[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.90' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 56.257018][ T7193] IPVS: ftp: loaded support on port[0] = 21 [ 56.295777][ T7214] ------------[ cut here ]------------ [ 56.301573][ T7214] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 56.310796][ T7214] WARNING: CPU: 1 PID: 7214 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 56.320313][ T7214] Kernel panic - not syncing: panic_on_warn set ... [ 56.326896][ T7214] CPU: 1 PID: 7214 Comm: syz-executor526 Not tainted 5.6.0-rc7-syzkaller #0 [ 56.335607][ T7214] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.345652][ T7214] Call Trace: [ 56.348931][ T7214] dump_stack+0x188/0x20d [ 56.353289][ T7214] ? debug_print_object+0xc0/0x250 [ 56.358383][ T7214] panic+0x2e3/0x75c [ 56.362257][ T7214] ? add_taint.cold+0x16/0x16 [ 56.366924][ T7214] ? __probe_kernel_read+0x188/0x1d0 [ 56.372185][ T7214] ? __warn.cold+0x14/0x35 [ 56.376626][ T7214] ? __warn+0xd5/0x1c8 [ 56.380713][ T7214] ? debug_print_object+0x160/0x250 [ 56.385894][ T7214] __warn.cold+0x2f/0x35 [ 56.390161][ T7214] ? debug_print_object+0x160/0x250 [ 56.395341][ T7214] report_bug+0x27b/0x2f0 [ 56.399733][ T7214] do_error_trap+0x12b/0x220 [ 56.404302][ T7214] ? debug_print_object+0x160/0x250 [ 56.409492][ T7214] do_invalid_op+0x32/0x40 [ 56.413888][ T7214] ? debug_print_object+0x160/0x250 [ 56.419064][ T7214] invalid_op+0x23/0x30 [ 56.423208][ T7214] RIP: 0010:debug_print_object+0x160/0x250 [ 56.429000][ T7214] Code: dd 00 f2 51 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 00 f2 51 88 48 c7 c7 60 e7 51 88 e8 78 29 b1 fd <0f> 0b 83 05 8b f6 d2 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 56.448811][ T7214] RSP: 0018:ffffc90000f87178 EFLAGS: 00010282 [ 56.455294][ T7214] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 56.463290][ T7214] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff520001f0e21 [ 56.471242][ T7214] RBP: 0000000000000001 R08: ffff8880a26ee140 R09: ffffed1015ce6659 [ 56.479192][ T7214] R10: ffffed1015ce6658 R11: ffff8880ae7332c7 R12: ffffffff897acba0 [ 56.487237][ T7214] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920001f0e3c [ 56.495205][ T7214] ? vprintk_func+0x81/0x17e [ 56.499776][ T7214] ? debug_print_object+0x160/0x250 [ 56.505087][ T7214] ? lockdep_hardirqs_on+0x417/0x5d0 [ 56.510572][ T7214] debug_object_activate+0x346/0x470 [ 56.515848][ T7214] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 56.521646][ T7214] ? debug_object_init_on_stack+0x20/0x20 [ 56.527352][ T7214] ? find_held_lock+0x2d/0x110 [ 56.532110][ T7214] ? free_object+0x70/0x70 [ 56.536503][ T7214] ? lock_downgrade+0x7f0/0x7f0 [ 56.541331][ T7214] ? delayed_work_timer_fn+0x90/0x90 [ 56.546600][ T7214] call_rcu+0x2c/0x690 [ 56.550653][ T7214] queue_rcu_work+0x82/0xa0 [ 56.555136][ T7214] route4_change+0x19e8/0x2250 [ 56.559891][ T7214] ? route4_destroy+0x800/0x800 [ 56.564731][ T7214] ? wait_for_completion+0x3c0/0x3c0 [ 56.570002][ T7214] tc_new_tfilter+0xa59/0x20b0 [ 56.574750][ T7214] ? route4_destroy+0x800/0x800 [ 56.579590][ T7214] ? tc_del_tfilter+0x1430/0x1430 [ 56.584596][ T7214] ? __lock_acquire+0x80b/0x3ca0 [ 56.589539][ T7214] ? apparmor_capable+0x454/0x8a0 [ 56.594556][ T7214] ? rcu_read_lock_held+0x9c/0xb0 [ 56.599575][ T7214] ? tc_del_tfilter+0x1430/0x1430 [ 56.604640][ T7214] rtnetlink_rcv_msg+0x810/0xad0 [ 56.609561][ T7214] ? rtnl_bridge_getlink+0x880/0x880 [ 56.614833][ T7214] ? mark_held_locks+0xe0/0xe0 [ 56.619572][ T7214] ? netlink_deliver_tap+0x146/0xb50 [ 56.624838][ T7214] netlink_rcv_skb+0x15a/0x410 [ 56.629585][ T7214] ? rtnl_bridge_getlink+0x880/0x880 [ 56.634862][ T7214] ? netlink_ack+0xa80/0xa80 [ 56.639463][ T7214] netlink_unicast+0x537/0x740 [ 56.644228][ T7214] ? netlink_attachskb+0x810/0x810 [ 56.649327][ T7214] ? _copy_from_iter_full+0x25c/0x870 [ 56.654680][ T7214] ? __phys_addr_symbol+0x2c/0x70 [ 56.659685][ T7214] ? __check_object_size+0x171/0x437 [ 56.664996][ T7214] netlink_sendmsg+0x882/0xe10 [ 56.669746][ T7214] ? aa_af_perm+0x260/0x260 [ 56.674229][ T7214] ? netlink_unicast+0x740/0x740 [ 56.679154][ T7214] ? netlink_unicast+0x740/0x740 [ 56.684070][ T7214] sock_sendmsg+0xcf/0x120 [ 56.688484][ T7214] ____sys_sendmsg+0x6b9/0x7d0 [ 56.693226][ T7214] ? kernel_sendmsg+0x50/0x50 [ 56.697919][ T7214] ___sys_sendmsg+0x100/0x170 [ 56.702573][ T7214] ? sendmsg_copy_msghdr+0x70/0x70 [ 56.707670][ T7214] ? __fget_files+0x329/0x4f0 [ 56.712863][ T7214] ? ksys_dup3+0x3c0/0x3c0 [ 56.717265][ T7214] ? __fget_light+0x208/0x270 [ 56.721925][ T7214] __sys_sendmsg+0xec/0x1b0 [ 56.726406][ T7214] ? __sys_sendmsg_sock+0xb0/0xb0 [ 56.731408][ T7214] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.737376][ T7214] ? __x64_sys_futex+0x380/0x4f0 [ 56.742303][ T7214] ? trace_hardirqs_off_caller+0x55/0x230 [ 56.748005][ T7214] ? do_syscall_64+0x21/0x7d0 [ 56.752662][ T7214] do_syscall_64+0xf6/0x7d0 [ 56.757146][ T7214] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.763063][ T7214] RIP: 0033:0x4466c9 [ 56.766993][ T7214] Code: e8 1c ba 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.786727][ T7214] RSP: 002b:00007f3f68073d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.795120][ T7214] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 00000000004466c9 [ 56.803073][ T7214] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 56.811023][ T7214] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 56.818974][ T7214] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc6c [ 56.826933][ T7214] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 56.836340][ T7214] Kernel Offset: disabled [ 56.840718][ T7214] Rebooting in 86400 seconds..