======================================
| [   20.859923][  T317] ip_gre: GRE over IPv4 tunneling driver
| [   20.916173][  T316] ------------[ cut here ]------------
| [ 20.917097][ T316] WARNING: CPU: 0 PID: 316 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) 
| [   20.918034][  T316] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.919350][  T316] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.919760][ T316] 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) 
[ 20.920412][ T316] 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
[   20.922051][  T316] RSP: 0018:ffffc90000687000 EFLAGS: 00010246
[   20.922475][  T316] RAX: 0000000000000000 RBX: ffff88800c73c000 RCX: 0000000000000001
[   20.923728][  T316] RDX: 0000000000000000 RSI: ffffffff8e29b939 RDI: ffffffff8da555e0
[   20.924642][  T316] RBP: ffffc900006870e8 R08: ffff88800c73c218 R09: 0000000000000000
[   20.925430][  T316] R10: ffffc90000687118 R11: ffffffff8e779160 R12: 1ffff920000d0e04
[   20.925942][  T316] R13: 00000000000005b6 R14: ffffc90000687118 R15: ffff88800c73c218
[   20.926429][  T316] FS:  00007f3f13a48800(0000) GS:ffff8880a5eb7000(0000) knlGS:0000000000000000
[   20.927020][  T316] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.927435][  T316] CR2: 00007f73d7863000 CR3: 0000000009a63005 CR4: 0000000000772ef0
[   20.928004][  T316] PKRU: 55555554
[   20.928256][  T316] Call Trace:
[   20.928605][  T316]  <TASK>
[ 20.928772][ T316] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.929182][ T316] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.929496][ T316] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.929937][ T316] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.930265][ T316] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.930604][ T316] netif_set_mtu (net/core/dev.c:9652) 
[ 20.930940][ T316] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.931266][ T316] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.931591][ T316] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.931852][ T316] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.932164][ T316] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.932485][ T316] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.932856][ T316] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.933244][ T316] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.933606][ T316] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.933961][ T316] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.934270][ T316] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.934878][ T316] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.935187][ T316] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.935721][ T316] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.936264][ T316] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.936591][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.936922][ T316] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.937247][ T316] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.937570][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.938235][ T316] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.938683][ T316] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.939110][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.939423][ T316] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.939748][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.940075][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.940876][ T316] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.941289][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.941627][ T316] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.947455][ T316] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.947927][ T316] ? 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) 
[ 20.948245][ T316] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.948679][ T316] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.949032][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.949410][ T316] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.949737][ T316] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.950162][ T316] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.950512][ T316] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.951201][ T316] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.951617][ T316] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.952072][ T316] ___sys_sendmsg (net/socket.c:2670) 
[ 20.952453][ T316] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.959627][ T316] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.959974][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.960288][ T316] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.960718][ T316] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.961054][ T316] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.961422][ T316] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.961959][ T316] __sys_sendmsg (net/socket.c:2700) 
[ 20.962362][ T316] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.962768][ T316] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.963245][ T316] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.963639][ T316] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.963975][ T316] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.964291][ T316] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.964731][  T316] RIP: 0033:0x7f3f13c151e7
[ 20.965077][ T316] Code: Unable to access opcode bytes at 0x7f3f13c151bd.

Code starting with the faulting instruction
===========================================
[   20.965860][  T316] RSP: 002b:00007ffc7c982078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.966345][  T316] RAX: ffffffffffffffda RBX: 00007ffc7c9827a0 RCX: 00007f3f13c151e7
[   20.967079][  T316] RDX: 0000000000000000 RSI: 00007ffc7c9820e0 RDI: 0000000000000005
[   20.967879][  T316] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.968434][  T316] R10: 00007f3f13b0d6f8 R11: 0000000000000246 R12: 00007ffc7c9827c0
[   20.968999][  T316] R13: 00000000686e68f8 R14: 0000000000499600 R15: 00007ffc7c9821cc
| [   23.909699][  T344] ------------[ cut here ]------------
| [ 23.910146][ T344] WARNING: CPU: 3 PID: 344 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) 
| [   23.910792][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.912361][  T344] Tainted: [W]=WARN
[   23.912632][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.913053][ T344] 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) 
[ 23.913405][ T344] 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
[   23.914897][  T344] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   23.915340][  T344] RAX: 0000000000000000 RBX: ffff888009662000 RCX: 0000000000000001
[   23.915846][  T344] RDX: 0000000000000000 RSI: ffffffff8e29b939 RDI: ffffffff8da555e0
[   23.916329][  T344] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.916810][  T344] R10: ffffc90000577010 R11: ffffffff8f0a8918 R12: 1ffff920000aede2
[   23.917311][  T344] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff888009662f08
[   23.917811][  T344] FS:  00007f88ed02e800(0000) GS:ffff8880a6037000(0000) knlGS:0000000000000000
[   23.918389][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.918808][  T344] CR2: 00000000004e5aa8 CR3: 0000000004c80004 CR4: 0000000000772ef0
[   23.919304][  T344] PKRU: 55555554
[   23.919547][  T344] Call Trace:
[   23.919789][  T344]  <TASK>
[ 23.919966][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.920311][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.920646][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.920981][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.921387][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.921722][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.922051][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.922387][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.922853][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.923100][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.923542][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.923920][ T344] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.924261][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.924588][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.925005][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.925340][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.925662][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.925998][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.926325][ T344] ? __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) 
[ 23.926657][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.927067][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.927399][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.927720][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.928050][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.928380][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.928702][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.929041][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 23.929368][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.929713][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.930062][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.930489][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.930829][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.931162][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.931484][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.931828][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.932163][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.932499][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.932844][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.933162][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.933501][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.933836][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.934171][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.934492][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.934811][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.935150][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.935474][ T344] ? 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) 
[ 23.935801][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.936132][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.936461][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.936785][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.937123][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.937463][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.937811][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.938151][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.938474][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.938900][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.939235][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.939561][ T344] ? __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) 
[ 23.939980][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.940309][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.940653][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.940990][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.941314][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.941649][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.942004][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.942330][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.942733][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.943084][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.943421][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.943745][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.944164][  T344] RIP: 0033:0x7f88ed1fb1e7
[ 23.944515][ T344] 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)
[   23.945671][  T344] RSP: 002b:00007ffe4ef500e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.946174][  T344] RAX: ffffffffffffffda RBX: 00007ffe4ef50810 RCX: 00007f88ed1fb1e7
[   23.946660][  T344] RDX: 0000000000000000 RSI: 00007ffe4ef50150 RDI: 0000000000000005
[   23.947171][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.947666][  T344] R10: 000000003509d910 R11: 0000000000000246 R12: 0000000000000004
[   23.948182][  T344] R13: 00000000686e68fb R14: 0000000000499600 R15: 0000000000000000
| [   24.213362][  T346] ------------[ cut here ]------------
| [ 24.213681][ T346] WARNING: CPU: 1 PID: 346 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) 
| [   24.214305][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.215699][  T346] Tainted: [W]=WARN
[   24.216922][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.217308][ T346] 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) 
[ 24.217642][ T346] 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
[   24.218755][  T346] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   24.219155][  T346] RAX: 0000000000000000 RBX: ffff888009662000 RCX: 0000000000000001
[   24.219612][  T346] RDX: 0000000000000000 RSI: ffffffff8e29b939 RDI: ffffffff8da555e0
[   24.220086][  T346] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.220544][  T346] R10: ffffc90000557010 R11: ffffffff8f0a8918 R12: 1ffff920000aade2
[   24.221012][  T346] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff888009662f08
[   24.221475][  T346] FS:  00007f213a7b6800(0000) GS:ffff8880a5f37000(0000) knlGS:0000000000000000
[   24.222032][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.222420][  T346] CR2: 00000000004e5ab0 CR3: 000000000946c002 CR4: 0000000000772ef0
[   24.222895][  T346] PKRU: 55555554
[   24.223130][  T346] Call Trace:
[   24.223363][  T346]  <TASK>
[ 24.223638][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.223964][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.224281][ T346] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.224596][ T346] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.224987][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.225295][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 24.225606][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.225930][ T346] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.226363][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.226607][ T346] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.227037][ T346] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.227407][ T346] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.227723][ T346] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.228052][ T346] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.228445][ T346] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.228753][ T346] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.229084][ T346] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.229400][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.229712][ T346] ? __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) 
[ 24.230034][ T346] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.230413][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.230742][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.231065][ T346] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.231379][ T346] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.231690][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.232007][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.232314][ T346] ? __create_object (mm/kmemleak.c:771) 
[ 24.232626][ T346] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.232949][ T346] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.233258][ T346] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.233640][ T346] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.233975][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.234289][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.234596][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.234918][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.235225][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.235530][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.235857][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.236166][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.236483][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.236793][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.237117][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.237439][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.237749][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.238076][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.238385][ T346] ? 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) 
[ 24.238703][ T346] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.239026][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.239333][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.239648][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.239967][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.240275][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.240590][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.240917][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.241224][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.241615][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 24.241933][ T346] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.242241][ T346] ? __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) 
[ 24.242625][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.242946][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.243266][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.243583][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.243904][ T346] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.244212][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.244523][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 24.244845][ T346] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.245229][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.245553][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.245872][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.246184][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.246563][  T346] RIP: 0033:0x7f213a9831e7
[ 24.246893][ T346] 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)
[   24.248061][  T346] RSP: 002b:00007fff26c0aa28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.248528][  T346] RAX: ffffffffffffffda RBX: 00007fff26c0b150 RCX: 00007f213a9831e7
[   24.249004][  T346] RDX: 0000000000000000 RSI: 00007fff26c0aa90 RDI: 0000000000000005
[   24.249468][  T346] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.249945][  T346] R10: 00000000111d6910 R11: 0000000000000246 R12: 0000000000000004
[   24.250407][  T346] R13: 00000000686e68fb R14: 0000000000499600 R15: 0000000000000000
| [   24.724456][  T349] ------------[ cut here ]------------
| [ 24.725612][ T349] WARNING: CPU: 0 PID: 349 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) 
| [   24.726478][  T349] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.728037][  T349] Tainted: [W]=WARN
[   24.728277][  T349] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.728698][ T349] 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) 
[ 24.729033][ T349] 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
[   24.730354][  T349] RSP: 0018:ffffc90000b57000 EFLAGS: 00010246
[   24.730785][  T349] RAX: 0000000000000000 RBX: ffff88800904c000 RCX: 0000000000000001
[   24.731330][  T349] RDX: 0000000000000000 RSI: ffffffff8e29b939 RDI: ffffffff8da555e0
[   24.731827][  T349] RBP: ffffc90000b570e8 R08: ffff88800904c218 R09: 0000000000000000
[   24.732308][  T349] R10: ffffc90000b57118 R11: ffffffff8e779160 R12: 1ffff9200016ae04
[   24.732808][  T349] R13: 00000000000005b6 R14: ffffc90000b57118 R15: ffff88800904c218
[   24.733383][  T349] FS:  00007f5080770800(0000) GS:ffff8880a5eb7000(0000) knlGS:0000000000000000
[   24.734071][  T349] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.734473][  T349] CR2: 00007f5080870130 CR3: 000000000b971003 CR4: 0000000000772ef0
[   24.734988][  T349] PKRU: 55555554
[   24.735267][  T349] Call Trace:
[   24.735588][  T349]  <TASK>
[ 24.735750][ T349] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.736159][ T349] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.736502][ T349] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.736921][ T349] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.737328][ T349] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.737718][ T349] netif_set_mtu (net/core/dev.c:9652) 
[ 24.738047][ T349] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.738368][ T349] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.738693][ T349] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.738998][ T349] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.739349][ T349] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.739681][ T349] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.740103][ T349] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.740500][ T349] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.740870][ T349] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.741275][ T349] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 24.741659][ T349] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.742026][ T349] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.742350][ T349] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.742685][ T349] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.743051][ T349] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.743406][ T349] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.743754][ T349] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.744181][ T349] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.744503][ T349] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.744979][ T349] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.745314][ T349] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.745729][ T349] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.746073][ T349] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.746490][ T349] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.746842][ T349] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.747234][ T349] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.747655][ T349] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.748013][ T349] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.748433][ T349] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.748782][ T349] ? 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) 
[ 24.749114][ T349] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.749537][ T349] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.749972][ T349] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.750315][ T349] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.750856][ T349] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.751246][ T349] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.751699][ T349] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.752075][ T349] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.752402][ T349] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.752861][ T349] ___sys_sendmsg (net/socket.c:2670) 
[ 24.753191][ T349] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.753554][ T349] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.754014][ T349] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.754338][ T349] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.754683][ T349] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.755016][ T349] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.755355][ T349] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.756066][ T349] __sys_sendmsg (net/socket.c:2700) 
[ 24.756466][ T349] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.756991][ T349] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 24.757565][ T349] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 24.758545][ T349] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.759129][ T349] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.759661][ T349] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.760352][  T349] RIP: 0033:0x7f508093d1e7
[ 24.761400][ T349] 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)
[   24.763889][  T349] RSP: 002b:00007ffc8caff058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.765193][  T349] RAX: ffffffffffffffda RBX: 00007ffc8caff780 RCX: 00007f508093d1e7
[   24.765804][  T349] RDX: 0000000000000000 RSI: 00007ffc8caff0c0 RDI: 0000000000000005
[   24.766301][  T349] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.767046][  T349] R10: 00007f50808356f8 R11: 0000000000000246 R12: 00007ffc8caff7a0


Finger prints:
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:ip_tunnel_newlink:ipgre_newlink
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if