[ 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 '10.128.0.209' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 35.806346] ------------[ cut here ]------------ [ 35.811415] ODEBUG: activate active (active state 1) object type: rcu_head hint: (null) [ 35.820698] WARNING: CPU: 1 PID: 8430 at lib/debugobjects.c:325 debug_print_object+0x160/0x250 [ 35.829512] Kernel panic - not syncing: panic_on_warn set ... [ 35.829512] [ 35.836856] CPU: 1 PID: 8430 Comm: syz-executor494 Not tainted 4.19.205-syzkaller #0 [ 35.844713] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.854044] Call Trace: [ 35.856628] dump_stack+0x1fc/0x2ef [ 35.860251] panic+0x26a/0x50e [ 35.863423] ? __warn_printk+0xf3/0xf3 [ 35.867293] ? debug_print_object+0x160/0x250 [ 35.871768] ? __probe_kernel_read+0x130/0x1b0 [ 35.876329] ? __warn.cold+0x5/0x5a [ 35.879937] ? __warn+0xe4/0x200 [ 35.883282] ? debug_print_object+0x160/0x250 [ 35.887757] __warn.cold+0x20/0x5a [ 35.891275] ? debug_print_object+0x160/0x250 [ 35.895752] report_bug+0x262/0x2b0 [ 35.899360] do_error_trap+0x1d7/0x310 [ 35.903230] ? math_error+0x310/0x310 [ 35.907013] ? irq_work_claim+0xa6/0xc0 [ 35.910975] ? irq_work_queue+0x29/0x80 [ 35.914930] ? error_entry+0x72/0xd0 [ 35.918626] ? trace_hardirqs_off_caller+0x2c/0x210 [ 35.923626] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.928450] invalid_op+0x14/0x20 [ 35.931884] RIP: 0010:debug_print_object+0x160/0x250 [ 35.936963] Code: dd a0 f0 b3 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd a0 f0 b3 88 48 c7 c7 c0 e4 b3 88 e8 c0 5e 7b 04 <0f> 0b 83 05 83 e1 af 07 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 35.956360] RSP: 0018:ffff8880aefb7058 EFLAGS: 00010082 [ 35.961699] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 35.968967] RDX: 0000000000000000 RSI: ffffffff814e0d61 RDI: ffffed1015df6dfd [ 35.976223] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 35.983478] R10: 0000000000000005 R11: ffffffff8c66405b R12: ffffffff89f85ec0 [ 35.990894] R13: 0000000000000000 R14: 1ffff11015df6e16 R15: ffffffff89f85ec0 [ 35.998156] ? vprintk_func+0x81/0x180 [ 36.002025] ? debug_print_object+0x160/0x250 [ 36.006590] debug_object_activate+0x2f1/0x450 [ 36.011150] ? debug_object_assert_init+0x2e0/0x2e0 [ 36.016162] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.020727] ? __x64_sys_sendmsg+0x132/0x220 [ 36.025111] ? do_syscall_64+0xf9/0x620 [ 36.029062] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.034408] ? delayed_work_timer_fn+0x90/0x90 [ 36.039426] __call_rcu.constprop.0+0x31/0x7f0 [ 36.043990] queue_rcu_work+0x75/0x90 [ 36.047769] route4_destroy+0x4b2/0x7e0 [ 36.051725] ? route4_delete_filter_work+0x20/0x20 [ 36.056639] tcf_chain_flush+0x219/0x3e0 [ 36.060695] tcf_block_put_ext.part.0+0x404/0x6e0 [ 36.065529] ? tcf_chain_flush+0x3e0/0x3e0 [ 36.069835] ? rcu_is_watching+0x53/0xc0 [ 36.073882] tcf_block_put+0xad/0x100 [ 36.077686] ? tcf_block_put_ext+0x40/0x40 [ 36.081903] ? netlink_sendskb+0x110/0x110 [ 36.086117] ? drr_reset_qdisc+0x278/0x3f0 [ 36.090343] ? drr_delete_class+0x380/0x380 [ 36.094652] drr_destroy_qdisc+0x44/0x1d0 [ 36.098777] ? drr_delete_class+0x380/0x380 [ 36.103094] qdisc_destroy+0x180/0x790 [ 36.106960] ? qdisc_notify.isra.0+0x1cb/0x320 [ 36.111521] qdisc_graft+0xb61/0x1130 [ 36.115299] ? qdisc_create+0x802/0x1130 [ 36.119428] ? qdisc_class_hash_init+0x210/0x210 [ 36.124167] ? nla_parse+0x1b2/0x290 [ 36.127861] tc_modify_qdisc+0xd3d/0x1a80 [ 36.131993] ? tc_get_qdisc+0xb60/0xb60 [ 36.135943] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 36.140337] ? tc_get_qdisc+0xb60/0xb60 [ 36.144290] rtnetlink_rcv_msg+0x453/0xb80 [ 36.148526] ? rtnl_calcit.isra.0+0x430/0x430 [ 36.152999] ? __netlink_lookup+0x3fc/0x730 [ 36.157302] ? lock_downgrade+0x720/0x720 [ 36.161430] ? check_preemption_disabled+0x41/0x280 [ 36.166428] netlink_rcv_skb+0x160/0x440 [ 36.170557] ? rtnl_calcit.isra.0+0x430/0x430 [ 36.175030] ? netlink_ack+0xae0/0xae0 [ 36.178914] netlink_unicast+0x4d5/0x690 [ 36.182954] ? netlink_sendskb+0x110/0x110 [ 36.187529] ? _copy_from_iter_full+0x229/0x7c0 [ 36.192175] ? __phys_addr_symbol+0x2c/0x70 [ 36.196476] ? __check_object_size+0x17b/0x3e0 [ 36.201050] netlink_sendmsg+0x6bb/0xc40 [ 36.205105] ? aa_af_perm+0x230/0x230 [ 36.208898] ? nlmsg_notify+0x1a0/0x1a0 [ 36.212862] ? kernel_recvmsg+0x220/0x220 [ 36.216997] ? nlmsg_notify+0x1a0/0x1a0 [ 36.220951] sock_sendmsg+0xc3/0x120 [ 36.224643] ___sys_sendmsg+0x7bb/0x8e0 [ 36.228599] ? copy_msghdr_from_user+0x440/0x440 [ 36.233333] ? __fget+0x32f/0x510 [ 36.236783] ? lock_downgrade+0x720/0x720 [ 36.240912] ? check_preemption_disabled+0x41/0x280 [ 36.245907] ? check_preemption_disabled+0x41/0x280 [ 36.250904] ? __fget+0x356/0x510 [ 36.254336] ? do_dup2+0x450/0x450 [ 36.257853] ? __fd_install+0x1b4/0x610 [ 36.261844] ? __fdget+0x1d0/0x230 [ 36.265380] __x64_sys_sendmsg+0x132/0x220 [ 36.269594] ? __sys_sendmsg+0x1b0/0x1b0 [ 36.273636] ? __se_sys_futex+0x298/0x3b0 [ 36.277767] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.283123] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.288118] ? do_syscall_64+0x21/0x620 [ 36.292071] do_syscall_64+0xf9/0x620 [ 36.295865] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.301039] RIP: 0033:0x445ef9 [ 36.304212] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 36.323089] RSP: 002b:00007f286c57c308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 36.330772] RAX: ffffffffffffffda RBX: 00000000004cb468 RCX: 0000000000445ef9 [ 36.338019] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004 [ 36.345269] RBP: 00000000004cb460 R08: 0000000000000001 R09: 0000000000000000 [ 36.352516] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004cb46c [ 36.359762] R13: 000000000049b074 R14: 6d32cc5e8ead0600 R15: 0000000000022000 [ 37.455237] Shutting down cpus with NMI [ 37.460669] Kernel Offset: disabled [ 37.464432] Rebooting in 86400 seconds..