======================================
| [   20.056419][  T313] ip_gre: GRE over IPv4 tunneling driver
| [   20.125951][  T312] ------------[ cut here ]------------
| [ 20.126704][ T312] WARNING: CPU: 0 PID: 312 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.127852][  T312] Modules linked in: ip_gre gre sch_ingress vrf veth
[   20.129988][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.130954][ T312] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.131546][ T312] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.133521][  T312] RSP: 0018:ffffc90000637000 EFLAGS: 00010246
[   20.134234][  T312] RAX: 0000000000000000 RBX: ffff88800bca4000 RCX: 0000000000000001
[   20.135092][  T312] RDX: 0000000000000000 RSI: ffffffff8829b939 RDI: ffffffff87a555e0
[   20.135965][  T312] RBP: ffffc900006370e8 R08: ffff88800bca4218 R09: 0000000000000000
[   20.137051][  T312] R10: ffffc90000637118 R11: ffffffff88779160 R12: 1ffff920000c6e04
[   20.137880][  T312] R13: 00000000000005b6 R14: ffffc90000637118 R15: ffff88800bca4218
[   20.138721][  T312] FS:  00007f88cdf7f800(0000) GS:ffff8880abeb7000(0000) knlGS:0000000000000000
[   20.141894][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.142630][  T312] CR2: 00007fb8cac53000 CR3: 000000000a933004 CR4: 0000000000772ef0
[   20.143507][  T312] PKRU: 55555554
[   20.143951][  T312] Call Trace:
[   20.144373][  T312]  <TASK>
[ 20.144664][ T312] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 20.145127][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.145480][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.145816][ T312] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 20.146144][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.146492][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 20.146827][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.147166][ T312] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 20.147498][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.147739][ T312] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 20.148075][ T312] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 20.148593][ T312] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 20.149044][ T312] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 20.149462][ T312] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 20.149804][ T312] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 20.150129][ T312] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 20.150467][ T312] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 20.150795][ T312] ? __dev_get_by_name (net/core/dev.c:865) 
[ 20.151119][ T312] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.151459][ T312] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 20.151803][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.152123][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.152469][ T312] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 20.152810][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.153137][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.153550][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.153885][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.154699][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.155054][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.155512][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.156087][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.156647][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.157222][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.157802][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.158379][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.158940][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.159503][ T312] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.160014][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.160361][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.160687][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.161023][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.161363][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.161700][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.162037][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.162508][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.163279][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 20.163605][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.163938][ T312] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 20.164279][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 20.164596][ T312] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 20.164945][ T312] ? __handle_mm_fault (mm/memory.c:6212) 
[ 20.165501][ T312] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 20.165829][ T312] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 20.166188][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 20.166515][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.166849][ T312] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 20.167205][ T312] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 20.167789][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.168240][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.168563][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.168972][  T312] RIP: 0033:0x7f88ce14c1e7
[ 20.169331][ T312] Code: Unable to access opcode bytes at 0x7f88ce14c1bd.

Code starting with the faulting instruction
===========================================
[   20.169743][  T312] RSP: 002b:00007ffecd239dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.170487][  T312] RAX: ffffffffffffffda RBX: 00007ffecd23a500 RCX: 00007f88ce14c1e7
[   20.170990][  T312] RDX: 0000000000000000 RSI: 00007ffecd239e40 RDI: 0000000000000005
[   20.171493][  T312] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   20.172255][  T312] R10: 00007f88ce0446f8 R11: 0000000000000246 R12: 00007ffecd23a520
[   20.173108][  T312] R13: 00000000686e6636 R14: 0000000000499600 R15: 00007ffecd239f2c
| [   22.986632][  T339] ------------[ cut here ]------------
| [ 22.986997][ T339] WARNING: CPU: 0 PID: 339 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   22.987654][  T339] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   22.989270][  T339] Tainted: [W]=WARN
[   22.989511][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.989957][ T339] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 22.990294][ T339] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   22.991474][  T339] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   22.991894][  T339] RAX: 0000000000000000 RBX: ffff888010112000 RCX: 0000000000000001
[   22.992379][  T339] RDX: 0000000000000000 RSI: ffffffff8829b939 RDI: ffffffff87a555e0
[   22.992868][  T339] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   22.993335][  T339] R10: ffffc900005a7010 R11: ffffffff890a8918 R12: 1ffff920000b4de2
[   22.993798][  T339] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff888010112f08
[   22.994264][  T339] FS:  00007f7356c68800(0000) GS:ffff8880abeb7000(0000) knlGS:0000000000000000
[   22.994803][  T339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.995222][  T339] CR2: 00000000004e5aa8 CR3: 000000000a909001 CR4: 0000000000772ef0
[   22.995727][  T339] PKRU: 55555554
[   22.995983][  T339] Call Trace:
[   22.996224][  T339]  <TASK>
[ 22.996390][ T339] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.996716][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.997066][ T339] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 22.997390][ T339] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 22.997801][ T339] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 22.998127][ T339] netif_set_mtu (net/core/dev.c:9652) 
[ 22.998448][ T339] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.998791][ T339] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 22.999245][ T339] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.999489][ T339] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 22.999945][ T339] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.000315][ T339] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.000647][ T339] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.000985][ T339] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.001395][ T339] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.001714][ T339] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.002045][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.002373][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.002699][ T339] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.003046][ T339] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.003445][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.003778][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.004097][ T339] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.004418][ T339] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.004737][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.005086][ T339] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.005405][ T339] ? __create_object (mm/kmemleak.c:771) 
[ 23.005732][ T339] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.006061][ T339] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.006384][ T339] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.006792][ T339] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.007117][ T339] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.007446][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.007771][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.008096][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.008416][ T339] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.008735][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.009068][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.009385][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.009704][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.010036][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.010364][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.010680][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.011018][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.011356][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.011672][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.012000][ T339] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.012325][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.012643][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.012974][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.013299][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.013623][ T339] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.013955][ T339] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.014277][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.014592][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.015018][ T339] ___sys_sendmsg (net/socket.c:2670) 
[ 23.015337][ T339] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.015655][ T339] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.016068][ T339] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.016392][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.016713][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.017049][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.017371][ T339] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.017692][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.018028][ T339] __sys_sendmsg (net/socket.c:2700) 
[ 23.018347][ T339] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.018747][ T339] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.019089][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.019413][ T339] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.019730][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.020138][  T339] RIP: 0033:0x7f7356e351e7
[ 23.020469][ T339] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.021659][  T339] RSP: 002b:00007ffeb02a73d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.022161][  T339] RAX: ffffffffffffffda RBX: 00007ffeb02a7b00 RCX: 00007f7356e351e7
[   23.022645][  T339] RDX: 0000000000000000 RSI: 00007ffeb02a7440 RDI: 0000000000000005
[   23.023167][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.023650][  T339] R10: 0000000029f00910 R11: 0000000000000246 R12: 0000000000000004
[   23.024163][  T339] R13: 00000000686e6639 R14: 0000000000499600 R15: 0000000000000000
| [   23.275868][  T341] ------------[ cut here ]------------
| [ 23.276177][ T341] WARNING: CPU: 1 PID: 341 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.278644][  T341] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.280192][  T341] Tainted: [W]=WARN
[   23.280521][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.280950][ T341] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.281292][ T341] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.282500][  T341] RSP: 0018:ffffc900005f6ef0 EFLAGS: 00010246
[   23.282984][  T341] RAX: 0000000000000000 RBX: ffff888010112000 RCX: 0000000000000001
[   23.283441][  T341] RDX: 0000000000000000 RSI: ffffffff8829b939 RDI: ffffffff87a555e0
[   23.283926][  T341] RBP: ffffc900005f6fe0 R08: 0000000000000000 R09: 0000000000000000
[   23.284506][  T341] R10: ffffc900005f7010 R11: ffffffff890a8918 R12: 1ffff920000bede2
[   23.284993][  T341] R13: 00000000000005dc R14: ffffc900005f7010 R15: ffff888010112f08
[   23.285448][  T341] FS:  00007f81e3094800(0000) GS:ffff8880abf37000(0000) knlGS:0000000000000000
[   23.286083][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.286518][  T341] CR2: 00000000004e5ab0 CR3: 00000000057b3006 CR4: 0000000000772ef0
[   23.287004][  T341] PKRU: 55555554
[   23.287237][  T341] Call Trace:
[   23.287468][  T341]  <TASK>
[ 23.287627][ T341] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.287945][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.288258][ T341] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 23.288561][ T341] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.288948][ T341] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.289257][ T341] netif_set_mtu (net/core/dev.c:9652) 
[ 23.289562][ T341] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.289882][ T341] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 23.290379][ T341] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.290637][ T341] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 23.291080][ T341] br_add_if (net/bridge/br_if.c:697) bridge 
[ 23.291564][ T341] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 23.291907][ T341] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 23.292225][ T341] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 23.292679][ T341] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.293018][ T341] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 23.293357][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 23.293714][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.294037][ T341] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 23.294429][ T341] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 23.294828][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.295247][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.295560][ T341] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 23.295877][ T341] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 23.296184][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.296504][ T341] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.296838][ T341] ? __create_object (mm/kmemleak.c:771) 
[ 23.297163][ T341] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 23.297498][ T341] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 23.297825][ T341] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.298229][ T341] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 23.298558][ T341] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.298892][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.299214][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.299540][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.299869][ T341] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.300189][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.300515][ T341] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.300843][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.301167][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.301492][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.301832][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.302151][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.302475][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.302807][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.303118][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.303425][ T341] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.303732][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.304051][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.304366][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.304674][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.304999][ T341] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.305317][ T341] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.305624][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.305936][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.306336][ T341] ___sys_sendmsg (net/socket.c:2670) 
[ 23.306636][ T341] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 23.306946][ T341] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 23.307327][ T341] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.307638][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.307957][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.308269][ T341] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.308572][ T341] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 23.308887][ T341] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.309203][ T341] __sys_sendmsg (net/socket.c:2700) 
[ 23.309504][ T341] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 23.309896][ T341] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.310219][ T341] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.310523][ T341] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.310839][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.311227][  T341] RIP: 0033:0x7f81e32611e7
[ 23.311544][ T341] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.312646][  T341] RSP: 002b:00007ffca2d7a018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.313115][  T341] RAX: ffffffffffffffda RBX: 00007ffca2d7a740 RCX: 00007f81e32611e7
[   23.313575][  T341] RDX: 0000000000000000 RSI: 00007ffca2d7a080 RDI: 0000000000000005
[   23.314042][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   23.314518][  T341] R10: 00000000402d2910 R11: 0000000000000246 R12: 0000000000000004
[   23.315026][  T341] R13: 00000000686e6639 R14: 0000000000499600 R15: 0000000000000000
| [   23.735490][  T344] ------------[ cut here ]------------
| [ 23.735911][ T344] WARNING: CPU: 1 PID: 344 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   23.736519][  T344] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   23.738774][  T344] Tainted: [W]=WARN
[   23.739014][  T344] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.739397][ T344] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 23.739712][ T344] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   23.740814][  T344] RSP: 0018:ffffc90000727000 EFLAGS: 00010246
[   23.741203][  T344] RAX: 0000000000000000 RBX: ffff888009c34000 RCX: 0000000000000001
[   23.741660][  T344] RDX: 0000000000000000 RSI: ffffffff8829b939 RDI: ffffffff87a555e0
[   23.742127][  T344] RBP: ffffc900007270e8 R08: ffff888009c34218 R09: 0000000000000000
[   23.742588][  T344] R10: ffffc90000727118 R11: ffffffff88779160 R12: 1ffff920000e4e04
[   23.743060][  T344] R13: 00000000000005b6 R14: ffffc90000727118 R15: ffff888009c34218
[   23.743561][  T344] FS:  00007f4158ee2800(0000) GS:ffff8880abf37000(0000) knlGS:0000000000000000
[   23.744111][  T344] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.744500][  T344] CR2: 0000000000436890 CR3: 000000000f090002 CR4: 0000000000772ef0
[   23.744986][  T344] PKRU: 55555554
[   23.745218][  T344] Call Trace:
[   23.745446][  T344]  <TASK>
[ 23.745603][ T344] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 23.745997][ T344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 23.746310][ T344] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 23.746621][ T344] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 23.746954][ T344] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 23.747281][ T344] netif_set_mtu (net/core/dev.c:9652) 
[ 23.747587][ T344] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 23.747917][ T344] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 23.748226][ T344] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 23.748456][ T344] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 23.748772][ T344] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 23.749083][ T344] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 23.749398][ T344] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 23.749786][ T344] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 23.750098][ T344] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 23.750406][ T344] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 23.750713][ T344] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 23.751022][ T344] ? __dev_get_by_name (net/core/dev.c:865) 
[ 23.751327][ T344] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.751635][ T344] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 23.751957][ T344] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 23.752257][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.752569][ T344] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 23.752894][ T344] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 23.753207][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.753522][ T344] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 23.753834][ T344] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 23.754156][ T344] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 23.754459][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 23.754774][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.755090][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.755397][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 23.755701][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 23.756021][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 23.756347][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 23.756649][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 23.756965][ T344] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 23.757272][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 23.757573][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 23.757890][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 23.758207][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 23.758518][ T344] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 23.758839][ T344] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 23.759148][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 23.759450][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 23.759849][ T344] ___sys_sendmsg (net/socket.c:2670) 
[ 23.760155][ T344] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 23.760489][ T344] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 23.760817][ T344] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 23.761120][ T344] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 23.761430][ T344] ? __handle_mm_fault (mm/memory.c:6212) 
[ 23.761732][ T344] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 23.762052][ T344] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 23.762403][ T344] __sys_sendmsg (net/socket.c:2700) 
[ 23.762712][ T344] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 23.763032][ T344] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 23.763347][ T344] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 23.763653][ T344] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 23.763975][ T344] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 23.764280][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.764661][  T344] RIP: 0033:0x7f41590af1e7
[ 23.764994][ T344] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   23.766091][  T344] RSP: 002b:00007fff87cbe9a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.766556][  T344] RAX: ffffffffffffffda RBX: 00007fff87cbf0d0 RCX: 00007f41590af1e7
[   23.767017][  T344] RDX: 0000000000000000 RSI: 00007fff87cbea10 RDI: 0000000000000005
[   23.767479][  T344] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   23.767944][  T344] R10: 00007f4158fa76f8 R11: 0000000000000246 R12: 00007fff87cbf0f0
[   23.768403][  T344] R13: 00000000686e663a R14: 0000000000499600 R15: 00007fff87cbeaf8
| [   24.646879][  T356] ------------[ cut here ]------------
| [ 24.647211][ T356] WARNING: CPU: 2 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) 
| [   24.647845][  T356] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.649249][  T356] Tainted: [W]=WARN
[   24.649503][  T356] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.649928][ 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) 
[ 24.650258][ T356] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   24.651413][  T356] RSP: 0018:ffffc90000576ef0 EFLAGS: 00010246
[   24.651878][  T356] RAX: 0000000000000000 RBX: ffff88800dc72000 RCX: 0000000000000001
[   24.652391][  T356] RDX: 0000000000000000 RSI: ffffffff8829b939 RDI: ffffffff87a555e0
[   24.652899][  T356] RBP: ffffc90000576fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.653395][  T356] R10: ffffc90000577010 R11: ffffffff890a8918 R12: 1ffff920000aede2
[   24.653912][  T356] R13: 00000000000005dc R14: ffffc90000577010 R15: ffff88800dc72f08
[   24.654412][  T356] FS:  00007f5dab396800(0000) GS:ffff8880abfb7000(0000) knlGS:0000000000000000
[   24.655022][  T356] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.655446][  T356] CR2: 00000000004e5ac0 CR3: 0000000002922004 CR4: 0000000000772ef0
[   24.655967][  T356] PKRU: 55555554
[   24.656223][  T356] Call Trace:
[   24.656481][  T356]  <TASK>
[ 24.656663][ T356] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.657008][ T356] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.657358][ T356] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.657709][ T356] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.658166][ T356] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.658516][ T356] netif_set_mtu (net/core/dev.c:9652) 
[ 24.658866][ T356] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.659225][ T356] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.659693][ T356] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.659968][ T356] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.660412][ T356] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.660794][ T356] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.661130][ T356] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.661461][ T356] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.661876][ T356] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.662198][ T356] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.662515][ T356] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.662867][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.663211][ T356] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 24.663547][ T356] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.663979][ T356] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.664320][ T356] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.664636][ T356] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.664985][ T356] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.665308][ T356] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.665629][ T356] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.665952][ T356] ? __create_object (mm/kmemleak.c:771) 
[ 24.666294][ T356] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.666614][ T356] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.666968][ T356] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.667390][ T356] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.667734][ T356] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.668070][ T356] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.668402][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.668727][ T356] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.669057][ T356] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.669373][ T356] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.669699][ T356] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.670026][ T356] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.670348][ T356] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.670690][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.671042][ T356] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.671392][ T356] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.671729][ T356] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.672081][ T356] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.672410][ 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) 
[ 24.672735][ T356] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.673069][ T356] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.673402][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.673752][ T356] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.674112][ T356] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.674461][ T356] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.674822][ T356] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.675175][ T356] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.675497][ T356] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.675920][ T356] ___sys_sendmsg (net/socket.c:2670) 
[ 24.676256][ T356] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.676576][ T356] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 24.676987][ T356] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.677317][ T356] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.677656][ T356] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.678025][ T356] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.678362][ T356] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.678691][ T356] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.679031][ T356] __sys_sendmsg (net/socket.c:2700) 
[ 24.679352][ T356] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.679747][ T356] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.680122][ T356] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.680451][ T356] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.680787][ T356] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.681183][  T356] RIP: 0033:0x7f5dab5631e7
[ 24.681534][ 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)
[   24.682692][  T356] RSP: 002b:00007fff71acc4e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.683204][  T356] RAX: ffffffffffffffda RBX: 00007fff71accc10 RCX: 00007f5dab5631e7
[   24.683686][  T356] RDX: 0000000000000000 RSI: 00007fff71acc550 RDI: 0000000000000005
[   24.684183][  T356] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.684656][  T356] R10: 000000003ac41910 R11: 0000000000000246 R12: 0000000000000004


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