======================================
| [   18.945263][  T304] veth1: entered promiscuous mode
| [   18.947565][  T304] ------------[ cut here ]------------
| [ 18.947921][ T304] WARNING: CPU: 0 PID: 304 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) 
| [   18.949015][  T304] Modules linked in: bridge stp llc vrf veth
[   18.950076][  T304] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.950492][ T304] 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) 
[ 18.950820][ T304] 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
[   18.951926][  T304] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   18.952320][  T304] RAX: 0000000000000000 RBX: ffff888009132000 RCX: 0000000000000001
[   18.952966][  T304] RDX: 0000000000000000 RSI: ffffffff8c69b941 RDI: ffffffff8be555e0
[   18.953437][  T304] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.953900][  T304] R10: ffffc900005c7010 R11: ffffffff8d4a8918 R12: 1ffff920000b8de2
[   18.954358][  T304] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff888009132f08
[   18.954836][  T304] FS:  00007f678f4c6800(0000) GS:ffff8880a0cb7000(0000) knlGS:0000000000000000
[   18.955387][  T304] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.955799][  T304] CR2: 00000000004e5aa8 CR3: 000000000c1da001 CR4: 0000000000772ef0
[   18.956265][  T304] PKRU: 55555554
[   18.956516][  T304] Call Trace:
[   18.956755][  T304]  <TASK>
[ 18.956924][ T304] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.957235][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.957558][ T304] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.957866][ T304] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.958246][ T304] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.958565][ T304] netif_set_mtu (net/core/dev.c:9652) 
[ 18.958887][ T304] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.959209][ T304] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.959647][ T304] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.959883][ T304] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.960318][ T304] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.960683][ T304] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.960995][ T304] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.961304][ T304] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.961702][ T304] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.962020][ T304] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.962332][ T304] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.962676][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.963008][ T304] ? __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) 
[ 18.963335][ T304] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.963747][ T304] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.964061][ T304] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.964392][ T304] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.964700][ T304] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.965005][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.965311][ T304] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.965651][ T304] ? __create_object (mm/kmemleak.c:771) 
[ 18.965975][ T304] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.966293][ T304] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.966617][ T304] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.966998][ T304] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.967308][ T304] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.967628][ T304] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.967936][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.968246][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.968577][ T304] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.968889][ T304] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.969194][ T304] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.969508][ T304] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.969823][ T304] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.970133][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.970495][ T304] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.970803][ T304] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.971111][ T304] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.971446][ T304] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.971752][ T304] ? 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) 
[ 18.972061][ T304] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 18.972381][ T304] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.972687][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.972998][ T304] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.973307][ T304] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.973627][ T304] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.973943][ T304] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.974254][ T304] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.974568][ T304] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.974958][ T304] ___sys_sendmsg (net/socket.c:2670) 
[ 18.975260][ T304] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.975573][ T304] ? __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) 
[ 18.975985][ T304] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.976310][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.976630][ T304] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.976967][ T304] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.977270][ T304] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.977616][ T304] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.977931][ T304] __sys_sendmsg (net/socket.c:2700) 
[ 18.978264][ T304] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.978659][ T304] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.979002][ T304] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.979310][ T304] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.979625][ T304] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.980020][  T304] RIP: 0033:0x7f678f6931e7
[ 18.980358][ T304] 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)
[   18.981519][  T304] RSP: 002b:00007ffc76797a78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.981984][  T304] RAX: ffffffffffffffda RBX: 00007ffc767981a0 RCX: 00007f678f6931e7
[   18.982455][  T304] RDX: 0000000000000000 RSI: 00007ffc76797ae0 RDI: 0000000000000005
[   18.982949][  T304] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.983421][  T304] R10: 000000003e667910 R11: 0000000000000246 R12: 0000000000000004
[   18.983903][  T304] R13: 00000000686e155e R14: 0000000000499600 R15: 0000000000000000
| [   19.230290][  T306] ------------[ cut here ]------------
| [ 19.230659][ T306] WARNING: CPU: 3 PID: 306 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) 
| [   19.231288][  T306] Modules linked in: bridge stp llc vrf veth
| [   19.232533][  T306] Tainted: [W]=WARN
[   19.232790][  T306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.233178][ T306] 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) 
[ 19.233535][ T306] 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
[   19.234660][  T306] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   19.235087][  T306] RAX: 0000000000000000 RBX: ffff888009132000 RCX: 0000000000000001
[   19.235556][  T306] RDX: 0000000000000000 RSI: ffffffff8c69b941 RDI: ffffffff8be555e0
[   19.236012][  T306] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.236507][  T306] R10: ffffc900005c7010 R11: ffffffff8d4a8918 R12: 1ffff920000b8de2
[   19.236976][  T306] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff888009132f08
[   19.237479][  T306] FS:  00007f4fec43f800(0000) GS:ffff8880a0e37000(0000) knlGS:0000000000000000
[   19.238049][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.238464][  T306] CR2: 00000000004e5ab0 CR3: 000000000bdad001 CR4: 0000000000772ef0
[   19.238968][  T306] PKRU: 55555554
[   19.239207][  T306] Call Trace:
[   19.239467][  T306]  <TASK>
[ 19.239625][ T306] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.239952][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.240287][ T306] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.240606][ T306] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.241000][ T306] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.241308][ T306] netif_set_mtu (net/core/dev.c:9652) 
[ 19.241650][ T306] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.241969][ T306] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.242410][ T306] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.242659][ T306] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.243096][ T306] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.243471][ T306] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.243798][ T306] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.244120][ T306] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.244516][ T306] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.244827][ T306] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.245130][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.245463][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.245779][ T306] ? __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) 
[ 19.246094][ T306] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.246484][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.246793][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.247109][ T306] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.247434][ T306] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.247755][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.248060][ T306] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.248396][ T306] ? __create_object (mm/kmemleak.c:771) 
[ 19.248721][ T306] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.249041][ T306] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.249348][ T306] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.249757][ T306] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.250069][ T306] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.250436][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.250753][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.251066][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.251391][ T306] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.251700][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.252012][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.252324][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.252661][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.252976][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.253303][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.253639][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.253952][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.254269][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.254581][ T306] ? 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) 
[ 19.254897][ T306] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.255210][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.255531][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.255861][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.256198][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.256565][ T306] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.256885][ T306] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.257202][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.257519][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.257924][ T306] ___sys_sendmsg (net/socket.c:2670) 
[ 19.258230][ T306] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.258548][ T306] ? __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) 
[ 19.258930][ T306] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.259239][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.259558][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.259871][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.260188][ T306] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.260507][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.260839][ T306] __sys_sendmsg (net/socket.c:2700) 
[ 19.261151][ T306] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.261568][ T306] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.261906][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.262221][ T306] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.262540][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.262933][  T306] RIP: 0033:0x7f4fec60c1e7
[ 19.263250][ T306] 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)
[   19.264358][  T306] RSP: 002b:00007ffd9da204c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.264850][  T306] RAX: ffffffffffffffda RBX: 00007ffd9da20bf0 RCX: 00007f4fec60c1e7
[   19.265313][  T306] RDX: 0000000000000000 RSI: 00007ffd9da20530 RDI: 0000000000000005
[   19.265783][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.266239][  T306] R10: 000000001c045910 R11: 0000000000000246 R12: 0000000000000004
[   19.266706][  T306] R13: 00000000686e155e R14: 0000000000499600 R15: 0000000000000000
| [   54.555171][  T667] ------------[ cut here ]------------
| [ 54.555879][ T667] WARNING: CPU: 3 PID: 667 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) 
| [   54.556549][  T667] Modules linked in: act_skbedit cls_flower sch_prio sch_ingress bridge stp llc vrf veth
| [   54.557795][  T667] Tainted: [W]=WARN
[   54.558051][  T667] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.558467][ T667] 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) 
[ 54.558808][ T667] 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
[   54.559943][  T667] RSP: 0018:ffffc9000106ef70 EFLAGS: 00010246
[   54.560431][  T667] RAX: 0000000000000000 RBX: ffff888009132000 RCX: 0000000000000001
[   54.560924][  T667] RDX: 0000000000000000 RSI: ffffffff8c69b941 RDI: ffffffff8be555e0
[   54.561418][  T667] RBP: ffffc9000106f058 R08: 0000000000000000 R09: 0000000000000000
[   54.561922][  T667] R10: ffffc9000106f088 R11: ffffffff88a00130 R12: 1ffff9200020ddf2
[   54.562477][  T667] R13: 00000000000005dc R14: ffffc9000106f088 R15: ffff888009132f08
[   54.562959][  T667] FS:  00007fd40a4f4800(0000) GS:ffff8880a0e37000(0000) knlGS:0000000000000000
[   54.563676][  T667] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.564081][  T667] CR2: 00000000004e5ab0 CR3: 000000000964a004 CR4: 0000000000772ef0
[   54.564563][  T667] PKRU: 55555554
[   54.564801][  T667] Call Trace:
[   54.565040][  T667]  <TASK>
[ 54.565203][ T667] ? __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) 
[ 54.565631][ T667] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 54.566016][ T667] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 54.566338][ T667] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.566662][ T667] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 54.566978][ T667] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 54.567296][ T667] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.567622][ T667] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.567947][ T667] ? ___sys_sendmsg (net/socket.c:2670) 
[ 54.568266][ T667] ? __sys_sendmsg (net/socket.c:2700) 
[ 54.568590][ T667] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.568931][ T667] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 54.569344][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.569694][ T667] netif_set_mtu (net/core/dev.c:9652) 
[ 54.570011][ T667] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 54.570356][ T667] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 54.570623][ T667] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 54.571062][ T667] br_del_if (net/bridge/br_if.c:743) bridge 
[ 54.571419][ T667] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 54.571748][ T667] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 54.572073][ T667] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.572404][ T667] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 54.572817][ T667] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 54.573151][ T667] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 54.573488][ T667] ? __kernel_text_address (kernel/extable.c:79) 
[ 54.573827][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.574155][ T667] ? __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) 
[ 54.574480][ T667] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 54.574884][ T667] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.575202][ T667] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.575523][ T667] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 54.575847][ T667] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 54.576171][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.576503][ T667] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 54.576821][ T667] ? __create_object (mm/kmemleak.c:771) 
[ 54.577146][ T667] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 54.577476][ T667] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 54.577815][ T667] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 54.578228][ T667] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 54.578569][ T667] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 54.578903][ T667] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.579219][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.579565][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.579883][ T667] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 54.580195][ T667] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.580533][ T667] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.580873][ T667] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 54.581201][ T667] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.581542][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.581879][ T667] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 54.582201][ T667] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.582528][ T667] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 54.582869][ T667] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 54.583187][ T667] ? 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) 
[ 54.583514][ T667] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 54.583837][ T667] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.584161][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.584498][ T667] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.584841][ T667] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.585158][ T667] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.585507][ T667] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.585835][ T667] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.586148][ T667] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.586560][ T667] ___sys_sendmsg (net/socket.c:2670) 
[ 54.586875][ T667] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.587191][ T667] ? __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) 
[ 54.587591][ T667] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.587931][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.588250][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.588580][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.588910][ T667] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 54.589229][ T667] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.589563][ T667] __sys_sendmsg (net/socket.c:2700) 
[ 54.589880][ T667] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.590290][ T667] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.590643][ T667] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.590963][ T667] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.591289][ T667] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.591708][  T667] RIP: 0033:0x7fd40a6c11e7
[ 54.592045][ T667] 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)
[   54.593190][  T667] RSP: 002b:00007ffe2fa70658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.593688][  T667] RAX: ffffffffffffffda RBX: 00007ffe2fa70d80 RCX: 00007fd40a6c11e7
[   54.594163][  T667] RDX: 0000000000000000 RSI: 00007ffe2fa706c0 RDI: 0000000000000005
[   54.594648][  T667] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.595128][  T667] R10: 00007fd40a5beee8 R11: 0000000000000246 R12: 0000000000000003
[   54.595615][  T667] R13: 00000000686e1582 R14: 0000000000499600 R15: 0000000000000000
| [   54.860451][  T669] ------------[ cut here ]------------
| [ 54.860783][ T669] WARNING: CPU: 0 PID: 669 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) 
| [   54.861409][  T669] Modules linked in: act_skbedit cls_flower sch_prio sch_ingress bridge stp llc vrf veth
| [   54.862878][  T669] Tainted: [W]=WARN
[   54.863109][  T669] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.863497][ T669] 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) 
[ 54.863811][ T669] 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
[   54.864917][  T669] RSP: 0018:ffffc9000108ef70 EFLAGS: 00010246
[   54.865303][  T669] RAX: 0000000000000000 RBX: ffff888009132000 RCX: 0000000000000001
[   54.865767][  T669] RDX: 0000000000000000 RSI: ffffffff8c69b941 RDI: ffffffff8be555e0
[   54.866231][  T669] RBP: ffffc9000108f058 R08: 0000000000000000 R09: 0000000000000000
[   54.866693][  T669] R10: ffffc9000108f088 R11: ffffffff8cb79160 R12: 1ffff92000211df2
[   54.867155][  T669] R13: 00000000000005dc R14: ffffc9000108f088 R15: ffff888009132f08
[   54.867618][  T669] FS:  00007f3ea3904800(0000) GS:ffff8880a0cb7000(0000) knlGS:0000000000000000
[   54.868165][  T669] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.868557][  T669] CR2: 00000000004e5aa8 CR3: 0000000004f9b004 CR4: 0000000000772ef0
[   54.869014][  T669] PKRU: 55555554
[   54.869246][  T669] Call Trace:
[   54.869480][  T669]  <TASK>
[ 54.869636][ T669] ? __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) 
[ 54.870015][ T669] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 54.870394][ T669] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 54.870701][ T669] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.871005][ T669] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 54.871306][ T669] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 54.871650][ T669] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.871962][ T669] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.872266][ T669] ? ___sys_sendmsg (net/socket.c:2670) 
[ 54.872583][ T669] ? __sys_sendmsg (net/socket.c:2700) 
[ 54.872888][ T669] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.873195][ T669] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 54.873579][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.873897][ T669] netif_set_mtu (net/core/dev.c:9652) 
[ 54.874203][ T669] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 54.874533][ T669] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 54.874770][ T669] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 54.875199][ T669] br_del_if (net/bridge/br_if.c:743) bridge 
[ 54.875548][ T669] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 54.875856][ T669] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 54.876162][ T669] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.876478][ T669] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 54.876864][ T669] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 54.877167][ T669] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 54.877489][ T669] ? __kernel_text_address (kernel/extable.c:79) 
[ 54.877797][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.878103][ T669] ? __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) 
[ 54.878418][ T669] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 54.878802][ T669] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.879106][ T669] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.879437][ T669] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 54.879745][ T669] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 54.880049][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.880365][ T669] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 54.880684][ T669] ? __create_object (mm/kmemleak.c:771) 
[ 54.880990][ T669] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 54.881296][ T669] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 54.881612][ T669] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 54.881988][ T669] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 54.882305][ T669] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 54.882625][ T669] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.882927][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.883265][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.883584][ T669] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 54.883885][ T669] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.884192][ T669] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.884509][ T669] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 54.884840][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.885159][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.885481][ T669] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 54.885787][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.886088][ T669] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 54.886412][ T669] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 54.886714][ T669] ? 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) 
[ 54.887023][ T669] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 54.887330][ T669] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.887644][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.887954][ T669] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.888260][ T669] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.888571][ T669] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.888884][ T669] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.889201][ T669] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.889512][ T669] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.889901][ T669] ___sys_sendmsg (net/socket.c:2670) 
[ 54.890202][ T669] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.890538][ T669] ? __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) 
[ 54.890940][ T669] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.891261][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.891600][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.891925][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.892250][ T669] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 54.892579][ T669] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.892908][ T669] __sys_sendmsg (net/socket.c:2700) 
[ 54.893228][ T669] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.893637][ T669] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.893972][ T669] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.894295][ T669] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.894625][ T669] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.895019][  T669] RIP: 0033:0x7f3ea3ad11e7
[ 54.895348][ T669] 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)
[   54.896500][  T669] RSP: 002b:00007ffeeac91e18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.896986][  T669] RAX: ffffffffffffffda RBX: 00007ffeeac92540 RCX: 00007f3ea3ad11e7
[   54.897472][  T669] RDX: 0000000000000000 RSI: 00007ffeeac91e80 RDI: 0000000000000005
[   54.897953][  T669] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.898447][  T669] R10: 00007f3ea39ceee8 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