======================================
| [   19.847217][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   19.919492][  T312] ------------[ cut here ]------------
| [ 19.919967][ T312] WARNING: CPU: 0 PID: 312 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.920606][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   19.921617][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.922011][ T312] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.922335][ T312] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.923451][  T312] RSP: 0018:ffffc900005a7000 EFLAGS: 00010246
[   19.924093][  T312] RAX: 0000000000000000 RBX: ffff88800bfe4000 RCX: 0000000000000001
[   19.924571][  T312] RDX: 0000000000000000 RSI: ffffffffb309b939 RDI: ffffffffb28555e0
[   19.925043][  T312] RBP: ffffc900005a70e8 R08: ffff88800bfe4218 R09: 0000000000000000
[   19.925549][  T312] R10: ffffc900005a7118 R11: ffffffffb3579160 R12: 1ffff920000b4e04
[   19.945494][  T312] R13: 00000000000005b6 R14: ffffc900005a7118 R15: ffff88800bfe4218
[   19.945989][  T312] FS:  00007f4ccff81800(0000) GS:ffff8880810b7000(0000) knlGS:0000000000000000
[   19.946533][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.946946][  T312] CR2: 00007fdf337e11a0 CR3: 0000000006228001 CR4: 0000000000772ef0
[   19.947710][  T312] PKRU: 55555554
[   19.947947][  T312] Call Trace:
[   19.948178][  T312]  <TASK>
[ 19.948350][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.948748][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.950189][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.950512][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 19.950820][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.951131][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 19.951440][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.951764][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 19.952069][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.952304][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.952849][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.953403][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.953724][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.954107][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.954421][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.954738][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 19.955051][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.955357][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.956108][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.956645][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.956961][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.957262][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.957581][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.957899][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.958208][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.958528][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.958830][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.959140][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.959444][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.959755][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.960524][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.960846][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.961153][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.961459][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.962005][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.962311][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.962625][ T312] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.962935][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.963239][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.963559][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.963874][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.964183][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.964506][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.964820][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.965127][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.965530][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 19.965841][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.966471][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.966793][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.967101][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.967420][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.968422][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.968960][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.969293][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 19.969608][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.970363][ T312] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 19.970684][ T312] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 19.970994][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.971771][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.972091][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.972488][  T312] RIP: 0033:0x7f4cd014e1e7
[ 19.972816][ T312] Code: Unable to access opcode bytes at 0x7f4cd014e1bd.

Code starting with the faulting instruction
===========================================
[   19.973453][  T312] RSP: 002b:00007ffd3633b9e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.974163][  T312] RAX: ffffffffffffffda RBX: 00007ffd3633c110 RCX: 00007f4cd014e1e7
[   19.974875][  T312] RDX: 0000000000000000 RSI: 00007ffd3633ba50 RDI: 0000000000000005
[   19.975345][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   19.976041][  T312] R10: 00007f4cd00466f8 R11: 0000000000000246 R12: 00007ffd3633c130
[   19.976743][  T312] R13: 00000000686e7268 R14: 0000000000499600 R15: 00007ffd3633bb3c
| [   22.773085][  T341] ------------[ cut here ]------------
| [ 22.773445][ T341] WARNING: CPU: 0 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) 
| [   22.774106][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.775718][  T341] Tainted: [W]=WARN
[   22.775971][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.776378][ 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) 
[ 22.776727][ T341] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.777894][  T341] RSP: 0018:ffffc900004d6ef0 EFLAGS: 00010246
[   22.778307][  T341] RAX: 0000000000000000 RBX: ffff88800d922000 RCX: 0000000000000001
[   22.778823][  T341] RDX: 0000000000000000 RSI: ffffffffb309b939 RDI: ffffffffb28555e0
[   22.779574][  T341] RBP: ffffc900004d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.780076][  T341] R10: ffffc900004d7010 R11: ffffffffb3ea8918 R12: 1ffff9200009ade2
[   22.780586][  T341] R13: 00000000000005dc R14: ffffc900004d7010 R15: ffff88800d922f08
[   22.781078][  T341] FS:  00007fd245b93800(0000) GS:ffff8880810b7000(0000) knlGS:0000000000000000
[   22.781660][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.782076][  T341] CR2: 00007fdf33560120 CR3: 000000000eb06003 CR4: 0000000000772ef0
[   22.782581][  T341] PKRU: 55555554
[   22.782827][  T341] Call Trace:
[   22.783068][  T341]  <TASK>
[ 22.783237][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.783573][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.783907][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.784230][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.784649][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.784990][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 22.785317][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.785663][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.786115][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.786363][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.786812][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.787181][ T341] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 22.787522][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.787849][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.788257][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.788593][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.788916][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.789243][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.789588][ 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) 
[ 22.789914][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.790340][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.790680][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.791008][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.791334][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.791670][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.792008][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.792329][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 22.792681][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.793010][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.793334][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.793747][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.794079][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.794412][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.794758][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.795093][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.795421][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.795773][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.796103][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.796425][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.796758][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.797085][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.797420][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.797760][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.798085][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.798422][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.798774][ 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) 
[ 22.799082][ T341] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.799391][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.799715][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.800029][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.800352][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.800667][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.800986][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.801296][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.801611][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.802014][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 22.802316][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.802640][ 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) 
[ 22.803026][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.803335][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.803664][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.803982][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.804300][ 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) 
[ 22.804616][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.804939][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 22.805248][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.805639][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.805960][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.806265][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.806594][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.806974][  T341] RIP: 0033:0x7fd245d601e7
[ 22.807294][ 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)
[   22.808397][  T341] RSP: 002b:00007fff2ddb6698 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.808915][  T341] RAX: ffffffffffffffda RBX: 00007fff2ddb6dc0 RCX: 00007fd245d601e7
[   22.809378][  T341] RDX: 0000000000000000 RSI: 00007fff2ddb6700 RDI: 0000000000000005
[   22.809847][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.810315][  T341] R10: 0000000012efd910 R11: 0000000000000246 R12: 0000000000000004
[   22.810792][  T341] R13: 00000000686e726b R14: 0000000000499600 R15: 0000000000000000
| [   23.055292][  T344] ------------[ cut here ]------------
| [ 23.056800][ T344] WARNING: CPU: 1 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.057431][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.058867][  T344] Tainted: [W]=WARN
[   23.059119][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.059526][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.059869][ T344] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.061056][  T344] RSP: 0018:ffffc900004c6ef0 EFLAGS: 00010246
[   23.061463][  T344] RAX: 0000000000000000 RBX: ffff88800d922000 RCX: 0000000000000001
[   23.061957][  T344] RDX: 0000000000000000 RSI: ffffffffb309b939 RDI: ffffffffb28555e0
[   23.062443][  T344] RBP: ffffc900004c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.062967][  T344] R10: ffffc900004c7010 R11: ffffffffb3ea8918 R12: 1ffff92000098de2
[   23.063466][  T344] R13: 00000000000005dc R14: ffffc900004c7010 R15: ffff88800d922f08
[   23.063964][  T344] FS:  00007f2174037800(0000) GS:ffff888081137000(0000) knlGS:0000000000000000
[   23.064543][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.064954][  T344] CR2: 00000000004e5ab0 CR3: 000000000bd60005 CR4: 0000000000772ef0
[   23.065453][  T344] PKRU: 55555554
[   23.065706][  T344] Call Trace:
[   23.065950][  T344]  <TASK>
[ 23.066120][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.066448][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.066798][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.067122][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.067546][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.067874][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.068199][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.068543][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.068998][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.069249][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.069713][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.070090][ T344] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.070430][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.070783][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.071195][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.071540][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.071870][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.072198][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.072549][ T344] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.072872][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.073274][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.073606][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.073931][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.074253][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.074595][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.074936][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.075254][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 23.075592][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.075915][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.076235][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.076642][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.076972][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.077299][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.077625][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.077948][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.078274][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.078612][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.078937][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.079261][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.079595][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.079936][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.080281][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.080621][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.080966][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.081301][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.081631][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.081956][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.082293][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.082630][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.082962][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.083286][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.083620][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.083953][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.084283][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.084613][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.085039][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.085359][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.085689][ T344] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.086094][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.086422][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.086767][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.087097][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.087430][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.087761][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.088090][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.088410][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.088820][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.089157][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.089495][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.089833][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.090249][  T344] RIP: 0033:0x7f21742041e7
[ 23.090606][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.091763][  T344] RSP: 002b:00007ffe2d402d88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.092267][  T344] RAX: ffffffffffffffda RBX: 00007ffe2d4034b0 RCX: 00007f21742041e7
[   23.092763][  T344] RDX: 0000000000000000 RSI: 00007ffe2d402df0 RDI: 0000000000000005
[   23.093251][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.093747][  T344] R10: 000000000dce6910 R11: 0000000000000246 R12: 0000000000000004
[   23.094244][  T344] R13: 00000000686e726b R14: 0000000000499600 R15: 0000000000000000
| [   23.517238][  T347] ------------[ cut here ]------------
| [ 23.517700][ T347] WARNING: CPU: 2 PID: 347 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.518340][  T347] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.519766][  T347] Tainted: [W]=WARN
[   23.520029][  T347] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.520441][ T347] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.520791][ T347] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.522011][  T347] RSP: 0018:ffffc90000687000 EFLAGS: 00010246
[   23.522446][  T347] RAX: 0000000000000000 RBX: ffff88800bbec000 RCX: 0000000000000001
[   23.522939][  T347] RDX: 0000000000000000 RSI: ffffffffb309b939 RDI: ffffffffb28555e0
[   23.523428][  T347] RBP: ffffc900006870e8 R08: ffff88800bbec218 R09: 0000000000000000
[   23.523918][  T347] R10: ffffc90000687118 R11: ffffffffb3579160 R12: 1ffff920000d0e04
[   23.524393][  T347] R13: 00000000000005b6 R14: ffffc90000687118 R15: ffff88800bbec218
[   23.524880][  T347] FS:  00007f971a71e800(0000) GS:ffff8880811b7000(0000) knlGS:0000000000000000
[   23.525484][  T347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.525893][  T347] CR2: 0000000000436890 CR3: 000000000abf4001 CR4: 0000000000772ef0
[   23.526538][  T347] PKRU: 55555554
[   23.526918][  T347] Call Trace:
[   23.527347][  T347]  <TASK>
[ 23.527629][ T347] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.528341][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.528782][ T347] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.529355][ T347] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.529763][ T347] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.530108][ T347] netif_set_mtu (net/core/dev.c:9652) 
[ 23.530472][ T347] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.530828][ T347] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.531161][ T347] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.531431][ T347] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.531770][ T347] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.532103][ T347] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.532449][ T347] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.532873][ T347] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.533204][ T347] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.533583][ T347] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.533911][ T347] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.534238][ T347] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.534585][ T347] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.534920][ T347] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.535253][ T347] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.535598][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.535934][ T347] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.536277][ T347] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.536636][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.536974][ T347] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.537310][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.537663][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.537993][ T347] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.538325][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.538700][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.539038][ T347] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.539377][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.539769][ T347] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.540107][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.540495][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.540830][ T347] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.541164][ T347] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.541500][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.541841][ T347] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.542176][ T347] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.542526][ T347] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.542865][ T347] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.543198][ T347] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.543529][ T347] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.543939][ T347] ___sys_sendmsg (net/socket.c:2670) 
[ 23.544262][ T347] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.544627][ T347] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.544957][ T347] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.545275][ T347] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.545638][ T347] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.545960][ T347] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.546278][ T347] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.546623][ T347] __sys_sendmsg (net/socket.c:2700) 
[ 23.547170][ T347] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.547501][ T347] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.548057][ T347] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.548655][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.548985][ T347] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.549324][ T347] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.549969][  T347] RIP: 0033:0x7f971a8eb1e7
[ 23.550585][ T347] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.551938][  T347] RSP: 002b:00007ffd6b3e3bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.552680][  T347] RAX: ffffffffffffffda RBX: 00007ffd6b3e4300 RCX: 00007f971a8eb1e7
[   23.553153][  T347] RDX: 0000000000000000 RSI: 00007ffd6b3e3c40 RDI: 0000000000000005
[   23.553632][  T347] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.554102][  T347] R10: 00007f971a7e36f8 R11: 0000000000000246 R12: 00007ffd6b3e4320


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