======================================
| [   20.524302][  T317] ip_gre: GRE over IPv4 tunneling driver
| [   20.575573][  T316] ------------[ cut here ]------------
| [ 20.576080][ 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) 
| [   20.576811][  T316] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.577978][  T316] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.578413][ 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) 
[ 20.578797][ T316] 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
[   20.580031][  T316] RSP: 0018:ffffc90000577000 EFLAGS: 00010246
[   20.580477][  T316] RAX: 0000000000000000 RBX: ffff888008e6c000 RCX: 0000000000000001
[   20.581016][  T316] RDX: 0000000000000000 RSI: ffffffff85c9b941 RDI: ffffffff854555e0
[   20.581535][  T316] RBP: ffffc900005770e8 R08: ffff888008e6c218 R09: 0000000000000000
[   20.582077][  T316] R10: ffffc90000577118 R11: ffffffff86179160 R12: 1ffff920000aee04
[   20.582600][  T316] R13: 00000000000005b6 R14: ffffc90000577118 R15: ffff888008e6c218
[   20.583127][  T316] FS:  00007f5775317800(0000) GS:ffff8880ae4b7000(0000) knlGS:0000000000000000
[   20.583744][  T316] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.584199][  T316] CR2: 00007fd85a924270 CR3: 0000000004f4e002 CR4: 0000000000772ef0
[   20.584915][  T316] PKRU: 55555554
[   20.585181][  T316] Call Trace:
[   20.585444][  T316]  <TASK>
[ 20.585623][ T316] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.586080][ T316] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.586454][ T316] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.586803][ T316] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.587185][ T316] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.587559][ T316] netif_set_mtu (net/core/dev.c:9652) 
[ 20.587923][ T316] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.588281][ T316] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.588637][ T316] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.588909][ T316] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.589261][ T316] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.589626][ T316] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.589987][ T316] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.590419][ T316] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.600399][ T316] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.600762][ T316] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.601355][ T316] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.601713][ T316] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.602314][ T316] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.602664][ T316] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.603036][ T316] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.603391][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.603746][ T316] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.604123][ T316] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.604487][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.605073][ T316] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.605421][ T316] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.605770][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.606122][ T316] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.606619][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.606981][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.607332][ T316] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.607685][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.608047][ T316] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.608629][ T316] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.608993][ 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) 
[ 20.609356][ T316] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.609709][ T316] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.610060][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.610409][ T316] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.610762][ T316] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.611118][ T316] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.611481][ T316] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.611856][ T316] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.612198][ T316] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.612885][ T316] ___sys_sendmsg (net/socket.c:2670) 
[ 20.613236][ T316] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.613584][ T316] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.613952][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.614309][ T316] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.614676][ T316] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.615040][ T316] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.615389][ T316] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.615767][ T316] __sys_sendmsg (net/socket.c:2700) 
[ 20.616125][ T316] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.616478][ 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) 
[ 20.616861][ 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) 
[ 20.617210][ T316] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.617570][ T316] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.617932][ T316] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.618383][  T316] RIP: 0033:0x7f57754e41e7
[ 20.618997][ T316] Code: Unable to access opcode bytes at 0x7f57754e41bd.

Code starting with the faulting instruction
===========================================
[   20.619445][  T316] RSP: 002b:00007fff64d8b018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.619979][  T316] RAX: ffffffffffffffda RBX: 00007fff64d8b740 RCX: 00007f57754e41e7
[   20.620510][  T316] RDX: 0000000000000000 RSI: 00007fff64d8b080 RDI: 0000000000000005
[   20.621068][  T316] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.621611][  T316] R10: 00007f57753dc6f8 R11: 0000000000000246 R12: 00007fff64d8b760
[   20.622157][  T316] R13: 00000000686e3f22 R14: 0000000000499600 R15: 00007fff64d8b16c
| [   23.451230][  T343] ------------[ cut here ]------------
| [ 23.451550][ T343] WARNING: CPU: 1 PID: 343 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) 
| [   23.452208][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.455395][  T343] Tainted: [W]=WARN
[   23.455632][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.456200][ T343] 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) 
[ 23.456519][ T343] 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
[   23.457800][  T343] RSP: 0018:ffffc90000586ef0 EFLAGS: 00010246
[   23.458310][  T343] RAX: 0000000000000000 RBX: ffff88800bb9a000 RCX: 0000000000000001
[   23.458768][  T343] RDX: 0000000000000000 RSI: ffffffff85c9b941 RDI: ffffffff854555e0
[   23.459273][  T343] RBP: ffffc90000586fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.459751][  T343] R10: ffffc90000587010 R11: ffffffff86aa8918 R12: 1ffff920000b0de2
[   23.460228][  T343] R13: 00000000000005dc R14: ffffc90000587010 R15: ffff88800bb9af08
[   23.460685][  T343] FS:  00007f8a3245c800(0000) GS:ffff8880ae537000(0000) knlGS:0000000000000000
[   23.461261][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.461668][  T343] CR2: 00000000004e5aa8 CR3: 000000000bd1d004 CR4: 0000000000772ef0
[   23.462143][  T343] PKRU: 55555554
[   23.462374][  T343] Call Trace:
[   23.462605][  T343]  <TASK>
[ 23.462765][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.463099][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.463411][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.463719][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.464122][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.464442][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.464751][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.465086][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.465539][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.465773][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.466204][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.466566][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.466889][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.467201][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.467586][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.468116][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.468426][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.468742][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.469080][ T343] ? __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) 
[ 23.469418][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.469799][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.470131][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.470436][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.470742][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.471059][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.471374][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.471689][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.472028][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.472335][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.472648][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.473034][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.473379][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.473697][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.474019][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.474332][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.474640][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.474954][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.475260][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.475565][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.475894][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.476204][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.476521][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.476840][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.477175][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.477495][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.477800][ T343] ? 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) 
[ 23.478115][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.478425][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.478736][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.479059][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.479367][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.479672][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.480007][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.480316][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.480618][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.481041][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.481377][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.481698][ T343] ? __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) 
[ 23.482091][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.482402][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.482710][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.483031][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.483344][ T343] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.483653][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.483986][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.484291][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.484671][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.484998][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.485354][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.485664][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.486054][  T343] RIP: 0033:0x7f8a326291e7
[ 23.486372][ T343] 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)
[   23.487474][  T343] RSP: 002b:00007ffd99268ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.487958][  T343] RAX: ffffffffffffffda RBX: 00007ffd99269200 RCX: 00007f8a326291e7
[   23.488419][  T343] RDX: 0000000000000000 RSI: 00007ffd99268b40 RDI: 0000000000000005
[   23.488884][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.489376][  T343] R10: 0000000007bca910 R11: 0000000000000246 R12: 0000000000000004
[   23.489855][  T343] R13: 00000000686e3f25 R14: 0000000000499600 R15: 0000000000000000
| [   23.737249][  T345] ------------[ cut here ]------------
| [ 23.737566][ T345] WARNING: CPU: 3 PID: 345 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) 
| [   23.738191][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.739533][  T345] Tainted: [W]=WARN
[   23.739763][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.740153][ T345] 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) 
[ 23.740468][ T345] 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
[   23.741583][  T345] RSP: 0018:ffffc90000666ef0 EFLAGS: 00010246
[   23.741988][  T345] RAX: 0000000000000000 RBX: ffff88800bb9a000 RCX: 0000000000000001
[   23.742445][  T345] RDX: 0000000000000000 RSI: ffffffff85c9b941 RDI: ffffffff854555e0
[   23.742919][  T345] RBP: ffffc90000666fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.743377][  T345] R10: ffffc90000667010 R11: ffffffff86aa8918 R12: 1ffff920000ccde2
[   23.743841][  T345] R13: 00000000000005dc R14: ffffc90000667010 R15: ffff88800bb9af08
[   23.744299][  T345] FS:  00007fedb1460800(0000) GS:ffff8880ae637000(0000) knlGS:0000000000000000
[   23.744840][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.745232][  T345] CR2: 000055b5c2bc2dec CR3: 000000000bab4003 CR4: 0000000000772ef0
[   23.745695][  T345] PKRU: 55555554
[   23.745934][  T345] Call Trace:
[   23.746162][  T345]  <TASK>
[ 23.746320][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.746622][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.746939][ T345] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.747242][ T345] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.747622][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.747935][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.748269][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.748585][ T345] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.749023][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.749281][ T345] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.749709][ T345] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.750073][ T345] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.750386][ T345] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.750696][ T345] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.751090][ T345] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.751397][ T345] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.751714][ T345] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.752044][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.752352][ T345] ? __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) 
[ 23.752657][ T345] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.753044][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.753350][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.753654][ T345] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.753969][ T345] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.754282][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.754600][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.754928][ T345] ? __create_object (mm/kmemleak.c:771) 
[ 23.755236][ T345] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.755543][ T345] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.755855][ T345] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.756240][ T345] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.756553][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.756876][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.757183][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.757494][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.757801][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.758117][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.758425][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.758730][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.759049][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.759366][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.759679][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.760001][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.760313][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.760632][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.760947][ T345] ? 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) 
[ 23.761262][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.761580][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.761901][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.762213][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.762521][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.762836][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.763151][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.763459][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.763768][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.764173][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.764477][ T345] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.764780][ T345] ? __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) 
[ 23.765172][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.765482][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.765793][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.766120][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.766433][ T345] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.766762][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.767090][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.767397][ T345] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.767778][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.768105][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.768418][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.768727][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.769117][  T345] RIP: 0033:0x7fedb162d1e7
[ 23.769433][ T345] 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)
[   23.770536][  T345] RSP: 002b:00007fff8182fa98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.771008][  T345] RAX: ffffffffffffffda RBX: 00007fff818301c0 RCX: 00007fedb162d1e7
[   23.771470][  T345] RDX: 0000000000000000 RSI: 00007fff8182fb00 RDI: 0000000000000005
[   23.771949][  T345] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.772405][  T345] R10: 00000000279e8910 R11: 0000000000000246 R12: 0000000000000004
[   23.772875][  T345] R13: 00000000686e3f25 R14: 0000000000499600 R15: 0000000000000000
| [   24.159305][  T348] ------------[ cut here ]------------
| [ 24.159663][ T348] WARNING: CPU: 0 PID: 348 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) 
| [   24.160480][  T348] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.161863][  T348] Tainted: [W]=WARN
[   24.162098][  T348] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.162487][ T348] 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) 
[ 24.162833][ T348] 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
[   24.163940][  T348] RSP: 0018:ffffc90000537000 EFLAGS: 00010246
[   24.164358][  T348] RAX: 0000000000000000 RBX: ffff88800b5d1000 RCX: 0000000000000001
[   24.164839][  T348] RDX: 0000000000000000 RSI: ffffffff85c9b941 RDI: ffffffff854555e0
[   24.165331][  T348] RBP: ffffc900005370e8 R08: ffff88800b5d1218 R09: 0000000000000000
[   24.165802][  T348] R10: ffffc90000537118 R11: ffffffff86179160 R12: 1ffff920000a6e04
[   24.166278][  T348] R13: 00000000000005b6 R14: ffffc90000537118 R15: ffff88800b5d1218
[   24.166752][  T348] FS:  00007fda749a2800(0000) GS:ffff8880ae4b7000(0000) knlGS:0000000000000000
[   24.167296][  T348] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.167683][  T348] CR2: 0000000000436890 CR3: 000000000bb30002 CR4: 0000000000772ef0
[   24.168170][  T348] PKRU: 55555554
[   24.168402][  T348] Call Trace:
[   24.168632][  T348]  <TASK>
[ 24.168787][ T348] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.169230][ T348] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.169544][ T348] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.169872][ T348] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.170187][ T348] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.170508][ T348] netif_set_mtu (net/core/dev.c:9652) 
[ 24.170817][ T348] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.171149][ T348] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.171462][ T348] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.171734][ T348] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.172062][ T348] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.172377][ T348] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.172698][ T348] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.173093][ T348] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.173435][ T348] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.173763][ T348] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.174156][ T348] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.174470][ T348] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.174800][ T348] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.175120][ T348] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.175453][ T348] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.175755][ T348] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.176111][ T348] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.176426][ T348] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.176737][ T348] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.177062][ T348] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.177365][ T348] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.177705][ T348] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.178031][ T348] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.178346][ T348] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.178687][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.179026][ T348] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.179332][ T348] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.179635][ T348] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.179994][ T348] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.180299][ T348] ? 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) 
[ 24.180626][ T348] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.180967][ T348] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.181279][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.181629][ T348] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.181952][ T348] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.182278][ T348] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.182600][ T348] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.182922][ T348] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.183252][ T348] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.183647][ T348] ___sys_sendmsg (net/socket.c:2670) 
[ 24.183974][ T348] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.184282][ T348] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.184591][ T348] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.184905][ T348] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.185218][ T348] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.185550][ T348] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.185870][ T348] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.186216][ T348] __sys_sendmsg (net/socket.c:2700) 
[ 24.186546][ T348] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.186875][ T348] ? 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) 
[ 24.187193][ T348] ? 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) 
[ 24.187502][ T348] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.187813][ T348] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.188129][ T348] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.188513][  T348] RIP: 0033:0x7fda74b6f1e7
[ 24.188846][ T348] 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)
[   24.189947][  T348] RSP: 002b:00007ffd22d3b698 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.190414][  T348] RAX: ffffffffffffffda RBX: 00007ffd22d3bdc0 RCX: 00007fda74b6f1e7
[   24.190897][  T348] RDX: 0000000000000000 RSI: 00007ffd22d3b700 RDI: 0000000000000005
[   24.191367][  T348] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.191892][  T348] R10: 00007fda74a676f8 R11: 0000000000000246 R12: 00007ffd22d3bde0


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