======================================
| [   20.584519][  T311] ip_gre: GRE over IPv4 tunneling driver
| [   20.671132][  T310] ------------[ cut here ]------------
| [ 20.671888][ T310] WARNING: CPU: 2 PID: 310 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) 
| [   20.673091][  T310] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.674942][  T310] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.675648][ T310] 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) 
[ 20.676264][ T310] 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
[   20.678200][  T310] RSP: 0018:ffffc90000af7000 EFLAGS: 00010246
[   20.678924][  T310] RAX: 0000000000000000 RBX: ffff88800e804000 RCX: 0000000000000001
[   20.679784][  T310] RDX: 0000000000000000 RSI: ffffffff98a9b939 RDI: ffffffff982555e0
[   20.680644][  T310] RBP: ffffc90000af70e8 R08: ffff88800e804218 R09: 0000000000000000
[   20.681511][  T310] R10: ffffc90000af7118 R11: ffffffff98f79160 R12: 1ffff9200015ee04
[   20.682358][  T310] R13: 00000000000005b6 R14: ffffc90000af7118 R15: ffff88800e804218
[   20.683235][  T310] FS:  00007feb340ad800(0000) GS:ffff88809b7b7000(0000) knlGS:0000000000000000
[   20.684243][  T310] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.684986][  T310] CR2: 00007fa4361d1000 CR3: 00000000029ed006 CR4: 0000000000772ef0
[   20.686169][  T310] PKRU: 55555554
[   20.686603][  T310] Call Trace:
[   20.687062][  T310]  <TASK>
[ 20.687364][ T310] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.693550][ T310] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.694161][ T310] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.694746][ T310] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.695335][ T310] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.695916][ T310] netif_set_mtu (net/core/dev.c:9652) 
[ 20.696511][ T310] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.697118][ T310] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.697683][ T310] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.698134][ T310] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.698695][ T310] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.699302][ T310] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.699881][ T310] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.700588][ T310] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.701179][ T310] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.701730][ T310] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.702306][ T310] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.702860][ T310] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.703460][ T310] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.704055][ T310] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.704630][ T310] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.705217][ T310] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.707461][ T310] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.708062][ T310] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.708636][ T310] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.709256][ T310] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.709848][ T310] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.710460][ T310] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.711068][ T310] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.711649][ T310] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.712254][ T310] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.712839][ T310] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.713437][ T310] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.714057][ T310] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.714669][ T310] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.715308][ T310] ? 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) 
[ 20.715900][ T310] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.716517][ T310] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.717112][ T310] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.717710][ T310] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.718315][ T310] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.718903][ T310] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.719543][ T310] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.721418][ T310] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.722030][ T310] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.722769][ T310] ___sys_sendmsg (net/socket.c:2670) 
[ 20.723371][ T310] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.723975][ T310] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.724506][ T310] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.725108][ T310] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.725686][ T310] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.726260][ T310] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.726818][ T310] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.727424][ T310] __sys_sendmsg (net/socket.c:2700) 
[ 20.728018][ T310] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.728573][ T310] ? 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) 
[ 20.729167][ T310] ? 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) 
[ 20.729740][ T310] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.730343][ T310] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.730911][ T310] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.731599][  T310] RIP: 0033:0x7feb3427a1e7
[ 20.732216][ T310] Code: Unable to access opcode bytes at 0x7feb3427a1bd.

Code starting with the faulting instruction
===========================================
[   20.732934][  T310] RSP: 002b:00007ffd1d8f84e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.733779][  T310] RAX: ffffffffffffffda RBX: 00007ffd1d8f8c10 RCX: 00007feb3427a1e7
[   20.734628][  T310] RDX: 0000000000000000 RSI: 00007ffd1d8f8550 RDI: 0000000000000005
[   20.735506][  T310] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.736349][  T310] R10: 00007feb341726f8 R11: 0000000000000246 R12: 00007ffd1d8f8c30
[   20.737181][  T310] R13: 00000000686e66a2 R14: 0000000000499600 R15: 00007ffd1d8f863c
| [   23.725160][  T338] ------------[ cut here ]------------
| [ 23.725495][ T338] WARNING: CPU: 1 PID: 338 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) 
| [   23.726891][  T338] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.728331][  T338] Tainted: [W]=WARN
[   23.728566][  T338] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.728969][ T338] 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) 
[ 23.729284][ T338] 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
[   23.730388][  T338] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   23.730785][  T338] RAX: 0000000000000000 RBX: ffff88800ec0a000 RCX: 0000000000000001
[   23.731256][  T338] RDX: 0000000000000000 RSI: ffffffff98a9b939 RDI: ffffffff982555e0
[   23.731721][  T338] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.732209][  T338] R10: ffffc90000557010 R11: ffffffff998a8918 R12: 1ffff920000aade2
[   23.732677][  T338] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff88800ec0af08
[   23.733153][  T338] FS:  00007f8a145cb800(0000) GS:ffff88809b737000(0000) knlGS:0000000000000000
[   23.733976][  T338] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.734371][  T338] CR2: 00000000004e5aa8 CR3: 000000000dcae005 CR4: 0000000000772ef0
[   23.734870][  T338] PKRU: 55555554
[   23.735113][  T338] Call Trace:
[   23.735357][  T338]  <TASK>
[ 23.735528][ T338] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.735844][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.736173][ T338] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.736486][ T338] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.736879][ T338] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.737203][ T338] netif_set_mtu (net/core/dev.c:9652) 
[ 23.737517][ T338] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.737844][ T338] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.738286][ T338] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.738526][ T338] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.738962][ T338] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.739322][ T338] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.739637][ T338] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.739965][ T338] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.740372][ T338] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.740691][ T338] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.741011][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.741329][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.741645][ T338] ? __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) 
[ 23.741968][ T338] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.742363][ T338] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.742673][ T338] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.742986][ T338] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.743293][ T338] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.743601][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.743962][ T338] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.744299][ T338] ? __create_object (mm/kmemleak.c:771) 
[ 23.744627][ T338] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.744972][ T338] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.745288][ T338] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.745676][ T338] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.746002][ T338] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.746316][ T338] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.746625][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.746938][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.747259][ T338] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.747574][ T338] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.747890][ T338] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.748211][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.748528][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.748838][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.749159][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.749476][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.749791][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.750124][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.750431][ T338] ? 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) 
[ 23.750740][ T338] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.751064][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.751371][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.751683][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.752016][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.752325][ T338] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.752639][ T338] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.752972][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.753278][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.753670][ T338] ___sys_sendmsg (net/socket.c:2670) 
[ 23.753986][ T338] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.754302][ T338] ? __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) 
[ 23.754696][ T338] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.755020][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.755331][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.755647][ T338] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.755966][ T338] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.756274][ T338] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.756593][ T338] __sys_sendmsg (net/socket.c:2700) 
[ 23.756902][ T338] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.757299][ T338] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.757619][ T338] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.757926][ T338] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.758245][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.758626][  T338] RIP: 0033:0x7f8a147981e7
[ 23.758944][ T338] 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)
[   23.760075][  T338] RSP: 002b:00007ffda317e1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.760539][  T338] RAX: ffffffffffffffda RBX: 00007ffda317e900 RCX: 00007f8a147981e7
[   23.761011][  T338] RDX: 0000000000000000 RSI: 00007ffda317e240 RDI: 0000000000000005
[   23.761477][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.761931][  T338] R10: 000000001c19d910 R11: 0000000000000246 R12: 0000000000000004
[   23.762401][  T338] R13: 00000000686e66a5 R14: 0000000000499600 R15: 0000000000000000
| [   24.043702][  T340] ------------[ cut here ]------------
| [ 24.044057][ 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) 
| [   24.044708][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.046118][  T340] Tainted: [W]=WARN
[   24.046359][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.046741][ 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) 
[ 24.047068][ 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
[   24.048209][  T340] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   24.048633][  T340] RAX: 0000000000000000 RBX: ffff88800ec0a000 RCX: 0000000000000001
[   24.049126][  T340] RDX: 0000000000000000 RSI: ffffffff98a9b939 RDI: ffffffff982555e0
[   24.049597][  T340] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.050068][  T340] R10: ffffc90000607010 R11: ffffffff998a8918 R12: 1ffff920000c0de2
[   24.050541][  T340] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff88800ec0af08
[   24.051035][  T340] FS:  00007f4e3813c800(0000) GS:ffff88809b837000(0000) knlGS:0000000000000000
[   24.051574][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.051985][  T340] CR2: 00000000004e5ab0 CR3: 000000000dc9e004 CR4: 0000000000772ef0
[   24.052455][  T340] PKRU: 55555554
[   24.052689][  T340] Call Trace:
[   24.052919][  T340]  <TASK>
[ 24.053092][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.053416][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.053733][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.054067][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.054466][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.054796][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 24.055127][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.055446][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.055891][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.056139][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.056577][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.056937][ T340] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.057280][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.057602][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.058011][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.058318][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.058626][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.058937][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.059269][ 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) 
[ 24.059583][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.059973][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.060288][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.060602][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.060918][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.061234][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.061555][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.061860][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 24.062185][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.062495][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.062806][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.063203][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.063524][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.063836][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.064162][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.064480][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.064860][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.065189][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.065500][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.065809][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.066158][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.066474][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.066784][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.067103][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.067418][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.067752][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.068078][ 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) 
[ 24.068397][ T340] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.068724][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.069061][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.069394][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.069719][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.070048][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.070369][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.070683][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.071014][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.071427][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 24.071751][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.072084][ 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) 
[ 24.072488][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.072813][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.073146][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.073475][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.073795][ 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) 
[ 24.074130][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.074460][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 24.074796][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.075207][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.075542][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.075868][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.076205][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.076614][  T340] RIP: 0033:0x7f4e383091e7
[ 24.076947][ 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)
[   24.078101][  T340] RSP: 002b:00007ffeec1d9998 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.078582][  T340] RAX: ffffffffffffffda RBX: 00007ffeec1da0c0 RCX: 00007f4e383091e7
[   24.079078][  T340] RDX: 0000000000000000 RSI: 00007ffeec1d9a00 RDI: 0000000000000005
[   24.079561][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.080052][  T340] R10: 000000001c85f910 R11: 0000000000000246 R12: 0000000000000004
[   24.080529][  T340] R13: 00000000686e66a5 R14: 0000000000499600 R15: 0000000000000000
| [   24.526055][  T343] ------------[ cut here ]------------
| [ 24.526431][ T343] WARNING: CPU: 3 PID: 343 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   24.527132][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.528540][  T343] Tainted: [W]=WARN
[   24.528783][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.529195][ T343] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 24.529525][ T343] 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
[   24.530655][  T343] RSP: 0018:ffffc900009c7000 EFLAGS: 00010246
[   24.531081][  T343] RAX: 0000000000000000 RBX: ffff88800bae4000 RCX: 0000000000000001
[   24.531550][  T343] RDX: 0000000000000000 RSI: ffffffff98a9b939 RDI: ffffffff982555e0
[   24.532021][  T343] RBP: ffffc900009c70e8 R08: ffff88800bae4218 R09: 0000000000000000
[   24.532487][  T343] R10: ffffc900009c7118 R11: ffffffff98f79160 R12: 1ffff92000138e04
[   24.532962][  T343] R13: 00000000000005b6 R14: ffffc900009c7118 R15: ffff88800bae4218
[   24.533455][  T343] FS:  00007f6e7e269800(0000) GS:ffff88809b837000(0000) knlGS:0000000000000000
[   24.534033][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.534436][  T343] CR2: 0000000000436890 CR3: 000000000dc54004 CR4: 0000000000772ef0
[   24.534931][  T343] PKRU: 55555554
[   24.535202][  T343] Call Trace:
[   24.535437][  T343]  <TASK>
[ 24.535595][ T343] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.536010][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.536325][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.536641][ T343] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.536966][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.537297][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 24.537618][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.537948][ T343] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.538295][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.538539][ T343] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.538854][ T343] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.539180][ T343] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.539507][ T343] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.539889][ T343] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.540216][ T343] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.540526][ T343] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 24.540834][ T343] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.541144][ T343] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.541452][ T343] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.541782][ T343] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.542109][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.542436][ T343] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.542762][ T343] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.543104][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.543426][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.543743][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.544057][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.544377][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.544714][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.545033][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.545346][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.545664][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.545980][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.546287][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.546609][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.546920][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 24.547256][ T343] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.547585][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.547897][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.548223][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.548542][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.548859][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.549190][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.549507][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.549831][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.550246][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 24.550570][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.550897][ T343] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.551221][ T343] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.551538][ T343] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.551852][ T343] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.552177][ T343] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.552487][ T343] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.552822][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 24.553158][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.553476][ T343] ? 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) 
[ 24.553806][ T343] ? 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) 
[ 24.554139][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.554453][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.554783][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.555184][  T343] RIP: 0033:0x7f6e7e4361e7
[ 24.555507][ T343] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   24.556625][  T343] RSP: 002b:00007ffda20d1c18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.557110][  T343] RAX: ffffffffffffffda RBX: 00007ffda20d2340 RCX: 00007f6e7e4361e7
[   24.557589][  T343] RDX: 0000000000000000 RSI: 00007ffda20d1c80 RDI: 0000000000000005
[   24.558072][  T343] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.558556][  T343] R10: 00007f6e7e32e6f8 R11: 0000000000000246 R12: 00007ffda20d2360


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