======================================
| [   19.228987][  T305] veth1: entered promiscuous mode
| [   19.232181][  T305] ------------[ cut here ]------------
| [ 19.232780][ T305] WARNING: CPU: 2 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) 
| [   19.234133][  T305] Modules linked in: bridge stp llc sch_ingress vrf veth
[   19.235950][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.236682][ 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) 
[ 19.237311][ T305] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.239505][  T305] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   19.240251][  T305] RAX: 0000000000000000 RBX: ffff8880050ca000 RCX: 0000000000000001
[   19.241110][  T305] RDX: 0000000000000000 RSI: ffffffffa6e9b941 RDI: ffffffffa66555e0
[   19.241979][  T305] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.242845][  T305] R10: ffffc900005d7010 R11: ffffffffa7ca8918 R12: 1ffff920000bade2
[   19.243691][  T305] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff8880050caf08
[   19.244575][  T305] FS:  00007f0f38cc6800(0000) GS:ffff88808d3b7000(0000) knlGS:0000000000000000
[   19.245546][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.246286][  T305] CR2: 00000000004e5aa8 CR3: 000000000cb2c002 CR4: 0000000000772ef0
[   19.247129][  T305] PKRU: 55555554
[   19.247593][  T305] Call Trace:
[   19.248077][  T305]  <TASK>
[ 19.248409][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.249016][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.249642][ T305] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.250268][ T305] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.251019][ T305] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.251646][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 19.252272][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.252870][ T305] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.253690][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.254134][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.254942][ T305] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.255635][ T305] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.256240][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.256831][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.257606][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.258187][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.258808][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.259445][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.260030][ 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) 
[ 19.260620][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.261342][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.261926][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.262519][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.262971][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.263332][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.263779][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.264114][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 19.264487][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.264838][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.265180][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.265620][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.265963][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.266317][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.266706][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.267051][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.267413][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.267815][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.268154][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.268516][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.268889][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.269517][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.269861][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.270207][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.271043][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.271411][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.271849][ 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) 
[ 19.272190][ T305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.272555][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.272890][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.273249][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.273612][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.273964][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.274322][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.274703][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.275044][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.275499][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 19.275844][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.276180][ 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) 
[ 19.276622][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.276965][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.277319][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.277680][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.278263][ 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) 
[ 19.278642][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.279004][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 19.279350][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.279818][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.280402][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.280743][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.281077][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.281970][  T305] RIP: 0033:0x7f0f38e931e7
[ 19.282332][ 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)
[   19.283756][  T305] RSP: 002b:00007fff7e071a08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.284262][  T305] RAX: ffffffffffffffda RBX: 00007fff7e072130 RCX: 00007f0f38e931e7
[   19.284765][  T305] RDX: 0000000000000000 RSI: 00007fff7e071a70 RDI: 0000000000000005
[   19.285507][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.286003][  T305] R10: 000000001a571910 R11: 0000000000000246 R12: 0000000000000004
[   19.286729][  T305] R13: 00000000686e48a3 R14: 0000000000499600 R15: 0000000000000000
| [   19.538879][  T308] ------------[ cut here ]------------
| [ 19.539215][ T308] WARNING: CPU: 0 PID: 308 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) 
| [   19.539869][  T308] Modules linked in: bridge stp llc sch_ingress vrf veth
| [   19.541941][  T308] Tainted: [W]=WARN
[   19.542192][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.542606][ T308] 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) 
[ 19.542936][ T308] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.544092][  T308] RSP: 0018:ffffc90000646ef0 EFLAGS: 00010246
[   19.544502][  T308] RAX: 0000000000000000 RBX: ffff8880050ca000 RCX: 0000000000000001
[   19.544980][  T308] RDX: 0000000000000000 RSI: ffffffffa6e9b941 RDI: ffffffffa66555e0
[   19.545469][  T308] RBP: ffffc90000646fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.545951][  T308] R10: ffffc90000647010 R11: ffffffffa7ca8918 R12: 1ffff920000c8de2
[   19.546450][  T308] R13: 00000000000005dc R14: ffffc90000647010 R15: ffff8880050caf08
[   19.546933][  T308] FS:  00007f2c37fec800(0000) GS:ffff88808d2b7000(0000) knlGS:0000000000000000
[   19.547502][  T308] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.547906][  T308] CR2: 00000000004e5ab0 CR3: 000000000a57f002 CR4: 0000000000772ef0
[   19.548395][  T308] PKRU: 55555554
[   19.548633][  T308] Call Trace:
[   19.548883][  T308]  <TASK>
[ 19.549048][ T308] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.549379][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.549715][ T308] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.550035][ T308] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.550448][ T308] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.550776][ T308] netif_set_mtu (net/core/dev.c:9652) 
[ 19.551096][ T308] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.551451][ T308] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.551904][ T308] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.552152][ T308] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.552604][ T308] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.552977][ T308] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.553309][ T308] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.553636][ T308] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.554041][ T308] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.554374][ T308] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.554699][ T308] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.555025][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.555362][ T308] ? __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) 
[ 19.555683][ T308] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.556082][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.556419][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.556738][ T308] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.557061][ T308] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.557389][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.557709][ T308] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.558025][ T308] ? __create_object (mm/kmemleak.c:771) 
[ 19.558372][ T308] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.558701][ T308] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.559022][ T308] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.559447][ T308] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.559774][ T308] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.560098][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.560433][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.560760][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.561080][ T308] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.561409][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.561729][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.562052][ T308] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.562417][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.562742][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.563068][ T308] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.563399][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.563724][ T308] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.564057][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.564396][ T308] ? 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) 
[ 19.564722][ T308] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.565044][ T308] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.565373][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.565701][ T308] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.566027][ T308] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.566359][ T308] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.566686][ T308] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.567015][ T308] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.567356][ T308] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.567766][ T308] ___sys_sendmsg (net/socket.c:2670) 
[ 19.568085][ T308] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.568416][ T308] ? __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) 
[ 19.568828][ T308] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.569158][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.569490][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.569816][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.570138][ T308] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.570473][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.570802][ T308] __sys_sendmsg (net/socket.c:2700) 
[ 19.571121][ T308] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.571531][ T308] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.571870][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.572191][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.572526][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.572925][  T308] RIP: 0033:0x7f2c381b91e7
[ 19.573263][ T308] 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)
[   19.574418][  T308] RSP: 002b:00007ffce3c062a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.574903][  T308] RAX: ffffffffffffffda RBX: 00007ffce3c069d0 RCX: 00007f2c381b91e7
[   19.575404][  T308] RDX: 0000000000000000 RSI: 00007ffce3c06310 RDI: 0000000000000005
[   19.575894][  T308] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.576391][  T308] R10: 0000000014936910 R11: 0000000000000246 R12: 0000000000000004
[   19.576871][  T308] R13: 00000000686e48a3 R14: 0000000000499600 R15: 0000000000000000
| [   65.175839][  T738] ------------[ cut here ]------------
| [ 65.176160][ T738] WARNING: CPU: 1 PID: 738 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   65.176779][  T738] Modules linked in: act_gact act_pedit cls_flower bridge stp llc sch_ingress vrf veth
| [   65.177966][  T738] Tainted: [W]=WARN
[   65.178195][  T738] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 65.178583][ T738] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 65.178924][ T738] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   65.180020][  T738] RSP: 0018:ffffc90001336f70 EFLAGS: 00010246
[   65.180412][  T738] RAX: 0000000000000000 RBX: ffff8880050ca000 RCX: 0000000000000001
[   65.180872][  T738] RDX: 0000000000000000 RSI: ffffffffa6e9b941 RDI: ffffffffa66555e0
[   65.181343][  T738] RBP: ffffc90001337058 R08: 0000000000000000 R09: 0000000000000000
[   65.181796][  T738] R10: ffffc90001337088 R11: ffffffffa41224d4 R12: 1ffff92000266df2
[   65.183370][  T738] R13: 00000000000005dc R14: ffffc90001337088 R15: ffff8880050caf08
[   65.183836][  T738] FS:  00007f75cef26800(0000) GS:ffff88808d337000(0000) knlGS:0000000000000000
[   65.184372][  T738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.184753][  T738] CR2: 00000000004e5ab0 CR3: 000000000a743005 CR4: 0000000000772ef0
[   65.185205][  T738] PKRU: 55555554
[   65.185451][  T738] Call Trace:
[   65.185690][  T738]  <TASK>
[ 65.185843][ T738] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 65.186250][ T738] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 65.186598][ T738] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 65.186900][ T738] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 65.187200][ T738] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 65.187514][ T738] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 65.187828][ T738] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 65.188129][ T738] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 65.188444][ T738] ? ___sys_sendmsg (net/socket.c:2670) 
[ 65.188752][ T738] ? __sys_sendmsg (net/socket.c:2700) 
[ 65.189054][ T738] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 65.189374][ T738] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 65.189749][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.190059][ T738] netif_set_mtu (net/core/dev.c:9652) 
[ 65.190370][ T738] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 65.190690][ T738] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 65.190924][ T738] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 65.191351][ T738] br_del_if (net/bridge/br_if.c:743) bridge 
[ 65.191690][ T738] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 65.191997][ T738] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 65.192311][ T738] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 65.192618][ T738] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 65.193006][ T738] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 65.193351][ T738] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 65.193653][ T738] ? __kernel_text_address (kernel/extable.c:79) 
[ 65.193961][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.194273][ T738] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 65.194695][ T738] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 65.195077][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.195394][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.195711][ T738] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 65.196013][ T738] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 65.196328][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.196634][ T738] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 65.196938][ T738] ? __create_object (mm/kmemleak.c:771) 
[ 65.197265][ T738] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 65.197573][ T738] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 65.197877][ T738] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 65.198264][ T738] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 65.198576][ T738] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 65.198895][ T738] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 65.199199][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.199519][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.199824][ T738] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 65.200125][ T738] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 65.200445][ T738] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 65.200748][ T738] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 65.201053][ T738] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 65.201378][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.201687][ T738] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 65.201991][ T738] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 65.202304][ T738] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 65.202618][ T738] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 65.202927][ T738] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 65.203246][ T738] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 65.203564][ T738] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 65.203867][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.204177][ T738] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 65.204489][ T738] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 65.204795][ T738] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 65.205110][ T738] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 65.205436][ T738] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 65.205738][ T738] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 65.206126][ T738] ___sys_sendmsg (net/socket.c:2670) 
[ 65.206434][ T738] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 65.206736][ T738] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 65.207113][ T738] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 65.207434][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.207744][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.208052][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.208366][ T738] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 65.208668][ T738] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 65.208988][ T738] __sys_sendmsg (net/socket.c:2700) 
[ 65.209308][ T738] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 65.209692][ T738] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 65.210007][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.210320][ T738] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 65.210625][ T738] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   65.211000][  T738] RIP: 0033:0x7f75cf0f31e7
[ 65.211419][ T738] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   65.212524][  T738] RSP: 002b:00007ffe241e61b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   65.212980][  T738] RAX: ffffffffffffffda RBX: 00007ffe241e68e0 RCX: 00007f75cf0f31e7
[   65.213451][  T738] RDX: 0000000000000000 RSI: 00007ffe241e6220 RDI: 0000000000000005
[   65.213909][  T738] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   65.214370][  T738] R10: 00007f75ceff0ee8 R11: 0000000000000246 R12: 0000000000000003
[   65.214823][  T738] R13: 00000000686e48d1 R14: 0000000000499600 R15: 0000000000000000
| [   65.460600][  T740] ------------[ cut here ]------------
| [ 65.460923][ T740] WARNING: CPU: 1 PID: 740 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   65.461660][  T740] Modules linked in: act_gact act_pedit cls_flower bridge stp llc sch_ingress vrf veth
| [   65.462862][  T740] Tainted: [W]=WARN
[   65.463090][  T740] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 65.463475][ T740] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 65.463790][ T740] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   65.464880][  T740] RSP: 0018:ffffc90001396f70 EFLAGS: 00010246
[   65.465268][  T740] RAX: 0000000000000000 RBX: ffff8880050ca000 RCX: 0000000000000001
[   65.465717][  T740] RDX: 0000000000000000 RSI: ffffffffa6e9b941 RDI: ffffffffa66555e0
[   65.466176][  T740] RBP: ffffc90001397058 R08: 0000000000000000 R09: 0000000000000000
[   65.466645][  T740] R10: ffffc90001397088 R11: ffffffffa7379160 R12: 1ffff92000272df2
[   65.467105][  T740] R13: 00000000000005dc R14: ffffc90001397088 R15: ffff8880050caf08
[   65.467561][  T740] FS:  00007f33f2afc800(0000) GS:ffff88808d337000(0000) knlGS:0000000000000000
[   65.468095][  T740] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.468482][  T740] CR2: 00000000004e5aa8 CR3: 000000000a75c001 CR4: 0000000000772ef0
[   65.468956][  T740] PKRU: 55555554
[   65.469221][  T740] Call Trace:
[   65.469458][  T740]  <TASK>
[ 65.469613][ T740] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 65.469996][ T740] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 65.470369][ T740] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 65.470685][ T740] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 65.470995][ T740] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 65.471307][ T740] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 65.471623][ T740] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 65.471937][ T740] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 65.472250][ T740] ? ___sys_sendmsg (net/socket.c:2670) 
[ 65.472551][ T740] ? __sys_sendmsg (net/socket.c:2700) 
[ 65.472861][ T740] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 65.473164][ T740] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 65.473546][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.473865][ T740] netif_set_mtu (net/core/dev.c:9652) 
[ 65.474181][ T740] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 65.474527][ T740] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 65.474761][ T740] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 65.475210][ T740] br_del_if (net/bridge/br_if.c:743) bridge 
[ 65.475578][ T740] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 65.475899][ T740] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 65.476233][ T740] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 65.476560][ T740] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 65.476967][ T740] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 65.477293][ T740] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 65.477615][ T740] ? __kernel_text_address (kernel/extable.c:79) 
[ 65.477944][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.478301][ T740] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 65.478626][ T740] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 65.479037][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.479370][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.479688][ T740] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 65.480009][ T740] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 65.480343][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.480665][ T740] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 65.480979][ T740] ? __create_object (mm/kmemleak.c:771) 
[ 65.481312][ T740] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 65.481633][ T740] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 65.481952][ T740] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 65.482364][ T740] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 65.482703][ T740] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 65.483026][ T740] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 65.483350][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.483684][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.483993][ T740] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 65.484302][ T740] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 65.484605][ T740] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 65.484912][ T740] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 65.485224][ T740] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 65.485540][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.485855][ T740] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 65.486158][ T740] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 65.486483][ T740] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 65.486800][ T740] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 65.487101][ T740] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 65.487426][ T740] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 65.487734][ T740] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 65.488036][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.488353][ T740] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 65.488660][ T740] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 65.488971][ T740] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 65.489291][ T740] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 65.489597][ T740] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 65.489904][ T740] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 65.490314][ T740] ___sys_sendmsg (net/socket.c:2670) 
[ 65.490616][ T740] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 65.490921][ T740] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 65.491307][ T740] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 65.491613][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.491923][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 65.492245][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 65.492549][ T740] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 65.492849][ T740] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 65.493158][ T740] __sys_sendmsg (net/socket.c:2700) 
[ 65.493465][ T740] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 65.493839][ T740] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 65.494156][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 65.494484][ T740] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 65.494794][ T740] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   65.495169][  T740] RIP: 0033:0x7f33f2cc91e7
[ 65.495490][ T740] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   65.496628][  T740] RSP: 002b:00007ffe2f5679a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   65.497111][  T740] RAX: ffffffffffffffda RBX: 00007ffe2f5680d0 RCX: 00007f33f2cc91e7
[   65.497597][  T740] RDX: 0000000000000000 RSI: 00007ffe2f567a10 RDI: 0000000000000005
[   65.498076][  T740] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   65.498576][  T740] R10: 00007f33f2bc6ee8 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