======================================
| [   19.839373][  T311] veth1: entered promiscuous mode
| [   19.840613][  T311] ------------[ cut here ]------------
| [ 19.840932][ T311] WARNING: CPU: 3 PID: 311 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) 
| [   19.841760][  T311] Modules linked in: bridge stp llc 8021q vrf veth
[   19.842800][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.843192][ T311] 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) 
[ 19.843524][ T311] 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
[   19.844639][  T311] RSP: 0018:ffffc90000536ef0 EFLAGS: 00010246
[   19.845033][  T311] RAX: 0000000000000000 RBX: ffff88800912a000 RCX: 0000000000000001
[   19.845522][  T311] RDX: 0000000000000000 RSI: ffffffff9229b941 RDI: ffffffff91a555e0
[   19.845990][  T311] RBP: ffffc90000536fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.846462][  T311] R10: ffffc90000537010 R11: ffffffff930a8918 R12: 1ffff920000a6de2
[   19.846927][  T311] R13: 00000000000005dc R14: ffffc90000537010 R15: ffff88800912af08
[   19.847412][  T311] FS:  00007f2385aef800(0000) GS:ffff8880a2037000(0000) knlGS:0000000000000000
[   19.847955][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.848353][  T311] CR2: 00000000004e5aa8 CR3: 000000000a3da001 CR4: 0000000000772ef0
[   19.848821][  T311] PKRU: 55555554
[   19.849056][  T311] Call Trace:
[   19.849297][  T311]  <TASK>
[ 19.849471][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.849790][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.850107][ T311] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.850446][ T311] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.850849][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.851174][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 19.851512][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.851853][ T311] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.852302][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.852556][ T311] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.852997][ T311] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.853380][ T311] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.853708][ T311] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.854040][ T311] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.854459][ T311] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.854787][ T311] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.855111][ T311] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.855446][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.855777][ T311] ? __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) 
[ 19.856110][ T311] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.856514][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.856852][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.857174][ T311] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.857530][ T311] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.857843][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.858180][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.858516][ T311] ? __create_object (mm/kmemleak.c:771) 
[ 19.858844][ T311] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.859175][ T311] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.859508][ T311] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.859910][ T311] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.860242][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.860589][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.860912][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.861244][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.861560][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.861882][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.862208][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.862537][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.862866][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.863192][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.863529][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.863857][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.864182][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.864520][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.864845][ T311] ? 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) 
[ 19.865171][ T311] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.865506][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.865833][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.866161][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.866755][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.867073][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.867401][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.867711][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.868014][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.868640][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 19.869396][ T311] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.869705][ T311] ? __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) 
[ 19.870088][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.870642][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.870950][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.871492][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.872026][ T311] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.872792][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.873111][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 19.873424][ T311] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.874032][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.874360][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.874670][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.875448][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.876066][  T311] RIP: 0033:0x7f2385cbc1e7
[ 19.876395][ T311] 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)
[   19.877737][  T311] RSP: 002b:00007ffd5fa4c828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.878220][  T311] RAX: ffffffffffffffda RBX: 00007ffd5fa4cf50 RCX: 00007f2385cbc1e7
[   19.878689][  T311] RDX: 0000000000000000 RSI: 00007ffd5fa4c890 RDI: 0000000000000005
[   19.879153][  T311] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.879623][  T311] R10: 0000000001ebf910 R11: 0000000000000246 R12: 0000000000000004
[   19.880081][  T311] R13: 00000000686e4bd2 R14: 0000000000499600 R15: 0000000000000000
| [   39.625639][  T453] ------------[ cut here ]------------
| [ 39.625985][ T453] WARNING: CPU: 1 PID: 453 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) 
| [   39.626637][  T453] Modules linked in: bridge stp llc 8021q vrf veth
| [   39.627683][  T453] Tainted: [W]=WARN
[   39.627923][  T453] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 39.628314][ T453] 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) 
[ 39.628646][ T453] 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
[   39.629787][  T453] RSP: 0018:ffffc90000cd6f70 EFLAGS: 00010246
[   39.630207][  T453] RAX: 0000000000000000 RBX: ffff88800912a000 RCX: 0000000000000001
[   39.630719][  T453] RDX: 0000000000000000 RSI: ffffffff9229b941 RDI: ffffffff91a555e0
[   39.631211][  T453] RBP: ffffc90000cd7058 R08: 0000000000000000 R09: 0000000000000000
[   39.631700][  T453] R10: ffffc90000cd7088 R11: ffffffff8e600130 R12: 1ffff9200019adf2
[   39.632174][  T453] R13: 00000000000005dc R14: ffffc90000cd7088 R15: ffff88800912af08
[   39.632679][  T453] FS:  00007fb20d78a800(0000) GS:ffff8880a1f37000(0000) knlGS:0000000000000000
[   39.633237][  T453] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   39.633633][  T453] CR2: 00000000004e5aa8 CR3: 00000000094f4003 CR4: 0000000000772ef0
[   39.634089][  T453] PKRU: 55555554
[   39.634341][  T453] Call Trace:
[   39.634574][  T453]  <TASK>
[ 39.634728][ T453] ? __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) 
[ 39.635117][ T453] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 39.635512][ T453] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 39.635823][ T453] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 39.636126][ T453] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 39.636482][ T453] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 39.636787][ T453] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 39.637085][ T453] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 39.637424][ T453] ? ___sys_sendmsg (net/socket.c:2670) 
[ 39.637730][ T453] ? __sys_sendmsg (net/socket.c:2700) 
[ 39.638031][ T453] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 39.638384][ T453] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 39.638780][ T453] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.639092][ T453] netif_set_mtu (net/core/dev.c:9652) 
[ 39.639419][ T453] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 39.639742][ T453] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 39.639978][ T453] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 39.640469][ T453] br_del_if (net/bridge/br_if.c:743) bridge 
[ 39.640826][ T453] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 39.641130][ T453] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 39.641477][ T453] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 39.641788][ T453] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 39.642183][ T453] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 39.642513][ T453] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 39.642818][ T453] ? __kernel_text_address (kernel/extable.c:79) 
[ 39.643125][ T453] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.643460][ T453] ? __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) 
[ 39.643772][ T453] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 39.644149][ T453] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 39.644499][ T453] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 39.644817][ T453] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 39.645120][ T453] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 39.645443][ T453] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.645748][ T453] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 39.646055][ T453] ? __create_object (mm/kmemleak.c:771) 
[ 39.646381][ T453] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 39.646687][ T453] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 39.646989][ T453] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 39.647379][ T453] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 39.647694][ T453] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 39.648004][ T453] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 39.648307][ T453] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.648626][ T453] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.648929][ T453] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 39.649229][ T453] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 39.649553][ T453] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 39.649871][ T453] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 39.650190][ T453] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 39.650533][ T453] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.650845][ T453] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 39.651152][ T453] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 39.651466][ T453] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 39.651783][ T453] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 39.652111][ T453] ? 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) 
[ 39.652428][ T453] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 39.652753][ T453] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 39.653060][ T453] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.653378][ T453] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 39.653685][ T453] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 39.653990][ T453] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 39.654311][ T453] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 39.654635][ T453] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 39.654945][ T453] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 39.655369][ T453] ___sys_sendmsg (net/socket.c:2670) 
[ 39.655678][ T453] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 39.655981][ T453] ? __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) 
[ 39.656369][ T453] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 39.656689][ T453] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.656997][ T453] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 39.657306][ T453] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 39.657624][ T453] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 39.657929][ T453] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 39.658251][ T453] __sys_sendmsg (net/socket.c:2700) 
[ 39.658566][ T453] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 39.658953][ T453] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 39.659266][ T453] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 39.659584][ T453] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 39.659888][ T453] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   39.660268][  T453] RIP: 0033:0x7fb20d9571e7
[ 39.660610][ T453] 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)
[   39.661714][  T453] RSP: 002b:00007ffd26990f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   39.662174][  T453] RAX: ffffffffffffffda RBX: 00007ffd26991650 RCX: 00007fb20d9571e7
[   39.662638][  T453] RDX: 0000000000000000 RSI: 00007ffd26990f90 RDI: 0000000000000005
[   39.663099][  T453] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   39.663576][  T453] R10: 00007fb20d854ee8 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