======================================
| [   18.798078][  T299] veth1: entered promiscuous mode
| [   18.800722][  T299] ------------[ cut here ]------------
| [ 18.801046][ T299] WARNING: CPU: 0 PID: 299 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) 
| [   18.801684][  T299] Modules linked in: bridge stp llc vrf veth
[   18.802743][  T299] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.803151][ T299] 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) 
[ 18.803480][ T299] 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
[   18.804755][  T299] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   18.805306][  T299] RAX: 0000000000000000 RBX: ffff88800582a000 RCX: 0000000000000001
[   18.805795][  T299] RDX: 0000000000000000 RSI: ffffffff9f09b939 RDI: ffffffff9e8555e0
[   18.806277][  T299] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.806752][  T299] R10: ffffc90000557010 R11: ffffffff9fea8918 R12: 1ffff920000aade2
[   18.807229][  T299] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff88800582af08
[   18.807698][  T299] FS:  00007fe7de1fd800(0000) GS:ffff8880950b7000(0000) knlGS:0000000000000000
[   18.808274][  T299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.808674][  T299] CR2: 00000000004e5aa8 CR3: 000000000a6f6005 CR4: 0000000000772ef0
[   18.809156][  T299] PKRU: 55555554
[   18.809391][  T299] Call Trace:
[   18.809628][  T299]  <TASK>
[ 18.809794][ T299] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.810379][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.810718][ T299] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.811030][ T299] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.811437][ T299] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.811750][ T299] netif_set_mtu (net/core/dev.c:9652) 
[ 18.812064][ T299] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.812396][ T299] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.812830][ T299] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.813080][ T299] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.813508][ T299] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.813868][ T299] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 18.814194][ T299] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.814510][ T299] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.814900][ T299] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.815224][ T299] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.815531][ T299] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.815868][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.816189][ T299] ? __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) 
[ 18.816499][ T299] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.816884][ T299] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.817207][ T299] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.817516][ T299] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.817827][ T299] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.818152][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.818468][ T299] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.818776][ T299] ? __create_object (mm/kmemleak.c:771) 
[ 18.819104][ T299] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.819417][ T299] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.819731][ T299] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.820125][ T299] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.820448][ T299] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.820762][ T299] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.821085][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.821403][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.821711][ T299] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.822015][ T299] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.822336][ T299] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.822645][ T299] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.822964][ T299] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.823329][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.823647][ T299] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.823966][ T299] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.824290][ T299] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.824615][ T299] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.824930][ T299] ? 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) 
[ 18.825275][ T299] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 18.825593][ T299] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.825914][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.826240][ T299] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.826557][ T299] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.826871][ T299] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.827205][ T299] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.827535][ T299] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.827844][ T299] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.828255][ T299] ___sys_sendmsg (net/socket.c:2670) 
[ 18.828567][ T299] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.828879][ T299] ? __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) 
[ 18.829284][ T299] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.829609][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.829927][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.830256][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.830573][ T299] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.830888][ T299] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.831210][ T299] __sys_sendmsg (net/socket.c:2700) 
[ 18.831523][ T299] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.831915][ T299] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.832253][ T299] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.832567][ T299] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.832884][ T299] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.833283][  T299] RIP: 0033:0x7fe7de3ca1e7
[ 18.833614][ T299] 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)
[   18.834743][  T299] RSP: 002b:00007fff15819598 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.835223][  T299] RAX: ffffffffffffffda RBX: 00007fff15819cc0 RCX: 00007fe7de3ca1e7
[   18.835699][  T299] RDX: 0000000000000000 RSI: 00007fff15819600 RDI: 0000000000000005
[   18.836178][  T299] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.836661][  T299] R10: 000000000a894910 R11: 0000000000000246 R12: 0000000000000004
[   18.837142][  T299] R13: 00000000686e74f0 R14: 0000000000499600 R15: 0000000000000000
| [   18.968086][  T301] ------------[ cut here ]------------
| [ 18.968405][ T301] WARNING: CPU: 0 PID: 301 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) 
| [   18.969016][  T301] Modules linked in: bridge stp llc vrf veth
| [   18.970050][  T301] Tainted: [W]=WARN
[   18.970299][  T301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.970695][ T301] 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) 
[ 18.971013][ T301] 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
[   18.972135][  T301] RSP: 0018:ffffc90000546ef0 EFLAGS: 00010246
[   18.972530][  T301] RAX: 0000000000000000 RBX: ffff88800582a000 RCX: 0000000000000001
[   18.972997][  T301] RDX: 0000000000000000 RSI: ffffffff9f09b939 RDI: ffffffff9e8555e0
[   18.973480][  T301] RBP: ffffc90000546fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.973949][  T301] R10: ffffc90000547010 R11: ffffffff9fea8918 R12: 1ffff920000a8de2
[   18.974418][  T301] R13: 00000000000005dc R14: ffffc90000547010 R15: ffff88800582af08
[   18.974889][  T301] FS:  00007fb6a6f3a800(0000) GS:ffff8880950b7000(0000) knlGS:0000000000000000
[   18.975432][  T301] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.975836][  T301] CR2: 00000000004e5ab0 CR3: 000000000beed002 CR4: 0000000000772ef0
[   18.976308][  T301] PKRU: 55555554
[   18.976540][  T301] Call Trace:
[   18.976778][  T301]  <TASK>
[ 18.976941][ T301] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.977255][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.977573][ T301] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.977882][ T301] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.978280][ T301] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.978598][ T301] netif_set_mtu (net/core/dev.c:9652) 
[ 18.978907][ T301] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.979242][ T301] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.979684][ T301] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.979922][ T301] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.980359][ T301] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.980717][ T301] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 18.981034][ T301] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.981360][ T301] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.981754][ T301] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.982075][ T301] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.982387][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.982703][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.983021][ T301] ? __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) 
[ 18.983342][ T301] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.983737][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.984049][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.984368][ T301] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.984675][ T301] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.984986][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.985307][ T301] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.985627][ T301] ? __create_object (mm/kmemleak.c:771) 
[ 18.985955][ T301] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.986292][ T301] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.986606][ T301] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.986999][ T301] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.987334][ T301] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.987652][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.987963][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.988287][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.988599][ T301] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.988912][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.989228][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.989536][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.989846][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.990163][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.990481][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.990790][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.991118][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.991438][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.991746][ T301] ? 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) 
[ 18.992056][ T301] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 18.992379][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.992689][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.993002][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.993327][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.993636][ T301] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.993956][ T301] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.994304][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.994612][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.995010][ T301] ___sys_sendmsg (net/socket.c:2670) 
[ 18.995322][ T301] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.995652][ T301] ? __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) 
[ 18.996040][ T301] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.996363][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.996674][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.996987][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.997312][ T301] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.997627][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.997953][ T301] __sys_sendmsg (net/socket.c:2700) 
[ 18.998273][ T301] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.998657][ T301] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.998978][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.999297][ T301] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.999607][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.999990][  T301] RIP: 0033:0x7fb6a71071e7
[ 19.000333][ T301] 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)
[   19.001455][  T301] RSP: 002b:00007ffd85b74218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.001925][  T301] RAX: ffffffffffffffda RBX: 00007ffd85b74940 RCX: 00007fb6a71071e7
[   19.002413][  T301] RDX: 0000000000000000 RSI: 00007ffd85b74280 RDI: 0000000000000005
[   19.002876][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.003343][  T301] R10: 0000000006297910 R11: 0000000000000246 R12: 0000000000000004


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