======================================
| [   20.041817][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.107557][  T312] ------------[ cut here ]------------
| [ 20.108109][ T312] WARNING: CPU: 2 PID: 312 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.108854][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.110082][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.110545][ T312] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.110938][ T312] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.112203][  T312] RSP: 0018:ffffc90000567000 EFLAGS: 00010246
[   20.112685][  T312] RAX: 0000000000000000 RBX: ffff8880052f9000 RCX: 0000000000000001
[   20.113238][  T312] RDX: 0000000000000000 RSI: ffffffff8829b941 RDI: ffffffff87a555e0
[   20.113775][  T312] RBP: ffffc900005670e8 R08: ffff8880052f9218 R09: 0000000000000000
[   20.114553][  T312] R10: ffffc90000567118 R11: ffffffff88779160 R12: 1ffff920000ace04
[   20.115367][  T312] R13: 00000000000005b6 R14: ffffc90000567118 R15: ffff8880052f9218
[   20.115936][  T312] FS:  00007f21b81a7800(0000) GS:ffff8880abfb7000(0000) knlGS:0000000000000000
[   20.116560][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.117032][  T312] CR2: 00007f320db70198 CR3: 000000000b569005 CR4: 0000000000772ef0
[   20.117570][  T312] PKRU: 55555554
[   20.119898][  T312] Call Trace:
[   20.120185][  T312]  <TASK>
[ 20.120382][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.120848][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.121218][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.121582][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.121973][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.122343][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.122710][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.123098][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.123465][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.123742][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.124120][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.124510][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.124892][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.125562][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.125943][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.126318][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.126686][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.127054][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.127426][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.127815][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.128185][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.128566][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.129181][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.129558][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.129942][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.130536][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.130913][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.131280][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.131637][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.132011][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.132375][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.132745][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.133124][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.133509][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.133903][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.134262][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.134622][ T312] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.134996][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.135354][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.135719][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.136319][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.136710][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.137095][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.137465][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.137836][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.138321][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.138700][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.139076][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.140155][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.140534][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.140916][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.141294][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.141660][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.142076][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.142459][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.142833][ T312] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.143233][ T312] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.143601][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.143979][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.144351][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.144819][  T312] RIP: 0033:0x7f21b83741e7
[ 20.145232][ T312] Code: Unable to access opcode bytes at 0x7f21b83741bd.

Code starting with the faulting instruction
===========================================
[   20.145692][  T312] RSP: 002b:00007ffff02a1eb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.146472][  T312] RAX: ffffffffffffffda RBX: 00007ffff02a25e0 RCX: 00007f21b83741e7
[   20.147019][  T312] RDX: 0000000000000000 RSI: 00007ffff02a1f20 RDI: 0000000000000005
[   20.147803][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.148359][  T312] R10: 00007f21b826c6f8 R11: 0000000000000246 R12: 00007ffff02a2600
[   20.148920][  T312] R13: 00000000686e4a75 R14: 0000000000499600 R15: 00007ffff02a200c
| [   23.153400][  T340] ------------[ cut here ]------------
| [ 23.153735][ 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) 
| [   23.154370][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.157074][  T340] Tainted: [W]=WARN
[   23.157347][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.157754][ 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) 
[ 23.158087][ 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
[   23.159257][  T340] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   23.159687][  T340] RAX: 0000000000000000 RBX: ffff88800da12000 RCX: 0000000000000001
[   23.160163][  T340] RDX: 0000000000000000 RSI: ffffffff8829b941 RDI: ffffffff87a555e0
[   23.160627][  T340] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.161093][  T340] R10: ffffc90000557010 R11: ffffffff890a8918 R12: 1ffff920000aade2
[   23.161560][  T340] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff88800da12f08
[   23.162054][  T340] FS:  00007fa6d442e800(0000) GS:ffff8880abeb7000(0000) knlGS:0000000000000000
[   23.162625][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.163047][  T340] CR2: 00000000004e5aa8 CR3: 000000000572b004 CR4: 0000000000772ef0
[   23.163546][  T340] PKRU: 55555554
[   23.163779][  T340] Call Trace:
[   23.164021][  T340]  <TASK>
[ 23.164209][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.164599][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.164923][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.165230][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.165966][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.166278][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.166652][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.167026][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.167457][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.167693][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.168117][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.168480][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.168813][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.169135][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.169521][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.169838][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.170149][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.170460][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.170832][ 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) 
[ 23.171157][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.171542][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.171864][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.172180][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.172489][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.172822][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.173137][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.173444][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.173763][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.174092][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.174401][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.174838][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.175164][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.175488][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.175813][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.176140][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.176457][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.176762][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.177085][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.177400][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.177706][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.178030][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.178356][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.178708][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.179043][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.179366][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.179670][ 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) 
[ 23.179996][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.180312][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.180645][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.180979][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.181291][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.181599][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.181923][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.182239][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.182566][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.182994][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.183311][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.183621][ 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) 
[ 23.184023][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.184360][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.184673][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.184993][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.185300][ 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) 
[ 23.185691][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.186057][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.186405][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.186934][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.187320][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.187696][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.188058][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.188535][  T340] RIP: 0033:0x7fa6d45fb1e7
[ 23.188877][ 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)
[   23.190065][  T340] RSP: 002b:00007ffea88e9ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.190578][  T340] RAX: ffffffffffffffda RBX: 00007ffea88ea610 RCX: 00007fa6d45fb1e7
[   23.191076][  T340] RDX: 0000000000000000 RSI: 00007ffea88e9f50 RDI: 0000000000000005
[   23.191575][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.192143][  T340] R10: 0000000028d7e910 R11: 0000000000000246 R12: 0000000000000004
[   23.192615][  T340] R13: 00000000686e4a78 R14: 0000000000499600 R15: 0000000000000000
| [   23.477039][  T342] ------------[ cut here ]------------
| [ 23.477495][ T342] WARNING: CPU: 3 PID: 342 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) 
| [   23.478247][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.480117][  T342] Tainted: [W]=WARN
[   23.480354][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.480750][ T342] 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) 
[ 23.481086][ T342] 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
[   23.482212][  T342] RSP: 0018:ffffc900005e6ef0 EFLAGS: 00010246
[   23.482615][  T342] RAX: 0000000000000000 RBX: ffff88800da12000 RCX: 0000000000000001
[   23.483092][  T342] RDX: 0000000000000000 RSI: ffffffff8829b941 RDI: ffffffff87a555e0
[   23.483554][  T342] RBP: ffffc900005e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.484025][  T342] R10: ffffc900005e7010 R11: ffffffff890a8918 R12: 1ffff920000bcde2
[   23.484488][  T342] R13: 00000000000005dc R14: ffffc900005e7010 R15: ffff88800da12f08
[   23.484966][  T342] FS:  00007effe2264800(0000) GS:ffff8880ac037000(0000) knlGS:0000000000000000
[   23.485512][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.485924][  T342] CR2: 00000000004e5ab0 CR3: 000000000d99d006 CR4: 0000000000772ef0
[   23.486390][  T342] PKRU: 55555554
[   23.486625][  T342] Call Trace:
[   23.486868][  T342]  <TASK>
[ 23.487035][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.487347][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.487664][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.488015][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.488425][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.488736][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.489059][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.489385][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.489841][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.490078][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.490495][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.490850][ T342] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.491176][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.491494][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.491899][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.492212][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.492521][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.492848][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.493160][ T342] ? __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) 
[ 23.493468][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.493876][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.494189][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.494495][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.494815][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.495122][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.495430][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.495739][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.496058][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.496370][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.496674][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.497067][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.497383][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.497696][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.498023][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.498389][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.498704][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.499022][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.499333][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.499641][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.499962][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.500275][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.500588][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.500914][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.501228][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.501548][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.501880][ T342] ? 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) 
[ 23.502196][ T342] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.502505][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.502822][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.503139][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.503460][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.503767][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.504106][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.504426][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.504737][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.505138][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.505449][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.505763][ T342] ? __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) 
[ 23.506173][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.506487][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.506809][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.507123][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.507432][ T342] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.507745][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.508066][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.508392][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.508770][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.509099][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.509408][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.509728][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.510131][  T342] RIP: 0033:0x7effe24311e7
[ 23.510449][ T342] 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)
[   23.511574][  T342] RSP: 002b:00007ffcee3dc838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.512054][  T342] RAX: ffffffffffffffda RBX: 00007ffcee3dcf60 RCX: 00007effe24311e7
[   23.512514][  T342] RDX: 0000000000000000 RSI: 00007ffcee3dc8a0 RDI: 0000000000000005
[   23.512985][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.513585][  T342] R10: 0000000007b69910 R11: 0000000000000246 R12: 0000000000000004
[   23.514062][  T342] R13: 00000000686e4a79 R14: 0000000000499600 R15: 0000000000000000
| [   24.019420][  T345] ------------[ cut here ]------------
| [ 24.019823][ T345] WARNING: CPU: 2 PID: 345 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   24.020475][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.021953][  T345] Tainted: [W]=WARN
[   24.022219][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.022642][ T345] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 24.022998][ T345] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   24.024166][  T345] RSP: 0018:ffffc90000527000 EFLAGS: 00010246
[   24.024573][  T345] RAX: 0000000000000000 RBX: ffff88800b9f1000 RCX: 0000000000000001
[   24.025058][  T345] RDX: 0000000000000000 RSI: ffffffff8829b941 RDI: ffffffff87a555e0
[   24.025537][  T345] RBP: ffffc900005270e8 R08: ffff88800b9f1218 R09: 0000000000000000
[   24.026020][  T345] R10: ffffc90000527118 R11: ffffffff88779160 R12: 1ffff920000a4e04
[   24.026520][  T345] R13: 00000000000005b6 R14: ffffc90000527118 R15: ffff88800b9f1218
[   24.027027][  T345] FS:  00007f81d9bce800(0000) GS:ffff8880abfb7000(0000) knlGS:0000000000000000
[   24.027578][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.028003][  T345] CR2: 0000000000436890 CR3: 000000000e948003 CR4: 0000000000772ef0
[   24.028535][  T345] PKRU: 55555554
[   24.028783][  T345] Call Trace:
[   24.029047][  T345]  <TASK>
[ 24.029217][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.029617][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.029961][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.030290][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.030623][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.031074][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 24.031657][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.032297][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.032883][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.033319][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.033934][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.034512][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.035120][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.035871][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.036472][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.037082][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.037670][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.038279][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.038898][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.039497][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.040092][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.040655][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.041257][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.041875][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.042460][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.043075][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.043643][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.044261][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.044845][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.045458][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.046061][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.046656][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.047245][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.047839][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.048473][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.049090][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 24.049667][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.050259][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.050814][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.051359][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.051979][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.052510][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.053127][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.053718][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.054288][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.055030][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 24.055621][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.056212][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.056830][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.057409][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.058013][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.058603][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.059175][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.059774][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 24.060380][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.060955][ T345] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 24.061555][ T345] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 24.062151][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.062720][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.063315][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.064042][  T345] RIP: 0033:0x7f81d9d9b1e7
[ 24.064650][ T345] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   24.066681][  T345] RSP: 002b:00007ffc6836b4e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.067556][  T345] RAX: ffffffffffffffda RBX: 00007ffc6836bc10 RCX: 00007f81d9d9b1e7
[   24.068437][  T345] RDX: 0000000000000000 RSI: 00007ffc6836b550 RDI: 0000000000000005
[   24.069315][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.070180][  T345] R10: 00007f81d9c936f8 R11: 0000000000000246 R12: 00007ffc6836bc30


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