======================================
| [   48.232825][  T633] br: port 1(vx) entered forwarding state
| [   48.233926][  T633] ------------[ cut here ]------------
| [ 48.235061][ T633] WARNING: CPU: 0 PID: 633 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) 
| [   48.235697][  T633] Modules linked in: vxlan
[   48.236736][  T633] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.237112][ T633] 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) 
[ 48.237494][ T633] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   48.238563][  T633] RSP: 0018:ffffc90001a46ef0 EFLAGS: 00010246
[   48.238947][  T633] RAX: 0000000000000000 RBX: ffff88800eafa000 RCX: 0000000000000001
[   48.239401][  T633] RDX: 0000000000000000 RSI: ffffffffa0310759 RDI: ffffffff9fa58280
[   48.239851][  T633] RBP: ffffc90001a46fd8 R08: 0000000000000000 R09: 0000000000000000
[   48.240309][  T633] R10: ffffc90001a47008 R11: ffffffffa16ceab8 R12: 1ffff92000348de2
[   48.240756][  T633] R13: 00000000000005dc R14: ffffc90001a47008 R15: ffff88800eafaf48
[   48.241213][  T633] FS:  00007fc85ca4f800(0000) GS:ffff8880ca599000(0000) knlGS:0000000000000000
[   48.241733][  T633] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.242111][  T633] CR2: 00000000004e6e08 CR3: 000000000ec1d003 CR4: 0000000000772ef0
[   48.242573][  T633] PKRU: 55555554
[   48.242800][  T633] Call Trace:
[   48.243022][  T633]  <TASK>
[ 48.243181][ T633] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 48.243498][ T633] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 48.243809][ T633] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 48.244186][ T633] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 48.244507][ T633] netif_set_mtu (net/core/dev.c:9652) 
[ 48.244811][ T633] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 48.245120][ T633] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 48.245524][ T633] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 48.245751][ T633] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 48.246063][ T633] br_add_if (net/bridge/br_if.c:697) 
[ 48.246307][ T633] do_set_master (net/core/rtnetlink.c:2948) 
[ 48.246604][ T633] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 48.246930][ T633] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 48.247239][ T633] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 48.247617][ T633] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 48.247931][ T633] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 48.248230][ T633] ? __kernel_text_address (kernel/extable.c:79) 
[ 48.248528][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.248826][ T633] ? __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) 
[ 48.249124][ T633] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 48.249499][ T633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 48.249800][ T633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 48.250093][ T633] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 48.250398][ T633] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 48.250698][ T633] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 48.251005][ T633] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 48.251305][ T633] ? __create_object (mm/kmemleak.c:771) 
[ 48.251608][ T633] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 48.251920][ T633] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 48.252231][ T633] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 48.252597][ T633] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 48.252898][ T633] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 48.253209][ T633] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 48.253506][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.253806][ T633] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 48.254104][ T633] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 48.254406][ T633] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 48.254713][ T633] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 48.255020][ T633] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 48.255327][ T633] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 48.255626][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.255940][ T633] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 48.256247][ T633] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 48.256545][ T633] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 48.256855][ T633] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 48.257154][ T633] ? 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) 
[ 48.257458][ T633] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 48.257757][ T633] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 48.258051][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.258383][ T633] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 48.258687][ T633] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 48.258984][ T633] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 48.259437][ T633] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 48.259772][ T633] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 48.260081][ T633] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 48.260598][ T633] ___sys_sendmsg (net/socket.c:2670) 
[ 48.260894][ T633] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 48.261190][ T633] ? __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) 
[ 48.261715][ T633] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 48.262013][ T633] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 48.262440][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.262743][ T633] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 48.263036][ T633] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 48.263342][ T633] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 48.263645][ T633] __sys_sendmsg (net/socket.c:2700) 
[ 48.263937][ T633] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 48.264309][ T633] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 48.264624][ T633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 48.264920][ T633] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 48.265227][ T633] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.265609][  T633] RIP: 0033:0x7fc85cc1c1e7
[ 48.265916][ T633] 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)
[   48.266988][  T633] RSP: 002b:00007ffe4e33f0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   48.267446][  T633] RAX: ffffffffffffffda RBX: 00007ffe4e33f810 RCX: 00007fc85cc1c1e7
[   48.267891][  T633] RDX: 0000000000000000 RSI: 00007ffe4e33f150 RDI: 0000000000000005
[   48.268343][  T633] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   48.268789][  T633] R10: 000000001e314910 R11: 0000000000000246 R12: 0000000000000004
[   48.269244][  T633] R13: 00000000686e4d45 R14: 0000000000499600 R15: 0000000000000000
| [   51.901877][  T695] ------------[ cut here ]------------
| [ 51.902181][ T695] WARNING: CPU: 0 PID: 695 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) 
| [   51.902776][  T695] Modules linked in: vxlan
| [   51.904055][  T695] Tainted: [W]=WARN
[   51.904295][  T695] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 51.904679][ T695] 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) 
[ 51.904984][ T695] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   51.906044][  T695] RSP: 0018:ffffc90000796f60 EFLAGS: 00010246
[   51.906427][  T695] RAX: 0000000000000000 RBX: ffff88800eafa000 RCX: 0000000000000001
[   51.906870][  T695] RDX: 0000000000000000 RSI: ffffffffa0310759 RDI: ffffffff9fa58280
[   51.907323][  T695] RBP: ffffc90000797050 R08: 0000000000000000 R09: 0000000000000000
[   51.907762][  T695] R10: ffffc90000797080 R11: ffffffff9c400130 R12: 1ffff920000f2df0
[   51.908211][  T695] R13: 00000000000005dc R14: ffffc90000797080 R15: ffff88800eafaf48
[   51.908653][  T695] FS:  00007efd7a2ac800(0000) GS:ffff8880ca599000(0000) knlGS:0000000000000000
[   51.909178][  T695] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   51.909555][  T695] CR2: 00000000004e62d8 CR3: 0000000011803002 CR4: 0000000000772ef0
[   51.909996][  T695] PKRU: 55555554
[   51.910223][  T695] Call Trace:
[   51.910442][  T695]  <TASK>
[ 51.910590][ T695] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 51.910888][ T695] ? __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) 
[ 51.911260][ T695] ? br_del_if (net/bridge/br_if.c:742) 
[ 51.911482][ T695] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 51.911776][ T695] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 51.912069][ T695] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 51.912412][ T695] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 51.912710][ T695] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 51.913002][ T695] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 51.913316][ T695] ? ___sys_sendmsg (net/socket.c:2670) 
[ 51.913609][ T695] ? __sys_sendmsg (net/socket.c:2700) 
[ 51.913899][ T695] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 51.914202][ T695] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 51.914576][ T695] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 51.914882][ T695] netif_set_mtu (net/core/dev.c:9652) 
[ 51.915179][ T695] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 51.915499][ T695] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 51.915732][ T695] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 51.916035][ T695] br_del_if (net/bridge/br_if.c:743) 
[ 51.916266][ T695] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 51.916562][ T695] do_set_master (net/core/rtnetlink.c:2932) 
[ 51.916856][ T695] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 51.917154][ T695] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 51.917465][ T695] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 51.917843][ T695] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 51.918136][ T695] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 51.918436][ T695] ? __kernel_text_address (kernel/extable.c:79) 
[ 51.918732][ T695] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 51.919027][ T695] ? __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) 
[ 51.919331][ T695] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 51.919698][ T695] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 51.919996][ T695] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 51.920310][ T695] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 51.920605][ T695] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 51.920898][ T695] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 51.921205][ T695] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 51.921499][ T695] ? __create_object (mm/kmemleak.c:771) 
[ 51.921797][ T695] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 51.922093][ T695] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 51.922404][ T695] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 51.922767][ T695] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 51.923068][ T695] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 51.923377][ T695] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 51.923673][ T695] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 51.923970][ T695] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 51.924273][ T695] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 51.924586][ T695] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 51.924882][ T695] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 51.925178][ T695] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 51.925483][ T695] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 51.925781][ T695] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 51.926077][ T695] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 51.926381][ T695] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 51.926676][ T695] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 51.926987][ T695] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 51.927285][ T695] ? 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) 
[ 51.927582][ T695] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 51.927878][ T695] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 51.928169][ T695] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 51.928479][ T695] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 51.928780][ T695] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 51.929080][ T695] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 51.929391][ T695] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 51.929689][ T695] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 51.929981][ T695] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 51.930365][ T695] ___sys_sendmsg (net/socket.c:2670) 
[ 51.930662][ T695] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 51.930954][ T695] ? __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) 
[ 51.931337][ T695] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 51.931636][ T695] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 51.931933][ T695] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 51.932239][ T695] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 51.932533][ T695] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 51.932826][ T695] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 51.933127][ T695] __sys_sendmsg (net/socket.c:2700) 
[ 51.933447][ T695] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 51.933815][ T695] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 51.934120][ T695] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 51.934421][ T695] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 51.934731][ T695] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   51.935094][  T695] RIP: 0033:0x7efd7a4791e7
[ 51.935404][ T695] 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)
[   51.936466][  T695] RSP: 002b:00007fff67e02648 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   51.936909][  T695] RAX: ffffffffffffffda RBX: 00007fff67e02d70 RCX: 00007efd7a4791e7
[   51.937358][  T695] RDX: 0000000000000000 RSI: 00007fff67e026b0 RDI: 0000000000000005
[   51.937804][  T695] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   51.938250][  T695] R10: 00007efd7a376ee8 R11: 0000000000000246 R12: 0000000000000003
[   51.938692][  T695] R13: 00000000686e4d49 R14: 0000000000499600 R15: 0000000000000000
| [   52.853371][  T718] ------------[ cut here ]------------
| [ 52.853664][ T718] WARNING: CPU: 1 PID: 718 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) 
| [   52.854255][  T718] Modules linked in: vxlan
| [   52.855215][  T718] Tainted: [W]=WARN
[   52.855442][  T718] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 52.855809][ T718] 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) 
[ 52.856113][ T718] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   52.857334][  T718] RSP: 0018:ffffc90000536ef0 EFLAGS: 00010246
[   52.857711][  T718] RAX: 0000000000000000 RBX: ffff88800b9e2000 RCX: 0000000000000001
[   52.858149][  T718] RDX: 0000000000000000 RSI: ffffffffa0310759 RDI: ffffffff9fa58280
[   52.858755][  T718] RBP: ffffc90000536fd8 R08: 0000000000000000 R09: 0000000000000000
[   52.859354][  T718] R10: ffffc90000537008 R11: ffffffffa16ceab8 R12: 1ffff920000a6de2
[   52.859794][  T718] R13: 00000000000005dc R14: ffffc90000537008 R15: ffff88800b9e2f48
[   52.860372][  T718] FS:  00007f95fa179800(0000) GS:ffff8880ca619000(0000) knlGS:0000000000000000
[   52.860887][  T718] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.861401][  T718] CR2: 00000000004e6e08 CR3: 000000000f6cf002 CR4: 0000000000772ef0
[   52.861942][  T718] PKRU: 55555554
[   52.862165][  T718] Call Trace:
[   52.862524][  T718]  <TASK>
[ 52.862678][ T718] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 52.862977][ T718] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 52.863433][ T718] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 52.863796][ T718] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 52.864096][ T718] netif_set_mtu (net/core/dev.c:9652) 
[ 52.864599][ T718] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 52.864906][ T718] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 52.865412][ T718] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 52.865637][ T718] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 52.865933][ T718] br_add_if (net/bridge/br_if.c:697) 
[ 52.866165][ T718] do_set_master (net/core/rtnetlink.c:2948) 
[ 52.866596][ T718] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 52.866895][ T718] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 52.867330][ T718] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 52.867703][ T718] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 52.867995][ T718] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 52.868474][ T718] ? __kernel_text_address (kernel/extable.c:79) 
[ 52.868770][ T718] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 52.869071][ T718] ? __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) 
[ 52.869502][ T718] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 52.869864][ T718] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 52.870158][ T718] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 52.870612][ T718] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 52.870904][ T718] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 52.871285][ T718] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 52.871590][ T718] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 52.871886][ T718] ? __create_object (mm/kmemleak.c:771) 
[ 52.872182][ T718] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 52.872485][ T718] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 52.872780][ T718] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 52.873142][ T718] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 52.873449][ T718] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 52.873748][ T718] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 52.874043][ T718] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 52.874351][ T718] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 52.874653][ T718] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 52.874943][ T718] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 52.875250][ T718] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 52.875542][ T718] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 52.875835][ T718] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 52.876132][ T718] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 52.876442][ T718] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 52.876737][ T718] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 52.877030][ T718] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 52.877345][ T718] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 52.877636][ T718] ? 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) 
[ 52.877931][ T718] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 52.878232][ T718] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 52.878528][ T718] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 52.878825][ T718] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 52.879120][ T718] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 52.879421][ T718] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 52.879720][ T718] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 52.880019][ T718] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 52.880317][ T718] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 52.880697][ T718] ___sys_sendmsg (net/socket.c:2670) 
[ 52.880987][ T718] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 52.881287][ T718] ? __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) 
[ 52.881653][ T718] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 52.881948][ T718] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 52.882254][ T718] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 52.882553][ T718] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 52.882848][ T718] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 52.883140][ T718] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 52.883449][ T718] __sys_sendmsg (net/socket.c:2700) 
[ 52.883742][ T718] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 52.884105][ T718] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 52.884418][ T718] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 52.884719][ T718] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 52.885017][ T718] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   52.885388][  T718] RIP: 0033:0x7f95fa3461e7
[ 52.885693][ T718] 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)
[   52.886742][  T718] RSP: 002b:00007ffd93e62d28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   52.887190][  T718] RAX: ffffffffffffffda RBX: 00007ffd93e63450 RCX: 00007f95fa3461e7
[   52.887642][  T718] RDX: 0000000000000000 RSI: 00007ffd93e62d90 RDI: 0000000000000005
[   52.888081][  T718] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   52.888530][  T718] R10: 000000001d472910 R11: 0000000000000246 R12: 0000000000000004
[   52.888975][  T718] R13: 00000000686e4d4a R14: 0000000000499600 R15: 0000000000000000
| [   56.494488][  T781] ------------[ cut here ]------------
| [ 56.494831][ T781] WARNING: CPU: 2 PID: 781 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) 
| [   56.495598][  T781] Modules linked in: vxlan
| [   56.496532][  T781] Tainted: [W]=WARN
[   56.496770][  T781] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 56.497155][ T781] 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) 
[ 56.497483][ T781] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   56.498601][  T781] RSP: 0018:ffffc90000b76f60 EFLAGS: 00010246
[   56.498998][  T781] RAX: 0000000000000000 RBX: ffff88800b9e2000 RCX: 0000000000000001
[   56.499464][  T781] RDX: 0000000000000000 RSI: ffffffffa0310759 RDI: ffffffff9fa58280
[   56.499923][  T781] RBP: ffffc90000b77050 R08: 0000000000000000 R09: 0000000000000000
[   56.500386][  T781] R10: ffffc90000b77080 R11: ffffffffa0d8d1e0 R12: 1ffff9200016edf0
[   56.500844][  T781] R13: 00000000000005dc R14: ffffc90000b77080 R15: ffff88800b9e2f48
[   56.501306][  T781] FS:  00007fc4b8973800(0000) GS:ffff8880ca699000(0000) knlGS:0000000000000000
[   56.501836][  T781] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.502243][  T781] CR2: 00000000004e62d8 CR3: 0000000002f2b001 CR4: 0000000000772ef0
[   56.502696][  T781] PKRU: 55555554
[   56.502930][  T781] Call Trace:
[   56.503163][  T781]  <TASK>
[ 56.503337][ T781] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 56.503645][ T781] ? __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) 
[ 56.504024][ T781] ? br_del_if (net/bridge/br_if.c:742) 
[ 56.504268][ T781] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 56.504583][ T781] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 56.504893][ T781] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 56.505206][ T781] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 56.505515][ T781] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 56.505817][ T781] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 56.506124][ T781] ? ___sys_sendmsg (net/socket.c:2670) 
[ 56.506436][ T781] ? __sys_sendmsg (net/socket.c:2700) 
[ 56.506741][ T781] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 56.507045][ T781] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 56.507434][ T781] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 56.507748][ T781] netif_set_mtu (net/core/dev.c:9652) 
[ 56.508056][ T781] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 56.508385][ T781] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 56.508627][ T781] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 56.508936][ T781] br_del_if (net/bridge/br_if.c:743) 
[ 56.509168][ T781] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 56.509485][ T781] do_set_master (net/core/rtnetlink.c:2932) 
[ 56.509794][ T781] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 56.510110][ T781] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 56.510430][ T781] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 56.510815][ T781] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 56.511119][ T781] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 56.511435][ T781] ? __kernel_text_address (kernel/extable.c:79) 
[ 56.511745][ T781] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 56.512059][ T781] ? __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) 
[ 56.512374][ T781] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 56.512757][ T781] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 56.513067][ T781] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 56.513380][ T781] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 56.513687][ T781] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 56.513993][ T781] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 56.514306][ T781] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 56.514622][ T781] ? __create_object (mm/kmemleak.c:771) 
[ 56.514931][ T781] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 56.515248][ T781] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 56.515555][ T781] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 56.515937][ T781] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 56.516258][ T781] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 56.516575][ T781] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 56.516879][ T781] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 56.517199][ T781] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 56.517506][ T781] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 56.517814][ T781] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 56.518122][ T781] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 56.518437][ T781] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 56.518746][ T781] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 56.519059][ T781] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 56.519384][ T781] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 56.519692][ T781] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 56.520001][ T781] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 56.520327][ T781] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 56.520633][ T781] ? 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) 
[ 56.520946][ T781] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 56.521263][ T781] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 56.521566][ T781] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 56.521879][ T781] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 56.522187][ T781] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 56.522758][ T781] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 56.523072][ T781] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 56.523393][ T781] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 56.523698][ T781] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 56.524310][ T781] ___sys_sendmsg (net/socket.c:2670) 
[ 56.524618][ T781] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 56.524921][ T781] ? __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) 
[ 56.525309][ T781] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 56.525620][ T781] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 56.525958][ T781] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 56.526284][ T781] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 56.526811][ T781] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 56.527118][ T781] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 56.527442][ T781] __sys_sendmsg (net/socket.c:2700) 
[ 56.527748][ T781] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 56.528346][ T781] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 56.528673][ T781] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 56.528980][ T781] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 56.529304][ T781] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   56.529897][  T781] RIP: 0033:0x7fc4b8b401e7
[ 56.530229][ T781] 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)
[   56.531543][  T781] RSP: 002b:00007ffe47fa9738 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   56.531999][  T781] RAX: ffffffffffffffda RBX: 00007ffe47fa9e60 RCX: 00007fc4b8b401e7
[   56.532675][  T781] RDX: 0000000000000000 RSI: 00007ffe47fa97a0 RDI: 0000000000000005
[   56.533127][  T781] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   56.533596][  T781] R10: 00007fc4b8a3dee8 R11: 0000000000000246 R12: 0000000000000003
[   56.534274][  T781] R13: 00000000686e4d4e R14: 0000000000499600 R15: 0000000000000000
| [   61.826502][  T890] ------------[ cut here ]------------
| [ 61.826799][ T890] WARNING: CPU: 0 PID: 890 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) 
| [   61.827405][  T890] Modules linked in: vxlan
| [   61.828448][  T890] Tainted: [W]=WARN
[   61.828676][  T890] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 61.829044][ T890] 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) 
[ 61.829358][ T890] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   61.830424][  T890] RSP: 0018:ffffc90000fc6ef0 EFLAGS: 00010246
[   61.830800][  T890] RAX: 0000000000000000 RBX: ffff88800a802000 RCX: 0000000000000001
[   61.831250][  T890] RDX: 0000000000000000 RSI: ffffffffa0310759 RDI: ffffffff9fa58280
[   61.831719][  T890] RBP: ffffc90000fc6fd8 R08: 0000000000000000 R09: 0000000000000000
[   61.832163][  T890] R10: ffffc90000fc7008 R11: ffffffffa16ceab8 R12: 1ffff920001f8de2
[   61.832609][  T890] R13: 00000000000005dc R14: ffffc90000fc7008 R15: ffff88800a802f48
[   61.833051][  T890] FS:  00007fb0c0d9c800(0000) GS:ffff8880ca599000(0000) knlGS:0000000000000000
[   61.833574][  T890] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   61.833948][  T890] CR2: 00000000004e5980 CR3: 0000000011212001 CR4: 0000000000772ef0
[   61.834398][  T890] PKRU: 55555554
[   61.834629][  T890] Call Trace:
[   61.834850][  T890]  <TASK>
[ 61.835004][ T890] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 61.835313][ T890] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 61.835607][ T890] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 61.835974][ T890] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 61.836281][ T890] netif_set_mtu (net/core/dev.c:9652) 
[ 61.836575][ T890] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 61.836879][ T890] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 61.837256][ T890] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 61.837481][ T890] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 61.837778][ T890] br_add_if (net/bridge/br_if.c:697) 
[ 61.838014][ T890] do_set_master (net/core/rtnetlink.c:2948) 
[ 61.838316][ T890] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 61.838617][ T890] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 61.838918][ T890] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 61.839298][ T890] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 61.839592][ T890] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 61.839884][ T890] ? __kernel_text_address (kernel/extable.c:79) 
[ 61.840180][ T890] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 61.840487][ T890] ? __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) 
[ 61.840785][ T890] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 61.841152][ T890] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 61.841585][ T890] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 61.841887][ T890] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 61.842184][ T890] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 61.842490][ T890] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 61.842786][ T890] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 61.843079][ T890] ? __create_object (mm/kmemleak.c:771) 
[ 61.843383][ T890] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 61.843681][ T890] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 61.843981][ T890] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 61.844354][ T890] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 61.844667][ T890] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 61.844971][ T890] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 61.845276][ T890] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 61.845577][ T890] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 61.845875][ T890] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 61.846170][ T890] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 61.846478][ T890] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 61.846774][ T890] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 61.847072][ T890] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 61.847380][ T890] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 61.847682][ T890] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 61.847979][ T890] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 61.848286][ T890] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 61.848592][ T890] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 61.848887][ T890] ? 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) 
[ 61.849190][ T890] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 61.849502][ T890] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 61.849798][ T890] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 61.850099][ T890] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 61.850407][ T890] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 61.850706][ T890] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 61.851006][ T890] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 61.851314][ T890] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 61.851611][ T890] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 61.851993][ T890] ___sys_sendmsg (net/socket.c:2670) 
[ 61.852295][ T890] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 61.852592][ T890] ? __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) 
[ 61.852960][ T890] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 61.853272][ T890] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 61.853571][ T890] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 61.853878][ T890] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 61.854173][ T890] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 61.854481][ T890] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 61.854791][ T890] __sys_sendmsg (net/socket.c:2700) 
[ 61.855093][ T890] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 61.855468][ T890] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 61.855779][ T890] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 61.856077][ T890] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 61.856388][ T890] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   61.856754][  T890] RIP: 0033:0x7fb0c0f691e7
[ 61.857058][ T890] 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)
[   61.858121][  T890] RSP: 002b:00007ffdbb0a6ba8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   61.858576][  T890] RAX: ffffffffffffffda RBX: 00007ffdbb0a72d0 RCX: 00007fb0c0f691e7
[   61.859016][  T890] RDX: 0000000000000000 RSI: 00007ffdbb0a6c10 RDI: 0000000000000005
[   61.859461][  T890] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   61.859906][  T890] R10: 000000003e585910 R11: 0000000000000246 R12: 0000000000000004
[   61.860358][  T890] R13: 00000000686e4d53 R14: 0000000000499600 R15: 0000000000000000
| [   65.573185][  T952] ------------[ cut here ]------------
| [ 65.573518][ T952] WARNING: CPU: 1 PID: 952 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) 
| [   65.574107][  T952] Modules linked in: vxlan
| [   65.576331][  T952] Tainted: [W]=WARN
[   65.576555][  T952] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 65.576924][ T952] 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) 
[ 65.577238][ T952] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   65.578299][  T952] RSP: 0018:ffffc900012c6f60 EFLAGS: 00010246
[   65.578673][  T952] RAX: 0000000000000000 RBX: ffff88800a802000 RCX: 0000000000000001
[   65.579114][  T952] RDX: 0000000000000000 RSI: ffffffffa0310759 RDI: ffffffff9fa58280
[   65.579564][  T952] RBP: ffffc900012c7050 R08: 0000000000000000 R09: 0000000000000000
[   65.580009][  T952] R10: ffffc900012c7080 R11: ffffffffa0d8d1e0 R12: 1ffff92000258df0
[   65.580458][  T952] R13: 00000000000005dc R14: ffffc900012c7080 R15: ffff88800a802f48
[   65.580898][  T952] FS:  00007faa567d3800(0000) GS:ffff8880ca619000(0000) knlGS:0000000000000000
[   65.581423][  T952] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.581794][  T952] CR2: 00000000004e5980 CR3: 0000000010ee2004 CR4: 0000000000772ef0
[   65.582252][  T952] PKRU: 55555554
[   65.582474][  T952] Call Trace:
[   65.582694][  T952]  <TASK>
[ 65.582844][ T952] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 65.583140][ T952] ? __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) 
[ 65.583512][ T952] ? br_del_if (net/bridge/br_if.c:742) 
[ 65.583735][ T952] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 65.584034][ T952] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 65.584335][ T952] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 65.584645][ T952] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 65.584940][ T952] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 65.585243][ T952] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 65.585538][ T952] ? ___sys_sendmsg (net/socket.c:2670) 
[ 65.585833][ T952] ? __sys_sendmsg (net/socket.c:2700) 
[ 65.586128][ T952] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 65.586435][ T952] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 65.586803][ T952] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.587108][ T952] netif_set_mtu (net/core/dev.c:9652) 
[ 65.587415][ T952] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 65.587728][ T952] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 65.587954][ T952] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 65.588264][ T952] br_del_if (net/bridge/br_if.c:743) 
[ 65.588487][ T952] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 65.588786][ T952] do_set_master (net/core/rtnetlink.c:2932) 
[ 65.589079][ T952] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 65.589391][ T952] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 65.589693][ T952] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 65.590069][ T952] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 65.590373][ T952] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 65.590669][ T952] ? __kernel_text_address (kernel/extable.c:79) 
[ 65.590971][ T952] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.591282][ T952] ? __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) 
[ 65.591579][ T952] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 65.591945][ T952] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.592252][ T952] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.592548][ T952] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 65.592843][ T952] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 65.593142][ T952] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.593450][ T952] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 65.593744][ T952] ? __create_object (mm/kmemleak.c:771) 
[ 65.594039][ T952] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 65.594345][ T952] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 65.594658][ T952] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 65.595025][ T952] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 65.595342][ T952] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 65.595649][ T952] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 65.595943][ T952] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.596256][ T952] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.596552][ T952] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 65.596842][ T952] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 65.597137][ T952] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 65.597442][ T952] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 65.597740][ T952] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 65.598045][ T952] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.598354][ T952] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 65.598648][ T952] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 65.598943][ T952] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 65.599257][ T952] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 65.599553][ T952] ? 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) 
[ 65.599852][ T952] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 65.600152][ T952] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 65.600456][ T952] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.600757][ T952] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 65.601055][ T952] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 65.601361][ T952] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 65.601666][ T952] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 65.601963][ T952] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 65.602268][ T952] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 65.602649][ T952] ___sys_sendmsg (net/socket.c:2670) 
[ 65.602943][ T952] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 65.603245][ T952] ? __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) 
[ 65.603615][ T952] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 65.603916][ T952] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.604228][ T952] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.604537][ T952] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.604833][ T952] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 65.605127][ T952] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 65.605441][ T952] __sys_sendmsg (net/socket.c:2700) 
[ 65.605735][ T952] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 65.606101][ T952] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 65.606419][ T952] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.606723][ T952] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 65.607017][ T952] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   65.607393][  T952] RIP: 0033:0x7faa569a01e7
[ 65.607699][ T952] 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)
[   65.608762][  T952] RSP: 002b:00007fffb5d29608 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   65.609219][  T952] RAX: ffffffffffffffda RBX: 00007fffb5d29d30 RCX: 00007faa569a01e7
[   65.609662][  T952] RDX: 0000000000000000 RSI: 00007fffb5d29670 RDI: 0000000000000005
[   65.610103][  T952] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   65.610553][  T952] R10: 00007faa5689dee8 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
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