======================================
| [   20.166676][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.230387][  T312] ------------[ cut here ]------------
| [ 20.230899][ T312] WARNING: CPU: 0 PID: 312 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) 
| [   20.231555][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.232730][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.233141][ T312] 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) 
[ 20.233491][ T312] 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
[   20.234700][  T312] RSP: 0018:ffffc900005b7000 EFLAGS: 00010246
[   20.235126][  T312] RAX: 0000000000000000 RBX: ffff88800c139000 RCX: 0000000000000001
[   20.235646][  T312] RDX: 0000000000000000 RSI: ffffffffb549b939 RDI: ffffffffb4c555e0
[   20.236148][  T312] RBP: ffffc900005b70e8 R08: ffff88800c139218 R09: 0000000000000000
[   20.236670][  T312] R10: ffffc900005b7118 R11: ffffffffb5979160 R12: 1ffff920000b6e04
[   20.237159][  T312] R13: 00000000000005b6 R14: ffffc900005b7118 R15: ffff88800c139218
[   20.237659][  T312] FS:  00007f64b490d800(0000) GS:ffff88807ecb7000(0000) knlGS:0000000000000000
[   20.238387][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.238824][  T312] CR2: 0000564b52f015f8 CR3: 000000000c319001 CR4: 0000000000772ef0
[   20.239331][  T312] PKRU: 55555554
[   20.239578][  T312] Call Trace:
[   20.239849][  T312]  <TASK>
[ 20.240024][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.240439][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.240793][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.241129][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.241465][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.241820][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.242152][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.242489][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.242843][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.243094][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.243419][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.243764][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.244112][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.244519][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.255169][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.255506][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.255948][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.256275][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.256616][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.256941][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.257282][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.257612][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.257943][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.258285][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.258619][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.258954][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.259307][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.260345][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.260673][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.260994][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.261328][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.261663][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.261984][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.262307][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.262664][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.262979][ T312] ? 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) 
[ 20.263298][ T312] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.263639][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.263957][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.264279][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.264630][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.264959][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.265285][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.265627][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.265943][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.266347][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.266692][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.267017][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.267338][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.267676][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.268003][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.268321][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.268664][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.269003][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.270051][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.270378][ T312] ? 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) 
[ 20.270730][ T312] ? 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) 
[ 20.271064][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.271394][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.271736][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.272134][  T312] RIP: 0033:0x7f64b4ada1e7
[ 20.272480][ T312] Code: Unable to access opcode bytes at 0x7f64b4ada1bd.

Code starting with the faulting instruction
===========================================
[   20.272917][  T312] RSP: 002b:00007ffc5dd75708 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.273398][  T312] RAX: ffffffffffffffda RBX: 00007ffc5dd75e30 RCX: 00007f64b4ada1e7
[   20.274133][  T312] RDX: 0000000000000000 RSI: 00007ffc5dd75770 RDI: 0000000000000005
[   20.274870][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.275349][  T312] R10: 00007f64b49d26f8 R11: 0000000000000246 R12: 00007ffc5dd75e50
[   20.275855][  T312] R13: 00000000686e6896 R14: 0000000000499600 R15: 00007ffc5dd7585c
| [   23.181964][  T340] ------------[ cut here ]------------
| [ 23.182342][ T340] WARNING: CPU: 0 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) 
| [   23.183234][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.185163][  T340] Tainted: [W]=WARN
[   23.185420][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.186047][ 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) 
[ 23.186387][ T340] 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
[   23.187778][  T340] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   23.188222][  T340] RAX: 0000000000000000 RBX: ffff88800528a000 RCX: 0000000000000001
[   23.188861][  T340] RDX: 0000000000000000 RSI: ffffffffb549b939 RDI: ffffffffb4c555e0
[   23.189359][  T340] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.189931][  T340] R10: ffffc900005a7010 R11: ffffffffb62a8918 R12: 1ffff920000b4de2
[   23.190412][  T340] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff88800528af08
[   23.190934][  T340] FS:  00007f068fc8e800(0000) GS:ffff88807ecb7000(0000) knlGS:0000000000000000
[   23.191531][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.191958][  T340] CR2: 00000000004e5aa8 CR3: 00000000091f2003 CR4: 0000000000772ef0
[   23.192453][  T340] PKRU: 55555554
[   23.192733][  T340] Call Trace:
[   23.192999][  T340]  <TASK>
[ 23.193167][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.193513][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.193870][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.194205][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.194617][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.194972][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.195301][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.195675][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.196149][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.196397][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.196862][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.197237][ T340] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.197570][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.197910][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.198338][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.198695][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.199019][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.199374][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.199732][ 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) 
[ 23.200058][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.200457][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.200792][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.201133][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.201458][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.201819][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.202148][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.202502][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.202862][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.203186][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.203507][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.203918][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.204260][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.204603][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.204930][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.205264][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.205586][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.205919][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.206242][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.206564][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.206908][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.207236][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.207568][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.207902][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.208225][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.208558][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.208918][ 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) 
[ 23.209280][ T340] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.209625][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.209950][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.210277][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.210609][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.210930][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.211255][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.211584][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.211926][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.212337][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.212666][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.212987][ 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) 
[ 23.213392][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.213726][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.214059][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.214390][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.214723][ 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) 
[ 23.215049][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.215383][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.215713][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.216110][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.216444][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.216788][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.217119][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.217522][  T340] RIP: 0033:0x7f068fe5b1e7
[ 23.217868][ 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)
[   23.219031][  T340] RSP: 002b:00007ffd009de318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.219535][  T340] RAX: ffffffffffffffda RBX: 00007ffd009dea40 RCX: 00007f068fe5b1e7
[   23.220039][  T340] RDX: 0000000000000000 RSI: 00007ffd009de380 RDI: 0000000000000005
[   23.220523][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.221046][  T340] R10: 00000000117c9910 R11: 0000000000000246 R12: 0000000000000004
[   23.221527][  T340] R13: 00000000686e689a R14: 0000000000499600 R15: 0000000000000000
| [   23.469378][  T342] ------------[ cut here ]------------
| [ 23.469752][ T342] WARNING: CPU: 0 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) 
| [   23.470416][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.471910][  T342] Tainted: [W]=WARN
[   23.472167][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.472570][ 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) 
[ 23.473968][ T342] 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
[   23.475203][  T342] RSP: 0018:ffffc90000b86ef0 EFLAGS: 00010246
[   23.475633][  T342] RAX: 0000000000000000 RBX: ffff88800528a000 RCX: 0000000000000001
[   23.476113][  T342] RDX: 0000000000000000 RSI: ffffffffb549b939 RDI: ffffffffb4c555e0
[   23.476625][  T342] RBP: ffffc90000b86fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.477109][  T342] R10: ffffc90000b87010 R11: ffffffffb62a8918 R12: 1ffff92000170de2
[   23.477609][  T342] R13: 00000000000005dc R14: ffffc90000b87010 R15: ffff88800528af08
[   23.478091][  T342] FS:  00007fdb6c011800(0000) GS:ffff88807ecb7000(0000) knlGS:0000000000000000
[   23.478681][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.479101][  T342] CR2: 00000000004e5ab0 CR3: 00000000091f3005 CR4: 0000000000772ef0
[   23.479634][  T342] PKRU: 55555554
[   23.479876][  T342] Call Trace:
[   23.480136][  T342]  <TASK>
[ 23.480306][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.480642][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.480987][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.481313][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.481743][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.482071][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.482411][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.482768][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.483244][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.483509][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.483978][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.484365][ T342] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.484705][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.485033][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.485439][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.485772][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.486105][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.486455][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.486809][ 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) 
[ 23.487136][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.487544][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.487912][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.488236][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.488564][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.488912][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.489272][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.489611][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.489952][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.490287][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.490624][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.491040][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.491384][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.491763][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.492096][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.492424][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.492759][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.493079][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.493404][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.493733][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.494081][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.494423][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.494767][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.495110][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.495447][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.495802][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.496124][ 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) 
[ 23.496455][ T342] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.496788][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.497109][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.497450][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.497798][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.498137][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.498470][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.498822][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.499163][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.499588][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.499948][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.500273][ 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) 
[ 23.500686][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.501021][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.501357][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.501707][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.502037][ 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) 
[ 23.502374][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.502732][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.503057][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.503468][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.503842][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.504180][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.504514][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.504949][  T342] RIP: 0033:0x7fdb6c1de1e7
[ 23.505286][ 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)
[   23.506440][  T342] RSP: 002b:00007fffd72861a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.506959][  T342] RAX: ffffffffffffffda RBX: 00007fffd72868d0 RCX: 00007fdb6c1de1e7
[   23.507469][  T342] RDX: 0000000000000000 RSI: 00007fffd7286210 RDI: 0000000000000005
[   23.507986][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.508481][  T342] R10: 0000000011376910 R11: 0000000000000246 R12: 0000000000000004
[   23.508982][  T342] R13: 00000000686e689a R14: 0000000000499600 R15: 0000000000000000
| [   23.954582][  T345] ------------[ cut here ]------------
| [ 23.955512][ T345] WARNING: CPU: 2 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) 
| [   23.956197][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.957676][  T345] Tainted: [W]=WARN
[   23.957937][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.958365][ 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) 
[ 23.958725][ T345] 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
[   23.959917][  T345] RSP: 0018:ffffc90000577000 EFLAGS: 00010246
[   23.960338][  T345] RAX: 0000000000000000 RBX: ffff88800ba51000 RCX: 0000000000000001
[   23.960842][  T345] RDX: 0000000000000000 RSI: ffffffffb549b939 RDI: ffffffffb4c555e0
[   23.961341][  T345] RBP: ffffc900005770e8 R08: ffff88800ba51218 R09: 0000000000000000
[   23.961861][  T345] R10: ffffc90000577118 R11: ffffffffb5979160 R12: 1ffff920000aee04
[   23.962363][  T345] R13: 00000000000005b6 R14: ffffc90000577118 R15: ffff88800ba51218
[   23.962867][  T345] FS:  00007faf03f26800(0000) GS:ffff88807edb7000(0000) knlGS:0000000000000000
[   23.963439][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.963869][  T345] CR2: 00007fdaa2d59f10 CR3: 000000000b84c001 CR4: 0000000000772ef0
[   23.964382][  T345] PKRU: 55555554
[   23.964652][  T345] Call Trace:
[   23.964910][  T345]  <TASK>
[ 23.965090][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.965511][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.965863][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.966207][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.966552][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.966917][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 23.967258][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.967611][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.967967][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.968225][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.968564][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.968931][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.969294][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.969728][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.970081][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.970424][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.970834][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.971171][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.971509][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.971873][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.972249][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.972603][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.972949][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.973299][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.973650][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.974004][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.974344][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.974698][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.975033][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.975372][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.975724][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.976076][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.976414][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.976765][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.977122][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.977461][ 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) 
[ 23.977808][ T345] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.978155][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.978492][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.978846][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.979195][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.979538][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.979899][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.980244][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.980582][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.981021][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 23.981356][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.981701][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.982040][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.982374][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.982721][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.983054][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.983386][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.983749][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 23.984093][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.984430][ 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) 
[ 23.984784][ 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) 
[ 23.985123][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.985461][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.985808][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.986221][  T345] RIP: 0033:0x7faf040f31e7
[ 23.986570][ 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)
[   23.987775][  T345] RSP: 002b:00007ffce62f6de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.988275][  T345] RAX: ffffffffffffffda RBX: 00007ffce62f7510 RCX: 00007faf040f31e7
[   23.988780][  T345] RDX: 0000000000000000 RSI: 00007ffce62f6e50 RDI: 0000000000000005
[   23.989286][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.989802][  T345] R10: 00007faf03feb6f8 R11: 0000000000000246 R12: 00007ffce62f7530


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