======================================
| [   23.468212][  T285] vtep-host: entered promiscuous mode
| [   23.474227][  T285] ------------[ cut here ]------------
| [ 23.474848][ T285] WARNING: CPU: 0 PID: 285 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.475911][  T285] Modules linked in: 8021q veth br_netfilter bridge stp llc
[   23.479194][  T285] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.479893][ T285] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.480535][ T285] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.482615][  T285] RSP: 0018:ffffc90000676ef0 EFLAGS: 00010246
[   23.483256][  T285] RAX: 0000000000000000 RBX: ffff88800c622000 RCX: 0000000000000001
[   23.484019][  T285] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   23.484886][  T285] RBP: ffffc90000676fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.485662][  T285] R10: ffffc90000677010 R11: ffffffffbb9798a0 R12: 1ffff920000cede2
[   23.486378][  T285] R13: 00000000000005dc R14: ffffc90000677010 R15: ffff88800c622f08
[   23.487115][  T285] FS:  00007f063b15c800(0000) GS:ffff888078ca7000(0000) knlGS:0000000000000000
[   23.488165][  T285] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.488855][  T285] CR2: 00000000004e6888 CR3: 0000000009309001 CR4: 0000000000772ef0
[   23.489636][  T285] PKRU: 55555554
[   23.490028][  T285] Call Trace:
[   23.490422][  T285]  <TASK>
[ 23.490679][ T285] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.491244][ T285] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.491845][ T285] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.492403][ T285] netif_set_mtu (net/core/dev.c:9652) 
[ 23.492917][ T285] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.493793][ T285] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.494188][ T285] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.494852][ T285] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.495493][ T285] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.496134][ T285] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.496658][ T285] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.497293][ T285] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.497793][ T285] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.498283][ T285] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.498757][ T285] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.499310][ T285] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.499901][ T285] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.500550][ T285] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.501053][ T285] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.501543][ T285] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.502002][ T285] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.502511][ T285] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.502997][ T285] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.503500][ T285] ? __create_object (mm/kmemleak.c:771) 
[ 23.504072][ T285] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.504674][ T285] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.505200][ T285] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.505786][ T285] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.506294][ T285] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.506833][ T285] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.507316][ T285] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.507791][ T285] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.508265][ T285] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.508724][ T285] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.509274][ T285] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.509867][ T285] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.510426][ T285] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.510951][ T285] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.511444][ T285] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.511900][ T285] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.512365][ T285] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.512845][ T285] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.513348][ T285] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.513900][ T285] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.514451][ T285] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.514980][ T285] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.515582][ T285] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.516150][ T285] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.516714][ T285] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 23.517205][ T285] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.517768][ T285] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.518367][ T285] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.519123][ T285] ___sys_sendmsg (net/socket.c:2670) 
[ 23.519668][ T285] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.520184][ T285] ? __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:3096) 
[ 23.520747][ T285] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.521246][ T285] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.521712][ T285] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.522207][ T285] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.522710][ T285] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.523280][ T285] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.523839][ T285] __sys_sendmsg (net/socket.c:2700) 
[ 23.524403][ T285] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.525050][ T285] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.525636][ T285] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.526189][ T285] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.526731][ T285] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.527452][  T285] RIP: 0033:0x7f063b3291e7
[ 23.528039][ T285] 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)
[   23.530011][  T285] RSP: 002b:00007ffec6d94138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.530869][  T285] RAX: ffffffffffffffda RBX: 00007ffec6d94870 RCX: 00007f063b3291e7
[   23.531675][  T285] RDX: 0000000000000000 RSI: 00007ffec6d941a0 RDI: 0000000000000005
[   23.532463][  T285] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.533220][  T285] R10: 000000004014d910 R11: 0000000000000246 R12: 0000000000000004
[   23.533982][  T285] R13: 00000000686e2835 R14: 0000000000499600 R15: 0000000000000000
| [   24.656047][  T292] ------------[ cut here ]------------
| [ 24.656390][ T292] WARNING: CPU: 3 PID: 292 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   24.657046][  T292] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   24.658359][  T292] Tainted: [W]=WARN
[   24.658603][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.659004][ T292] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 24.659352][ T292] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   24.660489][  T292] RSP: 0018:ffffc90000b56ef0 EFLAGS: 00010246
[   24.660903][  T292] RAX: 0000000000000000 RBX: ffff88800c622000 RCX: 0000000000000001
[   24.661401][  T292] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   24.661879][  T292] RBP: ffffc90000b56fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.662366][  T292] R10: ffffc90000b57010 R11: ffffffffbb9798a0 R12: 1ffff9200016ade2
[   24.662850][  T292] R13: 00000000000005dc R14: ffffc90000b57010 R15: ffff88800c622f08
[   24.663349][  T292] FS:  00007fd56d5f0800(0000) GS:ffff888078e27000(0000) knlGS:0000000000000000
[   24.663924][  T292] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.664337][  T292] CR2: 00000000004e58f8 CR3: 0000000008953001 CR4: 0000000000772ef0
[   24.664814][  T292] PKRU: 55555554
[   24.665051][  T292] Call Trace:
[   24.665305][  T292]  <TASK>
[ 24.665470][ T292] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.665804][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.666140][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.666459][ T292] netif_set_mtu (net/core/dev.c:9652) 
[ 24.666775][ T292] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.667152][ T292] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.667393][ T292] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.667849][ T292] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.668206][ T292] do_set_master (net/core/rtnetlink.c:2948) 
[ 24.668522][ T292] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.668834][ T292] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.669233][ T292] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.669540][ T292] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.669859][ T292] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.670220][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.670541][ T292] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 24.670866][ T292] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.671276][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.671600][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.671916][ T292] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.672256][ T292] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.672586][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.672903][ T292] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.673227][ T292] ? __create_object (mm/kmemleak.c:771) 
[ 24.673552][ T292] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.673875][ T292] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.674226][ T292] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.674628][ T292] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.674956][ T292] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.675293][ T292] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.675611][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.675934][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.676282][ T292] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.676596][ T292] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.676912][ T292] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.677235][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.677551][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.677878][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.678204][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.678536][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.678854][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.679196][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.679514][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 24.679839][ T292] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.680177][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.680527][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.680866][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.681211][ T292] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.681538][ T292] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 24.681860][ T292] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.682187][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.682514][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.683179][ T292] ___sys_sendmsg (net/socket.c:2670) 
[ 24.683494][ T292] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.683813][ T292] ? __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:3096) 
[ 24.684216][ T292] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.684760][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.685080][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.685432][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.685756][ T292] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.686312][ T292] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.686657][ T292] __sys_sendmsg (net/socket.c:2700) 
[ 24.686981][ T292] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.687615][ T292] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.687985][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.688316][ T292] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.688637][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.689268][  T292] RIP: 0033:0x7fd56d7bd1e7
[ 24.689594][ T292] 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)
[   24.690996][  T292] RSP: 002b:00007ffd60bfa5a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.691481][  T292] RAX: ffffffffffffffda RBX: 00007ffd60bface0 RCX: 00007fd56d7bd1e7
[   24.691956][  T292] RDX: 0000000000000000 RSI: 00007ffd60bfa610 RDI: 0000000000000005
[   24.692444][  T292] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   24.692943][  T292] R10: 000000004039d910 R11: 0000000000000246 R12: 0000000000000003
[   24.693663][  T292] R13: 00000000686e2836 R14: 0000000000499600 R15: 0000000000000000
| [   27.424661][  T305] ------------[ cut here ]------------
| [ 27.425239][ T305] WARNING: CPU: 1 PID: 305 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   27.426143][  T305] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   27.428218][  T305] Tainted: [W]=WARN
[   27.428557][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 27.429323][ T305] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 27.429785][ T305] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   27.431687][  T305] RSP: 0018:ffffc90000637140 EFLAGS: 00010246
[   27.432728][  T305] RAX: 0000000000000000 RBX: ffff88800f19a000 RCX: 0000000000000001
[   27.433702][  T305] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   27.434373][  T305] RBP: ffffc90000637230 R08: ffff88800dc1d000 R09: 0000000000000000
[   27.435031][  T305] R10: ffffc900006375c8 R11: ffffffffbc259728 R12: 1ffff920000c6e2c
[   27.435753][  T305] R13: 00000000000003e8 R14: ffffc90000637880 R15: ffff888005c3d1e0
[   27.436472][  T305] FS:  00007fd465b40800(0000) GS:ffff888078d27000(0000) knlGS:0000000000000000
[   27.437332][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.437966][  T305] CR2: 00000000004e58f8 CR3: 000000000e9a6001 CR4: 0000000000772ef0
[   27.438748][  T305] PKRU: 55555554
[   27.439156][  T305] Call Trace:
[   27.439534][  T305]  <TASK>
[ 27.439806][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.440359][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.440898][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.441444][ T305] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 27.441869][ T305] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 27.442329][ T305] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 27.442779][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 27.443289][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 27.443860][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 27.444340][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 27.444788][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 27.445269][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.445729][ T305] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 27.446236][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 27.446825][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.447324][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.447748][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 27.448227][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 27.448682][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.449146][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 27.449596][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 27.450061][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 27.450549][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 27.451033][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 27.451643][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 27.452145][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 27.452642][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.453124][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.453587][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.454033][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 27.454545][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.455044][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.455570][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 27.456073][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.456602][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.457143][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 27.457654][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.458187][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 27.458661][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 27.459078][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 27.459559][ T305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 27.460040][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 27.460551][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 27.461063][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 27.461543][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 27.461968][ T305] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 27.462386][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 27.462834][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 27.463325][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 27.463903][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 27.464316][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 27.464732][ T305] ? __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:3096) 
[ 27.465252][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 27.465667][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.466073][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.466527][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.466939][ T305] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 27.467371][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.467792][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 27.468231][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 27.468735][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 27.469193][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.469611][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 27.470027][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   27.470563][  T305] RIP: 0033:0x7fd465d0d1e7
[ 27.471056][ T305] 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)
[   27.472589][  T305] RSP: 002b:00007ffc116a9a18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   27.473228][  T305] RAX: ffffffffffffffda RBX: 00007ffc116aa150 RCX: 00007fd465d0d1e7
[   27.473860][  T305] RDX: 0000000000000000 RSI: 00007ffc116a9a80 RDI: 0000000000000005
[   27.474491][  T305] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   27.475132][  T305] R10: 00007fd465c0a498 R11: 0000000000000246 R12: 0000000000000003
[   27.475841][  T305] R13: 00000000686e2839 R14: 0000000000499600 R15: 0000000000000000
| [   27.486025][  T305] ------------[ cut here ]------------
| [ 27.486607][ T305] WARNING: CPU: 1 PID: 305 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   27.487959][  T305] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   27.490447][  T305] Tainted: [W]=WARN
[   27.490799][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 27.491433][ T305] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 27.492279][ T305] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   27.493892][  T305] RSP: 0018:ffffc90000636de0 EFLAGS: 00010246
[   27.494824][  T305] RAX: 0000000000000000 RBX: ffff88800c622000 RCX: 0000000000000001
[   27.495516][  T305] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   27.496637][  T305] RBP: ffffc90000636ed0 R08: 0000000000000000 R09: 0000000000000000
[   27.497528][  T305] R10: ffffc90000636f00 R11: ffffffffbb9798a0 R12: 1ffff920000c6dc0
[   27.498383][  T305] R13: 00000000000003e8 R14: ffffc90000636f00 R15: ffff88800c622f08
[   27.499676][  T305] FS:  00007fd465b40800(0000) GS:ffff888078d27000(0000) knlGS:0000000000000000
[   27.500706][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.501363][  T305] CR2: 00000000004e58f8 CR3: 000000000e9a6001 CR4: 0000000000772ef0
[   27.502419][  T305] PKRU: 55555554
[   27.502774][  T305] Call Trace:
[   27.503157][  T305]  <TASK>
[ 27.503434][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.503938][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.504808][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.505331][ T305] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 27.505826][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.506666][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 27.507168][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 27.507666][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.508148][ T305] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 27.508674][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 27.509448][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 27.510152][ T305] br_device_event (net/bridge/br.c:142) bridge 
[ 27.510696][ T305] ? __pfx_br_device_event (net/bridge/br.c:29) bridge 
[ 27.511755][ T305] notifier_call_chain (kernel/notifier.c:87 (discriminator 2)) 
[ 27.512297][ T305] netif_set_mtu_ext (./include/linux/notifier.h:207 net/core/dev.c:9633) 
[ 27.512800][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.513317][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.514142][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.514641][ T305] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 27.515142][ T305] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 27.515603][ T305] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 27.516543][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 27.517160][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 27.517892][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 27.518476][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 27.519486][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 27.520045][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.520622][ T305] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 27.521121][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 27.522070][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.522586][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.523065][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 27.523576][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 27.524446][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.524883][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 27.525371][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 27.525840][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 27.526765][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 27.527268][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 27.527848][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 27.528782][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 27.529314][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.529813][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.530310][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.530795][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 27.531672][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.532135][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.532608][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 27.533153][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.533690][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.534254][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 27.534775][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.535768][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 27.536415][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 27.536992][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 27.537618][ T305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 27.538652][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 27.539290][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 27.539786][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 27.540278][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 27.540810][ T305] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 27.541758][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 27.542291][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 27.542782][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 27.543832][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 27.544362][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 27.544853][ T305] ? __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:3096) 
[ 27.545528][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 27.546458][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.546980][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.547519][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.548025][ T305] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 27.548920][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.549473][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 27.549980][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 27.550635][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 27.551559][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.552034][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 27.552608][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   27.553755][  T305] RIP: 0033:0x7fd465d0d1e7
[ 27.554389][ T305] 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)
[   27.556852][  T305] RSP: 002b:00007ffc116a9a18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   27.557593][  T305] RAX: ffffffffffffffda RBX: 00007ffc116aa150 RCX: 00007fd465d0d1e7
[   27.558346][  T305] RDX: 0000000000000000 RSI: 00007ffc116a9a80 RDI: 0000000000000005
[   27.559491][  T305] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   27.560245][  T305] R10: 00007fd465c0a498 R11: 0000000000000246 R12: 0000000000000003
[   27.561026][  T305] R13: 00000000686e2839 R14: 0000000000499600 R15: 0000000000000000
| [   28.884230][  T308] ------------[ cut here ]------------
| [ 28.884615][ T308] WARNING: CPU: 2 PID: 308 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   28.885214][  T308] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   28.886427][  T308] Tainted: [W]=WARN
[   28.886666][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 28.887029][ T308] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 28.887350][ T308] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   28.888393][  T308] RSP: 0018:ffffc90000507140 EFLAGS: 00010246
[   28.888769][  T308] RAX: 0000000000000000 RBX: ffff88800f19a000 RCX: 0000000000000001
[   28.889215][  T308] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   28.889652][  T308] RBP: ffffc90000507230 R08: ffff88800bf5a000 R09: 0000000000000000
[   28.890095][  T308] R10: ffffc900005075c8 R11: ffffffffbc259728 R12: 1ffff920000a0e2c
[   28.890538][  T308] R13: 00000000000003e8 R14: ffffc90000507880 R15: ffff8880054974e0
[   28.890990][  T308] FS:  00007fba2f89b800(0000) GS:ffff888078da7000(0000) knlGS:0000000000000000
[   28.891680][  T308] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.892477][  T308] CR2: 00000000004e58f8 CR3: 0000000005b68005 CR4: 0000000000772ef0
[   28.893121][  T308] PKRU: 55555554
[   28.893359][  T308] Call Trace:
[   28.893585][  T308]  <TASK>
[ 28.893740][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.894040][ T308] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 28.894344][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.894640][ T308] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 28.894935][ T308] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 28.895253][ T308] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 28.895562][ T308] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 28.895866][ T308] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 28.896250][ T308] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 28.896545][ T308] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 28.896840][ T308] ? __kernel_text_address (kernel/extable.c:79) 
[ 28.897145][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.897480][ T308] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 28.897778][ T308] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 28.898152][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.898449][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.898742][ T308] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 28.899036][ T308] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 28.899356][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.899651][ T308] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 28.899948][ T308] ? __create_object (mm/kmemleak.c:771) 
[ 28.900258][ T308] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 28.900554][ T308] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 28.900859][ T308] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 28.901242][ T308] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 28.901545][ T308] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 28.901846][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 28.902150][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.902456][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.902774][ T308] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 28.903082][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.903396][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 28.903691][ T308] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 28.903986][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 28.904302][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.904604][ T308] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 28.904899][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 28.905204][ T308] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 28.905510][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 28.905801][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 28.906101][ T308] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 28.906398][ T308] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 28.906700][ T308] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 28.906995][ T308] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 28.907300][ T308] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 28.907599][ T308] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 28.907899][ T308] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 28.908207][ T308] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 28.908501][ T308] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 28.908883][ T308] ___sys_sendmsg (net/socket.c:2670) 
[ 28.909188][ T308] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 28.909483][ T308] ? __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:3096) 
[ 28.909847][ T308] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 28.910156][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.910453][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.910753][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.911057][ T308] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 28.911372][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.911678][ T308] __sys_sendmsg (net/socket.c:2700) 
[ 28.911972][ T308] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 28.912349][ T308] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 28.912657][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.912952][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 28.913265][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.913629][  T308] RIP: 0033:0x7fba2fa681e7
[ 28.913936][ T308] 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)
[   28.914957][  T308] RSP: 002b:00007ffc8f930d68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   28.915412][  T308] RAX: ffffffffffffffda RBX: 00007ffc8f9314a0 RCX: 00007fba2fa681e7
[   28.915845][  T308] RDX: 0000000000000000 RSI: 00007ffc8f930dd0 RDI: 0000000000000005
[   28.916300][  T308] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   28.916735][  T308] R10: 00007fba2f965498 R11: 0000000000000246 R12: 0000000000000003
[   28.917180][  T308] R13: 00000000686e283a R14: 0000000000499600 R15: 0000000000000000
| [   30.144905][  T311] ------------[ cut here ]------------
| [ 30.145272][ T311] WARNING: CPU: 3 PID: 311 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   30.145855][  T311] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   30.147049][  T311] Tainted: [W]=WARN
[   30.147289][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.147656][ T311] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 30.147963][ T311] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   30.149028][  T311] RSP: 0018:ffffc900006e7140 EFLAGS: 00010246
[   30.149412][  T311] RAX: 0000000000000000 RBX: ffff88800f19a000 RCX: 0000000000000001
[   30.149854][  T311] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   30.150307][  T311] RBP: ffffc900006e7230 R08: ffff8880093f3800 R09: 0000000000000000
[   30.150757][  T311] R10: ffffc900006e75c8 R11: ffffffffbc259728 R12: 1ffff920000dce2c
[   30.151222][  T311] R13: 00000000000003e8 R14: ffffc900006e7880 R15: ffff88800b6e9fe0
[   30.151677][  T311] FS:  00007fe3c2d2a800(0000) GS:ffff888078e27000(0000) knlGS:0000000000000000
[   30.152215][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.152598][  T311] CR2: 00000000004e58f8 CR3: 000000000e9bf004 CR4: 0000000000772ef0
[   30.153058][  T311] PKRU: 55555554
[   30.153295][  T311] Call Trace:
[   30.153520][  T311]  <TASK>
[ 30.153673][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 30.153976][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 30.154276][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 30.154568][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 30.154861][ T311] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 30.155171][ T311] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 30.155466][ T311] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 30.155764][ T311] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 30.156144][ T311] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 30.156434][ T311] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 30.156717][ T311] ? __kernel_text_address (kernel/extable.c:79) 
[ 30.157010][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 30.157315][ T311] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 30.157604][ T311] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 30.157960][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 30.158264][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 30.158553][ T311] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 30.158841][ T311] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 30.159149][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 30.159443][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 30.159726][ T311] ? __create_object (mm/kmemleak.c:771) 
[ 30.160013][ T311] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 30.160311][ T311] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 30.160600][ T311] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 30.160978][ T311] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 30.161286][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 30.161582][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 30.161877][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 30.162187][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 30.162478][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 30.162768][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 30.163066][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 30.163365][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 30.163663][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 30.163964][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 30.164285][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 30.164588][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 30.164887][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 30.165207][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 30.165506][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 30.165809][ T311] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 30.166122][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 30.166430][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 30.166729][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 30.167026][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 30.167339][ T311] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 30.167645][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 30.167947][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 30.168256][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 30.168646][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 30.168944][ T311] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 30.169254][ T311] ? __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:3096) 
[ 30.169627][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 30.169929][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 30.170251][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 30.170558][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 30.170864][ T311] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 30.171178][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 30.171488][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 30.171785][ T311] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 30.172165][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 30.172476][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 30.172775][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 30.173096][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   30.173468][  T311] RIP: 0033:0x7fe3c2ef71e7
[ 30.173777][ T311] 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)
[   30.174843][  T311] RSP: 002b:00007ffcd7ebc598 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   30.175307][  T311] RAX: ffffffffffffffda RBX: 00007ffcd7ebccd0 RCX: 00007fe3c2ef71e7
[   30.175754][  T311] RDX: 0000000000000000 RSI: 00007ffcd7ebc600 RDI: 0000000000000005
[   30.176199][  T311] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   30.176643][  T311] R10: 00007fe3c2df4498 R11: 0000000000000246 R12: 0000000000000003
[   30.177103][  T311] R13: 00000000686e283b R14: 0000000000499600 R15: 0000000000000000
| [   31.799365][   T69] ------------[ cut here ]------------
| [ 31.799731][ T69] WARNING: CPU: 3 PID: 69 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   31.800504][   T69] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel 8021q veth br_netfilter bridge stp llc
| [   31.802028][   T69] Tainted: [W]=WARN
[   31.802292][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   31.802705][   T69] Workqueue: netns cleanup_net
[ 31.803061][ T69] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 31.803414][ T69] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 ca d1 79 00       	call   0x79d1eb
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   31.804598][   T69] RSP: 0018:ffffc900004a75b0 EFLAGS: 00010246
[   31.805037][   T69] RAX: 0000000000000000 RBX: ffff88800c622000 RCX: 0000000000000001
[   31.805539][   T69] RDX: 0000000000000000 RSI: ffffffffbb49f52e RDI: ffffffffbac5a5a0
[   31.806035][   T69] RBP: ffffc900004a76a0 R08: 0000000000000000 R09: 0000000000000000
[   31.806542][   T69] R10: ffffc900004a76d0 R11: ffffffffb80914d8 R12: 1ffff92000094eba
[   31.807025][   T69] R13: 00000000000003e8 R14: ffffc900004a76d0 R15: ffff88800c622f08
[   31.807536][   T69] FS:  0000000000000000(0000) GS:ffff888078e27000(0000) knlGS:0000000000000000
[   31.808108][   T69] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.808519][   T69] CR2: 000055e13b1d1dec CR3: 000000001fb36003 CR4: 0000000000772ef0
[   31.809001][   T69] PKRU: 55555554
[   31.809252][   T69] Call Trace:
[   31.809498][   T69]  <TASK>
[ 31.809661][ T69] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 31.809986][ T69] ? __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:3096) 
[ 31.810399][ T69] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 31.810769][ T69] ? br_device_event (net/bridge/br.c:141) bridge 
[ 31.811140][ T69] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 31.811464][ T69] ? ops_undo_list (net/core/net_namespace.c:204 net/core/net_namespace.c:251) 
[ 31.811790][ T69] ? cleanup_net (net/core/net_namespace.c:684) 
[ 31.812118][ T69] ? process_one_work (kernel/workqueue.c:3238) 
[ 31.812439][ T69] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 31.812759][ T69] ? kthread (kernel/kthread.c:464) 
[ 31.813001][ T69] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 31.813336][ T69] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 31.813661][ T69] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 31.813996][ T69] netif_set_mtu (net/core/dev.c:9652) 
[ 31.814338][ T69] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 31.814688][ T69] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 31.814938][ T69] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 31.815397][ T69] br_del_if (net/bridge/br_if.c:743) bridge 
[ 31.815765][ T69] br_device_event (net/bridge/br.c:141) bridge 
[ 31.816132][ T69] ? __pfx_br_device_event (net/bridge/br.c:29) bridge 
[ 31.816570][ T69] ? netconsole_netdev_event (drivers/net/netconsole.c:1474) 
[ 31.816914][ T69] notifier_call_chain (kernel/notifier.c:87 (discriminator 2)) 
[ 31.817259][ T69] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 31.817669][ T69] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.h:47 kernel/locking/mutex.c:67) 
[ 31.817989][ T69] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 31.818398][ T69] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 31.818796][ T69] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 31.819205][ T69] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 31.819614][ T69] default_device_exit_batch (net/core/dev.c:12673) 
[ 31.819936][ T69] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 31.820354][ T69] ops_undo_list (net/core/net_namespace.c:204 net/core/net_namespace.c:251) 
[ 31.820679][ T69] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 31.821010][ T69] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 31.821348][ T69] cleanup_net (net/core/net_namespace.c:684) 
[ 31.821676][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 31.822005][ T69] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 31.822341][ T69] process_one_work (kernel/workqueue.c:3238) 
[ 31.822672][ T69] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 31.823001][ T69] ? assign_work (kernel/workqueue.c:1200) 
[ 31.823336][ T69] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 31.823675][ T69] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 31.823999][ T69] kthread (kernel/kthread.c:464) 
[ 31.824255][ T69] ? __pfx_kthread (kernel/kthread.c:413) 
[ 31.824584][ T69] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 31.824902][ T69] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 31.825236][ T69] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 31.825555][ T69] ? __pfx_kthread (kernel/kthread.c:413) 
[ 31.825883][ T69] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 31.826214][ T69] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
netif_set_mtu_ext:rtnl_newlink:rtnetlink_rcv_msg:netlink_rcv_skb:netlink_unicast
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_device_event
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_del_if
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if