======================================
| [   20.072250][  T314] veth1: entered promiscuous mode
| [   20.073513][  T314] ------------[ cut here ]------------
| [ 20.073844][ T314] WARNING: CPU: 3 PID: 314 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) 
| [   20.074462][  T314] Modules linked in: bridge stp llc 8021q vrf veth
[   20.075541][  T314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.076231][ T314] 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) 
[ 20.076566][ T314] 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
[   20.077730][  T314] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   20.078127][  T314] RAX: 0000000000000000 RBX: ffff88800c09a000 RCX: 0000000000000001
[   20.078593][  T314] RDX: 0000000000000000 RSI: ffffffffb929b941 RDI: ffffffffb8a555e0
[   20.079064][  T314] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.079534][  T314] R10: ffffc90000577010 R11: ffffffffba0a8918 R12: 1ffff920000aede2
[   20.080011][  T314] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800c09af08
[   20.080478][  T314] FS:  00007faa8f305800(0000) GS:ffff88807b037000(0000) knlGS:0000000000000000
[   20.081031][  T314] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.081431][  T314] CR2: 00000000004e5aa8 CR3: 0000000004d80005 CR4: 0000000000772ef0
[   20.081917][  T314] PKRU: 55555554
[   20.082158][  T314] Call Trace:
[   20.082396][  T314]  <TASK>
[ 20.082557][ T314] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.082885][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.083203][ T314] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.083514][ T314] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.083908][ T314] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.084227][ T314] netif_set_mtu (net/core/dev.c:9652) 
[ 20.084541][ T314] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.084870][ T314] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.085308][ T314] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.085544][ T314] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.085977][ T314] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.086343][ T314] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.086659][ T314] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.086982][ T314] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.087375][ T314] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.087688][ T314] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.088005][ T314] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.088323][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.088645][ T314] ? __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) 
[ 20.088965][ T314] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.089351][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.089665][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.089980][ T314] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.090291][ T314] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.090603][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.090928][ T314] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.091251][ T314] ? __create_object (mm/kmemleak.c:771) 
[ 20.091842][ T314] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.092154][ T314] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.092461][ T314] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.092850][ T314] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.093386][ T314] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.093708][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.094021][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.094336][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.094876][ T314] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.095181][ T314] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.095495][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.095808][ T314] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.096342][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.096653][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.096981][ T314] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.097288][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.097829][ T314] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.098250][ T314] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.098586][ T314] ? 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) 
[ 20.098908][ T314] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.099464][ T314] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.099788][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.100104][ T314] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.100425][ T314] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.100977][ T314] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.101310][ T314] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.101628][ T314] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.101955][ T314] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.102593][ T314] ___sys_sendmsg (net/socket.c:2670) 
[ 20.102915][ T314] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.103235][ T314] ? __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) 
[ 20.103855][ T314] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.104262][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.104582][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.104908][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.105447][ T314] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.105766][ T314] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.106083][ T314] __sys_sendmsg (net/socket.c:2700) 
[ 20.106389][ T314] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.106999][ T314] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.107318][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.107624][ T314] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.107947][ T314] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.108550][  T314] RIP: 0033:0x7faa8f4d21e7
[ 20.108882][ T314] 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)
[   20.110251][  T314] RSP: 002b:00007ffc939d5908 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.110734][  T314] RAX: ffffffffffffffda RBX: 00007ffc939d6030 RCX: 00007faa8f4d21e7
[   20.111433][  T314] RDX: 0000000000000000 RSI: 00007ffc939d5970 RDI: 0000000000000005
[   20.111910][  T314] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.112377][  T314] R10: 0000000011333910 R11: 0000000000000246 R12: 0000000000000004
[   20.113120][  T314] R13: 00000000686e16b1 R14: 0000000000499600 R15: 0000000000000000
| [   40.049009][  T456] ------------[ cut here ]------------
| [ 40.049357][ T456] WARNING: CPU: 2 PID: 456 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) 
| [   40.050192][  T456] Modules linked in: bridge stp llc 8021q vrf veth
| [   40.051803][  T456] Tainted: [W]=WARN
[   40.052271][  T456] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.052835][ T456] 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) 
[ 40.053215][ T456] 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
[   40.054391][  T456] RSP: 0018:ffffc90000ce6f70 EFLAGS: 00010246
[   40.054810][  T456] RAX: 0000000000000000 RBX: ffff88800c09a000 RCX: 0000000000000001
[   40.055283][  T456] RDX: 0000000000000000 RSI: ffffffffb929b941 RDI: ffffffffb8a555e0
[   40.055768][  T456] RBP: ffffc90000ce7058 R08: 0000000000000000 R09: 0000000000000000
[   40.056245][  T456] R10: ffffc90000ce7088 R11: ffffffffb5600130 R12: 1ffff9200019cdf2
[   40.056756][  T456] R13: 00000000000005dc R14: ffffc90000ce7088 R15: ffff88800c09af08
[   40.057231][  T456] FS:  00007f4b82684800(0000) GS:ffff88807afb7000(0000) knlGS:0000000000000000
[   40.057790][  T456] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.058194][  T456] CR2: 00000000004e5aa8 CR3: 000000000bec9006 CR4: 0000000000772ef0
[   40.058718][  T456] PKRU: 55555554
[   40.058982][  T456] Call Trace:
[   40.059224][  T456]  <TASK>
[ 40.059393][ T456] ? __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) 
[ 40.059807][ T456] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 40.060174][ T456] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 40.060497][ T456] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 40.060834][ T456] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.061159][ T456] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.061494][ T456] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.061819][ T456] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.062145][ T456] ? ___sys_sendmsg (net/socket.c:2670) 
[ 40.062508][ T456] ? __sys_sendmsg (net/socket.c:2700) 
[ 40.062842][ T456] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.063161][ T456] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 40.063570][ T456] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.063916][ T456] netif_set_mtu (net/core/dev.c:9652) 
[ 40.064247][ T456] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 40.064582][ T456] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 40.064854][ T456] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 40.065295][ T456] br_del_if (net/bridge/br_if.c:743) bridge 
[ 40.065650][ T456] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 40.065986][ T456] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 40.066347][ T456] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 40.066679][ T456] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.067099][ T456] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.067418][ T456] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.067749][ T456] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.068074][ T456] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.068399][ T456] ? __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) 
[ 40.068742][ T456] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.069145][ T456] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.069465][ T456] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.069794][ T456] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.070110][ T456] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.070480][ T456] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.070822][ T456] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.071143][ T456] ? __create_object (mm/kmemleak.c:771) 
[ 40.071490][ T456] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.071847][ T456] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.072177][ T456] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.072581][ T456] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.072936][ T456] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.073289][ T456] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.073624][ T456] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.073969][ T456] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.074328][ T456] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.074681][ T456] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.075016][ T456] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.075337][ T456] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.075657][ T456] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.075996][ T456] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.076321][ T456] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.076642][ T456] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.076990][ T456] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.077344][ T456] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.077666][ T456] ? 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) 
[ 40.077998][ T456] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.078360][ T456] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.078685][ T456] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.079026][ T456] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.079358][ T456] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.079674][ T456] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.080019][ T456] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.080342][ T456] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.080661][ T456] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.081093][ T456] ___sys_sendmsg (net/socket.c:2670) 
[ 40.081430][ T456] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.081768][ T456] ? __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) 
[ 40.082164][ T456] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.082522][ T456] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.082864][ T456] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.083190][ T456] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.083508][ T456] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.083842][ T456] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.084185][ T456] __sys_sendmsg (net/socket.c:2700) 
[ 40.084502][ T456] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.084917][ T456] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.085247][ T456] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.085566][ T456] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.085893][ T456] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.086325][  T456] RIP: 0033:0x7f4b828511e7
[ 40.086665][ T456] 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)
[   40.087782][  T456] RSP: 002b:00007ffdc6923368 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.088259][  T456] RAX: ffffffffffffffda RBX: 00007ffdc6923a90 RCX: 00007f4b828511e7
[   40.088759][  T456] RDX: 0000000000000000 RSI: 00007ffdc69233d0 RDI: 0000000000000005
[   40.089236][  T456] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   40.089720][  T456] R10: 00007f4b8274eee8 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