======================================
| [   15.313910][  T269] ip_gre: GRE over IPv4 tunneling driver
| [   15.402303][  T268] ------------[ cut here ]------------
| [ 15.402772][ T268] WARNING: CPU: 1 PID: 268 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) 
| [   15.403411][  T268] Modules linked in: ip_gre gre
[   15.404345][  T268] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.404743][ T268] 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) 
[ 15.405078][ T268] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   15.406207][  T268] RSP: 0018:ffffc90000c47000 EFLAGS: 00010246
[   15.406599][  T268] RAX: 0000000000000000 RBX: ffff88800ecb4000 RCX: 0000000000000001
[   15.407189][  T268] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   15.407666][  T268] RBP: ffffc90000c470e8 R08: ffff88800ecb4218 R09: 0000000000000000
[   15.408141][  T268] R10: ffffc90000c47118 R11: ffff8880076415f0 R12: 1ffff92000188e04
[   15.408605][  T268] R13: 000000000000ffe7 R14: ffffc90000c47118 R15: ffff88800ecb4218
[   15.409088][  T268] FS:  00007ffacc4c1800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   15.409801][  T268] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.410212][  T268] CR2: 00007ffcafe408b8 CR3: 000000000b205003 CR4: 0000000000772ef0
[   15.410687][  T268] PKRU: 55555554
[   15.410933][  T268] Call Trace:
[   15.411170][  T268]  <TASK>
[ 15.411334][ T268] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 15.411721][ T268] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 15.412044][ T268] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 15.412351][ T268] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 15.412694][ T268] netif_set_mtu (net/core/dev.c:9652) 
[ 15.413018][ T268] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 15.413342][ T268] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 15.413580][ T268] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 15.413898][ T268] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 15.414214][ T268] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 15.414525][ T268] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 15.414919][ T268] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 15.415240][ T268] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 15.415552][ T268] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 15.415878][ T268] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 15.416181][ T268] ? __dev_get_by_name (net/core/dev.c:865) 
[ 15.416494][ T268] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 15.416815][ T268] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 15.417125][ T268] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 15.417429][ T268] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 15.417748][ T268] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 15.418086][ T268] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 15.418404][ T268] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.418724][ T268] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 15.419040][ T268] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.419357][ T268] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.419666][ T268] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 15.419986][ T268] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.420302][ T268] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.420614][ T268] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 15.420928][ T268] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.421234][ T268] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 15.421550][ T268] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 15.421873][ T268] ? 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) 
[ 15.422180][ T268] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 15.422487][ T268] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 15.422810][ T268] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.423120][ T268] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 15.423428][ T268] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 15.423736][ T268] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 15.424059][ T268] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 15.424366][ T268] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 15.424669][ T268] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 15.425076][ T268] ___sys_sendmsg (net/socket.c:2670) 
[ 15.425382][ T268] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 15.425690][ T268] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 15.426010][ T268] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 15.426313][ T268] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 15.426620][ T268] ? __handle_mm_fault (mm/memory.c:6212) 
[ 15.426936][ T268] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 15.427238][ T268] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 15.427562][ T268] __sys_sendmsg (net/socket.c:2700) 
[ 15.427883][ T268] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 15.428186][ T268] ? 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) 
[ 15.428498][ T268] ? 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) 
[ 15.428815][ T268] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.429128][ T268] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.429436][ T268] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.429824][  T268] RIP: 0033:0x7ffacc68e1e7
[ 15.430145][ T268] Code: Unable to access opcode bytes at 0x7ffacc68e1bd.

Code starting with the faulting instruction
===========================================
[   15.430540][  T268] RSP: 002b:00007fff48c69da8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   15.431011][  T268] RAX: ffffffffffffffda RBX: 00007fff48c6a4d0 RCX: 00007ffacc68e1e7
[   15.431473][  T268] RDX: 0000000000000000 RSI: 00007fff48c69e10 RDI: 0000000000000005
[   15.431945][  T268] RBP: 0000000000000004 R08: 00000000000000b4 R09: 0000000000000000
[   15.432404][  T268] R10: 00007ffacc5866f8 R11: 0000000000000246 R12: 00007fff48c6a500
[   15.432877][  T268] R13: 00000000686e5659 R14: 0000000000499600 R15: 00007fff48c69f00
| [   16.930635][  T292] ------------[ cut here ]------------
| [ 16.932509][ T292] WARNING: CPU: 0 PID: 292 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) 
| [   16.933191][  T292] Modules linked in: ip_gre gre
| [   16.934152][  T292] Tainted: [W]=WARN
[   16.934391][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.934796][ T292] 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) 
[ 16.935115][ T292] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   16.936221][  T292] RSP: 0018:ffffc900005c7000 EFLAGS: 00010246
[   16.936611][  T292] RAX: 0000000000000000 RBX: ffff888007a69000 RCX: 0000000000000001
[   16.937084][  T292] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   16.937543][  T292] RBP: ffffc900005c70e8 R08: ffff888007a69218 R09: 0000000000000000
[   16.938022][  T292] R10: ffffc900005c7118 R11: ffff8880076415f0 R12: 1ffff920000b8e04
[   16.938490][  T292] R13: 000000000000ffe7 R14: ffffc900005c7118 R15: ffff888007a69218
[   16.938961][  T292] FS:  00007f405cdf5800(0000) GS:ffff8880b4f99000(0000) knlGS:0000000000000000
[   16.939495][  T292] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.939890][  T292] CR2: 0000000000436890 CR3: 000000000f796004 CR4: 0000000000772ef0
[   16.940349][  T292] PKRU: 55555554
[   16.940580][  T292] Call Trace:
[   16.940818][  T292]  <TASK>
[ 16.940975][ T292] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 16.941356][ T292] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 16.941669][ T292] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 16.941993][ T292] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 16.942309][ T292] netif_set_mtu (net/core/dev.c:9652) 
[ 16.942622][ T292] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 16.942953][ T292] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 16.943186][ T292] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 16.943499][ T292] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 16.943823][ T292] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 16.944134][ T292] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 16.944512][ T292] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 16.944832][ T292] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 16.945142][ T292] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 16.945449][ T292] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 16.945754][ T292] ? __dev_get_by_name (net/core/dev.c:865) 
[ 16.946079][ T292] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 16.946390][ T292] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 16.946699][ T292] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 16.947019][ T292] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 16.947334][ T292] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 16.947651][ T292] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 16.947970][ T292] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.948292][ T292] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 16.948595][ T292] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.948910][ T292] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.949214][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 16.949522][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.949846][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.950170][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 16.950477][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.950817][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 16.951137][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 16.951442][ T292] ? 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) 
[ 16.951749][ T292] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 16.952063][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 16.952369][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.952690][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 16.953013][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 16.953321][ T292] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 16.953637][ T292] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 16.953963][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 16.954272][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 16.954668][ T292] ___sys_sendmsg (net/socket.c:2670) 
[ 16.954985][ T292] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 16.955295][ T292] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 16.955606][ T292] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 16.955921][ T292] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 16.956233][ T292] ? __handle_mm_fault (mm/memory.c:6212) 
[ 16.956541][ T292] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 16.956859][ T292] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 16.957193][ T292] __sys_sendmsg (net/socket.c:2700) 
[ 16.957498][ T292] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 16.957822][ T292] ? 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) 
[ 16.958139][ T292] ? 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) 
[ 16.958446][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.958757][ T292] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.959076][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.959462][  T292] RIP: 0033:0x7f405cfc21e7
[ 16.959791][ T292] 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)
[   16.960900][  T292] RSP: 002b:00007ffd0a33c938 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   16.961362][  T292] RAX: ffffffffffffffda RBX: 00007ffd0a33d060 RCX: 00007f405cfc21e7
[   16.961837][  T292] RDX: 0000000000000000 RSI: 00007ffd0a33c9a0 RDI: 0000000000000005
[   16.962301][  T292] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   16.962764][  T292] R10: 00007f405ceba6f8 R11: 0000000000000246 R12: 00007ffd0a33d090
[   16.963234][  T292] R13: 00000000686e565b R14: 0000000000499600 R15: 00007ffd0a33ca90
| [   18.384443][  T308] ------------[ cut here ]------------
| [ 18.384917][ T308] WARNING: CPU: 2 PID: 308 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) 
| [   18.385555][  T308] Modules linked in: ip_gre gre
| [   18.386551][  T308] Tainted: [W]=WARN
[   18.386814][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.387216][ T308] 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) 
[ 18.387549][ T308] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   18.388686][  T308] RSP: 0018:ffffc90000657000 EFLAGS: 00010246
[   18.389101][  T308] RAX: 0000000000000000 RBX: ffff88800b311000 RCX: 0000000000000001
[   18.389580][  T308] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   18.390066][  T308] RBP: ffffc900006570e8 R08: ffff88800b311218 R09: 0000000000000000
[   18.390543][  T308] R10: ffffc90000657118 R11: ffff88800b311000 R12: 1ffff920000cae04
[   18.391027][  T308] R13: 00000000000005c4 R14: ffffc90000657118 R15: ffff88800b311218
[   18.391503][  T308] FS:  00007fefdc62e800(0000) GS:ffff8880b5099000(0000) knlGS:0000000000000000
[   18.392075][  T308] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.392488][  T308] CR2: 0000000000436890 CR3: 000000000e3bb003 CR4: 0000000000772ef0
[   18.393016][  T308] PKRU: 55555554
[   18.393268][  T308] Call Trace:
[   18.393517][  T308]  <TASK>
[ 18.393695][ T308] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 18.394045][ T308] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.394368][ T308] ? packet_notifier (net/packet/af_packet.c:4286) 
[ 18.394691][ T308] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 18.395034][ T308] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 18.395384][ T308] netif_set_mtu (net/core/dev.c:9652) 
[ 18.395714][ T308] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.396064][ T308] ? __pfx_register_netdevice (net/core/dev.c:11036) 
[ 18.396410][ T308] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.396670][ T308] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 18.397005][ T308] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 18.397333][ T308] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 18.397660][ T308] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 18.398067][ T308] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 18.398398][ T308] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 18.398726][ T308] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 18.399061][ T308] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 18.399380][ T308] ? __dev_get_by_name (net/core/dev.c:865) 
[ 18.399700][ T308] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 18.400031][ T308] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 18.400354][ T308] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.400676][ T308] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 18.401019][ T308] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 18.401353][ T308] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.401681][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.402027][ T308] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.402346][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.402696][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.403044][ T308] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.403379][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.403717][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.404070][ T308] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.404392][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.404715][ T308] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.405056][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.405379][ T308] ? 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) 
[ 18.405701][ T308] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 18.406040][ T308] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.406361][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.406687][ T308] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.407036][ T308] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.407361][ T308] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.407690][ T308] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.408029][ T308] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.408355][ T308] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.408763][ T308] ___sys_sendmsg (net/socket.c:2670) 
[ 18.409097][ T308] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.409417][ T308] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 18.409742][ T308] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 18.410072][ T308] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 18.410398][ T308] ? __handle_mm_fault (mm/memory.c:6212) 
[ 18.410723][ T308] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 18.411069][ T308] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 18.411419][ T308] __sys_sendmsg (net/socket.c:2700) 
[ 18.411756][ T308] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.412085][ T308] ? 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) 
[ 18.412415][ T308] ? 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) 
[ 18.412771][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.413116][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.413446][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.413869][  T308] RIP: 0033:0x7fefdc7fb1e7
[ 18.414201][ T308] 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)
[   18.415329][  T308] RSP: 002b:00007ffcb7138ca8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.415818][  T308] RAX: ffffffffffffffda RBX: 00007ffcb71393d0 RCX: 00007fefdc7fb1e7
[   18.416295][  T308] RDX: 0000000000000000 RSI: 00007ffcb7138d10 RDI: 0000000000000005
[   18.416769][  T308] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   18.417259][  T308] R10: 00007fefdc6f36f8 R11: 0000000000000246 R12: 00007ffcb7139400
[   18.417734][  T308] R13: 00000000686e565d R14: 0000000000499600 R15: 00007ffcb7138e00
| [   19.864467][  T324] ------------[ cut here ]------------
| [ 19.864894][ T324] WARNING: CPU: 1 PID: 324 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) 
| [   19.865504][  T324] Modules linked in: ip_gre gre
| [   19.866463][  T324] Tainted: [W]=WARN
[   19.866696][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.867090][ T324] 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) 
[ 19.867407][ T324] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   19.868507][  T324] RSP: 0018:ffffc90000747000 EFLAGS: 00010246
[   19.868905][  T324] RAX: 0000000000000000 RBX: ffff888009889000 RCX: 0000000000000001
[   19.869360][  T324] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   19.869829][  T324] RBP: ffffc900007470e8 R08: ffff888009889218 R09: 0000000000000000
[   19.870287][  T324] R10: ffffc90000747118 R11: ffffffffb229be78 R12: 1ffff920000e8e04
[   19.870745][  T324] R13: 000000000000ffe7 R14: ffffc90000747118 R15: ffff888009889218
[   19.871214][  T324] FS:  00007f7060dec800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   19.871748][  T324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.872143][  T324] CR2: 0000000000436890 CR3: 0000000010cf8004 CR4: 0000000000772ef0
[   19.872628][  T324] PKRU: 55555554
[   19.872871][  T324] Call Trace:
[   19.873101][  T324]  <TASK>
[ 19.873259][ T324] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 19.873641][ T324] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 19.873962][ T324] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.874271][ T324] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 19.874588][ T324] netif_set_mtu (net/core/dev.c:9652) 
[ 19.874903][ T324] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.875227][ T324] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.875460][ T324] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 19.875767][ T324] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 19.876094][ T324] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 19.876408][ T324] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 19.876798][ T324] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.877122][ T324] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 19.877433][ T324] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 19.877743][ T324] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 19.878054][ T324] ? __dev_get_by_name (net/core/dev.c:865) 
[ 19.878364][ T324] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.878667][ T324] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 19.878986][ T324] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.879298][ T324] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.879609][ T324] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 19.879934][ T324] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.880244][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.880561][ T324] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.880871][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.881177][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.881482][ T324] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.881810][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.882121][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.882431][ T324] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.882751][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.883066][ T324] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.883381][ T324] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.883686][ T324] ? 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) 
[ 19.884008][ T324] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.884317][ T324] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.884622][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.884946][ T324] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.885256][ T324] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.885560][ T324] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.885882][ T324] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.886194][ T324] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.886497][ T324] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.886902][ T324] ___sys_sendmsg (net/socket.c:2670) 
[ 19.887209][ T324] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.887512][ T324] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 19.887830][ T324] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 19.888132][ T324] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 19.888445][ T324] ? __handle_mm_fault (mm/memory.c:6212) 
[ 19.888747][ T324] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 19.889059][ T324] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 19.889382][ T324] __sys_sendmsg (net/socket.c:2700) 
[ 19.889685][ T324] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.889999][ T324] ? 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) 
[ 19.890311][ T324] ? 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) 
[ 19.890618][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.890937][ T324] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.891245][ T324] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.891619][  T324] RIP: 0033:0x7f7060fb91e7
[ 19.891941][ T324] 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)
[   19.893047][  T324] RSP: 002b:00007ffd73270248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.893508][  T324] RAX: ffffffffffffffda RBX: 00007ffd73270970 RCX: 00007f7060fb91e7
[   19.893973][  T324] RDX: 0000000000000000 RSI: 00007ffd732702b0 RDI: 0000000000000005
[   19.894434][  T324] RBP: 0000000000000004 R08: 00000000000000b4 R09: 0000000000000000
[   19.894903][  T324] R10: 00007f7060eb16f8 R11: 0000000000000246 R12: 00007ffd732709a0
[   19.895361][  T324] R13: 00000000686e565e R14: 0000000000499600 R15: 00007ffd732703a0
| [   21.244138][  T340] ------------[ cut here ]------------
| [ 21.244596][ T340] WARNING: CPU: 2 PID: 340 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   21.245253][  T340] Modules linked in: ip_gre gre
| [   21.246241][  T340] Tainted: [W]=WARN
[   21.246492][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.246907][ T340] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 21.247262][ T340] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   21.248429][  T340] RSP: 0018:ffffc90000817000 EFLAGS: 00010246
[   21.248869][  T340] RAX: 0000000000000000 RBX: ffff888009a2c000 RCX: 0000000000000001
[   21.249356][  T340] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   21.249865][  T340] RBP: ffffc900008170e8 R08: ffff888009a2c218 R09: 0000000000000000
[   21.250338][  T340] R10: ffffc90000817118 R11: ffff8880076415f0 R12: 1ffff92000102e04
[   21.250826][  T340] R13: 000000000000ffe7 R14: ffffc90000817118 R15: ffff888009a2c218
[   21.251302][  T340] FS:  00007f809157a800(0000) GS:ffff8880b5099000(0000) knlGS:0000000000000000
[   21.251871][  T340] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.252274][  T340] CR2: 0000000000436890 CR3: 000000000a1f6003 CR4: 0000000000772ef0
[   21.252777][  T340] PKRU: 55555554
[   21.253040][  T340] Call Trace:
[   21.253290][  T340]  <TASK>
[ 21.253467][ T340] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 21.253894][ T340] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 21.254229][ T340] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.254551][ T340] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 21.254896][ T340] netif_set_mtu (net/core/dev.c:9652) 
[ 21.255244][ T340] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.255589][ T340] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.255851][ T340] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 21.256196][ T340] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 21.256527][ T340] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 21.256865][ T340] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 21.257264][ T340] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 21.257595][ T340] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 21.257928][ T340] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 21.258253][ T340] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 21.258571][ T340] ? __dev_get_by_name (net/core/dev.c:865) 
[ 21.258910][ T340] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 21.259231][ T340] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 21.259560][ T340] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.259890][ T340] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 21.260220][ T340] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 21.260551][ T340] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.260885][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.261221][ T340] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.261543][ T340] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.261879][ T340] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.262200][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.262529][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.262896][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.263232][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.263559][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.263934][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.264268][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.264590][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 21.264923][ T340] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 21.265251][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.265572][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.265914][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.266242][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.266566][ T340] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.266909][ T340] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.267257][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.267584][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.268014][ T340] ___sys_sendmsg (net/socket.c:2670) 
[ 21.268348][ T340] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.268683][ T340] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 21.269022][ T340] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 21.269345][ T340] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 21.269671][ T340] ? __handle_mm_fault (mm/memory.c:6212) 
[ 21.270002][ T340] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 21.270323][ T340] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 21.270666][ T340] __sys_sendmsg (net/socket.c:2700) 
[ 21.271004][ T340] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.271323][ T340] ? 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) 
[ 21.271654][ T340] ? 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) 
[ 21.271983][ T340] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.272311][ T340] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.272660][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.273075][  T340] RIP: 0033:0x7f80917471e7
[ 21.273422][ T340] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   21.274571][  T340] RSP: 002b:00007fff3cb56218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.275070][  T340] RAX: ffffffffffffffda RBX: 00007fff3cb56940 RCX: 00007f80917471e7
[   21.275563][  T340] RDX: 0000000000000000 RSI: 00007fff3cb56280 RDI: 0000000000000005
[   21.276059][  T340] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   21.276545][  T340] R10: 00007f809163f6f8 R11: 0000000000000246 R12: 00007fff3cb56970
[   21.277041][  T340] R13: 00000000686e565f R14: 0000000000499600 R15: 00007fff3cb56370
| [   22.669738][  T356] ------------[ cut here ]------------
| [ 22.670161][ T356] WARNING: CPU: 1 PID: 356 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.670801][  T356] Modules linked in: ip_gre gre
| [   22.671983][  T356] Tainted: [W]=WARN
[   22.672218][  T356] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.672612][ T356] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.672944][ T356] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.674055][  T356] RSP: 0018:ffffc90000bf7000 EFLAGS: 00010246
[   22.674452][  T356] RAX: 0000000000000000 RBX: ffff88800b311000 RCX: 0000000000000001
[   22.674932][  T356] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   22.675412][  T356] RBP: ffffc90000bf70e8 R08: ffff88800b311218 R09: 0000000000000000
[   22.675879][  T356] R10: ffffc90000bf7118 R11: ffff88800b311000 R12: 1ffff9200017ee04
[   22.676338][  T356] R13: 00000000000005c4 R14: ffffc90000bf7118 R15: ffff88800b311218
[   22.676808][  T356] FS:  00007fa7d65a2800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   22.677350][  T356] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.677735][  T356] CR2: 0000000000436890 CR3: 0000000010c56005 CR4: 0000000000772ef0
[   22.678206][  T356] PKRU: 55555554
[   22.678437][  T356] Call Trace:
[   22.678665][  T356]  <TASK>
[ 22.678838][ T356] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 22.679159][ T356] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.679467][ T356] ? packet_notifier (net/packet/af_packet.c:4286) 
[ 22.679772][ T356] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 22.680090][ T356] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 22.680402][ T356] netif_set_mtu (net/core/dev.c:9652) 
[ 22.680707][ T356] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.681028][ T356] ? __pfx_register_netdevice (net/core/dev.c:11036) 
[ 22.681339][ T356] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.681575][ T356] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 22.681889][ T356] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 22.682202][ T356] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 22.682513][ T356] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 22.682920][ T356] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 22.683238][ T356] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 22.683549][ T356] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 22.683870][ T356] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 22.684176][ T356] ? __dev_get_by_name (net/core/dev.c:865) 
[ 22.684491][ T356] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 22.684806][ T356] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 22.685117][ T356] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.685419][ T356] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 22.685733][ T356] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 22.686061][ T356] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.686376][ T356] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.686694][ T356] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.687012][ T356] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.687318][ T356] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.687622][ T356] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.687942][ T356] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.688250][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.688565][ T356] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.688879][ T356] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.689186][ T356] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.689501][ T356] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.689813][ T356] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 22.690123][ T356] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.690430][ T356] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.690740][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.691069][ T356] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.691385][ T356] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.691689][ T356] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.692009][ T356] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.692320][ T356] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.692631][ T356] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.693035][ T356] ___sys_sendmsg (net/socket.c:2670) 
[ 22.693342][ T356] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.693648][ T356] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 22.693964][ T356] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 22.694267][ T356] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 22.694577][ T356] ? __handle_mm_fault (mm/memory.c:6212) 
[ 22.694900][ T356] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 22.695211][ T356] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 22.695537][ T356] __sys_sendmsg (net/socket.c:2700) 
[ 22.695850][ T356] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.696156][ T356] ? 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) 
[ 22.696470][ T356] ? 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) 
[ 22.696776][ T356] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.697101][ T356] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.697408][ T356] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.697813][  T356] RIP: 0033:0x7fa7d676f1e7
[ 22.698129][ T356] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   22.699234][  T356] RSP: 002b:00007ffd81e59db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.699705][  T356] RAX: ffffffffffffffda RBX: 00007ffd81e5a4e0 RCX: 00007fa7d676f1e7
[   22.700168][  T356] RDX: 0000000000000000 RSI: 00007ffd81e59e20 RDI: 0000000000000005
[   22.700626][  T356] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   22.701090][  T356] R10: 00007fa7d66676f8 R11: 0000000000000246 R12: 00007ffd81e5a510
[   22.701551][  T356] R13: 00000000686e5661 R14: 0000000000499600 R15: 00007ffd81e59f10
| [   24.066278][  T372] ------------[ cut here ]------------
| [ 24.066691][ T372] WARNING: CPU: 3 PID: 372 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   24.067309][  T372] Modules linked in: ip_gre gre
| [   24.068272][  T372] Tainted: [W]=WARN
[   24.068509][  T372] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.068906][ T372] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 24.069225][ T372] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   24.070332][  T372] RSP: 0018:ffffc900009a7000 EFLAGS: 00010246
[   24.070720][  T372] RAX: 0000000000000000 RBX: ffff888004dcc000 RCX: 0000000000000001
[   24.071192][  T372] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   24.071655][  T372] RBP: ffffc900009a70e8 R08: ffff888004dcc218 R09: 0000000000000000
[   24.072125][  T372] R10: ffffc900009a7118 R11: ffff8880076415f0 R12: 1ffff92000134e04
[   24.072590][  T372] R13: 000000000000ffe7 R14: ffffc900009a7118 R15: ffff888004dcc218
[   24.073061][  T372] FS:  00007fea7db98800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   24.073598][  T372] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.074139][  T372] CR2: 0000000000436890 CR3: 000000000b661003 CR4: 0000000000772ef0
[   24.074601][  T372] PKRU: 55555554
[   24.074856][  T372] Call Trace:
[   24.075090][  T372]  <TASK>
[ 24.075248][ T372] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 24.075628][ T372] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 24.075952][ T372] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.076261][ T372] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 24.076578][ T372] netif_set_mtu (net/core/dev.c:9652) 
[ 24.076903][ T372] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.077226][ T372] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.077458][ T372] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 24.077765][ T372] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 24.078094][ T372] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 24.078408][ T372] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 24.078806][ T372] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 24.079126][ T372] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 24.079437][ T372] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 24.079745][ T372] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 24.080052][ T372] ? __dev_get_by_name (net/core/dev.c:865) 
[ 24.080360][ T372] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.080665][ T372] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 24.080992][ T372] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.081302][ T372] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.081614][ T372] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 24.081938][ T372] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.082250][ T372] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.082577][ T372] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.082889][ T372] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.083197][ T372] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.083505][ T372] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.083822][ T372] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.084135][ T372] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.084446][ T372] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.084749][ T372] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.085090][ T372] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.085416][ T372] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.085723][ T372] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 24.086040][ T372] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.086351][ T372] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.086655][ T372] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.086975][ T372] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.087292][ T372] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.087597][ T372] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.087918][ T372] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.088230][ T372] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.088535][ T372] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.088942][ T372] ___sys_sendmsg (net/socket.c:2670) 
[ 24.089252][ T372] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.089558][ T372] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 24.089874][ T372] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 24.090182][ T372] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 24.090493][ T372] ? __handle_mm_fault (mm/memory.c:6212) 
[ 24.090814][ T372] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 24.091118][ T372] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 24.091444][ T372] __sys_sendmsg (net/socket.c:2700) 
[ 24.091752][ T372] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.092064][ T372] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 24.092383][ T372] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 24.092703][ T372] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.093029][ T372] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.093339][ T372] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.093722][  T372] RIP: 0033:0x7fea7dd651e7
[ 24.094045][ T372] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   24.095148][  T372] RSP: 002b:00007ffdc9b2a0f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.095618][  T372] RAX: ffffffffffffffda RBX: 00007ffdc9b2a820 RCX: 00007fea7dd651e7
[   24.096083][  T372] RDX: 0000000000000000 RSI: 00007ffdc9b2a160 RDI: 0000000000000005
[   24.096543][  T372] RBP: 0000000000000004 R08: 00000000000000b4 R09: 0000000000000000
[   24.097016][  T372] R10: 00007fea7dc5d6f8 R11: 0000000000000246 R12: 00007ffdc9b2a850
[   24.097479][  T372] R13: 00000000686e5662 R14: 0000000000499600 R15: 00007ffdc9b2a250
| [   25.633493][  T389] ------------[ cut here ]------------
| [ 25.633854][ T389] WARNING: CPU: 3 PID: 389 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) 
| [   25.634474][  T389] Modules linked in: ip_gre gre
| [   25.635435][  T389] Tainted: [W]=WARN
[   25.635667][  T389] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.636059][ T389] 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) 
[ 25.636374][ T389] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   25.637477][  T389] RSP: 0018:ffffc90000b17000 EFLAGS: 00010246
[   25.637874][  T389] RAX: 0000000000000000 RBX: ffff88800cae1000 RCX: 0000000000000001
[   25.638336][  T389] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   25.638813][  T389] RBP: ffffc90000b170e8 R08: ffff88800cae1218 R09: 0000000000000000
[   25.639282][  T389] R10: ffffc90000b17118 R11: ffffffffb638d1e0 R12: 1ffff92000162e04
[   25.639744][  T389] R13: 000000000000ffe7 R14: ffffc90000b17118 R15: ffff88800cae1218
[   25.640387][  T389] FS:  00007f651b4ff800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   25.641049][  T389] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.641439][  T389] CR2: 0000000000436890 CR3: 0000000009504002 CR4: 0000000000772ef0
[   25.641912][  T389] PKRU: 55555554
[   25.642145][  T389] Call Trace:
[   25.642373][  T389]  <TASK>
[ 25.642530][ T389] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 25.642933][ T389] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 25.643248][ T389] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.643556][ T389] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 25.643890][ T389] netif_set_mtu (net/core/dev.c:9652) 
[ 25.644201][ T389] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.644525][ T389] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.644761][ T389] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 25.645081][ T389] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 25.645404][ T389] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 25.645716][ T389] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 25.646106][ T389] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 25.646427][ T389] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 25.646737][ T389] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 25.647053][ T389] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 25.647355][ T389] ? __dev_get_by_name (net/core/dev.c:865) 
[ 25.647665][ T389] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.647985][ T389] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.648302][ T389] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.648605][ T389] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.648926][ T389] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 25.649243][ T389] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.649554][ T389] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.649882][ T389] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.650194][ T389] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.650503][ T389] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.650819][ T389] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.651131][ T389] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.651440][ T389] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.651749][ T389] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.652071][ T389] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.652383][ T389] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.652710][ T389] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.653023][ T389] ? 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) 
[ 25.653329][ T389] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.653637][ T389] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.653967][ T389] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.654278][ T389] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.654590][ T389] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.654904][ T389] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.655217][ T389] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.655524][ T389] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.655842][ T389] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.656242][ T389] ___sys_sendmsg (net/socket.c:2670) 
[ 25.656547][ T389] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.656865][ T389] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 25.657174][ T389] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.657476][ T389] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 25.657798][ T389] ? __handle_mm_fault (mm/memory.c:6212) 
[ 25.658108][ T389] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 25.658410][ T389] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 25.658738][ T389] __sys_sendmsg (net/socket.c:2700) 
[ 25.659053][ T389] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.659357][ T389] ? 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) 
[ 25.659670][ T389] ? 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) 
[ 25.659992][ T389] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.660311][ T389] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.660621][ T389] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.661008][  T389] RIP: 0033:0x7f651b6cc1e7
[ 25.661336][ T389] 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)
[   25.662438][  T389] RSP: 002b:00007ffca56125f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.662923][  T389] RAX: ffffffffffffffda RBX: 00007ffca5612d20 RCX: 00007f651b6cc1e7
[   25.663389][  T389] RDX: 0000000000000000 RSI: 00007ffca5612660 RDI: 0000000000000005
[   25.663865][  T389] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   25.664332][  T389] R10: 00007f651b5c46f8 R11: 0000000000000246 R12: 00007ffca5612d50
[   25.664802][  T389] R13: 00000000686e5664 R14: 0000000000499600 R15: 00007ffca5612750
| [   27.173703][  T406] ------------[ cut here ]------------
| [ 27.175318][ T406] WARNING: CPU: 1 PID: 406 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) 
| [   27.175939][  T406] Modules linked in: ip_gre gre
| [   27.176897][  T406] Tainted: [W]=WARN
[   27.177131][  T406] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 27.177512][ T406] 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) 
[ 27.177844][ T406] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   27.178956][  T406] RSP: 0018:ffffc90000d77000 EFLAGS: 00010246
[   27.179345][  T406] RAX: 0000000000000000 RBX: ffff88800ea79000 RCX: 0000000000000001
[   27.179814][  T406] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   27.180273][  T406] RBP: ffffc90000d770e8 R08: ffff88800ea79218 R09: 0000000000000000
[   27.180747][  T406] R10: ffffc90000d77118 R11: ffff88800ea79000 R12: 1ffff920001aee04
[   27.181212][  T406] R13: 00000000000005c4 R14: ffffc90000d77118 R15: ffff88800ea79218
[   27.181671][  T406] FS:  00007f4aa0587800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   27.182230][  T406] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.182638][  T406] CR2: 0000000000436890 CR3: 000000000e5ea004 CR4: 0000000000772ef0
[   27.183251][  T406] PKRU: 55555554
[   27.183482][  T406] Call Trace:
[   27.183710][  T406]  <TASK>
[ 27.183890][ T406] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 27.184206][ T406] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 27.184509][ T406] ? packet_notifier (net/packet/af_packet.c:4286) 
[ 27.184823][ T406] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 27.185134][ T406] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 27.185447][ T406] netif_set_mtu (net/core/dev.c:9652) 
[ 27.185754][ T406] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 27.186086][ T406] ? __pfx_register_netdevice (net/core/dev.c:11036) 
[ 27.186400][ T406] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 27.186640][ T406] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 27.187000][ T406] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 27.187317][ T406] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 27.187632][ T406] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 27.188027][ T406] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 27.188347][ T406] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 27.188655][ T406] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 27.188974][ T406] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 27.189278][ T406] ? __dev_get_by_name (net/core/dev.c:865) 
[ 27.189590][ T406] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 27.189931][ T406] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 27.190244][ T406] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 27.190553][ T406] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 27.190875][ T406] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 27.191193][ T406] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 27.191504][ T406] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.191829][ T406] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 27.192132][ T406] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 27.192440][ T406] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 27.192759][ T406] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 27.193076][ T406] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.193388][ T406] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.193699][ T406] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 27.194021][ T406] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 27.194334][ T406] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 27.194651][ T406] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 27.194966][ T406] ? 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) 
[ 27.195273][ T406] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 27.195581][ T406] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 27.195895][ T406] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 27.196206][ T406] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 27.196514][ T406] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 27.196828][ T406] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 27.197141][ T406] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 27.197451][ T406] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 27.197756][ T406] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 27.198167][ T406] ___sys_sendmsg (net/socket.c:2670) 
[ 27.198475][ T406] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 27.198779][ T406] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 27.199099][ T406] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 27.199407][ T406] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 27.199718][ T406] ? __handle_mm_fault (mm/memory.c:6212) 
[ 27.200037][ T406] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 27.200346][ T406] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 27.200672][ T406] __sys_sendmsg (net/socket.c:2700) 
[ 27.200986][ T406] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 27.201292][ T406] ? 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) 
[ 27.201607][ T406] ? 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) 
[ 27.201935][ T406] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 27.202245][ T406] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 27.202553][ T406] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   27.202948][  T406] RIP: 0033:0x7f4aa07541e7
[ 27.203265][ T406] 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)
[   27.204368][  T406] RSP: 002b:00007ffe4ffe8cb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   27.204844][  T406] RAX: ffffffffffffffda RBX: 00007ffe4ffe93e0 RCX: 00007f4aa07541e7
[   27.205302][  T406] RDX: 0000000000000000 RSI: 00007ffe4ffe8d20 RDI: 0000000000000005
[   27.205765][  T406] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   27.206243][  T406] R10: 00007f4aa064c6f8 R11: 0000000000000246 R12: 00007ffe4ffe9410
[   27.206707][  T406] R13: 00000000686e5665 R14: 0000000000499600 R15: 00007ffe4ffe8e10
| [   28.728732][  T423] ------------[ cut here ]------------
| [ 28.729089][ T423] WARNING: CPU: 3 PID: 423 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) 
| [   28.729693][  T423] Modules linked in: ip_gre gre
| [   28.730671][  T423] Tainted: [W]=WARN
[   28.730915][  T423] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 28.731303][ T423] 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) 
[ 28.731624][ T423] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   28.732747][  T423] RSP: 0018:ffffc90000e27000 EFLAGS: 00010246
[   28.733148][  T423] RAX: 0000000000000000 RBX: ffff88800cae4000 RCX: 0000000000000001
[   28.733623][  T423] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   28.734273][  T423] RBP: ffffc90000e270e8 R08: ffff88800cae4218 R09: 0000000000000000
[   28.734741][  T423] R10: ffffc90000e27118 R11: ffffffffb638d1e0 R12: 1ffff920001c4e04
[   28.735302][  T423] R13: 000000000000ffe7 R14: ffffc90000e27118 R15: ffff88800cae4218
[   28.735760][  T423] FS:  00007f79e115c800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   28.736310][  T423] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.736698][  T423] CR2: 0000000000436890 CR3: 000000000e7c6001 CR4: 0000000000772ef0
[   28.737170][  T423] PKRU: 55555554
[   28.737405][  T423] Call Trace:
[   28.737648][  T423]  <TASK>
[ 28.737822][ T423] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 28.738211][ T423] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 28.738523][ T423] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 28.738847][ T423] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 28.739171][ T423] netif_set_mtu (net/core/dev.c:9652) 
[ 28.739481][ T423] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 28.739816][ T423] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 28.740058][ T423] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 28.740366][ T423] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 28.740682][ T423] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 28.741007][ T423] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 28.741396][ T423] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 28.741712][ T423] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 28.742036][ T423] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 28.742348][ T423] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 28.742670][ T423] ? __dev_get_by_name (net/core/dev.c:865) 
[ 28.742988][ T423] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 28.743311][ T423] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 28.743640][ T423] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 28.743970][ T423] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 28.744300][ T423] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 28.744641][ T423] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 28.744984][ T423] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 28.745319][ T423] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 28.745644][ T423] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.745990][ T423] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 28.746311][ T423] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 28.746631][ T423] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 28.746953][ T423] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.747275][ T423] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 28.747591][ T423] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 28.747931][ T423] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 28.748262][ T423] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 28.748566][ T423] ? 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) 
[ 28.748896][ T423] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 28.749205][ T423] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 28.749510][ T423] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.749837][ T423] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 28.750147][ T423] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 28.750452][ T423] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 28.750767][ T423] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 28.751086][ T423] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 28.751396][ T423] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 28.751801][ T423] ___sys_sendmsg (net/socket.c:2670) 
[ 28.752110][ T423] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 28.752416][ T423] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 28.752738][ T423] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 28.753055][ T423] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 28.753379][ T423] ? __handle_mm_fault (mm/memory.c:6212) 
[ 28.753686][ T423] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 28.754003][ T423] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 28.754333][ T423] __sys_sendmsg (net/socket.c:2700) 
[ 28.754653][ T423] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 28.754972][ T423] ? 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) 
[ 28.755291][ T423] ? 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) 
[ 28.755596][ T423] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.755914][ T423] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 28.756232][ T423] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.756608][  T423] RIP: 0033:0x7f79e13291e7
[ 28.756933][ T423] 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)
[   28.758063][  T423] RSP: 002b:00007fff934765e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   28.758535][  T423] RAX: ffffffffffffffda RBX: 00007fff93476d10 RCX: 00007f79e13291e7
[   28.759017][  T423] RDX: 0000000000000000 RSI: 00007fff93476650 RDI: 0000000000000005
[   28.759494][  T423] RBP: 0000000000000004 R08: 00000000000000b4 R09: 0000000000000000
[   28.759972][  T423] R10: 00007f79e12216f8 R11: 0000000000000246 R12: 00007fff93476d40
[   28.760454][  T423] R13: 00000000686e5667 R14: 0000000000499600 R15: 00007fff93476740
| [   30.173413][  T439] ------------[ cut here ]------------
| [ 30.173819][ T439] WARNING: CPU: 3 PID: 439 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) 
| [   30.174455][  T439] Modules linked in: ip_gre gre
| [   30.175455][  T439] Tainted: [W]=WARN
[   30.175701][  T439] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.176118][ T439] 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) 
[ 30.176461][ T439] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   30.177603][  T439] RSP: 0018:ffffc90000ef7000 EFLAGS: 00010246
[   30.178033][  T439] RAX: 0000000000000000 RBX: ffff888004cd9000 RCX: 0000000000000001
[   30.178518][  T439] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   30.179023][  T439] RBP: ffffc90000ef70e8 R08: ffff888004cd9218 R09: 0000000000000000
[   30.179517][  T439] R10: ffffc90000ef7118 R11: ffffffffb638d1e0 R12: 1ffff920001dee04
[   30.180013][  T439] R13: 000000000000ffe7 R14: ffffc90000ef7118 R15: ffff888004cd9218
[   30.180500][  T439] FS:  00007f169f8ca800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   30.181077][  T439] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.181485][  T439] CR2: 0000000000436890 CR3: 0000000010e4a004 CR4: 0000000000772ef0
[   30.181972][  T439] PKRU: 55555554
[   30.182211][  T439] Call Trace:
[   30.182447][  T439]  <TASK>
[ 30.182615][ T439] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 30.183026][ T439] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 30.183350][ T439] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 30.183662][ T439] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 30.183987][ T439] netif_set_mtu (net/core/dev.c:9652) 
[ 30.184294][ T439] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 30.184633][ T439] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 30.184885][ T439] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 30.185195][ T439] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 30.185538][ T439] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 30.185872][ T439] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 30.186267][ T439] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 30.186584][ T439] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 30.186919][ T439] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 30.187233][ T439] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 30.187542][ T439] ? __dev_get_by_name (net/core/dev.c:865) 
[ 30.187876][ T439] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 30.188193][ T439] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 30.188516][ T439] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 30.188859][ T439] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 30.189197][ T439] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 30.189520][ T439] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 30.189844][ T439] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 30.190167][ T439] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 30.190473][ T439] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 30.190790][ T439] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 30.191100][ T439] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 30.191421][ T439] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 30.191733][ T439] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 30.192057][ T439] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 30.192366][ T439] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 30.192719][ T439] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 30.193053][ T439] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 30.193379][ T439] ? 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) 
[ 30.193699][ T439] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 30.194018][ T439] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 30.194324][ T439] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 30.194641][ T439] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 30.194975][ T439] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 30.195282][ T439] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 30.195609][ T439] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 30.195928][ T439] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 30.196234][ T439] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 30.196636][ T439] ___sys_sendmsg (net/socket.c:2670) 
[ 30.196971][ T439] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 30.197310][ T439] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 30.197634][ T439] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 30.197964][ T439] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 30.198277][ T439] ? __handle_mm_fault (mm/memory.c:6212) 
[ 30.198584][ T439] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 30.198894][ T439] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 30.199249][ T439] __sys_sendmsg (net/socket.c:2700) 
[ 30.199570][ T439] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 30.199898][ T439] ? 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) 
[ 30.200216][ T439] ? 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) 
[ 30.200521][ T439] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 30.200839][ T439] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 30.201149][ T439] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   30.201535][  T439] RIP: 0033:0x7f169fa971e7
[ 30.201872][ T439] 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)
[   30.202990][  T439] RSP: 002b:00007ffff95403e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   30.203455][  T439] RAX: ffffffffffffffda RBX: 00007ffff9540b10 RCX: 00007f169fa971e7
[   30.203945][  T439] RDX: 0000000000000000 RSI: 00007ffff9540450 RDI: 0000000000000005
[   30.204420][  T439] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   30.204911][  T439] R10: 00007f169f98f6f8 R11: 0000000000000246 R12: 00007ffff9540b40
[   30.205397][  T439] R13: 00000000686e5668 R14: 0000000000499600 R15: 00007ffff9540540
| [   31.637096][  T455] ------------[ cut here ]------------
| [ 31.637515][ T455] WARNING: CPU: 1 PID: 455 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) 
| [   31.638137][  T455] Modules linked in: ip_gre gre
| [   31.639107][  T455] Tainted: [W]=WARN
[   31.639345][  T455] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 31.639735][ T455] 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) 
[ 31.640061][ T455] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   31.641159][  T455] RSP: 0018:ffffc90000fc7000 EFLAGS: 00010246
[   31.641555][  T455] RAX: 0000000000000000 RBX: ffff88800a399000 RCX: 0000000000000001
[   31.642021][  T455] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   31.642476][  T455] RBP: ffffc90000fc70e8 R08: ffff88800a399218 R09: 0000000000000000
[   31.642956][  T455] R10: ffffc90000fc7118 R11: ffff88800a399000 R12: 1ffff920001f8e04
[   31.643425][  T455] R13: 00000000000005c4 R14: ffffc90000fc7118 R15: ffff88800a399218
[   31.644554][  T455] FS:  00007f04ea34c800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   31.645102][  T455] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.645491][  T455] CR2: 0000000000436890 CR3: 0000000010f4f001 CR4: 0000000000772ef0
[   31.645957][  T455] PKRU: 55555554
[   31.646186][  T455] Call Trace:
[   31.646413][  T455]  <TASK>
[ 31.646568][ T455] ? packet_notifier (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/packet/af_packet.c:4283) 
[ 31.646896][ T455] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 31.647212][ T455] ? packet_notifier (net/packet/af_packet.c:4286) 
[ 31.647518][ T455] ? __pfx_vlan_device_event (net/8021q/vlan.c:362) 
[ 31.647839][ T455] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 31.648152][ T455] netif_set_mtu (net/core/dev.c:9652) 
[ 31.648456][ T455] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 31.648770][ T455] ? __pfx_register_netdevice (net/core/dev.c:11036) 
[ 31.649092][ T455] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 31.649324][ T455] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 31.649632][ T455] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 31.649957][ T455] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 31.650272][ T455] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 31.650651][ T455] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 31.650998][ T455] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 31.651311][ T455] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 31.651618][ T455] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 31.651930][ T455] ? __dev_get_by_name (net/core/dev.c:865) 
[ 31.652239][ T455] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 31.652543][ T455] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 31.652872][ T455] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 31.653176][ T455] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 31.653493][ T455] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 31.653826][ T455] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 31.654141][ T455] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 31.654458][ T455] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 31.654767][ T455] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 31.655092][ T455] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 31.655405][ T455] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 31.655711][ T455] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 31.656026][ T455] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.656338][ T455] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 31.656645][ T455] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 31.656966][ T455] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 31.657284][ T455] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 31.657591][ T455] ? 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) 
[ 31.657906][ T455] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 31.658214][ T455] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 31.658518][ T455] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 31.658843][ T455] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 31.659162][ T455] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 31.659468][ T455] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 31.659779][ T455] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 31.660097][ T455] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 31.660400][ T455] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 31.660804][ T455] ___sys_sendmsg (net/socket.c:2670) 
[ 31.661112][ T455] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 31.661419][ T455] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 31.661727][ T455] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 31.662037][ T455] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 31.662351][ T455] ? __handle_mm_fault (mm/memory.c:6212) 
[ 31.662662][ T455] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 31.662982][ T455] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 31.663308][ T455] __sys_sendmsg (net/socket.c:2700) 
[ 31.663617][ T455] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 31.663930][ T455] ? 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) 
[ 31.664245][ T455] ? 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) 
[ 31.664550][ T455] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 31.664873][ T455] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 31.665186][ T455] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.665565][  T455] RIP: 0033:0x7f04ea5191e7
[ 31.665892][ T455] 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)
[   31.666993][  T455] RSP: 002b:00007ffe7363bb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   31.667458][  T455] RAX: ffffffffffffffda RBX: 00007ffe7363c260 RCX: 00007f04ea5191e7
[   31.667927][  T455] RDX: 0000000000000000 RSI: 00007ffe7363bba0 RDI: 0000000000000005
[   31.668385][  T455] RBP: 0000000000000004 R08: 00000000000000ac R09: 0000000000000000
[   31.668858][  T455] R10: 00007f04ea4116f8 R11: 0000000000000246 R12: 00007ffe7363c290
[   31.669316][  T455] R13: 00000000686e566a R14: 0000000000499600 R15: 00007ffe7363bc90
| [   33.089765][  T471] ------------[ cut here ]------------
| [ 33.090203][ T471] WARNING: CPU: 1 PID: 471 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) 
| [   33.090817][  T471] Modules linked in: ip_gre gre
| [   33.091759][  T471] Tainted: [W]=WARN
[   33.092000][  T471] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 33.092381][ T471] 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) 
[ 33.092708][ T471] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   33.093811][  T471] RSP: 0018:ffffc90001057000 EFLAGS: 00010246
[   33.094201][  T471] RAX: 0000000000000000 RBX: ffff88800901c000 RCX: 0000000000000001
[   33.094659][  T471] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   33.095127][  T471] RBP: ffffc900010570e8 R08: ffff88800901c218 R09: 0000000000000000
[   33.095596][  T471] R10: ffffc90001057118 R11: ffffffffb638d1e0 R12: 1ffff9200020ae04
[   33.096071][  T471] R13: 000000000000ffd9 R14: ffffc90001057118 R15: ffff88800901c218
[   33.096533][  T471] FS:  00007fc8a5236800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   33.097077][  T471] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.097464][  T471] CR2: 0000000000436890 CR3: 0000000010f1e005 CR4: 0000000000772ef0
[   33.097940][  T471] PKRU: 55555554
[   33.098173][  T471] Call Trace:
[   33.098403][  T471]  <TASK>
[ 33.098561][ T471] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 33.098954][ T471] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 33.099266][ T471] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 33.099577][ T471] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 33.099905][ T471] netif_set_mtu (net/core/dev.c:9652) 
[ 33.100212][ T471] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 33.100528][ T471] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 33.100846][ T471] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 33.101083][ T471] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 33.101393][ T471] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 33.101709][ T471] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 33.102035][ T471] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 33.102414][ T471] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 33.102737][ T471] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 33.103054][ T471] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 33.103365][ T471] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 33.103670][ T471] ? __dev_get_by_name (net/core/dev.c:865) 
[ 33.103994][ T471] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 33.104299][ T471] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 33.104613][ T471] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 33.104927][ T471] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 33.105244][ T471] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 33.105560][ T471] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 33.105883][ T471] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 33.106202][ T471] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 33.106507][ T471] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 33.106829][ T471] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 33.107136][ T471] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 33.107447][ T471] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 33.107763][ T471] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 33.108084][ T471] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 33.108398][ T471] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 33.108706][ T471] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 33.109032][ T471] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 33.109341][ T471] ? 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) 
[ 33.109651][ T471] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 33.109968][ T471] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 33.110272][ T471] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 33.110584][ T471] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 33.110902][ T471] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 33.111217][ T471] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 33.111532][ T471] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 33.111855][ T471] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 33.112158][ T471] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 33.112553][ T471] ___sys_sendmsg (net/socket.c:2670) 
[ 33.112890][ T471] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 33.113197][ T471] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 33.113512][ T471] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 33.113826][ T471] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 33.114137][ T471] ? __handle_mm_fault (mm/memory.c:6212) 
[ 33.114442][ T471] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 33.114747][ T471] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 33.115085][ T471] __sys_sendmsg (net/socket.c:2700) 
[ 33.115397][ T471] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 33.115703][ T471] ? 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) 
[ 33.116028][ T471] ? 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) 
[ 33.116334][ T471] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 33.116644][ T471] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 33.116961][ T471] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.117339][  T471] RIP: 0033:0x7fc8a54031e7
[ 33.117657][ T471] 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)
[   33.118770][  T471] RSP: 002b:00007ffeca1d33e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   33.119241][  T471] RAX: ffffffffffffffda RBX: 00007ffeca1d3b10 RCX: 00007fc8a54031e7
[   33.119707][  T471] RDX: 0000000000000000 RSI: 00007ffeca1d3450 RDI: 0000000000000005
[   33.120174][  T471] RBP: 0000000000000004 R08: 00000000000000b8 R09: 0000000000000000
[   33.120634][  T471] R10: 00007fc8a52fb6f8 R11: 0000000000000246 R12: 00007ffeca1d3b40
[   33.121100][  T471] R13: 00000000686e566b R14: 0000000000499600 R15: 00007ffeca1d3544
| [   34.584744][  T487] ------------[ cut here ]------------
| [ 34.585222][ T487] WARNING: CPU: 2 PID: 487 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) 
| [   34.585895][  T487] Modules linked in: ip_gre gre
| [   34.586901][  T487] Tainted: [W]=WARN
[   34.587155][  T487] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.587564][ T487] 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) 
[ 34.587906][ T487] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   34.589028][  T487] RSP: 0018:ffffc90001127000 EFLAGS: 00010246
[   34.589433][  T487] RAX: 0000000000000000 RBX: ffff88800b889000 RCX: 0000000000000001
[   34.589936][  T487] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   34.590420][  T487] RBP: ffffc900011270e8 R08: ffff88800b889218 R09: 0000000000000000
[   34.590907][  T487] R10: ffffc90001127118 R11: ffffffffb638d1e0 R12: 1ffff92000224e04
[   34.591381][  T487] R13: 000000000000ffd9 R14: ffffc90001127118 R15: ffff88800b889218
[   34.591873][  T487] FS:  00007efeeeb34800(0000) GS:ffff8880b5099000(0000) knlGS:0000000000000000
[   34.592427][  T487] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.592850][  T487] CR2: 00007efeeed8fb78 CR3: 000000001089c002 CR4: 0000000000772ef0
[   34.593328][  T487] PKRU: 55555554
[   34.593576][  T487] Call Trace:
[   34.593847][  T487]  <TASK>
[ 34.594029][ T487] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 34.594433][ T487] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 34.594762][ T487] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 34.595099][ T487] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 34.595432][ T487] netif_set_mtu (net/core/dev.c:9652) 
[ 34.595756][ T487] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 34.596100][ T487] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 34.596431][ T487] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 34.596679][ T487] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 34.597014][ T487] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 34.597344][ T487] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 34.597671][ T487] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 34.598092][ T487] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 34.598436][ T487] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 34.598764][ T487] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 34.599101][ T487] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 34.599418][ T487] ? __dev_get_by_name (net/core/dev.c:865) 
[ 34.599742][ T487] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 34.600070][ T487] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 34.600399][ T487] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 34.600717][ T487] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 34.601058][ T487] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 34.601390][ T487] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 34.601718][ T487] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 34.602075][ T487] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 34.602399][ T487] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 34.602729][ T487] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 34.603063][ T487] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 34.603386][ T487] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 34.603715][ T487] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 34.604069][ T487] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 34.604395][ T487] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 34.604719][ T487] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 34.605063][ T487] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 34.605385][ T487] ? 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) 
[ 34.605707][ T487] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 34.606060][ T487] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 34.606386][ T487] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 34.606714][ T487] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 34.607050][ T487] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 34.607375][ T487] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 34.607704][ T487] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 34.608040][ T487] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 34.608363][ T487] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 34.608776][ T487] ___sys_sendmsg (net/socket.c:2670) 
[ 34.609110][ T487] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 34.609433][ T487] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 34.609759][ T487] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 34.610103][ T487] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 34.610437][ T487] ? __handle_mm_fault (mm/memory.c:6212) 
[ 34.610763][ T487] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 34.611092][ T487] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 34.611435][ T487] __sys_sendmsg (net/socket.c:2700) 
[ 34.611757][ T487] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 34.612088][ T487] ? 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) 
[ 34.612420][ T487] ? 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) 
[ 34.612754][ T487] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 34.613094][ T487] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 34.613419][ T487] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.613832][  T487] RIP: 0033:0x7efeeed011e7
[ 34.614173][ T487] 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)
[   34.615299][  T487] RSP: 002b:00007fffb89e0498 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.615777][  T487] RAX: ffffffffffffffda RBX: 00007fffb89e0bc0 RCX: 00007efeeed011e7
[   34.616261][  T487] RDX: 0000000000000000 RSI: 00007fffb89e0500 RDI: 0000000000000005
[   34.616737][  T487] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   34.617221][  T487] R10: 00007efeeebf96f8 R11: 0000000000000246 R12: 00007fffb89e0bf0
[   34.617693][  T487] R13: 00000000686e566d R14: 0000000000499600 R15: 00007fffb89e05f4
| [   36.001290][  T503] ------------[ cut here ]------------
| [ 36.001678][ T503] WARNING: CPU: 2 PID: 503 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) 
| [   36.002320][  T503] Modules linked in: ip_gre gre
| [   36.003353][  T503] Tainted: [W]=WARN
[   36.003605][  T503] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 36.004029][ T503] 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) 
[ 36.004361][ T503] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   36.005487][  T503] RSP: 0018:ffffc900011f7000 EFLAGS: 00010246
[   36.005907][  T503] RAX: 0000000000000000 RBX: ffff888004ed4000 RCX: 0000000000000001
[   36.006382][  T503] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   36.006873][  T503] RBP: ffffc900011f70e8 R08: ffff888004ed4218 R09: 0000000000000000
[   36.007356][  T503] R10: ffffc900011f7118 R11: 6ea6bf37004d87a3 R12: 1ffff9200023ee04
[   36.007842][  T503] R13: 00000000000005b6 R14: ffffc900011f7118 R15: ffff888004ed4218
[   36.008320][  T503] FS:  00007faebccdb800(0000) GS:ffff8880b5099000(0000) knlGS:0000000000000000
[   36.008884][  T503] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.009288][  T503] CR2: 0000000000436890 CR3: 0000000010ec3006 CR4: 0000000000772ef0
[   36.009765][  T503] PKRU: 55555554
[   36.010020][  T503] Call Trace:
[   36.010267][  T503]  <TASK>
[ 36.010439][ T503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 36.010766][ T503] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 36.011102][ T503] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 36.011428][ T503] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 36.011756][ T503] netif_set_mtu (net/core/dev.c:9652) 
[ 36.012107][ T503] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 36.012441][ T503] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 36.012807][ T503] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 36.013063][ T503] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 36.013395][ T503] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 36.013737][ T503] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 36.014091][ T503] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 36.014495][ T503] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 36.014867][ T503] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 36.015205][ T503] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 36.015539][ T503] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 36.015879][ T503] ? __dev_get_by_name (net/core/dev.c:865) 
[ 36.016220][ T503] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 36.016546][ T503] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 36.016888][ T503] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 36.017211][ T503] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 36.017535][ T503] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 36.017881][ T503] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 36.018215][ T503] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 36.018550][ T503] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 36.018883][ T503] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 36.019210][ T503] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 36.019530][ T503] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 36.019865][ T503] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 36.020191][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 36.020517][ T503] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 36.020856][ T503] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 36.021184][ T503] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 36.021516][ T503] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 36.021851][ T503] ? 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) 
[ 36.022195][ T503] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 36.022526][ T503] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 36.022878][ T503] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 36.023213][ T503] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 36.023547][ T503] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 36.023892][ T503] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 36.024229][ T503] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 36.024557][ T503] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 36.024903][ T503] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 36.025315][ T503] ___sys_sendmsg (net/socket.c:2670) 
[ 36.025648][ T503] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 36.025980][ T503] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 36.026311][ T503] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 36.026631][ T503] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 36.026968][ T503] ? __handle_mm_fault (mm/memory.c:6212) 
[ 36.027288][ T503] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 36.027616][ T503] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 36.027968][ T503] __sys_sendmsg (net/socket.c:2700) 
[ 36.028292][ T503] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 36.028614][ T503] ? 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) 
[ 36.028955][ T503] ? 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) 
[ 36.029281][ T503] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 36.029607][ T503] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 36.029963][ T503] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.030368][  T503] RIP: 0033:0x7faebcea81e7
[ 36.030709][ T503] 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)
[   36.031854][  T503] RSP: 002b:00007ffed45cb7f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.032342][  T503] RAX: ffffffffffffffda RBX: 00007ffed45cbf20 RCX: 00007faebcea81e7
[   36.032865][  T503] RDX: 0000000000000000 RSI: 00007ffed45cb860 RDI: 0000000000000005
[   36.033355][  T503] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   36.033866][  T503] R10: 00007faebcda06f8 R11: 0000000000000246 R12: 00007ffed45cbf50
[   36.034348][  T503] R13: 00000000686e566e R14: 0000000000499600 R15: 00007ffed45cb954
| [   37.451651][  T519] ------------[ cut here ]------------
| [ 37.452009][ T519] WARNING: CPU: 0 PID: 519 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) 
| [   37.452622][  T519] Modules linked in: ip_gre gre
| [   37.453572][  T519] Tainted: [W]=WARN
[   37.453823][  T519] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 37.454208][ T519] 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) 
[ 37.454525][ T519] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   37.455628][  T519] RSP: 0018:ffffc900012b7000 EFLAGS: 00010246
[   37.456023][  T519] RAX: 0000000000000000 RBX: ffff88800a639000 RCX: 0000000000000001
[   37.456483][  T519] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   37.456952][  T519] RBP: ffffc900012b70e8 R08: ffff88800a639218 R09: 0000000000000000
[   37.457412][  T519] R10: ffffc900012b7118 R11: ffffffffb638d1e0 R12: 1ffff92000256e04
[   37.457882][  T519] R13: 000000000000ffd9 R14: ffffc900012b7118 R15: ffff88800a639218
[   37.458358][  T519] FS:  00007f54d3964800(0000) GS:ffff8880b4f99000(0000) knlGS:0000000000000000
[   37.458900][  T519] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.459301][  T519] CR2: 00007f54d3bbfb78 CR3: 000000000524b003 CR4: 0000000000772ef0
[   37.459765][  T519] PKRU: 55555554
[   37.460009][  T519] Call Trace:
[   37.460241][  T519]  <TASK>
[ 37.460397][ T519] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 37.460778][ T519] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 37.461102][ T519] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 37.461410][ T519] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 37.461726][ T519] netif_set_mtu (net/core/dev.c:9652) 
[ 37.462041][ T519] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 37.462358][ T519] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 37.462671][ T519] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 37.462914][ T519] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 37.463225][ T519] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 37.463538][ T519] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 37.463862][ T519] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 37.464243][ T519] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 37.464563][ T519] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 37.464885][ T519] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 37.465194][ T519] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 37.465502][ T519] ? __dev_get_by_name (net/core/dev.c:865) 
[ 37.465819][ T519] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 37.466126][ T519] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 37.466439][ T519] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 37.466747][ T519] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 37.467083][ T519] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 37.467399][ T519] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 37.467712][ T519] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 37.468040][ T519] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 37.468345][ T519] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 37.468654][ T519] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 37.468967][ T519] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 37.469278][ T519] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 37.469593][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 37.469919][ T519] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 37.470236][ T519] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 37.470545][ T519] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 37.470872][ T519] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 37.471177][ T519] ? 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) 
[ 37.471483][ T519] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 37.471809][ T519] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 37.472114][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 37.472426][ T519] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 37.472740][ T519] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 37.473055][ T519] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 37.473371][ T519] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 37.473683][ T519] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 37.474002][ T519] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 37.474397][ T519] ___sys_sendmsg (net/socket.c:2670) 
[ 37.474706][ T519] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 37.475020][ T519] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 37.475333][ T519] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 37.475636][ T519] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 37.475970][ T519] ? __handle_mm_fault (mm/memory.c:6212) 
[ 37.476284][ T519] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 37.476588][ T519] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 37.476921][ T519] __sys_sendmsg (net/socket.c:2700) 
[ 37.477229][ T519] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 37.477541][ T519] ? 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) 
[ 37.477863][ T519] ? 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) 
[ 37.478170][ T519] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 37.478486][ T519] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 37.478802][ T519] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.479185][  T519] RIP: 0033:0x7f54d3b311e7
[ 37.479502][ T519] 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)
[   37.480610][  T519] RSP: 002b:00007fff8e2f9668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   37.481083][  T519] RAX: ffffffffffffffda RBX: 00007fff8e2f9d90 RCX: 00007f54d3b311e7
[   37.481545][  T519] RDX: 0000000000000000 RSI: 00007fff8e2f96d0 RDI: 0000000000000005
[   37.482014][  T519] RBP: 0000000000000004 R08: 00000000000000b8 R09: 0000000000000000
[   37.482480][  T519] R10: 00007f54d3a296f8 R11: 0000000000000246 R12: 00007fff8e2f9dc0
[   37.482954][  T519] R13: 00000000686e5670 R14: 0000000000499600 R15: 00007fff8e2f97c4
| [   38.904160][  T535] ------------[ cut here ]------------
| [ 38.904575][ T535] WARNING: CPU: 1 PID: 535 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) 
| [   38.906447][  T535] Modules linked in: ip_gre gre
| [   38.907406][  T535] Tainted: [W]=WARN
[   38.907641][  T535] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 38.908039][ T535] 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) 
[ 38.908354][ T535] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   38.909466][  T535] RSP: 0018:ffffc90000c37000 EFLAGS: 00010246
[   38.909867][  T535] RAX: 0000000000000000 RBX: ffff888007c99000 RCX: 0000000000000001
[   38.910323][  T535] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   38.910802][  T535] RBP: ffffc90000c370e8 R08: ffff888007c99218 R09: 0000000000000000
[   38.911278][  T535] R10: ffffc90000c37118 R11: ffffffffb638d1e0 R12: 1ffff92000186e04
[   38.911735][  T535] R13: 000000000000ffd9 R14: ffffc90000c37118 R15: ffff888007c99218
[   38.912215][  T535] FS:  00007f76b150a800(0000) GS:ffff8880b5019000(0000) knlGS:0000000000000000
[   38.912762][  T535] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   38.913176][  T535] CR2: 0000000000436890 CR3: 000000000cffe002 CR4: 0000000000772ef0
[   38.913648][  T535] PKRU: 55555554
[   38.913896][  T535] Call Trace:
[   38.914138][  T535]  <TASK>
[ 38.914303][ T535] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 38.914699][ T535] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 38.915030][ T535] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 38.915352][ T535] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 38.915677][ T535] netif_set_mtu (net/core/dev.c:9652) 
[ 38.916020][ T535] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 38.916338][ T535] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 38.916651][ T535] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 38.916895][ T535] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 38.917217][ T535] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 38.917531][ T535] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 38.917858][ T535] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 38.918245][ T535] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 38.918561][ T535] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 38.918883][ T535] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 38.919205][ T535] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 38.919516][ T535] ? __dev_get_by_name (net/core/dev.c:865) 
[ 38.919833][ T535] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 38.920137][ T535] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 38.920448][ T535] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 38.920749][ T535] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 38.921077][ T535] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 38.921396][ T535] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 38.921729][ T535] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 38.922059][ T535] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 38.922363][ T535] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 38.922688][ T535] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 38.923007][ T535] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 38.923329][ T535] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 38.923646][ T535] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 38.923968][ T535] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 38.924276][ T535] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 38.924584][ T535] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 38.924922][ T535] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 38.925236][ T535] ? 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) 
[ 38.925545][ T535] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 38.925874][ T535] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 38.926182][ T535] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 38.926495][ T535] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 38.926828][ T535] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 38.927141][ T535] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 38.927468][ T535] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 38.927777][ T535] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 38.928103][ T535] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 38.928503][ T535] ___sys_sendmsg (net/socket.c:2670) 
[ 38.928826][ T535] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 38.929141][ T535] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 38.929452][ T535] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 38.929757][ T535] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 38.930078][ T535] ? __handle_mm_fault (mm/memory.c:6212) 
[ 38.930388][ T535] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 38.930690][ T535] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 38.931028][ T535] __sys_sendmsg (net/socket.c:2700) 
[ 38.931340][ T535] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 38.931646][ T535] ? 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) 
[ 38.931977][ T535] ? 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) 
[ 38.932291][ T535] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 38.932611][ T535] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 38.932930][ T535] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   38.933312][  T535] RIP: 0033:0x7f76b16d71e7
[ 38.933629][ T535] 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)
[   38.934750][  T535] RSP: 002b:00007fff957cc318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   38.935228][  T535] RAX: ffffffffffffffda RBX: 00007fff957cca40 RCX: 00007f76b16d71e7
[   38.935696][  T535] RDX: 0000000000000000 RSI: 00007fff957cc380 RDI: 0000000000000005
[   38.936186][  T535] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   38.936662][  T535] R10: 00007f76b15cf6f8 R11: 0000000000000246 R12: 00007fff957cca70
[   38.937144][  T535] R13: 00000000686e5671 R14: 0000000000499600 R15: 00007fff957cc474
| [   40.356865][  T551] ------------[ cut here ]------------
| [ 40.357283][ T551] WARNING: CPU: 3 PID: 551 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) 
| [   40.357907][  T551] Modules linked in: ip_gre gre
| [   40.358855][  T551] Tainted: [W]=WARN
[   40.359092][  T551] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.359478][ T551] 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) 
[ 40.359801][ T551] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   40.360906][  T551] RSP: 0018:ffffc90001417000 EFLAGS: 00010246
[   40.361294][  T551] RAX: 0000000000000000 RBX: ffff88800b1a4000 RCX: 0000000000000001
[   40.361758][  T551] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   40.362224][  T551] RBP: ffffc900014170e8 R08: ffff88800b1a4218 R09: 0000000000000000
[   40.362689][  T551] R10: ffffc90001417118 R11: 401408799a0c397d R12: 1ffff92000282e04
[   40.363158][  T551] R13: 00000000000005b6 R14: ffffc90001417118 R15: ffff88800b1a4218
[   40.363618][  T551] FS:  00007f7cb5254800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   40.364170][  T551] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.364559][  T551] CR2: 00007f7cb54afb78 CR3: 00000000108b1004 CR4: 0000000000772ef0
[   40.365028][  T551] PKRU: 55555554
[   40.365260][  T551] Call Trace:
[   40.365490][  T551]  <TASK>
[ 40.365649][ T551] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.365970][ T551] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.366283][ T551] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 40.366590][ T551] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 40.366912][ T551] netif_set_mtu (net/core/dev.c:9652) 
[ 40.367218][ T551] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 40.367536][ T551] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 40.367853][ T551] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 40.368088][ T551] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 40.368396][ T551] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 40.368712][ T551] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 40.369034][ T551] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 40.369420][ T551] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.369737][ T551] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 40.370074][ T551] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 40.370387][ T551] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 40.370689][ T551] ? __dev_get_by_name (net/core/dev.c:865) 
[ 40.371008][ T551] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 40.371314][ T551] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 40.371626][ T551] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.371937][ T551] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 40.372250][ T551] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 40.372569][ T551] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.372894][ T551] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.373218][ T551] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.373527][ T551] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.373842][ T551] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.374147][ T551] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.374458][ T551] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.374768][ T551] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.375085][ T551] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.375392][ T551] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.375697][ T551] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.376019][ T551] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.376327][ T551] ? 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) 
[ 40.376637][ T551] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 40.376955][ T551] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.377264][ T551] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.377576][ T551] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.377896][ T551] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.378204][ T551] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.378517][ T551] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.378834][ T551] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.379139][ T551] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.379536][ T551] ___sys_sendmsg (net/socket.c:2670) 
[ 40.379854][ T551] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.380160][ T551] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 40.380472][ T551] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 40.380775][ T551] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 40.381093][ T551] ? __handle_mm_fault (mm/memory.c:6212) 
[ 40.381400][ T551] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 40.381703][ T551] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 40.382048][ T551] __sys_sendmsg (net/socket.c:2700) 
[ 40.382356][ T551] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.382667][ T551] ? 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) 
[ 40.382992][ T551] ? 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) 
[ 40.383301][ T551] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.383611][ T551] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.383927][ T551] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.384304][  T551] RIP: 0033:0x7f7cb54211e7
[ 40.384620][ T551] 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)
[   40.385727][  T551] RSP: 002b:00007fff2a4c5e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.386204][  T551] RAX: ffffffffffffffda RBX: 00007fff2a4c6570 RCX: 00007f7cb54211e7
[   40.386664][  T551] RDX: 0000000000000000 RSI: 00007fff2a4c5eb0 RDI: 0000000000000005
[   40.387136][  T551] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   40.387600][  T551] R10: 00007f7cb53196f8 R11: 0000000000000246 R12: 00007fff2a4c65a0
[   40.388077][  T551] R13: 00000000686e5673 R14: 0000000000499600 R15: 00007fff2a4c5fa4
| [   41.790557][  T567] ------------[ cut here ]------------
| [ 41.791250][ T567] WARNING: CPU: 2 PID: 567 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) 
| [   41.791905][  T567] Modules linked in: ip_gre gre
| [   41.792898][  T567] Tainted: [W]=WARN
[   41.793149][  T567] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 41.793559][ T567] 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) 
[ 41.793904][ T567] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   41.795026][  T567] RSP: 0018:ffffc90001417000 EFLAGS: 00010246
[   41.795431][  T567] RAX: 0000000000000000 RBX: ffff888010d6c000 RCX: 0000000000000001
[   41.795914][  T567] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   41.796397][  T567] RBP: ffffc900014170e8 R08: ffff888010d6c218 R09: 0000000000000000
[   41.796904][  T567] R10: ffffc90001417118 R11: ffffffffb638d1e0 R12: 1ffff92000282e04
[   41.797389][  T567] R13: 000000000000ffd9 R14: ffffc90001417118 R15: ffff888010d6c218
[   41.797885][  T567] FS:  00007f6b7a947800(0000) GS:ffff8880b5099000(0000) knlGS:0000000000000000
[   41.798458][  T567] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.798870][  T567] CR2: 0000000000436890 CR3: 000000000c983003 CR4: 0000000000772ef0
[   41.799351][  T567] PKRU: 55555554
[   41.799596][  T567] Call Trace:
[   41.799851][  T567]  <TASK>
[ 41.800022][ T567] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 41.800423][ T567] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.800749][ T567] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 41.801090][ T567] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 41.801423][ T567] netif_set_mtu (net/core/dev.c:9652) 
[ 41.801746][ T567] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 41.802091][ T567] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 41.802418][ T567] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 41.802677][ T567] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 41.803019][ T567] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 41.803355][ T567] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 41.803683][ T567] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 41.804095][ T567] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 41.804430][ T567] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 41.804753][ T567] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 41.805090][ T567] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 41.805411][ T567] ? __dev_get_by_name (net/core/dev.c:865) 
[ 41.805740][ T567] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 41.806072][ T567] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 41.806401][ T567] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 41.806723][ T567] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 41.807065][ T567] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 41.807399][ T567] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 41.807725][ T567] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.808069][ T567] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 41.808393][ T567] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.808718][ T567] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.809065][ T567] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 41.809395][ T567] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.809722][ T567] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.810060][ T567] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 41.810383][ T567] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.810713][ T567] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 41.811055][ T567] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 41.811376][ T567] ? 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) 
[ 41.811699][ T567] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 41.812037][ T567] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 41.812356][ T567] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.812695][ T567] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 41.813034][ T567] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 41.813360][ T567] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 41.813689][ T567] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 41.814025][ T567] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 41.814347][ T567] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 41.814762][ T567] ___sys_sendmsg (net/socket.c:2670) 
[ 41.815098][ T567] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 41.815423][ T567] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 41.815750][ T567] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 41.816079][ T567] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 41.816408][ T567] ? __handle_mm_fault (mm/memory.c:6212) 
[ 41.816728][ T567] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 41.817057][ T567] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 41.817402][ T567] __sys_sendmsg (net/socket.c:2700) 
[ 41.817725][ T567] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 41.818055][ T567] ? 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) 
[ 41.818390][ T567] ? 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) 
[ 41.818713][ T567] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.819049][ T567] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 41.819373][ T567] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.819766][  T567] RIP: 0033:0x7f6b7ab141e7
[ 41.820108][ T567] 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)
[   41.821224][  T567] RSP: 002b:00007ffcc1848478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.821702][  T567] RAX: ffffffffffffffda RBX: 00007ffcc1848ba0 RCX: 00007f6b7ab141e7
[   41.822189][  T567] RDX: 0000000000000000 RSI: 00007ffcc18484e0 RDI: 0000000000000005
[   41.822670][  T567] RBP: 0000000000000004 R08: 00000000000000b8 R09: 0000000000000000
[   41.823154][  T567] R10: 00007f6b7aa0c6f8 R11: 0000000000000246 R12: 00007ffcc1848bd0
[   41.823630][  T567] R13: 00000000686e5674 R14: 0000000000499600 R15: 00007ffcc18485d4
| [   43.375350][  T584] ------------[ cut here ]------------
| [ 43.375767][ T584] WARNING: CPU: 3 PID: 584 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) 
| [   43.376395][  T584] Modules linked in: ip_gre gre
| [   43.377351][  T584] Tainted: [W]=WARN
[   43.377588][  T584] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 43.377984][ T584] 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) 
[ 43.378308][ T584] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   43.379414][  T584] RSP: 0018:ffffc90001357000 EFLAGS: 00010246
[   43.379813][  T584] RAX: 0000000000000000 RBX: ffff88800b88c000 RCX: 0000000000000001
[   43.380275][  T584] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   43.380732][  T584] RBP: ffffc900013570e8 R08: ffff88800b88c218 R09: 0000000000000000
[   43.381200][  T584] R10: ffffc90001357118 R11: ffffffffb638d1e0 R12: 1ffff9200026ae04
[   43.381664][  T584] R13: 000000000000ffd9 R14: ffffc90001357118 R15: ffff88800b88c218
[   43.382135][  T584] FS:  00007f71be95b800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   43.382686][  T584] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   43.383083][  T584] CR2: 0000000000436890 CR3: 000000000e736004 CR4: 0000000000772ef0
[   43.383548][  T584] PKRU: 55555554
[   43.383778][  T584] Call Trace:
[   43.384021][  T584]  <TASK>
[ 43.384178][ T584] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 43.384565][ T584] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 43.384890][ T584] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 43.385199][ T584] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 43.385515][ T584] netif_set_mtu (net/core/dev.c:9652) 
[ 43.385827][ T584] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 43.386142][ T584] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 43.386452][ T584] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 43.386686][ T584] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 43.387009][ T584] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 43.387327][ T584] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 43.387639][ T584] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 43.388054][ T584] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 43.388372][ T584] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 43.388685][ T584] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 43.389007][ T584] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 43.389313][ T584] ? __dev_get_by_name (net/core/dev.c:865) 
[ 43.389623][ T584] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 43.389945][ T584] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 43.390259][ T584] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 43.390565][ T584] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 43.390886][ T584] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 43.391206][ T584] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 43.391522][ T584] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 43.391851][ T584] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 43.392157][ T584] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 43.392466][ T584] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 43.392775][ T584] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 43.393094][ T584] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 43.393402][ T584] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 43.393713][ T584] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 43.394032][ T584] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 43.394340][ T584] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 43.394656][ T584] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 43.394969][ T584] ? 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) 
[ 43.395279][ T584] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 43.395588][ T584] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 43.395907][ T584] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 43.396221][ T584] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 43.396531][ T584] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 43.396846][ T584] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 43.397162][ T584] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 43.397471][ T584] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 43.397773][ T584] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 43.398179][ T584] ___sys_sendmsg (net/socket.c:2670) 
[ 43.398491][ T584] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 43.398810][ T584] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 43.399121][ T584] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 43.399428][ T584] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 43.399736][ T584] ? __handle_mm_fault (mm/memory.c:6212) 
[ 43.400050][ T584] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 43.400361][ T584] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 43.400687][ T584] __sys_sendmsg (net/socket.c:2700) 
[ 43.401000][ T584] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 43.401304][ T584] ? 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) 
[ 43.401624][ T584] ? 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) 
[ 43.401939][ T584] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 43.402261][ T584] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 43.402575][ T584] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   43.402970][  T584] RIP: 0033:0x7f71beb281e7
[ 43.403288][ T584] 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)
[   43.404387][  T584] RSP: 002b:00007ffd3ab6f8b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   43.404881][  T584] RAX: ffffffffffffffda RBX: 00007ffd3ab6ffe0 RCX: 00007f71beb281e7
[   43.405341][  T584] RDX: 0000000000000000 RSI: 00007ffd3ab6f920 RDI: 0000000000000005
[   43.405812][  T584] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   43.406273][  T584] R10: 00007f71bea206f8 R11: 0000000000000246 R12: 00007ffd3ab70010
[   43.406735][  T584] R13: 00000000686e5676 R14: 0000000000499600 R15: 00007ffd3ab6fa14
| [   44.998211][  T601] ------------[ cut here ]------------
| [ 44.998560][ T601] WARNING: CPU: 3 PID: 601 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) 
| [   45.000121][  T601] Modules linked in: ip_gre gre
| [   45.001076][  T601] Tainted: [W]=WARN
[   45.001313][  T601] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 45.001700][ T601] 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) 
[ 45.002029][ T601] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   45.003160][  T601] RSP: 0018:ffffc90001607000 EFLAGS: 00010246
[   45.003551][  T601] RAX: 0000000000000000 RBX: ffff888008c81000 RCX: 0000000000000001
[   45.004024][  T601] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   45.004491][  T601] RBP: ffffc900016070e8 R08: ffff888008c81218 R09: 0000000000000000
[   45.004959][  T601] R10: ffffc90001607118 R11: a4b18c81a28dbcc8 R12: 1ffff920002c0e04
[   45.005419][  T601] R13: 00000000000005b6 R14: ffffc90001607118 R15: ffff888008c81218
[   45.005889][  T601] FS:  00007fdafd8c6800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   45.006428][  T601] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   45.006818][  T601] CR2: 0000000000436890 CR3: 0000000010f55003 CR4: 0000000000772ef0
[   45.007280][  T601] PKRU: 55555554
[   45.007522][  T601] Call Trace:
[   45.007757][  T601]  <TASK>
[ 45.007923][ T601] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 45.008236][ T601] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 45.008546][ T601] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 45.008861][ T601] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 45.009182][ T601] netif_set_mtu (net/core/dev.c:9652) 
[ 45.009489][ T601] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 45.009822][ T601] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 45.010134][ T601] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 45.010373][ T601] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 45.010689][ T601] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 45.011024][ T601] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 45.011360][ T601] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 45.011743][ T601] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 45.012085][ T601] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 45.012400][ T601] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 45.012719][ T601] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 45.013031][ T601] ? __dev_get_by_name (net/core/dev.c:865) 
[ 45.013338][ T601] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 45.013643][ T601] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 45.013965][ T601] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 45.014282][ T601] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 45.014598][ T601] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 45.014945][ T601] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 45.015260][ T601] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 45.015584][ T601] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 45.015900][ T601] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 45.016213][ T601] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 45.016522][ T601] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 45.016844][ T601] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 45.017163][ T601] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.017475][ T601] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 45.017793][ T601] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 45.018101][ T601] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 45.018422][ T601] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 45.018730][ T601] ? 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) 
[ 45.019048][ T601] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 45.019360][ T601] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 45.019669][ T601] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 45.019992][ T601] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 45.020307][ T601] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 45.020623][ T601] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 45.020955][ T601] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 45.021268][ T601] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 45.021585][ T601] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 45.021992][ T601] ___sys_sendmsg (net/socket.c:2670) 
[ 45.022303][ T601] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 45.022614][ T601] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 45.022940][ T601] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 45.023249][ T601] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 45.023558][ T601] ? __handle_mm_fault (mm/memory.c:6212) 
[ 45.023872][ T601] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 45.024188][ T601] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 45.024516][ T601] __sys_sendmsg (net/socket.c:2700) 
[ 45.024832][ T601] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 45.025139][ T601] ? 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) 
[ 45.025454][ T601] ? 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) 
[ 45.025761][ T601] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 45.026087][ T601] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 45.026401][ T601] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   45.026790][  T601] RIP: 0033:0x7fdafda931e7
[ 45.027111][ T601] 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)
[   45.028218][  T601] RSP: 002b:00007fff44acbd68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   45.028680][  T601] RAX: ffffffffffffffda RBX: 00007fff44acc490 RCX: 00007fdafda931e7
[   45.029149][  T601] RDX: 0000000000000000 RSI: 00007fff44acbdd0 RDI: 0000000000000005
[   45.029610][  T601] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   45.030091][  T601] R10: 00007fdafd98b6f8 R11: 0000000000000246 R12: 00007fff44acc4c0
[   45.030550][  T601] R13: 00000000686e5677 R14: 0000000000499600 R15: 00007fff44acbec4
| [   46.576445][  T618] ------------[ cut here ]------------
| [ 46.576873][ T618] WARNING: CPU: 3 PID: 618 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) 
| [   46.577490][  T618] Modules linked in: ip_gre gre
| [   46.578443][  T618] Tainted: [W]=WARN
[   46.578674][  T618] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 46.579072][ T618] 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) 
[ 46.579393][ T618] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   46.580497][  T618] RSP: 0018:ffffc900016c7000 EFLAGS: 00010246
[   46.580895][  T618] RAX: 0000000000000000 RBX: ffff888004e59000 RCX: 0000000000000001
[   46.581358][  T618] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   46.581826][  T618] RBP: ffffc900016c70e8 R08: ffff888004e59218 R09: 0000000000000000
[   46.582290][  T618] R10: ffffc900016c7118 R11: ffffffffb638d1e0 R12: 1ffff920002d8e04
[   46.582758][  T618] R13: 000000000000ffd9 R14: ffffc900016c7118 R15: ffff888004e59218
[   46.583236][  T618] FS:  00007ff912284800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   46.583791][  T618] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   46.584180][  T618] CR2: 00007ff9124dfb78 CR3: 0000000010d80002 CR4: 0000000000772ef0
[   46.584640][  T618] PKRU: 55555554
[   46.584879][  T618] Call Trace:
[   46.585111][  T618]  <TASK>
[ 46.585267][ T618] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 46.585653][ T618] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 46.585976][ T618] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 46.586286][ T618] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 46.586602][ T618] netif_set_mtu (net/core/dev.c:9652) 
[ 46.586917][ T618] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 46.587235][ T618] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 46.587539][ T618] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 46.587771][ T618] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 46.588089][ T618] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 46.588409][ T618] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 46.588718][ T618] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 46.589105][ T618] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 46.589424][ T618] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 46.589736][ T618] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 46.590056][ T618] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 46.590367][ T618] ? __dev_get_by_name (net/core/dev.c:865) 
[ 46.590679][ T618] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 46.590993][ T618] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 46.591305][ T618] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 46.591614][ T618] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 46.591934][ T618] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 46.592252][ T618] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 46.592566][ T618] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 46.592907][ T618] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 46.593211][ T618] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 46.593517][ T618] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 46.593829][ T618] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 46.594140][ T618] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 46.594452][ T618] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.594763][ T618] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 46.595080][ T618] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 46.595391][ T618] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 46.595710][ T618] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 46.596041][ T618] ? 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) 
[ 46.596350][ T618] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 46.596658][ T618] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 46.596969][ T618] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 46.597282][ T618] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 46.597595][ T618] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 46.597909][ T618] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 46.598226][ T618] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 46.598535][ T618] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 46.598847][ T618] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 46.599245][ T618] ___sys_sendmsg (net/socket.c:2670) 
[ 46.599553][ T618] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 46.599872][ T618] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 46.600183][ T618] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 46.600487][ T618] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 46.600809][ T618] ? __handle_mm_fault (mm/memory.c:6212) 
[ 46.601118][ T618] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 46.601420][ T618] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 46.601752][ T618] __sys_sendmsg (net/socket.c:2700) 
[ 46.602067][ T618] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 46.602372][ T618] ? 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) 
[ 46.602692][ T618] ? 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) 
[ 46.603008][ T618] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 46.603317][ T618] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 46.603623][ T618] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   46.604013][  T618] RIP: 0033:0x7ff9124511e7
[ 46.604328][ T618] 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)
[   46.605424][  T618] RSP: 002b:00007ffdd5fa3478 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   46.605898][  T618] RAX: ffffffffffffffda RBX: 00007ffdd5fa3ba0 RCX: 00007ff9124511e7
[   46.606362][  T618] RDX: 0000000000000000 RSI: 00007ffdd5fa34e0 RDI: 0000000000000005
[   46.606831][  T618] RBP: 0000000000000004 R08: 00000000000000b8 R09: 0000000000000000
[   46.607288][  T618] R10: 00007ff9123496f8 R11: 0000000000000246 R12: 00007ffdd5fa3bd0
[   46.607746][  T618] R13: 00000000686e5679 R14: 0000000000499600 R15: 00007ffdd5fa35d4
| [   48.014849][  T634] ------------[ cut here ]------------
| [ 48.015269][ T634] WARNING: CPU: 3 PID: 634 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) 
| [   48.016455][  T634] Modules linked in: ip_gre gre
| [   48.017404][  T634] Tainted: [W]=WARN
[   48.017640][  T634] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.018034][ T634] 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) 
[ 48.018354][ T634] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   48.019461][  T634] RSP: 0018:ffffc90001777000 EFLAGS: 00010246
[   48.019864][  T634] RAX: 0000000000000000 RBX: ffff88800cac1000 RCX: 0000000000000001
[   48.020327][  T634] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   48.020796][  T634] RBP: ffffc900017770e8 R08: ffff88800cac1218 R09: 0000000000000000
[   48.021263][  T634] R10: ffffc90001777118 R11: ffffffffb638d1e0 R12: 1ffff920002eee04
[   48.021723][  T634] R13: 000000000000ffd9 R14: ffffc90001777118 R15: ffff88800cac1218
[   48.022190][  T634] FS:  00007f032a51c800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   48.022738][  T634] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.023133][  T634] CR2: 0000000000436890 CR3: 000000000cffe005 CR4: 0000000000772ef0
[   48.023612][  T634] PKRU: 55555554
[   48.023853][  T634] Call Trace:
[   48.024082][  T634]  <TASK>
[ 48.024240][ T634] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 48.024625][ T634] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 48.024945][ T634] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 48.025257][ T634] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 48.025578][ T634] netif_set_mtu (net/core/dev.c:9652) 
[ 48.025894][ T634] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 48.026214][ T634] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 48.026521][ T634] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 48.026753][ T634] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 48.027069][ T634] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 48.027383][ T634] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 48.027701][ T634] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 48.028089][ T634] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 48.028405][ T634] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 48.028720][ T634] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 48.029037][ T634] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 48.029344][ T634] ? __dev_get_by_name (net/core/dev.c:865) 
[ 48.029649][ T634] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 48.029982][ T634] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 48.030296][ T634] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 48.030601][ T634] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 48.030928][ T634] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 48.031246][ T634] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 48.031558][ T634] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 48.031888][ T634] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 48.032195][ T634] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 48.032508][ T634] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 48.032832][ T634] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 48.033141][ T634] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 48.033449][ T634] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.033759][ T634] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 48.034074][ T634] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 48.034386][ T634] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 48.034705][ T634] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 48.035019][ T634] ? 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) 
[ 48.035328][ T634] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 48.035640][ T634] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 48.035951][ T634] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 48.036263][ T634] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 48.036572][ T634] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 48.036888][ T634] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 48.037203][ T634] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 48.037511][ T634] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 48.037829][ T634] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 48.038232][ T634] ___sys_sendmsg (net/socket.c:2670) 
[ 48.038546][ T634] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 48.038861][ T634] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 48.039171][ T634] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 48.039479][ T634] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 48.039801][ T634] ? __handle_mm_fault (mm/memory.c:6212) 
[ 48.040115][ T634] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 48.040426][ T634] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 48.040755][ T634] __sys_sendmsg (net/socket.c:2700) 
[ 48.041071][ T634] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 48.041377][ T634] ? 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) 
[ 48.041698][ T634] ? 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) 
[ 48.042016][ T634] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 48.042332][ T634] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 48.042649][ T634] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.043038][  T634] RIP: 0033:0x7f032a6e91e7
[ 48.043354][ T634] 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)
[   48.044453][  T634] RSP: 002b:00007ffccac55c48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   48.044925][  T634] RAX: ffffffffffffffda RBX: 00007ffccac56370 RCX: 00007f032a6e91e7
[   48.045390][  T634] RDX: 0000000000000000 RSI: 00007ffccac55cb0 RDI: 0000000000000005
[   48.045861][  T634] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   48.046323][  T634] R10: 00007f032a5e16f8 R11: 0000000000000246 R12: 00007ffccac563a0
[   48.046794][  T634] R13: 00000000686e567a R14: 0000000000499600 R15: 00007ffccac55da4
| [   49.461859][  T650] ------------[ cut here ]------------
| [ 49.462202][ T650] WARNING: CPU: 3 PID: 650 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) 
| [   49.462828][  T650] Modules linked in: ip_gre gre
| [   49.463766][  T650] Tainted: [W]=WARN
[   49.464019][  T650] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 49.464404][ T650] 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) 
[ 49.464728][ T650] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   49.465825][  T650] RSP: 0018:ffffc90001817000 EFLAGS: 00010246
[   49.466213][  T650] RAX: 0000000000000000 RBX: ffff888007c99000 RCX: 0000000000000001
[   49.466671][  T650] RDX: 0000000000000000 RSI: ffffffffb5910759 RDI: ffffffffb5058280
[   49.467138][  T650] RBP: ffffc900018170e8 R08: ffff888007c99218 R09: 0000000000000000
[   49.467596][  T650] R10: ffffc90001817118 R11: 66fbf8a82002f8bf R12: 1ffff92000302e04
[   49.468062][  T650] R13: 00000000000005b6 R14: ffffc90001817118 R15: ffff888007c99218
[   49.468522][  T650] FS:  00007f82fbbc4800(0000) GS:ffff8880b5119000(0000) knlGS:0000000000000000
[   49.469071][  T650] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.469456][  T650] CR2: 00007f82fbe1fb78 CR3: 000000000a146001 CR4: 0000000000772ef0
[   49.469936][  T650] PKRU: 55555554
[   49.470171][  T650] Call Trace:
[   49.470400][  T650]  <TASK>
[ 49.470556][ T650] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 49.471017][ T650] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 49.471329][ T650] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 49.471636][ T650] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 49.472056][ T650] netif_set_mtu (net/core/dev.c:9652) 
[ 49.472363][ T650] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 49.472692][ T650] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 49.473006][ T650] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 49.473241][ T650] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 49.473553][ T650] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 49.473883][ T650] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 49.474202][ T650] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 49.474580][ T650] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 49.474902][ T650] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 49.475210][ T650] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 49.475519][ T650] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 49.475835][ T650] ? __dev_get_by_name (net/core/dev.c:865) 
[ 49.476141][ T650] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 49.476443][ T650] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 49.476753][ T650] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 49.477066][ T650] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 49.477380][ T650] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 49.477696][ T650] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 49.478032][ T650] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 49.478353][ T650] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 49.478657][ T650] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 49.478991][ T650] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 49.479300][ T650] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 49.479607][ T650] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 49.479929][ T650] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 49.480244][ T650] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 49.480558][ T650] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 49.480875][ T650] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 49.481195][ T650] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 49.481500][ T650] ? 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) 
[ 49.481825][ T650] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 49.482139][ T650] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 49.482443][ T650] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 49.482767][ T650] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 49.483086][ T650] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 49.483393][ T650] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 49.483708][ T650] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 49.484026][ T650] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 49.484332][ T650] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 49.484724][ T650] ___sys_sendmsg (net/socket.c:2670) 
[ 49.485045][ T650] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 49.485358][ T650] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 49.485665][ T650] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 49.485985][ T650] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 49.486300][ T650] ? __handle_mm_fault (mm/memory.c:6212) 
[ 49.486603][ T650] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 49.486921][ T650] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 49.487248][ T650] __sys_sendmsg (net/socket.c:2700) 
[ 49.487554][ T650] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 49.487868][ T650] ? 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) 
[ 49.488184][ T650] ? 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) 
[ 49.488489][ T650] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 49.488811][ T650] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 49.489122][ T650] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   49.489510][  T650] RIP: 0033:0x7f82fbd911e7
[ 49.489842][ T650] 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)
[   49.490952][  T650] RSP: 002b:00007fff47bba098 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   49.491418][  T650] RAX: ffffffffffffffda RBX: 00007fff47bba7c0 RCX: 00007f82fbd911e7
[   49.491883][  T650] RDX: 0000000000000000 RSI: 00007fff47bba100 RDI: 0000000000000005
[   49.492343][  T650] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   49.492827][  T650] R10: 00007f82fbc896f8 R11: 0000000000000246 R12: 00007fff47bba7f0


Finger prints:
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:ip_tunnel_newlink:ipgre_newlink