======================================
| [   18.891141][  T300] veth1: entered promiscuous mode
| [   18.904323][  T300] ------------[ cut here ]------------
| [ 18.904709][ T300] WARNING: CPU: 2 PID: 300 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) 
| [   18.905416][  T300] Modules linked in: bridge stp llc vrf veth
[   18.906551][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.908256][ T300] 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) 
[ 18.908615][ T300] 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
[   18.909757][  T300] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   18.910175][  T300] RAX: 0000000000000000 RBX: ffff8880057b2000 RCX: 0000000000000001
[   18.910656][  T300] RDX: 0000000000000000 RSI: ffffffff9ac9b939 RDI: ffffffff9a4555e0
[   18.911153][  T300] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.911656][  T300] R10: ffffc900005c7010 R11: ffffffff9baa8918 R12: 1ffff920000b8de2
[   18.912172][  T300] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff8880057b2f08
[   18.912684][  T300] FS:  00007f28a33f4800(0000) GS:ffff8880995b7000(0000) knlGS:0000000000000000
[   18.913293][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.913747][  T300] CR2: 00000000004e5aa8 CR3: 000000000dc2a001 CR4: 0000000000772ef0
[   18.914278][  T300] PKRU: 55555554
[   18.914540][  T300] Call Trace:
[   18.914805][  T300]  <TASK>
[ 18.914997][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.915342][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.915688][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.916030][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.916446][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.917008][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 18.917338][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.917669][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.918133][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.918380][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.918821][ T300] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.919210][ T300] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 18.919543][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.919870][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.920291][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.920618][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.920949][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.921273][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.921611][ T300] ? __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) 
[ 18.921959][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.922381][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.922721][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.923070][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.923409][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.923771][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.924129][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.924454][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 18.924788][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.925137][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.925460][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.925879][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.926235][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.926581][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.926932][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.927278][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.927617][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.927967][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.928313][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.928652][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.928993][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.929339][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.929682][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.930032][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.930368][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.930717][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.931064][ T300] ? 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) 
[ 18.931403][ T300] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 18.931754][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.932101][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.932443][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.932788][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.933142][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.933486][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.933840][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.934196][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.934622][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 18.934964][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.935302][ T300] ? __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) 
[ 18.935716][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.936067][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.936408][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.936758][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.937102][ T300] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.937442][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.937793][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 18.938140][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.938552][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.938914][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.939253][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.939595][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.940283][  T300] RIP: 0033:0x7f28a35c11e7
[ 18.940632][ T300] 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)
[   18.942057][  T300] RSP: 002b:00007ffcd641e408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.942572][  T300] RAX: ffffffffffffffda RBX: 00007ffcd641eb30 RCX: 00007f28a35c11e7
[   18.943081][  T300] RDX: 0000000000000000 RSI: 00007ffcd641e470 RDI: 0000000000000005
[   18.944063][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.944567][  T300] R10: 000000001166d910 R11: 0000000000000246 R12: 0000000000000004
[   18.945073][  T300] R13: 00000000686e66e6 R14: 0000000000499600 R15: 0000000000000000
| [   19.086861][  T302] ------------[ cut here ]------------
| [ 19.087192][ T302] WARNING: CPU: 1 PID: 302 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) 
| [   19.087795][  T302] Modules linked in: bridge stp llc vrf veth
| [   19.088923][  T302] Tainted: [W]=WARN
[   19.089158][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.089543][ T302] 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) 
[ 19.089857][ T302] 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
[   19.090954][  T302] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   19.091339][  T302] RAX: 0000000000000000 RBX: ffff8880057b2000 RCX: 0000000000000001
[   19.091796][  T302] RDX: 0000000000000000 RSI: ffffffff9ac9b939 RDI: ffffffff9a4555e0
[   19.092268][  T302] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.092729][  T302] R10: ffffc90000577010 R11: ffffffff9baa8918 R12: 1ffff920000aede2
[   19.093197][  T302] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff8880057b2f08
[   19.093670][  T302] FS:  00007f4d7a52a800(0000) GS:ffff888099537000(0000) knlGS:0000000000000000
[   19.094218][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.094608][  T302] CR2: 00000000004e5ab0 CR3: 000000000211f001 CR4: 0000000000772ef0
[   19.095088][  T302] PKRU: 55555554
[   19.095320][  T302] Call Trace:
[   19.095551][  T302]  <TASK>
[ 19.095710][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.096037][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.096371][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.096682][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.097080][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.097395][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 19.097703][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.098028][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.098488][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.098725][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.099159][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.099519][ T302] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.099833][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.100153][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.100542][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.100849][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.101164][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.101476][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.101790][ T302] ? __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) 
[ 19.102108][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.102489][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.102800][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.103116][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.103422][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.103766][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.104092][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.104398][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 19.104709][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.105033][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.105342][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.105723][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.106071][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.106391][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.106702][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.107032][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.107343][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.107646][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.107967][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.108287][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.108597][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.108918][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.109234][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.109541][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.109875][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.110208][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.110515][ T302] ? 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) 
[ 19.110824][ T302] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.111150][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.111465][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.111778][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.112102][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.112413][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.112725][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.113045][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.113351][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.113759][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 19.114075][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.114393][ T302] ? __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) 
[ 19.114777][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.115102][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.115416][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.115727][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.116048][ T302] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.116358][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.116673][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 19.116990][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.117371][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.117688][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.118012][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.118323][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.118703][  T302] RIP: 0033:0x7f4d7a6f71e7
[ 19.119037][ T302] 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)
[   19.120141][  T302] RSP: 002b:00007ffebfbc2f18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.120609][  T302] RAX: ffffffffffffffda RBX: 00007ffebfbc3640 RCX: 00007f4d7a6f71e7
[   19.121084][  T302] RDX: 0000000000000000 RSI: 00007ffebfbc2f80 RDI: 0000000000000005
[   19.121544][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.122019][  T302] R10: 000000002bd3e910 R11: 0000000000000246 R12: 0000000000000004


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