======================================
| [   20.385836][  T312] ip_gre: GRE over IPv4 tunneling driver
| [   20.441049][  T311] ------------[ cut here ]------------
| [ 20.441579][ T311] WARNING: CPU: 0 PID: 311 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) 
| [   20.442526][  T311] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.443599][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.444101][ T311] 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) 
[ 20.444446][ T311] 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
[   20.445681][  T311] RSP: 0018:ffffc90000567000 EFLAGS: 00010246
[   20.446190][  T311] RAX: 0000000000000000 RBX: ffff88800b9c4000 RCX: 0000000000000001
[   20.446778][  T311] RDX: 0000000000000000 RSI: ffffffff9229b941 RDI: ffffffff91a555e0
[   20.447274][  T311] RBP: ffffc900005670e8 R08: ffff88800b9c4218 R09: 0000000000000000
[   20.447745][  T311] R10: ffffc90000567118 R11: ffffffff92779160 R12: 1ffff920000ace04
[   20.448243][  T311] R13: 00000000000005b6 R14: ffffc90000567118 R15: ffff88800b9c4218
[   20.448720][  T311] FS:  00007f087024e800(0000) GS:ffff8880a1eb7000(0000) knlGS:0000000000000000
[   20.449279][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.449674][  T311] CR2: 00007fe740aafe10 CR3: 000000000dd4e005 CR4: 0000000000772ef0
[   20.450176][  T311] PKRU: 55555554
[   20.450416][  T311] Call Trace:
[   20.450652][  T311]  <TASK>
[ 20.451006][ T311] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.451409][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.451726][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.452059][ T311] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.452385][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.452714][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 20.453045][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.453384][ T311] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.453701][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.453954][ T311] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.454319][ T311] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.454659][ T311] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.455161][ T311] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.455584][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.455976][ T311] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.456306][ T311] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.456639][ T311] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.456977][ T311] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.457314][ T311] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.457645][ T311] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.457995][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.458323][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.458660][ T311] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.459016][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.459353][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.459710][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.460065][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.460399][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.460754][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.461078][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.461404][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.461721][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.462046][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.462361][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.462691][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.463236][ T311] ? 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) 
[ 20.463556][ T311] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.463891][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.464206][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.464524][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.464849][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.465165][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.465487][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.465819][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.466133][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.466533][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 20.466857][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.467173][ T311] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.467493][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.467816][ T311] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.468137][ T311] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.468936][ T311] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.469788][ T311] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.470136][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 20.470932][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.471245][ T311] ? 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) 
[ 20.471568][ T311] ? 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) 
[ 20.471894][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.472234][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.472555][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.472949][  T311] RIP: 0033:0x7f087041b1e7
[ 20.473281][ T311] Code: Unable to access opcode bytes at 0x7f087041b1bd.

Code starting with the faulting instruction
===========================================
[   20.473688][  T311] RSP: 002b:00007ffef3972ac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.474403][  T311] RAX: ffffffffffffffda RBX: 00007ffef39731f0 RCX: 00007f087041b1e7
[   20.475165][  T311] RDX: 0000000000000000 RSI: 00007ffef3972b30 RDI: 0000000000000005
[   20.475668][  T311] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.476190][  T311] R10: 00007f08703136f8 R11: 0000000000000246 R12: 00007ffef3973210
[   20.476672][  T311] R13: 00000000686e3c78 R14: 0000000000499600 R15: 00007ffef3972c1c
| [   23.452506][  T339] ------------[ cut here ]------------
| [ 23.452907][ T339] WARNING: CPU: 3 PID: 339 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) 
| [   23.453719][  T339] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.455496][  T339] Tainted: [W]=WARN
[   23.455773][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.456244][ T339] 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) 
[ 23.456667][ T339] 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
[   23.459493][  T339] RSP: 0018:ffffc90000646ef0 EFLAGS: 00010246
[   23.460346][  T339] RAX: 0000000000000000 RBX: ffff88800df4a000 RCX: 0000000000000001
[   23.460869][  T339] RDX: 0000000000000000 RSI: ffffffff9229b941 RDI: ffffffff91a555e0
[   23.461592][  T339] RBP: ffffc90000646fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.462152][  T339] R10: ffffc90000647010 R11: ffffffff930a8918 R12: 1ffff920000c8de2
[   23.462899][  T339] R13: 00000000000005dc R14: ffffc90000647010 R15: ffff88800df4af08
[   23.463621][  T339] FS:  00007ff2c8981800(0000) GS:ffff8880a2037000(0000) knlGS:0000000000000000
[   23.464394][  T339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.464999][  T339] CR2: 00000000004e5aa8 CR3: 000000000a693006 CR4: 0000000000772ef0
[   23.465494][  T339] PKRU: 55555554
[   23.465739][  T339] Call Trace:
[   23.466076][  T339]  <TASK>
[ 23.466296][ T339] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.466767][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.467228][ T339] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.467717][ T339] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.468239][ T339] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.468668][ T339] netif_set_mtu (net/core/dev.c:9652) 
[ 23.469146][ T339] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.469556][ T339] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.470074][ T339] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.470405][ T339] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.471144][ T339] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.471580][ T339] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.471994][ T339] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.472444][ T339] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.473049][ T339] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.473466][ T339] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.473939][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.474308][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.474722][ T339] ? __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) 
[ 23.475249][ T339] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.475751][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.476145][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.476469][ T339] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.476890][ T339] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.477291][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.477615][ T339] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.478038][ T339] ? __create_object (mm/kmemleak.c:771) 
[ 23.478425][ T339] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.478980][ T339] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.479498][ T339] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.480016][ T339] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.480348][ T339] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.480883][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.481249][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.481638][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.481964][ T339] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.482430][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.482940][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.483329][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.483825][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.484216][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.484596][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.485014][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.485470][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.485919][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.486301][ T339] ? 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) 
[ 23.486832][ T339] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.487210][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.487608][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.488097][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.488410][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.488733][ T339] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.489155][ T339] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.489572][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.489905][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.490420][ T339] ___sys_sendmsg (net/socket.c:2670) 
[ 23.490744][ T339] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.491161][ T339] ? __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) 
[ 23.491671][ T339] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.492031][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.492447][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.492966][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.493316][ T339] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.493709][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.494052][ T339] __sys_sendmsg (net/socket.c:2700) 
[ 23.494447][ T339] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.494879][ T339] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.495214][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.495526][ T339] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.495879][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.496353][  T339] RIP: 0033:0x7ff2c8b4e1e7
[ 23.496720][ T339] 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)
[   23.498296][  T339] RSP: 002b:00007ffea313b048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.498882][  T339] RAX: ffffffffffffffda RBX: 00007ffea313b770 RCX: 00007ff2c8b4e1e7
[   23.499465][  T339] RDX: 0000000000000000 RSI: 00007ffea313b0b0 RDI: 0000000000000005
[   23.500328][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.501160][  T339] R10: 000000000c162910 R11: 0000000000000246 R12: 0000000000000004
[   23.501845][  T339] R13: 00000000686e3c7c R14: 0000000000499600 R15: 0000000000000000
| [   23.758986][  T341] ------------[ cut here ]------------
| [ 23.759452][ 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) 
| [   23.760270][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.761758][  T341] Tainted: [W]=WARN
[   23.762009][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.762403][ 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) 
[ 23.762729][ 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
[   23.763840][  T341] RSP: 0018:ffffc90000566ef0 EFLAGS: 00010246
[   23.764242][  T341] RAX: 0000000000000000 RBX: ffff88800df4a000 RCX: 0000000000000001
[   23.764712][  T341] RDX: 0000000000000000 RSI: ffffffff9229b941 RDI: ffffffff91a555e0
[   23.765193][  T341] RBP: ffffc90000566fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.765671][  T341] R10: ffffc90000567010 R11: ffffffff930a8918 R12: 1ffff920000acde2
[   23.766161][  T341] R13: 00000000000005dc R14: ffffc90000567010 R15: ffff88800df4af08
[   23.766631][  T341] FS:  00007f24a5870800(0000) GS:ffff8880a1fb7000(0000) knlGS:0000000000000000
[   23.767190][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.767586][  T341] CR2: 00000000004e5ab0 CR3: 000000000dde5001 CR4: 0000000000772ef0
[   23.768072][  T341] PKRU: 55555554
[   23.768319][  T341] Call Trace:
[   23.768562][  T341]  <TASK>
[ 23.768734][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.769064][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.769388][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.769719][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.770128][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.770452][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.770771][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.771109][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.771544][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.771790][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.772225][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.772587][ T341] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.772956][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.773287][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.773685][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.774014][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.774427][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.774769][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.775120][ 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) 
[ 23.775457][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.775857][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.776197][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.776517][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.776851][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.777172][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.777500][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.777829][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.778160][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.778483][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.778818][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.779215][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.779545][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.779907][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.780240][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.780569][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.780905][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.781224][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.781558][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.781889][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.782216][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.782544][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.782881][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.783212][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.783566][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.783915][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.784238][ 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) 
[ 23.784561][ T341] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.784907][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.785251][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.785584][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.785920][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.786269][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.786618][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.786962][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.787283][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.787695][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.788031][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.788355][ 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) 
[ 23.788758][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.789095][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.789426][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.789772][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.790111][ 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) 
[ 23.790432][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.790761][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.791095][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.791504][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.791849][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.792174][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.792518][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.792929][  T341] RIP: 0033:0x7f24a5a3d1e7
[ 23.793264][ 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)
[   23.794423][  T341] RSP: 002b:00007ffe5af720e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.794935][  T341] RAX: ffffffffffffffda RBX: 00007ffe5af72810 RCX: 00007f24a5a3d1e7
[   23.795424][  T341] RDX: 0000000000000000 RSI: 00007ffe5af72150 RDI: 0000000000000005
[   23.795910][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.796390][  T341] R10: 0000000023741910 R11: 0000000000000246 R12: 0000000000000004
[   23.796893][  T341] R13: 00000000686e3c7c R14: 0000000000499600 R15: 0000000000000000
| [   24.200506][  T344] ------------[ cut here ]------------
| [ 24.200933][ T344] WARNING: CPU: 2 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) 
| [   24.201598][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.203077][  T344] Tainted: [W]=WARN
[   24.203336][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.203755][ 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) 
[ 24.204111][ T344] 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
[   24.205311][  T344] RSP: 0018:ffffc900005a7000 EFLAGS: 00010246
[   24.205738][  T344] RAX: 0000000000000000 RBX: ffff88800a1e4000 RCX: 0000000000000001
[   24.206242][  T344] RDX: 0000000000000000 RSI: ffffffff9229b941 RDI: ffffffff91a555e0
[   24.206741][  T344] RBP: ffffc900005a70e8 R08: ffff88800a1e4218 R09: 0000000000000000
[   24.207260][  T344] R10: ffffc900005a7118 R11: ffffffff92779160 R12: 1ffff920000b4e04
[   24.207759][  T344] R13: 00000000000005b6 R14: ffffc900005a7118 R15: ffff88800a1e4218
[   24.208265][  T344] FS:  00007ff227d1c800(0000) GS:ffff8880a1fb7000(0000) knlGS:0000000000000000
[   24.208851][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.209275][  T344] CR2: 0000000000436890 CR3: 0000000010878005 CR4: 0000000000772ef0
[   24.209798][  T344] PKRU: 55555554
[   24.210074][  T344] Call Trace:
[   24.210331][  T344]  <TASK>
[ 24.210508][ T344] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.210934][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.211274][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.211615][ T344] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 24.211965][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.212320][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 24.212672][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.213031][ T344] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 24.213371][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.213629][ T344] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.213984][ T344] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.214326][ T344] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.214675][ T344] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.215107][ T344] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.215451][ T344] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.215789][ T344] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 24.216135][ T344] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.216462][ T344] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.216800][ T344] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.217153][ T344] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.217497][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.217839][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.218192][ T344] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.218538][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.218891][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.219240][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.219576][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.219951][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.220289][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.220630][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.220980][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.221335][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.221671][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.222025][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.222383][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.222717][ 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) 
[ 24.223069][ T344] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 24.223410][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.223750][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.224098][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.224438][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.224780][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.225136][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.225475][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.225818][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.226247][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 24.226573][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.226920][ T344] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.227266][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.227605][ T344] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.227961][ T344] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.228302][ T344] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.228640][ T344] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.229011][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 24.229350][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.229699][ T344] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 24.230049][ T344] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 24.230391][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.230728][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.231073][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.231481][  T344] RIP: 0033:0x7ff227ee91e7
[ 24.231834][ 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)
[   24.233012][  T344] RSP: 002b:00007ffc21bc67e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.233510][  T344] RAX: ffffffffffffffda RBX: 00007ffc21bc6f10 RCX: 00007ff227ee91e7
[   24.234011][  T344] RDX: 0000000000000000 RSI: 00007ffc21bc6850 RDI: 0000000000000005
[   24.234513][  T344] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   24.235007][  T344] R10: 00007ff227de16f8 R11: 0000000000000246 R12: 00007ffc21bc6f30


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