======================================
| [  126.500384][ T1083] ==================================================================
| [  126.500736][ T1083] BUG: KASAN: slab-use-after-free in kobject_put (lib/kobject.c:733)
| [  126.501012][ T1083] Read of size 1 at addr ffff888005a916c4 by task ip/1083
| [  126.501231][ T1083]
[  126.501338][ T1083] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  126.501341][ T1083] Call Trace:
[  126.501344][ T1083]  <TASK>
[  126.501347][ T1083]  dump_stack_lvl (lib/dump_stack.c:123)
[  126.501354][ T1083]  print_address_description.constprop.0 (mm/kasan/report.c:379)
[  126.501362][ T1083]  ? kobject_put (lib/kobject.c:733)
[  126.501365][ T1083]  print_report (mm/kasan/report.c:483)
[  126.501369][ T1083]  ? kobject_put (lib/kobject.c:733)
[  126.501372][ T1083]  ? kasan_addr_to_slab (./include/linux/mm.h:1245 mm/kasan/../slab.h:191 mm/kasan/common.c:47)
[  126.501375][ T1083]  ? kobject_put (lib/kobject.c:733)
[  126.501378][ T1083]  kasan_report (mm/kasan/report.c:597)
[  126.501382][ T1083]  ? kobject_put (lib/kobject.c:733)
[  126.501388][ T1083]  kobject_put (lib/kobject.c:733)
[  126.501391][ T1083]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[  126.501397][ T1083]  ? dev_ingress_queue_create (net/core/dev.c:12299)
[  126.501401][ T1083]  ? generic_xdp_install (net/core/dev.c:11630)
[  126.501404][ T1083]  ? unregister_netdevice_many (net/core/dev.c:12241)
[  126.501410][ T1083]  rtnl_dellink (net/core/rtnetlink.c:3580)
[  126.501416][ T1083]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[  126.501435][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.501442][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.501448][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.501452][ T1083]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  126.501455][ T1083]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  126.501458][ T1083]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[  126.501462][ T1083]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  126.501466][ T1083]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  126.501470][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.501476][ T1083]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  126.501480][ T1083]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  126.501484][ T1083]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  126.501490][ T1083]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  126.501493][ T1083]  ? 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)
[  126.501496][ T1083]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  126.501500][ T1083]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  126.501503][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.501508][ T1083]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  126.501512][ T1083]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  126.501515][ T1083]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  126.501524][ T1083]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  126.501527][ T1083]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  126.501530][ T1083]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  126.501533][ T1083]  ? __copy_msghdr (net/socket.c:2556)
[  126.501540][ T1083]  ___sys_sendmsg (net/socket.c:2686)
[  126.501542][ T1083]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  126.501545][ T1083]  ? __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)
[  126.501550][ T1083]  ? copy_msghdr_from_user (net/socket.c:2673)
[  126.501554][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.501559][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.501564][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.501568][ T1083]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  126.501573][ T1083]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  126.501578][ T1083]  __sys_sendmsg (net/socket.c:2716)
[  126.501581][ T1083]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  126.501583][ T1083]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  126.501590][ T1083]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  126.501598][ T1083]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  126.501604][ T1083]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  126.501607][ T1083] RIP: 0033:0x7f91f061b1d7
[  126.501612][ T1083] 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)
[  126.501615][ T1083] RSP: 002b:00007ffefae44b38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  126.501619][ T1083] RAX: ffffffffffffffda RBX: 00007ffefae45270 RCX: 00007f91f061b1d7
[  126.501621][ T1083] RDX: 0000000000000000 RSI: 00007ffefae44ba0 RDI: 0000000000000005
[  126.501623][ T1083] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[  126.501625][ T1083] R10: 00007f91f0517510 R11: 0000000000000246 R12: 0000000000000002
[  126.501626][ T1083] R13: 00000000690dfb8d R14: 0000000000499600 R15: 0000000000000000
| [  126.532944][ T1083] refcount_t: underflow; use-after-free.
| [  126.533140][ T1083] WARNING: CPU: 3 PID: 1083 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28 (discriminator 3))
| [  126.533564][ T1083] Modules linked in:
| [  126.534057][ T1083] Tainted: [B]=BAD_PAGE
[  126.534190][ T1083] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  126.534519][ T1083] RIP: 0010:refcount_warn_saturate (lib/refcount.c:28 (discriminator 3))
[  126.534740][ T1083] Code: cc 38 03 80 fb 01 0f 87 29 33 d7 fe 83 e3 01 0f 85 51 ff ff ff c6 05 17 cc 38 03 01 90 48 c7 c7 40 ba 85 96 e8 62 d6 16 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 c0 9d a0 ff e9 ba fe ff ff
All code
========
   0:	cc                   	int3
   1:	38 03                	cmp    %al,(%rbx)
   3:	80 fb 01             	cmp    $0x1,%bl
   6:	0f 87 29 33 d7 fe    	ja     0xfffffffffed73335
   c:	83 e3 01             	and    $0x1,%ebx
   f:	0f 85 51 ff ff ff    	jne    0xffffffffffffff66
  15:	c6 05 17 cc 38 03 01 	movb   $0x1,0x338cc17(%rip)        # 0x338cc33
  1c:	90                   	nop
  1d:	48 c7 c7 40 ba 85 96 	mov    $0xffffffff9685ba40,%rdi
  24:	e8 62 d6 16 ff       	call   0xffffffffff16d68b
  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 c0 9d a0 ff       	call   0xffffffffffa09dfb
  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 c0 9d a0 ff       	call   0xffffffffffa09dd1
  11:	e9 ba fe ff ff       	jmp    0xfffffffffffffed0
[  126.535464][ T1083] RSP: 0018:ffffc900023971f0 EFLAGS: 00010286
[  126.535681][ T1083] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[  126.536036][ T1083] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[  126.536301][ T1083] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff2f00934
[  126.536580][ T1083] R10: 0000000000000003 R11: ffffc90002396d80 R12: 0000000000000001
[  126.536935][ T1083] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100
[  126.537197][ T1083] FS:  00007f91f044d800(0000) GS:ffff8880d4488000(0000) knlGS:0000000000000000
[  126.537610][ T1083] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  126.537833][ T1083] CR2: 00000000004e5a38 CR3: 000000000586b003 CR4: 0000000000772ef0
[  126.538090][ T1083] PKRU: 55555554
[  126.538222][ T1083] Call Trace:
[  126.538364][ T1083]  <TASK>
[  126.538455][ T1083]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[  126.538634][ T1083]  ? dev_ingress_queue_create (net/core/dev.c:12299)
[  126.538809][ T1083]  ? generic_xdp_install (net/core/dev.c:11630)
[  126.539071][ T1083]  ? unregister_netdevice_many (net/core/dev.c:12241)
[  126.539252][ T1083]  rtnl_dellink (net/core/rtnetlink.c:3580)
[  126.539443][ T1083]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[  126.539668][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.539938][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.540110][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.540292][ T1083]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  126.540474][ T1083]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  126.540743][ T1083]  ? valid_bridge_getlink_req.constprop.0 (net/core/rtnetlink.c:3536)
[  126.540956][ T1083]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  126.541129][ T1083]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  126.541309][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.541580][ T1083]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  126.541753][ T1083]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  126.541928][ T1083]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  126.542108][ T1083]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  126.542394][ T1083]  ? 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)
[  126.542567][ T1083]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  126.542740][ T1083]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  126.542913][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.543179][ T1083]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  126.543361][ T1083]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  126.543536][ T1083]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  126.543716][ T1083]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  126.543978][ T1083]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  126.544150][ T1083]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  126.544378][ T1083]  ? __copy_msghdr (net/socket.c:2556)
[  126.544555][ T1083]  ___sys_sendmsg (net/socket.c:2686)
[  126.544819][ T1083]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  126.544993][ T1083]  ? __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)
[  126.545210][ T1083]  ? copy_msghdr_from_user (net/socket.c:2673)
[  126.545490][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.545669][ T1083]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  126.545841][ T1083]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  126.546013][ T1083]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  126.546285][ T1083]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  126.546469][ T1083]  __sys_sendmsg (net/socket.c:2716)
[  126.546655][ T1083]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  126.546873][ T1083]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  126.547141][ T1083]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  126.547319][ T1083]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  126.547504][ T1083]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  126.547715][ T1083] RIP: 0033:0x7f91f061b1d7
[  126.547993][ T1083] 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)
[  126.548719][ T1083] RSP: 002b:00007ffefae44b38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  126.548983][ T1083] RAX: ffffffffffffffda RBX: 00007ffefae45270 RCX: 00007f91f061b1d7
[  126.549241][ T1083] RDX: 0000000000000000 RSI: 00007ffefae44ba0 RDI: 0000000000000005
[  126.549617][ T1083] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[  126.549876][ T1083] R10: 00007f91f0517510 R11: 0000000000000246 R12: 0000000000000002


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