======================================
| [   80.892707][  T362] ==================================================================
| [   80.893030][  T362] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:733)
| [   80.893294][  T362] Read of size 1 at addr ffff88800bdb46ac by task teamd/362
| [   80.893537][  T362]
[   80.893646][  T362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   80.893650][  T362] Call Trace:
[   80.893653][  T362]  <TASK>
[   80.893655][  T362]  dump_stack_lvl (lib/dump_stack.c:123)
[   80.893661][  T362]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[   80.893672][  T362]  ? kobject_put (lib/kobject.c:733)
[   80.893676][  T362]  print_report (mm/kasan/report.c:483)
[   80.893679][  T362]  ? kobject_put (lib/kobject.c:733)
[   80.893683][  T362]  ? kasan_addr_to_slab (./include/linux/mm.h:1245 mm/kasan/../slab.h:191 mm/kasan/common.c:47)
[   80.893686][  T362]  ? kobject_put (lib/kobject.c:733)
[   80.893689][  T362]  kasan_report (mm/kasan/report.c:597)
[   80.893693][  T362]  ? kobject_put (lib/kobject.c:733)
[   80.893698][  T362]  kobject_put (lib/kobject.c:733)
[   80.893702][  T362]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   80.893713][  T362]  ? dev_ingress_queue_create (net/core/dev.c:12299)
[   80.893716][  T362]  ? generic_xdp_install (net/core/dev.c:11630)
[   80.893719][  T362]  ? unregister_netdevice_many (net/core/dev.c:12241)
[   80.893722][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.893735][  T362]  rtnl_dellink (net/core/rtnetlink.c:3580)
[   80.893742][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   80.893761][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.893766][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.893772][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.893776][  T362]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   80.893778][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   80.893783][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   80.893786][  T362]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   80.893790][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   80.893793][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.893800][  T362]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   80.893805][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   80.893809][  T362]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   80.893815][  T362]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   80.893818][  T362]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[   80.893822][  T362]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   80.893826][  T362]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   80.893830][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.893835][  T362]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   80.893840][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   80.893843][  T362]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   80.893852][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   80.893855][  T362]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   80.893862][  T362]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   80.893865][  T362]  ? __copy_msghdr (net/socket.c:2556)
[   80.893875][  T362]  ___sys_sendmsg (net/socket.c:2686)
[   80.893878][  T362]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   80.893881][  T362]  ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125)
[   80.893890][  T362]  ? copy_msghdr_from_user (net/socket.c:2673)
[   80.893895][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.893899][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.893904][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.893908][  T362]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   80.893915][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   80.893922][  T362]  __sys_sendmsg (net/socket.c:2716)
[   80.893925][  T362]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   80.893929][  T362]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   80.893936][  T362]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   80.893940][  T362]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   80.893946][  T362]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   80.893955][  T362] RIP: 0033:0x7f26448361d7
[   80.893960][  T362] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   80.893963][  T362] RSP: 002b:00007fff345f7d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   80.893968][  T362] RAX: ffffffffffffffda RBX: 0000000018102320 RCX: 00007f26448361d7
[   80.893970][  T362] RDX: 0000000000000000 RSI: 00007fff345f7d40 RDI: 0000000000000005
[   80.893972][  T362] RBP: 0000000018102230 R08: 0000000000000003 R09: 0000000000000000
[   80.893974][  T362] R10: 0000000000020000 R11: 0000000000000246 R12: 000000001812a3c0
[   80.893976][  T362] R13: 00007fff345f7d40 R14: 0000000000000000 R15: 00007fff345f7ea0
| [   80.926288][  T362] refcount_t: underflow; use-after-free.
| [   80.927064][  T362] WARNING: CPU: 1 PID: 362 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3))
| [   80.927685][  T362] Modules linked in: act_mirred act_gact cls_flower bridge stp llc ip_gre gre sch_ingress 8021q vrf veth
| [   80.928424][  T362] Tainted: [B]=BAD_PAGE
[   80.928559][  T362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   80.928787][  T362] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3))
[   80.929027][  T362] Code: 7d 93 02 80 fb 01 0f 87 bb 99 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 a8 7d 93 02 01 90 48 c7 c7 60 8d 25 9a e8 32 bf 18 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 b0 63 a1 ff e9 ba fe ff ff
All code
========
   0:	7d 93                	jge    0xffffffffffffff95
   2:	02 80 fb 01 0f 87    	add    -0x78f0fe05(%rax),%al
   8:	bb 99 d9 fe 83       	mov    $0x83fed999,%ebx
   d:	e3 01                	jrcxz  0x10
   f:	0f 85 51 ff ff ff    	jne    0xffffffffffffff66
  15:	c6 05 a8 7d 93 02 01 	movb   $0x1,0x2937da8(%rip)        # 0x2937dc4
  1c:	90                   	nop
  1d:	48 c7 c7 60 8d 25 9a 	mov    $0xffffffff9a258d60,%rdi
  24:	e8 32 bf 18 ff       	call   0xffffffffff18bf5b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	e9 33 ff ff ff       	jmp    0xffffffffffffff66
  33:	48 89 df             	mov    %rbx,%rdi
  36:	e8 b0 63 a1 ff       	call   0xffffffffffa163eb
  3b:	e9 ba fe ff ff       	jmp    0xfffffffffffffefa

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	e9 33 ff ff ff       	jmp    0xffffffffffffff3c
   9:	48 89 df             	mov    %rbx,%rdi
   c:	e8 b0 63 a1 ff       	call   0xffffffffffa163c1
  11:	e9 ba fe ff ff       	jmp    0xfffffffffffffed0
[   80.929665][  T362] RSP: 0018:ffffc90000b371f0 EFLAGS: 00010286
[   80.929889][  T362] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   80.930165][  T362] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[   80.930442][  T362] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff357e134
[   80.930714][  T362] R10: 0000000000000003 R11: ffffc90000b36d80 R12: 0000000000000001
[   80.930976][  T362] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[   80.931235][  T362] FS:  00007f26446f5b80(0000) GS:ffff88809a272000(0000) knlGS:0000000000000000
[   80.931553][  T362] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   80.931798][  T362] CR2: 000055bc686d6dec CR3: 0000000004b77006 CR4: 0000000000772ef0
[   80.932052][  T362] PKRU: 55555554
[   80.932179][  T362] Call Trace:
[   80.932314][  T362]  <TASK>
[   80.932483][  T362]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   80.932701][  T362]  ? dev_ingress_queue_create (net/core/dev.c:12299)
[   80.932881][  T362]  ? generic_xdp_install (net/core/dev.c:11630)
[   80.933052][  T362]  ? unregister_netdevice_many (net/core/dev.c:12241)
[   80.933228][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.933471][  T362]  rtnl_dellink (net/core/rtnetlink.c:3580)
[   80.933658][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   80.933878][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.934050][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.934223][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.934475][  T362]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   80.934647][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   80.934825][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   80.935040][  T362]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   80.935212][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   80.935461][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.935646][  T362]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   80.935821][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   80.935991][  T362]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   80.936167][  T362]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   80.936339][  T362]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[   80.936577][  T362]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   80.936823][  T362]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   80.937093][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.937486][  T362]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   80.937735][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   80.938012][  T362]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   80.938290][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   80.938648][  T362]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   80.938932][  T362]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   80.939262][  T362]  ? __copy_msghdr (net/socket.c:2556)
[   80.939610][  T362]  ___sys_sendmsg (net/socket.c:2686)
[   80.939863][  T362]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   80.940145][  T362]  ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125)
[   80.940609][  T362]  ? copy_msghdr_from_user (net/socket.c:2673)
[   80.940894][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.941158][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   80.941579][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   80.941846][  T362]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   80.942118][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   80.942620][  T362]  __sys_sendmsg (net/socket.c:2716)
[   80.942908][  T362]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   80.943243][  T362]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   80.943635][  T362]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   80.943913][  T362]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   80.944198][  T362]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   80.944650][  T362] RIP: 0033:0x7f26448361d7
[   80.944941][  T362] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   80.946064][  T362] RSP: 002b:00007fff345f7d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   80.946618][  T362] RAX: ffffffffffffffda RBX: 0000000018102320 RCX: 00007f26448361d7
[   80.947042][  T362] RDX: 0000000000000000 RSI: 00007fff345f7d40 RDI: 0000000000000005
[   80.947589][  T362] RBP: 0000000018102230 R08: 0000000000000003 R09: 0000000000000000
[   80.948004][  T362] R10: 0000000000020000 R11: 0000000000000246 R12: 000000001812a3c0


Finger prints:
print_report:kasan_report:kobject_put:netdev_run_todo:rtnl_dellink
refcount_warn_saturate:netdev_run_todo:rtnl_dellink:rtnetlink_rcv_msg:netlink_rcv_skb