======================================
| [   20.169644][  T313] veth1: entered promiscuous mode
| [   20.170950][  T313] ------------[ cut here ]------------
| [ 20.171643][ T313] WARNING: CPU: 3 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) 
| [   20.172318][  T313] Modules linked in: bridge stp llc 8021q vrf veth
[   20.173476][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.173896][ 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) 
[ 20.174269][ T313] 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
[   20.175758][  T313] RSP: 0018:ffffc90000646ef0 EFLAGS: 00010246
[   20.176198][  T313] RAX: 0000000000000000 RBX: ffff8880096e2000 RCX: 0000000000000001
[   20.176695][  T313] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   20.177210][  T313] RBP: ffffc90000646fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.177713][  T313] R10: ffffc90000647010 R11: ffffffff9e0a8918 R12: 1ffff920000c8de2
[   20.178218][  T313] R13: 00000000000005dc R14: ffffc90000647010 R15: ffff8880096e2f08
[   20.178727][  T313] FS:  00007f51208dc800(0000) GS:ffff888097037000(0000) knlGS:0000000000000000
[   20.179320][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.179745][  T313] CR2: 00000000004e5aa8 CR3: 0000000004e08005 CR4: 0000000000772ef0
[   20.180257][  T313] PKRU: 55555554
[   20.180515][  T313] Call Trace:
[   20.180763][  T313]  <TASK>
[ 20.180942][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.181285][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.181625][ T313] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.181949][ T313] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.182368][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.182699][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.183058][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.183409][ T313] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.183873][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.184154][ T313] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.184617][ T313] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.184988][ T313] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 20.185340][ T313] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.185671][ T313] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.186092][ T313] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.186422][ T313] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.186749][ T313] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.187089][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.187423][ 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) 
[ 20.187759][ T313] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.188170][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.188500][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.188827][ T313] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.189162][ T313] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.189491][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.189816][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.190147][ T313] ? __create_object (mm/kmemleak.c:771) 
[ 20.190480][ T313] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.190807][ T313] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.191140][ T313] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.191545][ T313] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.191878][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.192229][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.192556][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.192892][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.193240][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.193567][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.193897][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.194235][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.194576][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.194911][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.195253][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.195581][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.195909][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.196255][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.196584][ 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) 
[ 20.196919][ T313] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.197258][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.197584][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.197913][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.198261][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.198596][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.198941][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.199287][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.199619][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.200058][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.200382][ T313] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.200716][ 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) 
[ 20.201143][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.201480][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.201820][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.202188][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.202800][ 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) 
[ 20.203134][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.203479][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.203809][ T313] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.204487][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.204846][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.205420][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.205738][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.206152][  T313] RIP: 0033:0x7f5120aa91e7
[ 20.206482][ 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)
[   20.207887][  T313] RSP: 002b:00007ffdf763b508 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.208837][  T313] RAX: ffffffffffffffda RBX: 00007ffdf763bc30 RCX: 00007f5120aa91e7
[   20.209779][  T313] RDX: 0000000000000000 RSI: 00007ffdf763b570 RDI: 0000000000000005
[   20.210266][  T313] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.210732][  T313] R10: 00000000404a8910 R11: 0000000000000246 R12: 0000000000000004
[   20.211215][  T313] R13: 00000000686e6a59 R14: 0000000000499600 R15: 0000000000000000
| [   40.023131][  T454] ------------[ cut here ]------------
| [ 40.023524][ T454] WARNING: CPU: 1 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) 
| [   40.024277][  T454] Modules linked in: bridge stp llc 8021q vrf veth
| [   40.025486][  T454] Tainted: [W]=WARN
[   40.025760][  T454] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.026213][ 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) 
[ 40.026579][ T454] 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
[   40.027831][  T454] RSP: 0018:ffffc90000d26f70 EFLAGS: 00010246
[   40.028305][  T454] RAX: 0000000000000000 RBX: ffff8880096e2000 RCX: 0000000000000001
[   40.028840][  T454] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   40.030899][  T454] RBP: ffffc90000d27058 R08: 0000000000000000 R09: 0000000000000000
[   40.031621][  T454] R10: ffffc90000d27088 R11: ffffffff9a5224d4 R12: 1ffff920001a4df2
[   40.032206][  T454] R13: 00000000000005dc R14: ffffc90000d27088 R15: ffff8880096e2f08
[   40.032726][  T454] FS:  00007f87496f0800(0000) GS:ffff888096f37000(0000) knlGS:0000000000000000
[   40.033341][  T454] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.033780][  T454] CR2: 00000000004e5aa8 CR3: 000000000b14d003 CR4: 0000000000772ef0
[   40.034318][  T454] PKRU: 55555554
[   40.034594][  T454] Call Trace:
[   40.034856][  T454]  <TASK>
[ 40.035054][ 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) 
[ 40.035517][ T454] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 40.035908][ T454] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 40.036284][ T454] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 40.036643][ T454] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.036990][ T454] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 40.037360][ T454] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.037710][ T454] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.038076][ T454] ? ___sys_sendmsg (net/socket.c:2670) 
[ 40.038420][ T454] ? __sys_sendmsg (net/socket.c:2700) 
[ 40.038762][ T454] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.039132][ T454] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 40.039575][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.039937][ T454] netif_set_mtu (net/core/dev.c:9652) 
[ 40.040312][ T454] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 40.040677][ T454] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 40.040940][ T454] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 40.041427][ T454] br_del_if (net/bridge/br_if.c:743) bridge 
[ 40.041807][ T454] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 40.042162][ T454] do_set_master (net/core/rtnetlink.c:2932) 
[ 40.042519][ T454] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 40.042869][ T454] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.043331][ T454] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.043682][ T454] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.044050][ T454] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.044413][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.044781][ 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) 
[ 40.045146][ T454] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.045578][ T454] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.045927][ T454] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.046282][ T454] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.046627][ T454] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.046979][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.047335][ T454] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.047700][ T454] ? __create_object (mm/kmemleak.c:771) 
[ 40.048080][ T454] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.048429][ T454] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.048791][ T454] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.049229][ T454] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.049581][ T454] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.049935][ T454] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.050289][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.050650][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.050994][ T454] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.051347][ T454] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.051700][ T454] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.052064][ T454] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.052412][ T454] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.052760][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.053127][ T454] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.053479][ T454] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.053827][ T454] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.054191][ T454] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.054548][ 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) 
[ 40.054897][ T454] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 40.055257][ T454] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.055608][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.055957][ T454] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.056324][ T454] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.056674][ T454] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.057051][ T454] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.057403][ T454] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.057746][ T454] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.058202][ T454] ___sys_sendmsg (net/socket.c:2670) 
[ 40.058546][ T454] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.058896][ 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) 
[ 40.059339][ T454] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.059689][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.060061][ T454] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.060415][ T454] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.060760][ 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) 
[ 40.061133][ T454] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.061488][ T454] __sys_sendmsg (net/socket.c:2700) 
[ 40.061834][ T454] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.062275][ T454] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.062633][ T454] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.062981][ T454] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.063343][ T454] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.063783][  T454] RIP: 0033:0x7f87498bd1e7
[ 40.064172][ 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)
[   40.065443][  T454] RSP: 002b:00007fffbd857488 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.065983][  T454] RAX: ffffffffffffffda RBX: 00007fffbd857bb0 RCX: 00007f87498bd1e7
[   40.066514][  T454] RDX: 0000000000000000 RSI: 00007fffbd8574f0 RDI: 0000000000000005
[   40.067053][  T454] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   40.067578][  T454] R10: 00007f87497baee8 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