======================================
| [   21.315768][  T312] ip_gre: GRE over IPv4 tunneling driver
| [   21.370824][  T311] ------------[ cut here ]------------
| [ 21.371329][ T311] WARNING: CPU: 1 PID: 311 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) 
| [   21.372003][  T311] Modules linked in: ip_gre gre sch_ingress vrf veth
[   21.373763][  T311] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 21.374169][ T311] 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) 
[ 21.374822][ T311] 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
[   21.376202][  T311] RSP: 0018:ffffc90000657000 EFLAGS: 00010246
[   21.376822][  T311] RAX: 0000000000000000 RBX: ffff88800a524000 RCX: 0000000000000001
[   21.377489][  T311] RDX: 0000000000000000 RSI: ffffffffa269b939 RDI: ffffffffa1e555e0
[   21.377985][  T311] RBP: ffffc900006570e8 R08: ffff88800a524218 R09: 0000000000000000
[   21.378699][  T311] R10: ffffc90000657118 R11: ffffffffa2b79160 R12: 1ffff920000cae04
[   21.379193][  T311] R13: 00000000000005b6 R14: ffffc90000657118 R15: ffff88800a524218
[   21.380112][  T311] FS:  00007f82dc6bb800(0000) GS:ffff888091b37000(0000) knlGS:0000000000000000
[   21.380899][  T311] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   21.381583][  T311] CR2: 00007fae32cb76f0 CR3: 000000000cc69001 CR4: 0000000000772ef0
[   21.382087][  T311] PKRU: 55555554
[   21.382441][  T311] Call Trace:
[   21.382690][  T311]  <TASK>
[ 21.382878][ T311] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 21.383303][ T311] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 21.383628][ T311] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 21.383958][ T311] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 21.384286][ T311] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 21.384633][ T311] netif_set_mtu (net/core/dev.c:9652) 
[ 21.384953][ T311] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 21.385310][ T311] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 21.385630][ T311] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 21.385881][ T311] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 21.386212][ T311] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 21.386548][ T311] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 21.386870][ T311] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 21.387283][ T311] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 21.387622][ T311] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 21.387941][ T311] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 21.388272][ T311] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 21.388598][ T311] ? __dev_get_by_name (net/core/dev.c:865) 
[ 21.388934][ T311] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 21.389266][ T311] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 21.389602][ T311] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 21.389915][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 21.390262][ T311] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 21.390602][ T311] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 21.390928][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.391269][ T311] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 21.391595][ T311] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 21.391917][ T311] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 21.392246][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 21.392576][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.392899][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.393235][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 21.393570][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 21.393888][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 21.394230][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 21.394562][ T311] ? 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) 
[ 21.394883][ T311] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 21.395204][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 21.395547][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 21.395880][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 21.396203][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 21.396542][ T311] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 21.396880][ T311] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 21.397206][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 21.397549][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 21.397959][ T311] ___sys_sendmsg (net/socket.c:2670) 
[ 21.398279][ T311] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 21.398627][ T311] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 21.398955][ T311] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 21.399278][ T311] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 21.399633][ T311] ? __handle_mm_fault (mm/memory.c:6212) 
[ 21.399947][ T311] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 21.400261][ T311] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 21.400624][ T311] __sys_sendmsg (net/socket.c:2700) 
[ 21.400940][ T311] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 21.401261][ T311] ? 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) 
[ 21.401610][ T311] ? 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) 
[ 21.401934][ T311] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 21.402256][ T311] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 21.402599][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   21.402992][  T311] RIP: 0033:0x7f82dc8881e7
[ 21.403339][ T311] Code: Unable to access opcode bytes at 0x7f82dc8881bd.

Code starting with the faulting instruction
===========================================
[   21.403770][  T311] RSP: 002b:00007ffd07a0ad18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   21.404250][  T311] RAX: ffffffffffffffda RBX: 00007ffd07a0b440 RCX: 00007f82dc8881e7
[   21.404757][  T311] RDX: 0000000000000000 RSI: 00007ffd07a0ad80 RDI: 0000000000000005
[   21.405235][  T311] RBP: 0000000000000004 R08: 00000000000000b0 R09: 0000000000000000
[   21.405768][  T311] R10: 00007f82dc7806f8 R11: 0000000000000246 R12: 00007ffd07a0b460
[   21.406246][  T311] R13: 00000000686e6448 R14: 0000000000499600 R15: 00007ffd07a0ae6c
| [   24.255193][  T339] ------------[ cut here ]------------
| [ 24.255572][ T339] WARNING: CPU: 2 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) 
| [   24.256226][  T339] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.258195][  T339] Tainted: [W]=WARN
[   24.258667][  T339] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.259225][ 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) 
[ 24.259722][ 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
[   24.261022][  T339] RSP: 0018:ffffc900004c6ef0 EFLAGS: 00010246
[   24.261570][  T339] RAX: 0000000000000000 RBX: ffff8880051c2000 RCX: 0000000000000001
[   24.262063][  T339] RDX: 0000000000000000 RSI: ffffffffa269b939 RDI: ffffffffa1e555e0
[   24.262560][  T339] RBP: ffffc900004c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.263044][  T339] R10: ffffc900004c7010 R11: ffffffffa34a8918 R12: 1ffff92000098de2
[   24.263555][  T339] R13: 00000000000005dc R14: ffffc900004c7010 R15: ffff8880051c2f08
[   24.264045][  T339] FS:  00007fc9edebe800(0000) GS:ffff888091bb7000(0000) knlGS:0000000000000000
[   24.264620][  T339] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.265035][  T339] CR2: 00000000004e5aa8 CR3: 00000000027be003 CR4: 0000000000772ef0
[   24.265541][  T339] PKRU: 55555554
[   24.265805][  T339] Call Trace:
[   24.266058][  T339]  <TASK>
[ 24.266238][ T339] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.266580][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.266920][ T339] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.267250][ T339] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.267671][ T339] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.268003][ T339] netif_set_mtu (net/core/dev.c:9652) 
[ 24.268352][ T339] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.268695][ T339] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.269146][ T339] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.269409][ T339] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.269851][ T339] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.270221][ T339] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.270575][ T339] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.270909][ T339] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.271340][ T339] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.271676][ T339] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.272004][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.272347][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.272681][ 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) 
[ 24.273015][ T339] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.273431][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.273763][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.274092][ T339] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.274430][ T339] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.274761][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.275087][ T339] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.275426][ T339] ? __create_object (mm/kmemleak.c:771) 
[ 24.275776][ T339] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.276105][ T339] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.276446][ T339] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.276850][ T339] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.277188][ T339] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.277531][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.277858][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.278201][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.278542][ T339] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.278867][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.279203][ T339] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.279541][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.279872][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.280204][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.280549][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.280884][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.281231][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.281601][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.281937][ 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) 
[ 24.282267][ T339] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.282608][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.282935][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.283277][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.283639][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.283971][ T339] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.284318][ T339] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.284652][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.284977][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.285406][ T339] ___sys_sendmsg (net/socket.c:2670) 
[ 24.285742][ T339] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.286085][ 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) 
[ 24.286500][ T339] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.286850][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.287198][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.287555][ T339] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.287886][ 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) 
[ 24.288228][ T339] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.288576][ T339] __sys_sendmsg (net/socket.c:2700) 
[ 24.288904][ T339] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.289319][ T339] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.289665][ T339] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.289996][ T339] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.290334][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.290745][  T339] RIP: 0033:0x7fc9ee08b1e7
[ 24.291083][ 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)
[   24.292247][  T339] RSP: 002b:00007ffe81d3b688 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.292749][  T339] RAX: ffffffffffffffda RBX: 00007ffe81d3bdb0 RCX: 00007fc9ee08b1e7
[   24.293243][  T339] RDX: 0000000000000000 RSI: 00007ffe81d3b6f0 RDI: 0000000000000005
[   24.293741][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.294231][  T339] R10: 0000000006632910 R11: 0000000000000246 R12: 0000000000000004
[   24.294722][  T339] R13: 00000000686e644b R14: 0000000000499600 R15: 0000000000000000
| [   24.565354][  T342] ------------[ cut here ]------------
| [ 24.565681][ T342] WARNING: CPU: 1 PID: 342 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) 
| [   24.566403][  T342] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   24.568135][  T342] Tainted: [W]=WARN
[   24.568400][  T342] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.568850][ T342] 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) 
[ 24.569220][ T342] 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
[   24.571880][  T342] RSP: 0018:ffffc900004c6ef0 EFLAGS: 00010246
[   24.572354][  T342] RAX: 0000000000000000 RBX: ffff8880051c2000 RCX: 0000000000000001
[   24.572863][  T342] RDX: 0000000000000000 RSI: ffffffffa269b939 RDI: ffffffffa1e555e0
[   24.573378][  T342] RBP: ffffc900004c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.573889][  T342] R10: ffffc900004c7010 R11: ffffffffa34a8918 R12: 1ffff92000098de2
[   24.574408][  T342] R13: 00000000000005dc R14: ffffc900004c7010 R15: ffff8880051c2f08
[   24.574918][  T342] FS:  00007f1a93c39800(0000) GS:ffff888091b37000(0000) knlGS:0000000000000000
[   24.575524][  T342] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.575957][  T342] CR2: 00000000004e5ab0 CR3: 000000000b4d2002 CR4: 0000000000772ef0
[   24.576510][  T342] PKRU: 55555554
[   24.576761][  T342] Call Trace:
[   24.577011][  T342]  <TASK>
[ 24.577193][ T342] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.577548][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.577889][ T342] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.578222][ T342] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.578650][ T342] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.578983][ T342] netif_set_mtu (net/core/dev.c:9652) 
[ 24.579332][ T342] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.579681][ T342] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.580158][ T342] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.580435][ T342] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.580885][ T342] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.581276][ T342] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.581645][ T342] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.582005][ T342] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.582462][ T342] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.582812][ T342] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.583147][ T342] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.583497][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.583845][ T342] ? __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) 
[ 24.584196][ T342] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.584621][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.584978][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.585331][ T342] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.585674][ T342] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.586020][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.586381][ T342] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.586719][ T342] ? __create_object (mm/kmemleak.c:771) 
[ 24.587067][ T342] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.587415][ T342] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.587756][ T342] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.588171][ T342] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.588521][ T342] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.588862][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.589204][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.589572][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.589932][ T342] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.590268][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.590627][ T342] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.590960][ T342] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.591321][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.591662][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.591999][ T342] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.592347][ T342] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.592682][ T342] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.593033][ T342] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.593374][ T342] ? 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) 
[ 24.593710][ T342] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.594049][ T342] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.594389][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.594730][ T342] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.595067][ T342] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.595419][ T342] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.595778][ T342] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.596141][ T342] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.596489][ T342] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.596917][ T342] ___sys_sendmsg (net/socket.c:2670) 
[ 24.597249][ T342] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.597592][ T342] ? __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) 
[ 24.598021][ T342] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.598370][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.598710][ T342] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.599052][ T342] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.599398][ T342] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.599827][ T342] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.600176][ T342] __sys_sendmsg (net/socket.c:2700) 
[ 24.600526][ T342] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.600999][ T342] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.601363][ T342] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.601700][ T342] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.602035][ T342] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.602460][  T342] RIP: 0033:0x7f1a93e061e7
[ 24.602807][ T342] 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)
[   24.604012][  T342] RSP: 002b:00007ffedda11358 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.604522][  T342] RAX: ffffffffffffffda RBX: 00007ffedda11a80 RCX: 00007f1a93e061e7
[   24.605022][  T342] RDX: 0000000000000000 RSI: 00007ffedda113c0 RDI: 0000000000000005
[   24.605537][  T342] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   24.606048][  T342] R10: 00000000228fa910 R11: 0000000000000246 R12: 0000000000000004
[   24.606554][  T342] R13: 00000000686e644c R14: 0000000000499600 R15: 0000000000000000
| [   25.045742][  T345] ------------[ cut here ]------------
| [ 25.046108][ T345] WARNING: CPU: 3 PID: 345 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) 
| [   25.046754][  T345] Modules linked in: bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   25.048357][  T345] Tainted: [W]=WARN
[   25.048605][  T345] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.049005][ T345] 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) 
[ 25.049349][ T345] 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
[   25.050529][  T345] RSP: 0018:ffffc90000637000 EFLAGS: 00010246
[   25.050939][  T345] RAX: 0000000000000000 RBX: ffff888009161000 RCX: 0000000000000001
[   25.051425][  T345] RDX: 0000000000000000 RSI: ffffffffa269b939 RDI: ffffffffa1e555e0
[   25.051901][  T345] RBP: ffffc900006370e8 R08: ffff888009161218 R09: 0000000000000000
[   25.052384][  T345] R10: ffffc90000637118 R11: ffffffffa2b79160 R12: 1ffff920000c6e04
[   25.052863][  T345] R13: 00000000000005b6 R14: ffffc90000637118 R15: ffff888009161218
[   25.053355][  T345] FS:  00007f0950880800(0000) GS:ffff888091c37000(0000) knlGS:0000000000000000
[   25.053916][  T345] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.054330][  T345] CR2: 00007f0950980130 CR3: 000000000c134005 CR4: 0000000000772ef0
[   25.054815][  T345] PKRU: 55555554
[   25.055054][  T345] Call Trace:
[   25.055300][  T345]  <TASK>
[ 25.055465][ T345] ? __pfx_ip_route_output_key_hash (net/ipv4/route.c:2684) 
[ 25.055874][ T345] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.056197][ T345] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.056527][ T345] ? crng_make_state (drivers/char/random.c:393 (discriminator 1)) 
[ 25.056846][ T345] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 25.057174][ T345] netif_set_mtu (net/core/dev.c:9652) 
[ 25.057503][ T345] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.057834][ T345] ? dev_addr_mod (net/core/dev_addr_lists.c:584) 
[ 25.058152][ T345] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.058409][ T345] ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1246) 
[ 25.058737][ T345] ? __pfx_ip_tunnel_newlink (net/ipv4/ip_tunnel.c:1209) 
[ 25.059070][ T345] ipgre_newlink (net/ipv4/ip_gre.c:1415 (discriminator 4)) ip_gre 
[ 25.059409][ T345] ? __pfx_ipgre_newlink (net/ipv4/ip_gre.c:1401) ip_gre 
[ 25.059819][ T345] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 25.060152][ T345] ? rtnl_create_link (net/core/rtnetlink.c:3642) 
[ 25.060490][ T345] rtnl_newlink_create (net/core/rtnetlink.c:3828) 
[ 25.060826][ T345] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 25.061151][ T345] ? __dev_get_by_name (net/core/dev.c:865) 
[ 25.061487][ T345] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.061819][ T345] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 25.062156][ T345] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.062495][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.062863][ T345] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 25.063195][ T345] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.063525][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.063860][ T345] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.064176][ T345] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.064506][ T345] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.064828][ T345] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.065147][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.065556][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.065901][ T345] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.066223][ T345] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.066569][ T345] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.066922][ T345] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.067263][ T345] ? 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) 
[ 25.067603][ T345] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.067926][ T345] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.068239][ T345] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.068576][ T345] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.068902][ T345] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.069220][ T345] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.069555][ T345] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.069883][ T345] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.070204][ T345] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.070619][ T345] ___sys_sendmsg (net/socket.c:2670) 
[ 25.070943][ T345] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.071259][ T345] ? __pfx_handle_pte_fault (mm/memory.c:6026) 
[ 25.071585][ T345] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 25.071900][ T345] ? do_user_addr_fault (arch/x86/mm/fault.c:1327) 
[ 25.072224][ T345] ? __handle_mm_fault (mm/memory.c:6212) 
[ 25.072563][ T345] ? __pfx___handle_mm_fault (mm/memory.c:6121) 
[ 25.072887][ T345] ? lock_vma_under_rcu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/mmap_lock.c:171) 
[ 25.073225][ T345] __sys_sendmsg (net/socket.c:2700) 
[ 25.073551][ T345] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.073867][ T345] ? 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) 
[ 25.074193][ T345] ? 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) 
[ 25.074525][ T345] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.074845][ T345] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.075168][ T345] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.075571][  T345] RIP: 0033:0x7f0950a4d1e7
[ 25.075913][ T345] 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)
[   25.077045][  T345] RSP: 002b:00007ffcbf4f6ec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.077540][  T345] RAX: ffffffffffffffda RBX: 00007ffcbf4f75f0 RCX: 00007f0950a4d1e7
[   25.078023][  T345] RDX: 0000000000000000 RSI: 00007ffcbf4f6f30 RDI: 0000000000000005
[   25.078505][  T345] RBP: 0000000000000008 R08: 00000000000000ac R09: 0000000000000000
[   25.078979][  T345] R10: 00007f09509456f8 R11: 0000000000000246 R12: 00007ffcbf4f7610
[   25.079468][  T345] R13: 00000000686e644c R14: 0000000000499600 R15: 00007ffcbf4f7018
| [   26.477012][  T361] ------------[ cut here ]------------
| [ 26.477378][ T361] WARNING: CPU: 3 PID: 361 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   26.478021][  T361] Modules linked in: 8021q bridge stp llc ip6_gre ip6_tunnel tunnel6 act_gact cls_matchall ip_gre gre sch_ingress vrf veth
| [   26.479549][  T361] Tainted: [W]=WARN
[   26.479792][  T361] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 26.480200][ T361] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 26.480544][ T361] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   26.481866][  T361] RSP: 0018:ffffc90000566ef0 EFLAGS: 00010246
[   26.482273][  T361] RAX: 0000000000000000 RBX: ffff888009742000 RCX: 0000000000000001
[   26.482918][  T361] RDX: 0000000000000000 RSI: ffffffffa269b939 RDI: ffffffffa1e555e0
[   26.483423][  T361] RBP: ffffc90000566fe0 R08: 0000000000000000 R09: 0000000000000000
[   26.483900][  T361] R10: ffffc90000567010 R11: ffffffffa34a8918 R12: 1ffff920000acde2
[   26.484418][  T361] R13: 00000000000005dc R14: ffffc90000567010 R15: ffff888009742f08
[   26.484894][  T361] FS:  00007fd24b882800(0000) GS:ffff888091c37000(0000) knlGS:0000000000000000
[   26.485460][  T361] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.485894][  T361] CR2: 00000000004e6898 CR3: 000000000ba49001 CR4: 0000000000772ef0
[   26.486389][  T361] PKRU: 55555554
[   26.486630][  T361] Call Trace:
[   26.486871][  T361]  <TASK>
[ 26.487038][ T361] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 26.487367][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.487701][ T361] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 26.488020][ T361] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 26.488425][ T361] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 26.488757][ T361] netif_set_mtu (net/core/dev.c:9652) 
[ 26.489078][ T361] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 26.489418][ T361] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 26.489858][ T361] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 26.490099][ T361] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 26.490539][ T361] br_add_if (net/bridge/br_if.c:697) bridge 
[ 26.490930][ T361] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 26.491256][ T361] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 26.491591][ T361] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 26.491996][ T361] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 26.492324][ T361] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 26.492641][ T361] ? __kernel_text_address (kernel/extable.c:79) 
[ 26.492972][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.493308][ T361] ? __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) 
[ 26.493636][ T361] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 26.494036][ T361] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.494365][ T361] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.494685][ T361] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 26.495012][ T361] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 26.495342][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.495672][ T361] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 26.496003][ T361] ? __create_object (mm/kmemleak.c:771) 
[ 26.496334][ T361] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 26.496657][ T361] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 26.496975][ T361] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 26.497389][ T361] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 26.497719][ T361] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 26.498047][ T361] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 26.498374][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.498702][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.499023][ T361] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 26.499351][ T361] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.499676][ T361] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 26.500000][ T361] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 26.500327][ T361] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 26.500654][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.500981][ T361] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 26.501307][ T361] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 26.501632][ T361] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 26.501961][ T361] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 26.502283][ T361] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 26.502614][ T361] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 26.502937][ T361] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 26.503255][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.503589][ T361] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 26.503916][ T361] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 26.504235][ T361] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 26.504566][ T361] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 26.504896][ T361] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 26.505215][ T361] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 26.505631][ T361] ___sys_sendmsg (net/socket.c:2670) 
[ 26.505958][ T361] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 26.506278][ T361] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 26.506683][ T361] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 26.507011][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.507344][ T361] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 26.507670][ T361] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 26.507991][ T361] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 26.508315][ T361] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 26.508644][ T361] __sys_sendmsg (net/socket.c:2700) 
[ 26.508958][ T361] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 26.509362][ T361] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 26.509703][ T361] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 26.510024][ T361] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 26.510354][ T361] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   26.510753][  T361] RIP: 0033:0x7fd24ba4f1e7
[ 26.511085][ T361] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   26.512234][  T361] RSP: 002b:00007ffd4fed5638 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   26.512726][  T361] RAX: ffffffffffffffda RBX: 00007ffd4fed5d60 RCX: 00007fd24ba4f1e7
[   26.513208][  T361] RDX: 0000000000000000 RSI: 00007ffd4fed56a0 RDI: 0000000000000005
[   26.513694][  T361] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   26.514179][  T361] R10: 0000000004355910 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