======================================
| [   19.808702][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   19.872392][  T313] ------------[ cut here ]------------
| [ 19.872913][ T313] WARNING: CPU: 0 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.873551][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.874643][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.875052][ 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) 
[ 19.875404][ T313] 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
[   19.876781][  T313] RSP: 0018:ffffc900006f7000 EFLAGS: 00010246
[   19.877208][  T313] RAX: 0000000000000000 RBX: ffff88800b941000 RCX: 0000000000000001
[   19.877703][  T313] RDX: 0000000000000000 RSI: ffffffffb829b941 RDI: ffffffffb7a555e0
[   19.878200][  T313] RBP: ffffc900006f70e8 R08: ffff88800b941218 R09: 0000000000000000
[   19.878689][  T313] R10: ffffc900006f7118 R11: ffffffffb8779160 R12: 1ffff920000dee04
[   19.879207][  T313] R13: 00000000000005b6 R14: ffffc900006f7118 R15: ffff88800b941218
[   19.879702][  T313] FS:  00007f907c063800(0000) GS:ffff88807beb7000(0000) knlGS:0000000000000000
[   19.880290][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.880701][  T313] CR2: 0000000000436890 CR3: 0000000002824001 CR4: 0000000000772ef0
[   19.881196][  T313] PKRU: 55555554
[   19.881442][  T313] Call Trace:
[   19.881690][  T313]  <TASK>
[ 19.881859][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.882284][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.882627][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.882960][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.883309][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.883648][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 19.883973][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.884322][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.884652][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.884898][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.885232][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.888488][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.888860][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.889271][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.889613][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.889939][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 19.890276][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.890597][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.890921][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.891257][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.895594][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.895945][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.896284][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.896618][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.896944][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.897286][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.897612][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.897946][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.898278][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.898609][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.898940][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.899272][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.899608][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.899931][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.900275][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.900600][ 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) 
[ 19.900931][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.901267][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.901589][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.901922][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.902260][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.902583][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.902922][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.903358][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.903667][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.904058][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 19.904832][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.905176][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.905510][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.905846][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.906196][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.906745][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.907065][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.907411][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 19.907736][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.908057][ 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) 
[ 19.908624][ 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) 
[ 19.908949][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.909509][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.909834][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.910245][  T313] RIP: 0033:0x7f907c2301e7
[ 19.910595][ T313] Code: Unable to access opcode bytes at 0x7f907c2301bd.

Code starting with the faulting instruction
===========================================
[   19.911018][  T313] RSP: 002b:00007ffe653a92d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.911521][  T313] RAX: ffffffffffffffda RBX: 00007ffe653a9a00 RCX: 00007f907c2301e7
[   19.912005][  T313] RDX: 0000000000000000 RSI: 00007ffe653a9340 RDI: 0000000000000005
[   19.912499][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.912991][  T313] R10: 00007f907c1286f8 R11: 0000000000000246 R12: 00007ffe653a9a20
[   19.913965][  T313] R13: 00000000686e1df2 R14: 0000000000499600 R15: 00007ffe653a942c
| [   22.880282][  T340] ------------[ cut here ]------------
| [ 22.880602][ T340] WARNING: CPU: 1 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) 
| [   22.881226][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.882676][  T340] Tainted: [W]=WARN
[   22.882921][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.883415][ 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) 
[ 22.883734][ T340] 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
[   22.884831][  T340] RSP: 0018:ffffc90000b76ef0 EFLAGS: 00010246
[   22.885228][  T340] RAX: 0000000000000000 RBX: ffff88800afea000 RCX: 0000000000000001
[   22.885696][  T340] RDX: 0000000000000000 RSI: ffffffffb829b941 RDI: ffffffffb7a555e0
[   22.886172][  T340] RBP: ffffc90000b76fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.886637][  T340] R10: ffffc90000b77010 R11: ffffffffb90a8918 R12: 1ffff9200016ede2
[   22.887096][  T340] R13: 00000000000005dc R14: ffffc90000b77010 R15: ffff88800afeaf08
[   22.887562][  T340] FS:  00007f130fd6b800(0000) GS:ffff88807bf37000(0000) knlGS:0000000000000000
[   22.888098][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.888699][  T340] CR2: 00000000004e5aa8 CR3: 000000000c180006 CR4: 0000000000772ef0
[   22.889185][  T340] PKRU: 55555554
[   22.889419][  T340] Call Trace:
[   22.889646][  T340]  <TASK>
[ 22.889804][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.890146][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.890457][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.890761][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.891157][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.891471][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 22.891774][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.892089][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.892531][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.892760][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.893192][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.893556][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.893869][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.894191][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.894580][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.894890][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.895226][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.895539][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.895884][ 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) 
[ 22.896202][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.896589][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.896897][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.897215][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.897527][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.897833][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.898171][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.898478][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 22.898788][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.899093][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.899413][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.899791][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.900102][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.900538][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.900956][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.901301][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.901611][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.901913][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.902227][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.902534][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.902841][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.903159][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.903480][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.903787][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.904095][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.904425][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.904727][ 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) 
[ 22.905036][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.905357][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.905679][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.905994][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.906342][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.906662][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.906975][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.907292][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.907599][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.907996][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 22.908304][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.908611][ 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) 
[ 22.908992][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.909310][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.909622][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.909931][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.910251][ 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) 
[ 22.910566][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.910878][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 22.911187][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.911571][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.911888][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.912207][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.912525][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.912903][  T340] RIP: 0033:0x7f130ff381e7
[ 22.913229][ 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)
[   22.914327][  T340] RSP: 002b:00007ffdaa72ff58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.914798][  T340] RAX: ffffffffffffffda RBX: 00007ffdaa730680 RCX: 00007f130ff381e7
[   22.915264][  T340] RDX: 0000000000000000 RSI: 00007ffdaa72ffc0 RDI: 0000000000000005
[   22.915785][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.916253][  T340] R10: 000000001ae44910 R11: 0000000000000246 R12: 0000000000000004
[   22.916717][  T340] R13: 00000000686e1df5 R14: 0000000000499600 R15: 0000000000000000
| [   23.177686][  T343] ------------[ cut here ]------------
| [ 23.179106][ T343] WARNING: CPU: 3 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) 
| [   23.180066][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.182294][  T343] Tainted: [W]=WARN
[   23.182657][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.183279][ 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) 
[ 23.183767][ 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
[   23.185487][  T343] RSP: 0018:ffffc90000506ef0 EFLAGS: 00010246
[   23.186136][  T343] RAX: 0000000000000000 RBX: ffff88800afea000 RCX: 0000000000000001
[   23.186894][  T343] RDX: 0000000000000000 RSI: ffffffffb829b941 RDI: ffffffffb7a555e0
[   23.187638][  T343] RBP: ffffc90000506fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.188388][  T343] R10: ffffc90000507010 R11: ffffffffb90a8918 R12: 1ffff920000a0de2
[   23.189081][  T343] R13: 00000000000005dc R14: ffffc90000507010 R15: ffff88800afeaf08
[   23.189817][  T343] FS:  00007f53cb436800(0000) GS:ffff88807c037000(0000) knlGS:0000000000000000
[   23.190690][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.191311][  T343] CR2: 00000000004e5ab0 CR3: 000000000c180003 CR4: 0000000000772ef0
[   23.192055][  T343] PKRU: 55555554
[   23.192428][  T343] Call Trace:
[   23.192777][  T343]  <TASK>
[ 23.193027][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.193534][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.194043][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.194546][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.195177][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.195675][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.196176][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.196665][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.197349][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.197714][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.198382][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.198948][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.199455][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.199924][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.200538][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.200998][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.201474][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.201932][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.202400][ 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) 
[ 23.202907][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.203604][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.204157][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.204726][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.205295][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.205868][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.206424][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.206950][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.207530][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.208017][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.208402][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.208813][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.209160][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.209651][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.210147][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.210639][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.211115][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.211621][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.212112][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.212599][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.213091][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.213606][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.214083][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.214588][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.215093][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.215592][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.216077][ 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) 
[ 23.216551][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.217038][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.217519][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.218015][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.218498][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.218984][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.219509][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.220017][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.220504][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.221117][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.221631][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.222105][ 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) 
[ 23.222694][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.223228][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.223710][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.224222][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.224719][ 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) 
[ 23.225238][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.225751][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.226222][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.226836][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.227362][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.227835][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.228335][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.228944][  T343] RIP: 0033:0x7f53cb6031e7
[ 23.229552][ 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)
[   23.231280][  T343] RSP: 002b:00007ffc075e8ba8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.231999][  T343] RAX: ffffffffffffffda RBX: 00007ffc075e92d0 RCX: 00007f53cb6031e7
[   23.232703][  T343] RDX: 0000000000000000 RSI: 00007ffc075e8c10 RDI: 0000000000000005
[   23.233427][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.234150][  T343] R10: 0000000020c31910 R11: 0000000000000246 R12: 0000000000000004
[   23.234859][  T343] R13: 00000000686e1df5 R14: 0000000000499600 R15: 0000000000000000
| [   23.662287][  T346] ------------[ cut here ]------------
| [ 23.662704][ T346] WARNING: CPU: 0 PID: 346 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) 
| [   23.663328][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.664664][  T346] Tainted: [W]=WARN
[   23.664901][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.665287][ T346] 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) 
[ 23.665599][ T346] 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
[   23.666723][  T346] RSP: 0018:ffffc900006e7000 EFLAGS: 00010246
[   23.667117][  T346] RAX: 0000000000000000 RBX: ffff888017771000 RCX: 0000000000000001
[   23.667576][  T346] RDX: 0000000000000000 RSI: ffffffffb829b941 RDI: ffffffffb7a555e0
[   23.668031][  T346] RBP: ffffc900006e70e8 R08: ffff888017771218 R09: 0000000000000000
[   23.668487][  T346] R10: ffffc900006e7118 R11: ffffffffb8779160 R12: 1ffff920000dce04
[   23.668945][  T346] R13: 00000000000005b6 R14: ffffc900006e7118 R15: ffff888017771218
[   23.669404][  T346] FS:  00007f596119d800(0000) GS:ffff88807beb7000(0000) knlGS:0000000000000000
[   23.669934][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.670322][  T346] CR2: 0000000000436890 CR3: 000000000585a005 CR4: 0000000000772ef0
[   23.670774][  T346] PKRU: 55555554
[   23.671006][  T346] Call Trace:
[   23.671240][  T346]  <TASK>
[ 23.671394][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.671774][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.672083][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.672493][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.672800][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.673109][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.673453][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.673768][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.674077][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.674429][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.674758][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.675068][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.675386][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.675787][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.676101][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.676426][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.676734][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.677034][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.677345][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.677651][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.677963][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.678273][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.678582][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.678893][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.679208][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.679524][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.679822][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.680143][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.680584][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.680890][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.681210][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.681521][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.681826][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.682139][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.682456][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.682759][ T346] ? 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) 
[ 23.683062][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.683374][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.683674][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.683982][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.684295][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.684601][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.684911][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.685226][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.685527][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.685927][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.686239][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.686550][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.686855][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.687174][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.687481][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.687784][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.688083][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.688417][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.688718][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.689018][ T346] ? 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) 
[ 23.689338][ T346] ? 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) 
[ 23.689644][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.689948][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.690264][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.690640][  T346] RIP: 0033:0x7f596136a1e7
[ 23.690951][ T346] 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)
[   23.692037][  T346] RSP: 002b:00007ffc61f56ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.692509][  T346] RAX: ffffffffffffffda RBX: 00007ffc61f57210 RCX: 00007f596136a1e7
[   23.692961][  T346] RDX: 0000000000000000 RSI: 00007ffc61f56b50 RDI: 0000000000000005
[   23.693427][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.693881][  T346] R10: 00007f59612626f8 R11: 0000000000000246 R12: 00007ffc61f57230


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