======================================
| [   20.261955][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.324858][  T313] ------------[ cut here ]------------
| [ 20.326283][ T313] WARNING: CPU: 3 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) 
| [   20.326933][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.328024][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.328439][ 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) 
[ 20.328808][ 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
[   20.329985][  T313] RSP: 0018:ffffc90000557000 EFLAGS: 00010246
[   20.330401][  T313] RAX: 0000000000000000 RBX: ffff88800d719000 RCX: 0000000000000001
[   20.330889][  T313] RDX: 0000000000000000 RSI: ffffffff9d29b941 RDI: ffffffff9ca555e0
[   20.331398][  T313] RBP: ffffc900005570e8 R08: ffff88800d719218 R09: 0000000000000000
[   20.331882][  T313] R10: ffffc90000557118 R11: ffffffff9d779160 R12: 1ffff920000aae04
[   20.332390][  T313] R13: 00000000000005b6 R14: ffffc90000557118 R15: ffff88800d719218
[   20.332896][  T313] FS:  00007f6c23cee800(0000) GS:ffff888097037000(0000) knlGS:0000000000000000
[   20.333466][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.333880][  T313] CR2: 00007fa2feea1000 CR3: 000000000e686003 CR4: 0000000000772ef0
[   20.334380][  T313] PKRU: 55555554
[   20.334630][  T313] Call Trace:
[   20.334877][  T313]  <TASK>
[ 20.335044][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.338657][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.338999][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.339346][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.339870][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.340223][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.340565][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.340918][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.341250][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.341507][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.341826][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.342151][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.342490][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.342912][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.343249][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.343570][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.343913][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.344239][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.344564][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.344888][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.345211][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.345537][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.345879][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.346211][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.346794][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.347127][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.347457][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.347788][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.348110][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.348449][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.348773][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.349099][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.349435][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.349760][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.350100][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.350442][ 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) 
[ 20.350990][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.351983][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.353724][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.354316][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.354647][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.354984][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.355337][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.355694][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.356011][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.356465][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.356800][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.357133][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.357479][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.357800][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.358589][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.358906][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.359238][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.359833][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.360172][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.360505][ 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) 
[ 20.360833][ 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) 
[ 20.361178][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.361508][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.362037][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.362450][  T313] RIP: 0033:0x7f6c23ebb1e7
[ 20.362809][ T313] Code: Unable to access opcode bytes at 0x7f6c23ebb1bd.

Code starting with the faulting instruction
===========================================
[   20.363221][  T313] RSP: 002b:00007fff11426c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.363714][  T313] RAX: ffffffffffffffda RBX: 00007fff11427330 RCX: 00007f6c23ebb1e7
[   20.364436][  T313] RDX: 0000000000000000 RSI: 00007fff11426c70 RDI: 0000000000000005
[   20.364930][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.365416][  T313] R10: 00007f6c23db36f8 R11: 0000000000000246 R12: 00007fff11427350
[   20.365890][  T313] R13: 00000000686e44dd R14: 0000000000499600 R15: 00007fff11426d5c
| [   23.256397][  T341] ------------[ cut here ]------------
| [ 23.256732][ T341] WARNING: CPU: 0 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) 
| [   23.257352][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.260361][  T341] Tainted: [W]=WARN
[   23.260627][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.261007][ 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) 
[ 23.261339][ 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
[   23.262769][  T341] RSP: 0018:ffffc900006b6ef0 EFLAGS: 00010246
[   23.263318][  T341] RAX: 0000000000000000 RBX: ffff8880050da000 RCX: 0000000000000001
[   23.263891][  T341] RDX: 0000000000000000 RSI: ffffffff9d29b941 RDI: ffffffff9ca555e0
[   23.264421][  T341] RBP: ffffc900006b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.264996][  T341] R10: ffffc900006b7010 R11: ffffffff9e0a8918 R12: 1ffff920000d6de2
[   23.265481][  T341] R13: 00000000000005dc R14: ffffc900006b7010 R15: ffff8880050daf08
[   23.266059][  T341] FS:  00007f7df577b800(0000) GS:ffff888096eb7000(0000) knlGS:0000000000000000
[   23.266676][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.267112][  T341] CR2: 00000000004e5aa8 CR3: 0000000009702002 CR4: 0000000000772ef0
[   23.267726][  T341] PKRU: 55555554
[   23.267958][  T341] Call Trace:
[   23.268188][  T341]  <TASK>
[ 23.268374][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.268708][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.269023][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.269338][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.269837][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.270156][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.270548][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.270918][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.271361][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.271749][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.272281][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.272753][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.273077][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.273488][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.273892][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.274200][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.274521][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.274867][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.275178][ 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) 
[ 23.275502][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.276005][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.276353][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.276676][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.276982][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.277302][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.277621][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.277940][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.278270][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.278608][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.278918][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.279307][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.279635][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.279946][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.280263][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.280598][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.280903][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.281207][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.281532][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.281850][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.282156][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.282473][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.282822][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.283139][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.283454][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.283800][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.284101][ 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) 
[ 23.284418][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.284844][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.285157][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.285484][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.285800][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.286106][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.286431][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.286743][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.287051][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.287453][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.287789][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.288097][ 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) 
[ 23.288493][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.288803][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.289113][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.289437][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.289748][ 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) 
[ 23.290060][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.290383][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.290686][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.291064][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.291388][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.291739][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.292049][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.292450][  T341] RIP: 0033:0x7f7df59481e7
[ 23.292781][ 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)
[   23.294032][  T341] RSP: 002b:00007ffec4e6f8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.294515][  T341] RAX: ffffffffffffffda RBX: 00007ffec4e70020 RCX: 00007f7df59481e7
[   23.295046][  T341] RDX: 0000000000000000 RSI: 00007ffec4e6f960 RDI: 0000000000000005
[   23.295635][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.296244][  T341] R10: 00000000160de910 R11: 0000000000000246 R12: 0000000000000004
[   23.296875][  T341] R13: 00000000686e44e1 R14: 0000000000499600 R15: 0000000000000000
| [   23.542055][  T343] ------------[ cut here ]------------
| [ 23.543009][ T343] WARNING: CPU: 2 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) 
| [   23.543690][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.545073][  T343] Tainted: [W]=WARN
[   23.545368][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.545776][ 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) 
[ 23.546105][ 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
[   23.547268][  T343] RSP: 0018:ffffc90000696ef0 EFLAGS: 00010246
[   23.547707][  T343] RAX: 0000000000000000 RBX: ffff8880050da000 RCX: 0000000000000001
[   23.548187][  T343] RDX: 0000000000000000 RSI: ffffffff9d29b941 RDI: ffffffff9ca555e0
[   23.548682][  T343] RBP: ffffc90000696fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.549154][  T343] R10: ffffc90000697010 R11: ffffffff9e0a8918 R12: 1ffff920000d2de2
[   23.549670][  T343] R13: 00000000000005dc R14: ffffc90000697010 R15: ffff8880050daf08
[   23.550147][  T343] FS:  00007f4b0de53800(0000) GS:ffff888096fb7000(0000) knlGS:0000000000000000
[   23.550719][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.551128][  T343] CR2: 00000000004e5ab0 CR3: 000000000d464002 CR4: 0000000000772ef0
[   23.551641][  T343] PKRU: 55555554
[   23.551902][  T343] Call Trace:
[   23.552155][  T343]  <TASK>
[ 23.552346][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.552688][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.553023][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.553374][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.553771][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.554094][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.554465][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.554806][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.555293][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.555546][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.555996][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.556391][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.556716][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.557049][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.557474][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.557805][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.558123][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.558480][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.558811][ 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) 
[ 23.559142][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.559565][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.559898][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.560217][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.560546][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.560865][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.561184][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.561555][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.561903][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.562245][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.562580][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.562987][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.563331][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.563655][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.563973][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.564328][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.564667][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.564981][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.565357][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.565678][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.566009][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.566360][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.566685][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.567018][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.567357][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.567691][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.568031][ 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) 
[ 23.568373][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.568708][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.569026][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.569394][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.569724][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.570042][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.570382][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.570705][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.571021][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.571443][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.571760][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.572084][ 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) 
[ 23.572544][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.572871][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.573193][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.573575][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.573911][ 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) 
[ 23.574239][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.574603][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.574937][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.575358][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.575687][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.576023][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.576356][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.576750][  T343] RIP: 0033:0x7f4b0e0201e7
[ 23.577089][ 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)
[   23.578245][  T343] RSP: 002b:00007ffeae56e8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.578761][  T343] RAX: ffffffffffffffda RBX: 00007ffeae56f020 RCX: 00007f4b0e0201e7
[   23.579269][  T343] RDX: 0000000000000000 RSI: 00007ffeae56e960 RDI: 0000000000000005
[   23.579756][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.580238][  T343] R10: 000000003c4fc910 R11: 0000000000000246 R12: 0000000000000004
[   23.580710][  T343] R13: 00000000686e44e1 R14: 0000000000499600 R15: 0000000000000000
| [   23.995119][  T346] ------------[ cut here ]------------
| [ 23.996028][ 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) 
| [   23.996708][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.998148][  T346] Tainted: [W]=WARN
[   23.998408][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.998820][ 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) 
[ 23.999167][ 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
[   24.000340][  T346] RSP: 0018:ffffc90000957000 EFLAGS: 00010246
[   24.000757][  T346] RAX: 0000000000000000 RBX: ffff8880077c1000 RCX: 0000000000000001
[   24.001254][  T346] RDX: 0000000000000000 RSI: ffffffff9d29b941 RDI: ffffffff9ca555e0
[   24.001728][  T346] RBP: ffffc900009570e8 R08: ffff8880077c1218 R09: 0000000000000000
[   24.002200][  T346] R10: ffffc90000957118 R11: ffffffff9d779160 R12: 1ffff9200012ae04
[   24.002691][  T346] R13: 00000000000005b6 R14: ffffc90000957118 R15: ffff8880077c1218
[   24.003164][  T346] FS:  00007fbdc0c17800(0000) GS:ffff888097037000(0000) knlGS:0000000000000000
[   24.003731][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.004132][  T346] CR2: 0000000000436890 CR3: 000000000edd5002 CR4: 0000000000772ef0
[   24.004633][  T346] PKRU: 55555554
[   24.004874][  T346] Call Trace:
[   24.005110][  T346]  <TASK>
[ 24.005282][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.005686][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.006009][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.006342][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.006660][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.006986][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 24.007330][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.007659][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.007979][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.008218][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.008564][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.008888][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.009212][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.009619][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.009945][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.010277][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.010597][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.010910][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.011239][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.011564][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.011885][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.012194][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.012550][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.012880][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.013199][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.013536][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.013850][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.014167][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.014489][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.014807][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.015125][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.015457][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.015776][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.016091][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.016438][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.016753][ 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) 
[ 24.017070][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.017402][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.017723][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.018049][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.018387][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.018721][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.019046][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.019382][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.019696][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.020109][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 24.020454][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.020769][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.021087][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.021415][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.021736][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.022055][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.022386][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.022724][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 24.023038][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.023366][ 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) 
[ 24.023689][ 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) 
[ 24.024033][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.024402][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.024722][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.025112][  T346] RIP: 0033:0x7fbdc0de41e7
[ 24.025452][ 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)
[   24.026591][  T346] RSP: 002b:00007ffedb025028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.027070][  T346] RAX: ffffffffffffffda RBX: 00007ffedb025750 RCX: 00007fbdc0de41e7
[   24.027558][  T346] RDX: 0000000000000000 RSI: 00007ffedb025090 RDI: 0000000000000005
[   24.028028][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.028548][  T346] R10: 00007fbdc0cdc6f8 R11: 0000000000000246 R12: 00007ffedb025770
[   24.029024][  T346] R13: 00000000686e44e1 R14: 0000000000499600 R15: 00007ffedb025178
| [  130.848042][  T786] ------------[ cut here ]------------
| [ 130.848394][ T786] WARNING: CPU: 3 PID: 786 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) 
| [  130.849005][  T786] Modules linked in: act_mirred cls_flower bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [  130.850521][  T786] Tainted: [W]=WARN
[  130.850759][  T786] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 130.851147][ T786] 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) 
[ 130.851476][ T786] 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
[  130.852588][  T786] RSP: 0018:ffffc9000161f000 EFLAGS: 00010246
[  130.852986][  T786] RAX: 0000000000000000 RBX: ffff888009b7c000 RCX: 0000000000000001
[  130.853474][  T786] RDX: 0000000000000000 RSI: ffffffff9d29b941 RDI: ffffffff9ca555e0
[  130.853933][  T786] RBP: ffffc9000161f0e8 R08: ffff888009b7c218 R09: 0000000000000000
[  130.854401][  T786] R10: ffffc9000161f118 R11: ffffffff99600130 R12: 1ffff920002c3e04
[  130.854853][  T786] R13: 00000000000005b6 R14: ffffc9000161f118 R15: ffff888009b7c218
[  130.855322][  T786] FS:  00007fe04326d800(0000) GS:ffff888097037000(0000) knlGS:0000000000000000
[  130.855858][  T786] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.856253][  T786] CR2: 0000000000436890 CR3: 000000000c2f0004 CR4: 0000000000772ef0
[  130.856712][  T786] PKRU: 55555554
[  130.856947][  T786] Call Trace:
[  130.857174][  T786]  <TASK>
[ 130.857343][ T786] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 130.857723][ T786] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 130.858029][ T786] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 130.858342][ T786] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 130.858659][ T786] netif_set_mtu (net/core/dev.c:9652) 
[ 130.858966][ T786] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 130.859291][ T786] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 130.859600][ T786] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 130.859829][ T786] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 130.860132][ T786] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 130.860457][ T786] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 130.860766][ T786] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 130.861142][ T786] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 130.861463][ T786] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 130.861774][ T786] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 130.862078][ T786] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 130.862386][ T786] ? __dev_get_by_name (net/core/dev.c:865) 
[ 130.862721][ T786] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 130.863025][ T786] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 130.863342][ T786] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 130.863644][ T786] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 130.863955][ T786] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 130.864288][ T786] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 130.864599][ T786] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 130.864914][ T786] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 130.865213][ T786] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 130.865528][ T786] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 130.865831][ T786] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 130.866134][ T786] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 130.866455][ T786] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 130.866766][ T786] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 130.867073][ T786] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 130.867384][ T786] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 130.867700][ T786] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 130.868003][ T786] ? 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) 
[ 130.868317][ T786] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 130.868627][ T786] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 130.868930][ T786] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 130.869249][ T786] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 130.869556][ T786] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 130.869859][ T786] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 130.870180][ T786] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 130.870497][ T786] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 130.870800][ T786] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 130.871197][ T786] ___sys_sendmsg (net/socket.c:2670) 
[ 130.871513][ T786] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 130.871816][ T786] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 130.872124][ T786] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 130.872447][ T786] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 130.872767][ T786] ? __handle_mm_fault (mm/memory.c:6212) 
[ 130.873081][ T786] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 130.873390][ T786] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 130.873710][ T786] __sys_sendmsg (net/socket.c:2700) 
[ 130.874013][ T786] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 130.874327][ T786] ? 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) 
[ 130.874646][ T786] ? 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) 
[ 130.874954][ T786] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 130.875277][ T786] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 130.875582][ T786] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  130.875958][  T786] RIP: 0033:0x7fe04343a1e7
[ 130.876281][ T786] 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)
[  130.877377][  T786] RSP: 002b:00007fff25354cc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  130.877839][  T786] RAX: ffffffffffffffda RBX: 00007fff253553f0 RCX: 00007fe04343a1e7
[  130.878302][  T786] RDX: 0000000000000000 RSI: 00007fff25354d30 RDI: 0000000000000005
[  130.878761][  T786] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[  130.879216][  T786] R10: 00007fe0433326f8 R11: 0000000000000246 R12: 00007fff25355410


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