======================================
| [   19.528924][  T312] ip_gre: GRE over IPv4 tunneling driver
| [   19.583563][  T311] ------------[ cut here ]------------
| [ 19.584011][ T311] WARNING: CPU: 3 PID: 311 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) 
| [   19.584694][  T311] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.585756][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.586184][ T311] 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) 
[ 19.586532][ T311] 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
[   19.587959][  T311] RSP: 0018:ffffc900005d7000 EFLAGS: 00010246
[   19.588425][  T311] RAX: 0000000000000000 RBX: ffff88800bca4000 RCX: 0000000000000001
[   19.588918][  T311] RDX: 0000000000000000 RSI: ffffffffb989b941 RDI: ffffffffb90555e0
[   19.589425][  T311] RBP: ffffc900005d70e8 R08: ffff88800bca4218 R09: 0000000000000000
[   19.589912][  T311] R10: ffffc900005d7118 R11: ffffffffb9d79160 R12: 1ffff920000bae04
[   19.590426][  T311] R13: 00000000000005b6 R14: ffffc900005d7118 R15: ffff88800bca4218
[   19.590913][  T311] FS:  00007f7c09969800(0000) GS:ffff88807aa37000(0000) knlGS:0000000000000000
[   19.591489][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.591899][  T311] CR2: 00007f697e64c000 CR3: 000000000be3a001 CR4: 0000000000772ef0
[   19.592423][  T311] PKRU: 55555554
[   19.592668][  T311] Call Trace:
[   19.592912][  T311]  <TASK>
[ 19.593085][ T311] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.593682][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.594020][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.594356][ T311] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.594691][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.595027][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 19.595363][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.595699][ T311] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.596025][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.596271][ T311] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.596608][ T311] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.596943][ T311] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.597272][ T311] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.597685][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.601571][ T311] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.601897][ T311] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 19.602221][ T311] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.602552][ T311] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.602885][ T311] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.603211][ T311] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.603556][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.603875][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.604206][ T311] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.604548][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.604876][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.605208][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.605543][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.605868][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.606190][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.606526][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.606852][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.607179][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.607740][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.608509][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.608843][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.609162][ T311] ? 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) 
[ 19.609493][ T311] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.610490][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.610811][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.611139][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.611472][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.611796][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.612147][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.612489][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.612810][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.613222][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 19.613566][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.613887][ T311] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.614216][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.615227][ T311] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.615575][ T311] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.615901][ T311] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.616220][ T311] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.616568][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 19.616892][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.617220][ T311] ? 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) 
[ 19.617781][ T311] ? 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) 
[ 19.618108][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.618445][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.618773][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.619178][  T311] RIP: 0033:0x7f7c09b361e7
[ 19.619798][ T311] Code: Unable to access opcode bytes at 0x7f7c09b361bd.

Code starting with the faulting instruction
===========================================
[   19.620219][  T311] RSP: 002b:00007ffefa0d8a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.620730][  T311] RAX: ffffffffffffffda RBX: 00007ffefa0d9170 RCX: 00007f7c09b361e7
[   19.621223][  T311] RDX: 0000000000000000 RSI: 00007ffefa0d8ab0 RDI: 0000000000000005
[   19.621957][  T311] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.622453][  T311] R10: 00007f7c09a2e6f8 R11: 0000000000000246 R12: 00007ffefa0d9190
[   19.622950][  T311] R13: 00000000686e3abb R14: 0000000000499600 R15: 00007ffefa0d8b9c
| [   22.327707][  T338] ------------[ cut here ]------------
| [ 22.328079][ T338] WARNING: CPU: 2 PID: 338 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) 
| [   22.328884][  T338] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.331123][  T338] Tainted: [W]=WARN
[   22.331440][  T338] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.331860][ T338] 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) 
[ 22.332206][ T338] 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
[   22.333363][  T338] RSP: 0018:ffffc90000546ef0 EFLAGS: 00010246
[   22.333838][  T338] RAX: 0000000000000000 RBX: ffff88800bc82000 RCX: 0000000000000001
[   22.334341][  T338] RDX: 0000000000000000 RSI: ffffffffb989b941 RDI: ffffffffb90555e0
[   22.334832][  T338] RBP: ffffc90000546fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.335335][  T338] R10: ffffc90000547010 R11: ffffffffba6a8918 R12: 1ffff920000a8de2
[   22.335832][  T338] R13: 00000000000005dc R14: ffffc90000547010 R15: ffff88800bc82f08
[   22.336335][  T338] FS:  00007fd9c3943800(0000) GS:ffff88807a9b7000(0000) knlGS:0000000000000000
[   22.336906][  T338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.337334][  T338] CR2: 00000000004e5aa8 CR3: 00000000092b0001 CR4: 0000000000772ef0
[   22.337833][  T338] PKRU: 55555554
[   22.338092][  T338] Call Trace:
[   22.338356][  T338]  <TASK>
[ 22.338541][ T338] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.338906][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.339247][ T338] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.339594][ T338] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.340010][ T338] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.340361][ T338] netif_set_mtu (net/core/dev.c:9652) 
[ 22.340704][ T338] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.341049][ T338] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.341518][ T338] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.341778][ T338] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.342226][ T338] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.342618][ T338] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.342958][ T338] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.343311][ T338] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.343780][ T338] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.344120][ T338] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.344463][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.344807][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.345145][ T338] ? __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) 
[ 22.345496][ T338] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.345905][ T338] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.346246][ T338] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.346590][ T338] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.346918][ T338] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.347256][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.347602][ T338] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.347932][ T338] ? __create_object (mm/kmemleak.c:771) 
[ 22.348279][ T338] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.348626][ T338] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.348965][ T338] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.349385][ T338] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.349725][ T338] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.350061][ T338] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.350402][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.350740][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.351079][ T338] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.351418][ T338] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.351754][ T338] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.352086][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.352434][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.352771][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.353105][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.353501][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.353838][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.354183][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.354524][ T338] ? 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) 
[ 22.354860][ T338] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.355195][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.355540][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.355885][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.356223][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.356567][ T338] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.356906][ T338] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.357242][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.357588][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.358012][ T338] ___sys_sendmsg (net/socket.c:2670) 
[ 22.358364][ T338] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.358705][ T338] ? __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) 
[ 22.359120][ T338] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.359469][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.359809][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.360146][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.360491][ T338] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.360832][ T338] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.361171][ T338] __sys_sendmsg (net/socket.c:2700) 
[ 22.361512][ T338] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.361923][ T338] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.362267][ T338] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.362612][ T338] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.362945][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.363367][  T338] RIP: 0033:0x7fd9c3b101e7
[ 22.363756][ T338] 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)
[   22.364924][  T338] RSP: 002b:00007fff118fdaa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.365431][  T338] RAX: ffffffffffffffda RBX: 00007fff118fe1d0 RCX: 00007fd9c3b101e7
[   22.365940][  T338] RDX: 0000000000000000 RSI: 00007fff118fdb10 RDI: 0000000000000005
[   22.366475][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.366969][  T338] R10: 00000000317cc910 R11: 0000000000000246 R12: 0000000000000004
[   22.367472][  T338] R13: 00000000686e3abe R14: 0000000000499600 R15: 0000000000000000
| [   22.604105][  T341] ------------[ cut here ]------------
| [ 22.605432][ T341] WARNING: CPU: 3 PID: 341 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) 
| [   22.606087][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.607525][  T341] Tainted: [W]=WARN
[   22.607768][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.608170][ T341] 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) 
[ 22.608512][ T341] 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
[   22.609658][  T341] RSP: 0018:ffffc90000596ef0 EFLAGS: 00010246
[   22.610062][  T341] RAX: 0000000000000000 RBX: ffff88800bc82000 RCX: 0000000000000001
[   22.610553][  T341] RDX: 0000000000000000 RSI: ffffffffb989b941 RDI: ffffffffb90555e0
[   22.611031][  T341] RBP: ffffc90000596fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.611516][  T341] R10: ffffc90000597010 R11: ffffffffba6a8918 R12: 1ffff920000b2de2
[   22.611992][  T341] R13: 00000000000005dc R14: ffffc90000597010 R15: ffff88800bc82f08
[   22.612485][  T341] FS:  00007f5c821e2800(0000) GS:ffff88807aa37000(0000) knlGS:0000000000000000
[   22.613044][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.613480][  T341] CR2: 00000000004e5ab0 CR3: 000000000c033004 CR4: 0000000000772ef0
[   22.613963][  T341] PKRU: 55555554
[   22.614201][  T341] Call Trace:
[   22.614450][  T341]  <TASK>
[ 22.614618][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.614942][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.615267][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.615597][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.615995][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.616327][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 22.616648][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.616977][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.617442][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.617688][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.618127][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.618501][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.618826][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.619151][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.619577][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.619895][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.620213][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.620548][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.620870][ T341] ? __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) 
[ 22.621190][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.621596][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.621923][ T341] ? irqentry_exit (kernel/entry/common.c:311) 
[ 22.622241][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.622583][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3900) 
[ 22.622903][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.623228][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.623577][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.623897][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.624221][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.624564][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.624882][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.625205][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.625536][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.625856][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.626177][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.626510][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.626828][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.627152][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.627491][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.627809][ T341] ? 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) 
[ 22.628134][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.628470][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.628792][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.629116][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.629451][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.629771][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.630096][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.630428][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.630745][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.631154][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 22.631482][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.631808][ T341] ? __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) 
[ 22.632213][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.632555][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.632878][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.633205][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.633546][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.633866][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.634196][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 22.634524][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.634921][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.635252][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.635585][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.635909][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.636321][  T341] RIP: 0033:0x7f5c823af1e7
[ 22.636656][ T341] 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)
[   22.637804][  T341] RSP: 002b:00007ffe1fd97cd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.638302][  T341] RAX: ffffffffffffffda RBX: 00007ffe1fd98400 RCX: 00007f5c823af1e7
[   22.638786][  T341] RDX: 0000000000000000 RSI: 00007ffe1fd97d40 RDI: 0000000000000005
[   22.639261][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.639750][  T341] R10: 00000000196ad910 R11: 0000000000000246 R12: 0000000000000004
[   22.640227][  T341] R13: 00000000686e3abe R14: 0000000000499600 R15: 0000000000000000
| [   23.024858][  T344] ------------[ cut here ]------------
| [ 23.025270][ 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) 
| [   23.025928][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.027562][  T344] Tainted: [W]=WARN
[   23.027809][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.028215][ 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) 
[ 23.028556][ T344] 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
[   23.029710][  T344] RSP: 0018:ffffc900005e7000 EFLAGS: 00010246
[   23.030117][  T344] RAX: 0000000000000000 RBX: ffff8880026b1000 RCX: 0000000000000001
[   23.030602][  T344] RDX: 0000000000000000 RSI: ffffffffb989b941 RDI: ffffffffb90555e0
[   23.031083][  T344] RBP: ffffc900005e70e8 R08: ffff8880026b1218 R09: 0000000000000000
[   23.031565][  T344] R10: ffffc900005e7118 R11: ffffffffb9d79160 R12: 1ffff920000bce04
[   23.032051][  T344] R13: 00000000000005b6 R14: ffffc900005e7118 R15: ffff8880026b1218
[   23.032562][  T344] FS:  00007fa85324a800(0000) GS:ffff88807aa37000(0000) knlGS:0000000000000000
[   23.033126][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.033552][  T344] CR2: 0000000000436890 CR3: 000000000909c002 CR4: 0000000000772ef0
[   23.034030][  T344] PKRU: 55555554
[   23.034270][  T344] Call Trace:
[   23.034521][  T344]  <TASK>
[ 23.034685][ T344] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.035082][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.035407][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.035731][ T344] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.036050][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.036383][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.036704][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.037039][ T344] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.037372][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.037616][ T344] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.037935][ T344] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.038262][ T344] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.038598][ T344] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.038996][ T344] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.039342][ T344] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.039665][ T344] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.039990][ T344] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.040317][ T344] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.040636][ T344] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.040957][ T344] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.041287][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.041621][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.041947][ T344] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.042276][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.042618][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.042952][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.043269][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.043615][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.043940][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.044267][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.044620][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.044946][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.045267][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.045597][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.045930][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.046245][ 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) 
[ 23.046583][ T344] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.046913][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.047232][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.047563][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.047889][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.048213][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.048549][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.048878][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.049196][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.049617][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.049938][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.050267][ T344] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.050603][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.050921][ T344] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.051254][ T344] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.051587][ T344] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.051907][ T344] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.052246][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.052580][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.052899][ T344] ? 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) 
[ 23.053236][ T344] ? 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) 
[ 23.053585][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.053908][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.054227][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.054629][  T344] RIP: 0033:0x7fa8534171e7
[ 23.054957][ 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)
[   23.056114][  T344] RSP: 002b:00007ffd62f058e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.056606][  T344] RAX: ffffffffffffffda RBX: 00007ffd62f06010 RCX: 00007fa8534171e7
[   23.057098][  T344] RDX: 0000000000000000 RSI: 00007ffd62f05950 RDI: 0000000000000005
[   23.057585][  T344] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.058071][  T344] R10: 00007fa85330f6f8 R11: 0000000000000246 R12: 00007ffd62f06030


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