======================================
| [   20.298393][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.366082][  T313] ------------[ cut here ]------------
| [ 20.366580][ T313] WARNING: CPU: 2 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) 
| [   20.367355][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.368457][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.368889][ 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) 
[ 20.369245][ T313] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.370441][  T313] RSP: 0018:ffffc90000567000 EFLAGS: 00010246
[   20.370883][  T313] RAX: 0000000000000000 RBX: ffff88800542c000 RCX: 0000000000000001
[   20.371385][  T313] RDX: 0000000000000000 RSI: ffffffff9069b939 RDI: ffffffff8fe555e0
[   20.371915][  T313] RBP: ffffc900005670e8 R08: ffff88800542c218 R09: 0000000000000000
[   20.372421][  T313] R10: ffffc90000567118 R11: ffffffff90b79160 R12: 1ffff920000ace04
[   20.372931][  T313] R13: 00000000000005b6 R14: ffffc90000567118 R15: ffff88800542c218
[   20.373434][  T313] FS:  00007f35734b8800(0000) GS:ffff8880a3bb7000(0000) knlGS:0000000000000000
[   20.374019][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.374629][  T313] CR2: 0000000000436890 CR3: 000000000c78c002 CR4: 0000000000772ef0
[   20.375177][  T313] PKRU: 55555554
[   20.375476][  T313] Call Trace:
[   20.375754][  T313]  <TASK>
[ 20.376008][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.376440][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.376798][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.377145][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.377505][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.377864][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.378209][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.378563][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.378909][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.379171][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.379517][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.379869][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.380208][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.380623][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.380977][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.381312][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.381656][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.381995][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.382329][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.382669][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.383022][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.383355][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.383695][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.384059][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.384397][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.384741][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.385082][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.385445][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.385784][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.386130][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.386472][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.386818][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.387161][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.387503][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.387856][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.388196][ 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) 
[ 20.388534][ T313] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.388880][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.389212][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.389555][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.389904][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.390242][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.390603][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.390957][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.391295][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.391725][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.392072][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.392407][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.392757][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.393101][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.393454][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.393798][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.394131][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.394488][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.394831][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.395169][ 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) 
[ 20.395551][ 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) 
[ 20.395902][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.396247][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.396584][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.397017][  T313] RIP: 0033:0x7f35736851e7
[ 20.397380][ T313] Code: Unable to access opcode bytes at 0x7f35736851bd.

Code starting with the faulting instruction
===========================================
[   20.397823][  T313] RSP: 002b:00007fffc3733ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.398329][  T313] RAX: ffffffffffffffda RBX: 00007fffc3734210 RCX: 00007f35736851e7
[   20.398853][  T313] RDX: 0000000000000000 RSI: 00007fffc3733b50 RDI: 0000000000000005
[   20.399358][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.399867][  T313] R10: 00007f357357d6f8 R11: 0000000000000246 R12: 00007fffc3734230
[   20.400375][  T313] R13: 00000000686e71a9 R14: 0000000000499600 R15: 00007fffc3733c3c
| [   23.299727][  T341] ------------[ cut here ]------------
| [ 23.300091][ T341] WARNING: CPU: 3 PID: 341 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.300728][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.302737][  T341] Tainted: [W]=WARN
[   23.302998][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.303420][ 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) 
[ 23.303737][ T341] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.304990][  T341] RSP: 0018:ffffc900004e6ef0 EFLAGS: 00010246
[   23.305413][  T341] RAX: 0000000000000000 RBX: ffff8880057e2000 RCX: 0000000000000001
[   23.305917][  T341] RDX: 0000000000000000 RSI: ffffffff9069b939 RDI: ffffffff8fe555e0
[   23.306392][  T341] RBP: ffffc900004e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.306881][  T341] R10: ffffc900004e7010 R11: ffffffff914a8918 R12: 1ffff9200009cde2
[   23.307355][  T341] R13: 00000000000005dc R14: ffffc900004e7010 R15: ffff8880057e2f08
[   23.307858][  T341] FS:  00007fed60cff800(0000) GS:ffff8880a3c37000(0000) knlGS:0000000000000000
[   23.308411][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.308833][  T341] CR2: 00000000004e5aa8 CR3: 000000000af2e004 CR4: 0000000000772ef0
[   23.309316][  T341] PKRU: 55555554
[   23.309556][  T341] Call Trace:
[   23.309825][  T341]  <TASK>
[ 23.310002][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.310325][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.310651][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.310981][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.311382][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.311702][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.312032][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.312370][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.312827][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.313065][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.313505][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.313877][ T341] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.314199][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.314523][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.314943][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.315266][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.315606][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.315946][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.316272][ 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) 
[ 23.316594][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.317015][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.317340][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.317660][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.317991][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.318309][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.318631][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.318960][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.319288][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.319614][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.319951][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.320348][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.320674][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.321020][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.321342][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.321668][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.321997][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.322321][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.322648][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.322978][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.323302][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.323627][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.323965][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.324283][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.324612][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.324969][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.325290][ 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) 
[ 23.325621][ T341] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.325957][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.326275][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.326605][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.326947][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.327269][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.327598][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.327930][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.328251][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.328664][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.329005][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.329333][ 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) 
[ 23.329728][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.330058][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.330386][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.330713][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.331044][ 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) 
[ 23.331369][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.331699][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.332032][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.332440][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.332780][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.333129][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.333453][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.333865][  T341] RIP: 0033:0x7fed60ecc1e7
[ 23.334196][ 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)
[   23.335360][  T341] RSP: 002b:00007ffea86a3218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.335864][  T341] RAX: ffffffffffffffda RBX: 00007ffea86a3940 RCX: 00007fed60ecc1e7
[   23.336341][  T341] RDX: 0000000000000000 RSI: 00007ffea86a3280 RDI: 0000000000000005
[   23.336840][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.337321][  T341] R10: 0000000004f17910 R11: 0000000000000246 R12: 0000000000000004
[   23.337820][  T341] R13: 00000000686e71ac R14: 0000000000499600 R15: 0000000000000000
| [   23.567232][  T344] ------------[ cut here ]------------
| [ 23.567583][ T344] WARNING: CPU: 0 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.568244][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.569639][  T344] Tainted: [W]=WARN
[   23.571042][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.571489][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.571833][ T344] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.572985][  T344] RSP: 0018:ffffc90000936ef0 EFLAGS: 00010246
[   23.573392][  T344] RAX: 0000000000000000 RBX: ffff8880057e2000 RCX: 0000000000000001
[   23.573877][  T344] RDX: 0000000000000000 RSI: ffffffff9069b939 RDI: ffffffff8fe555e0
[   23.574349][  T344] RBP: ffffc90000936fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.574836][  T344] R10: ffffc90000937010 R11: ffffffff914a8918 R12: 1ffff92000126de2
[   23.575461][  T344] R13: 00000000000005dc R14: ffffc90000937010 R15: ffff8880057e2f08
[   23.576239][  T344] FS:  00007f663cb04800(0000) GS:ffff8880a3ab7000(0000) knlGS:0000000000000000
[   23.577218][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.577948][  T344] CR2: 00000000004e5ab0 CR3: 000000000ca3a001 CR4: 0000000000772ef0
[   23.578823][  T344] PKRU: 55555554
[   23.579239][  T344] Call Trace:
[   23.579655][  T344]  <TASK>
[ 23.579880][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.580242][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.580570][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.580915][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.581418][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.581751][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.582094][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.582443][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.582900][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.583153][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.583593][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.583973][ T344] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.584341][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.584669][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.585101][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.585464][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.585806][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.586146][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.586476][ T344] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.586819][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.587231][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.587556][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.587893][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.588244][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.588570][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.588939][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.589389][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 23.589975][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.590319][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.590645][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.591054][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.591394][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.591722][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.592055][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.592419][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.592741][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.593086][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.593427][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.593750][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.594083][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.594420][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.594747][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.595088][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.595436][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.595769][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.596099][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.596453][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.596779][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.597141][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.597488][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.597828][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.598157][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.598491][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.598830][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.599159][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.599569][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.599908][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.600257][ T344] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.600664][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.601001][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.601344][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.601672][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.602013][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.602355][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.602683][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.603016][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.603451][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.603798][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.604135][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.604522][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.604952][  T344] RIP: 0033:0x7f663ccd11e7
[ 23.605287][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.606405][  T344] RSP: 002b:00007ffc0ac11ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.606875][  T344] RAX: ffffffffffffffda RBX: 00007ffc0ac12200 RCX: 00007f663ccd11e7
[   23.607371][  T344] RDX: 0000000000000000 RSI: 00007ffc0ac11b40 RDI: 0000000000000005
[   23.607842][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.608301][  T344] R10: 0000000015c6f910 R11: 0000000000000246 R12: 0000000000000004
[   23.608758][  T344] R13: 00000000686e71ad R14: 0000000000499600 R15: 0000000000000000
| [   24.002072][  T347] ------------[ cut here ]------------
| [ 24.002408][ T347] WARNING: CPU: 3 PID: 347 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) 
| [   24.003037][  T347] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.004388][  T347] Tainted: [W]=WARN
[   24.004625][  T347] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.005017][ T347] 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) 
[ 24.005338][ T347] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   24.006471][  T347] RSP: 0018:ffffc900005d7000 EFLAGS: 00010246
[   24.007914][  T347] RAX: 0000000000000000 RBX: ffff88800c4c9000 RCX: 0000000000000001
[   24.008382][  T347] RDX: 0000000000000000 RSI: ffffffff9069b939 RDI: ffffffff8fe555e0
[   24.008849][  T347] RBP: ffffc900005d70e8 R08: ffff88800c4c9218 R09: 0000000000000000
[   24.009314][  T347] R10: ffffc900005d7118 R11: ffffffff90b79160 R12: 1ffff920000bae04
[   24.009773][  T347] R13: 00000000000005b6 R14: ffffc900005d7118 R15: ffff88800c4c9218
[   24.010239][  T347] FS:  00007f0658b1e800(0000) GS:ffff8880a3c37000(0000) knlGS:0000000000000000
[   24.010772][  T347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.011221][  T347] CR2: 0000000000436890 CR3: 00000000090f5005 CR4: 0000000000772ef0
[   24.011683][  T347] PKRU: 55555554
[   24.011927][  T347] Call Trace:
[   24.012158][  T347]  <TASK>
[ 24.012314][ T347] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.012698][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.013020][ T347] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.013328][ T347] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.013637][ T347] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.013954][ T347] netif_set_mtu (net/core/dev.c:9652) 
[ 24.014260][ T347] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.014578][ T347] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.014893][ T347] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.015127][ T347] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.015446][ T347] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.015766][ T347] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.016114][ T347] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.016494][ T347] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.016818][ T347] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.017124][ T347] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 24.017433][ T347] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.017734][ T347] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.018051][ T347] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.018357][ T347] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.018665][ T347] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.018973][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.019284][ T347] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.019596][ T347] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.019917][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.020232][ T347] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.020538][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.020881][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.021187][ T347] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.021492][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.021809][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.022121][ T347] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.022427][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.022737][ T347] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.023063][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.023367][ T347] ? 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) 
[ 24.023674][ T347] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.023992][ T347] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.024300][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.024608][ T347] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.024948][ T347] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.025260][ T347] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.025584][ T347] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.025930][ T347] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.026238][ T347] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.026626][ T347] ___sys_sendmsg (net/socket.c:2670) 
[ 24.026942][ T347] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.027252][ T347] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.027565][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.027876][ T347] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.028185][ T347] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.028491][ T347] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.028838][ T347] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.029160][ T347] __sys_sendmsg (net/socket.c:2700) 
[ 24.029480][ T347] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.029800][ T347] ? 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) 
[ 24.030155][ T347] ? 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) 
[ 24.030466][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.030775][ T347] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.031095][ T347] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.031474][  T347] RIP: 0033:0x7f0658ceb1e7
[ 24.031807][ T347] 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)
[   24.032897][  T347] RSP: 002b:00007ffdfebaf808 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.033356][  T347] RAX: ffffffffffffffda RBX: 00007ffdfebaff30 RCX: 00007f0658ceb1e7
[   24.033828][  T347] RDX: 0000000000000000 RSI: 00007ffdfebaf870 RDI: 0000000000000005
[   24.034284][  T347] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.034742][  T347] R10: 00007f0658be36f8 R11: 0000000000000246 R12: 00007ffdfebaff50
[   24.035273][  T347] R13: 00000000686e71ad R14: 0000000000499600 R15: 00007ffdfebaf958
| [   24.999753][  T359] ------------[ cut here ]------------
| [ 25.000115][ T359] WARNING: CPU: 2 PID: 359 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) 
| [   25.000734][  T359] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   25.003541][  T359] Tainted: [W]=WARN
[   25.003804][  T359] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.004204][ T359] 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) 
[ 25.004538][ T359] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   25.005671][  T359] RSP: 0018:ffffc90000596ef0 EFLAGS: 00010246
[   25.006078][  T359] RAX: 0000000000000000 RBX: ffff888009b02000 RCX: 0000000000000001
[   25.006554][  T359] RDX: 0000000000000000 RSI: ffffffff9069b939 RDI: ffffffff8fe555e0
[   25.007039][  T359] RBP: ffffc90000596fe0 R08: 0000000000000000 R09: 0000000000000000
[   25.007509][  T359] R10: ffffc90000597010 R11: ffffffff914a8918 R12: 1ffff920000b2de2
[   25.008029][  T359] R13: 00000000000005dc R14: ffffc90000597010 R15: ffff888009b02f08
[   25.008508][  T359] FS:  00007f7cf8ea8800(0000) GS:ffff8880a3bb7000(0000) knlGS:0000000000000000
[   25.009075][  T359] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.009481][  T359] CR2: 00000000004e5ac0 CR3: 000000000c12d005 CR4: 0000000000772ef0
[   25.009963][  T359] PKRU: 55555554
[   25.010214][  T359] Call Trace:
[   25.010466][  T359]  <TASK>
[ 25.010645][ T359] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.010979][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.011309][ T359] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 25.011623][ T359] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 25.012030][ T359] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 25.012356][ T359] netif_set_mtu (net/core/dev.c:9652) 
[ 25.012682][ T359] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.013035][ T359] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 25.013488][ T359] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.013735][ T359] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 25.014178][ T359] br_add_if (net/bridge/br_if.c:697) bridge 
[ 25.014541][ T359] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 25.014903][ T359] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 25.015232][ T359] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 25.015681][ T359] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.016015][ T359] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 25.016335][ T359] ? __kernel_text_address (kernel/extable.c:79) 
[ 25.016655][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.016985][ T359] ? __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) 
[ 25.017305][ T359] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 25.017706][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.018037][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.018357][ T359] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 25.018681][ T359] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 25.019039][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.019361][ T359] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.019675][ T359] ? __create_object (mm/kmemleak.c:771) 
[ 25.020006][ T359] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 25.020328][ T359] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 25.020644][ T359] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 25.021048][ T359] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 25.021377][ T359] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.021699][ T359] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.022026][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.022350][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.022665][ T359] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.023032][ T359] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.023365][ T359] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.023695][ T359] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.024039][ T359] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.024372][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.024698][ T359] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.025035][ T359] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.025380][ T359] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.025715][ T359] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.026045][ T359] ? 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) 
[ 25.026370][ T359] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.026700][ T359] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.027039][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.027367][ T359] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.027709][ T359] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.028051][ T359] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.028382][ T359] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.028714][ T359] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.029054][ T359] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.029458][ T359] ___sys_sendmsg (net/socket.c:2670) 
[ 25.029799][ T359] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 25.030125][ T359] ? __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) 
[ 25.030522][ T359] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.030864][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.031195][ T359] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.031523][ T359] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.031858][ T359] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 25.032190][ T359] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.032524][ T359] __sys_sendmsg (net/socket.c:2700) 
[ 25.032853][ T359] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 25.033255][ T359] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.033583][ T359] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.033924][ T359] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.034245][ T359] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.034651][  T359] RIP: 0033:0x7f7cf90751e7
[ 25.034994][ T359] 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)
[   25.036142][  T359] RSP: 002b:00007ffee26787d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.036627][  T359] RAX: ffffffffffffffda RBX: 00007ffee2678f00 RCX: 00007f7cf90751e7
[   25.037122][  T359] RDX: 0000000000000000 RSI: 00007ffee2678840 RDI: 0000000000000005
[   25.037601][  T359] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   25.038084][  T359] R10: 00000000363e6910 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