======================================
| [   19.940988][  T315] ip_gre: GRE over IPv4 tunneling driver
| [   20.001118][  T314] ------------[ cut here ]------------
| [ 20.003255][ T314] WARNING: CPU: 0 PID: 314 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) 
| [   20.003974][  T314] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.006187][  T314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.006774][ T314] 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) 
[ 20.007098][ T314] 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
[   20.008801][  T314] RSP: 0018:ffffc90000b97000 EFLAGS: 00010246
[   20.009631][  T314] RAX: 0000000000000000 RBX: ffff888010b44000 RCX: 0000000000000001
[   20.010159][  T314] RDX: 0000000000000000 RSI: ffffffff8e69b941 RDI: ffffffff8de555e0
[   20.011092][  T314] RBP: ffffc90000b970e8 R08: ffff888010b44218 R09: 0000000000000000
[   20.011989][  T314] R10: ffffc90000b97118 R11: ffffffff8eb79160 R12: 1ffff92000172e04
[   20.012950][  T314] R13: 00000000000005b6 R14: ffffc90000b97118 R15: ffff888010b44218
[   20.013757][  T314] FS:  00007f805938f800(0000) GS:ffff8880a5ab7000(0000) knlGS:0000000000000000
[   20.014854][  T314] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.015525][  T314] CR2: 00007f637fcb6000 CR3: 0000000004e36001 CR4: 0000000000772ef0
[   20.016086][  T314] PKRU: 55555554
[   20.016648][  T314] Call Trace:
[   20.016973][  T314]  <TASK>
[ 20.017135][ T314] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.017935][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.018587][ T314] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.019014][ T314] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.019501][ T314] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.019835][ T314] netif_set_mtu (net/core/dev.c:9652) 
[ 20.020782][ T314] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.021117][ T314] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.021585][ T314] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.021844][ T314] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.022154][ T314] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.022484][ T314] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.022967][ T314] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.024060][ T314] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.024594][ T314] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.024908][ T314] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.025242][ T314] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.025798][ T314] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.026110][ T314] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.026435][ T314] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.026823][ T314] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.027143][ T314] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.037777][ T314] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.038107][ T314] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.038430][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.038777][ T314] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.039083][ T314] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.039407][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.039816][ T314] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.040122][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.041113][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.041435][ T314] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.041759][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.042066][ T314] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.042391][ T314] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.042733][ T314] ? 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) 
[ 20.043045][ T314] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.043377][ T314] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.043920][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.044251][ T314] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.044693][ T314] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.045005][ T314] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.045448][ T314] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.045807][ T314] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.046115][ T314] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.046526][ T314] ___sys_sendmsg (net/socket.c:2670) 
[ 20.046844][ T314] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.047148][ T314] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.047468][ T314] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.047782][ T314] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.048100][ T314] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.048423][ T314] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.048761][ T314] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.049086][ T314] __sys_sendmsg (net/socket.c:2700) 
[ 20.049410][ T314] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.049763][ T314] ? 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) 
[ 20.050081][ T314] ? 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) 
[ 20.050405][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.050734][ T314] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.051046][ T314] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.051435][  T314] RIP: 0033:0x7f805955c1e7
[ 20.051773][ T314] Code: Unable to access opcode bytes at 0x7f805955c1bd.

Code starting with the faulting instruction
===========================================
[   20.052179][  T314] RSP: 002b:00007ffd1b14ddf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.052681][  T314] RAX: ffffffffffffffda RBX: 00007ffd1b14e520 RCX: 00007f805955c1e7
[   20.054038][  T314] RDX: 0000000000000000 RSI: 00007ffd1b14de60 RDI: 0000000000000005
[   20.054634][  T314] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.055356][  T314] R10: 00007f80594546f8 R11: 0000000000000246 R12: 00007ffd1b14e540
[   20.056006][  T314] R13: 00000000686e2102 R14: 0000000000499600 R15: 00007ffd1b14df4c
| [   22.787201][  T341] ------------[ cut here ]------------
| [ 22.787523][ T341] WARNING: CPU: 3 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) 
| [   22.788135][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.790106][  T341] Tainted: [W]=WARN
[   22.790354][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.790750][ 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) 
[ 22.791072][ 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
[   22.792305][  T341] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   22.792694][  T341] RAX: 0000000000000000 RBX: ffff888017a82000 RCX: 0000000000000001
[   22.793154][  T341] RDX: 0000000000000000 RSI: ffffffff8e69b941 RDI: ffffffff8de555e0
[   22.793619][  T341] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.794082][  T341] R10: ffffc900005a7010 R11: ffffffff8f4a8918 R12: 1ffff920000b4de2
[   22.794547][  T341] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff888017a82f08
[   22.795004][  T341] FS:  00007f3f2bbe4800(0000) GS:ffff8880a5c37000(0000) knlGS:0000000000000000
[   22.795618][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.796012][  T341] CR2: 00000000004e5aa8 CR3: 000000001052c004 CR4: 0000000000772ef0
[   22.796486][  T341] PKRU: 55555554
[   22.796717][  T341] Call Trace:
[   22.796946][  T341]  <TASK>
[ 22.797106][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.797423][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.797736][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.798041][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.798457][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.798765][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 22.799070][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.799397][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.799820][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.800052][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.800484][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 22.800829][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.801140][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.801458][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.801843][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.802154][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.802470][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.802784][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.803096][ 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) 
[ 22.803412][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.803792][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.804100][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.804418][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.804724][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.805038][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.805401][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.805706][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 22.806013][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.806327][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.806634][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.807010][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.807332][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.807653][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.807956][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.808280][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.808586][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.808889][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.809205][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.809512][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.809821][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.810137][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.810458][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.810767][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.811074][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.811402][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.811706][ 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) 
[ 22.812019][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 22.812343][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.812648][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.812956][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.813273][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.813581][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.813895][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.814216][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.814526][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.814916][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 22.815265][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.815572][ 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) 
[ 22.815952][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.816277][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.816588][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.816907][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.817223][ 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) 
[ 22.817532][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.817843][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 22.818145][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.818536][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.818852][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.819175][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.819485][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.819865][  T341] RIP: 0033:0x7f3f2bdb11e7
[ 22.820189][ 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)
[   22.821295][  T341] RSP: 002b:00007ffd815f1298 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.821765][  T341] RAX: ffffffffffffffda RBX: 00007ffd815f19c0 RCX: 00007f3f2bdb11e7
[   22.822233][  T341] RDX: 0000000000000000 RSI: 00007ffd815f1300 RDI: 0000000000000005
[   22.822695][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   22.823153][  T341] R10: 0000000033835910 R11: 0000000000000246 R12: 0000000000000004
[   22.823631][  T341] R13: 00000000686e2105 R14: 0000000000499600 R15: 0000000000000000
| [   23.085976][  T343] ------------[ cut here ]------------
| [ 23.086342][ 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) 
| [   23.086958][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.089152][  T343] Tainted: [W]=WARN
[   23.089410][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.089802][ 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) 
[ 23.090137][ 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
[   23.091270][  T343] RSP: 0018:ffffc900007f6ef0 EFLAGS: 00010246
[   23.091670][  T343] RAX: 0000000000000000 RBX: ffff888017a82000 RCX: 0000000000000001
[   23.092144][  T343] RDX: 0000000000000000 RSI: ffffffff8e69b941 RDI: ffffffff8de555e0
[   23.092633][  T343] RBP: ffffc900007f6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.093101][  T343] R10: ffffc900007f7010 R11: ffffffff8f4a8918 R12: 1ffff920000fede2
[   23.093580][  T343] R13: 00000000000005dc R14: ffffc900007f7010 R15: ffff888017a82f08
[   23.094047][  T343] FS:  00007fbc5870b800(0000) GS:ffff8880a5bb7000(0000) knlGS:0000000000000000
[   23.094607][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.095014][  T343] CR2: 00000000004e5ab0 CR3: 0000000005163006 CR4: 0000000000772ef0
[   23.095510][  T343] PKRU: 55555554
[   23.095759][  T343] Call Trace:
[   23.096000][  T343]  <TASK>
[ 23.096184][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.096505][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.096832][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.097170][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.097569][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.097892][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.098229][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.098559][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.098997][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.099256][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.099692][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.100049][ T343] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.100390][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.100712][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.101115][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.101447][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.101774][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.102096][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.102428][ 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) 
[ 23.102746][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.103139][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.103500][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.103822][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.104148][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.104479][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.104798][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.105123][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.105477][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.105795][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.106113][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.106515][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.106847][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.107184][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.107504][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.107826][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.108147][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.108473][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.108796][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.109111][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.109443][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.109766][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.110093][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.110424][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.110743][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.111068][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.111396][ 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) 
[ 23.111719][ T343] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.112039][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.112364][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.112687][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.113007][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.113338][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.113664][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.113990][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.114335][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.114741][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.115066][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.115413][ 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) 
[ 23.115807][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.116126][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.116483][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.116806][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.117125][ 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) 
[ 23.117450][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.117777][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.118091][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.118508][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.118840][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.119171][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.119488][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.119889][  T343] RIP: 0033:0x7fbc588d81e7
[ 23.120225][ 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)
[   23.121354][  T343] RSP: 002b:00007ffe9e92dd58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.121826][  T343] RAX: ffffffffffffffda RBX: 00007ffe9e92e480 RCX: 00007fbc588d81e7
[   23.122321][  T343] RDX: 0000000000000000 RSI: 00007ffe9e92ddc0 RDI: 0000000000000005
[   23.122788][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.123274][  T343] R10: 000000003f815910 R11: 0000000000000246 R12: 0000000000000004
[   23.123747][  T343] R13: 00000000686e2105 R14: 0000000000499600 R15: 0000000000000000
| [   23.549041][  T346] ------------[ cut here ]------------
| [ 23.549463][ T346] WARNING: CPU: 3 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) 
| [   23.550078][  T346] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.551464][  T346] Tainted: [W]=WARN
[   23.551695][  T346] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.552073][ 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) 
[ 23.552393][ 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
[   23.553479][  T346] RSP: 0018:ffffc90000677000 EFLAGS: 00010246
[   23.553858][  T346] RAX: 0000000000000000 RBX: ffff8880050f9000 RCX: 0000000000000001
[   23.554313][  T346] RDX: 0000000000000000 RSI: ffffffff8e69b941 RDI: ffffffff8de555e0
[   23.554765][  T346] RBP: ffffc900006770e8 R08: ffff8880050f9218 R09: 0000000000000000
[   23.555275][  T346] R10: ffffc90000677118 R11: ffffffff8eb79160 R12: 1ffff920000cee04
[   23.555725][  T346] R13: 00000000000005b6 R14: ffffc90000677118 R15: ffff8880050f9218
[   23.556184][  T346] FS:  00007eff24ad8800(0000) GS:ffff8880a5c37000(0000) knlGS:0000000000000000
[   23.556709][  T346] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.557092][  T346] CR2: 0000000000436890 CR3: 0000000010843004 CR4: 0000000000772ef0
[   23.557556][  T346] PKRU: 55555554
[   23.557783][  T346] Call Trace:
[   23.558008][  T346]  <TASK>
[ 23.558169][ T346] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.558547][ T346] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.558852][ T346] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.559174][ T346] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.559481][ T346] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.559788][ T346] netif_set_mtu (net/core/dev.c:9652) 
[ 23.560091][ T346] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.560414][ T346] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.560718][ T346] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.560947][ T346] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.561263][ T346] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.561573][ T346] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.561885][ T346] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.562269][ T346] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.562578][ T346] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.562882][ T346] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.563199][ T346] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.563498][ T346] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.563814][ T346] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.564131][ T346] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.564450][ T346] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.564749][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.565072][ T346] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.565426][ T346] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.565736][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.566049][ T346] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.566362][ T346] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.566667][ T346] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.566967][ T346] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.567283][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.567590][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.567896][ T346] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.568205][ T346] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.568509][ T346] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.568827][ T346] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.569149][ 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) 
[ 23.569477][ T346] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.569783][ T346] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.570082][ T346] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.570399][ T346] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.570704][ T346] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.571014][ T346] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.571343][ T346] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.571651][ T346] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.571952][ T346] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.572347][ T346] ___sys_sendmsg (net/socket.c:2670) 
[ 23.572652][ T346] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.572953][ T346] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.573285][ T346] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.573586][ T346] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.573890][ T346] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.574199][ T346] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.574499][ T346] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.574818][ T346] __sys_sendmsg (net/socket.c:2700) 
[ 23.575177][ T346] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.575495][ 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) 
[ 23.575804][ 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) 
[ 23.576108][ T346] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.576419][ T346] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.576721][ T346] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.577091][  T346] RIP: 0033:0x7eff24ca51e7
[ 23.577428][ 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)
[   23.578504][  T346] RSP: 002b:00007ffed7e806e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.578958][  T346] RAX: ffffffffffffffda RBX: 00007ffed7e80e10 RCX: 00007eff24ca51e7
[   23.579434][  T346] RDX: 0000000000000000 RSI: 00007ffed7e80750 RDI: 0000000000000005
[   23.579885][  T346] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.580340][  T346] R10: 00007eff24b9d6f8 R11: 0000000000000246 R12: 00007ffed7e80e30


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