======================================
| [   89.427316][  T362] ==================================================================
| [   89.427670][  T362] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:733)
| [   89.428001][  T362] Read of size 1 at addr ffff888007bb16ac by task teamd/362
| [   89.428342][  T362]
[   89.428461][  T362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   89.428466][  T362] Call Trace:
[   89.428469][  T362]  <TASK>
[   89.428471][  T362]  dump_stack_lvl (lib/dump_stack.c:123)
[   89.428482][  T362]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[   89.428501][  T362]  ? kobject_put (lib/kobject.c:733)
[   89.428506][  T362]  print_report (mm/kasan/report.c:483)
[   89.428511][  T362]  ? kobject_put (lib/kobject.c:733)
[   89.428516][  T362]  ? kasan_addr_to_slab (./include/linux/mm.h:1245 mm/kasan/../slab.h:191 mm/kasan/common.c:47)
[   89.428520][  T362]  ? kobject_put (lib/kobject.c:733)
[   89.428523][  T362]  kasan_report (mm/kasan/report.c:597)
[   89.428527][  T362]  ? kobject_put (lib/kobject.c:733)
[   89.428535][  T362]  kobject_put (lib/kobject.c:733)
[   89.428538][  T362]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   89.428546][  T362]  ? dev_ingress_queue_create (net/core/dev.c:12299)
[   89.428550][  T362]  ? generic_xdp_install (net/core/dev.c:11630)
[   89.428553][  T362]  ? unregister_netdevice_many (net/core/dev.c:12241)
[   89.428556][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.428571][  T362]  rtnl_dellink (net/core/rtnetlink.c:3580)
[   89.428577][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   89.428595][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.428600][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.428606][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.428609][  T362]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   89.428612][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   89.428616][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   89.428619][  T362]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   89.428623][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   89.428626][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.428633][  T362]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   89.428639][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   89.428643][  T362]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   89.428649][  T362]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   89.428652][  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)
[   89.428656][  T362]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   89.428660][  T362]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   89.428664][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.428669][  T362]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   89.428674][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   89.428677][  T362]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   89.428689][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   89.428693][  T362]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   89.428703][  T362]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   89.428706][  T362]  ? __copy_msghdr (net/socket.c:2556)
[   89.428713][  T362]  ___sys_sendmsg (net/socket.c:2686)
[   89.428716][  T362]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   89.428719][  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)
[   89.428731][  T362]  ? copy_msghdr_from_user (net/socket.c:2673)
[   89.428736][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.428741][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.428746][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.428750][  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)
[   89.428763][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   89.428774][  T362]  __sys_sendmsg (net/socket.c:2716)
[   89.428779][  T362]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   89.428784][  T362]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   89.428794][  T362]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   89.428798][  T362]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   89.428808][  T362]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   89.428816][  T362] RIP: 0033:0x7f8598df31d7
[   89.428824][  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)
[   89.428829][  T362] RSP: 002b:00007ffd47567968 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   89.428836][  T362] RAX: ffffffffffffffda RBX: 0000000011b95320 RCX: 00007f8598df31d7
[   89.428838][  T362] RDX: 0000000000000000 RSI: 00007ffd475679a0 RDI: 0000000000000005
[   89.428840][  T362] RBP: 0000000011b95230 R08: 0000000000000003 R09: 0000000000000000
[   89.428842][  T362] R10: 0000000000001000 R11: 0000000000000246 R12: 0000000011bba830
[   89.428844][  T362] R13: 00007ffd475679a0 R14: 0000000000000000 R15: 00007ffd47567b00
| [   89.460448][  T362] refcount_t: underflow; use-after-free.
| [   89.461044][  T362] WARNING: CPU: 3 PID: 362 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3))
| [   89.461392][  T362] Modules linked in: act_mirred act_gact cls_flower bridge stp llc ip_gre gre sch_ingress 8021q vrf veth
| [   89.462171][  T362] Tainted: [B]=BAD_PAGE
[   89.462357][  T362] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   89.462614][  T362] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3))
[   89.462855][  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 97 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 97 	mov    $0xffffffff97258d60,%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
[   89.463551][  T362] RSP: 0018:ffffc900005e71f0 EFLAGS: 00010286
[   89.463787][  T362] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   89.464046][  T362] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[   89.464350][  T362] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2f7e134
[   89.464790][  T362] R10: 0000000000000003 R11: ffffc900005e6d80 R12: 0000000000000001
[   89.465067][  T362] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[   89.465357][  T362] FS:  00007f8598cb2b80(0000) GS:ffff888097772000(0000) knlGS:0000000000000000
[   89.465749][  T362] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.465973][  T362] CR2: 00007f8598d01204 CR3: 000000000ba6f002 CR4: 0000000000772ef0
[   89.466266][  T362] PKRU: 55555554
[   89.466404][  T362] Call Trace:
[   89.466621][  T362]  <TASK>
[   89.466713][  T362]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   89.466905][  T362]  ? dev_ingress_queue_create (net/core/dev.c:12299)
[   89.467085][  T362]  ? generic_xdp_install (net/core/dev.c:11630)
[   89.467286][  T362]  ? unregister_netdevice_many (net/core/dev.c:12241)
[   89.467672][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.467873][  T362]  rtnl_dellink (net/core/rtnetlink.c:3580)
[   89.468054][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   89.468318][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.468586][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.468764][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.468945][  T362]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   89.469125][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   89.469333][  T362]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[   89.469734][  T362]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   89.469915][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   89.470093][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.470297][  T362]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   89.470564][  T362]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   89.470738][  T362]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   89.470919][  T362]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   89.471114][  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)
[   89.471306][  T362]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   89.471667][  T362]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   89.471849][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.472025][  T362]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   89.472229][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   89.472412][  T362]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   89.472675][  T362]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   89.472859][  T362]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   89.473035][  T362]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   89.473279][  T362]  ? __copy_msghdr (net/socket.c:2556)
[   89.473468][  T362]  ___sys_sendmsg (net/socket.c:2686)
[   89.473733][  T362]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   89.473912][  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)
[   89.474149][  T362]  ? copy_msghdr_from_user (net/socket.c:2673)
[   89.474343][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.474614][  T362]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   89.474798][  T362]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   89.474969][  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)
[   89.475269][  T362]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   89.475458][  T362]  __sys_sendmsg (net/socket.c:2716)
[   89.475710][  T362]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   89.475940][  T362]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   89.476133][  T362]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   89.476337][  T362]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   89.476701][  T362]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   89.476926][  T362] RIP: 0033:0x7f8598df31d7
[   89.477120][  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)
[   89.477873][  T362] RSP: 002b:00007ffd47567968 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   89.478157][  T362] RAX: ffffffffffffffda RBX: 0000000011b95320 RCX: 00007f8598df31d7
[   89.478449][  T362] RDX: 0000000000000000 RSI: 00007ffd475679a0 RDI: 0000000000000005
[   89.478812][  T362] RBP: 0000000011b95230 R08: 0000000000000003 R09: 0000000000000000
[   89.479081][  T362] R10: 0000000000001000 R11: 0000000000000246 R12: 0000000011bba830


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