======================================
| [  336.806325][ T1831] ip_gre: GRE over IPv4 tunneling driver
| [  336.917557][ T1830] ------------[ cut here ]------------
| [ 336.918066][ T1830] WARNING: CPU: 3 PID: 1830 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) 
| [  336.918708][ T1830] Modules linked in: ip_gre gre sch_ingress vrf veth
[  336.919734][ T1830] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 336.920126][ T1830] 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) 
[ 336.920453][ T1830] 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
[  336.921568][ T1830] RSP: 0018:ffffc90000767000 EFLAGS: 00010246
[  336.921989][ T1830] RAX: 0000000000000000 RBX: ffff888002834000 RCX: 0000000000000001
[  336.922460][ T1830] RDX: 0000000000000000 RSI: ffffffff94e9b941 RDI: ffffffff946555e0
[  336.922934][ T1830] RBP: ffffc900007670e8 R08: ffff888002834218 R09: 0000000000000000
[  336.923404][ T1830] R10: ffffc90000767118 R11: ffffffff95379160 R12: 1ffff920000ece04
[  336.923885][ T1830] R13: 00000000000005b6 R14: ffffc90000767118 R15: ffff888002834218
[  336.924384][ T1830] FS:  00007fa8fa6bc800(0000) GS:ffff88809f437000(0000) knlGS:0000000000000000
[  336.924936][ T1830] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  336.925667][ T1830] CR2: 000055ee04769ec8 CR3: 000000000dbe4001 CR4: 0000000000772ef0
[  336.926138][ T1830] PKRU: 55555554
[  336.926405][ T1830] Call Trace:
[  336.926651][ T1830]  <TASK>
[ 336.926813][ T1830] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 336.927209][ T1830] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 336.927533][ T1830] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 336.927863][ T1830] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 336.928188][ T1830] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 336.928514][ T1830] netif_set_mtu (net/core/dev.c:9652) 
[ 336.928838][ T1830] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 336.929156][ T1830] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 336.929469][ T1830] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 336.929713][ T1830] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 336.930025][ T1830] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 336.930347][ T1830] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 336.930670][ T1830] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 336.931053][ T1830] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 336.931371][ T1830] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 336.931686][ T1830] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 336.931998][ T1830] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 336.932306][ T1830] ? __dev_get_by_name (net/core/dev.c:865) 
[ 336.932624][ T1830] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 336.932931][ T1830] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 336.933240][ T1830] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 336.933545][ T1830] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 336.933868][ T1830] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 336.934184][ T1830] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 336.934505][ T1830] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 336.934832][ T1830] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 336.935136][ T1830] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 336.935444][ T1830] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 336.935980][ T1830] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 336.936289][ T1830] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 336.936607][ T1830] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 336.936917][ T1830] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 336.937230][ T1830] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 336.937815][ T1830] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 336.938353][ T1830] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 336.938669][ T1830] ? 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) 
[ 336.938976][ T1830] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 336.939282][ T1830] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 336.939822][ T1830] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 336.940135][ T1830] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 336.940445][ T1830] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 336.940980][ T1830] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 336.941305][ T1830] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 336.941853][ T1830] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 336.942159][ T1830] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 336.942550][ T1830] ___sys_sendmsg (net/socket.c:2670) 
[ 336.942871][ T1830] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 336.943173][ T1830] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 336.943488][ T1830] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 336.943796][ T1830] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 336.944105][ T1830] ? __handle_mm_fault (mm/memory.c:6212) 
[ 336.944418][ T1830] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 336.944738][ T1830] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 336.945061][ T1830] __sys_sendmsg (net/socket.c:2700) 
[ 336.945365][ T1830] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 336.945678][ T1830] ? 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) 
[ 336.945993][ T1830] ? 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) 
[ 336.946302][ T1830] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 336.946630][ T1830] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 336.946938][ T1830] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  336.947321][ T1830] RIP: 0033:0x7fa8fa8891e7
[ 336.947661][ T1830] Code: Unable to access opcode bytes at 0x7fa8fa8891bd.

Code starting with the faulting instruction
===========================================
[  336.948291][ T1830] RSP: 002b:00007fff65418a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  336.948761][ T1830] RAX: ffffffffffffffda RBX: 00007fff65419170 RCX: 00007fa8fa8891e7
[  336.949222][ T1830] RDX: 0000000000000000 RSI: 00007fff65418ab0 RDI: 0000000000000005
[  336.949690][ T1830] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[  336.950610][ T1830] R10: 00007fa8fa7816f8 R11: 0000000000000246 R12: 00007fff65419190
[  336.951066][ T1830] R13: 00000000686e0fcb R14: 0000000000499600 R15: 00007fff65418b9c
| [  339.822992][ T1861] ------------[ cut here ]------------
| [ 339.823359][ T1861] WARNING: CPU: 2 PID: 1861 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) 
| [  339.824944][ T1861] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [  339.826518][ T1861] Tainted: [W]=WARN
[  339.826800][ T1861] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 339.827249][ T1861] 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) 
[ 339.827596][ T1861] 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
[  339.828994][ T1861] RSP: 0018:ffffc90000616ef0 EFLAGS: 00010246
[  339.829398][ T1861] RAX: 0000000000000000 RBX: ffff8880093a2000 RCX: 0000000000000001
[  339.829893][ T1861] RDX: 0000000000000000 RSI: ffffffff94e9b941 RDI: ffffffff946555e0
[  339.830375][ T1861] RBP: ffffc90000616fe0 R08: 0000000000000000 R09: 0000000000000000
[  339.830882][ T1861] R10: ffffc90000617010 R11: ffffffff95ca8918 R12: 1ffff920000c2de2
[  339.831366][ T1861] R13: 00000000000005dc R14: ffffc90000617010 R15: ffff8880093a2f08
[  339.831873][ T1861] FS:  00007f5baa53b800(0000) GS:ffff88809f3b7000(0000) knlGS:0000000000000000
[  339.832438][ T1861] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  339.832858][ T1861] CR2: 00000000004e5aa8 CR3: 000000000e57a006 CR4: 0000000000772ef0
[  339.833330][ T1861] PKRU: 55555554
[  339.833582][ T1861] Call Trace:
[  339.833828][ T1861]  <TASK>
[ 339.834008][ T1861] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 339.834361][ T1861] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 339.834711][ T1861] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 339.835034][ T1861] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 339.835429][ T1861] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 339.835764][ T1861] netif_set_mtu (net/core/dev.c:9652) 
[ 339.836081][ T1861] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 339.836419][ T1861] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 339.836872][ T1861] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 339.837120][ T1861] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 339.837569][ T1861] br_add_if (net/bridge/br_if.c:697) bridge 
[ 339.837965][ T1861] do_set_master (net/core/rtnetlink.c:2948) 
[ 339.838289][ T1861] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 339.838650][ T1861] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 339.839075][ T1861] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 339.839411][ T1861] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 339.839743][ T1861] ? __kernel_text_address (kernel/extable.c:79) 
[ 339.840089][ T1861] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 339.840410][ T1861] ? __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) 
[ 339.840743][ T1861] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 339.841142][ T1861] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 339.841467][ T1861] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 339.841862][ T1861] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 339.842189][ T1861] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 339.842527][ T1861] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 339.842889][ T1861] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 339.843211][ T1861] ? __create_object (mm/kmemleak.c:771) 
[ 339.843551][ T1861] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 339.843912][ T1861] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 339.844237][ T1861] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 339.844660][ T1861] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 339.844995][ T1861] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 339.845318][ T1861] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 339.845664][ T1861] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 339.846011][ T1861] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 339.846333][ T1861] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 339.846688][ T1861] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 339.847010][ T1861] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 339.847341][ T1861] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 339.847690][ T1861] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 339.848046][ T1861] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 339.848385][ T1861] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 339.848717][ T1861] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 339.849048][ T1861] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 339.849379][ T1861] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 339.849726][ T1861] ? 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) 
[ 339.850046][ T1861] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 339.850383][ T1861] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 339.850713][ T1861] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 339.851039][ T1861] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 339.851371][ T1861] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 339.851720][ T1861] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 339.852050][ T1861] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 339.852377][ T1861] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 339.852708][ T1861] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 339.853113][ T1861] ___sys_sendmsg (net/socket.c:2670) 
[ 339.853428][ T1861] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 339.853779][ T1861] ? __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) 
[ 339.854178][ T1861] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 339.854534][ T1861] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 339.854896][ T1861] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 339.855236][ T1861] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 339.855554][ T1861] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 339.855888][ T1861] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 339.856224][ T1861] __sys_sendmsg (net/socket.c:2700) 
[ 339.856552][ T1861] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 339.856956][ T1861] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 339.857289][ T1861] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 339.857624][ T1861] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 339.857946][ T1861] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  339.858338][ T1861] RIP: 0033:0x7f5baa7081e7
[ 339.858704][ T1861] 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)
[  339.859873][ T1861] RSP: 002b:00007ffe658f0298 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  339.860367][ T1861] RAX: ffffffffffffffda RBX: 00007ffe658f09c0 RCX: 00007f5baa7081e7
[  339.860853][ T1861] RDX: 0000000000000000 RSI: 00007ffe658f0300 RDI: 0000000000000005
[  339.861349][ T1861] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  339.861846][ T1861] R10: 000000003d546910 R11: 0000000000000246 R12: 0000000000000004
[  339.862356][ T1861] R13: 00000000686e0fce R14: 0000000000499600 R15: 0000000000000000
| [  340.124184][ T1863] ------------[ cut here ]------------
| [ 340.124517][ T1863] WARNING: CPU: 3 PID: 1863 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) 
| [  340.125135][ T1863] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [  340.126490][ T1863] Tainted: [W]=WARN
[  340.126979][ T1863] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 340.127364][ T1863] 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) 
[ 340.127829][ T1863] 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
[  340.129144][ T1863] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[  340.129536][ T1863] RAX: 0000000000000000 RBX: ffff8880093a2000 RCX: 0000000000000001
[  340.130182][ T1863] RDX: 0000000000000000 RSI: ffffffff94e9b941 RDI: ffffffff946555e0
[  340.130790][ T1863] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[  340.131257][ T1863] R10: ffffc90000577010 R11: ffffffff95ca8918 R12: 1ffff920000aede2
[  340.131880][ T1863] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff8880093a2f08
[  340.132334][ T1863] FS:  00007fc9aa5a3800(0000) GS:ffff88809f437000(0000) knlGS:0000000000000000
[  340.132963][ T1863] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  340.133357][ T1863] CR2: 00000000004e5ab0 CR3: 000000000a732002 CR4: 0000000000772ef0
[  340.133825][ T1863] PKRU: 55555554
[  340.134058][ T1863] Call Trace:
[  340.134296][ T1863]  <TASK>
[ 340.134459][ T1863] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 340.134777][ T1863] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 340.135092][ T1863] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 340.135398][ T1863] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 340.135795][ T1863] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 340.136113][ T1863] netif_set_mtu (net/core/dev.c:9652) 
[ 340.136423][ T1863] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 340.136753][ T1863] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 340.137183][ T1863] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 340.137415][ T1863] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 340.137841][ T1863] br_add_if (net/bridge/br_if.c:697) bridge 
[ 340.138202][ T1863] do_set_master (net/core/rtnetlink.c:2948) 
[ 340.138516][ T1863] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 340.138848][ T1863] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 340.139253][ T1863] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 340.139559][ T1863] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 340.139875][ T1863] ? __kernel_text_address (kernel/extable.c:79) 
[ 340.140206][ T1863] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.140519][ T1863] ? __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) 
[ 340.140839][ T1863] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 340.141219][ T1863] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 340.141529][ T1863] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 340.141845][ T1863] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 340.142153][ T1863] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 340.142464][ T1863] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 340.142790][ T1863] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 340.143092][ T1863] ? __create_object (mm/kmemleak.c:771) 
[ 340.143400][ T1863] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 340.143716][ T1863] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 340.144026][ T1863] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 340.144418][ T1863] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 340.144762][ T1863] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 340.145098][ T1863] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 340.145403][ T1863] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.145726][ T1863] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 340.146035][ T1863] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 340.146340][ T1863] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 340.146663][ T1863] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 340.146974][ T1863] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 340.147283][ T1863] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 340.147612][ T1863] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.147925][ T1863] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 340.148234][ T1863] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 340.148549][ T1863] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 340.148890][ T1863] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 340.149203][ T1863] ? 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) 
[ 340.149510][ T1863] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 340.149837][ T1863] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 340.150142][ T1863] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.150455][ T1863] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 340.150774][ T1863] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 340.151083][ T1863] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 340.151396][ T1863] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 340.151726][ T1863] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 340.152035][ T1863] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 340.152429][ T1863] ___sys_sendmsg (net/socket.c:2670) 
[ 340.152762][ T1863] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 340.153070][ T1863] ? __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) 
[ 340.153461][ T1863] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 340.153783][ T1863] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 340.154100][ T1863] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.154428][ T1863] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 340.154754][ T1863] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 340.155069][ T1863] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 340.155384][ T1863] __sys_sendmsg (net/socket.c:2700) 
[ 340.155707][ T1863] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 340.156099][ T1863] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 340.156429][ T1863] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 340.156766][ T1863] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 340.157094][ T1863] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  340.157490][ T1863] RIP: 0033:0x7fc9aa7701e7
[ 340.157822][ T1863] 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)
[  340.158936][ T1863] RSP: 002b:00007ffee47bfbb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  340.159405][ T1863] RAX: ffffffffffffffda RBX: 00007ffee47c02e0 RCX: 00007fc9aa7701e7
[  340.159875][ T1863] RDX: 0000000000000000 RSI: 00007ffee47bfc20 RDI: 0000000000000005
[  340.160339][ T1863] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  340.160819][ T1863] R10: 000000000b7a7910 R11: 0000000000000246 R12: 0000000000000004
[  340.161288][ T1863] R13: 00000000686e0fce R14: 0000000000499600 R15: 0000000000000000
| [  340.572307][ T1866] ------------[ cut here ]------------
| [ 340.572847][ T1866] WARNING: CPU: 0 PID: 1866 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) 
| [  340.573478][ T1866] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [  340.574881][ T1866] Tainted: [W]=WARN
[  340.575139][ T1866] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 340.575523][ T1866] 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) 
[ 340.575865][ T1866] 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
[  340.577157][ T1866] RSP: 0018:ffffc90000567000 EFLAGS: 00010246
[  340.577553][ T1866] RAX: 0000000000000000 RBX: ffff8880078a9000 RCX: 0000000000000001
[  340.578038][ T1866] RDX: 0000000000000000 RSI: ffffffff94e9b941 RDI: ffffffff946555e0
[  340.578498][ T1866] RBP: ffffc900005670e8 R08: ffff8880078a9218 R09: 0000000000000000
[  340.579014][ T1866] R10: ffffc90000567118 R11: ffffffff95379160 R12: 1ffff920000ace04
[  340.579480][ T1866] R13: 00000000000005b6 R14: ffffc90000567118 R15: ffff8880078a9218
[  340.579956][ T1866] FS:  00007f9395a18800(0000) GS:ffff88809f2b7000(0000) knlGS:0000000000000000
[  340.580508][ T1866] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  340.580905][ T1866] CR2: 0000000000436890 CR3: 000000000532c004 CR4: 0000000000772ef0
[  340.581378][ T1866] PKRU: 55555554
[  340.581623][ T1866] Call Trace:
[  340.581858][ T1866]  <TASK>
[ 340.582030][ T1866] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 340.582418][ T1866] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 340.582740][ T1866] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 340.583069][ T1866] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 340.583377][ T1866] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 340.583709][ T1866] netif_set_mtu (net/core/dev.c:9652) 
[ 340.584031][ T1866] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 340.584362][ T1866] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 340.584681][ T1866] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 340.584913][ T1866] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 340.585234][ T1866] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 340.585547][ T1866] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 340.585880][ T1866] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 340.586279][ T1866] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 340.586613][ T1866] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 340.586928][ T1866] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 340.587261][ T1866] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 340.587566][ T1866] ? __dev_get_by_name (net/core/dev.c:865) 
[ 340.587887][ T1866] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 340.588218][ T1866] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 340.588533][ T1866] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 340.588848][ T1866] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 340.589177][ T1866] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 340.589501][ T1866] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 340.589826][ T1866] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 340.590154][ T1866] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 340.590460][ T1866] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 340.590794][ T1866] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 340.591122][ T1866] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 340.591434][ T1866] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 340.591755][ T1866] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.592079][ T1866] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 340.592392][ T1866] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 340.592707][ T1866] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 340.593046][ T1866] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 340.593354][ T1866] ? 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) 
[ 340.593674][ T1866] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 340.593992][ T1866] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 340.594307][ T1866] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 340.594631][ T1866] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 340.594947][ T1866] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 340.595280][ T1866] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 340.595617][ T1866] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 340.595931][ T1866] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 340.596259][ T1866] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 340.596664][ T1866] ___sys_sendmsg (net/socket.c:2670) 
[ 340.596986][ T1866] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 340.597295][ T1866] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 340.597628][ T1866] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 340.597936][ T1866] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 340.598263][ T1866] ? __handle_mm_fault (mm/memory.c:6212) 
[ 340.598585][ T1866] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 340.598895][ T1866] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 340.599240][ T1866] __sys_sendmsg (net/socket.c:2700) 
[ 340.599554][ T1866] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 340.599880][ T1866] ? 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) 
[ 340.600219][ T1866] ? 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) 
[ 340.600530][ T1866] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 340.600852][ T1866] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 340.601174][ T1866] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  340.601554][ T1866] RIP: 0033:0x7f9395be51e7
[ 340.601885][ T1866] 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)
[  340.603297][ T1866] RSP: 002b:00007ffddc514bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  340.603776][ T1866] RAX: ffffffffffffffda RBX: 00007ffddc515320 RCX: 00007f9395be51e7
[  340.604256][ T1866] RDX: 0000000000000000 RSI: 00007ffddc514c60 RDI: 0000000000000005
[  340.604754][ T1866] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[  340.605241][ T1866] R10: 00007f9395add6f8 R11: 0000000000000246 R12: 00007ffddc515340
[  340.605717][ T1866] R13: 00000000686e0fcf R14: 0000000000499600 R15: 00007ffddc514d48
| [  448.338303][ T2305] ------------[ cut here ]------------
| [ 448.338655][ T2305] WARNING: CPU: 0 PID: 2305 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) 
| [  448.339276][ T2305] Modules linked in: act_mirred cls_flower bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [  448.341433][ T2305] Tainted: [W]=WARN
[  448.341680][ T2305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 448.342068][ T2305] 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) 
[ 448.342395][ T2305] 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
[  448.343490][ T2305] RSP: 0018:ffffc90001327000 EFLAGS: 00010246
[  448.343894][ T2305] RAX: 0000000000000000 RBX: ffff88800a81c000 RCX: 0000000000000001
[  448.344352][ T2305] RDX: 0000000000000000 RSI: ffffffff94e9b941 RDI: ffffffff946555e0
[  448.344849][ T2305] RBP: ffffc900013270e8 R08: ffff88800a81c218 R09: 0000000000000000
[  448.345304][ T2305] R10: ffffc90001327118 R11: ffffffff91a910a8 R12: 1ffff92000264e04
[  448.345770][ T2305] R13: 00000000000005b6 R14: ffffc90001327118 R15: ffff88800a81c218
[  448.346229][ T2305] FS:  00007f9e86366800(0000) GS:ffff88809f2b7000(0000) knlGS:0000000000000000
[  448.346775][ T2305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  448.347167][ T2305] CR2: 0000000000436890 CR3: 000000000980b004 CR4: 0000000000772ef0
[  448.347661][ T2305] PKRU: 55555554
[  448.347890][ T2305] Call Trace:
[  448.348121][ T2305]  <TASK>
[ 448.348277][ T2305] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 448.348675][ T2305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 448.348992][ T2305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 448.349303][ T2305] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 448.349635][ T2305] netif_set_mtu (net/core/dev.c:9652) 
[ 448.349943][ T2305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 448.350259][ T2305] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 448.350569][ T2305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 448.350811][ T2305] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 448.351124][ T2305] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 448.351437][ T2305] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 448.351767][ T2305] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 448.352151][ T2305] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 448.352461][ T2305] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 448.352777][ T2305] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 448.353085][ T2305] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 448.353394][ T2305] ? __dev_get_by_name (net/core/dev.c:865) 
[ 448.353709][ T2305] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 448.354021][ T2305] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 448.354335][ T2305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 448.354656][ T2305] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 448.354967][ T2305] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 448.355285][ T2305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 448.355625][ T2305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 448.355945][ T2305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 448.356254][ T2305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 448.356565][ T2305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 448.356881][ T2305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 448.357190][ T2305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 448.357504][ T2305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 448.357822][ T2305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 448.358137][ T2305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 448.358444][ T2305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 448.358768][ T2305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 448.359075][ T2305] ? 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) 
[ 448.359383][ T2305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 448.359713][ T2305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 448.360027][ T2305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 448.360344][ T2305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 448.360661][ T2305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 448.360968][ T2305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 448.361283][ T2305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 448.361609][ T2305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 448.361913][ T2305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 448.362308][ T2305] ___sys_sendmsg (net/socket.c:2670) 
[ 448.362628][ T2305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 448.362932][ T2305] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 448.363240][ T2305] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 448.363545][ T2305] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 448.363875][ T2305] ? __handle_mm_fault (mm/memory.c:6212) 
[ 448.364180][ T2305] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 448.364501][ T2305] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 448.364835][ T2305] __sys_sendmsg (net/socket.c:2700) 
[ 448.365139][ T2305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 448.365445][ T2305] ? 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) 
[ 448.365766][ T2305] ? 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) 
[ 448.366074][ T2305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 448.366384][ T2305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 448.366697][ T2305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  448.367081][ T2305] RIP: 0033:0x7f9e865331e7
[ 448.367394][ T2305] 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)
[  448.368503][ T2305] RSP: 002b:00007ffe205960e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  448.368975][ T2305] RAX: ffffffffffffffda RBX: 00007ffe20596810 RCX: 00007f9e865331e7
[  448.369438][ T2305] RDX: 0000000000000000 RSI: 00007ffe20596150 RDI: 0000000000000005
[  448.369900][ T2305] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[  448.370355][ T2305] R10: 00007f9e8642b6f8 R11: 0000000000000246 R12: 00007ffe20596830


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