======================================
| [   21.523241][  T322] veth1: entered promiscuous mode
| [   21.524763][  T322] ------------[ cut here ]------------
| [ 21.525138][ T322] WARNING: CPU: 2 PID: 322 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) 
| [   21.525815][  T322] Modules linked in: bridge stp llc 8021q vrf veth
[   21.526944][  T322] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.527392][ T322] 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) 
[ 21.527750][ T322] 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
[   21.528963][  T322] RSP: 0018:ffffc90000666ef0 EFLAGS: 00010246
[   21.529409][  T322] RAX: 0000000000000000 RBX: ffff8880094a2000 RCX: 0000000000000001
[   21.529930][  T322] RDX: 0000000000000000 RSI: ffffffffb5a9b941 RDI: ffffffffb52555e0
[   21.530442][  T322] RBP: ffffc90000666fe0 R08: 0000000000000000 R09: 0000000000000000
[   21.531144][  T322] R10: ffffc90000667010 R11: ffffffffb68a8918 R12: 1ffff920000ccde2
[   21.531657][  T322] R13: 00000000000005dc R14: ffffc90000667010 R15: ffff8880094a2f08
[   21.532174][  T322] FS:  00007f9a78c4e800(0000) GS:ffff8880779b7000(0000) knlGS:0000000000000000
[   21.532762][  T322] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.533198][  T322] CR2: 00000000004e5aa8 CR3: 000000000255b001 CR4: 0000000000772ef0
[   21.533718][  T322] PKRU: 55555554
[   21.533987][  T322] Call Trace:
[   21.534252][  T322]  <TASK>
[ 21.534438][ T322] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.534790][ T322] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.535148][ T322] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 21.535488][ T322] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 21.535916][ T322] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 21.536265][ T322] netif_set_mtu (net/core/dev.c:9652) 
[ 21.536611][ T322] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.536980][ T322] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 21.537452][ T322] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.537713][ T322] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 21.538202][ T322] br_add_if (net/bridge/br_if.c:697) bridge 
[ 21.538590][ T322] do_set_master (net/core/rtnetlink.c:2948) 
[ 21.538954][ T322] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 21.539302][ T322] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 21.539763][ T322] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 21.540119][ T322] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 21.540461][ T322] ? __kernel_text_address (kernel/extable.c:79) 
[ 21.540816][ T322] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.541161][ T322] ? __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) 
[ 21.541508][ T322] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 21.541939][ T322] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.542284][ T322] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.542623][ T322] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 21.542972][ T322] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 21.543313][ T322] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.543655][ T322] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.544007][ T322] ? __create_object (mm/kmemleak.c:771) 
[ 21.544352][ T322] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 21.544693][ T322] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 21.545046][ T322] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.545465][ T322] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 21.545823][ T322] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.546168][ T322] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.546510][ T322] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.546887][ T322] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.547238][ T322] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.547575][ T322] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.547932][ T322] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.548274][ T322] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.548618][ T322] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.548974][ T322] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.549337][ T322] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.549668][ T322] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.550021][ T322] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.550387][ T322] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.550730][ T322] ? 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) 
[ 21.551090][ T322] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 21.551445][ T322] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.551801][ T322] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.552146][ T322] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.552486][ T322] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.553093][ T322] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.553444][ T322] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.554253][ T322] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.554598][ T322] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.555275][ T322] ___sys_sendmsg (net/socket.c:2670) 
[ 21.555618][ T322] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 21.555968][ T322] ? __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) 
[ 21.556393][ T322] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.556752][ T322] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.557125][ T322] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.557474][ T322] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.558067][ T322] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 21.558417][ T322] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.559231][ T322] __sys_sendmsg (net/socket.c:2700) 
[ 21.559582][ T322] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 21.560018][ T322] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.560376][ T322] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.560719][ T322] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.561075][ T322] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.561740][  T322] RIP: 0033:0x7f9a78e1b1e7
[ 21.562348][ T322] 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)
[   21.563582][  T322] RSP: 002b:00007ffe65d4dfc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.564131][  T322] RAX: ffffffffffffffda RBX: 00007ffe65d4e6f0 RCX: 00007f9a78e1b1e7
[   21.564654][  T322] RDX: 0000000000000000 RSI: 00007ffe65d4e030 RDI: 0000000000000005
[   21.565418][  T322] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.565953][  T322] R10: 0000000010bd2910 R11: 0000000000000246 R12: 0000000000000004
[   21.566457][  T322] R13: 00000000686e14e6 R14: 0000000000499600 R15: 0000000000000000
| [   55.465490][  T503] ------------[ cut here ]------------
| [ 55.466084][ T503] WARNING: CPU: 3 PID: 503 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) 
| [   55.466721][  T503] Modules linked in: bridge stp llc 8021q vrf veth
| [   55.467820][  T503] Tainted: [W]=WARN
[   55.468061][  T503] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 55.468450][ T503] 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) 
[ 55.468767][ T503] 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
[   55.470141][  T503] RSP: 0018:ffffc90000df6f70 EFLAGS: 00010246
[   55.470540][  T503] RAX: 0000000000000000 RBX: ffff8880094a2000 RCX: 0000000000000001
[   55.471220][  T503] RDX: 0000000000000000 RSI: ffffffffb5a9b941 RDI: ffffffffb52555e0
[   55.471707][  T503] RBP: ffffc90000df7058 R08: 0000000000000000 R09: 0000000000000000
[   55.472341][  T503] R10: ffffc90000df7088 R11: ffffffffb1e00130 R12: 1ffff920001bedf2
[   55.472987][  T503] R13: 00000000000005dc R14: ffffc90000df7088 R15: ffff8880094a2f08
[   55.473444][  T503] FS:  00007f7ce6a73800(0000) GS:ffff888077a37000(0000) knlGS:0000000000000000
[   55.474214][  T503] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   55.474604][  T503] CR2: 00000000004e5aa8 CR3: 000000000cb60001 CR4: 0000000000772ef0
[   55.475157][  T503] PKRU: 55555554
[   55.475386][  T503] Call Trace:
[   55.475613][  T503]  <TASK>
[ 55.475767][ T503] ? __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) 
[ 55.476161][ T503] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 55.476509][ T503] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 55.476846][ T503] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 55.477159][ T503] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 55.477465][ T503] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 55.477799][ T503] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 55.478105][ T503] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 55.478412][ T503] ? ___sys_sendmsg (net/socket.c:2670) 
[ 55.478728][ T503] ? __sys_sendmsg (net/socket.c:2700) 
[ 55.479038][ T503] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 55.479351][ T503] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 55.479745][ T503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.480069][ T503] netif_set_mtu (net/core/dev.c:9652) 
[ 55.480375][ T503] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 55.480710][ T503] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 55.480961][ T503] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 55.481399][ T503] br_del_if (net/bridge/br_if.c:743) bridge 
[ 55.481756][ T503] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 55.482082][ T503] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 55.482397][ T503] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 55.482704][ T503] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 55.483097][ T503] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 55.483397][ T503] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 55.483700][ T503] ? __kernel_text_address (kernel/extable.c:79) 
[ 55.484037][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.484344][ T503] ? __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) 
[ 55.484658][ T503] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 55.485044][ T503] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.485351][ T503] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.485656][ T503] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 55.485979][ T503] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 55.486288][ T503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.486598][ T503] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 55.486915][ T503] ? __create_object (mm/kmemleak.c:771) 
[ 55.487218][ T503] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 55.487522][ T503] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 55.487835][ T503] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 55.488210][ T503] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 55.488518][ T503] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 55.488841][ T503] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 55.489142][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.489450][ T503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.489756][ T503] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 55.490076][ T503] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 55.490381][ T503] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 55.490689][ T503] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 55.491016][ T503] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 55.491343][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.491654][ T503] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 55.491967][ T503] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 55.492270][ T503] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 55.492582][ T503] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 55.492895][ T503] ? 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) 
[ 55.493202][ T503] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 55.493521][ T503] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 55.493845][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.494159][ T503] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 55.494466][ T503] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 55.494806][ T503] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 55.495133][ T503] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 55.495439][ T503] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 55.495749][ T503] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 55.496144][ T503] ___sys_sendmsg (net/socket.c:2670) 
[ 55.496444][ T503] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 55.496746][ T503] ? __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) 
[ 55.497141][ T503] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 55.497447][ T503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.497754][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.498086][ T503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.498395][ T503] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 55.498700][ T503] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 55.499035][ T503] __sys_sendmsg (net/socket.c:2700) 
[ 55.499337][ T503] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 55.499715][ T503] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 55.500037][ T503] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.500342][ T503] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 55.500650][ T503] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   55.501035][  T503] RIP: 0033:0x7f7ce6c401e7
[ 55.501348][ T503] 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)
[   55.502451][  T503] RSP: 002b:00007ffc18aa1238 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   55.502930][  T503] RAX: ffffffffffffffda RBX: 00007ffc18aa1960 RCX: 00007f7ce6c401e7
[   55.503385][  T503] RDX: 0000000000000000 RSI: 00007ffc18aa12a0 RDI: 0000000000000005
[   55.503847][  T503] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   55.504300][  T503] R10: 00007f7ce6b3dee8 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