======================================
| [   20.386214][  T318] ip_gre: GRE over IPv4 tunneling driver
| [   20.454677][  T317] ------------[ cut here ]------------
| [ 20.455115][ T317] WARNING: CPU: 1 PID: 317 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) 
| [   20.456011][  T317] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.457018][  T317] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.457464][ T317] 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) 
[ 20.457793][ T317] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.458931][  T317] RSP: 0018:ffffc900005e7000 EFLAGS: 00010246
[   20.459335][  T317] RAX: 0000000000000000 RBX: ffff888013301000 RCX: 0000000000000001
[   20.459804][  T317] RDX: 0000000000000000 RSI: ffffffffa4a9b941 RDI: ffffffffa42555e0
[   20.460279][  T317] RBP: ffffc900005e70e8 R08: ffff888013301218 R09: 0000000000000000
[   20.460752][  T317] R10: ffffc900005e7118 R11: ffffffffa4f79160 R12: 1ffff920000bce04
[   20.461398][  T317] R13: 00000000000005b6 R14: ffffc900005e7118 R15: ffff888013301218
[   20.461862][  T317] FS:  00007fe298966800(0000) GS:ffff88808f737000(0000) knlGS:0000000000000000
[   20.462410][  T317] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.462801][  T317] CR2: 00007f96392ff6b0 CR3: 0000000009081006 CR4: 0000000000772ef0
[   20.463279][  T317] PKRU: 55555554
[   20.463516][  T317] Call Trace:
[   20.463753][  T317]  <TASK>
[ 20.463913][ T317] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.464316][ T317] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.464631][ T317] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.464937][ T317] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.465270][ T317] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.465599][ T317] netif_set_mtu (net/core/dev.c:9652) 
[ 20.465912][ T317] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.466234][ T317] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.466554][ T317] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.466785][ T317] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.467095][ T317] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.467417][ T317] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.467730][ T317] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.468110][ T317] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.468436][ T317] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.468746][ T317] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 20.469059][ T317] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.469374][ T317] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.469684][ T317] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.469990][ T317] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.470318][ T317] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.470622][ T317] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.471188][ T317] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.471511][ T317] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.471830][ T317] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.472147][ T317] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.472469][ T317] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.472780][ T317] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.473089][ T317] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.473404][ T317] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.473714][ T317] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.474022][ T317] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.474564][ T317] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.474872][ T317] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.475423][ T317] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.475739][ T317] ? 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) 
[ 20.476275][ T317] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.476591][ T317] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.476893][ T317] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.477201][ T317] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.477739][ T317] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.478048][ T317] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.478368][ T317] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.478684][ T317] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.479217][ T317] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.479614][ T317] ___sys_sendmsg (net/socket.c:2670) 
[ 20.479919][ T317] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.480221][ T317] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.480769][ T317] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.481069][ T317] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.481404][ T317] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.481710][ T317] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.482235][ T317] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.482565][ T317] __sys_sendmsg (net/socket.c:2700) 
[ 20.482874][ T317] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.483180][ T317] ? 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) 
[ 20.483498][ T317] ? 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) 
[ 20.483807][ T317] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.484117][ T317] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.484426][ T317] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.484803][  T317] RIP: 0033:0x7fe298b331e7
[ 20.485130][ T317] Code: Unable to access opcode bytes at 0x7fe298b331bd.

Code starting with the faulting instruction
===========================================
[   20.485648][  T317] RSP: 002b:00007fffa4b04838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.486367][  T317] RAX: ffffffffffffffda RBX: 00007fffa4b04f60 RCX: 00007fe298b331e7
[   20.486830][  T317] RDX: 0000000000000000 RSI: 00007fffa4b048a0 RDI: 0000000000000005
[   20.487299][  T317] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.487987][  T317] R10: 00007fe298a2b6f8 R11: 0000000000000246 R12: 00007fffa4b04f80
[   20.488593][  T317] R13: 00000000686e2161 R14: 0000000000499600 R15: 00007fffa4b0498c
| [   23.221936][  T344] ------------[ cut here ]------------
| [ 23.222266][ T344] WARNING: CPU: 3 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.222868][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.224318][  T344] Tainted: [W]=WARN
[   23.224556][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.224935][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.226250][ T344] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.227361][  T344] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   23.227748][  T344] RAX: 0000000000000000 RBX: ffff88800a5aa000 RCX: 0000000000000001
[   23.228208][  T344] RDX: 0000000000000000 RSI: ffffffffa4a9b941 RDI: ffffffffa42555e0
[   23.228690][  T344] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.229155][  T344] R10: ffffc900005c7010 R11: ffffffffa58a8918 R12: 1ffff920000b8de2
[   23.229619][  T344] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff88800a5aaf08
[   23.230080][  T344] FS:  00007fef15067800(0000) GS:ffff88808f837000(0000) knlGS:0000000000000000
[   23.230619][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.231202][  T344] CR2: 00000000004e5aa8 CR3: 0000000014968005 CR4: 0000000000772ef0
[   23.231671][  T344] PKRU: 55555554
[   23.231904][  T344] Call Trace:
[   23.232136][  T344]  <TASK>
[ 23.232315][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.232634][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.232948][ T344] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.233273][ T344] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.233659][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.233967][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.234300][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.234616][ T344] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.235046][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.235289][ T344] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.235733][ T344] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.236085][ T344] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.236419][ T344] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.236738][ T344] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.237125][ T344] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.237444][ T344] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.237751][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.238068][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.238388][ T344] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.238695][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.239073][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.239392][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.239696][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.239999][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.240327][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.240640][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.240945][ T344] ? __create_object (mm/kmemleak.c:771) 
[ 23.241269][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.241579][ T344] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.241892][ T344] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.242279][ T344] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.242593][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.242904][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.243208][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.243531][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.243838][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.244139][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.244469][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.244787][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.245098][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.245414][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.245738][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.246048][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.246365][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.246681][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.246984][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.247307][ T344] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.247620][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.247922][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.248262][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.248582][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.248887][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.249200][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.249520][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.249828][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.250219][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.250532][ T344] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.250846][ T344] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.251225][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.251540][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.251851][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.252164][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.252486][ T344] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.252794][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.253108][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.253426][ T344] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.253806][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.254124][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.254445][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.254753][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.255129][  T344] RIP: 0033:0x7fef152341e7
[ 23.255457][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.256578][  T344] RSP: 002b:00007ffca732f478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.257046][  T344] RAX: ffffffffffffffda RBX: 00007ffca732fba0 RCX: 00007fef152341e7
[   23.257512][  T344] RDX: 0000000000000000 RSI: 00007ffca732f4e0 RDI: 0000000000000005
[   23.257968][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.258441][  T344] R10: 0000000007b4b910 R11: 0000000000000246 R12: 0000000000000004
[   23.258897][  T344] R13: 00000000686e2164 R14: 0000000000499600 R15: 0000000000000000
| [   23.504508][  T347] ------------[ cut here ]------------
| [ 23.504876][ T347] WARNING: CPU: 0 PID: 347 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.505731][  T347] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.507581][  T347] Tainted: [W]=WARN
[   23.507847][  T347] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.508391][ T347] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.508756][ T347] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.509991][  T347] RSP: 0018:ffffc90000706ef0 EFLAGS: 00010246
[   23.510437][  T347] RAX: 0000000000000000 RBX: ffff88800a5aa000 RCX: 0000000000000001
[   23.510955][  T347] RDX: 0000000000000000 RSI: ffffffffa4a9b941 RDI: ffffffffa42555e0
[   23.511480][  T347] RBP: ffffc90000706fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.511996][  T347] R10: ffffc90000707010 R11: ffffffffa58a8918 R12: 1ffff920000e0de2
[   23.512539][  T347] R13: 00000000000005dc R14: ffffc90000707010 R15: ffff88800a5aaf08
[   23.513061][  T347] FS:  00007f852eb18800(0000) GS:ffff88808f6b7000(0000) knlGS:0000000000000000
[   23.513674][  T347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.514109][  T347] CR2: 00000000004e5ab0 CR3: 0000000016ee7003 CR4: 0000000000772ef0
[   23.514636][  T347] PKRU: 55555554
[   23.514899][  T347] Call Trace:
[   23.515159][  T347]  <TASK>
[ 23.515347][ T347] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.515716][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.516072][ T347] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.516432][ T347] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.516867][ T347] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.517216][ T347] netif_set_mtu (net/core/dev.c:9652) 
[ 23.517574][ T347] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.517934][ T347] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.518430][ T347] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.518696][ T347] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.519166][ T347] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.519569][ T347] do_set_master (net/core/rtnetlink.c:2948) 
[ 23.519923][ T347] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.520302][ T347] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.520747][ T347] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.521092][ T347] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.521451][ T347] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.521804][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.522161][ T347] ? __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) 
[ 23.522519][ T347] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.522948][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.523310][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.523654][ T347] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.523999][ T347] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.524357][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.524707][ T347] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.525048][ T347] ? __create_object (mm/kmemleak.c:771) 
[ 23.525407][ T347] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.525761][ T347] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.526110][ T347] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.526555][ T347] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.526908][ T347] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.527272][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.527622][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.527977][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.528337][ T347] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.528682][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.529034][ T347] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.529389][ T347] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.529736][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.530084][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.530444][ T347] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.530790][ T347] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.531137][ T347] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.531507][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.531853][ T347] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.532201][ T347] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.532571][ T347] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.532918][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.533280][ T347] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.533632][ T347] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.533981][ T347] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.534341][ T347] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.534694][ T347] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.535038][ T347] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.535496][ T347] ___sys_sendmsg (net/socket.c:2670) 
[ 23.535848][ T347] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.536193][ T347] ? __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) 
[ 23.536640][ T347] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.536990][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.537351][ T347] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.537704][ T347] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.538050][ T347] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.538406][ T347] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.538766][ T347] __sys_sendmsg (net/socket.c:2700) 
[ 23.539111][ T347] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.539567][ T347] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.539937][ T347] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.540300][ T347] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.540650][ T347] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.541076][  T347] RIP: 0033:0x7f852ece51e7
[ 23.541442][ T347] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.542684][  T347] RSP: 002b:00007ffd67be47f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.543208][  T347] RAX: ffffffffffffffda RBX: 00007ffd67be4f20 RCX: 00007f852ece51e7
[   23.543738][  T347] RDX: 0000000000000000 RSI: 00007ffd67be4860 RDI: 0000000000000005
[   23.544277][  T347] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.544794][  T347] R10: 000000002bcd7910 R11: 0000000000000246 R12: 0000000000000004
[   23.545323][  T347] R13: 00000000686e2165 R14: 0000000000499600 R15: 0000000000000000
| [   23.946926][  T350] ------------[ cut here ]------------
| [ 23.947832][ T350] WARNING: CPU: 3 PID: 350 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) 
| [   23.948489][  T350] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.949896][  T350] Tainted: [W]=WARN
[   23.950143][  T350] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.950566][ T350] 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) 
[ 23.950902][ T350] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.952082][  T350] RSP: 0018:ffffc90000507000 EFLAGS: 00010246
[   23.952495][  T350] RAX: 0000000000000000 RBX: ffff888008af9000 RCX: 0000000000000001
[   23.952977][  T350] RDX: 0000000000000000 RSI: ffffffffa4a9b941 RDI: ffffffffa42555e0
[   23.953464][  T350] RBP: ffffc900005070e8 R08: ffff888008af9218 R09: 0000000000000000
[   23.953935][  T350] R10: ffffc90000507118 R11: ffffffffa4f79160 R12: 1ffff920000a0e04
[   23.954424][  T350] R13: 00000000000005b6 R14: ffffc90000507118 R15: ffff888008af9218
[   23.954906][  T350] FS:  00007f072fa4b800(0000) GS:ffff88808f837000(0000) knlGS:0000000000000000
[   23.955484][  T350] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.955903][  T350] CR2: 0000000000436890 CR3: 00000000051cb001 CR4: 0000000000772ef0
[   23.956398][  T350] PKRU: 55555554
[   23.956640][  T350] Call Trace:
[   23.956882][  T350]  <TASK>
[ 23.957046][ T350] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.957460][ T350] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.957785][ T350] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.958117][ T350] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.958448][ T350] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.958774][ T350] netif_set_mtu (net/core/dev.c:9652) 
[ 23.959097][ T350] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.959435][ T350] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.959760][ T350] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.960003][ T350] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.960335][ T350] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.960670][ T350] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.960999][ T350] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.961411][ T350] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.961743][ T350] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.962068][ T350] rtnl_newlink_create (net/core/rtnetlink.c:3825) 
[ 23.962399][ T350] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.962723][ T350] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.963044][ T350] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.963377][ T350] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.963713][ T350] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.964032][ T350] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.964362][ T350] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.964692][ T350] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.965019][ T350] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.965364][ T350] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.965696][ T350] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.966019][ T350] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.966362][ T350] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.966683][ T350] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.967006][ T350] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.967361][ T350] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.967682][ T350] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.968006][ T350] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.968343][ T350] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.968660][ T350] ? 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) 
[ 23.968982][ T350] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 23.969317][ T350] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.969643][ T350] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.969982][ T350] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.970319][ T350] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.970637][ T350] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.970980][ T350] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.971313][ T350] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.971643][ T350] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.972053][ T350] ___sys_sendmsg (net/socket.c:2670) 
[ 23.972382][ T350] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.972699][ T350] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.973023][ T350] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.973347][ T350] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.973667][ T350] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.973982][ T350] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.974305][ T350] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.974645][ T350] __sys_sendmsg (net/socket.c:2700) 
[ 23.974962][ T350] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.975286][ T350] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.975627][ T350] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.975948][ T350] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.976275][ T350] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.976593][ T350] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.976994][  T350] RIP: 0033:0x7f072fc181e7
[ 23.977333][ T350] 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)
[   23.978469][  T350] RSP: 002b:00007ffe7914f418 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.978955][  T350] RAX: ffffffffffffffda RBX: 00007ffe7914fb40 RCX: 00007f072fc181e7
[   23.979449][  T350] RDX: 0000000000000000 RSI: 00007ffe7914f480 RDI: 0000000000000005
[   23.979931][  T350] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.980419][  T350] R10: 00007f072fb106f8 R11: 0000000000000246 R12: 00007ffe7914fb60


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