======================================
| [   17.938052][  T301] veth1: entered promiscuous mode
| [   17.940162][  T301] ------------[ cut here ]------------
| [ 17.940508][ T301] WARNING: CPU: 3 PID: 301 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   17.941259][  T301] Modules linked in: bridge stp llc vrf veth
[   17.942356][  T301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.942774][ T301] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 17.943118][ T301] 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
[   17.944285][  T301] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   17.944710][  T301] RAX: 0000000000000000 RBX: ffff88800bf42000 RCX: 0000000000000001
[   17.945199][  T301] RDX: 0000000000000000 RSI: ffffffff9ac9b939 RDI: ffffffff9a4555e0
[   17.945699][  T301] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   17.946186][  T301] R10: ffffc90000577010 R11: ffffffff9baa8918 R12: 1ffff920000aede2
[   17.946681][  T301] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800bf42f08
[   17.947163][  T301] FS:  00007fbd1cf85800(0000) GS:ffff888099637000(0000) knlGS:0000000000000000
[   17.947738][  T301] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.948151][  T301] CR2: 00000000004e5aa8 CR3: 000000000c3b2001 CR4: 0000000000772ef0
[   17.948649][  T301] PKRU: 55555554
[   17.948902][  T301] Call Trace:
[   17.949146][  T301]  <TASK>
[ 17.949334][ T301] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 17.949673][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.950003][ T301] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 17.950337][ T301] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.950743][ T301] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.951073][ T301] netif_set_mtu (net/core/dev.c:9652) 
[ 17.951412][ T301] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 17.951747][ T301] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 17.952200][ T301] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 17.952470][ T301] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 17.952909][ T301] br_add_if (net/bridge/br_if.c:697) bridge 
[ 17.953276][ T301] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 17.953621][ T301] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 17.953948][ T301] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 17.954366][ T301] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 17.954692][ T301] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 17.955032][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 17.955372][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.955700][ T301] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 17.956031][ T301] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 17.956443][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.956768][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.957090][ T301] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 17.957419][ T301] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 17.957740][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.958062][ T301] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 17.958396][ T301] ? __create_object (mm/kmemleak.c:771) 
[ 17.958723][ T301] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 17.959053][ T301] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 17.959382][ T301] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.959786][ T301] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 17.960117][ T301] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 17.960470][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.960801][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.961128][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.961458][ T301] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 17.961814][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.962167][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.962512][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 17.962840][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.963168][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.963509][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 17.963832][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.964165][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 17.964509][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 17.964834][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 17.965159][ T301] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 17.965495][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 17.965823][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.966159][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 17.966494][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 17.966814][ T301] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 17.967139][ T301] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 17.967474][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 17.967794][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 17.968209][ T301] ___sys_sendmsg (net/socket.c:2670) 
[ 17.968539][ T301] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 17.968864][ T301] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 17.969271][ T301] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 17.970098][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.970441][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.970774][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.971099][ T301] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 17.971431][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.971766][ T301] __sys_sendmsg (net/socket.c:2700) 
[ 17.972087][ T301] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 17.972730][ T301] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 17.973064][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.973616][ T301] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.974404][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.974808][  T301] RIP: 0033:0x7fbd1d1521e7
[ 17.975149][ T301] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   17.976774][  T301] RSP: 002b:00007fff9ce676d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   17.977267][  T301] RAX: ffffffffffffffda RBX: 00007fff9ce67e00 RCX: 00007fbd1d1521e7
[   17.977759][  T301] RDX: 0000000000000000 RSI: 00007fff9ce67740 RDI: 0000000000000005
[   17.978250][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   17.978741][  T301] R10: 0000000039d57910 R11: 0000000000000246 R12: 0000000000000004
[   17.979230][  T301] R13: 00000000686e7483 R14: 0000000000499600 R15: 0000000000000000
| [   18.256265][  T303] ------------[ cut here ]------------
| [ 18.256783][ T303] WARNING: CPU: 2 PID: 303 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   18.257466][  T303] Modules linked in: bridge stp llc vrf veth
| [   18.258578][  T303] Tainted: [W]=WARN
[   18.258841][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.259261][ T303] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 18.259626][ T303] 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
[   18.260783][  T303] RSP: 0018:ffffc90000696ef0 EFLAGS: 00010246
[   18.261204][  T303] RAX: 0000000000000000 RBX: ffff88800bf42000 RCX: 0000000000000001
[   18.261712][  T303] RDX: 0000000000000000 RSI: ffffffff9ac9b939 RDI: ffffffff9a4555e0
[   18.262208][  T303] RBP: ffffc90000696fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.262725][  T303] R10: ffffc90000697010 R11: ffffffff9baa8918 R12: 1ffff920000d2de2
[   18.263220][  T303] R13: 00000000000005dc R14: ffffc90000697010 R15: ffff88800bf42f08
[   18.263725][  T303] FS:  00007f2f37aac800(0000) GS:ffff8880995b7000(0000) knlGS:0000000000000000
[   18.264297][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.264726][  T303] CR2: 00000000004e5ab0 CR3: 000000000c965002 CR4: 0000000000772ef0
[   18.265219][  T303] PKRU: 55555554
[   18.265482][  T303] Call Trace:
[   18.265737][  T303]  <TASK>
[ 18.265915][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.266253][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.266614][ T303] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.266950][ T303] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.267373][ T303] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.267714][ T303] netif_set_mtu (net/core/dev.c:9652) 
[ 18.268047][ T303] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.268401][ T303] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.268871][ T303] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.269127][ T303] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.269601][ T303] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.269991][ T303] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 18.270341][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.270683][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.271098][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.271536][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.271860][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.272184][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.272548][ T303] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 18.272868][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.273260][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.273591][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.273912][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.274231][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.274565][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.274893][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.275209][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 18.275544][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.275867][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.276185][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.276588][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.276914][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.277240][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.277570][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.277894][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.278211][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.278537][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.278857][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.279181][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.279507][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.279828][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.280150][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.280479][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.280795][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.281126][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.281452][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 18.281774][ T303] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 18.282097][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.282432][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.282755][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.283076][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.283400][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.283735][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.284054][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.284379][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.284784][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 18.285101][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.285424][ T303] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 18.285817][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.286142][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.286475][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.286796][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.287113][ T303] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.287441][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.287766][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 18.288081][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.288487][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.288817][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.289140][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.289470][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.289859][  T303] RIP: 0033:0x7f2f37c791e7
[ 18.290185][ T303] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   18.291297][  T303] RSP: 002b:00007fffdc4eaa68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.291813][  T303] RAX: ffffffffffffffda RBX: 00007fffdc4eb190 RCX: 00007f2f37c791e7
[   18.292297][  T303] RDX: 0000000000000000 RSI: 00007fffdc4eaad0 RDI: 0000000000000005
[   18.292776][  T303] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.293243][  T303] R10: 000000000cc51910 R11: 0000000000000246 R12: 0000000000000004
[   18.293724][  T303] R13: 00000000686e7484 R14: 0000000000499600 R15: 0000000000000000
| [   45.903703][  T624] ------------[ cut here ]------------
| [ 45.904080][ T624] WARNING: CPU: 2 PID: 624 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) 
| [   45.904785][  T624] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc vrf veth
| [   45.906090][  T624] Tainted: [W]=WARN
[   45.906363][  T624] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 45.906794][ T624] 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) 
[ 45.907142][ T624] 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
[   45.908490][  T624] RSP: 0018:ffffc90000fc6f70 EFLAGS: 00010246
[   45.909059][  T624] RAX: 0000000000000000 RBX: ffff88800bf42000 RCX: 0000000000000001
[   45.909882][  T624] RDX: 0000000000000000 RSI: ffffffff9ac9b939 RDI: ffffffff9a4555e0
[   45.910591][  T624] RBP: ffffc90000fc7058 R08: 0000000000000000 R09: 0000000000000000
[   45.911166][  T624] R10: ffffc90000fc7088 R11: ffffffff97000130 R12: 1ffff920001f8df2
[   45.911691][  T624] R13: 00000000000005dc R14: ffffc90000fc7088 R15: ffff88800bf42f08
[   45.912185][  T624] FS:  00007f6699974800(0000) GS:ffff8880995b7000(0000) knlGS:0000000000000000
[   45.912803][  T624] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   45.913230][  T624] CR2: 00000000004e5ab0 CR3: 000000000c90e004 CR4: 0000000000772ef0
[   45.913754][  T624] PKRU: 55555554
[   45.914014][  T624] Call Trace:
[   45.914272][  T624]  <TASK>
[ 45.914480][ T624] ? __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) 
[ 45.914906][ T624] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 45.915286][ T624] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 45.915649][ T624] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 45.915992][ T624] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 45.916332][ T624] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 45.916683][ T624] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 45.917011][ T624] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 45.917368][ T624] ? ___sys_sendmsg (net/socket.c:2670) 
[ 45.917716][ T624] ? __sys_sendmsg (net/socket.c:2700) 
[ 45.918047][ T624] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 45.918403][ T624] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 45.918827][ T624] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 45.919173][ T624] netif_set_mtu (net/core/dev.c:9652) 
[ 45.919538][ T624] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 45.919887][ T624] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 45.920140][ T624] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 45.920634][ T624] br_del_if (net/bridge/br_if.c:743) bridge 
[ 45.921001][ T624] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 45.921355][ T624] do_set_master (net/core/rtnetlink.c:2932) 
[ 45.921716][ T624] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 45.922054][ T624] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 45.922503][ T624] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 45.922837][ T624] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 45.923165][ T624] ? __kernel_text_address (kernel/extable.c:79) 
[ 45.923530][ T624] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.923877][ T624] ? __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) 
[ 45.924211][ T624] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 45.924646][ T624] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 45.924983][ T624] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 45.925332][ T624] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 45.925682][ T624] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 45.926022][ T624] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 45.926377][ T624] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 45.926722][ T624] ? __create_object (mm/kmemleak.c:771) 
[ 45.927060][ T624] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 45.927406][ T624] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 45.927751][ T624] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 45.928164][ T624] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 45.928530][ T624] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 45.928876][ T624] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 45.929212][ T624] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.929582][ T624] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 45.929914][ T624] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 45.930243][ T624] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 45.930617][ T624] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 45.930951][ T624] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 45.931283][ T624] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 45.931651][ T624] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.931989][ T624] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 45.932347][ T624] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 45.932695][ T624] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 45.933037][ T624] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 45.933381][ T624] ? 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) 
[ 45.933729][ T624] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 45.934075][ T624] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 45.934423][ T624] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.934794][ T624] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 45.935134][ T624] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 45.935483][ T624] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 45.935829][ T624] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 45.936165][ T624] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 45.936507][ T624] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 45.936934][ T624] ___sys_sendmsg (net/socket.c:2670) 
[ 45.937268][ T624] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 45.937614][ T624] ? __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) 
[ 45.938034][ T624] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 45.938381][ T624] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 45.938726][ T624] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.939064][ T624] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 45.939418][ T624] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 45.939766][ T624] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 45.940107][ T624] __sys_sendmsg (net/socket.c:2700) 
[ 45.940448][ T624] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 45.940858][ T624] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 45.941199][ T624] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 45.941547][ T624] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 45.941888][ T624] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   45.942326][  T624] RIP: 0033:0x7f6699b411e7
[ 45.942677][ T624] 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)
[   45.943835][  T624] RSP: 002b:00007fff85f52d18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   45.944349][  T624] RAX: ffffffffffffffda RBX: 00007fff85f53440 RCX: 00007f6699b411e7
[   45.944841][  T624] RDX: 0000000000000000 RSI: 00007fff85f52d80 RDI: 0000000000000005
[   45.945350][  T624] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   45.945845][  T624] R10: 00007f6699a3eee8 R11: 0000000000000246 R12: 0000000000000003
[   45.946352][  T624] R13: 00000000686e749f R14: 0000000000499600 R15: 0000000000000000
| [   46.191594][  T626] ------------[ cut here ]------------
| [ 46.191975][ T626] WARNING: CPU: 2 PID: 626 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) 
| [   46.192656][  T626] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc vrf veth
| [   46.193914][  T626] Tainted: [W]=WARN
[   46.194170][  T626] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 46.194591][ T626] 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) 
[ 46.194934][ T626] 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
[   46.196085][  T626] RSP: 0018:ffffc90000fd6f70 EFLAGS: 00010246
[   46.196517][  T626] RAX: 0000000000000000 RBX: ffff88800bf42000 RCX: 0000000000000001
[   46.197009][  T626] RDX: 0000000000000000 RSI: ffffffff9ac9b939 RDI: ffffffff9a4555e0
[   46.197506][  T626] RBP: ffffc90000fd7058 R08: 0000000000000000 R09: 0000000000000000
[   46.197994][  T626] R10: ffffc90000fd7088 R11: ffffffff9b179160 R12: 1ffff920001fadf2
[   46.198499][  T626] R13: 00000000000005dc R14: ffffc90000fd7088 R15: ffff88800bf42f08
[   46.198990][  T626] FS:  00007fb505f01800(0000) GS:ffff8880995b7000(0000) knlGS:0000000000000000
[   46.199566][  T626] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   46.199983][  T626] CR2: 00000000004e5aa8 CR3: 000000000c3bd005 CR4: 0000000000772ef0
[   46.200482][  T626] PKRU: 55555554
[   46.200741][  T626] Call Trace:
[   46.200990][  T626]  <TASK>
[ 46.201165][ T626] ? __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) 
[ 46.201583][ T626] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 46.201961][ T626] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 46.202297][ T626] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 46.202643][ T626] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 46.202973][ T626] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 46.203320][ T626] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 46.203649][ T626] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 46.203985][ T626] ? ___sys_sendmsg (net/socket.c:2670) 
[ 46.204326][ T626] ? __sys_sendmsg (net/socket.c:2700) 
[ 46.204659][ T626] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 46.204991][ T626] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 46.205437][ T626] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 46.205783][ T626] netif_set_mtu (net/core/dev.c:9652) 
[ 46.206123][ T626] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 46.206484][ T626] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 46.206742][ T626] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 46.207193][ T626] br_del_if (net/bridge/br_if.c:743) bridge 
[ 46.207569][ T626] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 46.207901][ T626] do_set_master (net/core/rtnetlink.c:2932) 
[ 46.208235][ T626] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 46.208590][ T626] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 46.209009][ T626] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 46.209346][ T626] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 46.209679][ T626] ? __kernel_text_address (kernel/extable.c:79) 
[ 46.210015][ T626] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.210366][ T626] ? __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) 
[ 46.210699][ T626] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 46.211114][ T626] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 46.211456][ T626] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 46.211790][ T626] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 46.212119][ T626] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 46.212470][ T626] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 46.213007][ T626] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 46.213616][ T626] ? __create_object (mm/kmemleak.c:771) 
[ 46.214047][ T626] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 46.214674][ T626] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 46.215219][ T626] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 46.215893][ T626] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 46.216512][ T626] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 46.217114][ T626] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 46.217717][ T626] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.218342][ T626] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 46.218925][ T626] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 46.219519][ T626] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 46.220110][ T626] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 46.220709][ T626] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 46.221317][ T626] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 46.221913][ T626] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.222543][ T626] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 46.223126][ T626] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 46.223737][ T626] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 46.224364][ T626] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 46.224929][ T626] ? 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) 
[ 46.225495][ T626] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 46.225992][ T626] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 46.226550][ T626] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.227141][ T626] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 46.227767][ T626] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 46.228362][ T626] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 46.228916][ T626] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 46.229255][ T626] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 46.229774][ T626] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 46.230449][ T626] ___sys_sendmsg (net/socket.c:2670) 
[ 46.230991][ T626] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 46.231549][ T626] ? __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) 
[ 46.232232][ T626] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 46.232839][ T626] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 46.233429][ T626] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 46.234012][ T626] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.234634][ T626] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 46.235226][ T626] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 46.235837][ T626] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21)) 
[ 46.236445][ T626] __sys_sendmsg (net/socket.c:2700) 
[ 46.237026][ T626] ? __rseq_handle_notify_resume (kernel/rseq.c:442) 
[ 46.237766][ T626] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 46.238395][ T626] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 46.238978][ T626] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 46.239569][ T626] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   46.240271][  T626] RIP: 0033:0x7fb5060ce1e7
[ 46.240907][ T626] 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)
[   46.242881][  T626] RSP: 002b:00007fff5d869878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   46.243385][  T626] RAX: ffffffffffffffda RBX: 00007fff5d869fa0 RCX: 00007fb5060ce1e7
[   46.243897][  T626] RDX: 0000000000000000 RSI: 00007fff5d8698e0 RDI: 0000000000000005
[   46.244400][  T626] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   46.245238][  T626] R10: 00007fb505fcbee8 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