======================================
| [   19.763613][  T314] ip_gre: GRE over IPv4 tunneling driver
| [   19.825316][  T313] ------------[ cut here ]------------
| [ 19.825996][ T313] WARNING: CPU: 1 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) 
| [   19.827121][  T313] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.828922][  T313] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.829625][ 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) 
[ 19.830209][ T313] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.832331][  T313] RSP: 0018:ffffc90000527000 EFLAGS: 00010246
[   19.833044][  T313] RAX: 0000000000000000 RBX: ffff88800c0ec000 RCX: 0000000000000001
[   19.833889][  T313] RDX: 0000000000000000 RSI: ffffffff8a29b941 RDI: ffffffff89a555e0
[   19.834733][  T313] RBP: ffffc900005270e8 R08: ffff88800c0ec218 R09: 0000000000000000
[   19.835576][  T313] R10: ffffc90000527118 R11: ffffffff8a779160 R12: 1ffff920000a4e04
[   19.836450][  T313] R13: 00000000000005b6 R14: ffffc90000527118 R15: ffff88800c0ec218
[   19.837315][  T313] FS:  00007f4d7d45b800(0000) GS:ffff8880a3137000(0000) knlGS:0000000000000000
[   19.838308][  T313] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.839019][  T313] CR2: 00007f7c4266b198 CR3: 000000000cf67006 CR4: 0000000000772ef0
[   19.839867][  T313] PKRU: 55555554
[   19.840303][  T313] Call Trace:
[   19.840724][  T313]  <TASK>
[ 19.841029][ T313] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.841737][ T313] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.842298][ T313] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.842873][ T313] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.843785][ T313] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.844644][ T313] netif_set_mtu (net/core/dev.c:9652) 
[ 19.845375][ T313] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.845951][ T313] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.846507][ T313] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.846919][ T313] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.847487][ T313] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.848055][ T313] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.848632][ T313] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.849329][ T313] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.849897][ T313] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.850466][ T313] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 19.851044][ T313] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.852035][ T313] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.852756][ T313] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.854582][ T313] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.855156][ T313] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.855711][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.856284][ T313] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.856859][ T313] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.857431][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.858015][ T313] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.858577][ T313] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.859132][ T313] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.859692][ T313] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.860256][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.860814][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.861396][ T313] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.861953][ T313] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.862518][ T313] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.863103][ T313] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.864917][ 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) 
[ 19.865914][ T313] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.866481][ T313] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.867146][ T313] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.867708][ T313] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.868020][ T313] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.868345][ T313] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.868654][ T313] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.868958][ T313] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.869497][ T313] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.869882][ T313] ___sys_sendmsg (net/socket.c:2670) 
[ 19.870208][ T313] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.870733][ T313] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.871036][ T313] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.871357][ T313] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.871664][ T313] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.872203][ T313] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.872503][ T313] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.872841][ T313] __sys_sendmsg (net/socket.c:2700) 
[ 19.873142][ T313] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.873490][ 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) 
[ 19.873800][ 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) 
[ 19.874107][ T313] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.874428][ T313] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.874949][ T313] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.875353][  T313] RIP: 0033:0x7f4d7d6281e7
[ 19.875671][ T313] Code: Unable to access opcode bytes at 0x7f4d7d6281bd.

Code starting with the faulting instruction
===========================================
[   19.876060][  T313] RSP: 002b:00007ffcdf3234f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.876541][  T313] RAX: ffffffffffffffda RBX: 00007ffcdf323c20 RCX: 00007f4d7d6281e7
[   19.876993][  T313] RDX: 0000000000000000 RSI: 00007ffcdf323560 RDI: 0000000000000005
[   19.877697][  T313] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.878149][  T313] R10: 00007f4d7d5206f8 R11: 0000000000000246 R12: 00007ffcdf323c40
[   19.878621][  T313] R13: 00000000686e4629 R14: 0000000000499600 R15: 00007ffcdf32364c
| [   22.607748][  T341] ------------[ cut here ]------------
| [ 22.608102][ T341] WARNING: CPU: 2 PID: 341 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.608906][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.610786][  T341] Tainted: [W]=WARN
[   22.611292][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.611839][ T341] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.612199][ T341] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.613368][  T341] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   22.613783][  T341] RAX: 0000000000000000 RBX: ffff88800c25a000 RCX: 0000000000000001
[   22.614287][  T341] RDX: 0000000000000000 RSI: ffffffff8a29b941 RDI: ffffffff89a555e0
[   22.614777][  T341] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.615277][  T341] R10: ffffc900005c7010 R11: ffffffff8b0a8918 R12: 1ffff920000b8de2
[   22.615766][  T341] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff88800c25af08
[   22.616265][  T341] FS:  00007f6be42d4800(0000) GS:ffff8880a31b7000(0000) knlGS:0000000000000000
[   22.616838][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.617263][  T341] CR2: 00000000004e5aa8 CR3: 0000000005224003 CR4: 0000000000772ef0
[   22.617754][  T341] PKRU: 55555554
[   22.618003][  T341] Call Trace:
[   22.618412][  T341]  <TASK>
[ 22.618595][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.618933][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.619282][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.619613][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.620025][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.620365][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 22.620700][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.621040][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.621513][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.621768][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.622225][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.622611][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.622948][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.623288][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.623711][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.624054][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.624395][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.624735][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.625066][ T341] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 22.625403][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.625808][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.626138][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.626482][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.626819][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.627149][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.627485][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.627812][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 22.628143][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.628485][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.628819][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.629231][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.629568][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.629901][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.630254][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.630592][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.630922][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.631259][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.631592][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.631920][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.632262][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.632605][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.632942][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.633285][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.633618][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.633965][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.634301][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 22.634636][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.634969][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.635306][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.635640][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.635970][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.636316][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.636655][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.636988][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.637328][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.637746][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 22.638072][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.638408][ T341] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 22.638819][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.639152][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.639494][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.639830][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.640171][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.640500][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.640838][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 22.641171][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.641585][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.641927][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.642270][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.642609][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.643014][  T341] RIP: 0033:0x7f6be44a11e7
[ 22.643363][ T341] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   22.644582][  T341] RSP: 002b:00007ffd89a49df8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.645080][  T341] RAX: ffffffffffffffda RBX: 00007ffd89a4a520 RCX: 00007f6be44a11e7
[   22.645581][  T341] RDX: 0000000000000000 RSI: 00007ffd89a49e60 RDI: 0000000000000005
[   22.646076][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.646570][  T341] R10: 0000000026ed7910 R11: 0000000000000246 R12: 0000000000000004
[   22.647054][  T341] R13: 00000000686e462c R14: 0000000000499600 R15: 0000000000000000
| [   22.868244][  T343] ------------[ cut here ]------------
| [ 22.868575][ T343] WARNING: CPU: 2 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) 
| [   22.869751][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.871119][  T343] Tainted: [W]=WARN
[   22.871375][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.871765][ 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) 
[ 22.872100][ T343] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.873212][  T343] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   22.873611][  T343] RAX: 0000000000000000 RBX: ffff88800c25a000 RCX: 0000000000000001
[   22.874086][  T343] RDX: 0000000000000000 RSI: ffffffff8a29b941 RDI: ffffffff89a555e0
[   22.874563][  T343] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.875027][  T343] R10: ffffc900005d7010 R11: ffffffff8b0a8918 R12: 1ffff920000bade2
[   22.875503][  T343] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff88800c25af08
[   22.875973][  T343] FS:  00007f0a64cae800(0000) GS:ffff8880a31b7000(0000) knlGS:0000000000000000
[   22.876522][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.876918][  T343] CR2: 00000000004e5ab0 CR3: 00000000095c7005 CR4: 0000000000772ef0
[   22.877403][  T343] PKRU: 55555554
[   22.877646][  T343] Call Trace:
[   22.877885][  T343]  <TASK>
[ 22.878057][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.878390][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.878715][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.879030][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.879433][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.879754][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 22.880072][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.880410][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.880861][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.881106][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.881547][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.881916][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.882253][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.882620][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.883031][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.883357][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.883676][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.883997][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.884332][ T343] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 22.884652][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.885043][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.885378][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.885699][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.886015][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.886344][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.886664][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.886978][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 22.887310][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.887629][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.887951][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.888353][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.888679][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.889002][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.889332][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.889656][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.889973][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.890300][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.890620][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.890938][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.891268][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.891590][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.891915][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.892245][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.892564][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.892905][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.893233][ 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) 
[ 22.893552][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.893873][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.894197][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.894551][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.894877][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.895217][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.895543][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.895862][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.896189][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.896596][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 22.896912][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.897238][ T343] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 22.897639][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.897958][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.898308][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.898631][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.898950][ T343] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.899278][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.899605][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 22.899930][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.900330][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.900658][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.900979][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.901307][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.901695][  T343] RIP: 0033:0x7f0a64e7b1e7
[ 22.902023][ 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)
[   22.903151][  T343] RSP: 002b:00007ffde810c7d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.903636][  T343] RAX: ffffffffffffffda RBX: 00007ffde810cf00 RCX: 00007f0a64e7b1e7
[   22.904110][  T343] RDX: 0000000000000000 RSI: 00007ffde810c840 RDI: 0000000000000005
[   22.904594][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.905066][  T343] R10: 0000000032893910 R11: 0000000000000246 R12: 0000000000000004
[   22.905548][  T343] R13: 00000000686e462c R14: 0000000000499600 R15: 0000000000000000
| [   23.355991][  T346] ------------[ cut here ]------------
| [ 23.356641][ T346] WARNING: CPU: 1 PID: 346 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) 
| [   23.357262][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.358656][  T346] Tainted: [W]=WARN
[   23.358898][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.359301][ T346] 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) 
[ 23.359624][ T346] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.360708][  T346] RSP: 0018:ffffc90000677000 EFLAGS: 00010246
[   23.361090][  T346] RAX: 0000000000000000 RBX: ffff88800c2e4000 RCX: 0000000000000001
[   23.361553][  T346] RDX: 0000000000000000 RSI: ffffffff8a29b941 RDI: ffffffff89a555e0
[   23.362049][  T346] RBP: ffffc900006770e8 R08: ffff88800c2e4218 R09: 0000000000000000
[   23.362513][  T346] R10: ffffc90000677118 R11: ffffffff8a779160 R12: 1ffff920000cee04
[   23.362976][  T346] R13: 00000000000005b6 R14: ffffc90000677118 R15: ffff88800c2e4218
[   23.363436][  T346] FS:  00007f1d08183800(0000) GS:ffff8880a3137000(0000) knlGS:0000000000000000
[   23.363976][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.364362][  T346] CR2: 0000000000436890 CR3: 0000000004cb1002 CR4: 0000000000772ef0
[   23.364818][  T346] PKRU: 55555554
[   23.365046][  T346] Call Trace:
[   23.365298][  T346]  <TASK>
[ 23.365489][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.365877][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.366339][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.366649][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.366955][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.367286][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.367591][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.367906][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.368222][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.368459][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.368763][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.369076][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.369411][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.369822][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.370135][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.370451][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.370764][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.371064][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.371375][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.371680][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.371989][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.372298][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.372614][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.372940][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.373313][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.373660][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.373962][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.374278][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.374581][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.374887][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.375203][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.375521][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.375827][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.376137][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.376462][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.376765][ T346] ? 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) 
[ 23.377070][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.377408][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.377743][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.378055][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.378374][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.378679][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.378990][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.379308][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.379613][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.380009][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.380324][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.380630][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.380935][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.381264][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.381603][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.381915][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.382227][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.382550][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.382865][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.383181][ T346] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.383496][ T346] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.383802][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.384113][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.384426][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.384802][  T346] RIP: 0033:0x7f1d083501e7
[ 23.385116][ T346] 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)
[   23.386219][  T346] RSP: 002b:00007ffdd40527b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.386712][  T346] RAX: ffffffffffffffda RBX: 00007ffdd4052ee0 RCX: 00007f1d083501e7
[   23.387180][  T346] RDX: 0000000000000000 RSI: 00007ffdd4052820 RDI: 0000000000000005
[   23.387637][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.388091][  T346] R10: 00007f1d082486f8 R11: 0000000000000246 R12: 00007ffdd4052f00


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