======================================
| [   19.600349][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   19.662112][  T313] ------------[ cut here ]------------
| [ 19.662578][ T313] WARNING: CPU: 2 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.663374][  T313] Modules linked in: ip_gre gre vrf veth
[   19.664517][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.664917][ T313] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.665266][ T313] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.666383][  T313] RSP: 0018:ffffc90000587000 EFLAGS: 00010246
[   19.666804][  T313] RAX: 0000000000000000 RBX: ffff88800bd74000 RCX: 0000000000000001
[   19.667288][  T313] RDX: 0000000000000000 RSI: ffffffff8649b939 RDI: ffffffff85c555e0
[   19.667764][  T313] RBP: ffffc900005870e8 R08: ffff88800bd74218 R09: 0000000000000000
[   19.668246][  T313] R10: ffffc90000587118 R11: ffffffff86979160 R12: 1ffff920000b0e04
[   19.668722][  T313] R13: 00000000000005b6 R14: ffffc90000587118 R15: ffff88800bd74218
[   19.669211][  T313] FS:  00007f68a003a800(0000) GS:ffff8880a6fb7000(0000) knlGS:0000000000000000
[   19.669863][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.670278][  T313] CR2: 00005602fb4939a0 CR3: 000000000c50f001 CR4: 0000000000772ef0
[   19.670761][  T313] PKRU: 55555554
[   19.671008][  T313] Call Trace:
[   19.671271][  T313]  <TASK>
[ 19.671447][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.672006][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.672347][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.672675][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.673003][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.673355][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 19.673684][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.674020][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.674353][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.674597][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.674919][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.675255][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.675584][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.675977][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.676315][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.676656][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 19.676982][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.677307][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.677627][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.677946][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.678750][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.679071][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.679406][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.679748][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.680077][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.680416][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.680739][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.681058][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.681387][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.681709][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.682032][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.682370][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.682692][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.683014][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.683369][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.683689][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.684010][ T313] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.684343][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.684667][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.684991][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.685326][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.685648][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.685989][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.686319][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.686637][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.687051][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 19.687381][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.687701][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.688025][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.688352][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.688680][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.689005][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.689334][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.689676][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 19.689997][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.690325][ T313] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 19.690657][ T313] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 19.690980][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.691315][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.691636][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.692026][  T313] RIP: 0033:0x7f68a02071e7
[ 19.692385][ T313] Code: Unable to access opcode bytes at 0x7f68a02071bd.

Code starting with the faulting instruction
===========================================
[   19.692801][  T313] RSP: 002b:00007ffec2780d78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.693298][  T313] RAX: ffffffffffffffda RBX: 00007ffec27814a0 RCX: 00007f68a02071e7
[   19.693779][  T313] RDX: 0000000000000000 RSI: 00007ffec2780de0 RDI: 0000000000000005
[   19.706333][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.706820][  T313] R10: 00007f68a00ff6f8 R11: 0000000000000246 R12: 00007ffec27814c0
[   19.707542][  T313] R13: 00000000686e71c6 R14: 0000000000499600 R15: 00007ffec2780ecc
| [   22.446045][  T340] ------------[ cut here ]------------
| [ 22.446400][ T340] WARNING: CPU: 0 PID: 340 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) 
| [   22.447141][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall sch_ingress ip_gre gre vrf veth
| [   22.448533][  T340] Tainted: [W]=WARN
[   22.448774][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.449165][ T340] 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) 
[ 22.449489][ T340] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.450591][  T340] RSP: 0018:ffffc900005e6ef0 EFLAGS: 00010246
[   22.450978][  T340] RAX: 0000000000000000 RBX: ffff88800c34a000 RCX: 0000000000000001
[   22.451707][  T340] RDX: 0000000000000000 RSI: ffffffff8649b939 RDI: ffffffff85c555e0
[   22.452315][  T340] RBP: ffffc900005e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.452769][  T340] R10: ffffc900005e7010 R11: ffffffff872a8918 R12: 1ffff920000bcde2
[   22.453443][  T340] R13: 00000000000005dc R14: ffffc900005e7010 R15: ffff88800c34af08
[   22.453908][  T340] FS:  00007fdd61aad800(0000) GS:ffff8880a6eb7000(0000) knlGS:0000000000000000
[   22.454623][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.455007][  T340] CR2: 00000000004e5aa8 CR3: 000000000ebd6002 CR4: 0000000000772ef0
[   22.455500][  T340] PKRU: 55555554
[   22.455730][  T340] Call Trace:
[   22.455957][  T340]  <TASK>
[ 22.456119][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.456440][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.456750][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.457055][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.457448][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.457755][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 22.458059][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.458393][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.458814][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.459044][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.459473][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.459818][ T340] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.460139][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.460451][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.460843][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.461157][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.461464][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.461770][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.462078][ T340] ? __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) 
[ 22.462391][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.462775][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.463079][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.463410][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.463716][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.464021][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.464336][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.464639][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 22.464944][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.465262][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.465568][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.465946][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.466268][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.466580][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.466885][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.467214][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.467524][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.467835][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.468152][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.468457][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.468766][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.469075][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.469394][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.469701][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.470014][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.470339][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.470645][ T340] ? 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) 
[ 22.470956][ T340] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.471280][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.471587][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.471897][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.472220][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.472525][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.472836][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.473165][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.473468][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.473859][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 22.474171][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.474483][ T340] ? __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) 
[ 22.474864][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.475191][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.475500][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.475814][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.476118][ T340] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.476430][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.476744][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 22.477053][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.477439][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.477758][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.478066][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.478381][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.478763][  T340] RIP: 0033:0x7fdd61c7a1e7
[ 22.479080][ T340] 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)
[   22.480195][  T340] RSP: 002b:00007fff86612d48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.480656][  T340] RAX: ffffffffffffffda RBX: 00007fff86613470 RCX: 00007fdd61c7a1e7
[   22.481113][  T340] RDX: 0000000000000000 RSI: 00007fff86612db0 RDI: 0000000000000005
[   22.481583][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.482039][  T340] R10: 00000000140b8910 R11: 0000000000000246 R12: 0000000000000004
[   22.482508][  T340] R13: 00000000686e71c9 R14: 0000000000499600 R15: 0000000000000000
| [   22.722867][  T343] ------------[ cut here ]------------
| [ 22.723204][ 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) 
| [   22.723822][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall sch_ingress ip_gre gre vrf veth
| [   22.725219][  T343] Tainted: [W]=WARN
[   22.725461][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.725840][ 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) 
[ 22.726164][ T343] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.727261][  T343] RSP: 0018:ffffc90000566ef0 EFLAGS: 00010246
[   22.727645][  T343] RAX: 0000000000000000 RBX: ffff88800c34a000 RCX: 0000000000000001
[   22.728099][  T343] RDX: 0000000000000000 RSI: ffffffff8649b939 RDI: ffffffff85c555e0
[   22.728567][  T343] RBP: ffffc90000566fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.729024][  T343] R10: ffffc90000567010 R11: ffffffff872a8918 R12: 1ffff920000acde2
[   22.729495][  T343] R13: 00000000000005dc R14: ffffc90000567010 R15: ffff88800c34af08
[   22.729957][  T343] FS:  00007f3f830fc800(0000) GS:ffff8880a6f37000(0000) knlGS:0000000000000000
[   22.730657][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.731042][  T343] CR2: 00000000004e5ab0 CR3: 000000000a7fd003 CR4: 0000000000772ef0
[   22.731579][  T343] PKRU: 55555554
[   22.731811][  T343] Call Trace:
[   22.732038][  T343]  <TASK>
[ 22.732212][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.732521][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.732843][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.733189][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.733583][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.733891][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 22.734216][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.734534][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.734956][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.735201][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.735615][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.735961][ T343] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.736281][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.736591][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.736974][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.737300][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.737611][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.737942][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.738287][ 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) 
[ 22.738594][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.738979][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.739297][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.739607][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.739918][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.740231][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.740558][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.740864][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 22.741194][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.741510][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.741813][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.742235][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.742557][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.742866][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.743210][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.743537][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.743842][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.744155][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.744471][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.744791][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.745105][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.745442][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.745770][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.746074][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.746401][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.746718][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.747031][ 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) 
[ 22.747347][ T343] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.747657][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.747979][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.748310][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.748632][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.748938][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.749277][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.749596][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.749898][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.750299][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 22.750602][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.750917][ 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) 
[ 22.751313][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.751628][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.751945][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.752272][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.752584][ 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) 
[ 22.752895][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.753254][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 22.753565][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.753944][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.754278][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.754585][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.754889][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.755274][  T343] RIP: 0033:0x7f3f832c91e7
[ 22.755601][ 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)
[   22.756716][  T343] RSP: 002b:00007ffe4b61aa58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.757201][  T343] RAX: ffffffffffffffda RBX: 00007ffe4b61b180 RCX: 00007f3f832c91e7
[   22.757673][  T343] RDX: 0000000000000000 RSI: 00007ffe4b61aac0 RDI: 0000000000000005
[   22.758141][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.758603][  T343] R10: 0000000033b45910 R11: 0000000000000246 R12: 0000000000000004
[   22.759068][  T343] R13: 00000000686e71c9 R14: 0000000000499600 R15: 0000000000000000
| [   25.091835][  T365] ------------[ cut here ]------------
| [ 25.092322][ T365] WARNING: CPU: 3 PID: 365 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) 
| [   25.092952][  T365] Modules linked in: dummy bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall sch_ingress ip_gre gre vrf veth
| [   25.094448][  T365] Tainted: [W]=WARN
[   25.094694][  T365] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.095090][ T365] 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) 
[ 25.095435][ T365] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   25.096590][  T365] RSP: 0018:ffffc90000607000 EFLAGS: 00010246
[   25.096990][  T365] RAX: 0000000000000000 RBX: ffff888007d39000 RCX: 0000000000000001
[   25.097476][  T365] RDX: 0000000000000000 RSI: ffffffff8649b939 RDI: ffffffff85c555e0
[   25.097955][  T365] RBP: ffffc900006070e8 R08: ffff888007d39218 R09: 0000000000000000
[   25.098445][  T365] R10: ffffc90000607118 R11: ffff888002ab15e0 R12: 1ffff920000c0e04
[   25.098929][  T365] R13: 00000000000005b6 R14: ffffc90000607118 R15: ffff888007d39218
[   25.099420][  T365] FS:  00007f5903c08800(0000) GS:ffff8880a7037000(0000) knlGS:0000000000000000
[   25.099985][  T365] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.100400][  T365] CR2: 00000000004e6170 CR3: 000000000abad003 CR4: 0000000000772ef0
[   25.100877][  T365] PKRU: 55555554
[   25.101115][  T365] Call Trace:
[   25.101362][  T365]  <TASK>
[ 25.101525][ T365] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 25.101930][ T365] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.102260][ T365] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.102589][ T365] netif_set_mtu (net/core/dev.c:9652) 
[ 25.102909][ T365] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.103256][ T365] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 25.103577][ T365] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.103819][ T365] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 25.104146][ T365] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 25.104477][ T365] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 25.104801][ T365] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 25.105207][ T365] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 25.105534][ T365] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 25.105855][ T365] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 25.106188][ T365] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 25.106511][ T365] ? __dev_get_by_name (net/core/dev.c:865) 
[ 25.106828][ T365] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.107154][ T365] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.107480][ T365] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.107795][ T365] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.108117][ T365] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 25.108459][ T365] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.108791][ T365] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.109125][ T365] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.109450][ T365] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.109772][ T365] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.110089][ T365] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.110415][ T365] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.110736][ T365] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.111059][ T365] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.111383][ T365] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.111708][ T365] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.112037][ T365] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.112381][ T365] ? 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) 
[ 25.112701][ T365] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.113019][ T365] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.113359][ T365] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.113681][ T365] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.114010][ T365] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.114343][ T365] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.114670][ T365] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.114991][ T365] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.115318][ T365] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.115725][ T365] ___sys_sendmsg (net/socket.c:2670) 
[ 25.116037][ T365] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 25.116367][ T365] ? __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) 
[ 25.116761][ T365] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.117084][ T365] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.117420][ T365] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.117747][ T365] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.118062][ T365] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 25.118386][ T365] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.118717][ T365] __sys_sendmsg (net/socket.c:2700) 
[ 25.119030][ T365] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 25.119432][ T365] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.119765][ T365] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.120084][ T365] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.120414][ T365] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.120808][  T365] RIP: 0033:0x7f5903dd51e7
[ 25.121151][ T365] 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)
[   25.122290][  T365] RSP: 002b:00007fff5a06da78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.122769][  T365] RAX: ffffffffffffffda RBX: 00007fff5a06e1a0 RCX: 00007f5903dd51e7
[   25.123271][  T365] RDX: 0000000000000000 RSI: 00007fff5a06dae0 RDI: 0000000000000005
[   25.123749][  T365] RBP: 000000000000000a R08: 00000000000000b4 R09: 0000000000000078
[   25.124234][  T365] R10: 00007f5903cd2ee8 R11: 0000000000000246 R12: 00007fff5a06e1c0


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