======================================
| [   15.672555][  T276] veth1: entered promiscuous mode
| [   15.674797][  T276] ------------[ cut here ]------------
| [ 15.675119][ T276] WARNING: CPU: 0 PID: 276 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) 
| [   15.675739][  T276] Modules linked in: bridge stp llc veth
[   15.677200][  T276] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.677602][ T276] 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) 
[ 15.677924][ T276] 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
[   15.679035][  T276] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   15.679466][  T276] RAX: 0000000000000000 RBX: ffff88800b9ba000 RCX: 0000000000000001
[   15.679933][  T276] RDX: 0000000000000000 RSI: ffffffff9c49b941 RDI: ffffffff9bc555e0
[   15.680412][  T276] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   15.680890][  T276] R10: ffffc90000607010 R11: ffffffff9d2a8918 R12: 1ffff920000c0de2
[   15.681359][  T276] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff88800b9baf08
[   15.681831][  T276] FS:  00007fd6816f1800(0000) GS:ffff888097cb7000(0000) knlGS:0000000000000000
[   15.682385][  T276] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.682964][  T276] CR2: 00000000004e5aa8 CR3: 0000000004efc002 CR4: 0000000000772ef0
[   15.683445][  T276] PKRU: 55555554
[   15.683680][  T276] Call Trace:
[   15.683914][  T276]  <TASK>
[ 15.684082][ T276] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 15.684408][ T276] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.684727][ T276] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 15.685033][ T276] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.685426][ T276] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.685739][ T276] netif_set_mtu (net/core/dev.c:9652) 
[ 15.686049][ T276] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 15.686388][ T276] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 15.686830][ T276] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 15.687072][ T276] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 15.687502][ T276] br_add_if (net/bridge/br_if.c:697) bridge 
[ 15.687858][ T276] do_set_master (net/core/rtnetlink.c:2948) 
[ 15.688169][ T276] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 15.688493][ T276] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 15.688886][ T276] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 15.689195][ T276] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 15.689514][ T276] ? __kernel_text_address (kernel/extable.c:79) 
[ 15.689823][ T276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.690135][ T276] ? __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) 
[ 15.690450][ T276] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 15.690833][ T276] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.691145][ T276] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.691464][ T276] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 15.691777][ T276] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 15.692087][ T276] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.692406][ T276] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 15.692722][ T276] ? __create_object (mm/kmemleak.c:771) 
[ 15.693034][ T276] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 15.693340][ T276] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 15.693655][ T276] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.694046][ T276] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 15.694363][ T276] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 15.694690][ T276] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.695003][ T276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.695316][ T276] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.695631][ T276] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 15.695934][ T276] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.696304][ T276] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.696682][ T276] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 15.696995][ T276] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.697305][ T276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.697630][ T276] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 15.697942][ T276] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.698251][ T276] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 15.698581][ T276] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 15.698897][ T276] ? 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) 
[ 15.699203][ T276] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 15.699519][ T276] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 15.699829][ T276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.700142][ T276] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 15.700458][ T276] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 15.700775][ T276] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 15.701094][ T276] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 15.701427][ T276] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 15.701736][ T276] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 15.702138][ T276] ___sys_sendmsg (net/socket.c:2670) 
[ 15.702452][ T276] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.702760][ T276] ? __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) 
[ 15.703148][ T276] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 15.703470][ T276] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.703786][ T276] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.704100][ T276] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.704425][ T276] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 15.704737][ T276] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.705052][ T276] __sys_sendmsg (net/socket.c:2700) 
[ 15.705361][ T276] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 15.705760][ T276] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 15.706078][ T276] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.706444][ T276] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.706756][ T276] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.707141][  T276] RIP: 0033:0x7fd6818be1e7
[ 15.707479][ T276] 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)
[   15.708624][  T276] RSP: 002b:00007ffd481d8ac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   15.709097][  T276] RAX: ffffffffffffffda RBX: 00007ffd481d91f0 RCX: 00007fd6818be1e7
[   15.709836][  T276] RDX: 0000000000000000 RSI: 00007ffd481d8b30 RDI: 0000000000000005
[   15.710549][  T276] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   15.711237][  T276] R10: 000000000ac2c910 R11: 0000000000000246 R12: 0000000000000004
[   15.711709][  T276] R13: 00000000686e4c97 R14: 0000000000499600 R15: 0000000000000000
| [   15.832584][  T278] ------------[ cut here ]------------
| [ 15.832952][ T278] WARNING: CPU: 3 PID: 278 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) 
| [   15.833646][  T278] Modules linked in: bridge stp llc veth
| [   15.834723][  T278] Tainted: [W]=WARN
[   15.834998][  T278] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.835447][ T278] 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) 
[ 15.835817][ T278] 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
[   15.837069][  T278] RSP: 0018:ffffc90000ad6ef0 EFLAGS: 00010246
[   15.837530][  T278] RAX: 0000000000000000 RBX: ffff88800b9ba000 RCX: 0000000000000001
[   15.838049][  T278] RDX: 0000000000000000 RSI: ffffffff9c49b941 RDI: ffffffff9bc555e0
[   15.838584][  T278] RBP: ffffc90000ad6fe0 R08: 0000000000000000 R09: 0000000000000000
[   15.839103][  T278] R10: ffffc90000ad7010 R11: ffffffff9d2a8918 R12: 1ffff9200015ade2
[   15.839636][  T278] R13: 00000000000005dc R14: ffffc90000ad7010 R15: ffff88800b9baf08
[   15.840162][  T278] FS:  00007f4c3f589800(0000) GS:ffff888097e37000(0000) knlGS:0000000000000000
[   15.840770][  T278] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.841211][  T278] CR2: 00000000004e5ab8 CR3: 000000000ec6d004 CR4: 0000000000772ef0
[   15.841745][  T278] PKRU: 55555554
[   15.842008][  T278] Call Trace:
[   15.842266][  T278]  <TASK>
[ 15.842455][ T278] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 15.842805][ T278] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.843155][ T278] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 15.843510][ T278] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.843942][ T278] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.844291][ T278] netif_set_mtu (net/core/dev.c:9652) 
[ 15.844655][ T278] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 15.845015][ T278] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 15.845515][ T278] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 15.845781][ T278] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 15.846255][ T278] br_add_if (net/bridge/br_if.c:697) bridge 
[ 15.846676][ T278] do_set_master (net/core/rtnetlink.c:2948) 
[ 15.847040][ T278] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 15.847401][ T278] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 15.847855][ T278] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 15.848202][ T278] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 15.848561][ T278] ? __kernel_text_address (kernel/extable.c:79) 
[ 15.848911][ T278] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.849260][ T278] ? __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) 
[ 15.849649][ T278] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 15.850082][ T278] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.850447][ T278] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.850797][ T278] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 15.851145][ T278] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 15.851503][ T278] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.851854][ T278] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 15.852198][ T278] ? __create_object (mm/kmemleak.c:771) 
[ 15.852565][ T278] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 15.852915][ T278] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 15.853261][ T278] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.853706][ T278] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 15.854059][ T278] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 15.854419][ T278] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.854767][ T278] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.855130][ T278] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.855493][ T278] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 15.855844][ T278] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.856195][ T278] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.856573][ T278] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 15.856928][ T278] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.857283][ T278] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.857647][ T278] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 15.858009][ T278] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.858357][ T278] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 15.858730][ T278] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 15.859075][ T278] ? 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) 
[ 15.859431][ T278] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 15.859782][ T278] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 15.860127][ T278] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.860498][ T278] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 15.860849][ T278] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 15.861196][ T278] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 15.861558][ T278] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 15.861909][ T278] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 15.862256][ T278] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 15.862707][ T278] ___sys_sendmsg (net/socket.c:2670) 
[ 15.863055][ T278] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.863412][ T278] ? __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) 
[ 15.863847][ T278] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 15.864198][ T278] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.864558][ T278] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.864919][ T278] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.865266][ T278] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 15.865628][ T278] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.865985][ T278] __sys_sendmsg (net/socket.c:2700) 
[ 15.866331][ T278] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 15.866785][ T278] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 15.867147][ T278] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.867505][ T278] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.868101][ T278] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.868560][  T278] RIP: 0033:0x7f4c3f7561e7
[ 15.868921][ T278] 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)
[   15.870391][  T278] RSP: 002b:00007ffeee921f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   15.870917][  T278] RAX: ffffffffffffffda RBX: 00007ffeee922650 RCX: 00007f4c3f7561e7
[   15.871679][  T278] RDX: 0000000000000000 RSI: 00007ffeee921f90 RDI: 0000000000000005
[   15.872205][  T278] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   15.872964][  T278] R10: 000000003774f910 R11: 0000000000000246 R12: 0000000000000004


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