======================================
| [   19.955862][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.035165][  T313] ------------[ cut here ]------------
| [ 20.035620][ T313] WARNING: CPU: 0 PID: 313 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) 
| [   20.036243][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.037255][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.037666][ T313] 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) 
[ 20.037990][ T313] 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
[   20.039103][  T313] RSP: 0018:ffffc900005a7000 EFLAGS: 00010246
[   20.039511][  T313] RAX: 0000000000000000 RBX: ffff8880094bc000 RCX: 0000000000000001
[   20.040150][  T313] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   20.040630][  T313] RBP: ffffc900005a70e8 R08: ffff8880094bc218 R09: 0000000000000000
[   20.041091][  T313] R10: ffffc900005a7118 R11: ffffffff99579160 R12: 1ffff920000b4e04
[   20.041568][  T313] R13: 00000000000005b6 R14: ffffc900005a7118 R15: ffff8880094bc218
[   20.042736][  T313] FS:  00007f1b1c4fe800(0000) GS:ffff88809b0b7000(0000) knlGS:0000000000000000
[   20.043743][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.044147][  T313] CR2: 0000000000436890 CR3: 0000000004fef001 CR4: 0000000000772ef0
[   20.044707][  T313] PKRU: 55555554
[   20.044951][  T313] Call Trace:
[   20.045183][  T313]  <TASK>
[ 20.045359][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.045746][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.046053][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.046376][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.046687][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.047003][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.047330][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.047650][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.047960][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.048193][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.048506][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.048821][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.049134][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.049528][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.049844][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.050156][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.050473][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.050780][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.051086][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.051403][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.051722][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.052026][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.052346][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.052670][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.052986][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.053314][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.053686][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.054005][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.054326][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.054635][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.054949][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.055270][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.055801][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.056562][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.056882][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.057193][ T313] ? 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) 
[ 20.057509][ T313] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.057821][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.058130][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.058453][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.064694][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.065007][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.065564][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.065877][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.066416][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.066811][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.067121][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.067434][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.068193][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.068515][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.068834][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.069138][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.069457][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.069784][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.070092][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.070406][ T313] ? 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) 
[ 20.070721][ T313] ? 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) 
[ 20.071518][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.071827][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.072137][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.072743][  T313] RIP: 0033:0x7f1b1c6cb1e7
[ 20.073071][ T313] Code: Unable to access opcode bytes at 0x7f1b1c6cb1bd.

Code starting with the faulting instruction
===========================================
[   20.073477][  T313] RSP: 002b:00007ffd7653aa08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.073960][  T313] RAX: ffffffffffffffda RBX: 00007ffd7653b130 RCX: 00007f1b1c6cb1e7
[   20.074441][  T313] RDX: 0000000000000000 RSI: 00007ffd7653aa70 RDI: 0000000000000005
[   20.074901][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.075815][  T313] R10: 00007f1b1c5c36f8 R11: 0000000000000246 R12: 00007ffd7653b150
[   20.076288][  T313] R13: 00000000686e7153 R14: 0000000000499600 R15: 00007ffd7653ab5c
| [   22.849554][  T342] ------------[ cut here ]------------
| [ 22.849872][ T342] WARNING: CPU: 1 PID: 342 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) 
| [   22.850631][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.852197][  T342] Tainted: [W]=WARN
[   22.852447][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.852877][ T342] 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) 
[ 22.853197][ T342] 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
[   22.854334][  T342] RSP: 0018:ffffc90000526ef0 EFLAGS: 00010246
[   22.854725][  T342] RAX: 0000000000000000 RBX: ffff88800ea9a000 RCX: 0000000000000001
[   22.855181][  T342] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   22.856742][  T342] RBP: ffffc90000526fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.857205][  T342] R10: ffffc90000527010 R11: ffffffff99ea8918 R12: 1ffff920000a4de2
[   22.857674][  T342] R13: 00000000000005dc R14: ffffc90000527010 R15: ffff88800ea9af08
[   22.858235][  T342] FS:  00007f977e379800(0000) GS:ffff88809b137000(0000) knlGS:0000000000000000
[   22.858798][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.859182][  T342] CR2: 00000000004e5aa8 CR3: 000000000a59f004 CR4: 0000000000772ef0
[   22.859648][  T342] PKRU: 55555554
[   22.859878][  T342] Call Trace:
[   22.860110][  T342]  <TASK>
[ 22.860278][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.860585][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.860907][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.861210][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.861599][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.861906][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 22.862209][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.862543][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.862976][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.863208][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.863640][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.864021][ T342] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.864342][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.864650][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.865040][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.865380][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.865685][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.865993][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.866322][ T342] ? __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) 
[ 22.866630][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.867010][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.867332][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.867646][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.867951][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.868272][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.868580][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.868881][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 22.869189][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.869504][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.869819][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.870204][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.870537][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.870849][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.871154][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.871474][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.871783][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.872087][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.872408][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.872723][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.873031][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.873350][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.873726][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.874036][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.874367][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.874683][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.874989][ T342] ? 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) 
[ 22.875307][ T342] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.875623][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.875927][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.876238][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.876557][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.876864][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.877184][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.877503][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.877808][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.878197][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 22.878526][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.878833][ T342] ? __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) 
[ 22.879227][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.879552][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.879864][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.880176][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.880492][ T342] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.880797][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.881113][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 22.881423][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.881808][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.882153][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.882488][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.882797][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.883174][  T342] RIP: 0033:0x7f977e5461e7
[ 22.883501][ T342] 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)
[   22.884623][  T342] RSP: 002b:00007ffc278a8d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.885087][  T342] RAX: ffffffffffffffda RBX: 00007ffc278a94c0 RCX: 00007f977e5461e7
[   22.885553][  T342] RDX: 0000000000000000 RSI: 00007ffc278a8e00 RDI: 0000000000000005
[   22.886013][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.886500][  T342] R10: 0000000021103910 R11: 0000000000000246 R12: 0000000000000004
[   22.886959][  T342] R13: 00000000686e7156 R14: 0000000000499600 R15: 0000000000000000
| [   23.134084][  T344] ------------[ cut here ]------------
| [ 23.134425][ 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) 
| [   23.135025][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.137456][  T344] Tainted: [W]=WARN
[   23.137689][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.138068][ 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) 
[ 23.138390][ 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
[   23.139484][  T344] RSP: 0018:ffffc90000636ef0 EFLAGS: 00010246
[   23.139869][  T344] RAX: 0000000000000000 RBX: ffff88800ea9a000 RCX: 0000000000000001
[   23.140328][  T344] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   23.140787][  T344] RBP: ffffc90000636fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.141241][  T344] R10: ffffc90000637010 R11: ffffffff99ea8918 R12: 1ffff920000c6de2
[   23.141709][  T344] R13: 00000000000005dc R14: ffffc90000637010 R15: ffff88800ea9af08
[   23.142164][  T344] FS:  00007f7c44aca800(0000) GS:ffff88809b237000(0000) knlGS:0000000000000000
[   23.142700][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.143084][  T344] CR2: 00000000004e5ab0 CR3: 0000000009379003 CR4: 0000000000772ef0
[   23.143559][  T344] PKRU: 55555554
[   23.143789][  T344] Call Trace:
[   23.144019][  T344]  <TASK>
[ 23.144176][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.144490][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.144802][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.145106][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.145494][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.145806][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.146113][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.146435][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.146855][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.147089][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.147506][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.147854][ T344] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.148168][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.148485][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.148874][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.149178][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.149491][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.149798][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.150110][ 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) 
[ 23.150423][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.150800][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.151102][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.151413][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.151715][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.152018][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.152334][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.152647][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 23.152955][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.153267][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.153581][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.154010][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.154336][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.154674][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.154984][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.155307][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.155665][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.155968][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.156288][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.156593][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.156898][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.157209][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.157536][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.157842][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.158146][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.158470][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.158778][ 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) 
[ 23.159081][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.159398][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.159705][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.160017][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.160335][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.160642][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.160955][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.161274][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.161577][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.162066][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.162401][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.162703][ 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) 
[ 23.163082][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.163398][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.163717][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.164029][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.164349][ 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) 
[ 23.164654][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.164967][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.165277][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.165655][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.165972][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.166285][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.166592][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.166997][  T344] RIP: 0033:0x7f7c44c971e7
[ 23.167340][ 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)
[   23.168434][  T344] RSP: 002b:00007ffd1f9cccf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.168902][  T344] RAX: ffffffffffffffda RBX: 00007ffd1f9cd420 RCX: 00007f7c44c971e7
[   23.169368][  T344] RDX: 0000000000000000 RSI: 00007ffd1f9ccd60 RDI: 0000000000000005
[   23.169825][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.170293][  T344] R10: 000000000a576910 R11: 0000000000000246 R12: 0000000000000004
[   23.170782][  T344] R13: 00000000686e7156 R14: 0000000000499600 R15: 0000000000000000
| [   23.552872][  T347] ------------[ cut here ]------------
| [ 23.553219][ T347] WARNING: CPU: 3 PID: 347 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) 
| [   23.553863][  T347] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.555450][  T347] Tainted: [W]=WARN
[   23.555684][  T347] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.556066][ T347] 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) 
[ 23.556408][ T347] 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
[   23.557509][  T347] RSP: 0018:ffffc90000657000 EFLAGS: 00010246
[   23.557901][  T347] RAX: 0000000000000000 RBX: ffff888005184000 RCX: 0000000000000001
[   23.558369][  T347] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   23.558823][  T347] RBP: ffffc900006570e8 R08: ffff888005184218 R09: 0000000000000000
[   23.559287][  T347] R10: ffffc90000657118 R11: ffffffff99579160 R12: 1ffff920000cae04
[   23.559741][  T347] R13: 00000000000005b6 R14: ffffc90000657118 R15: ffff888005184218
[   23.560193][  T347] FS:  00007fd199e88800(0000) GS:ffff88809b237000(0000) knlGS:0000000000000000
[   23.560736][  T347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.561124][  T347] CR2: 0000000000436890 CR3: 000000000934f006 CR4: 0000000000772ef0
[   23.561588][  T347] PKRU: 55555554
[   23.561815][  T347] Call Trace:
[   23.562039][  T347]  <TASK>
[ 23.562193][ T347] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.562588][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.562898][ T347] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.563208][ T347] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.563519][ T347] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.563837][ T347] netif_set_mtu (net/core/dev.c:9652) 
[ 23.564141][ T347] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.564464][ T347] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.564774][ T347] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.565008][ T347] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.565321][ T347] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.565635][ T347] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.565946][ T347] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.566333][ T347] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.566646][ T347] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.566959][ T347] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.567277][ T347] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.567580][ T347] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.567883][ T347] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.568189][ T347] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.568506][ T347] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.568807][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.569125][ T347] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.569451][ T347] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.569761][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.570076][ T347] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.570399][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.570705][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.571008][ T347] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.571332][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.571647][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.571954][ T347] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.572265][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.572568][ T347] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.572881][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.573188][ T347] ? 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) 
[ 23.573500][ T347] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.573919][ T347] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.574227][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.574545][ T347] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.574857][ T347] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.575162][ T347] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.575488][ T347] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.575796][ T347] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.576099][ T347] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.576504][ T347] ___sys_sendmsg (net/socket.c:2670) 
[ 23.576809][ T347] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.577114][ T347] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.577434][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.577736][ T347] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.578042][ T347] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.578357][ T347] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.578658][ T347] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.578978][ T347] __sys_sendmsg (net/socket.c:2700) 
[ 23.579295][ T347] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.579597][ T347] ? 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) 
[ 23.579910][ T347] ? 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) 
[ 23.580216][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.580535][ T347] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.580840][ T347] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.581215][  T347] RIP: 0033:0x7fd19a0551e7
[ 23.581538][ T347] 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)
[   23.582631][  T347] RSP: 002b:00007ffe9ce8dc48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.583089][  T347] RAX: ffffffffffffffda RBX: 00007ffe9ce8e370 RCX: 00007fd19a0551e7
[   23.583561][  T347] RDX: 0000000000000000 RSI: 00007ffe9ce8dcb0 RDI: 0000000000000005
[   23.584017][  T347] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.584475][  T347] R10: 00007fd199f4d6f8 R11: 0000000000000246 R12: 00007ffe9ce8e390


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