======================================
| [   19.972808][  T317] ip_gre: GRE over IPv4 tunneling driver
| [   20.026873][  T316] ------------[ cut here ]------------
| [ 20.027343][ T316] WARNING: CPU: 2 PID: 316 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) 
| [   20.028327][  T316] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.029783][  T316] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.030187][ T316] 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) 
[ 20.030651][ T316] 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
[   20.031810][  T316] RSP: 0018:ffffc90000a37000 EFLAGS: 00010246
[   20.032314][  T316] RAX: 0000000000000000 RBX: ffff888009ec9000 RCX: 0000000000000001
[   20.032884][  T316] RDX: 0000000000000000 RSI: ffffffff8549b941 RDI: ffffffff84c555e0
[   20.033550][  T316] RBP: ffffc90000a370e8 R08: ffff888009ec9218 R09: 0000000000000000
[   20.034123][  T316] R10: ffffc90000a37118 R11: ffffffff85979160 R12: 1ffff92000146e04
[   20.034620][  T316] R13: 00000000000005b6 R14: ffffc90000a37118 R15: ffff888009ec9218
[   20.035187][  T316] FS:  00007f4f67446800(0000) GS:ffff8880aedb7000(0000) knlGS:0000000000000000
[   20.035768][  T316] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.036319][  T316] CR2: 00007fe62cc8ae10 CR3: 00000000091e6002 CR4: 0000000000772ef0
[   20.037127][  T316] PKRU: 55555554
[   20.037473][  T316] Call Trace:
[   20.037759][  T316]  <TASK>
[ 20.037934][ T316] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.038368][ T316] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.038737][ T316] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.039158][ T316] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.039516][ T316] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.039852][ T316] netif_set_mtu (net/core/dev.c:9652) 
[ 20.040197][ T316] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.040690][ T316] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.041045][ T316] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.041728][ T316] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.042119][ T316] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.042558][ T316] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.042891][ T316] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.043286][ T316] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.043748][ T316] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.044147][ T316] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.044585][ T316] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.044962][ T316] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.049266][ T316] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.049636][ T316] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.050036][ T316] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.050360][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.050951][ T316] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.051393][ T316] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.051822][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.052156][ T316] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.052655][ T316] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.053054][ T316] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.053918][ T316] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.054268][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.054619][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.054986][ T316] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.059615][ T316] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.060095][ T316] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.060462][ T316] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.060859][ T316] ? 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) 
[ 20.061246][ T316] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.061825][ T316] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.062233][ T316] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.063332][ T316] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.063695][ T316] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.064111][ T316] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.064551][ T316] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.064890][ T316] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.065300][ T316] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.065776][ T316] ___sys_sendmsg (net/socket.c:2670) 
[ 20.066375][ T316] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.070211][ T316] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.070673][ T316] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.071124][ T316] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.071573][ T316] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.071987][ T316] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.072339][ T316] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.073286][ T316] __sys_sendmsg (net/socket.c:2700) 
[ 20.073694][ T316] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.074104][ T316] ? 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) 
[ 20.074700][ T316] ? 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) 
[ 20.075090][ T316] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.075431][ T316] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.075859][ T316] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.076844][  T316] RIP: 0033:0x7f4f676131e7
[ 20.077275][ T316] Code: Unable to access opcode bytes at 0x7f4f676131bd.

Code starting with the faulting instruction
===========================================
[   20.077946][  T316] RSP: 002b:00007ffc1ffbe658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.078481][  T316] RAX: ffffffffffffffda RBX: 00007ffc1ffbed80 RCX: 00007f4f676131e7
[   20.079311][  T316] RDX: 0000000000000000 RSI: 00007ffc1ffbe6c0 RDI: 0000000000000005
[   20.079815][  T316] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.080785][  T316] R10: 00007f4f6750b6f8 R11: 0000000000000246 R12: 00007ffc1ffbeda0
[   20.081272][  T316] R13: 00000000686e4adf R14: 0000000000499600 R15: 00007ffc1ffbe7ac
| [   22.887675][  T344] ------------[ cut here ]------------
| [ 22.888015][ 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) 
| [   22.890138][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.891646][  T344] Tainted: [W]=WARN
[   22.891900][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.892297][ 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) 
[ 22.892639][ T344] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.893758][  T344] RSP: 0018:ffffc90000566ef0 EFLAGS: 00010246
[   22.894166][  T344] RAX: 0000000000000000 RBX: ffff8880114aa000 RCX: 0000000000000001
[   22.894650][  T344] RDX: 0000000000000000 RSI: ffffffff8549b941 RDI: ffffffff84c555e0
[   22.895345][  T344] RBP: ffffc90000566fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.895835][  T344] R10: ffffc90000567010 R11: ffffffff862a8918 R12: 1ffff920000acde2
[   22.896314][  T344] R13: 00000000000005dc R14: ffffc90000567010 R15: ffff8880114aaf08
[   22.896797][  T344] FS:  00007f519f1f1800(0000) GS:ffff8880aedb7000(0000) knlGS:0000000000000000
[   22.897352][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.897777][  T344] CR2: 00000000004e5aa8 CR3: 000000000de67001 CR4: 0000000000772ef0
[   22.898254][  T344] PKRU: 55555554
[   22.898510][  T344] Call Trace:
[   22.898765][  T344]  <TASK>
[ 22.898939][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.899271][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.899615][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.899940][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.900351][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.900700][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 22.901032][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.901374][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.901833][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.902085][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.902537][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.903164][ T344] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.903724][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.904057][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.904466][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.905024][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.905345][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.905687][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.906011][ T344] ? __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) 
[ 22.906335][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.906735][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.907060][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.907382][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.907933][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.908262][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.908597][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.909146][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 22.909704][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.910027][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.910346][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.910746][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.911311][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.911656][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.911982][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.912311][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.912644][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.912959][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.913282][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.913611][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.913937][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.914266][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.914613][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.915166][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.915500][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.915831][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.916149][ 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) 
[ 22.916472][ T344] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.917028][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.917355][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.917687][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.918014][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.918565][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.918894][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.919221][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.919554][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.920186][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 22.920514][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.920834][ T344] ? __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) 
[ 22.921246][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.921805][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.922129][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.922450][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.923002][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.923327][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.923666][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 22.923982][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.924610][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.924941][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.925273][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.925602][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.926233][  T344] RIP: 0033:0x7f519f3be1e7
[ 22.926573][ 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)
[   22.927933][  T344] RSP: 002b:00007ffd9de32b28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.928419][  T344] RAX: ffffffffffffffda RBX: 00007ffd9de33250 RCX: 00007f519f3be1e7
[   22.929128][  T344] RDX: 0000000000000000 RSI: 00007ffd9de32b90 RDI: 0000000000000005
[   22.929614][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.930083][  T344] R10: 000000001a4de910 R11: 0000000000000246 R12: 0000000000000004
[   22.930799][  T344] R13: 00000000686e4ae2 R14: 0000000000499600 R15: 0000000000000000
| [   23.163785][  T346] ------------[ cut here ]------------
| [ 23.164100][ T346] WARNING: CPU: 3 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) 
| [   23.165853][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.167236][  T346] Tainted: [W]=WARN
[   23.167470][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.167863][ 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) 
[ 23.168180][ 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
[   23.169276][  T346] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   23.169675][  T346] RAX: 0000000000000000 RBX: ffff8880114aa000 RCX: 0000000000000001
[   23.170136][  T346] RDX: 0000000000000000 RSI: ffffffff8549b941 RDI: ffffffff84c555e0
[   23.170608][  T346] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.171078][  T346] R10: ffffc900005c7010 R11: ffffffff862a8918 R12: 1ffff920000b8de2
[   23.171554][  T346] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff8880114aaf08
[   23.172013][  T346] FS:  00007f79d7fa3800(0000) GS:ffff8880aee37000(0000) knlGS:0000000000000000
[   23.172559][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.172945][  T346] CR2: 00000000004e5ab0 CR3: 000000000dffd006 CR4: 0000000000772ef0
[   23.173405][  T346] PKRU: 55555554
[   23.173645][  T346] Call Trace:
[   23.173875][  T346]  <TASK>
[ 23.174034][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.174341][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.174674][ T346] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.174982][ T346] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.175364][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.175684][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.175993][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.176309][ T346] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.176754][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.176988][ T346] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.177405][ T346] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.177769][ T346] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.178083][ T346] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.178393][ T346] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.178787][ T346] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.179103][ T346] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.179405][ T346] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.179728][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.180037][ T346] ? __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) 
[ 23.180346][ T346] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.180730][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.181046][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.181360][ T346] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.181674][ T346] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.181987][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.182291][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.182600][ T346] ? __create_object (mm/kmemleak.c:771) 
[ 23.182909][ T346] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.183217][ T346] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.183529][ T346] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.183914][ T346] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.184228][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.184549][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.184855][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.185167][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.185473][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.185785][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.186093][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.186404][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.186721][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.187030][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.187340][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.187659][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.187965][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.188279][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.188597][ 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) 
[ 23.188906][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.189214][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.189524][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.189836][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.190146][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.190452][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.190784][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.191115][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.191420][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.191840][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.192146][ T346] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.192451][ T346] ? __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) 
[ 23.192844][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.193159][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.193468][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.193794][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.194102][ T346] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.194406][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.194732][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.195036][ T346] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.195431][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.195757][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.196067][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.196374][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.196806][  T346] RIP: 0033:0x7f79d81701e7
[ 23.197125][ 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)
[   23.198234][  T346] RSP: 002b:00007ffc88208138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.198711][  T346] RAX: ffffffffffffffda RBX: 00007ffc88208860 RCX: 00007f79d81701e7
[   23.199173][  T346] RDX: 0000000000000000 RSI: 00007ffc882081a0 RDI: 0000000000000005
[   23.199640][  T346] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.200105][  T346] R10: 000000002b5bc910 R11: 0000000000000246 R12: 0000000000000004
[   23.200576][  T346] R13: 00000000686e4ae2 R14: 0000000000499600 R15: 0000000000000000
| [   23.606445][  T349] ------------[ cut here ]------------
| [ 23.606818][ T349] WARNING: CPU: 3 PID: 349 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) 
| [   23.607431][  T349] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.609102][  T349] Tainted: [W]=WARN
[   23.609340][  T349] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.609735][ T349] 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) 
[ 23.610086][ T349] 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
[   23.611221][  T349] RSP: 0018:ffffc90000c17000 EFLAGS: 00010246
[   23.611625][  T349] RAX: 0000000000000000 RBX: ffff888002654000 RCX: 0000000000000001
[   23.612090][  T349] RDX: 0000000000000000 RSI: ffffffff8549b941 RDI: ffffffff84c555e0
[   23.612566][  T349] RBP: ffffc90000c170e8 R08: ffff888002654218 R09: 0000000000000000
[   23.613037][  T349] R10: ffffc90000c17118 R11: ffffffff85979160 R12: 1ffff92000182e04
[   23.613508][  T349] R13: 00000000000005b6 R14: ffffc90000c17118 R15: ffff888002654218
[   23.613970][  T349] FS:  00007f00b56e6800(0000) GS:ffff8880aee37000(0000) knlGS:0000000000000000
[   23.614523][  T349] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.614916][  T349] CR2: 0000000000436890 CR3: 000000000992b005 CR4: 0000000000772ef0
[   23.615379][  T349] PKRU: 55555554
[   23.615618][  T349] Call Trace:
[   23.615855][  T349]  <TASK>
[ 23.616011][ T349] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.616392][ T349] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.616713][ T349] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.617024][ T349] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.617339][ T349] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.617665][ T349] netif_set_mtu (net/core/dev.c:9652) 
[ 23.617975][ T349] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.618296][ T349] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.618610][ T349] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.618838][ T349] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.619144][ T349] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.619459][ T349] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.619779][ T349] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.620160][ T349] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.620476][ T349] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.620792][ T349] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.621113][ T349] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.621416][ T349] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.621736][ T349] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.622049][ T349] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.622355][ T349] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.622667][ T349] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.622981][ T349] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.623297][ T349] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.623634][ T349] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.623959][ T349] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.624269][ T349] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.624583][ T349] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.624886][ T349] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.625195][ T349] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.625512][ T349] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.625828][ T349] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.626139][ T349] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.626450][ T349] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.626784][ T349] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.627098][ T349] ? 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) 
[ 23.627417][ T349] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.627736][ T349] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.628051][ T349] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.628363][ T349] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.628680][ T349] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.628985][ T349] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.629296][ T349] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.629618][ T349] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.629922][ T349] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.630317][ T349] ___sys_sendmsg (net/socket.c:2670) 
[ 23.630642][ T349] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.630950][ T349] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.631273][ T349] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.631586][ T349] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.631900][ T349] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.632208][ T349] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.632529][ T349] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.632853][ T349] __sys_sendmsg (net/socket.c:2700) 
[ 23.633158][ T349] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.633462][ T349] ? 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) 
[ 23.633788][ T349] ? 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) 
[ 23.634102][ T349] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.634414][ T349] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.634737][ T349] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.635120][  T349] RIP: 0033:0x7f00b58b31e7
[ 23.635439][ T349] 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)
[   23.636547][  T349] RSP: 002b:00007ffc3c0f2f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.637025][  T349] RAX: ffffffffffffffda RBX: 00007ffc3c0f3670 RCX: 00007f00b58b31e7
[   23.637521][  T349] RDX: 0000000000000000 RSI: 00007ffc3c0f2fb0 RDI: 0000000000000005
[   23.637982][  T349] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.638445][  T349] R10: 00007f00b57ab6f8 R11: 0000000000000246 R12: 00007ffc3c0f3690


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