======================================
| [   20.437768][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   20.498801][  T313] ------------[ cut here ]------------
| [ 20.499262][ T313] WARNING: CPU: 0 PID: 313 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.500252][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.501324][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.501749][ 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) 
[ 20.502293][ 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
[   20.503509][  T313] RSP: 0018:ffffc90000707000 EFLAGS: 00010246
[   20.503951][  T313] RAX: 0000000000000000 RBX: ffff8880079b1000 RCX: 0000000000000001
[   20.504449][  T313] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[   20.504950][  T313] RBP: ffffc900007070e8 R08: ffff8880079b1218 R09: 0000000000000000
[   20.505466][  T313] R10: ffffc90000707118 R11: ffffffff97579160 R12: 1ffff920000e0e04
[   20.505959][  T313] R13: 00000000000005b6 R14: ffffc90000707118 R15: ffff8880079b1218
[   20.506453][  T313] FS:  00007f64ce34d800(0000) GS:ffff88809d0b7000(0000) knlGS:0000000000000000
[   20.507019][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.507439][  T313] CR2: 000055b5086c5fa0 CR3: 000000000c7b7005 CR4: 0000000000772ef0
[   20.507923][  T313] PKRU: 55555554
[   20.508182][  T313] Call Trace:
[   20.508422][  T313]  <TASK>
[ 20.508596][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.508992][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.509308][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.509632][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.509953][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.510277][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 20.510607][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.510926][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.511237][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.511483][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.511793][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.512112][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.512452][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.512834][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.513149][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.513480][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.513792][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.514098][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.514407][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.514735][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.519563][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.519872][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.524195][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.524539][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.524853][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.525180][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.525772][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.526095][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.526422][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.526748][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.527283][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.527606][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.527918][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.528236][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.528576][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.528929][ 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) 
[ 20.529245][ T313] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.529571][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.529882][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.530448][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.530767][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.531087][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.531406][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.531958][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.532306][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.532718][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 20.533035][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.533355][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.533691][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.534002][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.534328][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.534659][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.534966][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.535323][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 20.535657][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.535976][ 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) 
[ 20.536298][ 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) 
[ 20.536629][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.536944][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.537261][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.537665][  T313] RIP: 0033:0x7f64ce51a1e7
[ 20.538006][ T313] Code: Unable to access opcode bytes at 0x7f64ce51a1bd.

Code starting with the faulting instruction
===========================================
[   20.538685][  T313] RSP: 002b:00007fff11ebf1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.539385][  T313] RAX: ffffffffffffffda RBX: 00007fff11ebf900 RCX: 00007f64ce51a1e7
[   20.540591][  T313] RDX: 0000000000000000 RSI: 00007fff11ebf240 RDI: 0000000000000005
[   20.541068][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.541542][  T313] R10: 00007f64ce4126f8 R11: 0000000000000246 R12: 00007fff11ebf920
[   20.542008][  T313] R13: 00000000686e6f46 R14: 0000000000499600 R15: 00007fff11ebf32c
| [   23.427725][  T340] ------------[ cut here ]------------
| [ 23.428064][ T340] WARNING: CPU: 3 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) 
| [   23.428761][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.430247][  T340] Tainted: [W]=WARN
[   23.430498][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.430892][ 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) 
[ 23.431212][ 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
[   23.433230][  T340] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   23.433639][  T340] RAX: 0000000000000000 RBX: ffff888005322000 RCX: 0000000000000001
[   23.434097][  T340] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[   23.434600][  T340] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.435092][  T340] R10: ffffc900005d7010 R11: ffffffff97ea8918 R12: 1ffff920000bade2
[   23.435624][  T340] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff888005322f08
[   23.436134][  T340] FS:  00007fb6ca62b800(0000) GS:ffff88809d237000(0000) knlGS:0000000000000000
[   23.436682][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.437083][  T340] CR2: 00000000004e5aa8 CR3: 000000000c7ba006 CR4: 0000000000772ef0
[   23.437581][  T340] PKRU: 55555554
[   23.437817][  T340] Call Trace:
[   23.438048][  T340]  <TASK>
[ 23.438209][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.438545][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.438867][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.439175][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.439576][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.439893][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.440381][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.440708][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.441151][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.441391][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.441824][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.442176][ T340] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.442520][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.442831][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.443233][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.443554][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.443873][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.444182][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.444505][ 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) 
[ 23.444813][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.445218][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.445551][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.445863][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.446169][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.446511][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.446820][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.447124][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.447452][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.447763][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.448078][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.448492][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.448823][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.449137][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.449461][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.449793][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.450101][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.450417][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.450752][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.451075][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.451399][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.451748][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.452105][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.452448][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.452780][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.453128][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.453450][ 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) 
[ 23.453773][ T340] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.454110][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.454460][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.454797][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.455123][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.455470][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.455817][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.456143][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.456476][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.456899][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.457219][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.457563][ 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) 
[ 23.457977][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.458321][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.458657][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.458984][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.459317][ 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) 
[ 23.459651][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.459993][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.460308][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.460698][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.461020][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.461336][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.461653][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.462036][  T340] RIP: 0033:0x7fb6ca7f81e7
[ 23.462363][ 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)
[   23.464022][  T340] RSP: 002b:00007ffe09db01a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.464728][  T340] RAX: ffffffffffffffda RBX: 00007ffe09db08d0 RCX: 00007fb6ca7f81e7
[   23.465214][  T340] RDX: 0000000000000000 RSI: 00007ffe09db0210 RDI: 0000000000000005
[   23.465720][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.466202][  T340] R10: 0000000028388910 R11: 0000000000000246 R12: 0000000000000004
[   23.466724][  T340] R13: 00000000686e6f49 R14: 0000000000499600 R15: 0000000000000000
| [   23.718600][  T342] ------------[ cut here ]------------
| [ 23.718917][ T342] WARNING: CPU: 1 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) 
| [   23.719540][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.720893][  T342] Tainted: [W]=WARN
[   23.721139][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.721530][ 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) 
[ 23.721849][ 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
[   23.722949][  T342] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   23.723343][  T342] RAX: 0000000000000000 RBX: ffff888005322000 RCX: 0000000000000001
[   23.723813][  T342] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[   23.724272][  T342] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.724737][  T342] R10: ffffc900005a7010 R11: ffffffff97ea8918 R12: 1ffff920000b4de2
[   23.725219][  T342] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff888005322f08
[   23.725706][  T342] FS:  00007fee9aefc800(0000) GS:ffff88809d137000(0000) knlGS:0000000000000000
[   23.726247][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.726645][  T342] CR2: 00000000004e5ab0 CR3: 000000000967e002 CR4: 0000000000772ef0
[   23.727115][  T342] PKRU: 55555554
[   23.727349][  T342] Call Trace:
[   23.727592][  T342]  <TASK>
[ 23.727756][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.728068][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.728387][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.728703][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.729088][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.729397][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 23.729875][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.730193][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.730688][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.730920][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.731343][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.731707][ T342] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.732027][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.732338][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.732738][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.733046][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.733348][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.733672][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.733983][ 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) 
[ 23.734297][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.734686][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.734993][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.735315][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.735633][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.735939][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.736243][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.736554][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 23.736874][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.737182][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.737499][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.737885][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.738196][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.738518][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.738825][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.739142][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.739455][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.739758][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.740065][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.740369][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.740682][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.740992][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.741322][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.741648][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.741956][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.742272][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.742582][ 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) 
[ 23.742989][ T342] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.743521][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.744039][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.744608][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.745152][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.745725][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.746264][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.746807][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.747332][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.748014][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 23.748566][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.749093][ 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) 
[ 23.749782][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.750313][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.750855][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.751376][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.751925][ 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) 
[ 23.752477][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.752801][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 23.753108][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.753521][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.753845][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.754158][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.754672][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.755064][  T342] RIP: 0033:0x7fee9b0c91e7
[ 23.755409][ 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)
[   23.756528][  T342] RSP: 002b:00007ffe51187c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.756995][  T342] RAX: ffffffffffffffda RBX: 00007ffe51188330 RCX: 00007fee9b0c91e7
[   23.757487][  T342] RDX: 0000000000000000 RSI: 00007ffe51187c70 RDI: 0000000000000005
[   23.757949][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.758416][  T342] R10: 000000000fbed910 R11: 0000000000000246 R12: 0000000000000004
[   23.758885][  T342] R13: 00000000686e6f4a R14: 0000000000499600 R15: 0000000000000000
| [   24.207999][  T345] ------------[ cut here ]------------
| [ 24.208450][ T345] WARNING: CPU: 0 PID: 345 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   24.209062][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.210444][  T345] Tainted: [W]=WARN
[   24.210679][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.211064][ 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) 
[ 24.211381][ 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
[   24.212530][  T345] RSP: 0018:ffffc90000567000 EFLAGS: 00010246
[   24.212925][  T345] RAX: 0000000000000000 RBX: ffff888007d41000 RCX: 0000000000000001
[   24.213380][  T345] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[   24.213842][  T345] RBP: ffffc900005670e8 R08: ffff888007d41218 R09: 0000000000000000
[   24.214296][  T345] R10: ffffc90000567118 R11: ffffffff97579160 R12: 1ffff920000ace04
[   24.214762][  T345] R13: 00000000000005b6 R14: ffffc90000567118 R15: ffff888007d41218
[   24.215232][  T345] FS:  00007f9ee50f6800(0000) GS:ffff88809d0b7000(0000) knlGS:0000000000000000
[   24.215809][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.216195][  T345] CR2: 0000000000436890 CR3: 000000000c7d1001 CR4: 0000000000772ef0
[   24.216669][  T345] PKRU: 55555554
[   24.216909][  T345] Call Trace:
[   24.217146][  T345]  <TASK>
[ 24.217304][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.217729][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.218046][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.218369][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.218699][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.219016][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 24.219324][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.219678][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.219992][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.220226][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.220545][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.220864][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.221185][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.221578][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.221897][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.222208][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 24.222535][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.222838][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.223153][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.223467][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.223810][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.224119][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.224449][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.224962][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.225531][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.226111][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.226669][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.226993][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.227304][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.227658][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.227973][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.228286][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.228716][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.229205][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.229569][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.229879][ 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) 
[ 24.230221][ T345] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.230768][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.231216][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.231718][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.232231][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.232825][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.233387][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.233919][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.234487][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.235202][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 24.235780][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.236324][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.236903][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.237478][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.238037][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.238603][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.239150][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.239765][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 24.240327][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.240946][ 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) 
[ 24.241540][ 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) 
[ 24.242103][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.242672][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.243205][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.243887][  T345] RIP: 0033:0x7f9ee52c31e7
[ 24.244483][ 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)
[   24.246459][  T345] RSP: 002b:00007ffd8f6da558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.247279][  T345] RAX: ffffffffffffffda RBX: 00007ffd8f6dac80 RCX: 00007f9ee52c31e7
[   24.248126][  T345] RDX: 0000000000000000 RSI: 00007ffd8f6da5c0 RDI: 0000000000000005
[   24.248945][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.249757][  T345] R10: 00007f9ee51bb6f8 R11: 0000000000000246 R12: 00007ffd8f6daca0
[   24.250591][  T345] R13: 00000000686e6f4a R14: 0000000000499600 R15: 00007ffd8f6da6a8
| [  131.609886][  T784] ------------[ cut here ]------------
| [ 131.610288][ T784] WARNING: CPU: 2 PID: 784 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) 
| [  131.610951][  T784] Modules linked in: act_mirred cls_flower bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [  131.612533][  T784] Tainted: [W]=WARN
[  131.612790][  T784] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 131.613197][ T784] 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) 
[ 131.613540][ T784] 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
[  131.614658][  T784] RSP: 0018:ffffc9000159f000 EFLAGS: 00010246
[  131.615062][  T784] RAX: 0000000000000000 RBX: ffff888008149000 RCX: 0000000000000001
[  131.615553][  T784] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[  131.616029][  T784] RBP: ffffc9000159f0e8 R08: ffff888008149218 R09: 0000000000000000
[  131.616515][  T784] R10: ffffc9000159f118 R11: ffffffff93400130 R12: 1ffff920002b3e04
[  131.617002][  T784] R13: 00000000000005b6 R14: ffffc9000159f118 R15: ffff888008149218
[  131.617479][  T784] FS:  00007fd2c0510800(0000) GS:ffff88809d1b7000(0000) knlGS:0000000000000000
[  131.618026][  T784] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.618423][  T784] CR2: 00007fd2c0610130 CR3: 0000000009de4006 CR4: 0000000000772ef0
[  131.618913][  T784] PKRU: 55555554
[  131.619162][  T784] Call Trace:
[  131.619411][  T784]  <TASK>
[ 131.619607][ T784] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 131.620012][ T784] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 131.620340][ T784] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 131.620672][ T784] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 131.621018][ T784] netif_set_mtu (net/core/dev.c:9652) 
[ 131.621342][ T784] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 131.621688][ T784] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 131.622014][ T784] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 131.622261][ T784] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 131.622594][ T784] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 131.622926][ T784] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 131.623251][ T784] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 131.623663][ T784] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 131.623997][ T784] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 131.624324][ T784] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 131.624652][ T784] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 131.624970][ T784] ? __dev_get_by_name (net/core/dev.c:865) 
[ 131.625294][ T784] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 131.625643][ T784] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 131.625981][ T784] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 131.626296][ T784] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 131.626630][ T784] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 131.626967][ T784] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 131.627291][ T784] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 131.627634][ T784] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 131.627951][ T784] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 131.628281][ T784] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 131.628610][ T784] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 131.628939][ T784] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 131.629262][ T784] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.629596][ T784] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 131.629919][ T784] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 131.630236][ T784] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 131.630583][ T784] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 131.630907][ T784] ? 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) 
[ 131.631227][ T784] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 131.631559][ T784] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 131.631884][ T784] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 131.632206][ T784] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 131.632539][ T784] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 131.632859][ T784] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 131.633240][ T784] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 131.633576][ T784] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 131.633897][ T784] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 131.634310][ T784] ___sys_sendmsg (net/socket.c:2670) 
[ 131.634648][ T784] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 131.634965][ T784] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 131.635290][ T784] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 131.635646][ T784] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 131.635972][ T784] ? __handle_mm_fault (mm/memory.c:6212) 
[ 131.636290][ T784] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 131.636627][ T784] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 131.636965][ T784] __sys_sendmsg (net/socket.c:2700) 
[ 131.637296][ T784] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 131.637638][ T784] ? 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) 
[ 131.637972][ T784] ? 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) 
[ 131.638290][ T784] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 131.638627][ T784] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 131.638947][ T784] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  131.639348][  T784] RIP: 0033:0x7fd2c06dd1e7
[ 131.639690][ T784] 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)
[  131.640819][  T784] RSP: 002b:00007ffdac921988 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  131.641296][  T784] RAX: ffffffffffffffda RBX: 00007ffdac9220b0 RCX: 00007fd2c06dd1e7
[  131.641780][  T784] RDX: 0000000000000000 RSI: 00007ffdac9219f0 RDI: 0000000000000005
[  131.642264][  T784] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[  131.642757][  T784] R10: 00007fd2c05d56f8 R11: 0000000000000246 R12: 00007ffdac9220d0


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