======================================
| [   21.318513][  T323] veth1: entered promiscuous mode
| [   21.320203][  T323] ------------[ cut here ]------------
| [ 21.320601][ T323] WARNING: CPU: 2 PID: 323 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) 
| [   21.321570][  T323] Modules linked in: bridge stp llc 8021q vrf veth
[   21.322863][  T323] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.323633][ T323] 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) 
[ 21.324273][ T323] 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
[   21.326393][  T323] RSP: 0018:ffffc90000696ef0 EFLAGS: 00010246
[   21.327154][  T323] RAX: 0000000000000000 RBX: ffff88800a12a000 RCX: 0000000000000001
[   21.328068][  T323] RDX: 0000000000000000 RSI: ffffffffaf69b939 RDI: ffffffffaee555e0
[   21.328904][  T323] RBP: ffffc90000696fe0 R08: 0000000000000000 R09: 0000000000000000
[   21.329774][  T323] R10: ffffc90000697010 R11: ffffffffb04a8918 R12: 1ffff920000d2de2
[   21.330517][  T323] R13: 00000000000005dc R14: ffffc90000697010 R15: ffff88800a12af08
[   21.331054][  T323] FS:  00007f20e8774800(0000) GS:ffff888084bb7000(0000) knlGS:0000000000000000
[   21.331707][  T323] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.332138][  T323] CR2: 00000000004e5aa8 CR3: 000000000a1ab001 CR4: 0000000000772ef0
[   21.332671][  T323] PKRU: 55555554
[   21.332947][  T323] Call Trace:
[   21.333227][  T323]  <TASK>
[ 21.333428][ T323] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.333784][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.334147][ T323] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 21.334516][ T323] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 21.334949][ T323] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 21.335310][ T323] netif_set_mtu (net/core/dev.c:9652) 
[ 21.335683][ T323] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.336033][ T323] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 21.336635][ T323] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.337098][ T323] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 21.337705][ T323] br_add_if (net/bridge/br_if.c:697) bridge 
[ 21.338105][ T323] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 21.338489][ T323] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 21.338837][ T323] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 21.339277][ T323] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 21.339780][ T323] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 21.340392][ T323] ? __kernel_text_address (kernel/extable.c:79) 
[ 21.341031][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.341658][ T323] ? __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) 
[ 21.342171][ T323] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 21.342889][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.343490][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.343830][ T323] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 21.344167][ T323] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 21.344595][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.344947][ T323] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.345300][ T323] ? __create_object (mm/kmemleak.c:771) 
[ 21.345669][ T323] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 21.346017][ T323] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 21.346384][ T323] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 21.347290][ T323] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 21.347656][ T323] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.348254][ T323] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.348737][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.349285][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.349645][ T323] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.349988][ T323] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.350343][ T323] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.350928][ T323] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.351286][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.351645][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.352455][ T323] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.352812][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.353392][ T323] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.353746][ T323] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.354084][ T323] ? 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) 
[ 21.354461][ T323] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 21.354810][ T323] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.355150][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.355504][ T323] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.356080][ T323] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.356431][ T323] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.356786][ T323] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.357137][ T323] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.357719][ T323] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.358157][ T323] ___sys_sendmsg (net/socket.c:2670) 
[ 21.358509][ T323] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 21.358861][ T323] ? __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) 
[ 21.359303][ T323] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.360106][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.360466][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.360828][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.361188][ T323] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 21.361549][ T323] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.361901][ T323] __sys_sendmsg (net/socket.c:2700) 
[ 21.362259][ T323] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 21.362680][ T323] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.363035][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.363621][ T323] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.364187][ T323] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.364611][  T323] RIP: 0033:0x7f20e89411e7
[ 21.364974][ T323] 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)
[   21.366371][  T323] RSP: 002b:00007fff7987ef98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.366871][  T323] RAX: ffffffffffffffda RBX: 00007fff7987f6c0 RCX: 00007f20e89411e7
[   21.367609][  T323] RDX: 0000000000000000 RSI: 00007fff7987f000 RDI: 0000000000000005
[   21.368100][  T323] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   21.368827][  T323] R10: 000000002f3d7910 R11: 0000000000000246 R12: 0000000000000004
[   21.369337][  T323] R13: 00000000686e6871 R14: 0000000000499600 R15: 0000000000000000
| [   55.628960][  T505] ------------[ cut here ]------------
| [ 55.629498][ T505] WARNING: CPU: 3 PID: 505 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) 
| [   55.630118][  T505] Modules linked in: bridge stp llc 8021q vrf veth
| [   55.631591][  T505] Tainted: [W]=WARN
[   55.631831][  T505] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 55.632387][ T505] 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) 
[ 55.632718][ T505] 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
[   55.633979][  T505] RSP: 0018:ffffc90000f16f70 EFLAGS: 00010246
[   55.634526][  T505] RAX: 0000000000000000 RBX: ffff88800a12a000 RCX: 0000000000000001
[   55.634998][  T505] RDX: 0000000000000000 RSI: ffffffffaf69b939 RDI: ffffffffaee555e0
[   55.635611][  T505] RBP: ffffc90000f17058 R08: 0000000000000000 R09: 0000000000000000
[   55.636069][  T505] R10: ffffc90000f17088 R11: ffffffffaba00130 R12: 1ffff920001e2df2
[   55.636630][  T505] R13: 00000000000005dc R14: ffffc90000f17088 R15: ffff88800a12af08
[   55.637099][  T505] FS:  00007fd2cab40800(0000) GS:ffff888084c37000(0000) knlGS:0000000000000000
[   55.637649][  T505] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   55.638047][  T505] CR2: 00000000004e5aa8 CR3: 0000000005344005 CR4: 0000000000772ef0
[   55.638526][  T505] PKRU: 55555554
[   55.638767][  T505] Call Trace:
[   55.639004][  T505]  <TASK>
[ 55.639173][ T505] ? __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) 
[ 55.639587][ T505] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 55.639955][ T505] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 55.640274][ T505] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 55.640580][ T505] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 55.640885][ T505] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 55.641222][ T505] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 55.641534][ T505] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 55.641847][ T505] ? ___sys_sendmsg (net/socket.c:2670) 
[ 55.642152][ T505] ? __sys_sendmsg (net/socket.c:2700) 
[ 55.642470][ T505] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 55.642789][ T505] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 55.643180][ T505] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.643513][ T505] netif_set_mtu (net/core/dev.c:9652) 
[ 55.643823][ T505] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 55.644150][ T505] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 55.644396][ T505] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 55.644821][ T505] br_del_if (net/bridge/br_if.c:743) bridge 
[ 55.645159][ T505] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 55.645475][ T505] do_set_master (net/core/rtnetlink.c:2932) 
[ 55.645782][ T505] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 55.646092][ T505] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 55.646501][ T505] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 55.646813][ T505] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 55.647115][ T505] ? __kernel_text_address (kernel/extable.c:79) 
[ 55.647449][ T505] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.647758][ T505] ? __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) 
[ 55.648070][ T505] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 55.648456][ T505] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.648825][ T505] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.649150][ T505] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 55.649479][ T505] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 55.649800][ T505] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.650125][ T505] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 55.650457][ T505] ? __create_object (mm/kmemleak.c:771) 
[ 55.650790][ T505] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 55.651135][ T505] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 55.651480][ T505] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 55.651883][ T505] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 55.652208][ T505] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 55.652541][ T505] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 55.652861][ T505] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.653188][ T505] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.653521][ T505] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 55.653845][ T505] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 55.654168][ T505] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 55.654502][ T505] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 55.654835][ T505] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 55.655161][ T505] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.655497][ T505] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 55.655814][ T505] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 55.656132][ T505] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 55.656475][ T505] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 55.656797][ T505] ? 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) 
[ 55.657121][ T505] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 55.657461][ T505] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 55.657782][ T505] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.658112][ T505] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 55.658448][ T505] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 55.658785][ T505] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 55.659112][ T505] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 55.659445][ T505] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 55.659765][ T505] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 55.660171][ T505] ___sys_sendmsg (net/socket.c:2670) 
[ 55.660501][ T505] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 55.660824][ T505] ? __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) 
[ 55.661271][ T505] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 55.661599][ T505] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.661923][ T505] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 55.662258][ T505] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 55.662580][ T505] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 55.662902][ T505] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 55.663236][ T505] __sys_sendmsg (net/socket.c:2700) 
[ 55.663560][ T505] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 55.663964][ T505] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 55.664307][ T505] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 55.664630][ T505] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 55.664952][ T505] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   55.665360][  T505] RIP: 0033:0x7fd2cad0d1e7
[ 55.665695][ T505] 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)
[   55.667132][  T505] RSP: 002b:00007ffc4ef0bff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   55.667877][  T505] RAX: ffffffffffffffda RBX: 00007ffc4ef0c720 RCX: 00007fd2cad0d1e7
[   55.668372][  T505] RDX: 0000000000000000 RSI: 00007ffc4ef0c060 RDI: 0000000000000005
[   55.668866][  T505] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   55.669597][  T505] R10: 00007fd2cac0aee8 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