======================================
| [   19.772774][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   19.819298][  T313] ------------[ cut here ]------------
| [ 19.819916][ T313] WARNING: CPU: 0 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.820536][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.821579][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.821986][ T313] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.822511][ T313] 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
[   19.823620][  T313] RSP: 0018:ffffc90000b17000 EFLAGS: 00010246
[   19.824028][  T313] RAX: 0000000000000000 RBX: ffff888004d04000 RCX: 0000000000000001
[   19.824510][  T313] RDX: 0000000000000000 RSI: ffffffff89e9b939 RDI: ffffffff896555e0
[   19.824990][  T313] RBP: ffffc90000b170e8 R08: ffff888004d04218 R09: 0000000000000000
[   19.825452][  T313] R10: ffffc90000b17118 R11: ffffffff8a379160 R12: 1ffff92000162e04
[   19.825926][  T313] R13: 00000000000005b6 R14: ffffc90000b17118 R15: ffff888004d04218
[   19.826396][  T313] FS:  00007f61309e6800(0000) GS:ffff8880aa2b7000(0000) knlGS:0000000000000000
[   19.826947][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.827338][  T313] CR2: 00007f1e851bf000 CR3: 0000000009c5a004 CR4: 0000000000772ef0
[   19.827961][  T313] PKRU: 55555554
[   19.828199][  T313] Call Trace:
[   19.828431][  T313]  <TASK>
[ 19.828591][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.828990][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.829302][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.829613][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.829939][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.830252][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 19.830561][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.830896][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.831224][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.831456][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.831771][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.832098][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.832410][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.832799][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.833129][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.833443][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 19.833759][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.834062][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.834367][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.834682][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.835000][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.835312][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.835627][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.835952][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.836261][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.836589][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.836900][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.837207][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.856053][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.856394][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.856735][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.857050][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.857446][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.857769][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.858091][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.858400][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.858720][ T313] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.859041][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.859357][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.859681][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.859994][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.860304][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.860636][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.860961][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.861270][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.861673][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 19.862210][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.862521][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.862848][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.863638][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.863965][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.864271][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.864581][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.865134][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 19.865443][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.865755][ T313] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 19.866076][ T313] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 19.866389][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.867153][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.867693][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.868081][  T313] RIP: 0033:0x7f6130bb31e7
[ 19.868411][ T313] Code: Unable to access opcode bytes at 0x7f6130bb31bd.

Code starting with the faulting instruction
===========================================
[   19.868820][  T313] RSP: 002b:00007ffc8ca461d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.869296][  T313] RAX: ffffffffffffffda RBX: 00007ffc8ca46900 RCX: 00007f6130bb31e7
[   19.869997][  T313] RDX: 0000000000000000 RSI: 00007ffc8ca46240 RDI: 0000000000000005
[   19.870468][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.870968][  T313] R10: 00007f6130aab6f8 R11: 0000000000000246 R12: 00007ffc8ca46920
[   19.871437][  T313] R13: 00000000686e73e8 R14: 0000000000499600 R15: 00007ffc8ca4632c
| [   22.872287][  T341] ------------[ cut here ]------------
| [ 22.872627][ 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) 
| [   22.873347][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.876417][  T341] Tainted: [W]=WARN
[   22.876884][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.877322][ 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) 
[ 22.877731][ 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
[   22.878882][  T341] RSP: 0018:ffffc90000586ef0 EFLAGS: 00010246
[   22.879292][  T341] RAX: 0000000000000000 RBX: ffff888004f6a000 RCX: 0000000000000001
[   22.879971][  T341] RDX: 0000000000000000 RSI: ffffffff89e9b939 RDI: ffffffff896555e0
[   22.881201][  T341] RBP: ffffc90000586fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.881951][  T341] R10: ffffc90000587010 R11: ffffffff8aca8918 R12: 1ffff920000b0de2
[   22.882718][  T341] R13: 00000000000005dc R14: ffffc90000587010 R15: ffff888004f6af08
[   22.883495][  T341] FS:  00007f7763bf5800(0000) GS:ffff8880aa437000(0000) knlGS:0000000000000000
[   22.884361][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.884991][  T341] CR2: 00000000004e5aa8 CR3: 00000000134b4001 CR4: 0000000000772ef0
[   22.885726][  T341] PKRU: 55555554
[   22.886112][  T341] Call Trace:
[   22.886486][  T341]  <TASK>
[ 22.886764][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.887254][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.887777][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.888286][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.888935][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.889443][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 22.889972][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.890505][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.891219][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.891596][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.892301][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.892920][ T341] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.893518][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.894026][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.894679][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.895167][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.895675][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.896163][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.896671][ 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) 
[ 22.897163][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.897791][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.898338][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.898860][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.899361][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.899944][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.900475][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.901020][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 22.901516][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.902057][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.902533][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.903134][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.903688][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.904220][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.904713][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.905335][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.905859][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.906383][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.906898][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.907387][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.907880][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.908368][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.908891][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.909383][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.909916][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.910577][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.911172][ 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) 
[ 22.911678][ T341] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.912203][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.912728][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.913231][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.913762][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.914300][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.914853][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.915375][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.915867][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.916481][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 22.916971][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.917530][ 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) 
[ 22.918148][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.918680][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.919325][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.919837][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.920461][ 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) 
[ 22.921150][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.921693][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 22.922246][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.922923][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.923426][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.923961][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.924479][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.925132][  T341] RIP: 0033:0x7f7763dc21e7
[ 22.925628][ 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)
[   22.927418][  T341] RSP: 002b:00007ffca8c67a38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.928204][  T341] RAX: ffffffffffffffda RBX: 00007ffca8c68160 RCX: 00007f7763dc21e7
[   22.928999][  T341] RDX: 0000000000000000 RSI: 00007ffca8c67aa0 RDI: 0000000000000005
[   22.929766][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.930568][  T341] R10: 000000000cb06910 R11: 0000000000000246 R12: 0000000000000004
[   22.931595][  T341] R13: 00000000686e73eb R14: 0000000000499600 R15: 0000000000000000
| [   23.233774][  T343] ------------[ cut here ]------------
| [ 23.234099][ T343] WARNING: CPU: 3 PID: 343 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.234807][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.237051][  T343] Tainted: [W]=WARN
[   23.237292][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.237769][ 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) 
[ 23.238115][ T343] 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
[   23.239236][  T343] RSP: 0018:ffffc900005e6ef0 EFLAGS: 00010246
[   23.239633][  T343] RAX: 0000000000000000 RBX: ffff888004f6a000 RCX: 0000000000000001
[   23.240123][  T343] RDX: 0000000000000000 RSI: ffffffff89e9b939 RDI: ffffffff896555e0
[   23.240583][  T343] RBP: ffffc900005e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.241062][  T343] R10: ffffc900005e7010 R11: ffffffff8aca8918 R12: 1ffff920000bcde2
[   23.241548][  T343] R13: 00000000000005dc R14: ffffc900005e7010 R15: ffff888004f6af08
[   23.242079][  T343] FS:  00007fcba152d800(0000) GS:ffff8880aa437000(0000) knlGS:0000000000000000
[   23.242635][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.243044][  T343] CR2: 00000000004e5ab0 CR3: 000000001193e004 CR4: 0000000000772ef0
[   23.243564][  T343] PKRU: 55555554
[   23.243810][  T343] Call Trace:
[   23.244040][  T343]  <TASK>
[ 23.244202][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.244526][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.244904][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.245229][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.245660][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.245998][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.246318][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.246640][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.247120][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.247360][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.247791][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.248150][ T343] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.248506][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.248848][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.249240][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.249561][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.249933][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.250260][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.250579][ 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) 
[ 23.250930][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.251311][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.251619][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.251941][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.252258][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.252566][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.252932][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.253245][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.253574][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.253927][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.254236][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.254636][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.254961][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.255293][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.255638][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.255981][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.256298][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.256605][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.256935][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.257241][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.257550][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.257937][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.258280][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.258598][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.258923][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.259378][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.259821][ 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) 
[ 23.260163][ T343] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.260476][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.260858][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.261184][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.261507][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.261860][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.262179][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.262491][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.262817][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.263243][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.263568][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.263889][ 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) 
[ 23.264288][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.264596][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.264929][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.265335][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.265723][ 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) 
[ 23.266057][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.266381][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.266740][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.267129][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.267446][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.267763][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.268103][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.268610][  T343] RIP: 0033:0x7fcba16fa1e7
[ 23.268940][ 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)
[   23.270108][  T343] RSP: 002b:00007fffa55ffc58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.270616][  T343] RAX: ffffffffffffffda RBX: 00007fffa5600380 RCX: 00007fcba16fa1e7
[   23.271111][  T343] RDX: 0000000000000000 RSI: 00007fffa55ffcc0 RDI: 0000000000000005
[   23.271578][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.272047][  T343] R10: 0000000021a0e910 R11: 0000000000000246 R12: 0000000000000004
[   23.272506][  T343] R13: 00000000686e73eb R14: 0000000000499600 R15: 0000000000000000
| [   23.770278][  T346] ------------[ cut here ]------------
| [ 23.770681][ 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) 
| [   23.771326][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.773057][  T346] Tainted: [W]=WARN
[   23.773381][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.773828][ 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) 
[ 23.774237][ T346] 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
[   23.775424][  T346] RSP: 0018:ffffc90000617000 EFLAGS: 00010246
[   23.775864][  T346] RAX: 0000000000000000 RBX: ffff888004d01000 RCX: 0000000000000001
[   23.776327][  T346] RDX: 0000000000000000 RSI: ffffffff89e9b939 RDI: ffffffff896555e0
[   23.776834][  T346] RBP: ffffc900006170e8 R08: ffff888004d01218 R09: 0000000000000000
[   23.777317][  T346] R10: ffffc90000617118 R11: ffffffff8a379160 R12: 1ffff920000c2e04
[   23.777880][  T346] R13: 00000000000005b6 R14: ffffc90000617118 R15: ffff888004d01218
[   23.778510][  T346] FS:  00007f6821ddb800(0000) GS:ffff8880aa437000(0000) knlGS:0000000000000000
[   23.779496][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.780257][  T346] CR2: 0000000000436890 CR3: 0000000005033006 CR4: 0000000000772ef0
[   23.781120][  T346] PKRU: 55555554
[   23.781544][  T346] Call Trace:
[   23.782011][  T346]  <TASK>
[ 23.782351][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.783119][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.783712][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.784317][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.784890][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.785426][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.785884][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.786248][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.786602][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.786948][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.787287][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.787632][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.788003][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.788416][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.788820][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.789139][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.789463][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.789829][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.790143][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.790468][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.790862][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.791201][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.791543][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.792027][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.792356][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.792722][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.793057][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.793377][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.793760][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.794141][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.794465][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.794836][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.795178][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.795543][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.795906][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.796294][ 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) 
[ 23.796660][ T346] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.796989][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.797321][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.797691][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.798015][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.798322][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.798688][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.799018][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.799382][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.799836][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.800198][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.800525][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.800970][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.801321][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.801632][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.801991][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.802351][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.802740][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.803091][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.803430][ 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) 
[ 23.803785][ 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) 
[ 23.804102][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.804460][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.804856][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.805285][  T346] RIP: 0033:0x7f6821fa81e7
[ 23.805754][ 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)
[   23.806944][  T346] RSP: 002b:00007fff1b22e4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.807463][  T346] RAX: ffffffffffffffda RBX: 00007fff1b22ebd0 RCX: 00007f6821fa81e7
[   23.807969][  T346] RDX: 0000000000000000 RSI: 00007fff1b22e510 RDI: 0000000000000005
[   23.808454][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.808958][  T346] R10: 00007f6821ea06f8 R11: 0000000000000246 R12: 00007fff1b22ebf0


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