======================================
| [   19.972655][  T313] veth1: entered promiscuous mode
| [   19.973893][  T313] ------------[ cut here ]------------
| [ 19.974223][ T313] WARNING: CPU: 0 PID: 313 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) 
| [   19.974876][  T313] Modules linked in: bridge stp llc 8021q vrf veth
[   19.975966][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.976410][ T313] 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) 
[ 19.976739][ T313] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 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 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   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 1a 63 7b 00       	call   0x7b633b
  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
[   19.977888][  T313] RSP: 0018:ffffc90000546ef0 EFLAGS: 00010246
[   19.978474][  T313] RAX: 0000000000000000 RBX: ffff88800a96a000 RCX: 0000000000000001
[   19.978959][  T313] RDX: 0000000000000000 RSI: ffffffffac29b941 RDI: ffffffffaba555e0
[   19.979445][  T313] RBP: ffffc90000546fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.979923][  T313] R10: ffffc90000547010 R11: ffffffffad0a8918 R12: 1ffff920000a8de2
[   19.980408][  T313] R13: 00000000000005dc R14: ffffc90000547010 R15: ffff88800a96af08
[   19.980895][  T313] FS:  00007f0a8bafd800(0000) GS:ffff888087eb7000(0000) knlGS:0000000000000000
[   19.981465][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.981875][  T313] CR2: 00000000004e5aa8 CR3: 0000000004ef6005 CR4: 0000000000772ef0
[   19.982369][  T313] PKRU: 55555554
[   19.982614][  T313] Call Trace:
[   19.982861][  T313]  <TASK>
[ 19.983028][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.983373][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.983703][ T313] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.984046][ T313] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.984443][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.984756][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 19.985065][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.985396][ T313] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.985837][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.986071][ T313] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.986521][ T313] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.986880][ T313] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.987193][ T313] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.987517][ T313] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.987908][ T313] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.988218][ T313] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.988532][ T313] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.988849][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.989160][ T313] ? __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) 
[ 19.989477][ T313] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.989863][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.990173][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.990496][ T313] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.990805][ T313] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.991112][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.991424][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.991729][ T313] ? __create_object (mm/kmemleak.c:771) 
[ 19.992038][ T313] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.992358][ T313] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.992665][ T313] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.993045][ T313] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.993367][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.993681][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.993989][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.994311][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.994627][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.994930][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.995239][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.995553][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.995861][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.996170][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.996506][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.996814][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.997126][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.997457][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.997762][ T313] ? 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) 
[ 19.998070][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.998387][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.998692][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.999003][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.999326][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.999634][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.999946][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.000256][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.000569][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.001228][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.001542][ T313] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.001857][ T313] ? __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) 
[ 20.002239][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.002580][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.002891][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.003202][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.003515][ T313] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.003815][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.004134][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.004668][ T313] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.005047][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.005377][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.005908][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.006220][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.006626][  T313] RIP: 0033:0x7f0a8bcca1e7
[ 20.007177][ T313] 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)
[   20.008264][  T313] RSP: 002b:00007ffd600d35d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.008744][  T313] RAX: ffffffffffffffda RBX: 00007ffd600d3d00 RCX: 00007f0a8bcca1e7
[   20.009491][  T313] RDX: 0000000000000000 RSI: 00007ffd600d3640 RDI: 0000000000000005
[   20.009983][  T313] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.010481][  T313] R10: 00000000019b9910 R11: 0000000000000246 R12: 0000000000000004
[   20.010975][  T313] R13: 00000000686e21a9 R14: 0000000000499600 R15: 0000000000000000
| [   39.713549][  T454] ------------[ cut here ]------------
| [ 39.713889][ T454] WARNING: CPU: 2 PID: 454 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) 
| [   39.714546][  T454] Modules linked in: bridge stp llc 8021q vrf veth
| [   39.715607][  T454] Tainted: [W]=WARN
[   39.715860][  T454] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 39.716253][ T454] 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) 
[ 39.716605][ T454] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 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 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   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 1a 63 7b 00       	call   0x7b633b
  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
[   39.717703][  T454] RSP: 0018:ffffc90000d06f70 EFLAGS: 00010246
[   39.718100][  T454] RAX: 0000000000000000 RBX: ffff88800a96a000 RCX: 0000000000000001
[   39.718587][  T454] RDX: 0000000000000000 RSI: ffffffffac29b941 RDI: ffffffffaba555e0
[   39.719051][  T454] RBP: ffffc90000d07058 R08: 0000000000000000 R09: 0000000000000000
[   39.719526][  T454] R10: ffffc90000d07088 R11: ffffffffa8600130 R12: 1ffff920001a0df2
[   39.719992][  T454] R13: 00000000000005dc R14: ffffc90000d07088 R15: ffff88800a96af08
[   39.720476][  T454] FS:  00007f35b3e4f800(0000) GS:ffff888087fb7000(0000) knlGS:0000000000000000
[   39.721019][  T454] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.721425][  T454] CR2: 00000000004e5aa8 CR3: 00000000057fa002 CR4: 0000000000772ef0
[   39.721890][  T454] PKRU: 55555554
[   39.722129][  T454] Call Trace:
[   39.722380][  T454]  <TASK>
[ 39.722553][ T454] ? __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) 
[ 39.722944][ T454] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 39.723323][ T454] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 39.723643][ T454] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 39.723959][ T454] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 39.724270][ T454] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 39.724601][ T454] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 39.724919][ T454] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 39.725237][ T454] ? ___sys_sendmsg (net/socket.c:2670) 
[ 39.725562][ T454] ? __sys_sendmsg (net/socket.c:2700) 
[ 39.725880][ T454] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 39.726194][ T454] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 39.726603][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.726928][ T454] netif_set_mtu (net/core/dev.c:9652) 
[ 39.727245][ T454] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 39.727593][ T454] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 39.727840][ T454] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 39.728269][ T454] br_del_if (net/bridge/br_if.c:743) bridge 
[ 39.728639][ T454] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 39.728953][ T454] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 39.729275][ T454] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 39.729606][ T454] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 39.730010][ T454] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 39.730335][ T454] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 39.730652][ T454] ? __kernel_text_address (kernel/extable.c:79) 
[ 39.730969][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.731291][ T454] ? __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) 
[ 39.731638][ T454] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 39.732034][ T454] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 39.732369][ T454] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 39.732687][ T454] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 39.733001][ T454] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 39.733332][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.733650][ T454] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 39.733965][ T454] ? __create_object (mm/kmemleak.c:771) 
[ 39.734282][ T454] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 39.734612][ T454] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 39.734930][ T454] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 39.735332][ T454] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 39.735663][ T454] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 39.735983][ T454] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 39.736296][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.736649][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.736965][ T454] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 39.737279][ T454] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 39.737617][ T454] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 39.737936][ T454] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 39.738253][ T454] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 39.738589][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.738909][ T454] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 39.739226][ T454] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 39.739556][ T454] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 39.739893][ T454] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 39.740206][ T454] ? 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) 
[ 39.740540][ T454] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 39.740859][ T454] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 39.741175][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.741507][ T454] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 39.741828][ T454] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 39.742150][ T454] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 39.742484][ T454] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 39.742804][ T454] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 39.743116][ T454] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 39.743532][ T454] ___sys_sendmsg (net/socket.c:2670) 
[ 39.743849][ T454] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 39.744163][ T454] ? __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) 
[ 39.744576][ T454] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 39.744895][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.745215][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.745549][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.745868][ T454] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 39.746183][ T454] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 39.746524][ T454] __sys_sendmsg (net/socket.c:2700) 
[ 39.746836][ T454] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 39.747229][ T454] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 39.747568][ T454] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 39.747889][ T454] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 39.748205][ T454] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   39.748606][  T454] RIP: 0033:0x7f35b401c1e7
[ 39.748932][ T454] 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)
[   39.750034][  T454] RSP: 002b:00007ffc5fdf7148 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   39.750516][  T454] RAX: ffffffffffffffda RBX: 00007ffc5fdf7870 RCX: 00007f35b401c1e7
[   39.750982][  T454] RDX: 0000000000000000 RSI: 00007ffc5fdf71b0 RDI: 0000000000000005
[   39.751462][  T454] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   39.751930][  T454] R10: 00007f35b3f19ee8 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