======================================
| [   24.638237][  T333] swp1: entered promiscuous mode
| [   24.642889][  T333] ------------[ cut here ]------------
| [ 24.643230][ T333] WARNING: CPU: 2 PID: 333 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) 
| [   24.644038][  T333] Modules linked in:
[   24.644895][  T333] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.645297][ T333] 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) 
[ 24.645620][ T333] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   24.646736][  T333] RSP: 0018:ffffc90000f86ef0 EFLAGS: 00010246
[   24.647140][  T333] RAX: 0000000000000000 RBX: ffff888006302000 RCX: 0000000000000001
[   24.647603][  T333] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   24.648077][  T333] RBP: ffffc90000f86fd8 R08: 0000000000000000 R09: 0000000000000000
[   24.648541][  T333] R10: ffffc90000f87008 R11: ffffffff9238d1e0 R12: 1ffff920001f0de2
[   24.649019][  T333] R13: 00000000000005dc R14: ffffc90000f87008 R15: ffff888006302f48
[   24.649486][  T333] FS:  00007f209a610800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   24.650117][  T333] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.650514][  T333] CR2: 00000000004e6888 CR3: 000000000fafb004 CR4: 0000000000772ef0
[   24.650999][  T333] PKRU: 55555554
[   24.651243][  T333] Call Trace:
[   24.651483][  T333]  <TASK>
[ 24.651663][ T333] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.651983][ T333] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.652314][ T333] netif_set_mtu (net/core/dev.c:9652) 
[ 24.652640][ T333] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.652967][ T333] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.653212][ T333] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 24.653535][ T333] br_add_if (net/bridge/br_if.c:697) 
[ 24.653797][ T333] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.654109][ T333] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 24.654428][ T333] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.654750][ T333] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.655144][ T333] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.655461][ T333] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.655786][ T333] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.656101][ T333] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.656416][ T333] ? __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) 
[ 24.656745][ T333] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.657137][ T333] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.657453][ T333] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.657783][ T333] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.658099][ T333] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.658411][ T333] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.658734][ T333] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.659046][ T333] ? __create_object (mm/kmemleak.c:771) 
[ 24.659370][ T333] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.659703][ T333] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.660034][ T333] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.660437][ T333] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.660791][ T333] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.661124][ T333] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.661455][ T333] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.661798][ T333] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.662119][ T333] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.662426][ T333] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.662759][ T333] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.663072][ T333] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.663385][ T333] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.663708][ T333] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.664029][ T333] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.664337][ T333] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.664908][ T333] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.665231][ T333] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.665548][ T333] ? 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) 
[ 24.665873][ T333] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.666403][ T333] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.666734][ T333] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.667066][ T333] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.667379][ T333] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.667917][ T333] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.668239][ T333] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.668555][ T333] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.668872][ T333] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.669479][ T333] ___sys_sendmsg (net/socket.c:2670) 
[ 24.669805][ T333] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.670114][ T333] ? __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) 
[ 24.670727][ T333] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.671054][ T333] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.671365][ T333] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.671689][ T333] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.672215][ T333] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.672526][ T333] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.672855][ T333] __sys_sendmsg (net/socket.c:2700) 
[ 24.673165][ T333] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.673774][ T333] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.674100][ T333] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.674414][ T333] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.674741][ T333] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.675332][  T333] RIP: 0033:0x7f209a7dd1e7
[ 24.675666][ T333] 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)
[   24.676988][  T333] RSP: 002b:00007ffd98722f18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.677452][  T333] RAX: ffffffffffffffda RBX: 00007ffd98723650 RCX: 00007f209a7dd1e7
[   24.678145][  T333] RDX: 0000000000000000 RSI: 00007ffd98722f80 RDI: 0000000000000005
[   24.678641][  T333] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   24.679109][  T333] R10: 0000000012786910 R11: 0000000000000246 R12: 0000000000000005
[   24.679799][  T333] R13: 00000000686e70c4 R14: 0000000000499600 R15: 0000000000000000
| [   25.204653][  T336] ------------[ cut here ]------------
| [ 25.204991][ T336] WARNING: CPU: 2 PID: 336 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) 
| [   25.205617][  T336] Modules linked in: vxlan
| [   25.206673][  T336] Tainted: [W]=WARN
[   25.206925][  T336] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.207331][ T336] 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) 
[ 25.207673][ T336] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   25.208809][  T336] RSP: 0018:ffffc90000fb7080 EFLAGS: 00010246
[   25.209215][  T336] RAX: 0000000000000000 RBX: ffff888006302000 RCX: 0000000000000001
[   25.209702][  T336] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   25.210185][  T336] RBP: ffffc90000fb7168 R08: 0000000000000000 R09: 0000000000000000
[   25.210688][  T336] R10: ffffc90000fb7198 R11: ffffffff92cceab8 R12: 1ffff920001f6e14
[   25.211167][  T336] R13: 00000000000005dc R14: ffffc90000fb7198 R15: ffff888006302f48
[   25.211658][  T336] FS:  00007f4bcd204800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   25.212216][  T336] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.212622][  T336] CR2: 00007ff6ff1fa000 CR3: 0000000005aee005 CR4: 0000000000772ef0
[   25.213120][  T336] PKRU: 55555554
[   25.213368][  T336] Call Trace:
[   25.213610][  T336]  <TASK>
[ 25.213794][ T336] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.214122][ T336] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 25.214449][ T336] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 25.214861][ T336] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 25.215443][ T336] netif_set_mtu (net/core/dev.c:9652) 
[ 25.215998][ T336] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.216336][ T336] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 25.216746][ T336] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.217114][ T336] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 25.217442][ T336] br_add_if (net/bridge/br_if.c:697) 
[ 25.217931][ T336] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 25.218253][ T336] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 25.218576][ T336] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 25.218909][ T336] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 25.219452][ T336] ? __dev_get_by_name (net/core/dev.c:865) 
[ 25.219783][ T336] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.220102][ T336] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.220428][ T336] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.221225][ T336] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.221798][ T336] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 25.222366][ T336] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.222910][ T336] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.223454][ T336] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.224031][ T336] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.224578][ T336] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.225099][ T336] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.225659][ T336] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.226541][ T336] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.227154][ T336] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.227754][ T336] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.228354][ T336] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.228974][ T336] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.229567][ T336] ? 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) 
[ 25.230168][ T336] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.230493][ T336] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.230829][ T336] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.231154][ T336] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.231476][ T336] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.231805][ T336] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.232130][ T336] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.232454][ T336] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.232776][ T336] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.233179][ T336] ___sys_sendmsg (net/socket.c:2670) 
[ 25.233728][ T336] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.234045][ T336] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 25.234362][ T336] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.234693][ T336] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 25.235234][ T336] ? __handle_mm_fault (mm/memory.c:6212) 
[ 25.235551][ T336] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 25.235879][ T336] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 25.236217][ T336] __sys_sendmsg (net/socket.c:2700) 
[ 25.236763][ T336] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.237081][ T336] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 25.237410][ T336] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 25.237737][ T336] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.238277][ T336] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.238597][ T336] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.238995][  T336] RIP: 0033:0x7f4bcd3d11e7
[ 25.239329][ T336] Code: Unable to access opcode bytes at 0x7f4bcd3d11bd.

Code starting with the faulting instruction
===========================================
[   25.239995][  T336] RSP: 002b:00007fff5abf7728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.240478][  T336] RAX: ffffffffffffffda RBX: 00007fff5abf7e60 RCX: 00007f4bcd3d11e7
[   25.241188][  T336] RDX: 0000000000000000 RSI: 00007fff5abf7790 RDI: 0000000000000005
[   25.241666][  T336] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[   25.242136][  T336] R10: 00007f4bcd45fac0 R11: 0000000000000246 R12: 00007fff5abf7e98
[   25.242851][  T336] R13: 00000000686e70c4 R14: 0000000000499600 R15: 00007fff5abf7880
| [   27.358291][  T355] ------------[ cut here ]------------
| [ 27.358600][ T355] WARNING: CPU: 3 PID: 355 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) 
| [   27.359286][  T355] Modules linked in: vxlan
| [   27.360210][  T355] Tainted: [W]=WARN
[   27.360437][  T355] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 27.360829][ T355] 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) 
[ 27.361143][ T355] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   27.362244][  T355] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   27.362625][  T355] RAX: 0000000000000000 RBX: ffff88800b21a000 RCX: 0000000000000001
[   27.363083][  T355] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   27.363540][  T355] RBP: ffffc90000556fd8 R08: 0000000000000000 R09: 0000000000000000
[   27.364035][  T355] R10: ffffc90000557008 R11: ffffffff9238d1e0 R12: 1ffff920000aade2
[   27.364485][  T355] R13: 00000000000005dc R14: ffffc90000557008 R15: ffff88800b21af48
[   27.364948][  T355] FS:  00007f1f4c0e9800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[   27.365478][  T355] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.365865][  T355] CR2: 00000000004e6888 CR3: 0000000010d15002 CR4: 0000000000772ef0
[   27.366313][  T355] PKRU: 55555554
[   27.366540][  T355] Call Trace:
[   27.366774][  T355]  <TASK>
[ 27.366929][ T355] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.367239][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.367552][ T355] netif_set_mtu (net/core/dev.c:9652) 
[ 27.367859][ T355] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 27.368173][ T355] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 27.368401][ T355] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 27.368714][ T355] br_add_if (net/bridge/br_if.c:697) 
[ 27.368952][ T355] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 27.369251][ T355] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 27.369559][ T355] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 27.369872][ T355] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 27.370251][ T355] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 27.370556][ T355] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 27.370866][ T355] ? __kernel_text_address (kernel/extable.c:79) 
[ 27.371170][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.371472][ T355] ? __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) 
[ 27.371785][ T355] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 27.372155][ T355] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.372457][ T355] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.372766][ T355] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 27.373066][ T355] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 27.373366][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.373678][ T355] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 27.373979][ T355] ? __create_object (mm/kmemleak.c:771) 
[ 27.374284][ T355] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 27.374583][ T355] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 27.374894][ T355] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 27.375267][ T355] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 27.375572][ T355] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 27.375885][ T355] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.376183][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.376490][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.376800][ T355] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 27.377097][ T355] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.377395][ T355] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.377703][ T355] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 27.378004][ T355] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.378307][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.378610][ T355] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 27.378924][ T355] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.379225][ T355] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 27.379538][ T355] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 27.379847][ T355] ? 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) 
[ 27.380146][ T355] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 27.380455][ T355] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 27.380778][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.381084][ T355] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 27.381384][ T355] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 27.381691][ T355] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 27.381997][ T355] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 27.382298][ T355] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 27.382593][ T355] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 27.382986][ T355] ___sys_sendmsg (net/socket.c:2670) 
[ 27.383284][ T355] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 27.383581][ T355] ? __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) 
[ 27.383960][ T355] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 27.384264][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.384567][ T355] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.384885][ T355] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 27.385185][ T355] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 27.385490][ T355] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.385806][ T355] __sys_sendmsg (net/socket.c:2700) 
[ 27.386104][ T355] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 27.386572][ T355] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 27.386893][ T355] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.387191][ T355] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 27.387486][ T355] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   27.387865][  T355] RIP: 0033:0x7f1f4c2b61e7
[ 27.388170][ T355] 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)
[   27.389237][  T355] RSP: 002b:00007ffef874c5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   27.389691][  T355] RAX: ffffffffffffffda RBX: 00007ffef874cd30 RCX: 00007f1f4c2b61e7
[   27.390136][  T355] RDX: 0000000000000000 RSI: 00007ffef874c660 RDI: 0000000000000005
[   27.390588][  T355] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   27.391039][  T355] R10: 0000000015fbb910 R11: 0000000000000246 R12: 0000000000000005
[   27.391480][  T355] R13: 00000000686e70c6 R14: 0000000000499600 R15: 0000000000000000
| [   27.765111][  T359] ------------[ cut here ]------------
| [ 27.765426][ T359] WARNING: CPU: 0 PID: 359 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) 
| [   27.766046][  T359] Modules linked in: vxlan
| [   27.766999][  T359] Tainted: [W]=WARN
[   27.767230][  T359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 27.767609][ T359] 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) 
[ 27.767931][ T359] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   27.769030][  T359] RSP: 0018:ffffc90000577080 EFLAGS: 00010246
[   27.769415][  T359] RAX: 0000000000000000 RBX: ffff88800b21a000 RCX: 0000000000000001
[   27.769875][  T359] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   27.770347][  T359] RBP: ffffc90000577168 R08: 0000000000000000 R09: 0000000000000000
[   27.770926][  T359] R10: ffffc90000577198 R11: ffffffff9238d1e0 R12: 1ffff920000aee14
[   27.771392][  T359] R13: 00000000000005dc R14: ffffc90000577198 R15: ffff88800b21af48
[   27.771861][  T359] FS:  00007f62f51d2800(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[   27.772400][  T359] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.772794][  T359] CR2: 000000000043d940 CR3: 000000000fa44002 CR4: 0000000000772ef0
[   27.773262][  T359] PKRU: 55555554
[   27.773492][  T359] Call Trace:
[   27.773740][  T359]  <TASK>
[ 27.773904][ T359] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.774214][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.774537][ T359] netif_set_mtu (net/core/dev.c:9652) 
[ 27.774855][ T359] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 27.775180][ T359] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 27.775467][ T359] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 27.775795][ T359] br_add_if (net/bridge/br_if.c:697) 
[ 27.776041][ T359] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 27.776347][ T359] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 27.776665][ T359] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 27.776977][ T359] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 27.777283][ T359] ? __dev_get_by_name (net/core/dev.c:865) 
[ 27.777590][ T359] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 27.777910][ T359] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 27.778221][ T359] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 27.778527][ T359] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 27.778869][ T359] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 27.779190][ T359] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 27.779504][ T359] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.779838][ T359] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 27.780151][ T359] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.780459][ T359] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.780792][ T359] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 27.781106][ T359] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.781418][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.781742][ T359] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 27.782052][ T359] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.782361][ T359] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 27.782693][ T359] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 27.782999][ T359] ? 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) 
[ 27.783309][ T359] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 27.783618][ T359] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 27.783941][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.784256][ T359] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 27.784567][ T359] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 27.784887][ T359] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 27.785203][ T359] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 27.785515][ T359] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 27.785830][ T359] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 27.786226][ T359] ___sys_sendmsg (net/socket.c:2670) 
[ 27.786536][ T359] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 27.786856][ T359] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 27.787171][ T359] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 27.787479][ T359] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 27.787807][ T359] ? __handle_mm_fault (mm/memory.c:6212) 
[ 27.788121][ T359] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 27.788428][ T359] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 27.788768][ T359] __sys_sendmsg (net/socket.c:2700) 
[ 27.789082][ T359] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 27.789392][ T359] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 27.789716][ T359] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 27.790028][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.790340][ T359] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 27.790673][ T359] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   27.791055][  T359] RIP: 0033:0x7f62f539f1e7
[ 27.791374][ T359] 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)
[   27.792500][  T359] RSP: 002b:00007fffefafd138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   27.792979][  T359] RAX: ffffffffffffffda RBX: 00007fffefafd870 RCX: 00007f62f539f1e7
[   27.793448][  T359] RDX: 0000000000000000 RSI: 00007fffefafd1a0 RDI: 0000000000000005
[   27.793920][  T359] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[   27.794381][  T359] R10: 00007f62f542dac0 R11: 0000000000000246 R12: 00007fffefafd8a8
[   27.794853][  T359] R13: 00000000686e70c7 R14: 0000000000499600 R15: 00007fffefafd290
| [   47.786407][   T68] ------------[ cut here ]------------
| [ 47.786823][ T68] WARNING: CPU: 2 PID: 68 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) 
| [   47.787409][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   47.788966][   T68] Tainted: [W]=WARN
[   47.789249][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   47.789700][   T68] Workqueue: netns cleanup_net
[ 47.790063][ T68] 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) 
[ 47.790416][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   47.791649][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[   47.792097][   T68] RAX: 0000000000000000 RBX: ffff888006302000 RCX: 0000000000000001
[   47.792602][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   47.793120][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[   47.793644][   T68] R10: ffffc900004976c8 R11: ffffffff8e29be78 R12: 1ffff92000092eba
[   47.794150][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff888006302f48
[   47.794669][   T68] FS:  0000000000000000(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   47.795265][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.795723][   T68] CR2: 00007f8eafb10520 CR3: 000000005694a001 CR4: 0000000000772ef0
[   47.796241][   T68] PKRU: 55555554
[   47.796513][   T68] Call Trace:
[   47.796790][   T68]  <TASK>
[ 47.796971][ T68] ? __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) 
[ 47.797406][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 47.797682][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 47.798044][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 47.798398][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 47.798759][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 47.799118][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 47.799462][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 47.799815][ T68] ? kthread (kernel/kthread.c:464) 
[ 47.800078][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 47.800422][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 47.800795][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 47.801162][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 47.801507][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 47.801894][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 47.802165][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 47.802528][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 47.802807][ T68] br_device_event (net/bridge/br.c:141) 
[ 47.803170][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 47.803527][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 47.803898][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 47.804332][ T68] ? 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) 
[ 47.804740][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 47.805162][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 47.805581][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 47.806014][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 47.806445][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 47.806803][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 47.807255][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 47.807602][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 47.808154][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 47.808822][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 47.809176][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 47.809521][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 47.809878][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 47.810230][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 47.810595][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 47.810983][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 47.811338][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 47.811690][ T68] kthread (kernel/kthread.c:464) 
[ 47.811959][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 47.812298][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 47.812647][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 47.813021][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 47.813350][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 47.813712][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 47.814063][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 47.814413][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   48.314149][   T68] ------------[ cut here ]------------
| [ 48.314522][ T68] WARNING: CPU: 2 PID: 68 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) 
| [   48.315132][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   48.316486][   T68] Tainted: [W]=WARN
[   48.316771][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   48.317211][   T68] Workqueue: netns cleanup_net
[ 48.317571][ T68] 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) 
[ 48.318124][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   48.319644][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[   48.320242][   T68] RAX: 0000000000000000 RBX: ffff88800b21a000 RCX: 0000000000000001
[   48.320940][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   48.321622][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[   48.322238][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[   48.322756][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800b21af48
[   48.323290][   T68] FS:  0000000000000000(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   48.323903][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.324336][   T68] CR2: 00007f15d9c49000 CR3: 000000005694a001 CR4: 0000000000772ef0
[   48.324861][   T68] PKRU: 55555554
[   48.325121][   T68] Call Trace:
[   48.325381][   T68]  <TASK>
[ 48.325561][ T68] ? __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) 
[ 48.325992][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 48.326257][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 48.326596][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 48.326962][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 48.327306][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 48.327660][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 48.327999][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 48.328338][ T68] ? kthread (kernel/kthread.c:464) 
[ 48.328595][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 48.328946][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 48.329293][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 48.329664][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 48.330010][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 48.330376][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 48.330675][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 48.331026][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 48.331291][ T68] br_device_event (net/bridge/br.c:141) 
[ 48.331641][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 48.331995][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 48.332343][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 48.332792][ T68] ? 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) 
[ 48.333141][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 48.333563][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 48.333990][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 48.334409][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 48.334850][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 48.335199][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 48.335649][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 48.336012][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 48.336351][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 48.336716][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 48.337071][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 48.337414][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 48.337779][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 48.338136][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 48.338504][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 48.338863][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 48.339215][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 48.339561][ T68] kthread (kernel/kthread.c:464) 
[ 48.339838][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 48.340178][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 48.340527][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 48.340898][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 48.341249][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 48.341592][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 48.341955][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 48.342301][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   59.620818][  T610] ------------[ cut here ]------------
| [ 59.621168][ T610] WARNING: CPU: 2 PID: 610 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) 
| [   59.622450][  T610] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   59.623577][  T610] Tainted: [W]=WARN
[   59.623829][  T610] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 59.624213][ T610] 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) 
[ 59.624537][ T610] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   59.625644][  T610] RSP: 0018:ffffc90000f4eef0 EFLAGS: 00010246
[   59.626039][  T610] RAX: 0000000000000000 RBX: ffff888002132000 RCX: 0000000000000001
[   59.626502][  T610] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   59.626973][  T610] RBP: ffffc90000f4efd8 R08: 0000000000000000 R09: 0000000000000000
[   59.627443][  T610] R10: ffffc90000f4f008 R11: ffffffff9238d1e0 R12: 1ffff920001e9de2
[   59.627914][  T610] R13: 00000000000005dc R14: ffffc90000f4f008 R15: ffff888002132f48
[   59.628382][  T610] FS:  00007f5a8e5a2800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   59.628952][  T610] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.629339][  T610] CR2: 00000000004e6888 CR3: 0000000010b3b005 CR4: 0000000000772ef0
[   59.629839][  T610] PKRU: 55555554
[   59.630086][  T610] Call Trace:
[   59.630319][  T610]  <TASK>
[ 59.630486][ T610] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 59.630821][ T610] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.631143][ T610] netif_set_mtu (net/core/dev.c:9652) 
[ 59.631456][ T610] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 59.631791][ T610] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 59.632031][ T610] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 59.632352][ T610] br_add_if (net/bridge/br_if.c:697) 
[ 59.632602][ T610] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 59.632922][ T610] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 59.633238][ T610] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 59.633549][ T610] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 59.633963][ T610] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 59.634277][ T610] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 59.634592][ T610] ? __kernel_text_address (kernel/extable.c:79) 
[ 59.634920][ T610] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.635240][ T610] ? __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) 
[ 59.635549][ T610] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 59.635945][ T610] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 59.636260][ T610] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 59.636569][ T610] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 59.636902][ T610] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 59.637215][ T610] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.637522][ T610] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 59.637872][ T610] ? __create_object (mm/kmemleak.c:771) 
[ 59.638189][ T610] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 59.638499][ T610] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 59.638818][ T610] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 59.639199][ T610] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 59.639524][ T610] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 59.639861][ T610] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 59.640180][ T610] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.640497][ T610] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.640835][ T610] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 59.641153][ T610] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 59.641466][ T610] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 59.641806][ T610] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 59.642117][ T610] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 59.642430][ T610] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.642753][ T610] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 59.643068][ T610] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 59.643378][ T610] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 59.643711][ T610] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 59.644025][ T610] ? 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) 
[ 59.644335][ T610] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 59.644664][ T610] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 59.644974][ T610] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.645289][ T610] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 59.645608][ T610] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 59.645929][ T610] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 59.646245][ T610] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 59.646562][ T610] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 59.646880][ T610] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 59.647309][ T610] ___sys_sendmsg (net/socket.c:2670) 
[ 59.647617][ T610] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 59.647941][ T610] ? __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) 
[ 59.648320][ T610] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 59.648687][ T610] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.649000][ T610] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 59.649319][ T610] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 59.649695][ T610] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 59.650018][ T610] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 59.650346][ T610] __sys_sendmsg (net/socket.c:2700) 
[ 59.650684][ T610] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 59.651076][ T610] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 59.651403][ T610] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 59.651731][ T610] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 59.652045][ T610] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   59.652423][  T610] RIP: 0033:0x7f5a8e76f1e7
[ 59.652765][ T610] 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)
[   59.653897][  T610] RSP: 002b:00007ffc9ee182d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   59.654374][  T610] RAX: ffffffffffffffda RBX: 00007ffc9ee18a10 RCX: 00007f5a8e76f1e7
[   59.654854][  T610] RDX: 0000000000000000 RSI: 00007ffc9ee18340 RDI: 0000000000000005
[   59.655321][  T610] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   59.655804][  T610] R10: 000000003718a910 R11: 0000000000000246 R12: 0000000000000005
[   59.656265][  T610] R13: 00000000686e70e7 R14: 0000000000499600 R15: 0000000000000000
| [   60.100459][  T613] ------------[ cut here ]------------
| [ 60.100804][ T613] WARNING: CPU: 1 PID: 613 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) 
| [   60.101448][  T613] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   60.102593][  T613] Tainted: [W]=WARN
[   60.102847][  T613] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 60.103246][ T613] 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) 
[ 60.103573][ T613] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   60.104873][  T613] RSP: 0018:ffffc90000f6f080 EFLAGS: 00010246
[   60.105279][  T613] RAX: 0000000000000000 RBX: ffff888002132000 RCX: 0000000000000001
[   60.105905][  T613] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   60.106383][  T613] RBP: ffffc90000f6f168 R08: 0000000000000000 R09: 0000000000000000
[   60.107004][  T613] R10: ffffc90000f6f198 R11: ffffffff92cceab8 R12: 1ffff920001ede14
[   60.107481][  T613] R13: 00000000000005dc R14: ffffc90000f6f198 R15: ffff888002132f48
[   60.108118][  T613] FS:  00007f0816956800(0000) GS:ffff8880d9019000(0000) knlGS:0000000000000000
[   60.108867][  T613] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   60.109272][  T613] CR2: 000000000043d940 CR3: 0000000010b3b004 CR4: 0000000000772ef0
[   60.109904][  T613] PKRU: 55555554
[   60.110148][  T613] Call Trace:
[   60.110384][  T613]  <TASK>
[ 60.110547][ T613] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 60.111042][ T613] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 60.111364][ T613] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 60.111807][ T613] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 60.112128][ T613] netif_set_mtu (net/core/dev.c:9652) 
[ 60.112447][ T613] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 60.112784][ T613] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 60.113182][ T613] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 60.113429][ T613] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 60.113768][ T613] br_add_if (net/bridge/br_if.c:697) 
[ 60.114021][ T613] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 60.114340][ T613] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 60.114674][ T613] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 60.114993][ T613] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 60.115306][ T613] ? __dev_get_by_name (net/core/dev.c:865) 
[ 60.115624][ T613] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 60.115955][ T613] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 60.116347][ T613] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 60.116677][ T613] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 60.117022][ T613] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 60.117367][ T613] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 60.117722][ T613] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 60.118072][ T613] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 60.118401][ T613] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 60.118747][ T613] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 60.119087][ T613] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 60.119421][ T613] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 60.119765][ T613] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 60.120100][ T613] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 60.120430][ T613] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 60.120780][ T613] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 60.121127][ T613] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 60.121459][ T613] ? 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) 
[ 60.121806][ T613] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 60.122150][ T613] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 60.122482][ T613] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 60.122836][ T613] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 60.123169][ T613] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 60.123506][ T613] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 60.123855][ T613] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 60.124191][ T613] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 60.124518][ T613] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 60.124954][ T613] ___sys_sendmsg (net/socket.c:2670) 
[ 60.125285][ T613] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 60.125619][ T613] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 60.125986][ T613] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 60.126317][ T613] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 60.126673][ T613] ? __handle_mm_fault (mm/memory.c:6212) 
[ 60.127009][ T613] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 60.127337][ T613] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 60.127701][ T613] __sys_sendmsg (net/socket.c:2700) 
[ 60.128041][ T613] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 60.128377][ T613] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 60.128728][ T613] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 60.129062][ T613] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 60.129401][ T613] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 60.129745][ T613] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   60.130161][  T613] RIP: 0033:0x7f0816b231e7
[ 60.130505][ T613] 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)
[   60.131749][  T613] RSP: 002b:00007ffe97482468 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   60.132251][  T613] RAX: ffffffffffffffda RBX: 00007ffe97482ba0 RCX: 00007f0816b231e7
[   60.132759][  T613] RDX: 0000000000000000 RSI: 00007ffe974824d0 RDI: 0000000000000005
[   60.133257][  T613] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[   60.133760][  T613] R10: 00007f0816bb1ac0 R11: 0000000000000246 R12: 00007ffe97482bd8
[   60.134260][  T613] R13: 00000000686e70e7 R14: 0000000000499600 R15: 00007ffe974825c0
| [   62.156098][  T630] ------------[ cut here ]------------
| [ 62.156543][ T630] WARNING: CPU: 2 PID: 630 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) 
| [   62.157162][  T630] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   62.158578][  T630] Tainted: [W]=WARN
[   62.158825][  T630] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 62.159209][ T630] 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) 
[ 62.159525][ T630] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   62.160613][  T630] RSP: 0018:ffffc9000106eef0 EFLAGS: 00010246
[   62.161012][  T630] RAX: 0000000000000000 RBX: ffff88800ce6a000 RCX: 0000000000000001
[   62.161466][  T630] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   62.161973][  T630] RBP: ffffc9000106efd8 R08: 0000000000000000 R09: 0000000000000000
[   62.162433][  T630] R10: ffffc9000106f008 R11: ffffffff9238d1e0 R12: 1ffff9200020dde2
[   62.162894][  T630] R13: 00000000000005dc R14: ffffc9000106f008 R15: ffff88800ce6af48
[   62.163346][  T630] FS:  00007fb6e9bc9800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   62.163884][  T630] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.164273][  T630] CR2: 00000000004e6888 CR3: 0000000010f2b003 CR4: 0000000000772ef0
[   62.164742][  T630] PKRU: 55555554
[   62.164977][  T630] Call Trace:
[   62.165210][  T630]  <TASK>
[ 62.165376][ T630] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 62.165706][ T630] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.166031][ T630] netif_set_mtu (net/core/dev.c:9652) 
[ 62.166340][ T630] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 62.166682][ T630] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 62.166919][ T630] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 62.167233][ T630] br_add_if (net/bridge/br_if.c:697) 
[ 62.167481][ T630] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 62.167798][ T630] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 62.168111][ T630] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 62.168421][ T630] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 62.168824][ T630] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 62.169130][ T630] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 62.169440][ T630] ? __kernel_text_address (kernel/extable.c:79) 
[ 62.169773][ T630] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.170092][ T630] ? __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) 
[ 62.170403][ T630] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 62.170812][ T630] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 62.171131][ T630] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 62.171441][ T630] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 62.171763][ T630] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 62.172079][ T630] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 62.172388][ T630] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 62.172705][ T630] ? __create_object (mm/kmemleak.c:771) 
[ 62.173015][ T630] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 62.173332][ T630] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 62.173668][ T630] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 62.174054][ T630] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 62.174369][ T630] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 62.174695][ T630] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 62.175002][ T630] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.175320][ T630] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 62.175638][ T630] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 62.175953][ T630] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 62.176265][ T630] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 62.176576][ T630] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 62.176896][ T630] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 62.177209][ T630] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.177524][ T630] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 62.177853][ T630] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 62.178172][ T630] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 62.178493][ T630] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 62.178810][ T630] ? 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) 
[ 62.179119][ T630] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 62.179430][ T630] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 62.179789][ T630] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.180106][ T630] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 62.180416][ T630] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 62.180752][ T630] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 62.181071][ T630] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 62.181383][ T630] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 62.181708][ T630] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 62.182100][ T630] ___sys_sendmsg (net/socket.c:2670) 
[ 62.182406][ T630] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 62.182722][ T630] ? __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) 
[ 62.183113][ T630] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 62.183421][ T630] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 62.183741][ T630] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.184051][ T630] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 62.184359][ T630] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 62.184676][ T630] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 62.184996][ T630] __sys_sendmsg (net/socket.c:2700) 
[ 62.185308][ T630] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 62.185707][ T630] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 62.186032][ T630] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 62.186339][ T630] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 62.186658][ T630] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   62.187038][  T630] RIP: 0033:0x7fb6e9d961e7
[ 62.187354][ T630] 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)
[   62.188427][  T630] RSP: 002b:00007ffdaa2f2bb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   62.188897][  T630] RAX: ffffffffffffffda RBX: 00007ffdaa2f32f0 RCX: 00007fb6e9d961e7
[   62.189376][  T630] RDX: 0000000000000000 RSI: 00007ffdaa2f2c20 RDI: 0000000000000005
[   62.189863][  T630] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   62.190327][  T630] R10: 000000001ce23910 R11: 0000000000000246 R12: 0000000000000005
[   62.190805][  T630] R13: 00000000686e70e9 R14: 0000000000499600 R15: 0000000000000000
| [   62.584703][  T633] ------------[ cut here ]------------
| [ 62.585068][ T633] WARNING: CPU: 2 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) 
| [   62.585742][  T633] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   62.586872][  T633] Tainted: [W]=WARN
[   62.587115][  T633] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 62.587504][ 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) 
[ 62.587839][ T633] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   62.588955][  T633] RSP: 0018:ffffc9000108f080 EFLAGS: 00010246
[   62.589355][  T633] RAX: 0000000000000000 RBX: ffff88800ce6a000 RCX: 0000000000000001
[   62.589827][  T633] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   62.590295][  T633] RBP: ffffc9000108f168 R08: 0000000000000000 R09: 0000000000000000
[   62.590788][  T633] R10: ffffc9000108f198 R11: ffffffff9238d1e0 R12: 1ffff92000211e14
[   62.591257][  T633] R13: 00000000000005dc R14: ffffc9000108f198 R15: ffff88800ce6af48
[   62.591733][  T633] FS:  00007f07802a0800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[   62.592277][  T633] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.592689][  T633] CR2: 00007f07803a0130 CR3: 0000000010f79003 CR4: 0000000000772ef0
[   62.593164][  T633] PKRU: 55555554
[   62.593406][  T633] Call Trace:
[   62.593662][  T633]  <TASK>
[ 62.593830][ T633] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 62.594147][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.594474][ T633] netif_set_mtu (net/core/dev.c:9652) 
[ 62.594799][ T633] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 62.595126][ T633] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 62.595376][ T633] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 62.595706][ T633] br_add_if (net/bridge/br_if.c:697) 
[ 62.595962][ T633] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 62.596273][ T633] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 62.596590][ T633] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 62.596931][ T633] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 62.597253][ T633] ? __dev_get_by_name (net/core/dev.c:865) 
[ 62.597568][ T633] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 62.597897][ T633] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 62.598221][ T633] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 62.598534][ T633] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 62.598863][ T633] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 62.599192][ T633] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 62.599517][ T633] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 62.599857][ T633] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 62.600173][ T633] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 62.600492][ T633] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 62.600835][ T633] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 62.601184][ T633] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 62.601505][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.601837][ T633] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 62.602159][ T633] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 62.602473][ T633] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 62.602812][ T633] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 62.603128][ 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) 
[ 62.603444][ T633] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 62.603772][ T633] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 62.604089][ T633] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 62.604409][ T633] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 62.604751][ T633] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 62.605078][ T633] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 62.605399][ T633] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 62.605726][ T633] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 62.606039][ T633] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 62.606437][ T633] ___sys_sendmsg (net/socket.c:2670) 
[ 62.606764][ T633] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 62.607077][ T633] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 62.607397][ T633] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 62.607719][ T633] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 62.608042][ T633] ? __handle_mm_fault (mm/memory.c:6212) 
[ 62.608354][ T633] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 62.608686][ T633] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 62.609027][ T633] __sys_sendmsg (net/socket.c:2700) 
[ 62.609345][ T633] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 62.609669][ T633] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 62.609992][ T633] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 62.610308][ T633] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 62.610646][ T633] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 62.610967][ T633] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   62.611355][  T633] RIP: 0033:0x7f078046d1e7
[ 62.611693][ 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)
[   62.612807][  T633] RSP: 002b:00007ffceec98b98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   62.613277][  T633] RAX: ffffffffffffffda RBX: 00007ffceec992d0 RCX: 00007f078046d1e7
[   62.613762][  T633] RDX: 0000000000000000 RSI: 00007ffceec98c00 RDI: 0000000000000005
[   62.614226][  T633] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[   62.614700][  T633] R10: 00007f07804fbac0 R11: 0000000000000246 R12: 00007ffceec99308
[   62.615166][  T633] R13: 00000000686e70ea R14: 0000000000499600 R15: 00007ffceec98cf0
| [   74.169513][   T68] ------------[ cut here ]------------
| [ 74.169832][ T68] WARNING: CPU: 0 PID: 68 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) 
| [   74.170341][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   74.171482][   T68] Tainted: [W]=WARN
[   74.171718][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   74.172087][   T68] Workqueue: netns cleanup_net
[ 74.172396][ T68] 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) 
[ 74.172713][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   74.173960][   T68] RSP: 0000:ffffc900004975b0 EFLAGS: 00010246
[   74.174333][   T68] RAX: 0000000000000000 RBX: ffff888002132000 RCX: 0000000000000001
[   74.175068][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   74.175508][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[   74.176086][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[   74.176530][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff888002132f48
[   74.177119][   T68] FS:  0000000000000000(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[   74.177744][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.178112][   T68] CR2: 0000000000406141 CR3: 0000000011c0e006 CR4: 0000000000772ef0
[   74.178554][   T68] PKRU: 55555554
[   74.178783][   T68] Call Trace:
[   74.179003][   T68]  <TASK>
[ 74.179150][ T68] ? __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) 
[ 74.179513][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 74.179747][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 74.180039][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 74.180331][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 74.180643][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 74.180934][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 74.181223][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 74.181511][ T68] ? kthread (kernel/kthread.c:464) 
[ 74.181741][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 74.182031][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 74.182326][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 74.182648][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 74.182949][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 74.183255][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 74.183479][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 74.183787][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 74.184013][ T68] br_device_event (net/bridge/br.c:141) 
[ 74.184306][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 74.184608][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 74.184919][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 74.185289][ T68] ? 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) 
[ 74.185579][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 74.185945][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 74.186302][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 74.186670][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 74.187043][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 74.187333][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 74.187712][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 74.188006][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 74.188296][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 74.188593][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 74.188900][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 74.189192][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 74.189483][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 74.189789][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 74.190086][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 74.190378][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 74.190693][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 74.190988][ T68] kthread (kernel/kthread.c:464) 
[ 74.191213][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 74.191498][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 74.191792][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 74.192087][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 74.192375][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 74.192673][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 74.192962][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 74.193258][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   74.631494][   T68] ------------[ cut here ]------------
| [ 74.631820][ T68] WARNING: CPU: 0 PID: 68 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) 
| [   74.632331][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   74.633456][   T68] Tainted: [W]=WARN
[   74.633695][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   74.634069][   T68] Workqueue: netns cleanup_net
[ 74.634377][ T68] 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) 
[ 74.634696][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   74.635745][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[   74.636116][   T68] RAX: 0000000000000000 RBX: ffff88800ce6a000 RCX: 0000000000000001
[   74.636555][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   74.637002][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[   74.637436][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[   74.637878][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800ce6af48
[   74.638312][   T68] FS:  0000000000000000(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[   74.638838][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.639210][   T68] CR2: 00007f50b310f000 CR3: 000000005694a005 CR4: 0000000000772ef0
[   74.639656][   T68] PKRU: 55555554
[   74.639876][   T68] Call Trace:
[   74.640093][   T68]  <TASK>
[ 74.640240][ T68] ? __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) 
[ 74.640613][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 74.640845][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 74.641137][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 74.641432][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 74.641727][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 74.642016][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 74.642300][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 74.642591][ T68] ? kthread (kernel/kthread.c:464) 
[ 74.642819][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 74.643110][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 74.643400][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 74.643711][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 74.644006][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 74.644316][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 74.644538][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 74.644847][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 74.645070][ T68] br_device_event (net/bridge/br.c:141) 
[ 74.645359][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 74.645666][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 74.645961][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 74.646334][ T68] ? 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) 
[ 74.646635][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 74.647000][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 74.647358][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 74.647728][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 74.648098][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 74.648388][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 74.648767][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 74.649065][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 74.649357][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 74.649663][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 74.649963][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 74.650255][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 74.650548][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 74.650865][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 74.651170][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 74.651465][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 74.651778][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 74.652072][ T68] kthread (kernel/kthread.c:464) 
[ 74.652293][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 74.652582][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 74.652879][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 74.653172][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 74.653463][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 74.653766][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 74.654055][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 74.654346][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   85.919265][  T800] ------------[ cut here ]------------
| [ 85.919577][ T800] WARNING: CPU: 0 PID: 800 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) 
| [   85.920182][  T800] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   85.921280][  T800] Tainted: [W]=WARN
[   85.921510][  T800] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 85.921908][ T800] 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) 
[ 85.922222][ T800] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   85.923300][  T800] RSP: 0018:ffffc900016ceef0 EFLAGS: 00010246
[   85.923686][  T800] RAX: 0000000000000000 RBX: ffff888002132000 RCX: 0000000000000001
[   85.924143][  T800] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   85.924591][  T800] RBP: ffffc900016cefd8 R08: 0000000000000000 R09: 0000000000000000
[   85.925049][  T800] R10: ffffc900016cf008 R11: ffffffff9238d1e0 R12: 1ffff920002d9de2
[   85.925495][  T800] R13: 00000000000005dc R14: ffffc900016cf008 R15: ffff888002132f48
[   85.925962][  T800] FS:  00007f8164c43800(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[   85.926496][  T800] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   85.926886][  T800] CR2: 00000000004e6888 CR3: 0000000010a15002 CR4: 0000000000772ef0
[   85.927341][  T800] PKRU: 55555554
[   85.927570][  T800] Call Trace:
[   85.927804][  T800]  <TASK>
[ 85.927960][ T800] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 85.928262][ T800] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 85.928585][ T800] netif_set_mtu (net/core/dev.c:9652) 
[ 85.928914][ T800] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 85.929230][ T800] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 85.929457][ T800] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 85.929780][ T800] br_add_if (net/bridge/br_if.c:697) 
[ 85.930024][ T800] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 85.930322][ T800] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 85.930649][ T800] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 85.930962][ T800] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 85.931343][ T800] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 85.931654][ T800] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 85.931953][ T800] ? __kernel_text_address (kernel/extable.c:79) 
[ 85.932251][ T800] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 85.932552][ T800] ? __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) 
[ 85.932860][ T800] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 85.933234][ T800] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 85.933532][ T800] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 85.933847][ T800] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 85.934145][ T800] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 85.934445][ T800] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 85.934753][ T800] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 85.935048][ T800] ? __create_object (mm/kmemleak.c:771) 
[ 85.935353][ T800] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 85.935668][ T800] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 85.935967][ T800] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 85.936335][ T800] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 85.936651][ T800] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 85.936956][ T800] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 85.937254][ T800] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 85.937557][ T800] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 85.937881][ T800] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 85.938185][ T800] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 85.938483][ T800] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 85.938786][ T800] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 85.939087][ T800] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 85.939391][ T800] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 85.939702][ T800] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 85.939999][ T800] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 85.940300][ T800] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 85.940615][ T800] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 85.940925][ T800] ? 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) 
[ 85.941225][ T800] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 85.941525][ T800] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 85.941838][ T800] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 85.942150][ T800] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 85.942450][ T800] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 85.942755][ T800] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 85.943059][ T800] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 85.943361][ T800] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 85.943664][ T800] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 85.944049][ T800] ___sys_sendmsg (net/socket.c:2670) 
[ 85.944342][ T800] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 85.944656][ T800] ? __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) 
[ 85.945028][ T800] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 85.945330][ T800] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 85.945654][ T800] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 85.945960][ T800] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 85.946255][ T800] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 85.946616][ T800] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 85.946955][ T800] __sys_sendmsg (net/socket.c:2700) 
[ 85.947270][ T800] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 85.947666][ T800] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 85.947994][ T800] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 85.948308][ T800] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 85.948638][ T800] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   85.949043][  T800] RIP: 0033:0x7f8164e101e7
[ 85.949373][ T800] 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)
[   85.950762][  T800] RSP: 002b:00007fff0c23c8c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   85.951243][  T800] RAX: ffffffffffffffda RBX: 00007fff0c23d000 RCX: 00007f8164e101e7
[   85.951949][  T800] RDX: 0000000000000000 RSI: 00007fff0c23c930 RDI: 0000000000000005
[   85.952422][  T800] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   85.952903][  T800] R10: 0000000015efc910 R11: 0000000000000246 R12: 0000000000000005
[   85.953590][  T800] R13: 00000000686e7101 R14: 0000000000499600 R15: 0000000000000000
| [   86.348435][  T803] ------------[ cut here ]------------
| [ 86.349017][ T803] WARNING: CPU: 3 PID: 803 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) 
| [   86.349620][  T803] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   86.350789][  T803] Tainted: [W]=WARN
[   86.351022][  T803] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 86.351405][ T803] 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) 
[ 86.351733][ T803] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   86.352840][  T803] RSP: 0018:ffffc900016ff080 EFLAGS: 00010246
[   86.353232][  T803] RAX: 0000000000000000 RBX: ffff888002132000 RCX: 0000000000000001
[   86.353704][  T803] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   86.354167][  T803] RBP: ffffc900016ff168 R08: 0000000000000000 R09: 0000000000000000
[   86.354621][  T803] R10: ffffc900016ff198 R11: ffffffff92cceab8 R12: 1ffff920002dfe14
[   86.355086][  T803] R13: 00000000000005dc R14: ffffc900016ff198 R15: ffff888002132f48
[   86.355540][  T803] FS:  00007f155a137800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[   86.356091][  T803] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   86.356477][  T803] CR2: 000000000043d940 CR3: 0000000011c05003 CR4: 0000000000772ef0
[   86.356948][  T803] PKRU: 55555554
[   86.357180][  T803] Call Trace:
[   86.357409][  T803]  <TASK>
[ 86.357567][ T803] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 86.357889][ T803] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 86.358202][ T803] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 86.358580][ T803] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 86.358896][ T803] netif_set_mtu (net/core/dev.c:9652) 
[ 86.359203][ T803] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 86.359519][ T803] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 86.359917][ T803] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 86.360150][ T803] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 86.360463][ T803] br_add_if (net/bridge/br_if.c:697) 
[ 86.360725][ T803] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 86.361031][ T803] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 86.361341][ T803] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 86.361665][ T803] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 86.361970][ T803] ? __dev_get_by_name (net/core/dev.c:865) 
[ 86.362275][ T803] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 86.362584][ T803] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 86.362905][ T803] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 86.363210][ T803] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 86.363522][ T803] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 86.363854][ T803] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 86.364170][ T803] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 86.364489][ T803] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 86.364809][ T803] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 86.365126][ T803] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 86.365432][ T803] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 86.365750][ T803] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 86.366061][ T803] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 86.366375][ T803] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 86.366695][ T803] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 86.367002][ T803] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 86.367328][ T803] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 86.367645][ T803] ? 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) 
[ 86.367952][ T803] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 86.368264][ T803] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 86.368569][ T803] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 86.368893][ T803] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 86.369203][ T803] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 86.369517][ T803] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 86.369846][ T803] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 86.370156][ T803] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 86.370457][ T803] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 86.370878][ T803] ___sys_sendmsg (net/socket.c:2670) 
[ 86.371187][ T803] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 86.371494][ T803] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 86.371837][ T803] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 86.372143][ T803] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 86.372451][ T803] ? __handle_mm_fault (mm/memory.c:6212) 
[ 86.372777][ T803] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 86.373079][ T803] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 86.373403][ T803] __sys_sendmsg (net/socket.c:2700) 
[ 86.373723][ T803] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 86.374036][ T803] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 86.374347][ T803] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 86.374664][ T803] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 86.374974][ T803] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 86.375281][ T803] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   86.375667][  T803] RIP: 0033:0x7f155a3041e7
[ 86.375984][ T803] 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)
[   86.377088][  T803] RSP: 002b:00007ffea3a482f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   86.377558][  T803] RAX: ffffffffffffffda RBX: 00007ffea3a48a30 RCX: 00007f155a3041e7
[   86.378027][  T803] RDX: 0000000000000000 RSI: 00007ffea3a48360 RDI: 0000000000000005
[   86.378489][  T803] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[   86.378953][  T803] R10: 00007f155a392ac0 R11: 0000000000000246 R12: 00007ffea3a48a68
[   86.379409][  T803] R13: 00000000686e7101 R14: 0000000000499600 R15: 00007ffea3a48450
| [   88.426328][  T820] ------------[ cut here ]------------
| [ 88.426651][ T820] WARNING: CPU: 3 PID: 820 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) 
| [   88.427236][  T820] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   88.428305][  T820] Tainted: [W]=WARN
[   88.428530][  T820] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 88.428921][ T820] 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) 
[ 88.429227][ T820] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   88.430297][  T820] RSP: 0018:ffffc900017eeef0 EFLAGS: 00010246
[   88.430689][  T820] RAX: 0000000000000000 RBX: ffff88800c0f2000 RCX: 0000000000000001
[   88.431134][  T820] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   88.431576][  T820] RBP: ffffc900017eefd8 R08: 0000000000000000 R09: 0000000000000000
[   88.432030][  T820] R10: ffffc900017ef008 R11: ffffffff9238d1e0 R12: 1ffff920002fdde2
[   88.432473][  T820] R13: 00000000000005dc R14: ffffc900017ef008 R15: ffff88800c0f2f48
[   88.432936][  T820] FS:  00007fe63745e800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[   88.433452][  T820] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   88.433833][  T820] CR2: 00000000004e6888 CR3: 000000000a146003 CR4: 0000000000772ef0
[   88.434284][  T820] PKRU: 55555554
[   88.434507][  T820] Call Trace:
[   88.434737][  T820]  <TASK>
[ 88.434892][ T820] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 88.435188][ T820] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.435498][ T820] netif_set_mtu (net/core/dev.c:9652) 
[ 88.435820][ T820] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 88.436135][ T820] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 88.436363][ T820] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 88.436684][ T820] br_add_if (net/bridge/br_if.c:697) 
[ 88.436922][ T820] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 88.437220][ T820] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 88.437521][ T820] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 88.437832][ T820] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 88.438211][ T820] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 88.438513][ T820] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 88.438822][ T820] ? __kernel_text_address (kernel/extable.c:79) 
[ 88.439124][ T820] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.439426][ T820] ? __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) 
[ 88.439735][ T820] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 88.440105][ T820] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 88.440407][ T820] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 88.440740][ T820] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 88.441040][ T820] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 88.441342][ T820] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 88.441653][ T820] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 88.441951][ T820] ? __create_object (mm/kmemleak.c:771) 
[ 88.442247][ T820] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 88.442544][ T820] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 88.442857][ T820] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 88.443225][ T820] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 88.443526][ T820] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 88.443837][ T820] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 88.444134][ T820] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.444434][ T820] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 88.444747][ T820] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 88.445046][ T820] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 88.445344][ T820] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 88.445653][ T820] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 88.445953][ T820] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 88.446252][ T820] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.446553][ T820] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 88.446862][ T820] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 88.447159][ T820] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 88.447474][ T820] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 88.447778][ T820] ? 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) 
[ 88.448077][ T820] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 88.448379][ T820] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 88.448691][ T820] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.448994][ T820] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 88.449294][ T820] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 88.449594][ T820] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 88.449904][ T820] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 88.450202][ T820] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 88.450494][ T820] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 88.450893][ T820] ___sys_sendmsg (net/socket.c:2670) 
[ 88.451194][ T820] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 88.451487][ T820] ? __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) 
[ 88.451873][ T820] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 88.452177][ T820] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 88.452473][ T820] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.452792][ T820] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 88.453092][ T820] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 88.453387][ T820] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 88.453701][ T820] __sys_sendmsg (net/socket.c:2700) 
[ 88.453999][ T820] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 88.454375][ T820] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 88.454694][ T820] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 88.454993][ T820] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 88.455291][ T820] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   88.455663][  T820] RIP: 0033:0x7fe63762b1e7
[ 88.455969][ T820] 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)
[   88.457042][  T820] RSP: 002b:00007ffc584f2af8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   88.457496][  T820] RAX: ffffffffffffffda RBX: 00007ffc584f3230 RCX: 00007fe63762b1e7
[   88.458162][  T820] RDX: 0000000000000000 RSI: 00007ffc584f2b60 RDI: 0000000000000005
[   88.458608][  T820] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   88.459273][  T820] R10: 0000000040455910 R11: 0000000000000246 R12: 0000000000000005
[   88.459726][  T820] R13: 00000000686e7103 R14: 0000000000499600 R15: 0000000000000000
| [   88.846859][  T823] ------------[ cut here ]------------
| [ 88.847170][ T823] WARNING: CPU: 3 PID: 823 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) 
| [   88.847787][  T823] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [   88.848913][  T823] Tainted: [W]=WARN
[   88.849146][  T823] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 88.849528][ T823] 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) 
[ 88.849851][ T823] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[   88.850973][  T823] RSP: 0018:ffffc9000180f080 EFLAGS: 00010246
[   88.851362][  T823] RAX: 0000000000000000 RBX: ffff88800c0f2000 RCX: 0000000000000001
[   88.851829][  T823] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[   88.852286][  T823] RBP: ffffc9000180f168 R08: 0000000000000000 R09: 0000000000000000
[   88.852772][  T823] R10: ffffc9000180f198 R11: ffffffff9238d1e0 R12: 1ffff92000301e14
[   88.853230][  T823] R13: 00000000000005dc R14: ffffc9000180f198 R15: ffff88800c0f2f48
[   88.853693][  T823] FS:  00007f6a9203b800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[   88.854230][  T823] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   88.854616][  T823] CR2: 000000000043d940 CR3: 0000000004fd5002 CR4: 0000000000772ef0
[   88.855091][  T823] PKRU: 55555554
[   88.855323][  T823] Call Trace:
[   88.855550][  T823]  <TASK>
[ 88.855717][ T823] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 88.856025][ T823] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.856344][ T823] netif_set_mtu (net/core/dev.c:9652) 
[ 88.856676][ T823] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 88.857011][ T823] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 88.857245][ T823] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 88.857552][ T823] br_add_if (net/bridge/br_if.c:697) 
[ 88.857803][ T823] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 88.858107][ T823] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 88.858416][ T823] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 88.858734][ T823] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 88.859047][ T823] ? __dev_get_by_name (net/core/dev.c:865) 
[ 88.859358][ T823] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 88.859673][ T823] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 88.859984][ T823] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 88.860289][ T823] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 88.860606][ T823] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 88.860949][ T823] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 88.861262][ T823] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 88.861581][ T823] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 88.861893][ T823] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 88.862208][ T823] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 88.862512][ T823] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 88.862832][ T823] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 88.863143][ T823] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.863454][ T823] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 88.863771][ T823] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 88.864088][ T823] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 88.864404][ T823] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 88.864732][ T823] ? 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) 
[ 88.865040][ T823] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 88.865347][ T823] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 88.865661][ T823] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 88.865971][ T823] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 88.866284][ T823] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 88.866589][ T823] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 88.866914][ T823] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 88.867223][ T823] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 88.867526][ T823] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 88.867928][ T823] ___sys_sendmsg (net/socket.c:2670) 
[ 88.868235][ T823] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 88.868542][ T823] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 88.868871][ T823] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 88.869180][ T823] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 88.869486][ T823] ? __handle_mm_fault (mm/memory.c:6212) 
[ 88.869798][ T823] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 88.870101][ T823] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 88.870432][ T823] __sys_sendmsg (net/socket.c:2700) 
[ 88.870758][ T823] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 88.871063][ T823] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 88.871374][ T823] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 88.871692][ T823] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 88.872020][ T823] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 88.872327][ T823] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   88.872734][  T823] RIP: 0033:0x7f6a922081e7
[ 88.873060][ T823] 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)
[   88.874160][  T823] RSP: 002b:00007ffff80c59b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   88.874620][  T823] RAX: ffffffffffffffda RBX: 00007ffff80c60f0 RCX: 00007f6a922081e7
[   88.875091][  T823] RDX: 0000000000000000 RSI: 00007ffff80c5a20 RDI: 0000000000000005
[   88.875552][  T823] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[   88.876042][  T823] R10: 00007f6a92296ac0 R11: 0000000000000246 R12: 00007ffff80c6128
[   88.876508][  T823] R13: 00000000686e7104 R14: 0000000000499600 R15: 00007ffff80c5b10
| [  116.822962][   T68] ------------[ cut here ]------------
| [ 116.823265][ T68] WARNING: CPU: 1 PID: 68 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) 
| [  116.823796][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  116.824965][   T68] Tainted: [W]=WARN
[  116.825191][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  116.825609][   T68] Workqueue: netns cleanup_net
[ 116.825932][ T68] 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) 
[ 116.826237][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  116.827302][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  116.827687][   T68] RAX: 0000000000000000 RBX: ffff888002132000 RCX: 0000000000000001
[  116.828131][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  116.828577][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  116.829162][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  116.829611][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff888002132f48
[  116.830186][   T68] FS:  0000000000000000(0000) GS:ffff8880d9019000(0000) knlGS:0000000000000000
[  116.830750][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.831124][   T68] CR2: 00007f8eafb10520 CR3: 000000005694a004 CR4: 0000000000772ef0
[  116.831566][   T68] PKRU: 55555554
[  116.831798][   T68] Call Trace:
[  116.832020][   T68]  <TASK>
[ 116.832167][ T68] ? __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) 
[ 116.832533][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 116.832765][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 116.833053][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 116.833347][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 116.833647][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 116.833942][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 116.834240][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 116.834536][ T68] ? kthread (kernel/kthread.c:464) 
[ 116.834769][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 116.835066][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 116.835374][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 116.835689][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 116.835982][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 116.836297][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 116.836522][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 116.836838][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 116.837066][ T68] br_device_event (net/bridge/br.c:141) 
[ 116.837360][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 116.837682][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 116.837983][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 116.838359][ T68] ? 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) 
[ 116.838661][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 116.839134][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 116.839501][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 116.839871][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 116.840245][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 116.840533][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 116.840929][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 116.841230][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 116.841516][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 116.841821][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 116.842112][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 116.842403][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 116.842709][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 116.843018][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 116.843323][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 116.843613][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 116.843919][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 116.844208][ T68] kthread (kernel/kthread.c:464) 
[ 116.844425][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 116.844717][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 116.845004][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 116.845299][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 116.845586][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 116.845883][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 116.846169][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 116.846459][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  117.322450][   T68] ------------[ cut here ]------------
| [ 117.323238][ T68] WARNING: CPU: 0 PID: 68 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) 
| [  117.323802][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  117.325009][   T68] Tainted: [W]=WARN
[  117.325256][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  117.325659][   T68] Workqueue: netns cleanup_net
[ 117.325985][ T68] 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) 
[ 117.326307][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  117.327430][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  117.327838][   T68] RAX: 0000000000000000 RBX: ffff88800c0f2000 RCX: 0000000000000001
[  117.328308][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  117.328784][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  117.329258][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  117.329743][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800c0f2f48
[  117.330209][   T68] FS:  0000000000000000(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[  117.330779][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  117.331166][   T68] CR2: 00007fbfa3791270 CR3: 000000000fa9c005 CR4: 0000000000772ef0
[  117.331649][   T68] PKRU: 55555554
[  117.331889][   T68] Call Trace:
[  117.332122][   T68]  <TASK>
[ 117.332284][ T68] ? __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) 
[ 117.332689][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 117.332925][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 117.333294][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 117.333606][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 117.333912][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 117.334210][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 117.334511][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 117.334822][ T68] ? kthread (kernel/kthread.c:464) 
[ 117.335049][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 117.335349][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 117.335659][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 117.335981][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 117.336304][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 117.336621][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 117.336859][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 117.337168][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 117.337397][ T68] br_device_event (net/bridge/br.c:141) 
[ 117.337707][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 117.338018][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 117.338324][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 117.338714][ T68] ? 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) 
[ 117.339014][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 117.339393][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 117.339770][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 117.340141][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 117.340516][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 117.340831][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 117.341211][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 117.341522][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 117.341826][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 117.342132][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 117.342431][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 117.342753][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 117.343063][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 117.343374][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 117.343693][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 117.344004][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 117.344313][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 117.344616][ T68] kthread (kernel/kthread.c:464) 
[ 117.344857][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 117.345157][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 117.345456][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 117.345770][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 117.346072][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 117.346383][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 117.346691][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 117.346986][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  128.560147][ T1068] ------------[ cut here ]------------
| [ 128.560477][ T1068] WARNING: CPU: 0 PID: 1068 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) 
| [  128.561141][ T1068] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  128.562267][ T1068] Tainted: [W]=WARN
[  128.562504][ T1068] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 128.562904][ T1068] 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) 
[ 128.563225][ T1068] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  128.564351][ T1068] RSP: 0018:ffffc9000202eef0 EFLAGS: 00010246
[  128.564773][ T1068] RAX: 0000000000000000 RBX: ffff88800679a000 RCX: 0000000000000001
[  128.565260][ T1068] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  128.565761][ T1068] RBP: ffffc9000202efd8 R08: 0000000000000000 R09: 0000000000000000
[  128.566244][ T1068] R10: ffffc9000202f008 R11: ffffffff9238d1e0 R12: 1ffff92000405de2
[  128.566733][ T1068] R13: 00000000000005dc R14: ffffc9000202f008 R15: ffff88800679af48
[  128.567198][ T1068] FS:  00007fe9cca6a800(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[  128.567762][ T1068] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  128.568164][ T1068] CR2: 00000000004e6888 CR3: 0000000010de7004 CR4: 0000000000772ef0
[  128.568618][ T1068] PKRU: 55555554
[  128.568868][ T1068] Call Trace:
[  128.569092][ T1068]  <TASK>
[ 128.569246][ T1068] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 128.569564][ T1068] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.569907][ T1068] netif_set_mtu (net/core/dev.c:9652) 
[ 128.570222][ T1068] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 128.570541][ T1068] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 128.570795][ T1068] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 128.571118][ T1068] br_add_if (net/bridge/br_if.c:697) 
[ 128.571371][ T1068] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 128.571703][ T1068] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 128.572024][ T1068] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 128.572332][ T1068] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 128.572740][ T1068] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 128.573035][ T1068] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 128.573330][ T1068] ? __kernel_text_address (kernel/extable.c:79) 
[ 128.573644][ T1068] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.573974][ T1068] ? __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) 
[ 128.574301][ T1068] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 128.574691][ T1068] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 128.575003][ T1068] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 128.575311][ T1068] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 128.575637][ T1068] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 128.575947][ T1068] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 128.576263][ T1068] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 128.576566][ T1068] ? __create_object (mm/kmemleak.c:771) 
[ 128.576877][ T1068] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 128.577183][ T1068] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 128.577490][ T1068] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 128.577896][ T1068] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 128.578226][ T1068] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 128.578560][ T1068] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 128.578907][ T1068] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.579237][ T1068] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 128.579537][ T1068] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 128.579857][ T1068] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 128.580166][ T1068] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 128.580468][ T1068] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 128.580821][ T1068] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 128.581148][ T1068] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.581481][ T1068] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 128.581818][ T1068] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 128.582144][ T1068] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 128.582477][ T1068] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 128.582796][ T1068] ? 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) 
[ 128.583101][ T1068] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 128.583399][ T1068] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 128.583729][ T1068] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.584048][ T1068] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 128.584366][ T1068] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 128.584699][ T1068] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 128.585015][ T1068] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 128.585330][ T1068] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 128.585649][ T1068] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 128.586061][ T1068] ___sys_sendmsg (net/socket.c:2670) 
[ 128.586368][ T1068] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 128.586684][ T1068] ? __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) 
[ 128.587065][ T1068] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 128.587372][ T1068] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 128.587687][ T1068] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.588000][ T1068] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 128.588310][ T1068] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 128.588618][ T1068] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 128.588933][ T1068] __sys_sendmsg (net/socket.c:2700) 
[ 128.589225][ T1068] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 128.589591][ T1068] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 128.589917][ T1068] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 128.590225][ T1068] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 128.590529][ T1068] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  128.590927][ T1068] RIP: 0033:0x7fe9ccc371e7
[ 128.591232][ T1068] 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)
[  128.592339][ T1068] RSP: 002b:00007ffe84658578 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  128.592829][ T1068] RAX: ffffffffffffffda RBX: 00007ffe84658cb0 RCX: 00007fe9ccc371e7
[  128.593295][ T1068] RDX: 0000000000000000 RSI: 00007ffe846585e0 RDI: 0000000000000005
[  128.593759][ T1068] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[  128.594207][ T1068] R10: 00000000343b8910 R11: 0000000000000246 R12: 0000000000000005
[  128.594657][ T1068] R13: 00000000686e712c R14: 0000000000499600 R15: 0000000000000000
| [  128.970803][ T1071] ------------[ cut here ]------------
| [ 128.971124][ T1071] WARNING: CPU: 2 PID: 1071 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) 
| [  128.972701][ T1071] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  128.973833][ T1071] Tainted: [W]=WARN
[  128.974072][ T1071] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 128.974462][ T1071] 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) 
[ 128.974798][ T1071] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  128.975951][ T1071] RSP: 0018:ffffc9000205f080 EFLAGS: 00010246
[  128.976352][ T1071] RAX: 0000000000000000 RBX: ffff88800679a000 RCX: 0000000000000001
[  128.976829][ T1071] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  128.977293][ T1071] RBP: ffffc9000205f168 R08: 0000000000000000 R09: 0000000000000000
[  128.977775][ T1071] R10: ffffc9000205f198 R11: ffffffff92cceab8 R12: 1ffff9200040be14
[  128.978239][ T1071] R13: 00000000000005dc R14: ffffc9000205f198 R15: ffff88800679af48
[  128.978713][ T1071] FS:  00007f23223f4800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  128.979253][ T1071] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  128.979674][ T1071] CR2: 00007f232264fb78 CR3: 0000000010de7002 CR4: 0000000000772ef0
[  128.980145][ T1071] PKRU: 55555554
[  128.980387][ T1071] Call Trace:
[  128.980624][ T1071]  <TASK>
[ 128.980820][ T1071] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 128.981142][ T1071] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 128.981458][ T1071] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 128.981861][ T1071] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 128.982185][ T1071] netif_set_mtu (net/core/dev.c:9652) 
[ 128.982501][ T1071] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 128.982838][ T1071] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 128.983232][ T1071] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 128.983474][ T1071] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 128.983820][ T1071] br_add_if (net/bridge/br_if.c:697) 
[ 128.984079][ T1071] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 128.984400][ T1071] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 128.984731][ T1071] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 128.985053][ T1071] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 128.985367][ T1071] ? __dev_get_by_name (net/core/dev.c:865) 
[ 128.985703][ T1071] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 128.986018][ T1071] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 128.986343][ T1071] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 128.986674][ T1071] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 128.986997][ T1071] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 128.987320][ T1071] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 128.987667][ T1071] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 128.987999][ T1071] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 128.988312][ T1071] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 128.988640][ T1071] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 128.988961][ T1071] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 128.989283][ T1071] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 128.989601][ T1071] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.989940][ T1071] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 128.990255][ T1071] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 128.990572][ T1071] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 128.990924][ T1071] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 128.991237][ T1071] ? 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) 
[ 128.991560][ T1071] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 128.991909][ T1071] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 128.992230][ T1071] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 128.992551][ T1071] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 128.992887][ T1071] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 128.993204][ T1071] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 128.993536][ T1071] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 128.993876][ T1071] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 128.994190][ T1071] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 128.994591][ T1071] ___sys_sendmsg (net/socket.c:2670) 
[ 128.994917][ T1071] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 128.995231][ T1071] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 128.995548][ T1071] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 128.995882][ T1071] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 128.996216][ T1071] ? __handle_mm_fault (mm/memory.c:6212) 
[ 128.996532][ T1071] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 128.996855][ T1071] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 128.997190][ T1071] __sys_sendmsg (net/socket.c:2700) 
[ 128.997504][ T1071] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 128.997829][ T1071] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 128.998147][ T1071] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 128.998471][ T1071] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 128.998799][ T1071] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 128.999117][ T1071] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  128.999499][ T1071] RIP: 0033:0x7f23225c11e7
[ 128.999845][ T1071] 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)
[  129.000968][ T1071] RSP: 002b:00007ffd64e4b678 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  129.001439][ T1071] RAX: ffffffffffffffda RBX: 00007ffd64e4bdb0 RCX: 00007f23225c11e7
[  129.001917][ T1071] RDX: 0000000000000000 RSI: 00007ffd64e4b6e0 RDI: 0000000000000005
[  129.002387][ T1071] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[  129.002870][ T1071] R10: 00007f232264fac0 R11: 0000000000000246 R12: 00007ffd64e4bde8
[  129.003364][ T1071] R13: 00000000686e712c R14: 0000000000499600 R15: 00007ffd64e4b7d0
| [  131.147545][ T1088] ------------[ cut here ]------------
| [ 131.147873][ T1088] WARNING: CPU: 3 PID: 1088 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) 
| [  131.148460][ T1088] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  131.149554][ T1088] Tainted: [W]=WARN
[  131.149796][ T1088] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 131.150178][ T1088] 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) 
[ 131.150497][ T1088] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  131.151572][ T1088] RSP: 0018:ffffc9000214eef0 EFLAGS: 00010246
[  131.151973][ T1088] RAX: 0000000000000000 RBX: ffff88800e0ba000 RCX: 0000000000000001
[  131.152420][ T1088] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  131.152919][ T1088] RBP: ffffc9000214efd8 R08: 0000000000000000 R09: 0000000000000000
[  131.153362][ T1088] R10: ffffc9000214f008 R11: ffffffff9238d1e0 R12: 1ffff92000429de2
[  131.153811][ T1088] R13: 00000000000005dc R14: ffffc9000214f008 R15: ffff88800e0baf48
[  131.154252][ T1088] FS:  00007f041d0fb800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[  131.154788][ T1088] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.155162][ T1088] CR2: 00000000004e6888 CR3: 0000000010da5006 CR4: 0000000000772ef0
[  131.155607][ T1088] PKRU: 55555554
[  131.155854][ T1088] Call Trace:
[  131.156078][ T1088]  <TASK>
[ 131.156231][ T1088] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 131.156532][ T1088] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.156858][ T1088] netif_set_mtu (net/core/dev.c:9652) 
[ 131.157155][ T1088] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 131.157466][ T1088] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 131.157702][ T1088] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 131.158002][ T1088] br_add_if (net/bridge/br_if.c:697) 
[ 131.158236][ T1088] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 131.158534][ T1088] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 131.158852][ T1088] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 131.159152][ T1088] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 131.159529][ T1088] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 131.159847][ T1088] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 131.160147][ T1088] ? __kernel_text_address (kernel/extable.c:79) 
[ 131.160443][ T1088] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.160772][ T1088] ? __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) 
[ 131.161077][ T1088] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 131.161482][ T1088] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 131.161800][ T1088] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 131.162095][ T1088] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 131.162391][ T1088] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 131.162697][ T1088] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 131.162996][ T1088] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 131.163295][ T1088] ? __create_object (mm/kmemleak.c:771) 
[ 131.163589][ T1088] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 131.163907][ T1088] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 131.164206][ T1088] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 131.164569][ T1088] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 131.164880][ T1088] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 131.165182][ T1088] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 131.165477][ T1088] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.165792][ T1088] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 131.166091][ T1088] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 131.166383][ T1088] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 131.166689][ T1088] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 131.166985][ T1088] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 131.167284][ T1088] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 131.167585][ T1088] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.167915][ T1088] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 131.168221][ T1088] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 131.168518][ T1088] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 131.168834][ T1088] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 131.169130][ T1088] ? 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) 
[ 131.169425][ T1088] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 131.169732][ T1088] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 131.170033][ T1088] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.170333][ T1088] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 131.170650][ T1088] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 131.170949][ T1088] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 131.171248][ T1088] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 131.171546][ T1088] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 131.171857][ T1088] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 131.172237][ T1088] ___sys_sendmsg (net/socket.c:2670) 
[ 131.172533][ T1088] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 131.172832][ T1088] ? __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) 
[ 131.173200][ T1088] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 131.173497][ T1088] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 131.173802][ T1088] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.174103][ T1088] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 131.174396][ T1088] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 131.174702][ T1088] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 131.175004][ T1088] __sys_sendmsg (net/socket.c:2700) 
[ 131.175295][ T1088] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 131.175676][ T1088] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 131.175984][ T1088] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 131.176282][ T1088] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 131.176578][ T1088] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  131.176955][ T1088] RIP: 0033:0x7f041d2c81e7
[ 131.177260][ T1088] 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)
[  131.178317][ T1088] RSP: 002b:00007ffde8380838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  131.178769][ T1088] RAX: ffffffffffffffda RBX: 00007ffde8380f70 RCX: 00007f041d2c81e7
[  131.179216][ T1088] RDX: 0000000000000000 RSI: 00007ffde83808a0 RDI: 0000000000000005
[  131.179675][ T1088] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[  131.180114][ T1088] R10: 00000000136dc910 R11: 0000000000000246 R12: 0000000000000005
[  131.180553][ T1088] R13: 00000000686e712e R14: 0000000000499600 R15: 0000000000000000
| [  131.539421][ T1091] ------------[ cut here ]------------
| [ 131.540260][ T1091] WARNING: CPU: 2 PID: 1091 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) 
| [  131.540930][ T1091] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  131.542069][ T1091] Tainted: [W]=WARN
[  131.542321][ T1091] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 131.542732][ T1091] 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) 
[ 131.543059][ T1091] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  131.544192][ T1091] RSP: 0018:ffffc9000217f080 EFLAGS: 00010246
[  131.544650][ T1091] RAX: 0000000000000000 RBX: ffff88800e0ba000 RCX: 0000000000000001
[  131.545117][ T1091] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  131.545590][ T1091] RBP: ffffc9000217f168 R08: 0000000000000000 R09: 0000000000000000
[  131.546113][ T1091] R10: ffffc9000217f198 R11: ffffffff92cceab8 R12: 1ffff9200042fe14
[  131.546598][ T1091] R13: 00000000000005dc R14: ffffc9000217f198 R15: ffff88800e0baf48
[  131.547409][ T1091] FS:  00007f5402dae800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  131.547974][ T1091] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.548373][ T1091] CR2: 000000000043d940 CR3: 0000000004e5c006 CR4: 0000000000772ef0
[  131.548907][ T1091] PKRU: 55555554
[  131.549154][ T1091] Call Trace:
[  131.549392][ T1091]  <TASK>
[ 131.549562][ T1091] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 131.549898][ T1091] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 131.550238][ T1091] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 131.550653][ T1091] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 131.550981][ T1091] netif_set_mtu (net/core/dev.c:9652) 
[ 131.551355][ T1091] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 131.551694][ T1091] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 131.552093][ T1091] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 131.552361][ T1091] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 131.552697][ T1091] br_add_if (net/bridge/br_if.c:697) 
[ 131.552955][ T1091] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 131.553267][ T1091] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 131.553583][ T1091] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 131.553916][ T1091] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 131.554226][ T1091] ? __dev_get_by_name (net/core/dev.c:865) 
[ 131.554539][ T1091] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 131.554863][ T1091] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 131.555218][ T1091] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 131.555536][ T1091] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 131.555871][ T1091] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 131.556200][ T1091] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 131.556524][ T1091] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 131.556869][ T1091] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 131.557187][ T1091] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 131.557510][ T1091] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 131.557843][ T1091] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 131.558169][ T1091] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 131.558508][ T1091] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.558844][ T1091] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 131.559160][ T1091] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 131.559479][ T1091] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 131.559820][ T1091] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 131.560140][ T1091] ? 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) 
[ 131.560458][ T1091] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 131.560801][ T1091] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 131.561115][ T1091] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.561437][ T1091] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 131.561776][ T1091] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 131.562098][ T1091] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 131.562426][ T1091] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 131.562759][ T1091] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 131.563070][ T1091] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 131.563469][ T1091] ___sys_sendmsg (net/socket.c:2670) 
[ 131.563802][ T1091] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 131.564120][ T1091] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 131.564437][ T1091] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 131.564782][ T1091] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 131.565119][ T1091] ? __handle_mm_fault (mm/memory.c:6212) 
[ 131.565452][ T1091] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 131.565778][ T1091] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 131.566116][ T1091] __sys_sendmsg (net/socket.c:2700) 
[ 131.566525][ T1091] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 131.566858][ T1091] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 131.567190][ T1091] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 131.567512][ T1091] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 131.567848][ T1091] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 131.568170][ T1091] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  131.568560][ T1091] RIP: 0033:0x7f5402f7b1e7
[ 131.568902][ T1091] 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)
[  131.570023][ T1091] RSP: 002b:00007fff1204d978 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  131.570500][ T1091] RAX: ffffffffffffffda RBX: 00007fff1204e0b0 RCX: 00007f5402f7b1e7
[  131.570994][ T1091] RDX: 0000000000000000 RSI: 00007fff1204d9e0 RDI: 0000000000000005
[  131.571520][ T1091] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[  131.572022][ T1091] R10: 00007f5403009ac0 R11: 0000000000000246 R12: 00007fff1204e0e8
[  131.572514][ T1091] R13: 00000000686e712f R14: 0000000000499600 R15: 00007fff1204dad0
| [  142.891621][   T68] ------------[ cut here ]------------
| [ 142.891965][ T68] WARNING: CPU: 3 PID: 68 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) 
| [  142.892504][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  142.893711][   T68] Tainted: [W]=WARN
[  142.893952][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  142.894341][   T68] Workqueue: netns cleanup_net
[ 142.894692][ T68] 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) 
[ 142.895008][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  142.896320][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  142.897005][   T68] RAX: 0000000000000000 RBX: ffff88800679a000 RCX: 0000000000000001
[  142.897470][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  142.898067][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  142.898531][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  142.899150][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800679af48
[  142.899610][   T68] FS:  0000000000000000(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[  142.900267][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  142.900677][   T68] CR2: 00007f8eafb10520 CR3: 000000005694a006 CR4: 0000000000772ef0
[  142.901151][   T68] PKRU: 55555554
[  142.901389][   T68] Call Trace:
[  142.901623][   T68]  <TASK>
[ 142.901796][ T68] ? __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) 
[ 142.902182][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 142.902425][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 142.902749][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 142.903063][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 142.903371][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 142.903691][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 142.903996][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 142.904304][ T68] ? kthread (kernel/kthread.c:464) 
[ 142.904540][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 142.904874][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 142.905187][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 142.905503][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 142.905819][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 142.906143][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 142.906376][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 142.906696][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 142.906927][ T68] br_device_event (net/bridge/br.c:141) 
[ 142.907240][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 142.907553][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 142.907880][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 142.908269][ T68] ? 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) 
[ 142.908580][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 142.908969][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 142.909346][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 142.909749][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 142.910142][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 142.910447][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 142.910865][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 142.911176][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 142.911483][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 142.911808][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 142.912125][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 142.912433][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 142.912763][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 142.913081][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 142.913397][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 142.913720][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 142.914033][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 142.914346][ T68] kthread (kernel/kthread.c:464) 
[ 142.914576][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 142.914887][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 142.915190][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 142.915493][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 142.915807][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 142.916115][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 142.916420][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 142.916737][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  143.385522][   T68] ------------[ cut here ]------------
| [ 143.385869][ T68] WARNING: CPU: 1 PID: 68 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) 
| [  143.386394][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  143.387556][   T68] Tainted: [W]=WARN
[  143.387802][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  143.388186][   T68] Workqueue: netns cleanup_net
[ 143.388502][ T68] 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) 
[ 143.388918][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  143.389955][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  143.390322][   T68] RAX: 0000000000000000 RBX: ffff88800e0ba000 RCX: 0000000000000001
[  143.390776][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  143.391208][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  143.391649][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  143.392082][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800e0baf48
[  143.392518][   T68] FS:  0000000000000000(0000) GS:ffff8880d9019000(0000) knlGS:0000000000000000
[  143.393034][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.393396][   T68] CR2: 00007f09421c7000 CR3: 000000005694a005 CR4: 0000000000772ef0
[  143.393842][   T68] PKRU: 55555554
[  143.394059][   T68] Call Trace:
[  143.394273][   T68]  <TASK>
[ 143.394423][ T68] ? __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) 
[ 143.394797][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 143.395017][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 143.395300][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 143.395595][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 143.395907][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 143.396193][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 143.396484][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 143.396782][ T68] ? kthread (kernel/kthread.c:464) 
[ 143.396998][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 143.397284][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 143.397577][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 143.397893][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 143.398181][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 143.398485][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 143.398721][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 143.399014][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 143.399232][ T68] br_device_event (net/bridge/br.c:141) 
[ 143.399522][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 143.399829][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 143.400122][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 143.400484][ T68] ? 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) 
[ 143.400793][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 143.401157][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 143.401511][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 143.401881][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 143.402247][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 143.402535][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 143.402912][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 143.403212][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 143.403495][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 143.403799][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 143.404088][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 143.404377][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 143.404682][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 143.404980][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 143.405272][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 143.405570][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 143.405882][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 143.406170][ T68] kthread (kernel/kthread.c:464) 
[ 143.406387][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 143.406681][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 143.406967][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 143.407256][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 143.407542][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 143.407853][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 143.408139][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 143.408425][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  154.433103][ T1273] ------------[ cut here ]------------
| [ 154.433461][ T1273] WARNING: CPU: 2 PID: 1273 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) 
| [  154.434372][ T1273] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  154.435467][ T1273] Tainted: [W]=WARN
[  154.435721][ T1273] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 154.436107][ T1273] 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) 
[ 154.436421][ T1273] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  154.437520][ T1273] RSP: 0018:ffffc9000282eef0 EFLAGS: 00010246
[  154.437922][ T1273] RAX: 0000000000000000 RBX: ffff88800ce62000 RCX: 0000000000000001
[  154.438382][ T1273] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  154.438850][ T1273] RBP: ffffc9000282efd8 R08: 0000000000000000 R09: 0000000000000000
[  154.439302][ T1273] R10: ffffc9000282f008 R11: ffffffff9238d1e0 R12: 1ffff92000505de2
[  154.439787][ T1273] R13: 00000000000005dc R14: ffffc9000282f008 R15: ffff88800ce62f48
[  154.440243][ T1273] FS:  00007f26f27fa800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  154.440815][ T1273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  154.441200][ T1273] CR2: 00000000004e6888 CR3: 000000000ab03006 CR4: 0000000000772ef0
[  154.441682][ T1273] PKRU: 55555554
[  154.441917][ T1273] Call Trace:
[  154.442148][ T1273]  <TASK>
[ 154.442314][ T1273] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 154.442619][ T1273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.442952][ T1273] netif_set_mtu (net/core/dev.c:9652) 
[ 154.443256][ T1273] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 154.443578][ T1273] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 154.443836][ T1273] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 154.444149][ T1273] br_add_if (net/bridge/br_if.c:697) 
[ 154.444396][ T1273] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 154.444721][ T1273] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 154.445041][ T1273] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 154.445351][ T1273] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 154.445748][ T1273] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 154.446057][ T1273] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 154.446367][ T1273] ? __kernel_text_address (kernel/extable.c:79) 
[ 154.446686][ T1273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.447003][ T1273] ? __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) 
[ 154.447308][ T1273] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 154.447699][ T1273] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 154.448008][ T1273] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 154.448318][ T1273] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 154.448623][ T1273] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 154.448963][ T1273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 154.449269][ T1273] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 154.449572][ T1273] ? __create_object (mm/kmemleak.c:771) 
[ 154.449890][ T1273] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 154.450200][ T1273] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 154.450513][ T1273] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 154.450925][ T1273] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 154.451241][ T1273] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 154.451551][ T1273] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 154.451869][ T1273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.452182][ T1273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 154.452489][ T1273] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 154.452814][ T1273] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 154.453130][ T1273] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 154.453436][ T1273] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 154.453752][ T1273] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 154.454070][ T1273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.454382][ T1273] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 154.454698][ T1273] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 154.455011][ T1273] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 154.455330][ T1273] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 154.455654][ T1273] ? 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) 
[ 154.455965][ T1273] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 154.456274][ T1273] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 154.456576][ T1273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.456908][ T1273] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 154.457225][ T1273] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 154.457530][ T1273] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 154.457859][ T1273] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 154.458177][ T1273] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 154.458479][ T1273] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 154.458878][ T1273] ___sys_sendmsg (net/socket.c:2670) 
[ 154.459183][ T1273] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 154.459487][ T1273] ? __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) 
[ 154.459872][ T1273] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 154.460197][ T1273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 154.460505][ T1273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.460848][ T1273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 154.461156][ T1273] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 154.461460][ T1273] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 154.461782][ T1273] __sys_sendmsg (net/socket.c:2700) 
[ 154.462093][ T1273] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 154.462472][ T1273] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 154.462806][ T1273] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 154.463115][ T1273] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 154.463424][ T1273] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  154.463807][ T1273] RIP: 0033:0x7f26f29c71e7
[ 154.464126][ T1273] 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)
[  154.465221][ T1273] RSP: 002b:00007ffdfae70958 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  154.465695][ T1273] RAX: ffffffffffffffda RBX: 00007ffdfae71090 RCX: 00007f26f29c71e7
[  154.466151][ T1273] RDX: 0000000000000000 RSI: 00007ffdfae709c0 RDI: 0000000000000005
[  154.466609][ T1273] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[  154.467071][ T1273] R10: 00000000310a5910 R11: 0000000000000246 R12: 0000000000000005
[  154.467524][ T1273] R13: 00000000686e7145 R14: 0000000000499600 R15: 0000000000000000
| [  154.827163][ T1276] ------------[ cut here ]------------
| [ 154.827477][ T1276] WARNING: CPU: 3 PID: 1276 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) 
| [  154.828103][ T1276] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  154.829206][ T1276] Tainted: [W]=WARN
[  154.829439][ T1276] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 154.829832][ T1276] 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) 
[ 154.830151][ T1276] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  154.831267][ T1276] RSP: 0018:ffffc9000285f080 EFLAGS: 00010246
[  154.831664][ T1276] RAX: 0000000000000000 RBX: ffff88800ce62000 RCX: 0000000000000001
[  154.832134][ T1276] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  154.832595][ T1276] RBP: ffffc9000285f168 R08: 0000000000000000 R09: 0000000000000000
[  154.833069][ T1276] R10: ffffc9000285f198 R11: ffffffff9238d1e0 R12: 1ffff9200050be14
[  154.833530][ T1276] R13: 00000000000005dc R14: ffffc9000285f198 R15: ffff88800ce62f48
[  154.834004][ T1276] FS:  00007fe6ebb24800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[  154.834546][ T1276] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  154.834943][ T1276] CR2: 00007fe6ebd7fb78 CR3: 000000000c110006 CR4: 0000000000772ef0
[  154.835407][ T1276] PKRU: 55555554
[  154.835655][ T1276] Call Trace:
[  154.835884][ T1276]  <TASK>
[ 154.836046][ T1276] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 154.836363][ T1276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.837444][ T1276] netif_set_mtu (net/core/dev.c:9652) 
[ 154.837766][ T1276] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 154.838091][ T1276] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 154.838325][ T1276] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 154.838647][ T1276] br_add_if (net/bridge/br_if.c:697) 
[ 154.838892][ T1276] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 154.839204][ T1276] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 154.839512][ T1276] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 154.839854][ T1276] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 154.840160][ T1276] ? __dev_get_by_name (net/core/dev.c:865) 
[ 154.840466][ T1276] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 154.840791][ T1276] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 154.841108][ T1276] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 154.841412][ T1276] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 154.841740][ T1276] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 154.842060][ T1276] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 154.842374][ T1276] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 154.842704][ T1276] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 154.843009][ T1276] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 154.843320][ T1276] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 154.843650][ T1276] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 154.843970][ T1276] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 154.844282][ T1276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.844595][ T1276] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 154.844912][ T1276] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 154.845222][ T1276] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 154.845540][ T1276] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 154.845858][ T1276] ? 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) 
[ 154.846175][ T1276] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 154.846487][ T1276] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 154.846804][ T1276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 154.847117][ T1276] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 154.847427][ T1276] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 154.847754][ T1276] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 154.848076][ T1276] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 154.848387][ T1276] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 154.848713][ T1276] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 154.849109][ T1276] ___sys_sendmsg (net/socket.c:2670) 
[ 154.849418][ T1276] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 154.849735][ T1276] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 154.850045][ T1276] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 154.850349][ T1276] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 154.850678][ T1276] ? __handle_mm_fault (mm/memory.c:6212) 
[ 154.850988][ T1276] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 154.851294][ T1276] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 154.851621][ T1276] __sys_sendmsg (net/socket.c:2700) 
[ 154.851953][ T1276] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 154.852259][ T1276] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 154.852572][ T1276] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 154.852896][ T1276] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 154.853207][ T1276] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 154.853522][ T1276] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  154.853913][ T1276] RIP: 0033:0x7fe6ebcf11e7
[ 154.854230][ T1276] 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)
[  154.855343][ T1276] RSP: 002b:00007fffd021d8e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  154.855827][ T1276] RAX: ffffffffffffffda RBX: 00007fffd021e020 RCX: 00007fe6ebcf11e7
[  154.856289][ T1276] RDX: 0000000000000000 RSI: 00007fffd021d950 RDI: 0000000000000005
[  154.856759][ T1276] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[  154.857235][ T1276] R10: 00007fe6ebd7fac0 R11: 0000000000000246 R12: 00007fffd021e058
[  154.857699][ T1276] R13: 00000000686e7146 R14: 0000000000499600 R15: 00007fffd021da40
| [  156.829868][ T1293] ------------[ cut here ]------------
| [ 156.830239][ T1293] WARNING: CPU: 2 PID: 1293 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) 
| [  156.830902][ T1293] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  156.832051][ T1293] Tainted: [W]=WARN
[  156.832304][ T1293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 156.832715][ T1293] 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) 
[ 156.833057][ T1293] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  156.834195][ T1293] RSP: 0018:ffffc9000292eef0 EFLAGS: 00010246
[  156.834608][ T1293] RAX: 0000000000000000 RBX: ffff88800b80a000 RCX: 0000000000000001
[  156.835101][ T1293] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  156.835589][ T1293] RBP: ffffc9000292efd8 R08: 0000000000000000 R09: 0000000000000000
[  156.836083][ T1293] R10: ffffc9000292f008 R11: ffffffff9238d1e0 R12: 1ffff92000525de2
[  156.836560][ T1293] R13: 00000000000005dc R14: ffffc9000292f008 R15: ffff88800b80af48
[  156.837056][ T1293] FS:  00007f9e6c471800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  156.837614][ T1293] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  156.838028][ T1293] CR2: 00000000004e6888 CR3: 000000000f8a9005 CR4: 0000000000772ef0
[  156.838513][ T1293] PKRU: 55555554
[  156.838770][ T1293] Call Trace:
[  156.839022][ T1293]  <TASK>
[ 156.839197][ T1293] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 156.839531][ T1293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 156.839881][ T1293] netif_set_mtu (net/core/dev.c:9652) 
[ 156.840206][ T1293] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 156.840549][ T1293] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 156.840838][ T1293] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 156.841172][ T1293] br_add_if (net/bridge/br_if.c:697) 
[ 156.841433][ T1293] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 156.841766][ T1293] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 156.842102][ T1293] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 156.842434][ T1293] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 156.842852][ T1293] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 156.843182][ T1293] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 156.843505][ T1293] ? __kernel_text_address (kernel/extable.c:79) 
[ 156.843843][ T1293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 156.844177][ T1293] ? __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) 
[ 156.844506][ T1293] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 156.844919][ T1293] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 156.845250][ T1293] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 156.845576][ T1293] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 156.845912][ T1293] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 156.846240][ T1293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 156.846567][ T1293] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 156.846905][ T1293] ? __create_object (mm/kmemleak.c:771) 
[ 156.847232][ T1293] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 156.847787][ T1293] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 156.848116][ T1293] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 156.848522][ T1293] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 156.848865][ T1293] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 156.849411][ T1293] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 156.849749][ T1293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 156.850083][ T1293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 156.850408][ T1293] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 156.850963][ T1293] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 156.851292][ T1293] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 156.851619][ T1293] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 156.851959][ T1293] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 156.852502][ T1293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 156.852843][ T1293] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 156.853170][ T1293] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 156.853496][ T1293] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 156.854053][ T1293] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 156.854375][ T1293] ? 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) 
[ 156.854709][ T1293] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 156.855036][ T1293] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 156.855581][ T1293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 156.855918][ T1293] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 156.856246][ T1293] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 156.856568][ T1293] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 156.856909][ T1293] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 156.857235][ T1293] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 156.857559][ T1293] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 156.857982][ T1293] ___sys_sendmsg (net/socket.c:2670) 
[ 156.858519][ T1293] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 156.858852][ T1293] ? __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) 
[ 156.859253][ T1293] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 156.859581][ T1293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 156.859918][ T1293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 156.860251][ T1293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 156.860586][ T1293] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 156.861149][ T1293] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 156.861485][ T1293] __sys_sendmsg (net/socket.c:2700) 
[ 156.861817][ T1293] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 156.862223][ T1293] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 156.862783][ T1293] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 156.863113][ T1293] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 156.863439][ T1293] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  156.863855][ T1293] RIP: 0033:0x7f9e6c63e1e7
[ 156.864412][ T1293] 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)
[  156.865780][ T1293] RSP: 002b:00007ffc175d7668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  156.866279][ T1293] RAX: ffffffffffffffda RBX: 00007ffc175d7da0 RCX: 00007f9e6c63e1e7
[  156.866771][ T1293] RDX: 0000000000000000 RSI: 00007ffc175d76d0 RDI: 0000000000000005
[  156.867467][ T1293] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[  156.867956][ T1293] R10: 000000001bbbc910 R11: 0000000000000246 R12: 0000000000000005
[  156.868445][ T1293] R13: 00000000686e7148 R14: 0000000000499600 R15: 0000000000000000
| [  157.245432][ T1296] ------------[ cut here ]------------
| [ 157.246913][ T1296] WARNING: CPU: 2 PID: 1296 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) 
| [  157.247583][ T1296] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  157.248794][ T1296] Tainted: [W]=WARN
[  157.249054][ T1296] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 157.249467][ T1296] 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) 
[ 157.249818][ T1296] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  157.251002][ T1296] RSP: 0018:ffffc900024ff080 EFLAGS: 00010246
[  157.251427][ T1296] RAX: 0000000000000000 RBX: ffff88800b80a000 RCX: 0000000000000001
[  157.251933][ T1296] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  157.252431][ T1296] RBP: ffffc900024ff168 R08: 0000000000000000 R09: 0000000000000000
[  157.252940][ T1296] R10: ffffc900024ff198 R11: ffffffff92cceab8 R12: 1ffff9200049fe14
[  157.253435][ T1296] R13: 00000000000005dc R14: ffffc900024ff198 R15: ffff88800b80af48
[  157.253939][ T1296] FS:  00007f54aaaa2800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  157.254513][ T1296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  157.254948][ T1296] CR2: 000000000043d940 CR3: 0000000010adb005 CR4: 0000000000772ef0
[  157.255447][ T1296] PKRU: 55555554
[  157.255709][ T1296] Call Trace:
[  157.255964][ T1296]  <TASK>
[ 157.256144][ T1296] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 157.256487][ T1296] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 157.256833][ T1296] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 157.257244][ T1296] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 157.257591][ T1296] netif_set_mtu (net/core/dev.c:9652) 
[ 157.257937][ T1296] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 157.258287][ T1296] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 157.258716][ T1296] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 157.258975][ T1296] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 157.259314][ T1296] br_add_if (net/bridge/br_if.c:697) 
[ 157.259591][ T1296] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 157.259940][ T1296] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 157.260280][ T1296] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 157.260618][ T1296] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 157.260973][ T1296] ? __dev_get_by_name (net/core/dev.c:865) 
[ 157.261309][ T1296] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 157.261657][ T1296] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 157.261996][ T1296] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 157.262327][ T1296] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 157.262680][ T1296] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 157.263026][ T1296] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 157.263369][ T1296] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 157.263727][ T1296] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 157.264058][ T1296] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 157.264391][ T1296] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 157.264735][ T1296] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 157.265080][ T1296] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 157.265419][ T1296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 157.265768][ T1296] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 157.266107][ T1296] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 157.266444][ T1296] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 157.266799][ T1296] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 157.267132][ T1296] ? 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) 
[ 157.267476][ T1296] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 157.267823][ T1296] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 157.268157][ T1296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 157.268497][ T1296] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 157.268846][ T1296] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 157.269179][ T1296] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 157.269522][ T1296] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 157.269868][ T1296] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 157.270208][ T1296] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 157.270644][ T1296] ___sys_sendmsg (net/socket.c:2670) 
[ 157.270992][ T1296] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 157.271329][ T1296] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 157.271681][ T1296] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 157.272014][ T1296] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 157.272359][ T1296] ? __handle_mm_fault (mm/memory.c:6212) 
[ 157.272703][ T1296] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 157.273035][ T1296] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 157.273389][ T1296] __sys_sendmsg (net/socket.c:2700) 
[ 157.273739][ T1296] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 157.274073][ T1296] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 157.274413][ T1296] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 157.274759][ T1296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 157.275099][ T1296] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 157.275437][ T1296] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  157.275858][ T1296] RIP: 0033:0x7f54aac6f1e7
[ 157.276205][ T1296] 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)
[  157.277382][ T1296] RSP: 002b:00007fffaf5665d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  157.277889][ T1296] RAX: ffffffffffffffda RBX: 00007fffaf566d10 RCX: 00007f54aac6f1e7
[  157.278379][ T1296] RDX: 0000000000000000 RSI: 00007fffaf566640 RDI: 0000000000000005
[  157.278887][ T1296] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[  157.279395][ T1296] R10: 00007f54aacfdac0 R11: 0000000000000246 R12: 00007fffaf566d48
[  157.279897][ T1296] R13: 00000000686e7148 R14: 0000000000499600 R15: 00007fffaf566730
| [  173.764962][   T68] ------------[ cut here ]------------
| [ 173.765283][ T68] WARNING: CPU: 0 PID: 68 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) 
| [  173.765824][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  173.767386][   T68] Tainted: [W]=WARN
[  173.767613][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  173.768023][   T68] Workqueue: netns cleanup_net
[ 173.768333][ T68] 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) 
[ 173.768658][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  173.769785][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  173.770168][   T68] RAX: 0000000000000000 RBX: ffff88800ce62000 RCX: 0000000000000001
[  173.770637][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  173.771131][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  173.771577][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  173.772036][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800ce62f48
[  173.772493][   T68] FS:  0000000000000000(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[  173.773036][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  173.773418][   T68] CR2: 00007fe212e23000 CR3: 000000005694a004 CR4: 0000000000772ef0
[  173.773879][   T68] PKRU: 55555554
[  173.774101][   T68] Call Trace:
[  173.774354][   T68]  <TASK>
[ 173.774510][ T68] ? __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) 
[ 173.774905][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 173.775136][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 173.775435][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 173.775753][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 173.776052][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 173.776347][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 173.776657][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 173.776949][ T68] ? kthread (kernel/kthread.c:464) 
[ 173.777178][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 173.777476][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 173.777792][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 173.778113][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 173.778414][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 173.778745][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 173.778977][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 173.779311][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 173.779551][ T68] br_device_event (net/bridge/br.c:141) 
[ 173.779881][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 173.780191][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 173.780496][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 173.780904][ T68] ? 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) 
[ 173.781209][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 173.781581][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 173.781971][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 173.782359][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 173.782746][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 173.783045][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 173.783466][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 173.783785][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 173.784085][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 173.784391][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 173.784717][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 173.785021][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 173.785325][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 173.785655][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 173.785962][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 173.786266][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 173.786569][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 173.786885][ T68] kthread (kernel/kthread.c:464) 
[ 173.787114][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 173.787436][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 173.787748][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 173.788046][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 173.788345][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 173.788650][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 173.788948][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 173.789244][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  174.290048][   T68] ------------[ cut here ]------------
| [ 174.290357][ T68] WARNING: CPU: 3 PID: 68 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) 
| [  174.290891][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  174.292039][   T68] Tainted: [W]=WARN
[  174.292265][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  174.292647][   T68] Workqueue: netns cleanup_net
[ 174.292962][ T68] 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) 
[ 174.293276][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  174.294335][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  174.294718][   T68] RAX: 0000000000000000 RBX: ffff88800b80a000 RCX: 0000000000000001
[  174.295168][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  174.295611][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  174.296059][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  174.296505][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800b80af48
[  174.296954][   T68] FS:  0000000000000000(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[  174.297476][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  174.297857][   T68] CR2: 0000559484a22098 CR3: 000000005694a005 CR4: 0000000000772ef0
[  174.298302][   T68] PKRU: 55555554
[  174.298522][   T68] Call Trace:
[  174.298750][   T68]  <TASK>
[ 174.298898][ T68] ? __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) 
[ 174.299275][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 174.299498][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 174.299812][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 174.300114][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 174.300409][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 174.300715][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 174.301009][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 174.301305][ T68] ? kthread (kernel/kthread.c:464) 
[ 174.301526][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 174.301829][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 174.302127][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 174.302432][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 174.302732][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 174.303042][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 174.303264][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 174.303566][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 174.303799][ T68] br_device_event (net/bridge/br.c:141) 
[ 174.304095][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 174.304397][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 174.304709][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 174.305084][ T68] ? 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) 
[ 174.305380][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 174.305761][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 174.306127][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 174.306494][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 174.306922][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 174.307234][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 174.307615][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 174.307920][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 174.308220][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 174.308518][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 174.308822][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 174.309123][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 174.309436][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 174.309757][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 174.310070][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 174.310390][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 174.310730][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 174.311044][ T68] kthread (kernel/kthread.c:464) 
[ 174.311287][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 174.311581][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 174.311880][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 174.312177][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 174.312468][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 174.312771][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 174.313066][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 174.313355][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  185.769784][ T1533] ------------[ cut here ]------------
| [ 185.770149][ T1533] WARNING: CPU: 3 PID: 1533 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) 
| [  185.770893][ T1533] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  185.772032][ T1533] Tainted: [W]=WARN
[  185.772272][ T1533] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 185.772670][ T1533] 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) 
[ 185.773005][ T1533] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  185.774140][ T1533] RSP: 0018:ffffc9000304eef0 EFLAGS: 00010246
[  185.774542][ T1533] RAX: 0000000000000000 RBX: ffff888010cea000 RCX: 0000000000000001
[  185.775014][ T1533] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  185.775492][ T1533] RBP: ffffc9000304efd8 R08: 0000000000000000 R09: 0000000000000000
[  185.775974][ T1533] R10: ffffc9000304f008 R11: ffffffff9238d1e0 R12: 1ffff92000609de2
[  185.776443][ T1533] R13: 00000000000005dc R14: ffffc9000304f008 R15: ffff888010ceaf48
[  185.776931][ T1533] FS:  00007feb78550800(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[  185.777475][ T1533] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.777881][ T1533] CR2: 00000000004e6888 CR3: 0000000010984002 CR4: 0000000000772ef0
[  185.778348][ T1533] PKRU: 55555554
[  185.778584][ T1533] Call Trace:
[  185.778824][ T1533]  <TASK>
[ 185.778987][ T1533] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 185.779310][ T1533] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 185.779681][ T1533] netif_set_mtu (net/core/dev.c:9652) 
[ 185.779992][ T1533] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 185.780316][ T1533] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 185.780556][ T1533] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 185.780910][ T1533] br_add_if (net/bridge/br_if.c:697) 
[ 185.781159][ T1533] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 185.781470][ T1533] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 185.781803][ T1533] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 185.782123][ T1533] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 185.782523][ T1533] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 185.782862][ T1533] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 185.783173][ T1533] ? __kernel_text_address (kernel/extable.c:79) 
[ 185.783496][ T1533] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 185.783825][ T1533] ? __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) 
[ 185.784144][ T1533] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 185.784528][ T1533] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 185.784848][ T1533] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 185.785159][ T1533] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 185.785468][ T1533] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 185.785790][ T1533] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 185.786107][ T1533] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 185.786420][ T1533] ? __create_object (mm/kmemleak.c:771) 
[ 185.786739][ T1533] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 185.787053][ T1533] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 185.787367][ T1533] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 185.787761][ T1533] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 185.788076][ T1533] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 185.788393][ T1533] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 185.788718][ T1533] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 185.789034][ T1533] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 185.789345][ T1533] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 185.789660][ T1533] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 185.789975][ T1533] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 185.790286][ T1533] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 185.790600][ T1533] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 185.790936][ T1533] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 185.791262][ T1533] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 185.791573][ T1533] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 185.791893][ T1533] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 185.792218][ T1533] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 185.792527][ T1533] ? 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) 
[ 185.792861][ T1533] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 185.793178][ T1533] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 185.793497][ T1533] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 185.793824][ T1533] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 185.794138][ T1533] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 185.794449][ T1533] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 185.794778][ T1533] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 185.795090][ T1533] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 185.795400][ T1533] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 185.795814][ T1533] ___sys_sendmsg (net/socket.c:2670) 
[ 185.796127][ T1533] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 185.796435][ T1533] ? __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) 
[ 185.797051][ T1533] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 185.797365][ T1533] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 185.797687][ T1533] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 185.798006][ T1533] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 185.798564][ T1533] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 185.798883][ T1533] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 185.799201][ T1533] __sys_sendmsg (net/socket.c:2700) 
[ 185.799510][ T1533] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 185.800118][ T1533] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 185.800441][ T1533] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 185.800776][ T1533] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 185.801302][ T1533] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  185.801701][ T1533] RIP: 0033:0x7feb7871d1e7
[ 185.802026][ T1533] 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)
[  185.803371][ T1533] RSP: 002b:00007fff6f85ff58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  185.803855][ T1533] RAX: ffffffffffffffda RBX: 00007fff6f860690 RCX: 00007feb7871d1e7
[  185.804538][ T1533] RDX: 0000000000000000 RSI: 00007fff6f85ffc0 RDI: 0000000000000005
[  185.805010][ T1533] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[  185.805472][ T1533] R10: 0000000011a91910 R11: 0000000000000246 R12: 0000000000000005
[  185.806168][ T1533] R13: 00000000686e7165 R14: 0000000000499600 R15: 0000000000000000
| [  186.182405][ T1536] ------------[ cut here ]------------
| [ 186.182772][ T1536] WARNING: CPU: 2 PID: 1536 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) 
| [  186.183428][ T1536] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  186.184600][ T1536] Tainted: [W]=WARN
[  186.184886][ T1536] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 186.185316][ T1536] 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) 
[ 186.186068][ T1536] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  186.187225][ T1536] RSP: 0018:ffffc9000305f080 EFLAGS: 00010246
[  186.187652][ T1536] RAX: 0000000000000000 RBX: ffff888010cea000 RCX: 0000000000000001
[  186.188142][ T1536] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  186.188657][ T1536] RBP: ffffc9000305f168 R08: 0000000000000000 R09: 0000000000000000
[  186.189151][ T1536] R10: ffffc9000305f198 R11: ffffffff92cceab8 R12: 1ffff9200060be14
[  186.189656][ T1536] R13: 00000000000005dc R14: ffffc9000305f198 R15: ffff888010ceaf48
[  186.190158][ T1536] FS:  00007f06c3c4d800(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  186.190845][ T1536] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  186.191240][ T1536] CR2: 000000000043d940 CR3: 0000000010984005 CR4: 0000000000772ef0
[  186.191721][ T1536] PKRU: 55555554
[  186.191965][ T1536] Call Trace:
[  186.192207][ T1536]  <TASK>
[ 186.192387][ T1536] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 186.192740][ T1536] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 186.193065][ T1536] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 186.193464][ T1536] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 186.193795][ T1536] netif_set_mtu (net/core/dev.c:9652) 
[ 186.194112][ T1536] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 186.194438][ T1536] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 186.194856][ T1536] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 186.195101][ T1536] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 186.195449][ T1536] br_add_if (net/bridge/br_if.c:697) 
[ 186.195719][ T1536] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 186.196035][ T1536] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 186.196355][ T1536] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 186.196702][ T1536] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 186.197024][ T1536] ? __dev_get_by_name (net/core/dev.c:865) 
[ 186.197344][ T1536] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 186.197672][ T1536] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 186.197995][ T1536] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 186.198313][ T1536] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 186.198651][ T1536] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 186.198983][ T1536] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 186.199308][ T1536] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 186.199659][ T1536] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 186.199975][ T1536] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 186.200294][ T1536] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 186.200608][ T1536] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 186.200971][ T1536] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 186.201296][ T1536] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 186.201619][ T1536] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 186.201948][ T1536] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 186.202271][ T1536] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 186.202599][ T1536] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 186.202931][ T1536] ? 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) 
[ 186.203252][ T1536] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 186.203572][ T1536] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 186.203902][ T1536] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 186.204228][ T1536] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 186.204559][ T1536] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 186.204904][ T1536] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 186.205232][ T1536] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 186.205553][ T1536] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 186.205884][ T1536] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 186.206288][ T1536] ___sys_sendmsg (net/socket.c:2670) 
[ 186.206605][ T1536] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 186.206949][ T1536] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 186.207268][ T1536] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 186.207584][ T1536] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 186.207917][ T1536] ? __handle_mm_fault (mm/memory.c:6212) 
[ 186.208234][ T1536] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 186.208547][ T1536] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 186.208924][ T1536] __sys_sendmsg (net/socket.c:2700) 
[ 186.209243][ T1536] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 186.209564][ T1536] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 186.209903][ T1536] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 186.210270][ T1536] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 186.210609][ T1536] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 186.210967][ T1536] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  186.211390][ T1536] RIP: 0033:0x7f06c3e1a1e7
[ 186.211806][ T1536] 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)
[  186.213015][ T1536] RSP: 002b:00007ffdd2520a58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  186.213538][ T1536] RAX: ffffffffffffffda RBX: 00007ffdd2521190 RCX: 00007f06c3e1a1e7
[  186.214056][ T1536] RDX: 0000000000000000 RSI: 00007ffdd2520ac0 RDI: 0000000000000005
[  186.214549][ T1536] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[  186.215053][ T1536] R10: 00007f06c3ea8ac0 R11: 0000000000000246 R12: 00007ffdd25211c8
[  186.215551][ T1536] R13: 00000000686e7165 R14: 0000000000499600 R15: 00007ffdd2520bb0
| [  188.318977][ T1553] ------------[ cut here ]------------
| [ 188.319482][ T1553] WARNING: CPU: 0 PID: 1553 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) 
| [  188.320958][ T1553] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  188.322680][ T1553] Tainted: [W]=WARN
[  188.323071][ T1553] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 188.323724][ T1553] 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) 
[ 188.324254][ T1553] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  188.326108][ T1553] RSP: 0018:ffffc9000313eef0 EFLAGS: 00010246
[  188.326789][ T1553] RAX: 0000000000000000 RBX: ffff88800d3f2000 RCX: 0000000000000001
[  188.327561][ T1553] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  188.328339][ T1553] RBP: ffffc9000313efd8 R08: 0000000000000000 R09: 0000000000000000
[  188.329122][ T1553] R10: ffffc9000313f008 R11: ffffffff9238d1e0 R12: 1ffff92000627de2
[  188.329903][ T1553] R13: 00000000000005dc R14: ffffc9000313f008 R15: ffff88800d3f2f48
[  188.330707][ T1553] FS:  00007f96805b3800(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[  188.331603][ T1553] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  188.332276][ T1553] CR2: 00000000004e6888 CR3: 0000000011cf5003 CR4: 0000000000772ef0
[  188.333059][ T1553] PKRU: 55555554
[  188.333441][ T1553] Call Trace:
[  188.333836][ T1553]  <TASK>
[ 188.334101][ T1553] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 188.334614][ T1553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.335186][ T1553] netif_set_mtu (net/core/dev.c:9652) 
[ 188.335714][ T1553] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 188.336265][ T1553] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 188.336671][ T1553] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 188.337192][ T1553] br_add_if (net/bridge/br_if.c:697) 
[ 188.337600][ T1553] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 188.338120][ T1553] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 188.338667][ T1553] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 188.339186][ T1553] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 188.339832][ T1553] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 188.340319][ T1553] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 188.340843][ T1553] ? __kernel_text_address (kernel/extable.c:79) 
[ 188.341363][ T1553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.341894][ T1553] ? __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) 
[ 188.342406][ T1553] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 188.343073][ T1553] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 188.343599][ T1553] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 188.344122][ T1553] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 188.344647][ T1553] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 188.345159][ T1553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 188.345682][ T1553] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 188.346191][ T1553] ? __create_object (mm/kmemleak.c:771) 
[ 188.346730][ T1553] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 188.347246][ T1553] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 188.347777][ T1553] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 188.348408][ T1553] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 188.348944][ T1553] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 188.349467][ T1553] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 188.350004][ T1553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.350527][ T1553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 188.351080][ T1553] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 188.351587][ T1553] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 188.352127][ T1553] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 188.352654][ T1553] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 188.353171][ T1553] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 188.353707][ T1553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.354231][ T1553] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 188.354772][ T1553] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 188.355284][ T1553] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 188.355837][ T1553] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 188.356346][ T1553] ? 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) 
[ 188.356873][ T1553] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 188.357391][ T1553] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 188.357913][ T1553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.358439][ T1553] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 188.358989][ T1553] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 188.359512][ T1553] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 188.360051][ T1553] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 188.360568][ T1553] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 188.361100][ T1553] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 188.361773][ T1553] ___sys_sendmsg (net/socket.c:2670) 
[ 188.362279][ T1553] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 188.362816][ T1553] ? __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) 
[ 188.363463][ T1553] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 188.363995][ T1553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 188.364517][ T1553] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.365052][ T1553] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 188.365568][ T1553] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 188.366092][ T1553] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 188.366619][ T1553] __sys_sendmsg (net/socket.c:2700) 
[ 188.367152][ T1553] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 188.367809][ T1553] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 188.368343][ T1553] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 188.368875][ T1553] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 188.369388][ T1553] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  188.370038][ T1553] RIP: 0033:0x7f96807801e7
[ 188.370566][ T1553] 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)
[  188.372562][ T1553] RSP: 002b:00007fff0aeb8f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  188.373554][ T1553] RAX: ffffffffffffffda RBX: 00007fff0aeb9680 RCX: 00007f96807801e7
[  188.374251][ T1553] RDX: 0000000000000000 RSI: 00007fff0aeb8fb0 RDI: 0000000000000005
[  188.375038][ T1553] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[  188.375965][ T1553] R10: 000000001effe910 R11: 0000000000000246 R12: 0000000000000005
[  188.376723][ T1553] R13: 00000000686e7167 R14: 0000000000499600 R15: 0000000000000000
| [  188.767327][ T1556] ------------[ cut here ]------------
| [ 188.767660][ T1556] WARNING: CPU: 0 PID: 1556 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) 
| [  188.768275][ T1556] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  188.769408][ T1556] Tainted: [W]=WARN
[  188.769657][ T1556] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 188.770040][ T1556] 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) 
[ 188.770391][ T1556] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  188.771526][ T1556] RSP: 0018:ffffc9000315f080 EFLAGS: 00010246
[  188.771974][ T1556] RAX: 0000000000000000 RBX: ffff88800d3f2000 RCX: 0000000000000001
[  188.772443][ T1556] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  188.772914][ T1556] RBP: ffffc9000315f168 R08: 0000000000000000 R09: 0000000000000000
[  188.773405][ T1556] R10: ffffc9000315f198 R11: ffffffff9238d1e0 R12: 1ffff9200062be14
[  188.773906][ T1556] R13: 00000000000005dc R14: ffffc9000315f198 R15: ffff88800d3f2f48
[  188.774374][ T1556] FS:  00007fdbe65c8800(0000) GS:ffff8880d8f99000(0000) knlGS:0000000000000000
[  188.774921][ T1556] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  188.775320][ T1556] CR2: 000000000043d940 CR3: 000000000b301001 CR4: 0000000000772ef0
[  188.775825][ T1556] PKRU: 55555554
[  188.776095][ T1556] Call Trace:
[  188.776340][ T1556]  <TASK>
[ 188.776514][ T1556] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 188.776833][ T1556] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.777182][ T1556] netif_set_mtu (net/core/dev.c:9652) 
[ 188.777495][ T1556] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 188.777827][ T1556] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 188.778061][ T1556] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 188.778465][ T1556] br_add_if (net/bridge/br_if.c:697) 
[ 188.778724][ T1556] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 188.779036][ T1556] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 188.779355][ T1556] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 188.779675][ T1556] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 188.779976][ T1556] ? __dev_get_by_name (net/core/dev.c:865) 
[ 188.780291][ T1556] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 188.780598][ T1556] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 188.780934][ T1556] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 188.781269][ T1556] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 188.781581][ T1556] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 188.781912][ T1556] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 188.782234][ T1556] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 188.782547][ T1556] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 188.782864][ T1556] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 188.783202][ T1556] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 188.783507][ T1556] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 188.783823][ T1556] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 188.784187][ T1556] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.784679][ T1556] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 188.785182][ T1556] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 188.785686][ T1556] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 188.786241][ T1556] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 188.786791][ T1556] ? 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) 
[ 188.787309][ T1556] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 188.787622][ T1556] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 188.787943][ T1556] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 188.788309][ T1556] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 188.788620][ T1556] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 188.788936][ T1556] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 188.789265][ T1556] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 188.789572][ T1556] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 188.789883][ T1556] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 188.790284][ T1556] ___sys_sendmsg (net/socket.c:2670) 
[ 188.790588][ T1556] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 188.790918][ T1556] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 188.791255][ T1556] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 188.791565][ T1556] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 188.791898][ T1556] ? __handle_mm_fault (mm/memory.c:6212) 
[ 188.792281][ T1556] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 188.792584][ T1556] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 188.792921][ T1556] __sys_sendmsg (net/socket.c:2700) 
[ 188.793239][ T1556] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 188.793544][ T1556] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 188.793866][ T1556] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 188.794187][ T1556] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 188.794494][ T1556] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 188.794814][ T1556] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  188.795222][ T1556] RIP: 0033:0x7fdbe67951e7
[ 188.795538][ T1556] 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)
[  188.796655][ T1556] RSP: 002b:00007ffe78aec4b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  188.797122][ T1556] RAX: ffffffffffffffda RBX: 00007ffe78aecbf0 RCX: 00007fdbe67951e7
[  188.797578][ T1556] RDX: 0000000000000000 RSI: 00007ffe78aec520 RDI: 0000000000000005
[  188.798047][ T1556] RBP: 0000000000000006 R08: 0000000000000064 R09: 0000000000000000
[  188.798547][ T1556] R10: 00007fdbe6823ac0 R11: 0000000000000246 R12: 00007ffe78aecc28
[  188.799018][ T1556] R13: 00000000686e7168 R14: 0000000000499600 R15: 00007ffe78aec610
| [  205.637131][   T68] ------------[ cut here ]------------
| [ 205.637477][ T68] WARNING: CPU: 2 PID: 68 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) 
| [  205.638027][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  205.639243][   T68] Tainted: [W]=WARN
[  205.639483][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  205.639871][   T68] Workqueue: netns cleanup_net
[ 205.640196][ T68] 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) 
[ 205.640515][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  205.641650][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  205.642050][   T68] RAX: 0000000000000000 RBX: ffff888010cea000 RCX: 0000000000000001
[  205.642507][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  205.642987][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  205.643457][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  205.643950][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff888010ceaf48
[  205.644420][   T68] FS:  0000000000000000(0000) GS:ffff8880d9099000(0000) knlGS:0000000000000000
[  205.644977][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  205.645385][   T68] CR2: 00007f8eafb10520 CR3: 000000005694a006 CR4: 0000000000772ef0
[  205.645855][   T68] PKRU: 55555554
[  205.646091][   T68] Call Trace:
[  205.646328][   T68]  <TASK>
[ 205.646490][ T68] ? __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) 
[ 205.646884][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 205.647120][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 205.647443][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 205.647760][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 205.648071][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 205.648384][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 205.648703][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 205.649005][ T68] ? kthread (kernel/kthread.c:464) 
[ 205.649243][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 205.649546][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 205.649878][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 205.650212][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 205.650523][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 205.650883][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 205.651129][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 205.651479][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 205.651728][ T68] br_device_event (net/bridge/br.c:141) 
[ 205.652042][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 205.652354][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 205.652675][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 205.653058][ T68] ? 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) 
[ 205.653364][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 205.653777][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 205.654158][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 205.654543][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 205.654954][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 205.655269][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 205.655666][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 205.655978][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 205.656314][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 205.656661][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 205.656977][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 205.657288][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 205.657603][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 205.657942][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 205.658259][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 205.658566][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 205.658890][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 205.659209][ T68] kthread (kernel/kthread.c:464) 
[ 205.659462][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 205.659771][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 205.660085][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 205.660391][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 205.660719][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 205.661039][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 205.661362][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 205.661675][ T68] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [  206.166997][   T68] ------------[ cut here ]------------
| [ 206.167484][ T68] WARNING: CPU: 3 PID: 68 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) 
| [  206.169254][   T68] Modules linked in: act_gact cls_flower sch_ingress vxlan
| [  206.171089][   T68] Tainted: [W]=WARN
[  206.171476][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  206.172132][   T68] Workqueue: netns cleanup_net
[ 206.172687][ T68] 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) 
[ 206.173209][ T68] Code: 00 00 8b 05 77 04 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 da fc 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 77 04 bc 02    	mov    0x2bc0477(%rip),%eax        # 0x2bc047f
   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 da fc 9b 00       	call   0x9bfcfb
  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
[  206.175003][   T68] RSP: 0018:ffffc900004975b0 EFLAGS: 00010246
[  206.175623][   T68] RAX: 0000000000000000 RBX: ffff88800d3f2000 RCX: 0000000000000001
[  206.176403][   T68] RDX: 0000000000000000 RSI: ffffffff91910751 RDI: ffffffff91058280
[  206.177188][   T68] RBP: ffffc90000497698 R08: 0000000000000000 R09: 0000000000000000
[  206.177957][   T68] R10: ffffc900004976c8 R11: ffffffff9238d1e0 R12: 1ffff92000092eba
[  206.178712][   T68] R13: 00000000000005dc R14: ffffc900004976c8 R15: ffff88800d3f2f48
[  206.179345][   T68] FS:  0000000000000000(0000) GS:ffff8880d9119000(0000) knlGS:0000000000000000
[  206.180246][   T68] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  206.180911][   T68] CR2: 000055faddce94c8 CR3: 000000005694a005 CR4: 0000000000772ef0
[  206.181669][   T68] PKRU: 55555554
[  206.182038][   T68] Call Trace:
[  206.182363][   T68]  <TASK>
[ 206.182616][ T68] ? __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) 
[ 206.183146][ T68] ? br_del_if (net/bridge/br_if.c:742) 
[ 206.183496][ T68] ? br_device_event (net/bridge/br.c:141) 
[ 206.184023][ T68] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 206.184500][ T68] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 206.185023][ T68] ? cleanup_net (net/core/net_namespace.c:684) 
[ 206.185526][ T68] ? process_one_work (kernel/workqueue.c:3238) 
[ 206.186055][ T68] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 206.186553][ T68] ? kthread (kernel/kthread.c:464) 
[ 206.186950][ T68] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 206.187457][ T68] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 206.187976][ T68] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 206.188513][ T68] netif_set_mtu (net/core/dev.c:9652) 
[ 206.189034][ T68] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 206.189583][ T68] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 206.189990][ T68] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 206.190507][ T68] br_del_if (net/bridge/br_if.c:743) 
[ 206.190919][ T68] br_device_event (net/bridge/br.c:141) 
[ 206.191426][ T68] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 206.191961][ T68] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 206.192481][ T68] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 206.193159][ T68] ? 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) 
[ 206.193682][ T68] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 206.194300][ T68] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 206.194937][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 206.195556][ T68] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 206.196218][ T68] default_device_exit_batch (net/core/dev.c:12673) 
[ 206.196744][ T68] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 206.197380][ T68] ops_undo_list (net/core/net_namespace.c:250) 
[ 206.197918][ T68] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 206.198423][ T68] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 206.198956][ T68] cleanup_net (net/core/net_namespace.c:684) 
[ 206.199459][ T68] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 206.199986][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 206.200489][ T68] process_one_work (kernel/workqueue.c:3238) 
[ 206.201043][ T68] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 206.201563][ T68] ? assign_work (kernel/workqueue.c:1200) 
[ 206.202091][ T68] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 206.202608][ T68] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 206.203133][ T68] kthread (kernel/kthread.c:464) 
[ 206.203514][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 206.204019][ T68] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 206.204521][ T68] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 206.205061][ T68] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 206.205552][ T68] ? __pfx_kthread (kernel/kthread.c:413) 
[ 206.206474][ T68] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 206.206986][ T68] ? __pfx_kthread (kernel/kthread.c:413) 


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