======================================
| [   18.764426][  T300] veth1: entered promiscuous mode
| [   18.766780][  T300] ------------[ cut here ]------------
| [ 18.767107][ T300] WARNING: CPU: 3 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) 
| [   18.767750][  T300] Modules linked in: bridge stp llc vrf veth
[   18.768812][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.769212][ 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) 
[ 18.770516][ T300] 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
[   18.771734][  T300] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   18.772173][  T300] RAX: 0000000000000000 RBX: ffff88800ab2a000 RCX: 0000000000000001
[   18.772669][  T300] RDX: 0000000000000000 RSI: ffffffffb889b941 RDI: ffffffffb80555e0
[   18.773151][  T300] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.773642][  T300] R10: ffffc90000577010 R11: ffffffffb96a8918 R12: 1ffff920000aede2
[   18.774131][  T300] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800ab2af08
[   18.774619][  T300] FS:  00007f88202d7800(0000) GS:ffff88807ba37000(0000) knlGS:0000000000000000
[   18.775172][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.775579][  T300] CR2: 00000000004e5aa8 CR3: 000000000bc68004 CR4: 0000000000772ef0
[   18.776058][  T300] PKRU: 55555554
[   18.776297][  T300] Call Trace:
[   18.776545][  T300]  <TASK>
[ 18.776711][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.777037][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.777360][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.777687][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.778082][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.778619][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 18.778939][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.779264][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.779715][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.779956][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.780388][ T300] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.780776][ T300] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.781097][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.781417][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.781827][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.782145][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.782466][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.782787][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.783112][ 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) 
[ 18.783424][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.783828][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.784160][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.784487][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.784802][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.785115][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.785451][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.785766][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 18.786081][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.786396][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.786733][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.787157][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.787492][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.787819][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.788130][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.788464][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.788782][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.789092][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.789409][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.789734][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.790049][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.790371][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.790700][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.791016][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.791333][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.791672][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.791988][ 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) 
[ 18.792311][ T300] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 18.792640][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.792956][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.793274][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.793606][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.793922][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.794264][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.794594][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.794911][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.795314][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 18.795638][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.795949][ 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) 
[ 18.796342][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.796671][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.796989][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.797313][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.797636][ 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) 
[ 18.797951][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.798275][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 18.798597][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.798987][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.799313][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.799644][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.799962][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.800353][  T300] RIP: 0033:0x7f88204a41e7
[ 18.800698][ 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)
[   18.801834][  T300] RSP: 002b:00007ffc13fc7538 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.802314][  T300] RAX: ffffffffffffffda RBX: 00007ffc13fc7c60 RCX: 00007f88204a41e7
[   18.802796][  T300] RDX: 0000000000000000 RSI: 00007ffc13fc75a0 RDI: 0000000000000005
[   18.803273][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.803755][  T300] R10: 000000000fe3c910 R11: 0000000000000246 R12: 0000000000000004
[   18.804251][  T300] R13: 00000000686e4b2b R14: 0000000000499600 R15: 0000000000000000
| [   18.959207][  T301] ------------[ cut here ]------------
| [ 18.959534][ T301] WARNING: CPU: 1 PID: 301 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) 
| [   18.960147][  T301] Modules linked in: bridge stp llc vrf veth
| [   18.961194][  T301] Tainted: [W]=WARN
[   18.961446][  T301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.961831][ T301] 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) 
[ 18.962157][ T301] 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
[   18.963269][  T301] RSP: 0018:ffffc90000536ef0 EFLAGS: 00010246
[   18.963683][  T301] RAX: 0000000000000000 RBX: ffff88800ab2a000 RCX: 0000000000000001
[   18.964154][  T301] RDX: 0000000000000000 RSI: ffffffffb889b941 RDI: ffffffffb80555e0
[   18.964634][  T301] RBP: ffffc90000536fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.965098][  T301] R10: ffffc90000537010 R11: ffffffffb96a8918 R12: 1ffff920000a6de2
[   18.965571][  T301] R13: 00000000000005dc R14: ffffc90000537010 R15: ffff88800ab2af08
[   18.966032][  T301] FS:  00007f631e44a800(0000) GS:ffff88807b937000(0000) knlGS:0000000000000000
[   18.966584][  T301] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.966971][  T301] CR2: 00000000004e5ab0 CR3: 000000000aeb7005 CR4: 0000000000772ef0
[   18.967447][  T301] PKRU: 55555554
[   18.967681][  T301] Call Trace:
[   18.967912][  T301]  <TASK>
[ 18.968072][ T301] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.968385][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.968715][ T301] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.969027][ T301] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.969413][ T301] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.969924][ T301] netif_set_mtu (net/core/dev.c:9652) 
[ 18.970281][ T301] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.970613][ T301] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.971054][ T301] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.971290][ T301] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.971721][ T301] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.972074][ T301] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.972388][ T301] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.972714][ T301] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.973107][ T301] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.973420][ T301] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.973736][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.974056][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.974367][ T301] ? __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) 
[ 18.974685][ T301] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.975067][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.975379][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.975695][ T301] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.976000][ T301] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.976324][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.976658][ T301] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.976971][ T301] ? __create_object (mm/kmemleak.c:771) 
[ 18.977291][ T301] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.977623][ T301] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.977942][ T301] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.978348][ T301] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.978684][ T301] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.979006][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.979326][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.979666][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.979993][ T301] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.980313][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.980654][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.980973][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.981298][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.981632][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.981958][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.982280][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.982623][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.982951][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.983277][ T301] ? 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) 
[ 18.983609][ T301] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 18.983932][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.984263][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.984620][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.984943][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.985263][ T301] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.985607][ T301] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.985932][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.986254][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.986672][ T301] ___sys_sendmsg (net/socket.c:2670) 
[ 18.986990][ T301] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.987312][ T301] ? __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) 
[ 18.987723][ T301] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.988056][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.988382][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.988749][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.989076][ T301] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.989397][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.989738][ T301] __sys_sendmsg (net/socket.c:2700) 
[ 18.990059][ T301] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.990473][ T301] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.990808][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.991136][ T301] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.991468][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.991865][  T301] RIP: 0033:0x7f631e6171e7
[ 18.992202][ T301] 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)
[   18.993367][  T301] RSP: 002b:00007ffc735afe38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.993864][  T301] RAX: ffffffffffffffda RBX: 00007ffc735b0560 RCX: 00007f631e6171e7
[   18.994357][  T301] RDX: 0000000000000000 RSI: 00007ffc735afea0 RDI: 0000000000000005
[   18.994856][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.995340][  T301] R10: 0000000013827910 R11: 0000000000000246 R12: 0000000000000004


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