======================================
| [   20.028480][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.078269][  T313] ------------[ cut here ]------------
| [ 20.078685][ 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) 
| [   20.079324][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.082323][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.082994][ 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) 
[ 20.083314][ 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
[   20.084987][  T313] RSP: 0018:ffffc90000677000 EFLAGS: 00010246
[   20.085380][  T313] RAX: 0000000000000000 RBX: ffff88800e881000 RCX: 0000000000000001
[   20.086124][  T313] RDX: 0000000000000000 RSI: ffffffff8949b941 RDI: ffffffff88c555e0
[   20.086667][  T313] RBP: ffffc900006770e8 R08: ffff88800e881218 R09: 0000000000000000
[   20.087417][  T313] R10: ffffc90000677118 R11: ffffffff89979160 R12: 1ffff920000cee04
[   20.088163][  T313] R13: 00000000000005b6 R14: ffffc90000677118 R15: ffff88800e881218
[   20.088629][  T313] FS:  00007f0f0c392800(0000) GS:ffff8880aae37000(0000) knlGS:0000000000000000
[   20.089444][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.090027][  T313] CR2: 00007fb8af981000 CR3: 000000000de1a001 CR4: 0000000000772ef0
[   20.090908][  T313] PKRU: 55555554
[   20.091142][  T313] Call Trace:
[   20.091374][  T313]  <TASK>
[ 20.091533][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.092113][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.092421][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.092985][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.093297][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.093610][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.094064][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.094384][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.094837][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.095071][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.095380][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.095812][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.096125][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.096505][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.096829][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.097139][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.097449][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.097768][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.100955][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.101285][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.101598][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.114094][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.114415][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.114741][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.115060][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.115382][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.115689][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.116004][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.116309][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.116616][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.116933][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.117246][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.117552][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.117873][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.118191][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.118953][ 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) 
[ 20.119263][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.119573][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.120321][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.120635][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.120957][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.121260][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.121572][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.121888][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.122191][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.122580][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.122898][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.123204][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.123740][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.124047][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.124581][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.124895][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.125634][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.125966][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.126273][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.126576][ 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) 
[ 20.126898][ 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) 
[ 20.127208][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.127519][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.128272][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.128654][  T313] RIP: 0033:0x7f0f0c55f1e7
[ 20.128990][ T313] Code: Unable to access opcode bytes at 0x7f0f0c55f1bd.

Code starting with the faulting instruction
===========================================
[   20.129387][  T313] RSP: 002b:00007fffa1266008 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.129871][  T313] RAX: ffffffffffffffda RBX: 00007fffa1266730 RCX: 00007f0f0c55f1e7
[   20.130330][  T313] RDX: 0000000000000000 RSI: 00007fffa1266070 RDI: 0000000000000005
[   20.130802][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.131481][  T313] R10: 00007f0f0c4576f8 R11: 0000000000000246 R12: 00007fffa1266750
[   20.131953][  T313] R13: 00000000686e4621 R14: 0000000000499600 R15: 00007fffa126615c
| [   22.830499][  T340] ------------[ cut here ]------------
| [ 22.830878][ T340] WARNING: CPU: 2 PID: 340 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) 
| [   22.831538][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.833042][  T340] Tainted: [W]=WARN
[   22.833304][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.833738][ T340] 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) 
[ 22.834093][ T340] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.835258][  T340] RSP: 0018:ffffc900006d6ef0 EFLAGS: 00010246
[   22.835681][  T340] RAX: 0000000000000000 RBX: ffff8880051fa000 RCX: 0000000000000001
[   22.836188][  T340] RDX: 0000000000000000 RSI: ffffffff8949b941 RDI: ffffffff88c555e0
[   22.836688][  T340] RBP: ffffc900006d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.837194][  T340] R10: ffffc900006d7010 R11: ffffffff8a2a8918 R12: 1ffff920000dade2
[   22.837689][  T340] R13: 00000000000005dc R14: ffffc900006d7010 R15: ffff8880051faf08
[   22.838187][  T340] FS:  00007fb44cefe800(0000) GS:ffff8880aadb7000(0000) knlGS:0000000000000000
[   22.838774][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.839205][  T340] CR2: 00000000004e5aa8 CR3: 00000000110c7005 CR4: 0000000000772ef0
[   22.839715][  T340] PKRU: 55555554
[   22.839970][  T340] Call Trace:
[   22.840216][  T340]  <TASK>
[ 22.840396][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.840741][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.841085][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.841420][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.841847][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.842188][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 22.842527][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.842891][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.843361][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.843624][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.844093][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.844478][ T340] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.844829][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.845175][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.845582][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.845917][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.846232][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.846554][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.846891][ T340] ? __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) 
[ 22.847210][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.847600][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.847929][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.848247][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.848564][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.848891][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.849222][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.849537][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 22.849869][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.850187][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.850503][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.850913][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.851236][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.851560][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.851887][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.852212][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.852530][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.852852][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.853176][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.853491][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.853820][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.854140][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.854463][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.854795][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.855116][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.855445][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.855773][ T340] ? 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) 
[ 22.856092][ T340] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.856414][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.856761][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.857088][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.857408][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.857737][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.858064][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.858388][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.858716][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.859143][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 22.859459][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.859786][ T340] ? __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) 
[ 22.860179][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.860508][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.860841][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.861164][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.861483][ T340] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.861811][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.862138][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 22.862455][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.862873][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.863203][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.863525][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.863857][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.864246][  T340] RIP: 0033:0x7fb44d0cb1e7
[ 22.864575][ T340] 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)
[   22.865717][  T340] RSP: 002b:00007fff432a8b58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.866193][  T340] RAX: ffffffffffffffda RBX: 00007fff432a9280 RCX: 00007fb44d0cb1e7
[   22.866661][  T340] RDX: 0000000000000000 RSI: 00007fff432a8bc0 RDI: 0000000000000005
[   22.867147][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.867619][  T340] R10: 000000003e31a910 R11: 0000000000000246 R12: 0000000000000004
[   22.868102][  T340] R13: 00000000686e4624 R14: 0000000000499600 R15: 0000000000000000
| [   23.091572][  T342] ------------[ cut here ]------------
| [ 23.091916][ T342] WARNING: CPU: 2 PID: 342 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) 
| [   23.092531][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.094085][  T342] Tainted: [W]=WARN
[   23.094329][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.094735][ T342] 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) 
[ 23.095066][ T342] 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
[   23.096374][  T342] RSP: 0018:ffffc900006b6ef0 EFLAGS: 00010246
[   23.096967][  T342] RAX: 0000000000000000 RBX: ffff8880051fa000 RCX: 0000000000000001
[   23.097639][  T342] RDX: 0000000000000000 RSI: ffffffff8949b941 RDI: ffffffff88c555e0
[   23.098255][  T342] RBP: ffffc900006b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.098875][  T342] R10: ffffc900006b7010 R11: ffffffff8a2a8918 R12: 1ffff920000d6de2
[   23.099490][  T342] R13: 00000000000005dc R14: ffffc900006b7010 R15: ffff8880051faf08
[   23.100109][  T342] FS:  00007f70965d1800(0000) GS:ffff8880aadb7000(0000) knlGS:0000000000000000
[   23.100659][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.101067][  T342] CR2: 00000000004e5ab0 CR3: 000000000c037004 CR4: 0000000000772ef0
[   23.101535][  T342] PKRU: 55555554
[   23.101788][  T342] Call Trace:
[   23.102029][  T342]  <TASK>
[ 23.102201][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.102526][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.102862][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.103179][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.103574][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.103908][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.104230][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.104557][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.105018][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.105264][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.105707][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.106074][ T342] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.106405][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.106737][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.107138][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.107460][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.107789][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.108113][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.108437][ T342] ? __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) 
[ 23.108765][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.109168][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.109487][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.109818][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.110135][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.110454][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.110779][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.111097][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.111416][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.111767][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.112089][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.112481][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.112816][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.113144][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.113461][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.113795][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.114113][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.114428][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.114766][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.115084][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.115404][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.115739][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.116063][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.116379][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.116709][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.117045][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.117362][ T342] ? 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) 
[ 23.117682][ T342] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.118015][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.118332][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.118659][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.119002][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.119330][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.119654][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.119990][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.120306][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.120720][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.121036][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.121355][ T342] ? __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) 
[ 23.121762][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.122085][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.122406][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.122740][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.123058][ T342] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.123374][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.123709][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.124026][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.124421][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.124765][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.125087][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.125409][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.125809][  T342] RIP: 0033:0x7f709679e1e7
[ 23.126139][ T342] 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)
[   23.127253][  T342] RSP: 002b:00007ffd179462a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.127738][  T342] RAX: ffffffffffffffda RBX: 00007ffd179469d0 RCX: 00007f709679e1e7
[   23.128206][  T342] RDX: 0000000000000000 RSI: 00007ffd17946310 RDI: 0000000000000005
[   23.128682][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.129176][  T342] R10: 000000003b6e2910 R11: 0000000000000246 R12: 0000000000000004
[   23.129657][  T342] R13: 00000000686e4624 R14: 0000000000499600 R15: 0000000000000000
| [   23.526429][  T345] ------------[ cut here ]------------
| [ 23.526803][ T345] WARNING: CPU: 0 PID: 345 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) 
| [   23.527449][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.529122][  T345] Tainted: [W]=WARN
[   23.529365][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.529782][ T345] 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) 
[ 23.530105][ T345] 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
[   23.531219][  T345] RSP: 0018:ffffc90000647000 EFLAGS: 00010246
[   23.531617][  T345] RAX: 0000000000000000 RBX: ffff88800e891000 RCX: 0000000000000001
[   23.532129][  T345] RDX: 0000000000000000 RSI: ffffffff8949b941 RDI: ffffffff88c555e0
[   23.532620][  T345] RBP: ffffc900006470e8 R08: ffff88800e891218 R09: 0000000000000000
[   23.533113][  T345] R10: ffffc90000647118 R11: ffffffff89979160 R12: 1ffff920000c8e04
[   23.533596][  T345] R13: 00000000000005b6 R14: ffffc90000647118 R15: ffff88800e891218
[   23.534094][  T345] FS:  00007fc6d9a44800(0000) GS:ffff8880aacb7000(0000) knlGS:0000000000000000
[   23.534661][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.535072][  T345] CR2: 00007fc6d9c9fb78 CR3: 000000000bf4e005 CR4: 0000000000772ef0
[   23.535563][  T345] PKRU: 55555554
[   23.535819][  T345] Call Trace:
[   23.536081][  T345]  <TASK>
[ 23.536244][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.536647][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.537112][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.537436][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.537778][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.538104][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.538428][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.538768][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.539103][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.539337][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.539647][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.539977][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.540291][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.540674][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.541008][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.541331][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.541651][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.541966][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.542276][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.542595][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.542950][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.543280][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.543616][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.543960][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.544275][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.544593][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.544906][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.545216][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.545521][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.545862][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.546174][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.546487][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.546805][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.547114][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.547435][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.547763][ T345] ? 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) 
[ 23.548094][ T345] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.548405][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.548736][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.549081][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.549394][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.549715][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.550047][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.550374][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.550690][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.551115][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.551425][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.551756][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.552069][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.552390][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.552721][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.553045][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.553349][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.553686][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.554008][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.554317][ T345] ? 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) 
[ 23.554633][ T345] ? 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) 
[ 23.554977][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.555303][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.555611][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.556012][  T345] RIP: 0033:0x7fc6d9c111e7
[ 23.556338][ T345] 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)
[   23.557464][  T345] RSP: 002b:00007ffe6b81a798 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.557956][  T345] RAX: ffffffffffffffda RBX: 00007ffe6b81aec0 RCX: 00007fc6d9c111e7
[   23.558430][  T345] RDX: 0000000000000000 RSI: 00007ffe6b81a800 RDI: 0000000000000005
[   23.558908][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.559404][  T345] R10: 00007fc6d9b096f8 R11: 0000000000000246 R12: 00007ffe6b81aee0
[   23.559887][  T345] R13: 00000000686e4625 R14: 0000000000499600 R15: 00007ffe6b81a8e8
| [   24.808034][  T361] ------------[ cut here ]------------
| [ 24.808351][ T361] WARNING: CPU: 0 PID: 361 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) 
| [   24.809019][  T361] Modules linked in: 8021q bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.810492][  T361] Tainted: [W]=WARN
[   24.810737][  T361] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.811148][ T361] 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) 
[ 24.811470][ T361] 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
[   24.813739][  T361] RSP: 0018:ffffc90000ba6ef0 EFLAGS: 00010246
[   24.814141][  T361] RAX: 0000000000000000 RBX: ffff88800ffea000 RCX: 0000000000000001
[   24.814614][  T361] RDX: 0000000000000000 RSI: ffffffff8949b941 RDI: ffffffff88c555e0
[   24.815230][  T361] RBP: ffffc90000ba6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.815819][  T361] R10: ffffc90000ba7010 R11: ffffffff8a2a8918 R12: 1ffff92000174de2
[   24.816286][  T361] R13: 00000000000005dc R14: ffffc90000ba7010 R15: ffff88800ffeaf08
[   24.816770][  T361] FS:  00007f8158748800(0000) GS:ffff8880aacb7000(0000) knlGS:0000000000000000
[   24.817316][  T361] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.817716][  T361] CR2: 00000000004e6898 CR3: 00000000110d2004 CR4: 0000000000772ef0
[   24.818182][  T361] PKRU: 55555554
[   24.818417][  T361] Call Trace:
[   24.818653][  T361]  <TASK>
[ 24.818825][ T361] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.819158][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.819477][ T361] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.819798][ T361] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.820186][ T361] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.820502][ T361] netif_set_mtu (net/core/dev.c:9652) 
[ 24.820825][ T361] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.821152][ T361] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.821591][ T361] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.821841][ T361] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.822263][ T361] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.822636][ T361] do_set_master (net/core/rtnetlink.c:2948) 
[ 24.822966][ T361] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.823304][ T361] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.823720][ T361] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.824040][ T361] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.824367][ T361] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.824710][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.825037][ T361] ? __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) 
[ 24.825351][ T361] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.825765][ T361] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.826080][ T361] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.826398][ T361] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.826739][ T361] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.827054][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.827381][ T361] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.827690][ T361] ? __create_object (mm/kmemleak.c:771) 
[ 24.828022][ T361] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.828343][ T361] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.828654][ T361] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.829062][ T361] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.829398][ T361] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.829737][ T361] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.830064][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.830383][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.830718][ T361] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.831047][ T361] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.831363][ T361] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.831693][ T361] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.832039][ T361] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.832368][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.832705][ T361] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.833020][ T361] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.833347][ T361] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.833670][ T361] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.834008][ T361] ? 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) 
[ 24.834330][ T361] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.834647][ T361] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.835002][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.835321][ T361] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.835634][ T361] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.835955][ T361] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.836276][ T361] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.836596][ T361] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.836915][ T361] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.837315][ T361] ___sys_sendmsg (net/socket.c:2670) 
[ 24.837624][ T361] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.837943][ T361] ? __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) 
[ 24.838335][ T361] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.838653][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.839000][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.839321][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.839635][ T361] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.839961][ T361] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.840282][ T361] __sys_sendmsg (net/socket.c:2700) 
[ 24.840595][ T361] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.841027][ T361] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.841376][ T361] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.841720][ T361] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.842058][ T361] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.842462][  T361] RIP: 0033:0x7f81589151e7
[ 24.842824][ T361] 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)
[   24.843972][  T361] RSP: 002b:00007ffd9744e318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.844461][  T361] RAX: ffffffffffffffda RBX: 00007ffd9744ea40 RCX: 00007f81589151e7
[   24.844942][  T361] RDX: 0000000000000000 RSI: 00007ffd9744e380 RDI: 0000000000000005
[   24.845430][  T361] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.845905][  T361] R10: 0000000016274910 R11: 0000000000000246 R12: 0000000000000004


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