Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 97.647209][ T9514] IPVS: ftp: loaded support on port[0] = 21 [ 97.683309][ T9516] ------------[ cut here ]------------ [ 97.688916][ T9516] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 97.697947][ T9516] WARNING: CPU: 0 PID: 9516 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 97.707427][ T9516] Kernel panic - not syncing: panic_on_warn set ... [ 97.714007][ T9516] CPU: 0 PID: 9516 Comm: syz-executor964 Not tainted 5.6.0-rc6-syzkaller #0 [ 97.722668][ T9516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.732704][ T9516] Call Trace: [ 97.735982][ T9516] dump_stack+0x188/0x20d [ 97.740295][ T9516] ? debug_print_object+0x120/0x250 [ 97.745474][ T9516] panic+0x2e3/0x75c [ 97.749363][ T9516] ? add_taint.cold+0x16/0x16 [ 97.754036][ T9516] ? __probe_kernel_read+0x188/0x1d0 [ 97.759328][ T9516] ? __warn.cold+0x14/0x35 [ 97.763725][ T9516] ? __warn+0xd5/0x1c8 [ 97.767776][ T9516] ? debug_print_object+0x160/0x250 [ 97.772982][ T9516] __warn.cold+0x2f/0x35 [ 97.777217][ T9516] ? debug_print_object+0x160/0x250 [ 97.782419][ T9516] report_bug+0x27b/0x2f0 [ 97.786804][ T9516] do_error_trap+0x12b/0x220 [ 97.791426][ T9516] ? debug_print_object+0x160/0x250 [ 97.796668][ T9516] do_invalid_op+0x32/0x40 [ 97.801105][ T9516] ? debug_print_object+0x160/0x250 [ 97.806345][ T9516] invalid_op+0x23/0x30 [ 97.810503][ T9516] RIP: 0010:debug_print_object+0x160/0x250 [ 97.816312][ T9516] Code: dd c0 f3 51 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd c0 f3 51 88 48 c7 c7 20 e9 51 88 e8 d8 ca b1 fd <0f> 0b 83 05 ab 98 d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 97.835936][ T9516] RSP: 0018:ffffc90002047168 EFLAGS: 00010286 [ 97.841987][ T9516] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 97.849939][ T9516] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000408e1f [ 97.857977][ T9516] RBP: 0000000000000001 R08: ffff8880a1c180c0 R09: fffffbfff180e578 [ 97.866086][ T9516] R10: fffffbfff180e577 R11: ffffffff8c072bbf R12: ffffffff897acba0 [ 97.874058][ T9516] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000408e3a [ 97.882037][ T9516] ? vprintk_func+0x81/0x17e [ 97.886724][ T9516] ? debug_print_object+0x160/0x250 [ 97.891931][ T9516] ? lockdep_hardirqs_on+0x417/0x5d0 [ 97.897292][ T9516] debug_object_activate+0x346/0x470 [ 97.902565][ T9516] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 97.908362][ T9516] ? debug_object_init_on_stack+0x20/0x20 [ 97.914168][ T9516] ? find_held_lock+0x2d/0x110 [ 97.918926][ T9516] ? free_object+0x70/0x70 [ 97.923334][ T9516] ? lock_downgrade+0x7f0/0x7f0 [ 97.928190][ T9516] ? delayed_work_timer_fn+0x90/0x90 [ 97.933513][ T9516] call_rcu+0x2c/0x690 [ 97.937617][ T9516] queue_rcu_work+0x82/0xa0 [ 97.942117][ T9516] route4_change+0x19e8/0x2250 [ 97.946872][ T9516] ? route4_destroy+0x800/0x800 [ 97.951738][ T9516] ? wait_for_completion+0x3c0/0x3c0 [ 97.957067][ T9516] tc_new_tfilter+0xa59/0x20b0 [ 97.961828][ T9516] ? route4_destroy+0x800/0x800 [ 97.966682][ T9516] ? tc_del_tfilter+0x1430/0x1430 [ 97.971715][ T9516] ? __lock_acquire+0x80b/0x3ca0 [ 97.976645][ T9516] ? apparmor_capable+0x454/0x8a0 [ 97.981675][ T9516] ? rcu_read_lock_held+0x9c/0xb0 [ 97.986713][ T9516] ? tc_del_tfilter+0x1430/0x1430 [ 97.991727][ T9516] rtnetlink_rcv_msg+0x810/0xad0 [ 97.996652][ T9516] ? rtnl_bridge_getlink+0x880/0x880 [ 98.001926][ T9516] ? mark_held_locks+0xe0/0xe0 [ 98.006673][ T9516] ? netlink_deliver_tap+0x146/0xb50 [ 98.011938][ T9516] netlink_rcv_skb+0x15a/0x410 [ 98.016689][ T9516] ? rtnl_bridge_getlink+0x880/0x880 [ 98.021964][ T9516] ? netlink_ack+0xa80/0xa80 [ 98.026547][ T9516] netlink_unicast+0x537/0x740 [ 98.031299][ T9516] ? netlink_attachskb+0x810/0x810 [ 98.036390][ T9516] ? _copy_from_iter_full+0x25c/0x870 [ 98.041740][ T9516] ? __phys_addr_symbol+0x2c/0x70 [ 98.046752][ T9516] ? __check_object_size+0x171/0x437 [ 98.052020][ T9516] netlink_sendmsg+0x882/0xe10 [ 98.056768][ T9516] ? aa_af_perm+0x260/0x260 [ 98.061251][ T9516] ? netlink_unicast+0x740/0x740 [ 98.066173][ T9516] ? netlink_unicast+0x740/0x740 [ 98.071087][ T9516] sock_sendmsg+0xcf/0x120 [ 98.075484][ T9516] ____sys_sendmsg+0x6b9/0x7d0 [ 98.080232][ T9516] ? kernel_sendmsg+0x50/0x50 [ 98.084908][ T9516] ___sys_sendmsg+0x100/0x170 [ 98.089562][ T9516] ? sendmsg_copy_msghdr+0x70/0x70 [ 98.094691][ T9516] ? __fget_files+0x329/0x4f0 [ 98.099350][ T9516] ? ksys_dup3+0x3c0/0x3c0 [ 98.103765][ T9516] ? __fget_light+0x208/0x270 [ 98.108429][ T9516] __sys_sendmsg+0xec/0x1b0 [ 98.112913][ T9516] ? __sys_sendmsg_sock+0xb0/0xb0 [ 98.117916][ T9516] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 98.123889][ T9516] ? __ia32_sys_futex_time32+0x32a/0x494 [ 98.129513][ T9516] ? fpregs_mark_activate+0x320/0x320 [ 98.134888][ T9516] ? trace_hardirqs_off_caller+0x55/0x230 [ 98.140595][ T9516] ? do_fast_syscall_32+0xcc/0xe8f [ 98.145686][ T9516] do_fast_syscall_32+0x270/0xe8f [ 98.150694][ T9516] entry_SYSENTER_compat+0x70/0x7f [ 98.157368][ T9516] Kernel Offset: disabled [ 98.161780][ T9516] Rebooting in 86400 seconds..