======================================
| [   19.798286][  T312] ip_gre: GRE over IPv4 tunneling driver
| [   19.865285][  T311] ------------[ cut here ]------------
| [ 19.865831][ T311] WARNING: CPU: 0 PID: 311 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.866614][  T311] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.867762][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.868152][ T311] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.868479][ T311] 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
[   19.869825][  T311] RSP: 0018:ffffc900005f7000 EFLAGS: 00010246
[   19.870223][  T311] RAX: 0000000000000000 RBX: ffff888004fc4000 RCX: 0000000000000001
[   19.870932][  T311] RDX: 0000000000000000 RSI: ffffffffb629b939 RDI: ffffffffb5a555e0
[   19.871392][  T311] RBP: ffffc900005f70e8 R08: ffff888004fc4218 R09: 0000000000000000
[   19.872416][  T311] R10: ffffc900005f7118 R11: ffffffffb6779160 R12: 1ffff920000bee04
[   19.873178][  T311] R13: 00000000000005b6 R14: ffffc900005f7118 R15: ffff888004fc4218
[   19.874014][  T311] FS:  00007f05063dd800(0000) GS:ffff88807deb7000(0000) knlGS:0000000000000000
[   19.875085][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.875479][  T311] CR2: 00007faca34b1ba0 CR3: 000000000c338001 CR4: 0000000000772ef0
[   19.876712][  T311] PKRU: 55555554
[   19.877170][  T311] Call Trace:
[   19.877401][  T311]  <TASK>
[ 19.877842][ T311] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.878236][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.878823][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.879359][ T311] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.879951][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.880269][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 19.880787][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.881134][ T311] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.881445][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.881900][ T311] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.882212][ T311] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.883168][ T311] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.883483][ T311] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.884067][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.884889][ T311] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.885201][ T311] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 19.885516][ T311] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.885889][ T311] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.886418][ T311] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.886735][ T311] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.887052][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.887362][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.887687][ T311] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.888004][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.888317][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.888640][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.888942][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.889251][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.890667][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.890987][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.891297][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.891617][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.891926][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.892234][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.892561][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.892869][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.893179][ T311] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.893491][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.893805][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.894120][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.894431][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.894749][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.895066][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.895377][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.895696][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.896094][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 19.896403][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.896721][ T311] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.897034][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.897341][ T311] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.897658][ T311] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.897964][ T311] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.898266][ T311] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.898596][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 19.898900][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.899207][ T311] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 19.899519][ T311] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 19.899833][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.900142][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.900451][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.900838][  T311] RIP: 0033:0x7f05065aa1e7
[ 19.901180][ T311] Code: Unable to access opcode bytes at 0x7f05065aa1bd.

Code starting with the faulting instruction
===========================================
[   19.901587][  T311] RSP: 002b:00007ffc01a62518 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.902051][  T311] RAX: ffffffffffffffda RBX: 00007ffc01a62c40 RCX: 00007f05065aa1e7
[   19.902511][  T311] RDX: 0000000000000000 RSI: 00007ffc01a62580 RDI: 0000000000000005
[   19.902998][  T311] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.903464][  T311] R10: 00007f05064a26f8 R11: 0000000000000246 R12: 00007ffc01a62c60
[   19.903929][  T311] R13: 00000000686e648a R14: 0000000000499600 R15: 00007ffc01a6266c
| [   22.733728][  T339] ------------[ cut here ]------------
| [ 22.734065][ T339] WARNING: CPU: 2 PID: 339 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) 
| [   22.735824][  T339] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.737273][  T339] Tainted: [W]=WARN
[   22.737522][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.737944][ T339] 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) 
[ 22.738273][ T339] 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
[   22.739370][  T339] RSP: 0018:ffffc900005b6ef0 EFLAGS: 00010246
[   22.739818][  T339] RAX: 0000000000000000 RBX: ffff88800f07a000 RCX: 0000000000000001
[   22.740457][  T339] RDX: 0000000000000000 RSI: ffffffffb629b939 RDI: ffffffffb5a555e0
[   22.740952][  T339] RBP: ffffc900005b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.741421][  T339] R10: ffffc900005b7010 R11: ffffffffb70a8918 R12: 1ffff920000b6de2
[   22.741898][  T339] R13: 00000000000005dc R14: ffffc900005b7010 R15: ffff88800f07af08
[   22.742372][  T339] FS:  00007f60bacd3800(0000) GS:ffff88807dfb7000(0000) knlGS:0000000000000000
[   22.742923][  T339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.743319][  T339] CR2: 00000000004e5aa8 CR3: 0000000009dff002 CR4: 0000000000772ef0
[   22.743798][  T339] PKRU: 55555554
[   22.744037][  T339] Call Trace:
[   22.744284][  T339]  <TASK>
[ 22.744456][ T339] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.744784][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.745112][ T339] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.745428][ T339] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.745831][ T339] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.746148][ T339] netif_set_mtu (net/core/dev.c:9652) 
[ 22.746468][ T339] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.746812][ T339] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.747251][ T339] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.747494][ T339] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.747934][ T339] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.748298][ T339] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.748631][ T339] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.748962][ T339] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.749361][ T339] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.749685][ T339] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.750005][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.750324][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.750663][ T339] ? __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) 
[ 22.750988][ T339] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.751384][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.751711][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.752029][ T339] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.752342][ T339] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.752673][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.752992][ T339] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.753304][ T339] ? __create_object (mm/kmemleak.c:771) 
[ 22.753633][ T339] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.753958][ T339] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.754271][ T339] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.754669][ T339] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.754990][ T339] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.755311][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.755635][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.755959][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.756279][ T339] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.756609][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.756928][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.757243][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.757573][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.757893][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.758214][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.758539][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.758864][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.759191][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.759506][ T339] ? 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) 
[ 22.759834][ T339] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.760153][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.760468][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.760799][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.761131][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.761448][ T339] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.761780][ T339] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.762101][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.762413][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.762827][ T339] ___sys_sendmsg (net/socket.c:2670) 
[ 22.763145][ T339] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.763469][ T339] ? __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) 
[ 22.763866][ T339] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.764188][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.764505][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.764837][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.765154][ T339] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.765469][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.765808][ T339] __sys_sendmsg (net/socket.c:2700) 
[ 22.766126][ T339] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.766515][ T339] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.766854][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.767177][ T339] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.767494][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.767893][  T339] RIP: 0033:0x7f60baea01e7
[ 22.768222][ T339] 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)
[   22.769334][  T339] RSP: 002b:00007ffd613a7768 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.769832][  T339] RAX: ffffffffffffffda RBX: 00007ffd613a7e90 RCX: 00007f60baea01e7
[   22.770310][  T339] RDX: 0000000000000000 RSI: 00007ffd613a77d0 RDI: 0000000000000005
[   22.770789][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.771271][  T339] R10: 00000000303e6910 R11: 0000000000000246 R12: 0000000000000004
[   22.771746][  T339] R13: 00000000686e648d R14: 0000000000499600 R15: 0000000000000000
| [   23.008002][  T341] ------------[ cut here ]------------
| [ 23.008337][ T341] WARNING: CPU: 2 PID: 341 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.008981][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.010742][  T341] Tainted: [W]=WARN
[   23.011005][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.011405][ T341] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.011749][ T341] 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
[   23.012881][  T341] RSP: 0018:ffffc900005b6ef0 EFLAGS: 00010246
[   23.013289][  T341] RAX: 0000000000000000 RBX: ffff88800f07a000 RCX: 0000000000000001
[   23.013783][  T341] RDX: 0000000000000000 RSI: ffffffffb629b939 RDI: ffffffffb5a555e0
[   23.014259][  T341] RBP: ffffc900005b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.014735][  T341] R10: ffffc900005b7010 R11: ffffffffb70a8918 R12: 1ffff920000b6de2
[   23.015202][  T341] R13: 00000000000005dc R14: ffffc900005b7010 R15: ffff88800f07af08
[   23.015688][  T341] FS:  00007f31b539b800(0000) GS:ffff88807dfb7000(0000) knlGS:0000000000000000
[   23.016230][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.016652][  T341] CR2: 00000000004e5ab0 CR3: 0000000009dff004 CR4: 0000000000772ef0
[   23.017129][  T341] PKRU: 55555554
[   23.017369][  T341] Call Trace:
[   23.017629][  T341]  <TASK>
[ 23.017803][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.018120][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.018445][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.018777][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.019174][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.019492][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.019826][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.020160][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.020623][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.020884][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.021321][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.021695][ T341] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.022020][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.022350][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.022760][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.023075][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.023391][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.023724][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.024047][ T341] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.024362][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.024786][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.025113][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.025430][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.025754][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.026073][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.026387][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.026730][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.027046][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.027372][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.027698][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.028121][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.028454][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.028811][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.029133][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.029458][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.029795][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.030125][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.030449][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.030779][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.031109][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.031440][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.031782][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.032101][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.032443][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.032825][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.033154][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.033473][ T341] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.033806][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.034124][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.034454][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.034802][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.035129][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.035452][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.035791][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.036115][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.036519][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.036861][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.037193][ T341] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.037601][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.037934][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.038252][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.038594][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.038914][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.039247][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.039589][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.039914][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.040306][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.040673][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.041032][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.041358][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.041770][  T341] RIP: 0033:0x7f31b55681e7
[ 23.042100][ T341] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.043223][  T341] RSP: 002b:00007fffd92096a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.043707][  T341] RAX: ffffffffffffffda RBX: 00007fffd9209dd0 RCX: 00007f31b55681e7
[   23.044181][  T341] RDX: 0000000000000000 RSI: 00007fffd9209710 RDI: 0000000000000005
[   23.044673][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.045150][  T341] R10: 000000002c5ad910 R11: 0000000000000246 R12: 0000000000000004
[   23.045629][  T341] R13: 00000000686e648d R14: 0000000000499600 R15: 0000000000000000
| [   23.476355][  T344] ------------[ cut here ]------------
| [ 23.476999][ T344] WARNING: CPU: 2 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.478168][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.480729][  T344] Tainted: [W]=WARN
[   23.481185][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.481932][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.482518][ T344] 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
[   23.484569][  T344] RSP: 0018:ffffc90000657000 EFLAGS: 00010246
[   23.485309][  T344] RAX: 0000000000000000 RBX: ffff888005e91000 RCX: 0000000000000001
[   23.486186][  T344] RDX: 0000000000000000 RSI: ffffffffb629b939 RDI: ffffffffb5a555e0
[   23.487056][  T344] RBP: ffffc900006570e8 R08: ffff888005e91218 R09: 0000000000000000
[   23.487947][  T344] R10: ffffc90000657118 R11: ffffffffb6779160 R12: 1ffff920000cae04
[   23.488849][  T344] R13: 00000000000005b6 R14: ffffc90000657118 R15: ffff888005e91218
[   23.489701][  T344] FS:  00007f9467ba3800(0000) GS:ffff88807dfb7000(0000) knlGS:0000000000000000
[   23.490735][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.491478][  T344] CR2: 00007f9467e0c960 CR3: 000000001068f002 CR4: 0000000000772ef0
[   23.492367][  T344] PKRU: 55555554
[   23.492844][  T344] Call Trace:
[   23.493280][  T344]  <TASK>
[ 23.493578][ T344] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.494280][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.494867][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.495435][ T344] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.496027][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.496620][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.497197][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.497811][ T344] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.498399][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.498860][ T344] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.499434][ T344] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.499987][ T344] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.500571][ T344] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.501300][ T344] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.501895][ T344] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.502455][ T344] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.503063][ T344] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.503647][ T344] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.504232][ T344] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.504812][ T344] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.505402][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.506000][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.506604][ T344] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.507214][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.507814][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.508422][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.508991][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.509556][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.510099][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.510701][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.511308][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.511900][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.512419][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.512994][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.513584][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.514138][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.514697][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.515238][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.515797][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.516345][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.516891][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.517422][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.518003][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.518579][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.519119][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.519814][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.520344][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.520902][ T344] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.521447][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.522017][ T344] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.522593][ T344] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.523160][ T344] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.523722][ T344] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.524306][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.524885][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.525442][ T344] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.526042][ T344] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.526609][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.527184][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.527771][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.528396][  T344] RIP: 0033:0x7f9467d701e7
[ 23.529002][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.530993][  T344] RSP: 002b:00007ffd172cfa48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.531654][  T344] RAX: ffffffffffffffda RBX: 00007ffd172d0170 RCX: 00007f9467d701e7
[   23.532128][  T344] RDX: 0000000000000000 RSI: 00007ffd172cfab0 RDI: 0000000000000005
[   23.532627][  T344] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.533112][  T344] R10: 00007f9467c686f8 R11: 0000000000000246 R12: 00007ffd172d0190


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