======================================
| [   19.271087][  T304] veth1: entered promiscuous mode
| [   19.273229][  T304] ------------[ cut here ]------------
| [ 19.273573][ T304] WARNING: CPU: 0 PID: 304 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) 
| [   19.274356][  T304] Modules linked in: bridge stp llc vrf veth
[   19.275423][  T304] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.275832][ T304] 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) 
[ 19.276164][ T304] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 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 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   19.277279][  T304] RSP: 0018:ffffc90000596ef0 EFLAGS: 00010246
[   19.277694][  T304] RAX: 0000000000000000 RBX: ffff888004d5a000 RCX: 0000000000000001
[   19.278170][  T304] RDX: 0000000000000000 RSI: ffffffffb3e9b939 RDI: ffffffffb36555e0
[   19.278637][  T304] RBP: ffffc90000596fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.279101][  T304] R10: ffffc90000597010 R11: ffffffffb4ca8918 R12: 1ffff920000b2de2
[   19.279566][  T304] R13: 00000000000005dc R14: ffffc90000597010 R15: ffff888004d5af08
[   19.280040][  T304] FS:  00007fbc1273a800(0000) GS:ffff8880802b7000(0000) knlGS:0000000000000000
[   19.280601][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.281000][  T304] CR2: 00000000004e5aa8 CR3: 0000000008c07006 CR4: 0000000000772ef0
[   19.281482][  T304] PKRU: 55555554
[   19.281723][  T304] Call Trace:
[   19.281963][  T304]  <TASK>
[ 19.282131][ T304] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.282441][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.282781][ T304] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.283096][ T304] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.283491][ T304] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.283810][ T304] netif_set_mtu (net/core/dev.c:9652) 
[ 19.284141][ T304] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.284509][ T304] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.284941][ T304] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.285187][ T304] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.285624][ T304] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.285986][ T304] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.286301][ T304] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.286622][ T304] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.287019][ T304] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.287325][ T304] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.287641][ T304] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.287957][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.288265][ T304] ? __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) 
[ 19.288580][ T304] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.288976][ T304] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.289294][ T304] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.289609][ T304] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.289927][ T304] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.290238][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.290561][ T304] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.290866][ T304] ? __create_object (mm/kmemleak.c:771) 
[ 19.291177][ T304] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.291509][ T304] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.291828][ T304] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.292217][ T304] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.292544][ T304] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.292863][ T304] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.293165][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.293490][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.293801][ T304] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.294107][ T304] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.294413][ T304] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.294761][ T304] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.295069][ T304] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.295376][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.295695][ T304] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.296007][ T304] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.296329][ T304] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.296686][ T304] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.297000][ T304] ? 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) 
[ 19.297316][ T304] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.297643][ T304] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.297947][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.298260][ T304] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.298594][ T304] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.298906][ T304] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.299225][ T304] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.299558][ T304] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.299868][ T304] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.300258][ T304] ___sys_sendmsg (net/socket.c:2670) 
[ 19.300571][ T304] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.300889][ T304] ? __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) 
[ 19.301278][ T304] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.301597][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.301915][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.302230][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.302548][ T304] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.302855][ T304] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.303166][ T304] __sys_sendmsg (net/socket.c:2700) 
[ 19.303484][ T304] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.303862][ T304] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.304177][ T304] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.304519][ T304] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.304829][ T304] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.305218][  T304] RIP: 0033:0x7fbc129071e7
[ 19.305562][ T304] 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)
[   19.306679][  T304] RSP: 002b:00007ffe3be14f18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.307167][  T304] RAX: ffffffffffffffda RBX: 00007ffe3be15640 RCX: 00007fbc129071e7
[   19.307655][  T304] RDX: 0000000000000000 RSI: 00007ffe3be14f80 RDI: 0000000000000005
[   19.308129][  T304] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.308601][  T304] R10: 0000000000bda910 R11: 0000000000000246 R12: 0000000000000004
[   19.309079][  T304] R13: 00000000686e68f2 R14: 0000000000499600 R15: 0000000000000000
| [   19.552993][  T306] ------------[ cut here ]------------
| [ 19.553488][ T306] WARNING: CPU: 2 PID: 306 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) 
| [   19.554230][  T306] Modules linked in: bridge stp llc vrf veth
| [   19.555336][  T306] Tainted: [W]=WARN
[   19.555604][  T306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.556176][ T306] 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) 
[ 19.556539][ T306] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 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 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   19.559182][  T306] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   19.559691][  T306] RAX: 0000000000000000 RBX: ffff888004d5a000 RCX: 0000000000000001
[   19.560215][  T306] RDX: 0000000000000000 RSI: ffffffffb3e9b939 RDI: ffffffffb36555e0
[   19.560706][  T306] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.561190][  T306] R10: ffffc90000607010 R11: ffffffffb4ca8918 R12: 1ffff920000c0de2
[   19.561696][  T306] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff888004d5af08
[   19.562318][  T306] FS:  00007fbd257cd800(0000) GS:ffff8880803b7000(0000) knlGS:0000000000000000
[   19.562949][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.563352][  T306] CR2: 00000000004e5ab0 CR3: 000000000987f003 CR4: 0000000000772ef0
[   19.563868][  T306] PKRU: 55555554
[   19.564112][  T306] Call Trace:
[   19.564365][  T306]  <TASK>
[ 19.564696][ T306] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.565046][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.565374][ T306] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.565704][ T306] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.566112][ T306] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.566438][ T306] netif_set_mtu (net/core/dev.c:9652) 
[ 19.566776][ T306] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.567203][ T306] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.567661][ T306] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.567926][ T306] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.568363][ T306] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.568744][ T306] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.569215][ T306] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.569560][ T306] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.569975][ T306] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.570295][ T306] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.570744][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.571143][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.571480][ T306] ? __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) 
[ 19.571823][ T306] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.572219][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.572555][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.572888][ T306] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.573204][ T306] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.573535][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.573866][ T306] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.574194][ T306] ? __create_object (mm/kmemleak.c:771) 
[ 19.574538][ T306] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.574878][ T306] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.575194][ T306] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.575599][ T306] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.575939][ T306] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.576348][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.576827][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.577168][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.577498][ T306] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.578018][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.578344][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.578676][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.579154][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.579503][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.579853][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.580173][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.580508][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.580859][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.581176][ T306] ? 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) 
[ 19.581636][ T306] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.581978][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.582307][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.582697][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.583042][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.583361][ T306] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.583707][ T306] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.584044][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.584361][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.584819][ T306] ___sys_sendmsg (net/socket.c:2670) 
[ 19.585268][ T306] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.585605][ T306] ? __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) 
[ 19.586019][ T306] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.586342][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.586685][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.587062][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.587411][ T306] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.587851][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.588243][ T306] __sys_sendmsg (net/socket.c:2700) 
[ 19.588580][ T306] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.589001][ T306] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.589331][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.589671][ T306] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.590006][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.590404][  T306] RIP: 0033:0x7fbd2599a1e7
[ 19.590743][ T306] 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)
[   19.591880][  T306] RSP: 002b:00007fff0604ea08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.592414][  T306] RAX: ffffffffffffffda RBX: 00007fff0604f130 RCX: 00007fbd2599a1e7
[   19.592993][  T306] RDX: 0000000000000000 RSI: 00007fff0604ea70 RDI: 0000000000000005
[   19.593478][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.594070][  T306] R10: 000000003d011910 R11: 0000000000000246 R12: 0000000000000004
[   19.594577][  T306] R13: 00000000686e68f3 R14: 0000000000499600 R15: 0000000000000000
| [   54.229296][  T668] ------------[ cut here ]------------
| [ 54.229692][ T668] WARNING: CPU: 2 PID: 668 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) 
| [   54.230327][  T668] Modules linked in: act_skbedit cls_flower sch_prio sch_ingress bridge stp llc vrf veth
| [   54.231587][  T668] Tainted: [W]=WARN
[   54.231844][  T668] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.232267][ T668] 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) 
[ 54.232640][ T668] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 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 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   54.233801][  T668] RSP: 0018:ffffc900010a6f70 EFLAGS: 00010246
[   54.234218][  T668] RAX: 0000000000000000 RBX: ffff888004d5a000 RCX: 0000000000000001
[   54.234749][  T668] RDX: 0000000000000000 RSI: ffffffffb3e9b939 RDI: ffffffffb36555e0
[   54.235234][  T668] RBP: ffffc900010a7058 R08: 0000000000000000 R09: 0000000000000000
[   54.235731][  T668] R10: ffffc900010a7088 R11: ffffffffb0200130 R12: 1ffff92000214df2
[   54.236206][  T668] R13: 00000000000005dc R14: ffffc900010a7088 R15: ffff888004d5af08
[   54.236702][  T668] FS:  00007f000bfe2800(0000) GS:ffff8880803b7000(0000) knlGS:0000000000000000
[   54.237272][  T668] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.237692][  T668] CR2: 00000000004e5ab0 CR3: 000000000e2f9005 CR4: 0000000000772ef0
[   54.238179][  T668] PKRU: 55555554
[   54.238426][  T668] Call Trace:
[   54.238690][  T668]  <TASK>
[ 54.238865][ T668] ? __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) 
[ 54.239286][ T668] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 54.239679][ T668] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 54.240010][ T668] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.240338][ T668] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 54.240699][ T668] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 54.241027][ T668] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.241352][ T668] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.241700][ T668] ? ___sys_sendmsg (net/socket.c:2670) 
[ 54.242035][ T668] ? __sys_sendmsg (net/socket.c:2700) 
[ 54.242360][ T668] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.242705][ T668] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 54.243107][ T668] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.243466][ T668] netif_set_mtu (net/core/dev.c:9652) 
[ 54.243796][ T668] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 54.244143][ T668] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 54.244404][ T668] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 54.244882][ T668] br_del_if (net/bridge/br_if.c:743) bridge 
[ 54.245247][ T668] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 54.245586][ T668] do_set_master (net/core/rtnetlink.c:2932) 
[ 54.245915][ T668] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.246245][ T668] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 54.246668][ T668] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 54.247047][ T668] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 54.247384][ T668] ? __kernel_text_address (kernel/extable.c:79) 
[ 54.247736][ T668] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.248066][ T668] ? __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) 
[ 54.248397][ T668] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 54.248814][ T668] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.249143][ T668] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.249481][ T668] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 54.249811][ T668] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 54.250189][ T668] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.250536][ T668] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 54.250862][ T668] ? __create_object (mm/kmemleak.c:771) 
[ 54.251194][ T668] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 54.251533][ T668] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 54.251859][ T668] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 54.252272][ T668] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 54.252620][ T668] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 54.252951][ T668] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.253273][ T668] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.253628][ T668] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.253952][ T668] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 54.254274][ T668] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.254623][ T668] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.254957][ T668] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 54.255281][ T668] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.255626][ T668] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.255955][ T668] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 54.256283][ T668] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.256622][ T668] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 54.256960][ T668] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 54.257293][ T668] ? 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) 
[ 54.257635][ T668] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 54.257971][ T668] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.258297][ T668] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.258642][ T668] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.258971][ T668] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.259293][ T668] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.259647][ T668] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.259978][ T668] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.260301][ T668] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.260733][ T668] ___sys_sendmsg (net/socket.c:2670) 
[ 54.261061][ T668] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.261388][ T668] ? __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) 
[ 54.261808][ T668] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.262140][ T668] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.262485][ T668] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.262817][ T668] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.263142][ T668] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 54.263480][ T668] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.263816][ T668] __sys_sendmsg (net/socket.c:2700) 
[ 54.264134][ T668] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.264643][ T668] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.264989][ T668] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.265321][ T668] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.265660][ T668] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.266059][  T668] RIP: 0033:0x7f000c1af1e7
[ 54.266398][ T668] 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)
[   54.267544][  T668] RSP: 002b:00007ffd1f6f9eb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.268032][  T668] RAX: ffffffffffffffda RBX: 00007ffd1f6fa5e0 RCX: 00007f000c1af1e7
[   54.268527][  T668] RDX: 0000000000000000 RSI: 00007ffd1f6f9f20 RDI: 0000000000000005
[   54.269015][  T668] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.269518][  T668] R10: 00007f000c0acee8 R11: 0000000000000246 R12: 0000000000000003
[   54.270000][  T668] R13: 00000000686e6915 R14: 0000000000499600 R15: 0000000000000000
| [   54.508691][  T670] ------------[ cut here ]------------
| [ 54.509091][ T670] WARNING: CPU: 2 PID: 670 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) 
| [   54.510218][  T670] Modules linked in: act_skbedit cls_flower sch_prio sch_ingress bridge stp llc vrf veth
| [   54.511521][  T670] Tainted: [W]=WARN
[   54.511788][  T670] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.512208][ T670] 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) 
[ 54.512563][ T670] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 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 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   54.513742][  T670] RSP: 0018:ffffc900010c6f70 EFLAGS: 00010246
[   54.514158][  T670] RAX: 0000000000000000 RBX: ffff888004d5a000 RCX: 0000000000000001
[   54.514681][  T670] RDX: 0000000000000000 RSI: ffffffffb3e9b939 RDI: ffffffffb36555e0
[   54.515176][  T670] RBP: ffffc900010c7058 R08: 0000000000000000 R09: 0000000000000000
[   54.515679][  T670] R10: ffffc900010c7088 R11: ffffffffb4379160 R12: 1ffff92000218df2
[   54.516163][  T670] R13: 00000000000005dc R14: ffffc900010c7088 R15: ffff888004d5af08
[   54.516655][  T670] FS:  00007f941588c800(0000) GS:ffff8880803b7000(0000) knlGS:0000000000000000
[   54.517212][  T670] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.517666][  T670] CR2: 00000000004e5aa8 CR3: 00000000057a1001 CR4: 0000000000772ef0
[   54.518165][  T670] PKRU: 55555554
[   54.518419][  T670] Call Trace:
[   54.518681][  T670]  <TASK>
[ 54.518857][ T670] ? __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) 
[ 54.519263][ T670] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 54.519661][ T670] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 54.519990][ T670] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.520313][ T670] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 54.520651][ T670] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 54.521009][ T670] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.521335][ T670] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.521690][ T670] ? ___sys_sendmsg (net/socket.c:2670) 
[ 54.522019][ T670] ? __sys_sendmsg (net/socket.c:2700) 
[ 54.522342][ T670] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.522683][ T670] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 54.523082][ T670] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.523420][ T670] netif_set_mtu (net/core/dev.c:9652) 
[ 54.523766][ T670] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 54.524106][ T670] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 54.524355][ T670] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 54.524848][ T670] br_del_if (net/bridge/br_if.c:743) bridge 
[ 54.525210][ T670] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 54.525565][ T670] do_set_master (net/core/rtnetlink.c:2932) 
[ 54.525898][ T670] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.526243][ T670] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 54.526675][ T670] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 54.527001][ T670] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 54.527331][ T670] ? __kernel_text_address (kernel/extable.c:79) 
[ 54.527672][ T670] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.528003][ T670] ? __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) 
[ 54.528328][ T670] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 54.528751][ T670] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.529085][ T670] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.529408][ T670] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 54.529784][ T670] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 54.530118][ T670] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.530472][ T670] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 54.530863][ T670] ? __create_object (mm/kmemleak.c:771) 
[ 54.531211][ T670] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 54.531582][ T670] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 54.531929][ T670] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 54.532354][ T670] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 54.532730][ T670] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 54.533078][ T670] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.533410][ T670] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.533773][ T670] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.534123][ T670] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 54.534449][ T670] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.534807][ T670] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.535136][ T670] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 54.535490][ T670] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.535819][ T670] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.536148][ T670] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 54.536485][ T670] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.536813][ T670] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 54.537149][ T670] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 54.537496][ T670] ? 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) 
[ 54.537825][ T670] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 54.538161][ T670] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.538521][ T670] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.538865][ T670] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.539227][ T670] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.539578][ T670] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.539916][ T670] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.540251][ T670] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.540612][ T670] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.541043][ T670] ___sys_sendmsg (net/socket.c:2670) 
[ 54.541384][ T670] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.541757][ T670] ? __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) 
[ 54.542164][ T670] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.542525][ T670] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.542856][ T670] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.543185][ T670] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.543522][ T670] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 54.543848][ T670] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.544191][ T670] __sys_sendmsg (net/socket.c:2700) 
[ 54.544543][ T670] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.544951][ T670] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.545289][ T670] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.545644][ T670] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.545973][ T670] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.546382][  T670] RIP: 0033:0x7f9415a591e7
[ 54.546743][ T670] 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)
[   54.547902][  T670] RSP: 002b:00007fff64492fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.548426][  T670] RAX: ffffffffffffffda RBX: 00007fff644936d0 RCX: 00007f9415a591e7
[   54.548936][  T670] RDX: 0000000000000000 RSI: 00007fff64493010 RDI: 0000000000000005
[   54.549422][  T670] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.549948][  T670] R10: 00007f9415956ee8 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_del_if
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if