------------[ cut here ]------------ IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:4941 IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready WARNING: CPU: 1 PID: 23 at lib/debugobjects.c:325 debug_print_object+0x168/0x250 lib/debugobjects.c:325 bridge0: port 1(bridge_slave_0) entered blocking state Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 23 Comm: kworker/u4:1 Not tainted 4.19.99-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 bridge0: port 1(bridge_slave_0) entered forwarding state Workqueue: netns cleanup_net IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready 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_CHANGE): bridge0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready bridge0: port 2(bridge_slave_1) entered blocking state __warn.cold+0x20/0x53 kernel/panic.c:541 bridge0: port 2(bridge_slave_1) entered forwarding state IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready 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 IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037 RIP: 0010:debug_print_object+0x168/0x250 lib/debugobjects.c:325 Code: dd 60 0a eb 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 60 0a eb 87 48 c7 c7 a0 ff ea 87 e8 d6 95 d4 fd <0f> 0b 83 05 0b 7c 63 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready RSP: 0018:ffff8880a996f830 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81557a66 RDI: ffffed101532def8 IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready RBP: ffff8880a996f870 R08: ffff8880a995a600 R09: fffffbfff11f11fd R10: fffffbfff11f11fc R11: ffffffff88f88fe3 R12: 0000000000000001 R13: ffffffff88fa0620 R14: ffffffff815af050 R15: ffff88807829a320 IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready __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 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready kvfree+0x61/0x70 mm/util.c:452 netdev_freemem+0x4c/0x60 net/core/dev.c:9065 netdev_release+0x86/0xb0 net/core/net-sysfs.c:1645 IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready device_release+0x7b/0x210 drivers/base/core.c:926 IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready kobject_cleanup lib/kobject.c:662 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put+0x193/0x290 lib/kobject.c:708 netdev_run_todo+0x53b/0x7a0 net/core/dev.c:8970 IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:117 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready default_device_exit_batch+0x358/0x410 net/core/dev.c:9755 IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:156 IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready cleanup_net+0x404/0x960 net/core/net_namespace.c:553 IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready process_one_work+0x989/0x1750 kernel/workqueue.c:2153 IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready 8021q: adding VLAN 0 to HW filter on device batadv0 IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_virt_wifi: link is not ready worker_thread+0x98/0xe40 kernel/workqueue.c:2296 IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready kthread+0x354/0x420 kernel/kthread.c:246 IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready ======================================================