_unicast+0x4d5/0x690 [ 32.978546] ? netlink_sendskb+0x110/0x110 [ 32.982760] ? _copy_from_iter_full+0x229/0x7c0 [ 32.987410] ? __phys_addr_symbol+0x2c/0x70 [ 32.991723] ? __check_object_size+0x17b/0x3e0 [ 32.996300] netlink_sendmsg+0x6c3/0xc50 [ 33.000345] ? aa_af_perm+0x230/0x230 [ 33.004138] ? nlmsg_notify+0x1f0/0x1f0 [ 33.008091] ? kernel_recvmsg+0x220/0x220 [ 33.012225] ? nlmsg_notify+0x1f0/0x1f0 [ 33.016179] sock_sendmsg+0xc3/0x120 [ 33.019881] ___sys_sendmsg+0x7bb/0x8e0 [ 33.023836] ? check_preemption_disabled+0x41/0x280 [ 33.028833] ? copy_msghdr_from_user+0x440/0x440 [ 33.033583] ? proc_fail_nth_write+0x95/0x1d0 [ 33.038060] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 33.042973] ? mark_held_locks+0xf0/0xf0 [ 33.047015] ? __vfs_write+0xff/0x770 [ 33.050882] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 33.055791] ? common_file_perm+0x4e5/0x850 [ 33.060090] ? kernel_read+0x110/0x110 [ 33.063970] ? vm_insert_page+0x9c0/0x9c0 [ 33.068096] ? fsnotify+0x84e/0xe10 [ 33.071702] ? vfs_write+0x3d7/0x540 [ 33.075413] ? __fdget+0x1a0/0x230 [ 33.078935] __x64_sys_sendmsg+0x132/0x220 [ 33.083148] ? __sys_sendmsg+0x1b0/0x1b0 [ 33.087186] ? vfs_write+0x393/0x540 [ 33.090904] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 33.096247] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.101244] ? do_syscall_64+0x21/0x620 [ 33.105196] do_syscall_64+0xf9/0x620 [ 33.108980] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.114168] RIP: 0033:0x7f66beba61d9 [ 33.117864] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.136747] RSP: 002b:00007ffebd875ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 33.144452] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f66beba61d9 [ 33.151724] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 33.158979] RBP: 00007ffebd875f00 R08: 0000000000000001 R09: 0000000000000001 [ 33.166225] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 33.173483] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 33.193230] ------------[ cut here ]------------ [ 33.198004] ODEBUG: assert_init not available (active state 0) object type: timer_list hint: (null) [ 33.208385] WARNING: CPU: 0 PID: 8099 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 [ 33.217138] Kernel panic - not syncing: panic_on_warn set ... [ 33.217138] [ 33.224503] CPU: 0 PID: 8099 Comm: syz-executor823 Not tainted 4.19.211-syzkaller #0 [ 33.232379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.241730] Call Trace: [ 33.244310] dump_stack+0x1fc/0x2ef [ 33.247930] panic+0x26a/0x50e [ 33.251129] ? __warn_printk+0xf3/0xf3 [ 33.255034] ? debug_print_object+0x160/0x250 [ 33.259507] ? __probe_kernel_read+0x130/0x1b0 [ 33.264069] ? __warn.cold+0x5/0x5a [ 33.267814] ? __warn+0xe4/0x200 [ 33.271159] ? debug_print_object+0x160/0x250 [ 33.275633] __warn.cold+0x20/0x5a [ 33.279151] ? debug_print_object+0x160/0x250 [ 33.283640] report_bug+0x262/0x2b0 [ 33.287254] do_error_trap+0x1d7/0x310 [ 33.291134] ? math_error+0x310/0x310 [ 33.294914] ? irq_work_claim+0xa6/0xc0 [ 33.298870] ? irq_work_queue+0x29/0x80 [ 33.302825] ? error_entry+0x72/0xd0 [ 33.306520] ? trace_hardirqs_off_caller+0x2c/0x210 [ 33.311515] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.316341] invalid_op+0x14/0x20 [ 33.319775] RIP: 0010:debug_print_object+0x160/0x250 [ 33.324857] Code: dd 20 f1 b3 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 20 f1 b3 88 48 c7 c7 40 e5 b3 88 e8 65 92 7b 04 <0f> 0b 83 05 73 e6 af 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 33.343738] RSP: 0018:ffff88809d2aec08 EFLAGS: 00010086 [ 33.349086] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 [ 33.356355] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1013a55d73 [ 33.363603] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 33.370851] R10: 0000000000000005 R11: ffffffff8c66501b R12: ffffffff89f90a40 [ 33.378109] R13: ffffffff815313f0 R14: ffff8880b01b3418 R15: 1ffff11013a55d8c [ 33.385372] ? calc_wheel_index+0x230/0x230 [ 33.389682] ? vprintk_func+0x81/0x180 [ 33.393564] ? debug_print_object+0x160/0x250 [ 33.398040] debug_object_assert_init+0x1f0/0x2e0 [ 33.402868] ? save_trace+0xd6/0x290 [ 33.406561] ? debug_object_free+0x380/0x380 [ 33.410953] del_timer+0x6d/0x100 [ 33.414386] ? run_timer_softirq+0x670/0x670 [ 33.418778] ? trace_hardirqs_off+0x64/0x200 [ 33.423168] try_to_grab_pending+0x2b6/0x6f0 [ 33.427560] __cancel_work_timer+0xa6/0x590 [ 33.431873] ? mark_held_locks+0xa6/0xf0 [ 33.435913] ? try_to_grab_pending+0x6f0/0x6f0 [ 33.440474] ? batadv_mesh_free+0x6d/0x170 [ 33.444705] ? mark_held_locks+0xa6/0xf0 [ 33.448758] ? __local_bh_enable_ip+0x159/0x270 [ 33.453410] batadv_v_ogm_free+0x1f/0xd0 [ 33.457453] batadv_mesh_free+0x75/0x170 [ 33.461493] batadv_mesh_init+0x5b7/0x690 [ 33.465622] batadv_softif_init_late+0xad7/0xd90 [ 33.470369] ? batadv_get_strings+0x40/0x40 [ 33.474675] ? batadv_get_strings+0x40/0x40 [ 33.478982] register_netdevice+0x2dc/0x10f0 [ 33.483376] ? unregister_netdev+0x20/0x20 [ 33.487589] ? rtnl_create_link+0x145/0xa40 [ 33.491903] rtnl_newlink+0x13b5/0x15c0 [ 33.495867] ? rtnl_getlink+0x620/0x620 [ 33.499843] ? __lock_acquire+0x6de/0x3ff0 [ 33.504067] ? mark_held_locks+0xf0/0xf0 [ 33.508139] ? get_reg+0x1f0/0x1f0 [ 33.511661] ? mark_held_locks+0xf0/0xf0 [ 33.515802] ? unwind_next_frame+0xeee/0x1400 [ 33.520279] ? mark_held_locks+0xf0/0xf0 [ 33.524323] ? __lock_acquire+0x6de/0x3ff0 [ 33.528537] ? get_reg+0x1f0/0x1f0 [ 33.532059] ? trace_hardirqs_off+0x64/0x200 [ 33.536445] ? mark_held_locks+0xf0/0xf0 [ 33.540484] ? unwind_next_frame+0xeee/0x1400 [ 33.544970] ? __save_stack_trace+0x72/0x190 [ 33.549444] ? deref_stack_reg+0x134/0x1d0 [ 33.553663] ? get_reg+0x176/0x1f0 [ 33.557207] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 33.563071] ? deref_stack_reg+0x1d0/0x1d0 [ 33.567316] ? __lock_acquire+0x6de/0x3ff0 [ 33.571533] ? __lock_acquire+0x6de/0x3ff0 [ 33.575750] ? mark_held_locks+0xf0/0xf0 [ 33.579793] ? get_reg+0x1f0/0x1f0 [ 33.583314] ? unwind_next_frame+0xeee/0x1400 [ 33.587803] ? mutex_trylock+0x1a0/0x1a0 [ 33.591847] ? rtnetlink_rcv_msg+0x3a0/0xb80 [ 33.596246] ? rtnl_getlink+0x620/0x620 [ 33.600199] rtnetlink_rcv_msg+0x453/0xb80 [ 33.604417] ? rtnl_calcit.isra.0+0x430/0x430 [ 33.608904] ? __netlink_lookup+0x3fc/0x730 [ 33.613209] ? lock_downgrade+0x720/0x720 [ 33.617336] ? check_preemption_disabled+0x41/0x280 [ 33.622334] netlink_rcv_skb+0x160/0x440 [ 33.626376] ? rtnl_calcit.isra.0+0x430/0x430 [ 33.630862] ? netlink_ack+0xae0/0xae0 [ 33.634733] netlink_unicast+0x4d5/0x690 [ 33.638773] ? netlink_sendskb+0x110/0x110 [ 33.642990] ? _copy_from_iter_full+0x229/0x7c0 [ 33.647638] ? __phys_addr_symbol+0x2c/0x70 [ 33.651940] ? __check_object_size+0x17b/0x3e0 [ 33.656501] netlink_sendmsg+0x6c3/0xc50 [ 33.660546] ? aa_af_perm+0x230/0x230 [ 33.664340] ? nlmsg_notify+0x1f0/0x1f0 [ 33.668290] ? kernel_recvmsg+0x220/0x220 [ 33.672429] ? nlmsg_notify+0x1f0/0x1f0 [ 33.676408] sock_sendmsg+0xc3/0x120 [ 33.680102] ___sys_sendmsg+0x7bb/0x8e0 [ 33.684065] ? check_preemption_disabled+0x41/0x280 [ 33.689059] ? copy_msghdr_from_user+0x440/0x440 [ 33.693887] ? proc_fail_nth_write+0x95/0x1d0 [ 33.698362] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 33.703282] ? mark_held_locks+0xf0/0xf0 [ 33.707332] ? __vfs_write+0xff/0x770 [ 33.711114] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 33.716028] ? common_file_perm+0x4e5/0x850 [ 33.720352] ? kernel_read+0x110/0x110 [ 33.724218] ? vm_insert_page+0x9c0/0x9c0 [ 33.728431] ? fsnotify+0x84e/0xe10 [ 33.732035] ? vfs_write+0x3d7/0x540 [ 33.735730] ? __fdget+0x1a0/0x230 [ 33.739262] __x64_sys_sendmsg+0x132/0x220 [ 33.743488] ? __sys_sendmsg+0x1b0/0x1b0 [ 33.747525] ? vfs_write+0x393/0x540 [ 33.751223] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 33.756566] ? trace_hardirqs_off_caller+0x6e/0x210 [ 33.761569] ? do_syscall_64+0x21/0x620 [ 33.765522] do_syscall_64+0xf9/0x620 [ 33.769303] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 33.774481] RIP: 0033:0x7f66beba61d9 [ 33.778172] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 33.797052] RSP: 002b:00007ffebd875ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 33.804737] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f66beba61d9 [ 33.811984] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 [ 33.819248] RBP: 00007ffebd875f00 R08: 0000000000000001 R09: 0000000000000001 [ 33.826591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 33.833837] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 33.841584] Kernel Offset: disabled [ 33.845248] Rebooting in 86400 seconds..