======================================
| [   19.390053][  T306] veth1: entered promiscuous mode
| [   19.392648][  T306] ------------[ cut here ]------------
| [ 19.393018][ T306] WARNING: CPU: 2 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) 
| [   19.394638][  T306] Modules linked in: bridge stp llc sch_ingress vrf veth
[   19.395751][  T306] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.396150][ 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) 
[ 19.396486][ 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
[   19.397612][  T306] RSP: 0018:ffffc90000a76ef0 EFLAGS: 00010246
[   19.398021][  T306] RAX: 0000000000000000 RBX: ffff888004c4a000 RCX: 0000000000000001
[   19.398501][  T306] RDX: 0000000000000000 RSI: ffffffffa329b941 RDI: ffffffffa2a555e0
[   19.398998][  T306] RBP: ffffc90000a76fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.399506][  T306] R10: ffffc90000a77010 R11: ffffffffa40a8918 R12: 1ffff9200014ede2
[   19.400234][  T306] R13: 00000000000005dc R14: ffffc90000a77010 R15: ffff888004c4af08
[   19.400756][  T306] FS:  00007f833a3cb800(0000) GS:ffff88808a1b7000(0000) knlGS:0000000000000000
[   19.401316][  T306] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.401765][  T306] CR2: 00000000004e5aa8 CR3: 000000000c748004 CR4: 0000000000772ef0
[   19.402244][  T306] PKRU: 55555554
[   19.402491][  T306] Call Trace:
[   19.402751][  T306]  <TASK>
[ 19.402944][ T306] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.403277][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.403626][ T306] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.403960][ T306] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.404366][ T306] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.404718][ T306] netif_set_mtu (net/core/dev.c:9652) 
[ 19.405057][ T306] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.405390][ T306] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.405845][ T306] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.406092][ T306] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.406534][ T306] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.406917][ T306] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.407245][ T306] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.407572][ T306] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.407987][ T306] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.408313][ T306] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.408647][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.408982][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.409307][ 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) 
[ 19.409635][ T306] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.410027][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.410349][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.410676][ T306] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.410995][ T306] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.411324][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.411658][ T306] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.412009][ T306] ? __create_object (mm/kmemleak.c:771) 
[ 19.412336][ T306] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.412673][ T306] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.413031][ T306] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.413450][ T306] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.413805][ T306] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.414151][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.414485][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.414845][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.415177][ T306] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.415502][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.415836][ T306] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.416174][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.416504][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.416857][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.417194][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.417538][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.417889][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.418237][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.418564][ 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) 
[ 19.418907][ T306] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.419251][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.419605][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.419944][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.420287][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.420653][ T306] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.420998][ T306] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.421348][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.421691][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.422110][ T306] ___sys_sendmsg (net/socket.c:2670) 
[ 19.422437][ T306] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.422792][ 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) 
[ 19.423200][ T306] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.423531][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.423884][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.424228][ T306] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.424560][ 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) 
[ 19.424909][ T306] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.425257][ T306] __sys_sendmsg (net/socket.c:2700) 
[ 19.425598][ T306] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.425997][ T306] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.426333][ T306] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.426684][ T306] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.427016][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.427418][  T306] RIP: 0033:0x7f833a5981e7
[ 19.427776][ 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)
[   19.428928][  T306] RSP: 002b:00007ffd6fa32e78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.429433][  T306] RAX: ffffffffffffffda RBX: 00007ffd6fa335a0 RCX: 00007f833a5981e7
[   19.429924][  T306] RDX: 0000000000000000 RSI: 00007ffd6fa32ee0 RDI: 0000000000000005
[   19.430603][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.431102][  T306] R10: 0000000019544910 R11: 0000000000000246 R12: 0000000000000004
[   19.431602][  T306] R13: 00000000686e1f47 R14: 0000000000499600 R15: 0000000000000000
| [   19.705729][  T309] ------------[ cut here ]------------
| [ 19.706045][ T309] WARNING: CPU: 1 PID: 309 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) 
| [   19.706684][  T309] Modules linked in: bridge stp llc sch_ingress vrf veth
| [   19.707734][  T309] Tainted: [W]=WARN
[   19.707977][  T309] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.708356][ T309] 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) 
[ 19.708873][ T309] 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
[   19.710186][  T309] RSP: 0018:ffffc90000a86ef0 EFLAGS: 00010246
[   19.710575][  T309] RAX: 0000000000000000 RBX: ffff888004c4a000 RCX: 0000000000000001
[   19.711216][  T309] RDX: 0000000000000000 RSI: ffffffffa329b941 RDI: ffffffffa2a555e0
[   19.711946][  T309] RBP: ffffc90000a86fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.712405][  T309] R10: ffffc90000a87010 R11: ffffffffa40a8918 R12: 1ffff92000150de2
[   19.713022][  T309] R13: 00000000000005dc R14: ffffc90000a87010 R15: ffff888004c4af08
[   19.713479][  T309] FS:  00007f91da2be800(0000) GS:ffff88808a137000(0000) knlGS:0000000000000000
[   19.714056][  T309] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.714443][  T309] CR2: 00000000004e5ab0 CR3: 00000000050f7005 CR4: 0000000000772ef0
[   19.714914][  T309] PKRU: 55555554
[   19.715146][  T309] Call Trace:
[   19.715380][  T309]  <TASK>
[ 19.715540][ T309] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.715870][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.716193][ T309] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.716507][ T309] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.716898][ T309] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.717207][ T309] netif_set_mtu (net/core/dev.c:9652) 
[ 19.717514][ T309] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.717846][ T309] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.718301][ T309] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.718539][ T309] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.718975][ T309] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.719329][ T309] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.719664][ T309] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.719979][ T309] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.720367][ T309] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.720685][ T309] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.720996][ T309] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.721309][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.721627][ T309] ? __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) 
[ 19.721943][ T309] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.722321][ T309] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.722642][ T309] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.722962][ T309] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.723270][ T309] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.723575][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.723907][ T309] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.724211][ T309] ? __create_object (mm/kmemleak.c:771) 
[ 19.724520][ T309] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.724834][ T309] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.725140][ T309] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.725518][ T309] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.725847][ T309] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.726160][ T309] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.726464][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.726781][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.727085][ T309] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.727385][ T309] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.727708][ T309] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.728013][ T309] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.728320][ T309] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.728639][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.728977][ T309] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.729289][ T309] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.729642][ T309] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.729958][ T309] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.730262][ T309] ? 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) 
[ 19.730572][ T309] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.730891][ T309] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.731199][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.731512][ T309] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.731845][ T309] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.732159][ T309] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.732480][ T309] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.732817][ T309] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.733123][ T309] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.733515][ T309] ___sys_sendmsg (net/socket.c:2670) 
[ 19.733826][ T309] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.734133][ T309] ? __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) 
[ 19.734516][ T309] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.734837][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.735160][ T309] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.735468][ T309] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.735793][ T309] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.736107][ T309] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.736420][ T309] __sys_sendmsg (net/socket.c:2700) 
[ 19.736732][ T309] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.737107][ T309] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.737427][ T309] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.737747][ T309] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.738059][ T309] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.738454][  T309] RIP: 0033:0x7f91da48b1e7
[ 19.738787][ T309] 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)
[   19.739892][  T309] RSP: 002b:00007ffc925a9558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.740362][  T309] RAX: ffffffffffffffda RBX: 00007ffc925a9c80 RCX: 00007f91da48b1e7
[   19.740828][  T309] RDX: 0000000000000000 RSI: 00007ffc925a95c0 RDI: 0000000000000005
[   19.741286][  T309] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.741756][  T309] R10: 0000000001010910 R11: 0000000000000246 R12: 0000000000000004
[   19.742215][  T309] R13: 00000000686e1f47 R14: 0000000000499600 R15: 0000000000000000
| [   66.271414][  T738] ------------[ cut here ]------------
| [ 66.271790][ T738] WARNING: CPU: 3 PID: 738 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) 
| [   66.272415][  T738] Modules linked in: act_gact act_pedit cls_flower bridge stp llc sch_ingress vrf veth
| [   66.273644][  T738] Tainted: [W]=WARN
[   66.273910][  T738] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 66.274306][ T738] 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) 
[ 66.274661][ T738] 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
[   66.276185][  T738] RSP: 0018:ffffc900013eef70 EFLAGS: 00010246
[   66.276596][  T738] RAX: 0000000000000000 RBX: ffff888004c4a000 RCX: 0000000000000001
[   66.277082][  T738] RDX: 0000000000000000 RSI: ffffffffa329b941 RDI: ffffffffa2a555e0
[   66.277569][  T738] RBP: ffffc900013ef058 R08: 0000000000000000 R09: 0000000000000000
[   66.278069][  T738] R10: ffffc900013ef088 R11: ffffffff9f600130 R12: 1ffff9200027ddf2
[   66.278537][  T738] R13: 00000000000005dc R14: ffffc900013ef088 R15: ffff888004c4af08
[   66.279044][  T738] FS:  00007fa893e9a800(0000) GS:ffff88808a237000(0000) knlGS:0000000000000000
[   66.279614][  T738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.280004][  T738] CR2: 00000000004e5ab0 CR3: 000000000aede003 CR4: 0000000000772ef0
[   66.280495][  T738] PKRU: 55555554
[   66.280746][  T738] Call Trace:
[   66.280978][  T738]  <TASK>
[ 66.281145][ T738] ? __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) 
[ 66.281550][ T738] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 66.281929][ T738] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 66.282262][ T738] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 66.282588][ T738] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 66.282912][ T738] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.283234][ T738] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.283558][ T738] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.283902][ T738] ? ___sys_sendmsg (net/socket.c:2670) 
[ 66.284217][ T738] ? __sys_sendmsg (net/socket.c:2700) 
[ 66.284518][ T738] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.284858][ T738] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 66.285262][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.285589][ T738] netif_set_mtu (net/core/dev.c:9652) 
[ 66.285916][ T738] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 66.286237][ T738] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 66.286494][ T738] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 66.286949][ T738] br_del_if (net/bridge/br_if.c:743) bridge 
[ 66.287294][ T738] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 66.287620][ T738] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 66.287934][ T738] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 66.288263][ T738] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 66.288686][ T738] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 66.289011][ T738] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 66.289322][ T738] ? __kernel_text_address (kernel/extable.c:79) 
[ 66.289649][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.289979][ T738] ? __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) 
[ 66.290304][ T738] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 66.290706][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.291018][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.291350][ T738] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 66.291685][ T738] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 66.291999][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.292330][ T738] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 66.292651][ T738] ? __create_object (mm/kmemleak.c:771) 
[ 66.292979][ T738] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 66.293293][ T738] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 66.293620][ T738] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 66.294018][ T738] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 66.294337][ T738] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 66.294668][ T738] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.294979][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.295303][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.295636][ T738] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 66.295952][ T738] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.296277][ T738] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.296598][ T738] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 66.296914][ T738] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.297231][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.297543][ T738] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 66.297854][ T738] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.298161][ T738] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 66.298478][ T738] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 66.298799][ T738] ? 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) 
[ 66.299103][ T738] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.299414][ T738] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 66.299725][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.300036][ T738] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.300343][ T738] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 66.300658][ T738] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 66.300980][ T738] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.301292][ T738] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 66.301604][ T738] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 66.302004][ T738] ___sys_sendmsg (net/socket.c:2670) 
[ 66.302304][ T738] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 66.302626][ T738] ? __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) 
[ 66.303094][ T738] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 66.303415][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.303737][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.304053][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.304365][ T738] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 66.304699][ T738] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.305032][ T738] __sys_sendmsg (net/socket.c:2700) 
[ 66.305354][ T738] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 66.305779][ T738] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 66.306100][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.306427][ T738] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.306757][ T738] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.307155][  T738] RIP: 0033:0x7fa8940671e7
[ 66.307492][ T738] 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)
[   66.308646][  T738] RSP: 002b:00007ffe4e977a88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.309115][  T738] RAX: ffffffffffffffda RBX: 00007ffe4e9781b0 RCX: 00007fa8940671e7
[   66.309592][  T738] RDX: 0000000000000000 RSI: 00007ffe4e977af0 RDI: 0000000000000005
[   66.310051][  T738] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   66.310513][  T738] R10: 00007fa893f64ee8 R11: 0000000000000246 R12: 0000000000000003
[   66.310977][  T738] R13: 00000000686e1f76 R14: 0000000000499600 R15: 0000000000000000
| [   66.557305][  T740] ------------[ cut here ]------------
| [ 66.557880][ T740] WARNING: CPU: 2 PID: 740 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) 
| [   66.558534][  T740] Modules linked in: act_gact act_pedit cls_flower bridge stp llc sch_ingress vrf veth
| [   66.559826][  T740] Tainted: [W]=WARN
[   66.560075][  T740] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 66.560473][ T740] 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) 
[ 66.560852][ T740] 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
[   66.561991][  T740] RSP: 0018:ffffc9000137ef70 EFLAGS: 00010246
[   66.562398][  T740] RAX: 0000000000000000 RBX: ffff888004c4a000 RCX: 0000000000000001
[   66.562976][  T740] RDX: 0000000000000000 RSI: ffffffffa329b941 RDI: ffffffffa2a555e0
[   66.563476][  T740] RBP: ffffc9000137f058 R08: 0000000000000000 R09: 0000000000000000
[   66.563965][  T740] R10: ffffc9000137f088 R11: ffffffffa3779160 R12: 1ffff9200026fdf2
[   66.564457][  T740] R13: 00000000000005dc R14: ffffc9000137f088 R15: ffff888004c4af08
[   66.564975][  T740] FS:  00007f658cb51800(0000) GS:ffff88808a1b7000(0000) knlGS:0000000000000000
[   66.565529][  T740] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.565966][  T740] CR2: 00000000004e5aa8 CR3: 000000000aede001 CR4: 0000000000772ef0
[   66.566442][  T740] PKRU: 55555554
[   66.566698][  T740] Call Trace:
[   66.566958][  T740]  <TASK>
[ 66.567127][ T740] ? __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) 
[ 66.567548][ T740] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 66.567928][ T740] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 66.568258][ T740] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 66.568578][ T740] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 66.568927][ T740] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.569259][ T740] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.569578][ T740] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.569922][ T740] ? ___sys_sendmsg (net/socket.c:2670) 
[ 66.570250][ T740] ? __sys_sendmsg (net/socket.c:2700) 
[ 66.570598][ T740] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.570926][ T740] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 66.571324][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.571671][ T740] netif_set_mtu (net/core/dev.c:9652) 
[ 66.572009][ T740] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 66.572356][ T740] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 66.572617][ T740] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 66.573090][ T740] br_del_if (net/bridge/br_if.c:743) bridge 
[ 66.573479][ T740] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 66.573815][ T740] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 66.574143][ T740] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 66.574489][ T740] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 66.574899][ T740] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 66.575233][ T740] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 66.575573][ T740] ? __kernel_text_address (kernel/extable.c:79) 
[ 66.575914][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.576236][ T740] ? __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) 
[ 66.576569][ T740] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 66.576984][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.577306][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.577662][ T740] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 66.577994][ T740] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 66.578316][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.578683][ T740] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 66.578997][ T740] ? __create_object (mm/kmemleak.c:771) 
[ 66.579318][ T740] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 66.579646][ T740] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 66.579973][ T740] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 66.580363][ T740] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 66.580701][ T740] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 66.581022][ T740] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.581340][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.581674][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.581991][ T740] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 66.582304][ T740] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.582647][ T740] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.582992][ T740] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 66.583314][ T740] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.583649][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.583974][ T740] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 66.584300][ T740] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.584633][ T740] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 66.584969][ T740] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 66.585282][ T740] ? 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) 
[ 66.585616][ T740] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.585942][ T740] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 66.586301][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.586644][ T740] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.586975][ T740] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 66.587306][ T740] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 66.587652][ T740] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.587977][ T740] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 66.588294][ T740] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 66.588706][ T740] ___sys_sendmsg (net/socket.c:2670) 
[ 66.589038][ T740] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 66.589370][ T740] ? __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) 
[ 66.589795][ T740] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 66.590127][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.590461][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.590795][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.591113][ T740] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 66.591450][ T740] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.591805][ T740] __sys_sendmsg (net/socket.c:2700) 
[ 66.592121][ T740] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 66.592514][ T740] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 66.592870][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.593205][ T740] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.593525][ T740] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.593934][  T740] RIP: 0033:0x7f658cd1e1e7
[ 66.594266][ T740] 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)
[   66.595393][  T740] RSP: 002b:00007ffdf28b0978 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.595884][  T740] RAX: ffffffffffffffda RBX: 00007ffdf28b10a0 RCX: 00007f658cd1e1e7
[   66.596367][  T740] RDX: 0000000000000000 RSI: 00007ffdf28b09e0 RDI: 0000000000000005
[   66.596858][  T740] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   66.597336][  T740] R10: 00007f658cc1bee8 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