IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
------------[ cut here ]------------
IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready
ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:4941
WARNING: CPU: 0 PID: 29787 at lib/debugobjects.c:325 debug_print_object+0x168/0x250 lib/debugobjects.c:325
IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready
Kernel panic - not syncing: panic_on_warn set ...

hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
CPU: 0 PID: 29787 Comm: kworker/u4:9 Not tainted 4.19.91-syzkaller #0
hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
8021q: adding VLAN 0 to HW filter on device batadv0
kobject: 'vlan0' (00000000b5c4c4c5): kobject_add_internal: parent: 'mesh', set: '<NULL>'
 __warn.cold+0x20/0x53 kernel/panic.c:541
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
kobject: 'loop2' (00000000168dbb0d): kobject_uevent_env
kobject: 'loop2' (00000000168dbb0d): fill_kobj_path: path = '/devices/virtual/block/loop2'
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037
RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:325
Code: dd e0 63 ea 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd e0 63 ea 87 48 c7 c7 20 59 ea 87 e8 a6 46 dc fd <0f> 0b 83 05 ab 96 6a 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3
RSP: 0018:ffff888038047838 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8155bb16 RDI: ffffed1007008ef9
RBP: ffff888038047878 R08: ffff8880a3da6480 R09: ffffed1015d03ee3
R10: ffffed1015d03ee2 R11: ffff8880ae81f717 R12: 0000000000000001
R13: ffffffff88fa43a0 R14: ffffffff815b30d0 R15: ffff88809df0efe0
 __debug_check_no_obj_freed lib/debugobjects.c:785 [inline]
 debug_check_no_obj_freed+0x29f/0x464 lib/debugobjects.c:817
 kfree+0xbd/0x220 mm/slab.c:3821
 kvfree+0x61/0x70 mm/util.c:452
 netdev_freemem+0x4c/0x60 net/core/dev.c:8914
 netdev_release+0x86/0xb0 net/core/net-sysfs.c:1645
 device_release+0x7b/0x210 drivers/base/core.c:892
 kobject_cleanup lib/kobject.c:662 [inline]
 kobject_release lib/kobject.c:691 [inline]
 kref_put include/linux/kref.h:70 [inline]
 kobject_put.cold+0x289/0x2e6 lib/kobject.c:708
 netdev_run_todo+0x53b/0x7a0 net/core/dev.c:8819
 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117
 default_device_exit_batch+0x358/0x410 net/core/dev.c:9602
 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:156
 cleanup_net+0x404/0x960 net/core/net_namespace.c:553
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

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