======================================
| [   20.373327][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.430029][  T312] ------------[ cut here ]------------
| [ 20.432082][ T312] WARNING: CPU: 2 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) 
| [   20.432782][  T312] Modules linked in: ip_gre gre vrf veth
[   20.433798][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.434230][ 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) 
[ 20.434597][ 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
[   20.435757][  T312] RSP: 0018:ffffc900006a7000 EFLAGS: 00010246
[   20.436188][  T312] RAX: 0000000000000000 RBX: ffff888012e8c000 RCX: 0000000000000001
[   20.436696][  T312] RDX: 0000000000000000 RSI: ffffffff9f89b939 RDI: ffffffff9f0555e0
[   20.437199][  T312] RBP: ffffc900006a70e8 R08: ffff888012e8c218 R09: 0000000000000000
[   20.437710][  T312] R10: ffffc900006a7118 R11: ffffffff9fd79160 R12: 1ffff920000d4e04
[   20.438211][  T312] R13: 00000000000005b6 R14: ffffc900006a7118 R15: ffff888012e8c218
[   20.438720][  T312] FS:  00007fc9ca6d9800(0000) GS:ffff8880949b7000(0000) knlGS:0000000000000000
[   20.439323][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.439767][  T312] CR2: 00007f89632bf000 CR3: 0000000012df6003 CR4: 0000000000772ef0
[   20.440245][  T312] PKRU: 55555554
[   20.440505][  T312] Call Trace:
[   20.440750][  T312]  <TASK>
[ 20.440928][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.441333][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.441675][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.442001][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.442595][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.442925][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.443259][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.443620][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.443966][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.444224][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.444587][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.444960][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.445301][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.445725][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.446069][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.446414][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.446756][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.447088][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.447433][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.447773][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.448113][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.448448][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.448789][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.449139][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.449484][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.449828][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.450157][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.450504][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.450914][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.451244][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.451574][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.451907][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.452231][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.452564][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.452905][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.453231][ 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) 
[ 20.453570][ T312] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.453900][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.454263][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.454619][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.454952][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.455278][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.455629][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.455980][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.456318][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.456754][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.457082][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.457414][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.457747][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.458064][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.458398][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.458722][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.459044][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.463669][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.464008][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.464337][ 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) 
[ 20.464708][ 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) 
[ 20.465034][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.465368][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.465716][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.466109][  T312] RIP: 0033:0x7fc9ca8a61e7
[ 20.466485][ T312] Code: Unable to access opcode bytes at 0x7fc9ca8a61bd.

Code starting with the faulting instruction
===========================================
[   20.466895][  T312] RSP: 002b:00007ffe7ae8cea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.467401][  T312] RAX: ffffffffffffffda RBX: 00007ffe7ae8d5d0 RCX: 00007fc9ca8a61e7
[   20.467883][  T312] RDX: 0000000000000000 RSI: 00007ffe7ae8cf10 RDI: 0000000000000005
[   20.469095][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.469591][  T312] R10: 00007fc9ca79e6f8 R11: 0000000000000246 R12: 00007ffe7ae8d5f0
[   20.470298][  T312] R13: 00000000686e6679 R14: 0000000000499600 R15: 00007ffe7ae8cffc
| [   23.326434][  T340] ------------[ cut here ]------------
| [ 23.326903][ T340] WARNING: CPU: 0 PID: 340 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.328071][  T340] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall sch_ingress ip_gre gre vrf veth
| [   23.329606][  T340] Tainted: [W]=WARN
[   23.329865][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.330268][ T340] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.330614][ T340] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.331793][  T340] RSP: 0018:ffffc90000ae6ef0 EFLAGS: 00010246
[   23.332203][  T340] RAX: 0000000000000000 RBX: ffff888011832000 RCX: 0000000000000001
[   23.332695][  T340] RDX: 0000000000000000 RSI: ffffffff9f89b939 RDI: ffffffff9f0555e0
[   23.333183][  T340] RBP: ffffc90000ae6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.333682][  T340] R10: ffffc90000ae7010 R11: ffffffffa06a8918 R12: 1ffff9200015cde2
[   23.334166][  T340] R13: 00000000000005dc R14: ffffc90000ae7010 R15: ffff888011832f08
[   23.334677][  T340] FS:  00007fbf3d9ae800(0000) GS:ffff8880948b7000(0000) knlGS:0000000000000000
[   23.335243][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.335688][  T340] CR2: 00000000004e5aa8 CR3: 000000001117e002 CR4: 0000000000772ef0
[   23.336186][  T340] PKRU: 55555554
[   23.336442][  T340] Call Trace:
[   23.336690][  T340]  <TASK>
[ 23.336874][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.337199][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.337541][ T340] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.337880][ T340] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.338297][ T340] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.338633][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 23.338957][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.339309][ T340] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.339782][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.340052][ T340] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.340522][ T340] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.340925][ T340] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.341268][ T340] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.341617][ T340] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.342038][ T340] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.342363][ T340] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.342705][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.343033][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.343373][ T340] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.343713][ T340] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.344126][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.344472][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.344816][ T340] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.345146][ T340] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.345479][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.345804][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.346122][ T340] ? __create_object (mm/kmemleak.c:771) 
[ 23.346482][ T340] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.346822][ T340] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.347165][ T340] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.347586][ T340] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.347946][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.348290][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.348625][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.348984][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.349322][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.349658][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.349997][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.350333][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.350699][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.351048][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.351377][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.351717][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.352039][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.352403][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.352734][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.353081][ T340] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.353441][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.353764][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.354107][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.354457][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.354808][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.355159][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.355514][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.355848][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.356261][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 23.356608][ T340] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.356959][ T340] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.357363][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.357710][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.358053][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.358401][ T340] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.358740][ T340] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.359072][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.359428][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 23.359751][ T340] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.360162][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.360542][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.360879][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.361211][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.361623][  T340] RIP: 0033:0x7fbf3db7b1e7
[ 23.361979][ T340] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.363175][  T340] RSP: 002b:00007ffddfcd1b18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.363674][  T340] RAX: ffffffffffffffda RBX: 00007ffddfcd2240 RCX: 00007fbf3db7b1e7
[   23.364163][  T340] RDX: 0000000000000000 RSI: 00007ffddfcd1b80 RDI: 0000000000000005
[   23.364669][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.365162][  T340] R10: 0000000019d6e910 R11: 0000000000000246 R12: 0000000000000004
[   23.365661][  T340] R13: 00000000686e667c R14: 0000000000499600 R15: 0000000000000000
| [   23.691370][  T343] ------------[ cut here ]------------
| [ 23.691788][ T343] WARNING: CPU: 1 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) 
| [   23.693452][  T343] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall sch_ingress ip_gre gre vrf veth
| [   23.694857][  T343] Tainted: [W]=WARN
[   23.695101][  T343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.695502][ 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) 
[ 23.695823][ T343] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.696965][  T343] RSP: 0018:ffffc900005b6ef0 EFLAGS: 00010246
[   23.697355][  T343] RAX: 0000000000000000 RBX: ffff888011832000 RCX: 0000000000000001
[   23.697845][  T343] RDX: 0000000000000000 RSI: ffffffff9f89b939 RDI: ffffffff9f0555e0
[   23.698331][  T343] RBP: ffffc900005b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.698793][  T343] R10: ffffc900005b7010 R11: ffffffffa06a8918 R12: 1ffff920000b6de2
[   23.699268][  T343] R13: 00000000000005dc R14: ffffc900005b7010 R15: ffff888011832f08
[   23.699747][  T343] FS:  00007fb7337af800(0000) GS:ffff888094937000(0000) knlGS:0000000000000000
[   23.700299][  T343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.700701][  T343] CR2: 00000000004e5ab0 CR3: 0000000004f7e001 CR4: 0000000000772ef0
[   23.701177][  T343] PKRU: 55555554
[   23.701420][  T343] Call Trace:
[   23.701673][  T343]  <TASK>
[ 23.701840][ T343] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.702163][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.702534][ T343] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.702864][ T343] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.703244][ T343] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.703582][ T343] netif_set_mtu (net/core/dev.c:9652) 
[ 23.703888][ T343] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.704214][ T343] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.704692][ T343] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.704932][ T343] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.705356][ T343] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.705751][ T343] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.706081][ T343] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.706419][ T343] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.706808][ T343] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.707129][ T343] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.707467][ T343] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.707796][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.708111][ 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) 
[ 23.708445][ T343] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.708832][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.709138][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.709450][ T343] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.709755][ T343] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.710060][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.710365][ T343] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.710687][ T343] ? __create_object (mm/kmemleak.c:771) 
[ 23.711020][ T343] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.711339][ T343] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.711709][ T343] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.712100][ T343] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.712422][ T343] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.712732][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.713043][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.713370][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.713688][ T343] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.714001][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.714309][ T343] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.714653][ T343] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.714973][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.715283][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.715630][ T343] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.715937][ T343] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.716253][ T343] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.716594][ T343] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.716900][ 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) 
[ 23.717208][ T343] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.717540][ T343] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.717853][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.718163][ T343] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.718486][ T343] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.718791][ T343] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.719106][ T343] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.719445][ T343] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.719751][ T343] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.720169][ T343] ___sys_sendmsg (net/socket.c:2670) 
[ 23.720483][ T343] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.720789][ 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) 
[ 23.721183][ T343] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.721519][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.721830][ T343] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.722139][ T343] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.722476][ 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) 
[ 23.722785][ T343] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.723095][ T343] __sys_sendmsg (net/socket.c:2700) 
[ 23.723417][ T343] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.723822][ T343] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.724137][ T343] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.724471][ T343] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.724782][ T343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.725161][  T343] RIP: 0033:0x7fb73397c1e7
[ 23.725500][ 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)
[   23.726590][  T343] RSP: 002b:00007fffd50c4f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.727054][  T343] RAX: ffffffffffffffda RBX: 00007fffd50c5630 RCX: 00007fb73397c1e7
[   23.727524][  T343] RDX: 0000000000000000 RSI: 00007fffd50c4f70 RDI: 0000000000000005
[   23.727982][  T343] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.728446][  T343] R10: 0000000036a3b910 R11: 0000000000000246 R12: 0000000000000004
[   23.728929][  T343] R13: 00000000686e667c R14: 0000000000499600 R15: 0000000000000000
| [   26.122120][  T365] ------------[ cut here ]------------
| [ 26.122791][ T365] WARNING: CPU: 2 PID: 365 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) 
| [   26.123469][  T365] Modules linked in: dummy bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall sch_ingress ip_gre gre vrf veth
| [   26.125821][  T365] Tainted: [W]=WARN
[   26.126240][  T365] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 26.126968][ T365] 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) 
[ 26.127566][ T365] 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
[   26.129232][  T365] RSP: 0018:ffffc90000687000 EFLAGS: 00010246
[   26.129657][  T365] RAX: 0000000000000000 RBX: ffff888011821000 RCX: 0000000000000001
[   26.130146][  T365] RDX: 0000000000000000 RSI: ffffffff9f89b939 RDI: ffffffff9f0555e0
[   26.130629][  T365] RBP: ffffc900006870e8 R08: ffff888011821218 R09: 0000000000000000
[   26.131120][  T365] R10: ffffc90000687118 R11: ffff8880105745e0 R12: 1ffff920000d0e04
[   26.131604][  T365] R13: 00000000000005b6 R14: ffffc90000687118 R15: ffff888011821218
[   26.132102][  T365] FS:  00007fa7d8d38800(0000) GS:ffff8880949b7000(0000) knlGS:0000000000000000
[   26.132662][  T365] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.133081][  T365] CR2: 00007f56c14f1a00 CR3: 00000000156c4005 CR4: 0000000000772ef0
[   26.133567][  T365] PKRU: 55555554
[   26.133895][  T365] Call Trace:
[   26.134146][  T365]  <TASK>
[ 26.134318][ T365] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 26.134774][ T365] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 26.135102][ T365] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.135517][ T365] netif_set_mtu (net/core/dev.c:9652) 
[ 26.135849][ T365] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 26.136179][ T365] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 26.136514][ T365] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 26.136779][ T365] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 26.137111][ T365] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 26.137454][ T365] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 26.137798][ T365] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 26.138187][ T365] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 26.138527][ T365] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 26.138863][ T365] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 26.139187][ T365] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 26.139526][ T365] ? __dev_get_by_name (net/core/dev.c:865) 
[ 26.139863][ T365] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 26.140184][ T365] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 26.140529][ T365] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 26.140870][ T365] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 26.141196][ T365] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 26.141546][ T365] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 26.142002][ T365] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 26.142368][ T365] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 26.142696][ T365] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.143034][ T365] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 26.143353][ T365] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 26.143684][ T365] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 26.144023][ T365] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.144351][ T365] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 26.144707][ T365] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 26.145049][ T365] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 26.145380][ T365] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 26.145719][ T365] ? 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) 
[ 26.146044][ T365] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 26.146372][ T365] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 26.146700][ T365] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.147048][ T365] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 26.147370][ T365] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 26.147706][ T365] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 26.148047][ T365] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 26.148376][ T365] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 26.148709][ T365] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 26.149134][ T365] ___sys_sendmsg (net/socket.c:2670) 
[ 26.149471][ T365] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 26.149851][ T365] ? __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) 
[ 26.150330][ T365] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 26.150675][ T365] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.151022][ T365] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.151348][ T365] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.151684][ T365] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 26.152028][ T365] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.152354][ T365] __sys_sendmsg (net/socket.c:2700) 
[ 26.152684][ T365] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 26.153089][ T365] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 26.153432][ T365] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.153775][ T365] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 26.154100][ T365] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.154527][  T365] RIP: 0033:0x7fa7d8f051e7
[ 26.154881][ T365] 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)
[   26.156006][  T365] RSP: 002b:00007fffa63fa3b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   26.156491][  T365] RAX: ffffffffffffffda RBX: 00007fffa63faae0 RCX: 00007fa7d8f051e7
[   26.156984][  T365] RDX: 0000000000000000 RSI: 00007fffa63fa420 RDI: 0000000000000005
[   26.157468][  T365] RBP: 000000000000000a R08: 00000000000000b4 R09: 0000000000000078
[   26.157964][  T365] R10: 00007fa7d8e02ee8 R11: 0000000000000246 R12: 00007fffa63fab00


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