======================================
| [   66.234109][  T616] ip_gre: GRE over IPv4 tunneling driver
| [   66.326140][  T615] ------------[ cut here ]------------
| [ 66.326670][ T615] WARNING: CPU: 2 PID: 615 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) 
| [   66.327338][  T615] Modules linked in: ip_gre gre sch_ingress vrf veth
[   66.328441][  T615] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 66.328865][ T615] 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) 
[ 66.329218][ T615] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   66.330393][  T615] RSP: 0018:ffffc90000617000 EFLAGS: 00010246
[   66.330832][  T615] RAX: 0000000000000000 RBX: ffff88800e001000 RCX: 0000000000000001
[   66.331365][  T615] RDX: 0000000000000000 RSI: ffffffffa269b941 RDI: ffffffffa1e555e0
[   66.331860][  T615] RBP: ffffc900006170e8 R08: ffff88800e001218 R09: 0000000000000000
[   66.332355][  T615] R10: ffffc90000617118 R11: ffffffffa2b79160 R12: 1ffff920000c2e04
[   66.332856][  T615] R13: 00000000000005b6 R14: ffffc90000617118 R15: ffff88800e001218
[   66.333376][  T615] FS:  00007f8fa25fe800(0000) GS:ffff888091bb7000(0000) knlGS:0000000000000000
[   66.333947][  T615] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.334655][  T615] CR2: 000056003c5af020 CR3: 0000000004d74003 CR4: 0000000000772ef0
[   66.335713][  T615] PKRU: 55555554
[   66.335974][  T615] Call Trace:
[   66.336230][  T615]  <TASK>
[ 66.336427][ T615] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 66.336847][ T615] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.337182][ T615] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 66.337529][ T615] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 66.337867][ T615] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 66.338213][ T615] netif_set_mtu (net/core/dev.c:9652) 
[ 66.338552][ T615] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 66.338899][ T615] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 66.339231][ T615] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 66.339494][ T615] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 66.339828][ T615] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 66.340405][ T615] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 66.340745][ T615] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 66.341159][ T615] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 66.341510][ T615] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 66.341844][ T615] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 66.342194][ T615] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 66.342534][ T615] ? __dev_get_by_name (net/core/dev.c:865) 
[ 66.343097][ T615] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 66.343458][ T615] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 66.343802][ T615] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 66.344131][ T615] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 66.344487][ T615] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 66.344832][ T615] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 66.345180][ T615] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.345538][ T615] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 66.345866][ T615] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.346210][ T615] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.346566][ T615] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 66.346905][ T615] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.347241][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.347589][ T615] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 66.348159][ T615] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.348502][ T615] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 66.349077][ T615] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 66.349414][ T615] ? 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) 
[ 66.349746][ T615] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.350075][ T615] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 66.350653][ T615] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.350994][ T615] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.351794][ T615] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 66.352132][ T615] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 66.352478][ T615] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.352819][ T615] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 66.353145][ T615] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 66.353594][ T615] ___sys_sendmsg (net/socket.c:2670) 
[ 66.353924][ T615] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 66.354939][ T615] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 66.355276][ T615] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 66.355617][ T615] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 66.356182][ T615] ? __handle_mm_fault (mm/memory.c:6212) 
[ 66.356523][ T615] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 66.357077][ T615] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 66.357436][ T615] __sys_sendmsg (net/socket.c:2700) 
[ 66.357769][ T615] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 66.358099][ T615] ? 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) 
[ 66.358463][ T615] ? 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) 
[ 66.358795][ T615] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.359124][ T615] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.359463][ T615] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.359867][  T615] RIP: 0033:0x7f8fa27cb1e7
[ 66.360237][ T615] Code: Unable to access opcode bytes at 0x7f8fa27cb1bd.

Code starting with the faulting instruction
===========================================
[   66.360671][  T615] RSP: 002b:00007ffd62d5b818 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.361165][  T615] RAX: ffffffffffffffda RBX: 00007ffd62d5bf40 RCX: 00007f8fa27cb1e7
[   66.361671][  T615] RDX: 0000000000000000 RSI: 00007ffd62d5b880 RDI: 0000000000000005
[   66.362157][  T615] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   66.362679][  T615] R10: 00007f8fa26c36f8 R11: 0000000000000246 R12: 00007ffd62d5bf60
[   66.363167][  T615] R13: 00000000686e15a5 R14: 0000000000499600 R15: 00007ffd62d5b96c
| [   69.387303][  T644] ------------[ cut here ]------------
| [ 69.387710][ T644] WARNING: CPU: 3 PID: 644 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) 
| [   69.389601][  T644] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   69.391448][  T644] Tainted: [W]=WARN
[   69.391705][  T644] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 69.392137][ T644] 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) 
[ 69.392516][ T644] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   69.393767][  T644] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   69.394196][  T644] RAX: 0000000000000000 RBX: ffff88800e69a000 RCX: 0000000000000001
[   69.394708][  T644] RDX: 0000000000000000 RSI: ffffffffa269b941 RDI: ffffffffa1e555e0
[   69.395216][  T644] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   69.395734][  T644] R10: ffffc90000577010 R11: ffffffffa34a8918 R12: 1ffff920000aede2
[   69.396242][  T644] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800e69af08
[   69.396761][  T644] FS:  00007f2735297800(0000) GS:ffff888091c37000(0000) knlGS:0000000000000000
[   69.397374][  T644] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.397800][  T644] CR2: 00000000004e5aa8 CR3: 0000000004e12005 CR4: 0000000000772ef0
[   69.398303][  T644] PKRU: 55555554
[   69.398569][  T644] Call Trace:
[   69.398820][  T644]  <TASK>
[ 69.398998][ T644] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 69.399336][ T644] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.399702][ T644] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 69.400038][ T644] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 69.400472][ T644] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 69.400819][ T644] netif_set_mtu (net/core/dev.c:9652) 
[ 69.401157][ T644] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 69.401515][ T644] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 69.401983][ T644] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 69.402244][ T644] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 69.402711][ T644] br_add_if (net/bridge/br_if.c:697) bridge 
[ 69.403096][ T644] do_set_master (net/core/rtnetlink.c:2948) 
[ 69.403468][ T644] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 69.403810][ T644] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 69.404228][ T644] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 69.404572][ T644] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 69.404917][ T644] ? __kernel_text_address (kernel/extable.c:79) 
[ 69.405256][ T644] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.405608][ T644] ? __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) 
[ 69.405943][ T644] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 69.406367][ T644] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 69.406704][ T644] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 69.407036][ T644] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 69.407390][ T644] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 69.407722][ T644] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.408056][ T644] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 69.408398][ T644] ? __create_object (mm/kmemleak.c:771) 
[ 69.408738][ T644] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 69.409070][ T644] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 69.409413][ T644] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 69.409834][ T644] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 69.410175][ T644] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 69.410526][ T644] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 69.410859][ T644] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.411198][ T644] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.411545][ T644] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 69.411876][ T644] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 69.412212][ T644] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 69.412565][ T644] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 69.412898][ T644] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 69.413245][ T644] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.413596][ T644] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 69.413930][ T644] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 69.414267][ T644] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 69.414625][ T644] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 69.414961][ T644] ? 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) 
[ 69.415299][ T644] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 69.415645][ T644] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 69.415978][ T644] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.416320][ T644] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 69.416673][ T644] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 69.417010][ T644] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 69.417363][ T644] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 69.417710][ T644] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 69.418042][ T644] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 69.418483][ T644] ___sys_sendmsg (net/socket.c:2670) 
[ 69.418812][ T644] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 69.419145][ T644] ? __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) 
[ 69.419574][ T644] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 69.419919][ T644] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.420259][ T644] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.420609][ T644] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.420942][ T644] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 69.421274][ T644] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 69.421627][ T644] __sys_sendmsg (net/socket.c:2700) 
[ 69.421961][ T644] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 69.422380][ T644] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 69.422734][ T644] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 69.423073][ T644] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 69.423434][ T644] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   69.423848][  T644] RIP: 0033:0x7f27354641e7
[ 69.424194][ T644] 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)
[   69.425391][  T644] RSP: 002b:00007fff1935a078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   69.425903][  T644] RAX: ffffffffffffffda RBX: 00007fff1935a7a0 RCX: 00007f27354641e7
[   69.426408][  T644] RDX: 0000000000000000 RSI: 00007fff1935a0e0 RDI: 0000000000000005
[   69.426905][  T644] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   69.427418][  T644] R10: 0000000037ce2910 R11: 0000000000000246 R12: 0000000000000004
[   69.427918][  T644] R13: 00000000686e15a8 R14: 0000000000499600 R15: 0000000000000000
| [   69.683672][  T646] ------------[ cut here ]------------
| [ 69.684038][ T646] WARNING: CPU: 0 PID: 646 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) 
| [   69.685149][  T646] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   69.686621][  T646] Tainted: [W]=WARN
[   69.686875][  T646] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 69.687286][ T646] 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) 
[ 69.687648][ T646] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   69.688845][  T646] RSP: 0018:ffffc90001056ef0 EFLAGS: 00010246
[   69.689266][  T646] RAX: 0000000000000000 RBX: ffff88800e69a000 RCX: 0000000000000001
[   69.689774][  T646] RDX: 0000000000000000 RSI: ffffffffa269b941 RDI: ffffffffa1e555e0
[   69.690272][  T646] RBP: ffffc90001056fe0 R08: 0000000000000000 R09: 0000000000000000
[   69.690793][  T646] R10: ffffc90001057010 R11: ffffffffa34a8918 R12: 1ffff9200020ade2
[   69.691296][  T646] R13: 00000000000005dc R14: ffffc90001057010 R15: ffff88800e69af08
[   69.691804][  T646] FS:  00007f30dfb80800(0000) GS:ffff888091ab7000(0000) knlGS:0000000000000000
[   69.692396][  T646] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   69.692810][  T646] CR2: 00000000004e5ab0 CR3: 0000000004e12004 CR4: 0000000000772ef0
[   69.693323][  T646] PKRU: 55555554
[   69.693590][  T646] Call Trace:
[   69.693839][  T646]  <TASK>
[ 69.694012][ T646] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 69.694361][ T646] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.694705][ T646] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 69.695036][ T646] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 69.695460][ T646] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 69.695803][ T646] netif_set_mtu (net/core/dev.c:9652) 
[ 69.696138][ T646] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 69.696490][ T646] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 69.696954][ T646] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 69.697208][ T646] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 69.697674][ T646] br_add_if (net/bridge/br_if.c:697) bridge 
[ 69.698054][ T646] do_set_master (net/core/rtnetlink.c:2948) 
[ 69.698411][ T646] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 69.698753][ T646] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 69.699185][ T646] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 69.699527][ T646] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 69.699859][ T646] ? __kernel_text_address (kernel/extable.c:79) 
[ 69.700195][ T646] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.700547][ T646] ? __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) 
[ 69.700889][ T646] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 69.701301][ T646] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 69.701643][ T646] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 69.701975][ T646] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 69.702310][ T646] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 69.702655][ T646] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.702987][ T646] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 69.703326][ T646] ? __create_object (mm/kmemleak.c:771) 
[ 69.703678][ T646] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 69.704011][ T646] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 69.704353][ T646] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 69.704765][ T646] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 69.705105][ T646] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 69.705451][ T646] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 69.705779][ T646] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.706120][ T646] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.706461][ T646] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 69.706790][ T646] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 69.707128][ T646] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 69.707469][ T646] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 69.707806][ T646] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 69.708144][ T646] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.708498][ T646] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 69.708833][ T646] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 69.709169][ T646] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 69.709519][ T646] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 69.709849][ T646] ? 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) 
[ 69.710180][ T646] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 69.710526][ T646] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 69.710866][ T646] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.711201][ T646] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 69.711546][ T646] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 69.711880][ T646] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 69.712223][ T646] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 69.712569][ T646] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 69.712896][ T646] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 69.713355][ T646] ___sys_sendmsg (net/socket.c:2670) 
[ 69.713688][ T646] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 69.714017][ T646] ? __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) 
[ 69.714443][ T646] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 69.714780][ T646] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.715114][ T646] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 69.715463][ T646] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 69.715797][ T646] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 69.716131][ T646] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 69.716484][ T646] __sys_sendmsg (net/socket.c:2700) 
[ 69.716815][ T646] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 69.717224][ T646] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 69.717576][ T646] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 69.717914][ T646] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 69.718247][ T646] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   69.718676][  T646] RIP: 0033:0x7f30dfd4d1e7
[ 69.719021][ T646] 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)
[   69.720212][  T646] RSP: 002b:00007ffd14bd8a88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   69.720726][  T646] RAX: ffffffffffffffda RBX: 00007ffd14bd91b0 RCX: 00007f30dfd4d1e7
[   69.721223][  T646] RDX: 0000000000000000 RSI: 00007ffd14bd8af0 RDI: 0000000000000005
[   69.721732][  T646] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   69.722229][  T646] R10: 0000000005ee8910 R11: 0000000000000246 R12: 0000000000000004
[   69.722738][  T646] R13: 00000000686e15a9 R14: 0000000000499600 R15: 0000000000000000
| [   70.154932][  T649] ------------[ cut here ]------------
| [ 70.155321][ T649] WARNING: CPU: 3 PID: 649 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) 
| [   70.156004][  T649] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   70.157873][  T649] Tainted: [W]=WARN
[   70.158125][  T649] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 70.158558][ T649] 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) 
[ 70.158902][ T649] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   70.160092][  T649] RSP: 0018:ffffc90000ff7000 EFLAGS: 00010246
[   70.160517][  T649] RAX: 0000000000000000 RBX: ffff8880080c9000 RCX: 0000000000000001
[   70.161014][  T649] RDX: 0000000000000000 RSI: ffffffffa269b941 RDI: ffffffffa1e555e0
[   70.161545][  T649] RBP: ffffc90000ff70e8 R08: ffff8880080c9218 R09: 0000000000000000
[   70.162048][  T649] R10: ffffc90000ff7118 R11: ffffffffa2b79160 R12: 1ffff920001fee04
[   70.162557][  T649] R13: 00000000000005b6 R14: ffffc90000ff7118 R15: ffff8880080c9218
[   70.163056][  T649] FS:  00007f83e3c5b800(0000) GS:ffff888091c37000(0000) knlGS:0000000000000000
[   70.163661][  T649] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   70.164081][  T649] CR2: 0000000000436890 CR3: 0000000009450003 CR4: 0000000000772ef0
[   70.164604][  T649] PKRU: 55555554
[   70.164856][  T649] Call Trace:
[   70.165106][  T649]  <TASK>
[ 70.165274][ T649] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 70.165699][ T649] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 70.166036][ T649] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 70.166381][ T649] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 70.166721][ T649] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 70.167069][ T649] netif_set_mtu (net/core/dev.c:9652) 
[ 70.167422][ T649] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 70.167772][ T649] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 70.168115][ T649] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 70.168376][ T649] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 70.168715][ T649] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 70.169056][ T649] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 70.169403][ T649] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 70.169827][ T649] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 70.170171][ T649] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 70.170516][ T649] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 70.170855][ T649] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 70.171182][ T649] ? __dev_get_by_name (net/core/dev.c:865) 
[ 70.171526][ T649] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 70.171861][ T649] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 70.172206][ T649] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 70.172543][ T649] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 70.172886][ T649] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 70.173239][ T649] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 70.173589][ T649] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 70.173934][ T649] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 70.174264][ T649] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 70.174610][ T649] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 70.174949][ T649] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 70.175285][ T649] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 70.175632][ T649] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 70.175973][ T649] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 70.176308][ T649] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 70.176653][ T649] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 70.177002][ T649] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 70.177350][ T649] ? 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) 
[ 70.177684][ T649] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 70.178021][ T649] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 70.178363][ T649] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 70.178703][ T649] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 70.179041][ T649] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 70.179384][ T649] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 70.179740][ T649] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 70.180082][ T649] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 70.180424][ T649] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 70.180849][ T649] ___sys_sendmsg (net/socket.c:2670) 
[ 70.181181][ T649] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 70.181515][ T649] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 70.181854][ T649] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 70.182190][ T649] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 70.182533][ T649] ? __handle_mm_fault (mm/memory.c:6212) 
[ 70.182865][ T649] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 70.183205][ T649] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 70.183566][ T649] __sys_sendmsg (net/socket.c:2700) 
[ 70.183906][ T649] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 70.184243][ T649] ? 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) 
[ 70.184597][ T649] ? 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) 
[ 70.184933][ T649] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 70.185270][ T649] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 70.185610][ T649] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   70.186029][  T649] RIP: 0033:0x7f83e3e281e7
[ 70.186394][ T649] 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)
[   70.187590][  T649] RSP: 002b:00007ffc703e0d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   70.188095][  T649] RAX: ffffffffffffffda RBX: 00007ffc703e1480 RCX: 00007f83e3e281e7
[   70.188607][  T649] RDX: 0000000000000000 RSI: 00007ffc703e0dc0 RDI: 0000000000000005
[   70.189141][  T649] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   70.189649][  T649] R10: 00007f83e3d206f8 R11: 0000000000000246 R12: 00007ffc703e14a0


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