======================================
| [   19.682090][  T302] veth1: entered promiscuous mode
| [   19.695212][  T302] ------------[ cut here ]------------
| [ 19.695653][ T302] WARNING: CPU: 0 PID: 302 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.696347][  T302] Modules linked in: bridge stp llc vrf veth
[   19.697652][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.698067][ T302] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.698678][ T302] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.700082][  T302] RSP: 0018:ffffc900004e6ef0 EFLAGS: 00010246
[   19.700688][  T302] RAX: 0000000000000000 RBX: ffff88800bcc2000 RCX: 0000000000000001
[   19.701205][  T302] RDX: 0000000000000000 RSI: ffffffffa629b939 RDI: ffffffffa5a555e0
[   19.701850][  T302] RBP: ffffc900004e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.702350][  T302] R10: ffffc900004e7010 R11: ffffffffa70a8918 R12: 1ffff9200009cde2
[   19.702938][  T302] R13: 00000000000005dc R14: ffffc900004e7010 R15: ffff88800bcc2f08
[   19.703421][  T302] FS:  00007ff32d5e3800(0000) GS:ffff8880870b7000(0000) knlGS:0000000000000000
[   19.703964][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.704353][  T302] CR2: 00000000004e5aa8 CR3: 000000000dcd9003 CR4: 0000000000772ef0
[   19.704835][  T302] PKRU: 55555554
[   19.705069][  T302] Call Trace:
[   19.705315][  T302]  <TASK>
[ 19.705496][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.705819][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.706156][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.706759][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.707162][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.707481][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 19.707801][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.708125][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.708564][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.708802][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.709224][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.709591][ T302] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.709915][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.710232][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.710651][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.710975][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.711282][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.711614][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.711926][ T302] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 19.712236][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.712659][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.712976][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.713285][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.713601][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.713911][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.714219][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.714534][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 19.714860][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.715455][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.715779][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.716160][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.716481][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.716790][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.717098][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.717420][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.717958][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.718263][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.718581][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.718888][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.719199][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.719519][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.719835][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.720150][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.720476][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.720797][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.721105][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.721427][ T302] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.721738][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.722044][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.722369][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.722922][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.723232][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.723568][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.723897][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.724438][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.724834][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 19.725144][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.725472][ T302] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 19.726080][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.726402][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.726713][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.727024][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.727565][ T302] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.727878][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.728198][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 19.728521][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.729139][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.729467][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.729776][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.730086][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.730711][  T302] RIP: 0033:0x7ff32d7b01e7
[ 19.731052][ T302] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   19.732198][  T302] RSP: 002b:00007fff4f4af628 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.732682][  T302] RAX: ffffffffffffffda RBX: 00007fff4f4afd50 RCX: 00007ff32d7b01e7
[   19.733384][  T302] RDX: 0000000000000000 RSI: 00007fff4f4af690 RDI: 0000000000000005
[   19.733849][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.734320][  T302] R10: 000000003a28e910 R11: 0000000000000246 R12: 0000000000000004
[   19.735025][  T302] R13: 00000000686e7435 R14: 0000000000499600 R15: 0000000000000000
| [   19.966034][  T305] ------------[ cut here ]------------
| [ 19.966355][ T305] WARNING: CPU: 0 PID: 305 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) 
| [   19.966975][  T305] Modules linked in: bridge stp llc vrf veth
| [   19.968014][  T305] Tainted: [W]=WARN
[   19.968253][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.968643][ T305] 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) 
[ 19.968958][ T305] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.970061][  T305] RSP: 0018:ffffc900007e6ef0 EFLAGS: 00010246
[   19.970644][  T305] RAX: 0000000000000000 RBX: ffff88800bcc2000 RCX: 0000000000000001
[   19.971099][  T305] RDX: 0000000000000000 RSI: ffffffffa629b939 RDI: ffffffffa5a555e0
[   19.971565][  T305] RBP: ffffc900007e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.972031][  T305] R10: ffffc900007e7010 R11: ffffffffa70a8918 R12: 1ffff920000fcde2
[   19.972493][  T305] R13: 00000000000005dc R14: ffffc900007e7010 R15: ffff88800bcc2f08
[   19.972961][  T305] FS:  00007efd2a600800(0000) GS:ffff8880870b7000(0000) knlGS:0000000000000000
[   19.973505][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.973901][  T305] CR2: 00000000004e5ab0 CR3: 000000000dc6d002 CR4: 0000000000772ef0
[   19.974373][  T305] PKRU: 55555554
[   19.974603][  T305] Call Trace:
[   19.974831][  T305]  <TASK>
[ 19.974993][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.975306][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.975626][ T305] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.975931][ T305] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.976326][ T305] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.976645][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 19.976953][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.977273][ T305] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.977723][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.977956][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.978396][ T305] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.978753][ T305] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.979065][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.979385][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.979774][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.980081][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.980393][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.980717][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.981028][ T305] ? __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) 
[ 19.981333][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.981721][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.982028][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.982332][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.982682][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.982998][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.983307][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.983618][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 19.983928][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.984240][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.984557][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.984947][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.985261][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.985590][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.985896][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.986207][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.986527][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.986833][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.987150][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.987465][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.987775][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.988093][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.988409][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.988716][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.989022][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.989336][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.989650][ T305] ? 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) 
[ 19.989959][ T305] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.990280][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.990598][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.990908][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.991216][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.991529][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.991850][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.992159][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.992475][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.992872][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 19.993172][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.993489][ T305] ? __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) 
[ 19.993869][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.994179][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.994498][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.994811][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.995114][ T305] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.995430][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.995743][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 19.996047][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.996439][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.996762][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.997075][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.997389][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.997775][  T305] RIP: 0033:0x7efd2a7cd1e7
[ 19.998092][ T305] 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)
[   19.999187][  T305] RSP: 002b:00007ffdb564f8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.999669][  T305] RAX: ffffffffffffffda RBX: 00007ffdb5650020 RCX: 00007efd2a7cd1e7
[   20.000131][  T305] RDX: 0000000000000000 RSI: 00007ffdb564f960 RDI: 0000000000000005
[   20.000597][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.001056][  T305] R10: 0000000026337910 R11: 0000000000000246 R12: 0000000000000004
[   20.001533][  T305] R13: 00000000686e7435 R14: 0000000000499600 R15: 0000000000000000
| [   53.971153][  T667] ------------[ cut here ]------------
| [ 53.972118][ T667] WARNING: CPU: 1 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) 
| [   53.972767][  T667] Modules linked in: act_skbedit cls_flower sch_prio sch_ingress bridge stp llc vrf veth
| [   53.973968][  T667] Tainted: [W]=WARN
[   53.974201][  T667] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 53.974601][ 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) 
[ 53.974928][ T667] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   53.976028][  T667] RSP: 0018:ffffc90000fdef70 EFLAGS: 00010246
[   53.976427][  T667] RAX: 0000000000000000 RBX: ffff88800bcc2000 RCX: 0000000000000001
[   53.976889][  T667] RDX: 0000000000000000 RSI: ffffffffa629b939 RDI: ffffffffa5a555e0
[   53.977347][  T667] RBP: ffffc90000fdf058 R08: 0000000000000000 R09: 0000000000000000
[   53.977814][  T667] R10: ffffc90000fdf088 R11: ffffffffa2600130 R12: 1ffff920001fbdf2
[   53.978273][  T667] R13: 00000000000005dc R14: ffffc90000fdf088 R15: ffff88800bcc2f08
[   53.978765][  T667] FS:  00007f12cfd4f800(0000) GS:ffff888087137000(0000) knlGS:0000000000000000
[   53.979306][  T667] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.980027][  T667] CR2: 00000000004e5ab0 CR3: 000000000ddb0001 CR4: 0000000000772ef0
[   53.980641][  T667] PKRU: 55555554
[   53.980873][  T667] Call Trace:
[   53.981106][  T667]  <TASK>
[ 53.981264][ 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) 
[ 53.981798][ T667] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 53.982150][ T667] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 53.982662][ T667] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 53.982974][ T667] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 53.983280][ T667] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 53.983784][ T667] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 53.984092][ T667] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 53.984420][ T667] ? ___sys_sendmsg (net/socket.c:2670) 
[ 53.984728][ T667] ? __sys_sendmsg (net/socket.c:2700) 
[ 53.985043][ T667] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 53.985352][ T667] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 53.985754][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.986072][ T667] netif_set_mtu (net/core/dev.c:9652) 
[ 53.986398][ T667] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 53.986730][ T667] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 53.987064][ T667] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 53.987512][ T667] br_del_if (net/bridge/br_if.c:743) bridge 
[ 53.987858][ T667] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 53.988169][ T667] do_set_master (net/core/rtnetlink.c:2932) 
[ 53.988497][ T667] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 53.988816][ T667] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 53.989201][ T667] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 53.989530][ T667] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 53.989835][ T667] ? __kernel_text_address (kernel/extable.c:79) 
[ 53.990143][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.990461][ 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) 
[ 53.990769][ T667] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 53.991151][ T667] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 53.991477][ T667] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 53.991785][ T667] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 53.992092][ T667] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 53.992413][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.992727][ T667] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 53.993031][ T667] ? __create_object (mm/kmemleak.c:771) 
[ 53.993344][ T667] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 53.993663][ T667] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 53.993974][ T667] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 53.994375][ T667] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 53.994692][ T667] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 53.995003][ T667] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 53.995313][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.995645][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 53.995959][ T667] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 53.996264][ T667] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 53.996588][ T667] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 53.996897][ T667] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 53.997204][ T667] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 53.997526][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 53.997841][ T667] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 53.998149][ T667] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 53.998470][ T667] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 53.998796][ T667] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 53.999103][ 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) 
[ 53.999423][ T667] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 53.999740][ T667] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.000050][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.000380][ T667] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.000694][ T667] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.001011][ T667] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.001327][ T667] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.001648][ T667] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.001954][ T667] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.002348][ T667] ___sys_sendmsg (net/socket.c:2670) 
[ 54.002671][ T667] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.002979][ 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) 
[ 54.003388][ T667] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.003707][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.004017][ T667] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.004327][ T667] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.004648][ 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) 
[ 54.004955][ T667] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.005270][ T667] __sys_sendmsg (net/socket.c:2700) 
[ 54.005589][ T667] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.005978][ T667] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.006298][ T667] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.006618][ T667] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.006927][ T667] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.007307][  T667] RIP: 0033:0x7f12cff1c1e7
[ 54.007640][ 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)
[   54.008764][  T667] RSP: 002b:00007ffd421d47e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.009234][  T667] RAX: ffffffffffffffda RBX: 00007ffd421d4f10 RCX: 00007f12cff1c1e7
[   54.009703][  T667] RDX: 0000000000000000 RSI: 00007ffd421d4850 RDI: 0000000000000005
[   54.010173][  T667] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.010641][  T667] R10: 00007f12cfe19ee8 R11: 0000000000000246 R12: 0000000000000003
[   54.011105][  T667] R13: 00000000686e7457 R14: 0000000000499600 R15: 0000000000000000
| [   54.268933][  T669] ------------[ cut here ]------------
| [ 54.269305][ T669] WARNING: CPU: 2 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) 
| [   54.269949][  T669] Modules linked in: act_skbedit cls_flower sch_prio sch_ingress bridge stp llc vrf veth
| [   54.271375][  T669] Tainted: [W]=WARN
[   54.271623][  T669] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.272033][ 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) 
[ 54.272387][ T669] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   54.273514][  T669] RSP: 0018:ffffc90000ffef70 EFLAGS: 00010246
[   54.273921][  T669] RAX: 0000000000000000 RBX: ffff88800bcc2000 RCX: 0000000000000001
[   54.274408][  T669] RDX: 0000000000000000 RSI: ffffffffa629b939 RDI: ffffffffa5a555e0
[   54.274878][  T669] RBP: ffffc90000fff058 R08: 0000000000000000 R09: 0000000000000000
[   54.275352][  T669] R10: ffffc90000fff088 R11: ffffffffa6779160 R12: 1ffff920001ffdf2
[   54.275857][  T669] R13: 00000000000005dc R14: ffffc90000fff088 R15: ffff88800bcc2f08
[   54.276336][  T669] FS:  00007fc9a08da800(0000) GS:ffff8880871b7000(0000) knlGS:0000000000000000
[   54.276894][  T669] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.277291][  T669] CR2: 00000000004e5aa8 CR3: 0000000005986002 CR4: 0000000000772ef0
[   54.277781][  T669] PKRU: 55555554
[   54.278025][  T669] Call Trace:
[   54.278269][  T669]  <TASK>
[ 54.278447][ 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) 
[ 54.278857][ T669] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 54.279221][ T669] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 54.279553][ T669] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.279871][ T669] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 54.280191][ T669] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 54.280521][ T669] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.280840][ T669] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.281167][ T669] ? ___sys_sendmsg (net/socket.c:2670) 
[ 54.281495][ T669] ? __sys_sendmsg (net/socket.c:2700) 
[ 54.281812][ T669] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.282130][ T669] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 54.282531][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.282871][ T669] netif_set_mtu (net/core/dev.c:9652) 
[ 54.283197][ T669] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 54.283550][ T669] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 54.283797][ T669] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 54.284231][ T669] br_del_if (net/bridge/br_if.c:743) bridge 
[ 54.284597][ T669] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 54.284919][ T669] do_set_master (net/core/rtnetlink.c:2932) 
[ 54.285242][ T669] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.285574][ T669] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 54.285989][ T669] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 54.286318][ T669] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 54.286650][ T669] ? __kernel_text_address (kernel/extable.c:79) 
[ 54.286975][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.287297][ 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) 
[ 54.287628][ T669] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 54.288023][ T669] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.288342][ T669] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.288677][ T669] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 54.288994][ T669] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 54.289314][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.289640][ T669] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 54.289958][ T669] ? __create_object (mm/kmemleak.c:771) 
[ 54.290276][ T669] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 54.290607][ T669] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 54.290928][ T669] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 54.291322][ T669] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 54.291654][ T669] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 54.291981][ T669] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.292296][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.292638][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.292960][ T669] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 54.293275][ T669] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.293615][ T669] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.293939][ T669] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 54.294258][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.294590][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.294909][ T669] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 54.295225][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.295552][ T669] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 54.295891][ T669] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 54.296203][ 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) 
[ 54.296534][ T669] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 54.296854][ T669] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.297171][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.297501][ T669] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.297826][ T669] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.298155][ T669] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.298499][ T669] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.298819][ T669] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.299136][ T669] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.299547][ T669] ___sys_sendmsg (net/socket.c:2670) 
[ 54.299865][ T669] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.300182][ 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) 
[ 54.300593][ T669] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.300915][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.301238][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.301570][ T669] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.301891][ 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) 
[ 54.302207][ T669] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.302545][ T669] __sys_sendmsg (net/socket.c:2700) 
[ 54.302874][ T669] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.303276][ T669] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.303619][ T669] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.303946][ T669] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.304268][ T669] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.304668][  T669] RIP: 0033:0x7fc9a0aa71e7
[ 54.305005][ 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)
[   54.306122][  T669] RSP: 002b:00007ffc1c48cda8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.306606][  T669] RAX: ffffffffffffffda RBX: 00007ffc1c48d4d0 RCX: 00007fc9a0aa71e7
[   54.307077][  T669] RDX: 0000000000000000 RSI: 00007ffc1c48ce10 RDI: 0000000000000005
[   54.307561][  T669] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.308030][  T669] R10: 00007fc9a09a4ee8 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