======================================
| [   20.166152][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.221543][  T313] ------------[ cut here ]------------
| [ 20.222197][ T313] WARNING: CPU: 1 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.222853][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.224029][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.224412][ T313] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.225023][ T313] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.226309][  T313] RSP: 0018:ffffc90000647000 EFLAGS: 00010246
[   20.226852][  T313] RAX: 0000000000000000 RBX: ffff88800abb1000 RCX: 0000000000000001
[   20.227334][  T313] RDX: 0000000000000000 RSI: ffffffffa4e9b941 RDI: ffffffffa46555e0
[   20.227956][  T313] RBP: ffffc900006470e8 R08: ffff88800abb1218 R09: 0000000000000000
[   20.228414][  T313] R10: ffffc90000647118 R11: ffffffffa5379160 R12: 1ffff920000c8e04
[   20.229015][  T313] R13: 00000000000005b6 R14: ffffc90000647118 R15: ffff88800abb1218
[   20.229482][  T313] FS:  00007fae600ba800(0000) GS:ffff88808f337000(0000) knlGS:0000000000000000
[   20.230037][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.230424][  T313] CR2: 000055ef759a6d58 CR3: 000000000cd0b005 CR4: 0000000000772ef0
[   20.230913][  T313] PKRU: 55555554
[   20.231146][  T313] Call Trace:
[   20.231377][  T313]  <TASK>
[ 20.231538][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.231967][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.232279][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.232611][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.232936][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.233250][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.233567][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.233926][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.234249][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.234484][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.234810][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.235165][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.235487][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.235879][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.236195][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.236520][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.236838][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.237144][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.237945][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.238483][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.238805][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.239105][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.239644][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.240197][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.240505][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.240839][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.241140][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.241444][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.242079][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.242398][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.242729][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.243041][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.243569][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.243883][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.244203][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.244508][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.244824][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.245147][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.245456][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.245781][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.246319][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.246666][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.246993][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.247305][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.247843][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.248269][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.248576][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.248889][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.249458][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.249770][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.250077][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.250405][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.250947][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.251273][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.251874][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.252190][ T313] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.252735][ T313] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.253042][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.253349][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.253662][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.254260][  T313] RIP: 0033:0x7fae602871e7
[ 20.254592][ T313] Code: Unable to access opcode bytes at 0x7fae602871bd.

Code starting with the faulting instruction
===========================================
[   20.254996][  T313] RSP: 002b:00007ffc6b8f17e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.255707][  T313] RAX: ffffffffffffffda RBX: 00007ffc6b8f1f10 RCX: 00007fae602871e7
[   20.256170][  T313] RDX: 0000000000000000 RSI: 00007ffc6b8f1850 RDI: 0000000000000005
[   20.256634][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.257114][  T313] R10: 00007fae6017f6f8 R11: 0000000000000246 R12: 00007ffc6b8f1f30
[   20.257574][  T313] R13: 00000000686e47c5 R14: 0000000000499600 R15: 00007ffc6b8f193c
| [   23.178915][  T341] ------------[ cut here ]------------
| [ 23.179227][ T341] WARNING: CPU: 3 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) 
| [   23.180978][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.182431][  T341] Tainted: [W]=WARN
[   23.182676][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.183056][ 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) 
[ 23.183374][ T341] 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
[   23.184476][  T341] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   23.184873][  T341] RAX: 0000000000000000 RBX: ffff88800ced2000 RCX: 0000000000000001
[   23.185328][  T341] RDX: 0000000000000000 RSI: ffffffffa4e9b941 RDI: ffffffffa46555e0
[   23.185790][  T341] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.186252][  T341] R10: ffffc90000577010 R11: ffffffffa5ca8918 R12: 1ffff920000aede2
[   23.186921][  T341] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800ced2f08
[   23.187379][  T341] FS:  00007fe3e468f800(0000) GS:ffff88808f437000(0000) knlGS:0000000000000000
[   23.187914][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.188302][  T341] CR2: 00000000004e5aa8 CR3: 000000000ce36006 CR4: 0000000000772ef0
[   23.188769][  T341] PKRU: 55555554
[   23.189002][  T341] Call Trace:
[   23.189255][  T341]  <TASK>
[ 23.189417][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.189734][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.190046][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.190354][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.190745][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.191051][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.191354][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.191678][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.192107][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.192338][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.192762][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.193105][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.193417][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.193733][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.194117][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.194418][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.194727][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.195041][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.195347][ 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) 
[ 23.195676][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.196055][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.196366][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.196678][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.196981][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.197292][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.197594][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.197901][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.198215][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.198524][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.198845][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.199224][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.199542][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.199861][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.200169][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.200478][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.200793][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.201095][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.201402][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.201722][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.202035][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.202345][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.202664][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.202971][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.203278][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.203593][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.203908][ 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) 
[ 23.204217][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.204531][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.204843][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.205154][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.205462][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.205779][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.206096][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.206407][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.206721][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.207120][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.207420][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.207736][ 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) 
[ 23.208114][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.208419][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.208756][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.209069][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.209373][ 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) 
[ 23.209690][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.210006][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.210310][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.210696][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.211015][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.211324][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.211629][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.212024][  T341] RIP: 0033:0x7fe3e485c1e7
[ 23.212340][ 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)
[   23.213448][  T341] RSP: 002b:00007ffe76563808 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.213922][  T341] RAX: ffffffffffffffda RBX: 00007ffe76563f30 RCX: 00007fe3e485c1e7
[   23.214378][  T341] RDX: 0000000000000000 RSI: 00007ffe76563870 RDI: 0000000000000005
[   23.214844][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.215304][  T341] R10: 000000000c4d7910 R11: 0000000000000246 R12: 0000000000000004
[   23.215772][  T341] R13: 00000000686e47c8 R14: 0000000000499600 R15: 0000000000000000
| [   23.455250][  T343] ------------[ cut here ]------------
| [ 23.455573][ T343] WARNING: CPU: 0 PID: 343 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.456197][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.457544][  T343] Tainted: [W]=WARN
[   23.457788][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.458170][ T343] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.458483][ T343] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.459583][  T343] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   23.459976][  T343] RAX: 0000000000000000 RBX: ffff88800ced2000 RCX: 0000000000000001
[   23.460435][  T343] RDX: 0000000000000000 RSI: ffffffffa4e9b941 RDI: ffffffffa46555e0
[   23.460912][  T343] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.461369][  T343] R10: ffffc90000577010 R11: ffffffffa5ca8918 R12: 1ffff920000aede2
[   23.462109][  T343] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800ced2f08
[   23.462568][  T343] FS:  00007f3c3d73b800(0000) GS:ffff88808f2b7000(0000) knlGS:0000000000000000
[   23.463250][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.463634][  T343] CR2: 00000000004e5ab0 CR3: 000000000cd04002 CR4: 0000000000772ef0
[   23.464226][  T343] PKRU: 55555554
[   23.464456][  T343] Call Trace:
[   23.464694][  T343]  <TASK>
[ 23.464853][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.465161][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.465473][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.465794][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.466177][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.466488][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.466803][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.467127][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.467547][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.467788][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.468200][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.468545][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.468867][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.469184][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.469569][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.469890][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.470195][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.470504][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.470840][ T343] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.471156][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.471532][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.471858][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.472162][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.472463][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.472778][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.473088][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.473393][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.473717][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.474030][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.474335][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.474723][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.475033][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.475342][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.475657][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.475973][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.476276][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.476576][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.476890][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.477192][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.477498][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.477822][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.478140][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.478449][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.478763][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.479079][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.479381][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.479697][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.480006][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.480313][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.480623][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.480943][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.481249][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.481562][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.481906][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.482212][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.482603][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.482917][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.483224][ T343] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.483603][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.483920][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.484231][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.484542][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.484858][ T343] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.485180][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.485493][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.485812][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.486190][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.486508][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.486827][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.487144][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.487527][  T343] RIP: 0033:0x7f3c3d9081e7
[ 23.487852][ T343] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.488959][  T343] RSP: 002b:00007fffdea7a128 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.489423][  T343] RAX: ffffffffffffffda RBX: 00007fffdea7a850 RCX: 00007f3c3d9081e7
[   23.489904][  T343] RDX: 0000000000000000 RSI: 00007fffdea7a190 RDI: 0000000000000005
[   23.490359][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.490825][  T343] R10: 0000000038a4d910 R11: 0000000000000246 R12: 0000000000000004
[   23.491281][  T343] R13: 00000000686e47c9 R14: 0000000000499600 R15: 0000000000000000
| [   23.887512][  T346] ------------[ cut here ]------------
| [ 23.887917][ T346] WARNING: CPU: 2 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) 
| [   23.888545][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.890551][  T346] Tainted: [W]=WARN
[   23.890816][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.891222][ 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) 
[ 23.891552][ 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
[   23.892682][  T346] RSP: 0018:ffffc90000557000 EFLAGS: 00010246
[   23.893096][  T346] RAX: 0000000000000000 RBX: ffff88800e929000 RCX: 0000000000000001
[   23.893571][  T346] RDX: 0000000000000000 RSI: ffffffffa4e9b941 RDI: ffffffffa46555e0
[   23.894053][  T346] RBP: ffffc900005570e8 R08: ffff88800e929218 R09: 0000000000000000
[   23.894529][  T346] R10: ffffc90000557118 R11: ffffffffa5379160 R12: 1ffff920000aae04
[   23.895012][  T346] R13: 00000000000005b6 R14: ffffc90000557118 R15: ffff88800e929218
[   23.895483][  T346] FS:  00007f61607f8800(0000) GS:ffff88808f3b7000(0000) knlGS:0000000000000000
[   23.896039][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.896439][  T346] CR2: 0000000000436890 CR3: 000000000ce38006 CR4: 0000000000772ef0
[   23.896952][  T346] PKRU: 55555554
[   23.897200][  T346] Call Trace:
[   23.897443][  T346]  <TASK>
[ 23.897612][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.898024][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.898348][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.898684][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.899007][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.899333][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.899669][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.900004][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.900324][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.900564][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.900899][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.901225][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.901550][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.901981][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.902309][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.902628][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.902964][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.903282][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.903603][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.903950][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.904280][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.904596][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.904932][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.905260][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.905584][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.905927][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.906247][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.906566][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.906907][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.907231][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.907559][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.907894][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.908216][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.908534][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.908877][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.909201][ 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) 
[ 23.909523][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.909855][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.910174][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.910498][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.910839][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.911162][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.911491][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.911840][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.912160][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.912567][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.912897][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.913215][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.913537][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.913869][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.914194][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.914541][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.914874][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.915215][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.915533][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.915864][ T346] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.916191][ T346] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.916516][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.916847][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.917168][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.917554][  T346] RIP: 0033:0x7f61609c51e7
[ 23.917896][ 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)
[   23.919006][  T346] RSP: 002b:00007ffe0d988ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.919481][  T346] RAX: ffffffffffffffda RBX: 00007ffe0d989200 RCX: 00007f61609c51e7
[   23.919956][  T346] RDX: 0000000000000000 RSI: 00007ffe0d988b40 RDI: 0000000000000005
[   23.920435][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.920912][  T346] R10: 00007f61608bd6f8 R11: 0000000000000246 R12: 00007ffe0d989220


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