======================================
| [   21.322600][  T318] veth1: entered promiscuous mode
| [   21.326943][  T318] ------------[ cut here ]------------
| [ 21.327508][ T318] WARNING: CPU: 3 PID: 318 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) 
| [   21.328613][  T318] Modules linked in: bridge stp llc sch_ingress vrf veth
[   21.330794][  T318] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.331499][ T318] 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) 
[ 21.332291][ T318] 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
[   21.334321][  T318] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   21.336580][  T318] RAX: 0000000000000000 RBX: ffff888004efa000 RCX: 0000000000000001
[   21.337382][  T318] RDX: 0000000000000000 RSI: ffffffffb629b941 RDI: ffffffffb5a555e0
[   21.338678][  T318] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   21.339497][  T318] R10: ffffc90000557010 R11: ffffffffb70a8918 R12: 1ffff920000aade2
[   21.340672][  T318] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff888004efaf08
[   21.341531][  T318] FS:  00007fc701966800(0000) GS:ffff888077237000(0000) knlGS:0000000000000000
[   21.343273][  T318] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.344277][  T318] CR2: 00000000004e5aa8 CR3: 000000000c0c2005 CR4: 0000000000772ef0
[   21.345358][  T318] PKRU: 55555554
[   21.345793][  T318] Call Trace:
[   21.346205][  T318]  <TASK>
[ 21.346494][ T318] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.347078][ T318] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.347652][ T318] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 21.348191][ T318] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 21.348880][ T318] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 21.349453][ T318] netif_set_mtu (net/core/dev.c:9652) 
[ 21.350024][ T318] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.350595][ T318] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 21.351352][ T318] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.351781][ T318] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 21.352555][ T318] br_add_if (net/bridge/br_if.c:697) bridge 
[ 21.353197][ T318] do_set_master (net/core/rtnetlink.c:2948) 
[ 21.353790][ T318] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 21.354325][ T318] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 21.355064][ T318] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 21.355644][ T318] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 21.356200][ T318] ? __kernel_text_address (kernel/extable.c:79) 
[ 21.356774][ T318] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.357342][ T318] ? __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) 
[ 21.357930][ T318] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 21.358645][ T318] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.359217][ T318] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.359802][ T318] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 21.360364][ T318] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 21.360938][ T318] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.361505][ T318] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.362092][ T318] ? __create_object (mm/kmemleak.c:771) 
[ 21.362671][ T318] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 21.363235][ T318] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 21.363773][ T318] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.364473][ T318] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 21.365048][ T318] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.365622][ T318] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.366162][ T318] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.366755][ T318] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.367314][ T318] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.367882][ T318] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.368449][ T318] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.369020][ T318] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.369450][ T318] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.369778][ T318] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.370113][ T318] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.370428][ T318] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.370750][ T318] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.371074][ T318] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.371383][ T318] ? 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) 
[ 21.371713][ T318] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 21.372037][ T318] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.372356][ T318] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.372683][ T318] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.372991][ T318] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.373297][ T318] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.373617][ T318] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.373959][ T318] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.374265][ T318] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.374689][ T318] ___sys_sendmsg (net/socket.c:2670) 
[ 21.375003][ T318] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 21.375308][ T318] ? __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) 
[ 21.375707][ T318] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.376015][ T318] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.376324][ T318] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.376646][ T318] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.376950][ T318] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 21.377261][ T318] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.377586][ T318] __sys_sendmsg (net/socket.c:2700) 
[ 21.377888][ T318] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 21.378267][ T318] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.378595][ T318] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.378904][ T318] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.379211][ T318] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.379648][  T318] RIP: 0033:0x7fc701b331e7
[ 21.379981][ T318] 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)
[   21.381083][  T318] RSP: 002b:00007fff78ce1578 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.381574][  T318] RAX: ffffffffffffffda RBX: 00007fff78ce1ca0 RCX: 00007fc701b331e7
[   21.382038][  T318] RDX: 0000000000000000 RSI: 00007fff78ce15e0 RDI: 0000000000000005
[   21.382499][  T318] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.382970][  T318] R10: 0000000038fec910 R11: 0000000000000246 R12: 0000000000000004
[   21.383435][  T318] R13: 00000000686e1335 R14: 0000000000499600 R15: 0000000000000000
| [   21.630880][  T320] ------------[ cut here ]------------
| [ 21.631203][ T320] WARNING: CPU: 1 PID: 320 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) 
| [   21.632155][  T320] Modules linked in: bridge stp llc sch_ingress vrf veth
| [   21.633223][  T320] Tainted: [W]=WARN
[   21.633480][  T320] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.633881][ T320] 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) 
[ 21.634228][ T320] 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
[   21.635367][  T320] RSP: 0018:ffffc90000636ef0 EFLAGS: 00010246
[   21.635767][  T320] RAX: 0000000000000000 RBX: ffff888004efa000 RCX: 0000000000000001
[   21.636258][  T320] RDX: 0000000000000000 RSI: ffffffffb629b941 RDI: ffffffffb5a555e0
[   21.636722][  T320] RBP: ffffc90000636fe0 R08: 0000000000000000 R09: 0000000000000000
[   21.637387][  T320] R10: ffffc90000637010 R11: ffffffffb70a8918 R12: 1ffff920000c6de2
[   21.637859][  T320] R13: 00000000000005dc R14: ffffc90000637010 R15: ffff888004efaf08
[   21.638314][  T320] FS:  00007fa4c4dd9800(0000) GS:ffff888077137000(0000) knlGS:0000000000000000
[   21.638873][  T320] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.639267][  T320] CR2: 00000000004e5ab0 CR3: 00000000096e8005 CR4: 0000000000772ef0
[   21.639743][  T320] PKRU: 55555554
[   21.639971][  T320] Call Trace:
[   21.640200][  T320]  <TASK>
[ 21.640359][ T320] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.640681][ T320] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.640993][ T320] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 21.641299][ T320] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 21.641690][ T320] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 21.641998][ T320] netif_set_mtu (net/core/dev.c:9652) 
[ 21.642300][ T320] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.642643][ T320] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 21.643099][ T320] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.643332][ T320] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 21.643787][ T320] br_add_if (net/bridge/br_if.c:697) bridge 
[ 21.644162][ T320] do_set_master (net/core/rtnetlink.c:2948) 
[ 21.644475][ T320] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 21.644814][ T320] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 21.645219][ T320] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 21.645526][ T320] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 21.645861][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 21.646172][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.646481][ T320] ? __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) 
[ 21.646832][ T320] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 21.647231][ T320] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.647552][ T320] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.647875][ T320] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 21.648186][ T320] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 21.648502][ T320] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.648818][ T320] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.649141][ T320] ? __create_object (mm/kmemleak.c:771) 
[ 21.649461][ T320] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 21.649779][ T320] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 21.650092][ T320] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.650472][ T320] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 21.650806][ T320] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.651130][ T320] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.651440][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.651770][ T320] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.652075][ T320] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.652374][ T320] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.652689][ T320] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.652994][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.653299][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.653617][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.653927][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.654235][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.654558][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.654889][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.655191][ T320] ? 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) 
[ 21.655497][ T320] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 21.655813][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.656116][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.656423][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.656739][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.657052][ T320] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.657364][ T320] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.657680][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.657982][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.658368][ T320] ___sys_sendmsg (net/socket.c:2670) 
[ 21.658688][ T320] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 21.658994][ T320] ? __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) 
[ 21.659393][ T320] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.659710][ T320] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.660017][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.660325][ T320] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.660637][ T320] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 21.660942][ T320] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.661252][ T320] __sys_sendmsg (net/socket.c:2700) 
[ 21.661571][ T320] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 21.661951][ T320] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.662285][ T320] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.662616][ T320] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.662930][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.663306][  T320] RIP: 0033:0x7fa4c4fa61e7
[ 21.663633][ T320] 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)
[   21.664745][  T320] RSP: 002b:00007ffc979f6378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.665222][  T320] RAX: ffffffffffffffda RBX: 00007ffc979f6aa0 RCX: 00007fa4c4fa61e7
[   21.665691][  T320] RDX: 0000000000000000 RSI: 00007ffc979f63e0 RDI: 0000000000000005
[   21.666167][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.666663][  T320] R10: 000000002c760910 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if